Cold forming services and cold heading services put metal under pressure without the addition of heat to manufacture parts. They offer a cost-effective alternative to traditional metal working services, along with several other advantages. These include a reduction in the time needed to machine parts, the production of parts with multiple diameters, and the creation of unique and diverse shapes. Cold forming and cold heading companies can also work with extrusions, blind holes, and through holes.
Types of Cold Forming and Cold Heading Services
Cold forming and cold heading services provide a number of different capabilities and processes to their customers.
- Cold forming describes an operation using a vertical press used to manufacture bolts, rivet nuts, and other types of fasteners from metal blanks. The force from a punch and die exceeds the metal’s elastic limit, and causes the blank to take the desired shape.
- Cold heading describes an operation using a horizontal press to form metal by placing it under pressure without the addition of heat. This includes upsetting and extrusion and is often performed along with other cold forming operations, such as sizing, piercing, trimming, thread rolling, blank rolling and pointing.
- Cold drawing forms metal by drawing or pulling metal from a die or gap in order to produce wires and elongated profiles.
- Cold rolling creates metal shapes with uniform cross-sections. Sheets, strips, coils, wires, or foils are fed between successive pairs of rollers that progressively bend and form the metal until the desired shape and cross-section is obtained.
- Impact extrusion produces components by using a die and high-impact pressure.
- Orbital forming is an operation where pressure is applied using an orbital rotating tool head held at a finite angle to the work piece in order to produce a smooth finish.
- Radial forming is an operation where material is displaced uniformly at a controlled speed as to produce uniform and consistent material displacement.
- Thread rolling produces external threads on parts by the use of a threaded-die held, rotating work piece, and controlled pressure gradients.
Advances in Cold Forming and Cold Heading
As cold heading and cold forming machinery continues to advance, providers of cold forming and cold heading services are increasingly able to manufacture components that range from sparks plugs and axles to complex parts that could previously only be made with machining technology. As metallurgical knowledge increases, cold forming and cold heading services will also be possible with tougher materials and alloys.