1. Cold heading is carried out under normal temperature. Cold heading can improve the mechanical properties of metal parts.
2. Cold heading process can improve material utilization. Taking the cold heading bolt as an example, the material utilization rate of the new process "concave" hexagon head bolt can reach more than 99%. In addition to the loss of "head and tail", it has achieved completely no cutting processing. If cutting is used, the material utilization rate is only 40%. The material utilization rate of cold heading nuts can also reach about 80%, while that of cutting nuts is only 54%.
3. Cold heading process can greatly improve productivity. For example, compared with the original cutting process, the productivity of cold heading nuts is increased by about 25 ~ 30 times.
4. Due to the use of multi station cold heading machine, all processes are processed on one machine tool at the same time, thus reducing equipment investment, reducing the production site occupied by the equipment, reducing the transportation of semi-finished products between various processes, especially reducing the labor intensity of workers and improving labor conditions.
5. Cold heading process can improve the surface finish of products and ensure the accuracy of products. The general finish can reach V5, and the special requirements can reach V6. For mass production of bolts and nuts, its accuracy can be guaranteed. Cold heading technology is more and more widely used in mechanical manufacturing, especially in the production of standard fasteners, because it has high productivity, good product quality, greatly reduces material consumption, reduces production costs, and improves labor conditions. Among them, the most representative products produced by multi station cold heading machines are bolts, screws, and nuts.
