Socket Wrench and Fastening Tools
cold extrusion processing and Surface Treatment
Sleeve wrenches are the most convenient, flexible, and safe service tool for removing bolts. Buy using a socket wrench, you won’t have problems with damaged nut corners. That’s why they’re very growing popular. Sleeve wrenches are processed using hot-forged blank after mechanical processing. But the biggest disadvantage of this method is low material utilization rate and low production efficiency.
The use of cold extrusion technology instead of traditional processing technology improves production efficiency and packaging quality, saving materials and reducing costs. The process scheme of the cold extrusion socket wrench is as follows: the lower steel material - aphages softening - phosphate saponification - composite cold extrusion molding - mechanical processing two end faces - heat treatment - surface treatment.