Bucket Teeth 2014503 for EX200 6HOLES Construction Machinery Parts

The Key to Tightening the Trillion-yuan Market: A Record of Breakthroughs in China's Bottleneck Technologies for High-End Fasteners

For a long time, China's high-end fastener market has relied on imports, especially high-performance bolts in fields such as aerospace and nuclear power. In recent years, domestic enterprises have gradually broken through technological barriers through material innovation (such as titanium alloy thread forming technology) and process upgrading (such as cold heading precision processing). This article will reveal the research and development process of a domestic 12.9 grade bolt, showcasing the hard-core breakthroughs made by people from a certain country manufacturing in tiny parts.

The R&D team of a domestic 12.9 grade bolt spent three years overcoming the technical difficulties in the forming of titanium alloy threads. In traditional craftsmanship, titanium alloys are prone to sticking to molds and cracking, resulting in a yield rate of less than 60%. By introducing nano-coated molds and isothermal forging processes, the team has increased the yield rate to over 95%. In addition, this bolt is precisely processed by cold heading, with a tolerance controlled within ±0.01mm, comparable to that of international first-line brands. This breakthrough not only fills the domestic gap but also enables China's equipment manufacturing in fields such as high-speed rail and wind power to no longer be constrained by others.