1. Extruded parts size accurate surface smooth: the current development of China's cold extrusion parts of the general size of the accuracy of up to 8 to 9, if the ideal lubrication, the accuracy after the polished surface. So the cold extrusion method to create the parts, generally do not need to re-processing, a small amount of only finishing (grinding).
2. Save raw materials: cold extrusion material utilization rate can usually reach more than 80%. Such as Jiesuo brand car piston cutting processing material utilization rate of 43.3%, while the use of cold extrusion material utilization rate increased to 92%; and if the universal joint bearing sets to use cold extrusion, the material utilization from the past 27.8% to 64%. It can be seen that the use of cold extrusion method to produce mechanical parts, can save a lot of steel and non-ferrous metal materials.
3. High productivity: the efficiency of the production of mechanical parts with cold extrusion is very high, especially the production of large quantities of parts, with cold extrusion method to produce comparable cutting several times, several times, or even hundreds of times. For example, the car piston pin with cold extrusion method than cutting with manufacturing to improve 3.2 times, and now with cold extrusion piston pin automatic machine, so that productivity is further improved. The productivity of a cold extrusion robot is equivalent to the productivity of 100 ordinary lathes or 10 four-axis automatic lathes.
