TENSILKUT ENGINEERING

Transcription

1 TENSILKUT ENGINEERING For Accurate Test Specimens Manufacturer of equipment for the accurate preparation of physical test specimens since 1955 SIEBURG INTERNATIONAL, INC Clydesdale Street, Maryville, Tennessee Phone: (865)

2 TENSILKUT ENGINEERING In 1953, a metallurgist working for a major American company, frustrated by delays in receiving his finished tensile samples from their machine shop, started working on finding a better way to cut his bars, and the Tensilkut was born. Nearly 65 years later, our scope has expanded from flat steel tensile bars to flat, round and notched test specimens made from a wide variety of materials, but the need is the same: test specimens you can make in your lab when you need them. Flat Specimens Round Specimens Notched Specimens Machines for cutting flat bars: Manually operated table and floor models. Basic starter systems. Manually operated, enclosed models with chip shield and other upgrades included Master Templates and Tensilbits for a wide variety of specifications and materials CNC operated, fully enclosed machine with programs written for your specifications. All units designed for use in the lab by techs with no machining experience. Machines for cutting round test specimens: Tensilathe/505 semiautomatic, precision hydraulic tracing lathe. CNC Tensilathe for turning round bars. Programmed in our facility for whatever specifications you need. 3 Jaw chuck included with either lathe; 4 jaw chuck available. Set up for your testing specifications and the materials you use. Easily operated by lab technicians without prior machining experience. Other machines for test specimen preparation: Broach for notching metal impact bars Table top machine for notching plastic impact specimens Double notcher for Iosipescu shear test specimens Shear for straight metal blanks Saw for plastic and composite straight strips Compression test specimens All machines designed for use in the lab, on your schedule.

3 TENSILKUT MACHINES FOR PREPARING FLAT TEST SPECIMENS The true accuracy of physical properties obtained from tensile testing of metals and non-metallics is directly dependent on the accuracy and precision of the test specimen. Commercial lab turnaround time can be lengthy, and relying upon a machinist who doesn't operate on your schedule isn't ideal. With the Tensilkut machine located in your lab, your specimens can be prepared when you need them, in accordance with ASTM and other standards. Tensilkut I Tensilkut II CNC Tensilkut III Table top models Floor models Metal or plastic testing Maximum capacity of.250" to.750", depending upon machine size and material being cut. Tensilmist coolant and Tensilvac chip reduction systems available Cuts tensile, flexural, compression and other flat test specimens Very easy operation Designed for use in the laboratory. Free standing units Sound deadening enclosure around base Chip shield around control head Tensilmist coolant system included Tensilvac chip and dust reduction system included Infinitely variable motor speed control Capacities of.250" to.750" thickness available. For laboratory use Computer controlled flat test specimen cutting system Pre-programmed for the specimens you need. Easy to operate with integral Windows based system Cuts a wide variety of flat test bars Can start with strips or plaques depending upon the material Completely enclosed For laboratory use

4 TENSILKUT EQUIPMENT FOR PREPARING ROUND TEST SPECIMENS Round test specimens have long presented special challenges, for obtaining a perfect specimen with its tight tolerances using a conventional lathe is difficult. The Tensilathe/505 and CNC Tensilathe were both designed with an optimal range of feed and speed rates to ensure that the surface finishes on round tensile bars are as smooth as possible, with minimal tool marks, and tolerances of These machines are both easy to learn to use, having been designed for use by lab technicians, not machinists. Tensilathe/505 CNC Tensilathe.Precision hydraulic tracing lathe Sized for laboratory placement Semi-automatic Precision Master Templates control dimensions of the finished specimen Micrometer control adjusts the dept of cut to within +.001" Mist coolant system built in 3 Jaw Universal precision chuck included 4 Jaw independent precision chuck optionally available Drill Chuck and Live Center included Movable chip guard travels with the tracing head Designed for use by non-machinists Computer controlled lathe for round tensile bars Integrated Windows based computer for easy operation Programmed to order for each customer's specifications Micro-drop coolant system built into the CNC Tensilathe 3 Jaw Universal Precision chuck included 4 Jaw Independent Precision chuck optionally available Drill chuck and Live center included Chip shield included Gauge diameters as small as.112" diameter, and up to 2" diameter

5 TENSILKUT EQUIPMENT FOR NOTCHING IMPACT TEST SPECIMENS Notching metal or plastic blanks for impact testing is challenging. The blanks can be cut with a Tensilkut machine, but the notches must be extremely precise in depth, angle and radius. Impactkut and Impactmill are designed specifically to meet the exacting requirements for the ASTM notches in metal or non-metallic specimens. Impactkut Impactmill For notching metal impact blanks ASTM A370 notches Uses prepared 10mm square or subsized blanks Hydraulically operated Precision 24" long broach Notches in a single stroke Coolant built into the Impactkut Clamps multiple blanks as per the ASTM specification Easy to operate Designed for laboratory use For notching plastic impact blanks ASTM D256 notches Uses.500" wide full sized or subsized blanks Clamping mechanism is designed to hold multiple blanks, including a backer, in accordance with the spec Manually operated Micrometer controlled notch depth Precision cutter rotates at 1000 RPM Notching cutter is completely shielded Built in micrometer to check the depth of the finished notch for accuracy Easy to operate Designed for laboratory use

6 TENSILKUT EQUIPMENT FOR CUTTING STRAIGHT STRIPS An accurate straight strip is the basis for many tests; without it, cutting a tensile, compression or other shaped test bar is more difficult. A slightly oversized straight strip also speeds the finishing of a bar for flexural testing, or of the blank for an impact specimen. It can also be used for a number of tests in its own right, including as blanks for paint and corrosion tests and hardness testing. Tensilkut offers equipment for preparing these strips from metals and non-metallics. Tensilshear Tensilsaw Table mounted hand shear For cutting metal strips Cuts up to 1/8" thick aluminum Cuts up to 1/16" thick steel Shears other metals of similar gauges Cuts strips from very thin foil without deformation Micrometer gauges control the strip width Guide rail ensures that the workpiece is fed under the blade squarely Table mounted laboratory sized saw For cutting plastic, fiberglass, composite and other strips High speed motor Thin diamond blade Guide fence for straight strips Easily adjustable to cut strips 1/4" to 1" wide Maximum thickness about 1/4" Tensilvac for chip and dust reduction available

7 TENSILKUT EQUIPMENT FOR PREPARING IOSIPESCU SHEAR BEND TEST SAMPLES First developed several years ago for an aerospace customer, the V-Mill notches prepared blanks for both the ASTM D5397 and ASTM D7078 shear bend tests. The double notches are precisely aligned using our Master Template system, while the custom diamond cutting wheel ensures accurate notch dimensions. V-Mill I V-Mill II For notching Shear Bend Test samples ASTM D5379 templates standard ASTM D7078 templates standard Uses precision diamond cutting wheel Fast sample completion Accurately aligned notches on both sides of the specimen Optional Tensilvac dust collection system available Easy to operate Designed for laboratory use For notching Shear Bend Test samples ASTM D5379 templates standard ASTM D7078 templates standard Enclosed base greatly reduces motor noise Tensilvac dust collection system built into the machine Precision diamond cutting wheel Fast, accurate notching Easy to operate Designed for laboratory use

8 TENSILKUT MASTER TEMPLATES AND TENSILBITS Tensilkut master templates and Tensilbits are integral to the accuracy of the Tensilkut I and Tensilkut II. Templates for a wide variety of ASTM standards are in stock; others, including those for JIS, ISO, DIN and custom specifications are made to order quickly. Tensilbits with a wide variety of flute patterns for optimal cuts on a wide variety of materials, are in stock. Tensilkut Master Templates Tensilbits Templates for metal and plastic sample preparation ASTM E8 full sized and subsized specimens ASTM D638 Type I, Type II, Type III ASTM D1822 Type S and Type L ASTM D790 for.500" wide and 1.000" wide flexural specimens ASTM D695 for compression testing: templates to cut the gauge section and to cut the ends square and parallel ASTM D412 Die C and Die D Special Templates made to order with the following information: o Overall length and width o Gauge width o Gauge length o Reduced length o Radius o A dimensioned drawing is excellent Tensilbits for most machineable materials flute, carbide tipped for steel, aluminum, copper flute, solid carbide for steel, aluminum, copper, stainless flute, solid carbide for stainless and hard plastics flute, solid carbide for general plastic applications Carbide Burr for composites, glass laminates, fiberglass Kevlar Diamond plated for ceramics, glass laminates, fiberglass and Kevlar All Tensilbits hold the necessary tight tolerance of.500" diameter Tensilbits in stock for fast shipment

9 THE TENSILKUT EDGE Following long established procedure for cutting test specimens, a milling cutter turning at a relatively slow speed removes a heavy cut of material in each pass. This induces cold working distortion, the severity of which can be compounded by dulling of the cutters and a lack of cutting oil. Die cutting causes similar deformations, severely stretching the grains at the edge of the specimen, and requiring extensive hand finishing. These microphotographs show steel specimens cut by conventional methods, compared to the perfect grain in the Tensilkut samples. Edge finish using conventional milling: Note the deformation of the grain along the edge, encompassing the top third of the picture Edge finish using die cutting (blanking): Note the deformation of the grain along the edge, encompassing most of the sample pictured Edge finish using the Tensilkut machine: Note the perfect grain throughout the sample, which will give the most accurate test results possible.