RESOURCE GUIDE THE ULTIMATE GUIDE TO PLASTIC INJECTION MOLDING TERMINOLOGY FIRST EDITION
|
|
- Evan Richard
- 6 years ago
- Views:
Transcription
1 RESOURCE GUIDE THE ULTIMATE GUIDE TO PLASTIC INJECTION MOLDING TERMINOLOGY FIRST EDITION 1
2 The GreenLeaf Industries team is passionate about integrating Engineered Quality, Reliable Delivery and Cost Containment into every design and project. We are a family owned, made in America manufacturer that is committed to supporting our clients and the Plastic Injection Molding Industry. It is our pleasure to introduce our latest resource guide to help designers, engineers and purchasing professionals navigate the world of plastic injection molding. A ADDITIVE MANUFACTURING This is actually the technical term for 3-D printing. It is the process of manufacturing a three-dimensional object by placing layer on top of layer based on a specific CAD model. AGING Refers to the change of a material with time under defined environmental conditions, leading to either improvement, or the deterioration of certain properties. ALLOY A composite material made by blending polymers (or copolymers) with other polymers or elastomers under predetermined conditions. ANGLE PINS Pins that are placed at an angle and fit freely into a slide. Because the pins are at an angle, a cam action is created as the mold opens, and this moves the slide out of the way prior to part ejection. Angle pins may be called horn pins. ANNEALING The process of heating a molded plastic article to a predetermined temperature and slowly cooling it to relieve stresses caused by the manufacturing process. This secondary process is occasionally required for injection molded parts. ANTISTATIC AGENT An agent added to the molding material (or applied on the surface of the molded object) to make it less conductive, whereby hindering the fixation of dust. AUTOMATIC MOLDING Repeatedly going through the entire injection molding cycle, including the ejection process, without human assistance. B BACK TAPER A reverse draft used in a mold to prevent molded articles from drawing freely. BACKING PLATE A plate used in mold construction, as a support for the cavity blocks, guide pins, bushings, etc. BLISTER A raised area on the surface of a molded part that is caused by the pressure of gases inside it on its incompletely hardened surface. BLUSH Is simply a clouded discoloration of plastic in areas that come under high stress. When located at the gate (a high stress location) it is called gate blush. 2
3 BOSS A projection on a plastic part designed to add strength, facilitate alignment during assembly, or provide strength in an area where fasteners are installed. BUBBLE An internal pocket (void) of air or other gas trapped within a space of plastic due to poor part design, poor mold design, or poor processing. BURN When the air temperature inside the mold exceeds the flash point of the plastic, a burn mark is made. If something is burned in molding, it shows evidence of thermal decomposition through some discoloration, distortion and localized destruction of the surface of the plastic. C CARBON BLACK Is a black pigment produced by the incomplete burning of natural gas or oil. It is widely used as filler particularly in the rubber industry. Because it possesses useful ultraviolet protective properties, it is also used for injection molding compounds where the item is intended for outside weathering applications. CASE HARDEN It is a term used when hardening the surface of a piece of steel to a relatively shallow depth. CAST To form a plastic object by pouring a fluid monomer-polymer solution into an open mold where it finishes polymerizing. CAVITY A depression in a mold, which usually forms the outer surface of the molded part. Depending on the number of such depressions, molds can be designated as single cavity or multicavity. CENTER GATED MOLD An injection mold wherein the cavity is filled with molding material through a sprue, or gate, directly into the center of the part. CHALKING This term represents a dry, chalk-like appearance or deposit on the surface of a plastic. It is sometimes known as a haze CHROME PLATING An electrolytic process that deposits a hard film of chromium metal onto working surfaces of other metals in the event that resistance to corrosion, abrasion or erosion is required. CLAMPING PLATE A plate fitted to a mold and then used to fasten the mold to a molding machine. CLAMPING FORCE In injection molding, it is the pressure that is applied to the mold to keep it closed while molten plastic is injected at very high pressures. COLD SLUG This is what we call the first material to enter an injection mold. It gets its name from the fact that when it passes through the sprue orifice, it is cooled below the effective molding temperature. COLD SLUG WELL It is the space directly opposite of the sprue opening, inside an injection mold, 3
4 to trap the cold slug. COMPRESSIVE STRENGTH The crushing load (at failure) divided by the original sectional area of the specimen. CONDUCTIVE PLASTICS Materials that allow a current or charge to travel through it. Conductive plastics are hybrid polymers that are electrically conductive or static dissipative. These plastics are engineered, using additives such as copper, silver, aluminum, carbon black and carbon fibers, to have conductivity characteristics. CONTINUOUS SERVICE TEMPERATURE The maximum temperature above which mechanical and electrical properties are degraded over the lifetime of the item. COOLING CHANNELS Channels or passageways located within the body of a mold through which a cooling medium can be circulated to control the mold temperature and remove heat as the molten plastic cools. COOLING FIXTURE A fixture holding the shape of a molded piece to maintain the proper shape, or dimension, of a molded part after it is removed from the mold. It is used until the part is cool enough to retain its shape without appreciable distortion. CORE A term describing a male element within a die, which produces a hole or recess inside the part. It also refers to a part of a more complex mold, used to mold undercut parts. CORE PIN A pin that is being used to mold a hole. CORING The process of removing excess material from the cross section of a molded part to attain a more uniform wall thickness. CRAZING The small hair-like cracks on or beneath the surface of a plastic part. It sometimes is an indicator of imminent material fracture. CREEP The tendency of a plastic material to move slowly, at the molecular level, over a period of time under the influence of stresses. Over long periods of time these tiny movements add up, changing part dimensions. Manufacturing engineers designing parts for applications having a consistent high pressure will consider creep when choosing their materials. CRYSTALLINITY A state of molecular structure in resins which denotes uniformity and compactness of the molecular chains that form the polymer. Normally the condition can be attributed to the formation of solid crystals with a definite geometric form. CURE To change the physical properties of a material by chemical reaction to make it more stable & functional. The process may include condensation, polymerization, or vulcanization. CURING TEMPERATURE The proper temperature at which a molded product is subjected to curing. CYCLE The complete sequence of operations involved in a process, or part of a process, is a cycle. In molding, the cycle time is the period, or elapsed time, between a certain point in one cycle and the same point in the next. 4
5 D DAYLIGHT OPENING Clearance between two plates of a press in the open position. DECORATION (OF PARTS) After injection molding, a secondary operation where the part is printed (decorated) by screen printing, pad printing, heat transfer, or similar methods. DEFLASHING Covers the range of finishing techniques used to remove the flash (excess, unwanted material) that occurs on plastic parts such as cutting, scraping, filing, sanding, milling or tumbling. DEGRADATION A damaging change in the chemical structure of a plastic resulting from such things as heat, light exposure, and general weathering. DELAMINTATION The splitting of a plastic material along the plane of its layers. It is the condition of physical separation, or loss of bond, between laminate plies. DENSITY Weight per unit volume of a substance, expressed in units such as grams per cubic centimeter or pounds per cubic foot. DESSICANT A substance that can be used for drying plastic pellets because of its affinity for water. DESTATICIZATION Is the act of treating plastic materials to minimize their accumulation of static electricity. DETERIORATION A permanent change in the physical properties of a plastic evidenced by impairment of these properties. DIMENSIONAL STABILITY The ability of a plastic part to retain its precise shape over time. Different plastic materials have different dimensional stability characteristics, and the dimensional stability of some plastics are even affected by moisture. DISCOLORATION Any change that occurs from the original color that likely has resulted from overheating, light exposure or chemical exposure. DISHED Showing a symmetrical distortion of a flat, or curved, section of a plastic object. As normally viewed, it now appears concave, or more concave than intended. DISPERSION Finely divided particles of a material, that is in suspension inside another substance. DOMED A symmetrical distortion of a flat, or curved, section of a plastic object. As normally viewed, it now appears convex, or more convex than intended. DOWEL A pin used to maintain alignment between two or more parts of a mold. DRAFT The degree of taper of a sidewall or the angle of clearance designed to facilitate removal of parts from a mold. DRY COLORING A method occasionally used by fabricators for coloring plastic by tumble blending 5
6 uncolored particles of plastic material with selected dyes and pigments. DUROMETER HARDNESS The hardness of a plastic material, as measured by the Shore Durometer. DWELL A pause in the application of pressure to a mold made just before the mold is completely closed. It allows the escape of gas from the molding material. E EDM (ELECTRIC DISCHARGE MACHINING) A metal working process applicable to mold construction in which controlled sparking is used to erode away the metal, usually to create a complicated shape. EJECTOR CONFIRMATION SWITCH A switch used to prevent mold damage by detecting if the ejector plate does not fully return to home position. EJECTOR PIN Steel pins used to eject parts and runners from the mold. When the ejector system of a mold is actuated by the molding machine, ejector pins will move forward and thereby remove parts. EJECTOR PIN RETAINER PLATE The retainer into which ejector pins are assembled. EJECTOR RETURN PINS Projections that push the ejector assembly back as the mold closes. EJECTOR ROD & BAR The bar that moves the ejector assembly after the mold is opened. ELASTICITY The property of a material by virtue of which it tends to recover to its original size and shape after deformation. ELASTOMER A material which stretches under low stress to at least twice its length, and snaps back to the original length upon release of stress. ELECTRONIC TREATING When plastic parts are made of a material that does not naturally adhere to inks, the part surface is subjected to a high voltage corona discharge. Once treated, the plastic will be rendered printable. ELECTROPLATING The accumulation of metals on certain plastics and molds for finishing. ELONGATION The fractional increase in length of a material stressed under a tensile load. ENCAPSULATING When an article is covered in a closed, envelope of plastic by immersing the object in a casting resin and allowing the resin to polymerize or to cool. ENVIRONMENTAL STRESS CRACKING The susceptibility of a thermoplastic part to crack (or craze) under the influence of certain chemicals, aging, weather or stress. 6
7 F FABRICATE To work a material into a finished form by various manufacturing methods. FABRICATING The use of various manufacturing methods to create plastic products. Examples of fabrication processes include: cutting, tapping, fastening and punching such plastics as sheets, tubes, rods and more. FAMILY MOLD A multi-cavity mold where the various cavities form different parts in a single shot using the same material. FAN GATE A shallow gate somewhat wider than the runner from which it extends. The gate is fanshaped with the widest part of the gate touching the plastic part. FIBER This term usually refers to thin fibers of glass, which are used to reinforce plastic materials. The fiberglass is incorporated into the plastic pellets prior to the injection molding process. FILLER An additive to resins for the purpose of modifying physical properties (for example: impact resistance, hardness or dimensional stability). It can also be used to reduce the expense of resin. FILLET A small radius added to replace a sharp interior corner usually for reducing a stress concentration, and thereby making the part stronger. FINISH To complete the secondary work on a molded part so that it is ready for use. Operations such as filing, de-flashing, buffing, drilling, tapping and de-gating are commonly called finishing operations. FIXTURE The means of holding a part, or parts, during a manufacturing operation. FLAME RATING An internationally accepted plastics flammability testing standard created by Underwriters Laboratories. FLASH Extra plastic attached to a molded part along the parting line or other shut-off locations in the mold. FLASH GATE Usually a long gate extending from a runner, which runs parallel to an edge of a molded part along the flash or parting line of the mold. FLEXURAL STRENGTH The ability of a material to flex without permanent distortion or breaking. FLOW A qualitative description of the fluidity of a plastic material during the process of molding. FLOW MARKS Visible indications on the surface of a part that show how the plastic flowed into the mold. G GATE In injection molding, the orifice through which the melt enters the cavity is called the gate. 7
8 GLOSS The shine or luster that appears on the material surface. GUIDE PINS Devices that maintain proper alignment of the core and cavity while the mold closes. These are also called leader pins. H HARDNESS The resistance of a material to compression and indentation. Among the more important methods of testing this property are Brinell hardness and Rockwell hardness. HAZE The degree of cloudiness in a plastic material. HEAT TRANSFER The transfer of thermal energy across a boundary. Molds and their cooling systems are designed to effectively and efficiently transfer heat, allowing the molten plastic to solidify. HEAT TRANSFER PRINTING A part decoration process using heat to transfer an image from a printed roll of film onto a plastic part. HOT MANIFOLD MOLD A thermoplastic injection mold in which the portion of the mold, which contains the runner system, has its own heating elements. The molding material is kept in a molten state ready for injection into the cavities, from which the manifold is insulated. HOT STAMPING A secondary engraving operation for decorating (or marking) plastics in which the roll leaf is stamped with heated metal dies onto a plastic part. HYGROSCOPY Is the ability of a substance to attract and hold water molecules from the surrounding environment. I IMPACT RESISTANCE The measure of how much a plastic item can withstand high-speed stress. IMPACT STRENGTH The ability of a material to withstand shock loading. Molded plastics are usually given a value on an izod scale. An izod impact test is designed to determine the resistance of a plastic material to a shock loading. IN-MOLD LABELLING (IML) A form of insert molding where a pre-printed label is installed into the mold, the mold is closed, and then plastic is injected into the cavity. The label will be permanently attached to the plastic part. INJECTION MOLDING The process of creating plastic parts and components by melting plastic; forcing (injecting) the molten plastic into a mold; allowing the plastic to solidify in the mold; and finally, removing the solid plastic parts from the mold. INJECTION BLOW MOLDING A blow molding process in which the item to be blown is first formed by the injection molding process. INSERT An integral part of a plastic molding consisting of metal, or other material, which may be 8
9 molded into position or may be pressed into the molding after the molding is completed. J JETTING A turbulent flow of resin from an undersized gate, or thin section, into a thicker mold section. This is opposed to a laminar flow of material progressing radially from a gate to the extremities of the cavity. JIG A means of holding a part and guiding a tool during a machining or assembly operation. K KNIT LINE A mark on a molded piece made by the meeting of two flow fronts during molding. It can also be called a weld line. L LIM (LIQUID INJECTION MOLDING) A process used to produce silicone parts using an injection molding machine. The silicone is a thermoset resin, and is injected as a two-part liquid into a heated mold where the silicone rubber is solidified (vulcanized). LIFTER A moving part of the mold used to release parts that will not eject normally because the part has an undercut feature. Lifters are part of the ejector system of a mold. LIGHT RESISTANCE The ability of plastic materials to resist fading after exposure to sunlight or ultraviolet light. LIVING HINGE A thin section between two thicker parts that is flexible and acts like a hinge. Using the correct plastic material allows the hinge to be living which means it can open and close repeatedly without the plastic cracking. LOW TEMPERATURE FLEXIBILTY The ability of plastic to withstand fracturing at low temperatures. M MAR RESISTANCE A glossy plastic s resistance to damage caused by abrasion. MASTERBATCH An off-the-shelf combination of pigments, fillers, additives and other substances within a polymer base. MATTE FINISH A dull, non-reflective finish on a molded part. MELT FLOW The viscosity of a polymer based on the polymer s weight when extruded under certain pressure and temperature. 9
10 MELT FLOW INDEX A scientific measure of how easily molten plastic will flow during the injection molding process. Various grades of the same material may have different melt flow index numbers. MEMORY A plastic article s tendency to revert to previous dimensions. METALIZING Covering or coating any plastic item with metal. MINERAL REINFORCEMENTS Are inorganic substances such as clay, mica or talc used as filler in plastics. MOLDING MATERIAL Plastic material, in varying stages of granulation, often comprised of resin, filler, pigments, plasticizers and other ingredients. It is used in the molding operation and also referred to as the molding compound. MOLDING PRESSURE The pressure applied directly, or indirectly, on the molten plastic in the mold to allow the complete transformation to a solid, dense part. MOLDING SHRINKAGE The difference in dimensions between a molding and the mold cavity in which it was molded. MOLD PARTING LINE A mark (sometimes called a witness line ) on a molded part where the halves of a mold come together. MOLD RELEASE A lubricant used to coat a mold cavity to prevent the molded piece from sticking to it, thus facilitating its removal from the mold. MONOMER A relatively simple compound, which can react to form a polymer. MOVABLE PLATEN The platen of a molding machine that moves, thereby opening and closing a plastic injection mold. This platen is moved either by an electric motor, a hydraulic ram or a toggle mechanism. MUD FRAME (MASTER UNIT DIE) A mold frame that remains in the molding machine and works with multiple mold units to save tooling costs and reduce mold changeover times. N NOTCH SENSITIVITY The extent to which the sensitivity of a material to fracture is increased by the presence of a surface in homogeneity such as a notch, a sudden change in section, a crack, or a scratch. Low notch sensitivity is usually associated with ductile materials, and high notch sensitivity with brittle materials. NOZZLE The hollow cored metal nose screwed into the end of the heating cylinder of an injection machine. Molten plastic flows through the nozzle and into the mold. NOZZLE TIP (REMOVABLE) A replaceable tip that installs into the end of the molding machine s nozzle. Nozzle tips must be matched to the mold surface (for sealing off high injection pressures), and to the orifice of the mold sprue. 10
11 O ORIENTATION The alignment of the crystalline structure in polymeric materials so as to produce a highly uniform structure. OUT-OF-ROUND When an item has a non-uniform radius or diameter. P PERMANENT SET The increase in length, expressed in a % of the original length, by which an elastic material fails to return to original length after being stressed for a standard period of time. PINPOINT GATE A restricted orifice through which molten resin flows into a mold cavity. PLASTIC A moldable polymer made of natural and synthetic material and chemicals that can be transformed into a solid. PLASTIC DEFORMATION A change in dimensions of an object under load that is not recovered when the load is removed. (If it is recovered, you have elastic deformation.) PLASTICITY A property of plastics which allows the material to be deformed continuously and permanently without rupture upon the application of a force that exceeds the yield value of the material. PLASTICIZE To soften a material and make it plastic or moldable either by means of a plasticizer or the application of heat. PLASTICIZER A material incorporated in a plastic to increase its workability and its flexibility. PLUNGER The part of an older injection press that applies pressure on the unmelted plastic material to push it into the chamber. It forces plastic melt at the front of the chamber out through the nozzle. POLYMER A compound of high molecular weight derived either by the addition of many smaller molecules, as polyethylene, or by the condensation of many smaller molecules with the elimination of water, alcohol, or the like, as nylon. If two or more monomers are involved, a copolymer is obtained. Some polymers are elastomers, some plastics. POLYMERIZATION A chemical reaction in which the molecules of a monomer are linked together to form large molecules whose molecular weight is a multiple of that of the original substance. PREHEATING The heating of a compound prior to molding or casting in order to facilitate the operation, reduce cycle time, and improve the product. PREMIX A molding compound prepared, prior to and apart from the molding operations, and containing all components required for molding (resin, fillers, catalysts, release agents, and other compounds). 11
12 PROTOTYPE MOLD A simplified mold construction often made from a light metal casting alloy or from an epoxy resin, in order to obtain information for the final mold and/or part design. PURGING Cleaning one color or type of material from the cylinder of an injection molding machine by forcing it out with a purge compound, or with the new color/material to be used in subsequent production. R RECIPROCATING SCREW In injection molding machines, a combination device that 1) melts (by friction heat) and mixes the plastic resin by rotating the screw, and 2) injects the plastic into the mold as it acts like a plunger (reciprocating action). REINFORCED MOLDING COMPOUND A material reinforced with special fillers to meet specific requirements. REINFORCEMENT A strong inert material bound into a plastic to improve its strength, stiffness, and impact resistance. RESIN Another name for plastic, as in plastic resin. RIB A reinforcing member of a fabricated or molded part. ROCKWELL HARDNESS A common method of testing material for resistance to indentation in which a diamond or steel ball, under pressure, is used to pierce the test specimen. RUBBER Is an elastomer capable of rapid elastic recovery after being stretched to at least twice its length at temperatures from 0 to 150 F and at any humidity. RUNNER In an injection mold, the channel that connects the sprue with the gate to the cavity is the runner. RUNNER SYSTEM The term applied to all the material (sprues, runners and gates) which lead material from the nozzle of an injection machine to the mold cavity. S SHELF LIFE An expression to describe the time a molding compound can be stored without losing any of its original physical or molding properties. SHORT SHOT A molded part produced when the mold has not been filled completely. SHOT The yield from one complete molding cycle, including sprue, runner, and parts. SHOT CAPACITY The maximum volume/weight of material which a machine can inject from one forward motion of the screw. SHUT OFF Where pieces of metal in an injection mold come together (touch off). If the area of 12
13 shut off has a gap, excess plastic material will fill the gap and create a defect condition called flash. SIDE CORING OR SIDE DRAW PINS Projections used to core a hole in a direction other than the line of closing of a mold and which it must be withdrawn before the part is ejected from the mold. SILICONE A chemical derived from silica used in molding as a release agent and a general lubricant. SILK SCREEN PRINTING The laying of a pattern of insoluble material on a finely woven fabric, so that ink drawn across it is able to pass through the screen only in the desired areas. SINK MARK A depression or dimple on the surface of an injection molded part due to collapsing of the surface following local internal shrinkage after the gate seals. SLIDES Parts of injection molds that form undercuts (e.g., a hole) in the part, and are designed to move out of the way to allow the part to eject. SOLVENT Any substance, usually a liquid, which dissolves other substances. SPECIFIC GRAVITY The density (mass per unit volume) of any material divided by the density of water. SPIDER GATE Multi-gating of a part through a system of radial runners from the sprue. SPIN WELDING A process of fusing two objects together by forcing them together while one of the pair is spinning until frictional heat melts the interface. Upon melting, spinning is then stopped and pressure held until they are frozen together. SPLAY Streaks occurring as the result of moisture in the resin. SPRUE The plastic part formed by the opening/passageway from the molding machine s nozzle tip to the runner system. The sprue hole is tapered so that the sprue will easily release from the sprue bushing. SPRUE BUSHING A hardened steel insert in an injection mold which contains the tapered sprue hole and has a suitable seat for the nozzle of the injection cylinder. SPRUE GATE A passageway through which molten resin flows from the nozzle to the mold cavity. SPRUE LOCK OR PULLER A portion of the sprue which is held in the cold slug well by an undercut. It is used to pull the sprue out of the sprue bushing as the mold is opened. STABILIZER An ingredient used in the formulation of some plastics to assist in maintaining the physical and chemical properties of the compounded materials at their initial values throughout the processing and service life of the material. STATIONARY PLATEN The plate of an injection molding machine, to which the front plate of the mold is secured during operation. This plate does not move (see moving platen definition). 13
14 STICKING A complication during ejection when a part does not release from the mold as intended. STRESS CRACK An internal or external crack in a solid plastic part caused by tensile, compressive, or in some cases shear force. STRIPPER PLATE A plate that strips a molded piece from core pins or the core. It performs the same function as ejector pins. SUBMARINE GATE A type of gate where the opening from the runner into the mold is located below the parting line. With submarine gates, the parts are automatically cut from the runner system as the parts/runner are ejected from the mold. SURFACE FINISH The roughness of a plastic part s surface. For plastic, this is usually measured by visually comparing the part s surface to a surface finish standard. SURFACE TREATING Any method of treating a material so as to alter the surface and render it receptive to inks, paints, lacquers, and adhesives. T TAB GATE A small, removable tab of approximately the same thickness as the molded part, usually located perpendicular to the part. TENSILE STRENGTH The pulling pressure required to break a given plastic specimen. THERMAL CONDUCTIVITY The ability of a material to conduct heat. THERMAL STRESS CRACKING Crazing and cracking of thermoplastic resins, which results from over-exposure to elevated temperatures. THERMOPLASTIC A material that will repeatedly soften when heated and harden when cooled. THERMOSET RESIN A material that, unlike a thermoplastic, can only be molded one time. THREAD PLUG A part of a mold that shapes a thread and must be unscrewed from the finished piece. TIE BARS Are bars which provide structural rigidity to the clamping mechanism of a press used to guide platen movement. TOGGLE ACTION Pressure exerted by the application of force on a knee joint. It is often used as a method of closing presses. TOLERANCE A specified allowance for deviations from the standard dimensions or weight. 14
15 U ULTRASONIC INSERTION The inserting of a metal insert into a thermoplastic part by the application of vibratory mechanical pressure at ultrasonic frequencies. ULTRASONIC WELDING The application of vibratory mechanical pressure at ultrasonic frequencies (20 to 40 kc.) to melt the material between two surfaces that forms a weld as the plastic solidifies. UNDERCUT Having a protrusion, or indentation, that impedes withdrawal from a two-piece, rigid mold. It should be noted that flexible materials can be ejected intact, even with slight undercuts. UV STABALIZER Any chemical compound which, when admixed with a thermoplastic resin, selectively absorbs UV or ultra violet rays to reduce degradation due to UV light. V VACUUM METALIZING The process in which surfaces are thinly coated with metal by exposing them to the vapor of metal that has been evaporated under vacuum. VENT In a mold, a very shallow channel or minute hole cut in the cavity to allow air to escape as the material enters. VISCOSITY The measure of a melted plastic s ability to resist flow. In fluids, high viscosity may be thought of as thickness, and low viscosity as runniness. VOID A void or bubble occurring in the center of a heavy thermoplastic part. W WARP (WARPAGE) A curving or bending that results as a part cools and shrinks at varying rates along a surface. WATER ABSORPTION The ability of a thermoplastic material to absorb water from an environment. WELDING The act of joining thermoplastic pieces by one of several heat-softening processes (spin welding, butt fusion, or ultrasonic welding). WELD LINE A mark on a molded piece made by the meeting of two flow fronts during molding. It can also be called a knit line. Y YIELD VALUE The lowest stress at which a material undergoes plastic deformation. 15
16 About GreenLeaf: GreenLeaf Industries is an ISO 9001 registered manufacturer that consistently adheres to all its standards to provide our clients with consistent, reliable, quality automotive and industrial plastic parts. We are an American company, unafraid to compete in the world market and determined to succeed. Established in 1999, we take pride in our high-quality craftsmanship and superior customer service. Visit us at Contact Us GreenLeaf Industries 310 Bussell Ferry Road Lenoir City, TN p (865) f (865) Follow our social profiles where we place only our best tips and content. Visit Our Website This work is licensed under the Creative Commons Attribution - NonCommercial 3.0 Unported License.You may adapt, copy, distribute and transmit this work attributed to GreenLeaf Industries. 16
CHAPTER 5: MOULDING PROCESS
CHAPTER OUTLINE CHAPTER 5: MOULDING PROCESS 5.1 INTRODUCTION 5.2 INJECTION MOULDING 5.3 COMPRESSION AND TRANSFER MOLDING 5.4 BLOW AND ROTATIONAL MOLDING 5.5 PRODUCT DESIGN CONSIDERATIONS 1 5.1 Introduction
More informationInjection moulding. Introduction. Typical characteristics of injection moulded parts
Injection moulding Introduction Injection molding is generally used to produce thermoplastic polymers. It consists of heating of thermo plastic materials until it melts and then injecting into the steel
More informationIntroduction to Manufacturing Processes
Introduction to Manufacturing Processes Products and Manufacturing Product Creation Cycle Design Material Selection Process Selection Manufacture Inspection Feedback Typical product cost breakdown Manufacturing
More informationAll About Die Casting
All About Die Casting FAQ Introduction Die casting is a versatile process for producing engineered metal parts by forcing molten metal under high pressure into reusable steel molds. These molds, called
More informationExtrusion. Process. The photo below shows a typical thermoplastic extruder.
Extrusion This process can be compared to squeezing toothpaste from a tube. It is a continuous process used to produce both solid and hollow products that have a constant cross-section. E.g. window frames,
More informationChapter 1 Sand Casting Processes
Chapter 1 Sand Casting Processes Sand casting is a mold based net shape manufacturing process in which metal parts are molded by pouring molten metal into a cavity. The mold cavity is created by withdrawing
More informationFactors to Consider in Plastic Molded Design
9 Factors to Consider in Plastic Molded Design Table Of Contents Introduction 3 Design 4 1. Draft... 4 2. Surface Finish... 5 3. Witness Lines... 6 4. Wall Thickness... 6 5. Support/Straight Ribs Thickness...
More informationTwo Categories of Metal Casting Processes
Two Categories of Metal Casting Processes 1. Expendable mold processes - mold is sacrificed to remove part Advantage: more complex shapes possible Disadvantage: production rates often limited by time to
More informationDesign Guidelines for Injection Molding
Design Guidelines for Injection Molding TABLE OF CONTENTS INTRODUCTION TO INJECTION MOLDING A. Where is it used? B. Importance of prototyping C. Types of prototypes INJECTION MOLDING BASICS A. The machine
More informationMetal Mould System 1. Introduction
Metal Mould System 1. Introduction Moulds for these purposes can be used many times and are usually made of metal, although semi-permanent moulds of graphite have been successful in some instances. The
More informationGastrow Injection Molds
Paul Unger (Ed.) Gastrow Injection Molds Sample Chapter 1: Principles of Mold Design ISBNs 978-1-56990-402-2 1-56990-402-2 HANSER Hanser Publishers, Munich Hanser Publications, Cincinnati 1.1 Types of
More information- sprue gate - pinpoint gate - fan gate - tunnel gate
Moulds for processing of thermosetting moulding compounds 1. Sprue and Runner Systems and Gates Sprues should have either a round cross-section or a rounded trapezoidal construction and must have well-polished
More informationUniversity of Arizona College of Optical Sciences
University of Arizona College of Optical Sciences Name: Nachiket Kulkarni Course: OPTI521 Topic Plastic Injection Molding Submitted to Prof. J. Burge Date 1. Introduction In daily life, we come across
More information(( Manufacturing )) Fig. (1): Some casting with large or complicated shape manufactured by sand casting.
(( Manufacturing )) Expendable Mold Casting Processes: Types of expendable mold casting are: 1 ) Sand casting. 2 ) Shell molding. 3 ) Vacuum molding. 4 ) Investment casting. 5 ) Expanded polystyrene process.
More informationSUBMITTED BY: MANEET KOHLI ROLL NO.
SUBMITTED BY: MANEET KOHLI ROLL NO. 11 INJECTION MOLDING Injection molding is nowadays the most popular method to produce 3-dimensional parts of different kinds of polymeric materials. It is a fast process
More informationMold Design. 5. Mold Structure. Bong-Kee Lee School of Mechanical Engineering Chonnam National University
5. Mold Structure Bong-Kee Lee Chonnam National University the simplest and most reliable design has the fewest number of moving parts and is more straightforward to manufacture and run in production is
More information4.1.3: Shell Casting.
4.1.3: Shell Casting. It is another expandable mold casting type; Shell molding is a casting process in which the mold is a thin shell (typically 9mm) made of sand held together by a thermosetting resin
More informationSection 914. JOINT AND WATERPROOFING MATERIALS
914.01 Section 914. JOINT AND WATERPROOFING MATERIALS 914.01. General Requirements. Joint and waterproofing material for use in concrete construction must meet the requirements of this section. 914.02.
More informationBMM3643 Manufacturing Processes Metal Casting Processes (Sand Casting)
BMM3643 Manufacturing Processes Metal Casting Processes (Sand Casting) by Dr Mas Ayu Bt Hassan Faculty of Mechanical Engineering masszee@ump.edu.my Chapter Synopsis This chapter will expose students to
More informationCHAPTER 4: METAL CASTING PROCESS
CHAPTER 4: METAL CASTING PROCESS CHAPTER OUTLINE 4.1 INTRODUCTION 4.2 EXPANDABLE MOLD CASTING PROCESSES 4.2.1 Sand Casting 4.2.2 Shell Molding 4.2.3 Plaster Mold Casting 4.2.4 Ceramic Mold Casting 4.2.5
More informationInjection moulding BUDAPEST UNIVERSITY OF TECHNOLOGY AND ECONOMICS FACULTY OF MECHANICAL ENGINEERING DEPARTMENT OF POLYMER ENGINEERING
B3 BUDAPEST UNIVERSITY OF TECHNOLOGY AND ECONOMICS FACULTY OF MECHANICAL ENGINEERING DEPARTMENT OF POLYMER ENGINEERING Injection moulding INJECTION MOULDING OF THERMOPLASTICS WWW.PT.BME.HU LOCATION OF
More informationInjection Molding from 3D Printed Molds. A study of low-volume production of small LDPE parts FORMLABS WHITE PAPER:
FORMLABS WHITE PAPER: Injection Molding from 3D Printed Molds A study of low-volume production of small LDPE parts August 25, 2016 Formlabs and Galomb Inc. formlabs.com Table of Contents Introduction........................
More informationWire and tube Drawing
Wire and tube Drawing Drawing is an operation in which the cross-section of solid rod, wire or tubing is reduced or changed in shape by pulling it through a die. The principle of this procedure consist
More informationMetal Casting Processes CHAPTER 11 PART I
Metal Casting Processes CHAPTER 11 PART I Topics Introduction Sand casting Shell-Mold Casting Expendable Pattern Casting Plaster-Mold Casting Introduction Metal-Casting Processes First casting were made
More informationPermanent Mold Casting Processes. Assoc Prof Zainal Abidin Ahmad Department of Manufacturing & Ind. Eng.
Assoc Prof Zainal Abidin Ahmad Department of Manufacturing & Ind. Eng. Universiti Teknologi Malaysia Permanent Mold Casting Processes Gravity die casting Pressure die casting Low pressure High pressure
More informationCorso di Studi di Fabbricazione
Corso di Studi di Fabbricazione 3a Richiami dei processi tecnologici di trasformazione FUNDAMENTAL OF METAL FORMING 1 METAL FORMING Large group of manufacturing processes in which plastic deformation is
More informationSolidification Process(1) - Metal Casting Chapter 9,10
Solidification Process(1) - Metal Casting Chapter 9,10 Seok-min Kim smkim@cau.ac.kr -1- Classification of solidification processes -2- Casting Process in which molten metal flows by gravity or other force
More informationManufacturing Processes - I Dr. D. B. Karunakar Department of Mechanical and Industrial Engineering Indian Institute of Technology, Roorkee
Manufacturing Processes - I Dr. D. B. Karunakar Department of Mechanical and Industrial Engineering Indian Institute of Technology, Roorkee Lecture - 4 Module 2 Metal Casting Good morning, Metal casting,
More informationDesign of Singe Impression Injection Mould for Lower Bearing Cover
Design of Singe Impression Injection Mould for Lower Bearing Cover Vishwanath DC Student, M. Tech Government Tool Room and Training Centre Mysuru, India Abstract Injection moulding is one of the techniques
More informationMETAL CASTING PROCESSES
METAL CASTING PROCESSES Sand Casting Other Expendable Mold Casting Processes Permanent Mold Casting Processes Foundry Practice Casting Quality Metals for Casting Product Design Considerations Two Categories
More informationUnit IV Drawing of rods, wires and tubes
Introduction Unit IV Drawing of rods, wires and tubes Drawing is a process in which the material is pulled through a die by means of a tensile force. Usually the constant cross section is circular (bar,
More informationTrade of Toolmaking. Module 5: Press Tools, Jigs & Fixtures, Mouldmaking Unit 10: Mould Assembly Phase 2. Published by
Trade of Toolmaking Module 5: Press Tools, Jigs & Fixtures, Mouldmaking Unit 10: Mould Assembly Phase 2 Published by SOLAS 2014 Unit 9 1 Table of Contents Document Release History... 3 Unit Objective...
More informationProcessing of Non- Metals Dr. Inderdeep Singh Department of Mechanical and Industrial Engineering Indian Institute of Technology, Roorkee
Processing of Non- Metals Dr. Inderdeep Singh Department of Mechanical and Industrial Engineering Indian Institute of Technology, Roorkee Module - 4 Plastics: properties and processing Lecture - 7 Rotational
More informationFUNDAMENTAL MANUFACTURING PROCESSES Plastics Machining & Assembly NARRATION (VO): AN ASSEMBLY METHOD. NARRATION (VO): MANUALLY..., OR AUTOMATICALLY.
Copyright 2002 Society of Manufacturing Engineers --- 1 --- FUNDAMENTAL MANUFACTURING PROCESSES Plastics Machining & Assembly SCENE 1. CG: Plastics Assembly white text centered on black SCENE 2. tape 739,
More informationManufacturing Processes (continued)
Manufacturing (continued) Machining Some other processes Material compatibilities Process (shape) capabilities Manufacturing costs Correct pg 142, question 34i should read Fig 6.18 question 34j should
More informationManufacturing: Chapter 3 Casting
CHAPTER THREE Metal Casting Casting, shown in Fig. 3.1, is the process of pouring molten metal into a mould containing a cavity, which represents the required product shape. It is one of the most commonly
More informationSpecial Casting Process. 1. Permanent mould casting
Special Casting Process 1. Permanent mould casting A permanent mold casting makes use of a mold or metallic die which is permanent.molten metal is poured into the mold under gravity only and no external
More informationInvestment Casting Design Parameters Guide for Buyer
Investment Casting Design Parameters Guide for Buyer The following guidelines and technical information outline what an investment casting is capable of offering. It will cover dimensional and structural
More informationCASTING. Dept. of Mech & Mfg. Engg. 1
CASTING 1 CASTING It is the process of producing metallic parts by pouring a molten metal in to the mould cavity and allowing the metal to solidify. 2 Casting Process Pattern making Mould making Metal
More informationEVERYTHING TO KNOW ABOUT OVERMOLDED CABLE ASSEMBLIES
EVERYTHING TO KNOW ABOUT OVERMOLDED CABLE ASSEMBLIES By Brian Morissette, Cable Assembly Product Manager Epec Engineered Technologies Overmolding has dramatically changed the appearance and functionality
More informationCasting Process Lec byprof. A.Chandrashekhar
Casting Process Lec 18-20 byprof. A.Chandrashekhar Introduction casting may be defined as a metal object obtained by pouring molten metal in to a mould and allowing it to solidify. Casting process is
More informationProcesses Advantages Disadvantages Identifying features Products
Plastics Processes Plastics manufacturing processes are mostly mass production processes with high volumes of output. The high cost of machinery and tooling is offset by the speed and volume of production.
More informationBetter by Design: Guidelines for Designing the Perfect Plated Piece
MPC Technical Library Better by Design: Guidelines for Designing the Perfect Plated Piece Suggestions, tips and design considerations for enhancing plated part appearance, improving performance and facilitating
More informationDrawing. Fig. 1 Drawing
Drawing Drawing is a metalworking process which uses tensile forces to stretch metal. It is broken up into two types: sheet metal drawing and wire, bar, and tube drawing. The specific definition for sheet
More informationDESIGN AND DEVELOPMENT OF FAMILY INJECTION MOULD FOR INNOVATIVE PLASTIC IN AND INNOVATIVE PLASTIC OUT
International Journal of Emerging Technology and Innovative Engineering Volume 1, Issue 9, September 2015 (ISSN: 2394 6598) DESIGN AND DEVELOPMENT OF FAMILY INJECTION MOULD FOR INNOVATIVE PLASTIC IN AND
More informationTaking MIM Tooling To the Next Level. Originally published in The American Mold Builder Magazine, February 2014
Taking MIM Tooling To the Next Level Originally published in The American Mold Builder Magazine, February 2014 1 Metal injection molding (MIM) merges two established technologies, plastic injection molding
More informationTOOLKIT PART 4 MANUFACTURING PROCESSES
Understanding which manufacturing process has been used to make an object can help you identify its material as different materials are manufactured with different process. Different manufacturing processes
More informationINJECTION MOULDING OF PLASTICS INJECTION MOULDING
INJECTION MOULDING OF PLASTICS INJECTION MOULDING The Material Hopper The Barrel/Cylinder heating system The Barrel/Cylinder and Screw Adhesion Abrasion Corrosion Datamination The Screw Drive System The
More informationProcessing of Non-Metals Prof. Dr. Inderdeep Singh Department of Mechanical and Industrial Engineering Indian Institute of Technology, Roorkee
Processing of Non-Metals Prof. Dr. Inderdeep Singh Department of Mechanical and Industrial Engineering Indian Institute of Technology, Roorkee Module - 4 Plastics: Properties and Processing Lecture - 5
More informationMolded Parts and Mold Design
Molded Parts and Mold Design July 29, 2009 Introduction Importance of Proper Mold Design Design Considerations Overview of Design Process SolidWorks & Mold Design Overview of Mold Design Most common method
More informationSteel Plate in Oil Rig Blowout Preventer Valves
Design Problem Steel Plate in Oil Rig Blowout Preventer Valves Introduction Design for Performance Alloy selection Radii and stress reduction Design for Production Mould method Orientation and cores Controlling
More informationAirframes Instructor Training Manual. Chapter 3 MANUFACTURING TECHNOLOGY
Learning Objectives Airframes Instructor Training Manual Chapter 3 MANUFACTURING TECHNOLOGY 1. The purpose of this chapter is to discuss in more detail, the tools and processes technology that is utilised
More informationMetal Stamping Glossary
Metal Stamping Glossary Alloy - A substance that has metallic properties and is composed of two or more chemical elements of which at least one is an elemental metal. Annealing - A process involving the
More informationMetal Working Processes
Metal Working Processes Bachelor of Industrial Technology Management with Honours Semester I Session 2013/2014 CLASSIFICATION OF MANUFACTURING PROCESSES TOPIC OUTLINE What is Sheet Metal? Sheet Metalworking
More informationTypes of moulding sand
casting Types of moulding sand 1. Green sand: Green sand which is also known as natural sand is the mostly used sand in moulding. It is basically the mixture of sand, clay and water. The clay contain
More informationProcessing of Plastics
Processing of Plastics Bachelor of Industrial Technology Management with Honours Semester I Session 2013/2014 TOPIC OUTLINE Introduction of Plastics Classification of Plastics Types of Plastic Plastics
More informationInjection Molding Principles
Injection Molding Principles R&D Center 1. What is injection molding? Most engineering plastics are being manufactured by injection molding and it is important to understand both its procedures and precautions.
More informationModule 3 Selection of Manufacturing Processes
Module 3 Selection of Manufacturing Processes Lecture 4 Design for Sheet Metal Forming Processes Instructional objectives By the end of this lecture, the student will learn the principles of several sheet
More informationDESIGN & ASSEMBLY GUIDE. D-M-E Collapsible Core and Collapsible Mini-Core
DESIGN & ASSEMBLY GUIDE D-M-E Collapsible Core and Collapsible Mini-Core TABLE OF CONTENTS D-M-E Collapsible Core & Collapsible Mini-Core This data is designed to assist you in using the D-M-E Collapsible
More informationLecture - 05 Thermoforming Processes
Processing of Polymers and Polymer Composites Dr. Inderdeep Singh Department of Mechanical and Industrial Engineering Indian Institute of Technology, Roorkee Lecture - 05 Thermoforming Processes Namaskar
More informationExample 33, Three-Plate Injection Mold with Stripping Device for a Precision Magazine
88 3 Examples Example 33 Example 33, Three-Plate Injection Mold with Stripping Device for a Precision Magazine Integrated circuits (IC) are generally mounted automatically during production of electronic
More informationManufacturing Process - I
Manufacturing Process - I UNIT III Plastic Processing Prepared By Prof. Shinde Vishal Vasant Assistant Professor Dept. of Mechanical Engg. NDMVP S Karmaveer Baburao Thakare College of Engg. Nashik Contact
More informationInterior Design Materials. Glass & Ceramics. Haval Sami Ali
Interior Design Materials Glass & Ceramics Haval Sami Ali haval.sami@ishik.edu.iq Glass Glass and ceramics are related materials, and glass is sometimes considered as no crystalline ceramic. Clay-based
More informationDesign and Technology Resistant materials Key words and definitions
Design and Technology Resistant materials Key words and definitions Word Acrylic Definition a type of thermoplastic, which is hard and can be transparent. Used to make shop signs. Perspex is a trade/brand
More informationThis Injection Mold Standard is used for the design and fabrication of Plastic Injection Molds.
This Injection Mold Standard is used for the design and fabrication of Plastic Injection Molds. 1. Mold Design 1.1. A preliminary mold design review will be conducted, preferably with the customer present,
More informationD E S I G N A N D M A N U F A C T U R E : C O U R S E M A T E R I A L
UNIT D E S I G N A N D M A N U F A C T U R E : C O U R S E M A T E R I A L metalwork processes Screw Threads The screw thread is a very important detail in engineering. It is used to hold parts together.
More informationInjection moulding BUDAPEST UNIVERSITY OF TECHNOLOGY AND ECONOMICS FACULTY OF MECHANICAL ENGINEERING DEPARTMENT OF POLYMER ENGINEERING
B3 BUDAPEST UNIVERSITY OF TECHNOLOGY AND ECONOMICS FACULTY OF MECHANICAL ENGINEERING DEPARTMENT OF POLYMER ENGINEERING Injection moulding INJECTION MOULDING OF THERMOPLASTICS WWW.PT.BME.HU LOCATION OF
More informationTrade of Toolmaking. Module 5: Press Tools, Jigs & Fixtures, Mouldmaking Unit 7: Injection Moulds Phase 2. Published by
Trade of Toolmaking Module 5: Press Tools, Jigs & Fixtures, Mouldmaking Unit 7: Injection Moulds Phase 2 Published by SOLAS 2014 Unit 7 1 Table of Contents Document Release History... 3 Unit Objective...
More informationDesign of Jigs, Fixtures, Press Tools and Moulds UNIT - 1 LOCATING AND CLAMPING PRINCIPLES
Design of Jigs, Fixtures, Press Tools and Moulds UNIT - 1 LOCATING AND CLAMPING PRINCIPLES 1. Define the term Tool design. Tool design is the process of designing and developing the tools, methods, and
More informationWelding Engineering Dr. D. K. Dwivedi Department of Mechanical & Industrial Engineering Indian Institute of Technology, Roorkee
Welding Engineering Dr. D. K. Dwivedi Department of Mechanical & Industrial Engineering Indian Institute of Technology, Roorkee Module - 4 Arc Welding Processes Lecture - 8 Brazing, Soldering & Braze Welding
More informationFasteners. Metal Fasteners, Joining, and Adhesives. Bolts. Metal Fasteners, Joining, and Adhesives
Metal Fasteners, Joining, and Adhesives Fasteners Metal assemblies are often held together with fasteners, hardware devices that mechanically join or affix two or more objects together. Assembling with
More informationMANUFACTURING PROCESSES
1 MANUFACTURING PROCESSES - AMEM 201 Lecture 10: Casting Technology DR. SOTIRIS L. OMIROU CASTING - Basics - A material in a liquid or semisolid form is poured or forced to flow into a die cavity and allowed
More informationUnderstanding the Wire EDM Process
5 Understanding the Wire EDM Process 81 Accuracy and Tolerances Wire EDM is extremely accurate. Many machines move in increments of 40 millionths of an inch (.00004") (.001 mm), some in 10 millionths of
More informationPLASTIC FURNITURE MANUFACTURING PROCESS I N T D F U R N I T U R E A N D F I T T I N G S
PLASTIC FURNITURE MANUFACTURING PROCESS I N T D 3 0 1 F U R N I T U R E A N D F I T T I N G S COMMON MANUFACTURING METHODS FOR PLASTIC FURNITURE 1. MOLDING 1. Extrusion molding 2. Injection molding 3.
More informationManufacturing Processes - I Dr. D. B. Karunakar Mechanical and Industrial Engineering Department Indian Institute of Technology, Roorkee
Manufacturing Processes - I Dr. D. B. Karunakar Mechanical and Industrial Engineering Department Indian Institute of Technology, Roorkee Module - 2 Lecture - 7 Metal Casting Good morning. We have been
More informationExploration of a Student Project in a Materials Processing Course
Paper ID #8093 Exploration of a Student Project in a Materials Processing Course Prof. Somnath Chattopadhyay, Georgia Southern University c American Society for Engineering Education, 2013 EXPLORATION
More informationTooling Approving Report
Project Name: Part Name: Tool Name: Tool source: Tool Steel: Resin: Project Number: Part Number: Tool Number: Customer: No of Cavities: Machine Size: CAVITY What is the customer required core hardness?
More informationARTICLE 28 VISUAL EXAMINATION STANDARDS
ARTICLE 28 VISUAL EXAMINATION STANDARDS Specification for Classifying Visual Defects in Glass-Reinforced Laminates and [ASTM D 2563-70 Parts Made Therefrom... 639 (1977)] 637 ARTICLE 28 VISUAL EXAMINATION
More informationDesign Guidelines for FDM technology
Design Guidelines for FDM technology This guideline is supposed to be used by people who already have knowledge in 3D design, CAD/CAM, etc. and it s goal is to show the key points when designing a model
More informationInjection Molding Design Guide. Design considerations for rapid manufacturing of plastic parts using injection molding
Injection Molding Design Guide Design considerations for rapid manufacturing of plastic parts using injection molding Table of contents 1 Injection mold tooling process comparison 3 2 Size considerations
More informationPer-Fix Flaw Repair Overview
II.:::.~ chem-pak, 1Nc. Per-Fix Flaw Repair Overview Why Choose Flaw Repair Coatings Reduce scrap, eliminate rework and improve quality with Per-Fix specialty polymer flaw repair coatings. Salvage costly
More informationMould Precision Co., Ltd
Program Name: Part Name: Tool Name: Tool Source: Tool Steel: Resin: NL9502 314501 MP1425 Mould Precision Co., Ltd Finished Mould Checklist H13 HRC 48-52 ABS HF380(LG Chem) Program No.: Part No.: Tool No.:
More informationMould Precision Co., Ltd
Mould Precision Co., Ltd Program Name: Part Name: Tool Name: Tool source: Tool Steel: Resin: Finished Mould Checklist Program No.: MP15016 NL00326-2G rev04 Part No.: MP15016 Tool No.: MP15016 Customer:
More informationjoining materials - wood
UNIT D E S I G N A N D M A N U F A C T U R E : C O U R S E M A T E R I A L Wood joints joining materials - wood The majority of joints used in woodcraft have been designed specifically to attain the maximum
More informationMid term Review Questions P a g e 1 CASTING
Mid term Review Questions P a g e 1 Q1: Define the casting process? CASTING A1: Casting is the process of pouring molten metal into a mould containing a cavity, which represents the required product shape
More informationMold Release, Break-In, Maintenance and Storage. Linda Bergstrom
Mold Release, Break-In, Maintenance and Storage Linda Bergstrom Mold Release Requirements Form a barrier between the mold and molded part Provide a lubricating film which allows the molded part to be easily
More informationWhite paper. Exploring metal finishing methods for 3D-printed parts
01 Exploring metal finishing methods for 3D-printed parts 02 Overview Method tested Centrifugal disc Centrifugal barrel Media blasting Almost all metal parts whether forged, stamped, cast, machined or
More information1. There is a variety of casting processes. Many casting process characteristics are similar
CHAPTER 14 Expendable-Mold Casting Processes Review Questions 1. There is a variety of casting processes. Many casting process characteristics are similar but each has distinct characteristics that determine
More informationCASTING Fundamentals. Prepared by Associate Prof. Mohamed Ahmed Awad Cairo, 2014
CASTING Fundamentals Prepared by Associate Prof. Mohamed Ahmed Awad Cairo, 2014 Casting Definition Casting is the process of pouring molten metal into a mould containing a cavity, which represents the
More informationOperating & Maintenance Instructions 320 Dome Blowing Unit
Operating & Maintenance Instructions 320 Dome Blowing Unit Table of Contents 1. On Delivery... 2 2. General Information... 3 3. Dome Blowing Technique... 4 4. Other Shapes... 6 5. Machine Maintenance...
More informationSpecification
Specification 2018-04 Class: Test Instruction, Conditions of delivery Class No.:61 Technical conditions of delivery for elastomer parts JED 220 Previous Edition Part name (for databases) 2015-06 Elastomer,
More informationMultiflex. Trouble Shooting Guide. Thermoplastic Elastomers. Injection molding. Extrusion. Overmolding. Trouble Shooting Guide
Multiflex Thermoplastic Elastomers Trouble Shooting Guide Injection molding Extrusion Overmolding M a t e r i a l s t o w i n TROUBLE-SHOOTING GUIDE - INJECTION MOULDING Incomplete fill Air entrapment
More informationMakrolon Solid Polycarbonate Sheets
1. General remarks Tools sheets can be machined using the standard tools commonly used for metal and woodworking. We recommend carbide-tipped tools. Above all, it is important to use sharp cutting tools
More informationFastener Design. Fastener Materials. Coated Corrosion-Resistant Fasteners. Metal Alloy Capped Fasteners
Threaded fasteners for roofing and siding systems are available in a wide range of materials, designs, and coatings. When specifying your fastener, be sure to choose one that has a performance life equaling
More informationMasking: Each mirrored sheet is well protected by a durable paint backing and
STORAGE Horizontal storage: If mirror sheets are stored flat, care must be taken to avoid warping, slipping and scratching. If different sizes are stored together the largest panels should at the bottom
More informationVIEWpanel Technical Manual
VIEWpanel Technical Manual VIEWpanel is a prefabricated panel comprising 0.21 aluminium skin (1100 alloy) both sides, apart from our lite grade, which is 0.12 aluminium skin both sides and a polyethylene
More informationEngineering & Design: Coordinate Dimensioning
s e c t i o n Section Contents NADCA No. Format Page Frequently Asked Questions (FAQ) -2 1 Introduction -2 2 Section Objectives -3 3 Standard and Precision Tolerances -3 4 Production Part Technologies
More informationQuality Procedure QP159 General Requirements for Machined Parts
1. PURPOSE 1.1. This procedure provides general product fabrication requirements. It also provides interpretation of certain requirements specified on product drawings, models, and electronic files. 2.
More informationFUNDAMENTAL MANUFACTURING PROCESSES Plastics Machining & Assembly NARRATION (VO): NARRATION (VO): NARRATION (VO): INCLUDING: METALS,
Copyright 2002 Society of Manufacturing Engineers --- 1 --- FUNDAMENTAL MANUFACTURING PROCESSES Plastics Machining & Assembly SCENE 1. CG: Plastics Machining white text centered on black SCENE 2. tape
More informationCasting Process Part 1
Mech Zone Casting Process Part 1 (SSC JE Mechanical/ GATE/ONGC/SAIL BHEL/HPCL/IOCL) Refractory mold pour liquid metal solidify, remove finish Casting - Process of Producing Metallic Parts by Pouring Molten
More information