Advantages of thick-wall seamless tube cold extrusion technology are as follows:
1. Extrusion parts accurate size and smooth surface: At present, China's development of cold extrusion general dimensional accuracy of up to 8 to 9, if the ideal lubrication, precision second only to the fine polished surface. Therefore, the parts produced by cold extrusion generally do not need to be processed, only a small amount of finishing (grinding).
2. To save raw materials: cold extrusion material utilization can usually reach more than 80%. Such as the liberation of the car piston cutting material utilization rate of 43.3%, while the use of cold extrusion material utilization increased to 92%; Another example of universal joint bearing sleeve to cold extrusion, the material utilization from the past 27.8% to 64%. It can be seen that the use of cold extrusion machinery parts production, you can save a lot of steel and nonferrous metal materials.
3. High productivity: the efficiency of cold extrusion production of mechanical parts is very high, especially the production of large quantities of parts, with cold extrusion method to increase than the cutting several times, several times, or even hundreds of times. For example, the automotive piston pin with cold extrusion method than the use of cutting manufacturing increased by 3.2 times, and now with cold extrusion piston pin automaton, to further improve productivity. The productivity of a cold extrusion robot is equivalent to the productivity of 100 general lathes or 10 4-axis automatic lathes.
