Maijin is specialized in all various custom-made CNC machining parts and CNC milling parts as well as non standard fasteners.
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Maijin is specialized in all various custom-made CNC machining parts and CNC milling parts as well as non standard fasteners.
High-strength nuts are made of high-quality carbon steel. In order to better facilitate identification, there are convex marks on the top surface of the top of the high-strength bolt head, as well as the manufacturer's mark. At present, the high-strength nuts currently on the market are made of No. 45 or No. 35 high-quality carbon steel. The former one is formed by hot heading process, and the latter one can be formed by cold heading process. The production process of high-strength nuts includes processes such as flow, forming, heat treatment, tapping, and blackening. When the high-strength nut project is accepted, in addition to the specifications and surface smoothness of all parts should meet the requirements of the national standard, it is also necessary to carry out the load test and hardness test for the finished product. The matching high-toughness gasket is made of No. 45 high-quality carbon hot-rolled strip steel by stamping. The hole and steep slope are formed at one time, followed by heat treatment and blackening. Before heat treatment, put the gasket into the drum, and rotate the drum to make the burrs and burrs of the gasket collide with each other and wear off. During the engineering acceptance of high-strength nut products, except that the size meets the national standard, only the surface hardness test is done. Four points are measured randomly, and the average value of the last three points is taken. The surface hardness should be HRC36-45. The 45° steep slope rounding of the nominal diameter of the gasket is very important. If the specifications do not meet the requirements, the bolts of the foundation will not fall completely during assembly, or the support surface of the top of the bolt head of the foundation will not be closely attached to the surface of the gasket, which will affect the assembly quality.
We have achieved the stable sales record at the forefront of our industry in providing high quality products and services to our customers.
CONTACT DETAILS
Tel / Whatsapp: +8613632562601
Email: mj@chinamaijin.com
10F, 9 Building Block B, Bao Neng Science and Technology Park, NO.1 Qing Xiang Rd, Long Hua District, Shen Zhen City, China.
