Cold extrusion steel belongs to cold processing technology of steel. The working principle of cold extrusion technology is to place the preformed material into a cold chamber, die or container and use a punch to press it into the desired shape after adding pressure. During the cold extrusion process, the plastic deformation of the material makes the density of the material structure greatly increased inside, changing the microstructure of material; the shear effect of material surface makes the precipitation of alloy elements in the surface and the compaction of internal structure start, which greatly reduces alloy element enrichment on the surface of the material and also reduces oxidation risk.
Cold extrusion steel is suited to the production of threaded parts, seats, pins, bushes, gears and other parts whose shape is complex and difficult to make by cutting and whose material hardness is low. Cold extrusion steel can improve the surface roughness and steel properties. The cold extrusion process can manufacture steel parts with complex shapes and fine surface finishes, reducing both mechanical processing capacity and the risk of machining defects.
Cold extrusion steel has the following advantages:
1. It has the characteristics of large deformation capacity, high forming speed and low energy consumption.
2. It has a wide range of materials; different material grades can be selected for different products.
3. Intelligent production technology of cold extrusion steel, precise control of parameters, can achieve higher tolerances, stable quality, and efficiency of production and processing.
4. Cold extrusion steel can use precise control of process parameters, reduce machining time and waste, thus achieve a better balance between production and processing costs.
5. The cold extrusion process can reduce material waste, higher processing efficiency and avoid unnecessary surface oxidation caused by machining.
6. Cold extrusion technology can achieve the production of high-precision microstructures with narrow tolerance, thus improving the performance of steel material.
Cold extrusion steel is suitable for processing parts with special functions, complex shapes and surface finish, such as gears and sleeve parts and other irregular shapes. At the same time, cold extrusion steel is also suitable for large-scale production of parts, that is, batch production, which can reduce the production cost and the cost of product quality control.
With the development of modern industry, cold extrusion steel has become an important technology in the steel processing industry, and its application scope is also increasing. Cold extrusion steel parts have the characteristics of economic cost and wide application, so they have a certain market development prospect. In the future, with more and more application of cold extrusion steel, its application field will become wider and wider.
