Extrusion. Process. The photo below shows a typical thermoplastic extruder.
|
|
- Sheena Dickerson
- 5 years ago
- Views:
Transcription
1 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, hose pipe, curtain track, garden trellis. Process The photo below shows a typical thermoplastic extruder. Thermoplastic granules (below) are fed from a hopper by a rotating screw through a heated cylinder. The tapered shape of the screw (below) compacts the plastic as it becomes plasticized. This part of the process is similar to the heating and compacting stages in the injection moulding process. The difference being that the softened material is allowed to flow out through a die in a continuous stream rather than be pumped intermittently in measured amounts into a mould. The die (below) which is fitted to the end of the extruder barrel determines the cross-section of the extrusion.
2 This extrusion is part of a window seal made from thermoplastic elastomer (TPE). Extrusion rates typically vary between nine and sixty metres per minute. Thicker crosssections are extruded more slowly as more time is required for the initial heating and subsequent cooling of the larger quantities of material which are involved. As the extrusion leaves the die it is cooled by passing through a cooling trough (below) containing cold water. The photo below shows the full length of the cooling trough and the extrusion passing through it on its way to be cut to length.
3 The saw (below) cuts the extrusion automatically to the required length. The extrusions (below) can then be assembled into the finished product. The photo (below) shows a completed garden trellis.
4 Injection Moulding process moulds material Injection moulding is a highly automated production process for producing large quantities of identical items. Granulated or powdered thermoplastic material is heated, melted and then forced under pressure into a mould. Once in the mould the material cools, forming a component that takes on the shape of the mould cavity. The photo below shows a typical product manufactured by injection moulding. This toy saxophone has been made in high impact polystyrene (HIPS). Process Plastic powder or granules are fed from a hopper into a hollow steel barrel which usually contains a rotating screw. The barrel is surrounded by a jacket of heaters which melt the plastic material as it is carried along the barrel by the screw towards the mould. This part of the process is similar to the heating and compacting stages in the extrusion process. The screw is forced back as the melted plastic collects at the end of the barrel. Once a sufficient charge of melted plastic has accumulated a hydraulic ram forces the screw forward injecting the thermoplastic through a sprue into the mould cavity. The photo (below) shows a typical injection moulding machine. This one is capable of exerting forces of up to up to 250 tonnes. Pressure is kept on the mould until the plastic has cooled sufficiently for the mould to be opened and the component ejected. Moulds The two part mould shown in the photo below has been machined from high chromium steel (stainless). Moulds like this one cost several thousand pounds to manufacture. However this can be economic as many thousands of components can be produced from a single mould
5 thus resulting in a low cost per item. Different moulds have to be fitted to the machine whenever a new type of product is required. The following set of photographs show both halves of a mould used to produce an "electronics control box". The hydraulic ram has to exert a force of 100 tonnes to produce this moulding in fire retardant ABS. The first photo shows the completed control box ready to be ejected from the mould. The next photo shows the mould after the component has been ejected. The ejector pins can clearly be seen protruding from the mould. The other half of the mould is shown below. The thermoplastic material is injected through the sprue hole located in the centre of this part of the mould.
6 Material Normally thermoplastics are used in this process although a few thermosetting plastics can also be injection moulded. Material properties of the thermoplastic can be altered by adding plasticisers and other chemicals to improve such things as impact and ultra violet (UV) resistance. A wide range of colours are available and this is achieved by adding a 1% colour mix to the usually colourless raw material prior to melting.
7 Vacuum Forming process moulds heater systems forming pressure materials trimming This process is used to manufacture a variety of products in thermoplastic materials. These products range in size from garden pond liners to food trays used in supermarkets. A typical industrial size vacuum forming machine like the one seen below is capable of producing vacuum formings up to 1.8m x 1.5m in size. Process A mould, like the one below, which is used for producing the interior panels of lorry cabs, is attached to a platen (support plate). The platen and mould are then lowered and rigid thermoplastic sheet material is clamped onto an air tight gasket and usually heated from above. Once the thermoplastic sheet is softened enough (i.e. reaches a plastic state) then air is blown in to raise the sheet in a slight bubble before the platen is raised bringing the mould into contact with the plastic. Any trapped air remaining between the platen and the heated plastic sheet is then evacuated by a vacuum pump. Atmospheric pressure acting over the top surface completes the forming process by pressing the plastic sheet onto the mould. Once the plastic sheet has cooled down to below it's freeze point the air flow is reversed to lift the forming off the mould. If this is not done quickly the forming tends to grip onto the mould and attempts to prise them apart often result in damage to the forming. The photo (below) shows completed vacuum formings made in ABS ready for the waste material around the edges to be trimmed off.
8 Moulds Moulds can be made from a variety of materials such as wood, medium density fibreboard (MDF), plaster of paris and clay. MDF is probably the most suitable for "one-off" vacuum formings or short production runs in school workshops Having no grain it is relatively quick and easy to shape compared with solid wood and is also stable whilst being heated in the vacuum forming machine. For higher volumes of production it is necessary to manufacture moulds from harder wearing materials such as aluminium or cast epoxy resin. The photo (below) shows an aluminium mould positioned on the platen of a vacuum forming machine. This pattern is used to produce the base part of a shop display board. It is necessary to have a 5-10 taper or draft angle on the sides of the mould to enable the forming to be separated easily from the mould. This can be seen clearly in the finished moulding (below) which has sides that taper in towards the top. It is important to avoid undercuts as these will also prevent the forming from releasing. Moulds which contain cavities should have vent holes (see below) drilled in positions where there is any possibility of areas of the mould being sealed by the hot thermoplastic sheet as the air is being evacuated.
9 Moulds should have radiused corners and the depth of the draw in straight sided cavities should generally be kept below a width/depth ratio of 2:1 to avoid thinning of the thermoplastic sheet whilst vacuum forming. Heater Systems Electrically powered ceramic heating elements are usually mounted under a heater hood which is attached to the forming machine. Heat from these elements is directed down onto the thermoplastic sheet in order to soften it in readiness for vacuum forming. Groups or zones of heaters are controlled separately by a power regulator so that fine adjustment of output is possible within each zone. This is to compensate for variations in heat loss such as around the heater edges. Some industrial machines can heat the thermoplastic sheet from both sides which can reduce heating times by up to 60%. Forming Pressure The vacuum pump can be connected directly to the platen in small and medium size machines. Larger machines may operate the vacuum pump during the heating cycle to evacuate a reservoir prior to removing air from the space between the mould and the softened thermoplastic sheet. The extra evacuated volume in the reservoir ensures that the air between the mould and the softened plastic sheet is evacuated quickly. The limiting factor of the vacuum forming process is that the forming pressure cannot be greater than atmospheric pressure (14.7psi or 1 bar). This can cause problems when high definition mouldings are required in thermoplastic materials which have poor plasticity properties. This problem is overcome by using a process called Vacuum/Pressure Forming. In this process a pressure chamber is sealed over the top of the hot plastic sheet and compressed air is pumped in to increase the forming pressure above atmospheric pressure. Materials Many types of thermoplastics are suitable for vacuum forming. The most popular is Polystyrene (HIPS). It is relatively cheap, comes in a wide range of colours and is easy to form. Typical thicknesses of sheet material used range from less than 1mm up to 6mm. Material Forming Temp. C Definition ABS 159 Good Extruded Acrylic 160 Good
10 Polycarbonate 200 Good Polyethylene 120 Fair Polypropylene 180 High Polystyrene (HIPS) 120 Good PVC 130 Fair Some thermoplastics (e.g. ABS) require pre-drying in an oven before vacuum forming as moisture blisters may appear on the surface when the material is heated if this is not carried out. Trimming Several methods can be used to remove waste material from the final product. For low volume quantities of vacuum formings a slitting saw can be used. For high volume quantities a clipping press can be used with thin sheet material and for thicker mouldings hand held or CNC (computer numerically controlled) routers are used. The photo (below) shows an ABS vacuum forming of a display sign which ready to be trimmed prior to assembly.
Processing 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 informationCHAPTER FIVE Polymer Forming
CHAPTER FIVE Polymer Forming Plastic raw materials are available in a variety of forms including Powder, viscous fluids, pellets and granules. Product manufacturers use a wide range of processing machinery
More informationDesign & Manufacture
Design & Manufacture Plastics questions What is the difference between thermoplastics and thermosetting plastics? What form can plastics be produced in? Plastics have various advantages over wood and metal.
More informationHigher Product Design
Higher Product Design Processes Processes Methods of joining Click on appropriate star Processes Wood processes Metal processes Plastic processes Click on appropriate star Wood processes Laminating Routing
More informationCHAPTER 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 informationOperating & Maintenance Instructions 25 Injection Moulding Machine
Operating & Maintenance Instructions 25 Injection Moulding Machine Table of Contents 1. Health and Safety Information... 2 2. Upon Receipt... 2 3a. Temperature Controller Settings (Brainchild Controller)...
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 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 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 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 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 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 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 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 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 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 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 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 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 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 information6043 DESIGN AND TECHNOLOGY
www.onlineexamhelp.com www.onlineexamhelp.com CAMBRIDGE INTERNATIONAL EXAMINATIONS GCE Ordinary Level MARK SCHEME for the October/November 2013 series 6043 DESIGN AND TECHNOLOGY 6043/01 Paper 1, maximum
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 informationLGCSE DESIGN AND TECHNOLOGY 0189 REPORT FOR TEACHERS
LGCSE DESIGN AND TECHNOLOGY 0189 REPORT FOR TEACHERS The 2016 Design and technology Paper was composed of 16 questions of which 10 of them formed part A and were compulsory and contributed 28 marks. These
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 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 informationCARL HANSER VERLAG. Herbert Rees. Mold Engineering 2nd edition
CARL HANSER VERLAG Herbert Rees Mold Engineering 2nd edition 3-446-21659-6 www.hanser.de 3 1 Introduction to Mold Engineering Mold Engineering deals with injection molds for thermoplastic molding materials.
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 informationName: Class: Teacher:..
Name: Class: Teacher:.. 1 Plastics The basic raw materials used in the manufacture of plastics are oil, natural gas and coal, but contrary to popular belief, plastics are not a new space age material.
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 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 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 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 information6043 DESIGN AND TECHNOLOGY
UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS GCE Ordinary Level www.xtremepapers.com MARK SCHEME for the October/November 2008 question paper 6043 DESIGN AND TECHNOLOGY 6043/01 Paper 1 (Technology),
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 information0445 DESIGN AND TECHNOLOGY
CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge International General Certificate of Secondary Education MARK SCHEME for the October/November 2015 series 0445 DESIGN AND TECHNOLOGY 0445/32 Paper 3 (Resistant
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 informationPreforming & Preheating
PLASTICS ENGINEERING COMPANY SHEBOYGAN, WISCONSIN 53082-0758 U.S.A 3518 LAKESHORE ROAD POST OFFICE BOX 758 PHONE 920-458 - 2121 F A X 920-458 - 1923 Preforming & Preheating When compression or transfer
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 informationDesign and Manufacture. Level 4. Theory homework
Design and Manufacture Level 4 S3 Theory homework Wood questions Homework 1 1. Briefly explain the term grain when referring to timber. (2) 2. Woods are usually classified into 2 groups, what are they.
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 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 informationCopyright 2004 Society of Manufacturing Engineers. FUNDAMENTAL MANUFACTURING PROCESSES Extrusion Processes NARRATION (VO): NARRATION (VO):
FUNDAMENTAL MANUFACTURING PROCESSES Extrusion Processes SCENE 1. EP43A, GRAPHIC: Plastic Extrusion white text centered on black SCENE 2. EP44A, peter carey narration EP44B, tape 890, 05:28:23-05:28:43
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 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 informationInjection Molding Product Examples
Injection Molding Injection Molding Product Examples Injection Molding Product Examples Injection Molding Machine Basics INJECTION MOULDING OPERATIONS (a) After the mould closes, the screw (not rotating)
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 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 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 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 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 informationUses Fabrications Decoration Signage Artwork Glass alternative
Acrylic A very popular sheet plastic often sold under the trade name Perspex in a variety of colours and finishes such as opaque, clear and translucent. Tough, versatile and available in many thicknesses,
More informationSpecial Casting. By S K Mondal
Special Casting By S K Mondal Shell Moulding The sand is mixed with a thermosetting resin is allowed to come in contact with a heated metal pattern (200 0 C). A skin (shell) of about 3.5 mm of sand and
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 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 information1. List or sketch five entirely different forms in which METAL can be supplied to the school workshop.
Homework 1 - Metals 1&2 1. List or sketch five entirely different forms in which METAL can be supplied to the school workshop. 2. Metals are usually classified as Ferrous and Non-ferrous. Explain what
More informationManufacturing Processes
Manufacturing Processes Product example Manufacturing process definition Deformation processes Casting processes Sheet metalworking Hammer Forging Video Polymer processing How would we manufacture a mountain
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 informationTechnical Department. Curriculum for Excellence. Knowledge & Understanding in Working with Plastic. Recycling Identification Table
Recycling Identification Table Plastic Identification Code (PIC) Type of Plastic Properties Common Packaging Application Polyethylene terephthalate (PET, PETE) Clarity, strength, toughness, barrier to
More informationPart Six. Preparing The Plastics
Preparing The Plastics Preping the plastic basically consists of cutting your choice of plastic stock down to the proper size and fitting it into your tray. As long as the minimum tolerances for the case
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 informationAESOP 3D Imaging Workshop Educational 3D Models
AESOP 3D Imaging Workshop Educational 3D Models Dennis Kriel Dennis Kriel from 3D makerspace http://www.up.ac.za/en/news/post_2062883-south-africas-first-librarymakerspace-opens-at-the-university-of-pretoria
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 informationTECHNICAL APPLICATION GUIDE PolyJet For Injection Molding
Injection molding is one of the most popular manufacturing processes. It is best used to massproduce highly accurate, and often complex, three dimensional (3D) end-use parts. With cycle times ranging from
More informationMN Modelling Objects and Creating Manufacturing Strategy
Abstract This document and the accompanying files describe the process of modelling a bell housing jig using the 3D software Catia V5. The manufacturing process by which the bell housing would be created
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 information6043 DESIGN AND TECHNOLOGY
UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS GCE Ordinary Level MARK SCHEME for the October/November 2010 question paper for the guidance of teachers 6043 DESIGN AND TECHNOLOGY 6043/01 Paper 1, maximum
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 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 informationTwin screw and barrel are the heart of extruders and play very crucial role in extruder.
SHREE RADHEKRISHNA EXTRUSIONS PVT.LTD, a renewed engineering company has been Serving in the field of manufacturing screw & barrel for last more then 20 years. Radhekrishna Extrusions manufactures screw
More informationPrecision Prototyping THE ROLE OF 3D PRINTED MOLDS IN THE INJECTION MOLDING INDUSTRY
By Lior Zonder, Applications Team Leader & Nadav Sella, Solutions Sales Manager, Global Field Operations INTRODUCTION Injection molding (IM) the process of injecting plastic material into a mold cavity
More informationMaterials, tools and processes
Materials, tools and processes Extension material for Level 1 Design and Visual Communication Study Guide ISBN 978-1-877459-02-3, Page 153 Tools Tools are used to work materials to improve their appearance,
More information0445 DESIGN AND TECHNOLOGY
CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education MARK SCHEME for the May/June 2014 series 0445 DESIGN AND TECHNOLOGY 0445/33 Paper 3 (Resistant Materials),
More informationGeneral Certificate of Education Design and Technology: Product Design 3D
General Certificate of Education Design and Technology: Product Design 3D PROD1 Mark scheme 2550 June 2013 Version/Stage: 1.0 Mark schemes are prepared by the Lead Assessment Writer and considered, together
More informationEPS Foam Plant. Paul Russell
EPS Foam Plant Paul ussell EPS Processing Pre-expansion The Pre-expansion phase of manufacturing is simply the swelling of the small bead to almost 50 times its original size through heating and rapid
More informationDesign Guidelines. Pressure Forming
Design Guidelines For Pressure Forming Plastics Design & Manufacturing Centennial, Colorado Pressure Forming 101 This checklist is a guideline for the design and development of pressure formed parts in
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 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 informationPRECISION PROTOTYPING:
PRECISION PROTOTYPING: THE ROLE OF 3D PRINTED MOLDS IN THE INJECTION MOLDING INDUSTRY By Lior Zonder, Applications Team Leader Nadav Sella, Solutions Sales Manager, Global Field Operations INTRODUCTION
More informationPRECISION PROTOTYPING THE ROLE OF 3D PRINTED MOLDS IN THE INJECTION MOLDING INDUSTRY
PRECISION PROTOTYPING THE ROLE OF 3D PRINTED MOLDS IN THE INJECTION MOLDING INDUSTRY By Lior Zonder & Nadav Sella INTRODUCTION Injection molding (IM) the process of injecting plastic material into a mold
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 informationQualification: Level 2 Technical Award in Engineering Level 2 Engineering Theory exam (1) June 2018 Marking scheme
Qualification: 1145-20 Level 2 Technical Award in Engineering 1145-502 Level 2 Engineering Theory exam (1) June 2018 Marking scheme 1a What does the symbol in Figure 1 represent on an orthographic drawing?
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 informationDESIGN & MANUFACTURING OF PLASTIC INJECTION MOULD THREAD COVER
DESIGN & MANUFACTURING OF PLASTIC INJECTION MOULD THREAD COVER Shubham Boralkar 1, Pranit Patil 2, Akash Patil 3, Ajay Warekar 4, Rohit Patil 5 1,2,3,4,5 Mechanical Engineering, Nanasaheb Mahadik College
More informationInjection Moulding Of Plastics
Injection Moulding Of Plastics 1 / 6 2 / 6 3 / 6 Injection Moulding Of Plastics Injection moulding. Injection moulding ( British English) or injection molding ( American English) is a manufacturing process
More informationRefer K& S text, Chapter 7
1 2 Refer K& S text, Chapter 7 Thermosets generally possess better mechanical, thermal, and chemical properties; electrical resistance; and dimensional stability than do thermoplastics 3 4 5 This diagram
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 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 informationGuideline. Casting Selection Process. Table of Contents. Delivery Engineered Solutions
Casting Selection Process Guideline Table of Contents Introduction... 2 Factors In Choosing A Process... 2 Category Details & Requirements... 4 Sand casting... 4 Gravity die casting (also known as permanent
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 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 informationSR2. Rotative blowing for large mass productionof packagings from 0,1 L to 2 L
SR2 Rotative blowing for large mass productionof packagings from 0,1 L to 2 L SR2 PRODUCTION : Maxi Dimensions : Closing force : 1 T Volume : 2000 cm3 Height : 320 mm Diameter : 100 mm MAXIMUM USUAL DIMENSIONS
More informationBMM3643 Manufacturing Processes Metal Casting Processes (Expendable Mold & Permanent Mold)
BMM3643 Manufacturing Processes Metal Casting Processes (Expendable Mold & Permanent Mold) by Dr Mas Ayu Bt Hassan Faculty of Mechanical Engineering masszee@ump.edu.my Chapter Information Lesson Objectives:
More informationFabrication Manual 01/2012
17.1. TOOLS REQUIRED (OVEN DETAILS) An oven or platten heater is essential to conduct thermoforming. The specification for a good thermoforming over is fairly simple: It has to be designed so that the
More informationVacuum Casting in the Loughborough Design School
Vacuum Casting in the Loughborough Design School A Guide for Final Year Students Dr. Richard Bibb Selecting Vacuum Casting for Student Projects Vacuum casting can be an excellent way of creating complex
More informationCastings. 65tons, 7m high, 43cm dia, 1600years old
Castings 65tons, 7m high, 43cm dia, 1600years old At 500/550 pound in weight. The biggest Gravity Die Casting in The World at the Time http://www.rainwater.demon.co.uk/bertha.htm CASTING AND RELATED PROCESSES
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 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 informationSheet Steel Facts. Most common head design for self-drilling, self-tapping screws.
Sheet Steel Facts Fastener Guide for Sheet Steel Building Products August, 2003 Fastener Materials Fasteners are manufactured from several materials and coatings. For the purpose of this fact sheet, the
More informationACRYLITE extruded sheet (FF)
Technical information ACRYLITE extruded sheet (FF) #10 Thermoforming Shop cleanliness is an important factor determining the quality of the parts obtained. It is vital that the thermoforming area is kept
More informationPolyJet For Injection Molding
TECHNICAL APPLICATION GUIDE PolyJet For Injection Molding Injection molding is one of the most popular manufacturing processes. It is best used to mass-produce highly accurate, and often complex, three
More information