Although the name might suggest products are chilled, they are actually processed at room or ambient temperatures which must be below the re-crystallization temperature of the material to be extruded. Read More…
Leading Manufacturers
Stalcop
Thorntown, IN | 765-436-7926Global manufacturer Stalcop specializes in the manufacturing of cold headed parts. Stalcop can meet your needs with specialty solutions, combining processes with secondary operations such as CNC machining and assembly. With over 100 years combined experience, count Stalcop for quality and lower prices! Stalcop serves its customers by offering products and services that are consistent and timely.
Rives Manufacturing, Inc.
Rives Junction, MI | 517-569-3380Since 1992, Rives Manufacturing has provided exceptional service for hot upset, cold headed parts and CNC wire forms. With over 30 years in employee experience for wire forming and cold headed parts business, our employees are ready to serve you with high-quality products. Contact us for your needs today! “We’re more than just capable, we’re exceptional.”
Pearson Fastener
Rockford, IL | 815-397-4460Pearson Fastener Corporation manufactures custom cold-headed fasteners and parts such as bolts, screws, pins and many other shapes, sizes and styles. We use a precise, cold heading process to increase the strength of your product and the efficiency of our process providing you with the best product at the best price. Expert design and competitive pricing make Pearson your source for cold forming.
Fastbolt Corporation
South Hackensack, NJ | 800-631-1980We are committed to customer satisfaction here at Fastbolt Corporation. We stock a wide variety of steel pins which results in fast turnaround on all orders but we also can customize any design to match your requests. Our economical solutions are durable and our seasoned teams are here to answer all of your questions. Contact us today if you would like to learn more about our company!
Cold Extrusion List
Cold Extrusion - Brynolf Manufacturing Inc.Materials that are commonly extruded include soft metals such as aluminum, tin and lead as well as copper, steel, molybdenum and vanadium. In specialized applications polymers, ceramics and other materials are formed by cold heading or cold forming. Of each of these, aluminum is perhaps the most widely used material found in cold extrusion applications.
Cold Extrusion - Brynolf Manufacturing Inc.Stock shapes of these materials are pushed through a die or a series of dies as needed to achieve the desired dimensions. It is important that the raw material, the blank have a larger diameter or cross-section than that needed for the final product. Too small of a billet, ingot, or other stock shape will simply slide through the die unchanged.
Cold extrusion professionals can help determine the necessary materials for a specific task. Manufacturers providing this service offer fast turnaround for finished products with good surface finish, close tolerances and high material integrity. The squeezing effect of extrusion machines produces high density forms as the material is compressed, closing all voids.
The linear motion also elongates the material grains during the process of extrusion creating high strength and hardened parts and components. Automotive, electronic, pyrotechnics, packaging, marine, transport, chemical processing and construction industries consistently reap the benefits of cold extruded parts such as sheets, wires, rods, tubes, pipes, gaskets, seals, film, profiles and more.
Extrusion equipment, be it hot or cold has a relatively basic structure. Each machine has a tubular or cylindrical barrel that houses a punch such as a revolving screw, plunger or ram. In automated applications a hopper is attached and feeds raw materials to the punching apparatus for the process of impact extrusion. Manual extrusion machines have no hopper and instead technicians feed in the materials.
When engaged, the punch pushes the materials along into a die at the opposite end which shapes the extruded mass as needed. There are two main types of cold extrusion available. Forward extrusions employ a punch or ram which forces material forward through an opening in the die, or dies. This gap is designed with the intended cross-section in mind. Successively smaller dies may be used in conjunction with one another to produce reductions as high as 75% with forward extrusions.
Backward extrusion is just as it seems. The materials housed in the die are forced back towards the punch. This technique is used to produce blind holes, cups and the like. While the cross-section may become larger with back extrusions, the overall area is reduced as much as 75%. Several applications necessitate a combination of forward and backward extrusions which, when performed simultaneously, can produce parts with greater complexity than afforded by either extrusion process on its own.
