Analysis of the quality of fastener industrial aluminum fittings

[China Aluminum Industry Network] It is understood that there are about 40,000 varieties and millions of fasteners of various specifications in and out of China, and their use situations and environments are ever-changing. Such as: industrial profile fittings as the host, parts of the connector, with the host together with the basic performance of the main components of the basic functions of the various requirements, must adapt to high temperatures. high pressure. Low temperature. shock. Corrosion, heavy load, alternating stress, shear and anti-twist, and other occasions. However, the probability of accidents caused by fastener failure is very high, so the materials used to make fasteners must be carefully selected in advance. Many domestic fastener companies suffer from high customer claims due to product quality problems. It is true that many quality problems are caused by unqualified materials. How to correctly select fastener materials becomes one of the topics that fastener companies are increasingly concerned about. Regarding the status quo and existing problems of fastener steel in China, Shen Gong, a material consultant for Fastener Professional Association of China Machinery General Components Industry Association, stated: “Our country is currently a fastener producing country and it is also a world leader in steel production. Great powers, but the development and production of fastener steels started late.The types and specifications of cold heading steels are relatively small and cannot meet the current domestic demand for fasteners production and export demand.The production and market circulation of cold heading steel A lot of steel grades used in the JIS standards G3506, G3507, G4105 and ASTM are borrowed.