Leading Cold Extrusion Manufacturers

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…

Cold Extrusion Cold extrusion is a popular cold working process in which materials are forced through dies or around punches to produce variable lengths of cross-sectional and profile shapes.

Here at NSK Industries, Inc. we are a turnkey manufacturing which means we will supply your cold forming needs with a short amount of lead time. Our company manages four facilities and we strive to be an unsurpassed supplier. We have the background and production lines that can get your projects done regardless of complexity. We are eager to adhere to your specifications. Please visit our website ...

NSK Industries, Inc. $$$

As cold forming, threading and knurling specialists since 1970, we are highly skilled at manufacturing a wide selection of cold headed parts, including carriage, hex & wheel bolts, double end studs, high performance stud pins, rivets and specialty fasteners. Check out our size and style capabilities.

B & D Cold Headed Products $$$

We are committed to customer satisfaction here at Universal Rivet Inc. 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!

Universal Rivet Inc. $$$

Blue Ridge Metals offers the very best in Wire Processing and Cold Formed products. All cold headed fasteners and components are produced and accomplished in strict conformance to the requirements of our customer specifications. Drawing on an unparalleled depth of experience, Blue Ridge Metals creates value for every customer through the fostering of teamwork and technology to better serve you.

Blue Ridge Metals Corp. $$$
Get Your Company Listed
placeholder image NSK Industries, Inc. B & D Cold Headed Products Universal Rivet Inc. Blue Ridge Metals Corp.

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.

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.

Cold Headed Parts Power Pages

Cold Heading & Cold Forming

Cold Heading & Cold Forming

Cold forming can be defined as the process of continuously forming a specific shape or design from a metal wire without adding heat. This is aided by hammers, dies, and punches at a very high speed...

Screw Machined Parts and Products

Screw Machined Parts and Products

Screw machined parts are complex pieces that are typically cylindrical and threaded and a screw machined product is a family of automatic lathes for small to medium-sized components. Screws, bolts, pins, fittings...

Types Of Bolts

Types Of Bolts

Bolts are tools used to fasten and secure the faces of assemblies using a nut. They are threaded and come with a matching nut. Their purpose is to connect aligned unthreaded holes by being placed through...

Fasteners

Fasteners

A fastener is a non-permanent or permanent mechanical tool that rigidly connects or affixes two surfaces or objects together. Non-permanent fasteners can easily be removed without damaging the joined materials...

Powder Metallurgy

Powder Metallurgy

Powder metallurgy is a manufacturing process that produces precision and highly accurate parts by pressing powdered metals and alloys into a rigid die under extreme pressure. With the development and implementation of technological advances...

Self-Drilling Screws

Self-Drilling Screws

A self-drilling screw is a type of tool that has the same design features as a drill bit or cutting tool. As the name implies, self-drilling screws do not require a pilot hole in order to perform as a fastener...

Metal Forming Services
Featured Industries