Address: No. 1350, Binhai 12th Road, Longwan District, Wenzhou City
High-strength threaded fastener product flow
The process of producing high-strength threaded fasteners is raw material reforming → cold head forming → thread processing (rolling or twisting) → heat treatment → surface treatment → sorting and packaging, and the rolling process of heat treatment is generally adopted above 10.9.
Automotive fastener materials
The steel grades commonly used for high-strength bolts are 35 steel, 45 steel and ML35 steel for bolts of 8.8 grades; 35CrMo; 40Cr for bolts of 10.9 grade; 35CrMo, 42CrMo and SCM435 for bolts of grade 12.9.
The raw materials for domestic fasteners are basically hot-rolled, while the steels for fasteners produced in Japan and other countries are basically directly cold-pressed, and users do not need to pre-treat, which can reduce costs from the link.
Common failure modes for fastener failure are assembly elongation, fatigue fracture, and delayed fracture.
Wenzhou Keteng Fastener Co., Ltd. Michuan provides website construction 浙ICP備16039718號
Technical support: Michuan Technology