The Solution To The Quality Problems Of Bolt Factory Products

Posted by abyihui on October 10th, 2019

Many high-strength Bolt Factory encounter the problem of quality defects in the production process. What caused this situation? Next, we will take everyone to analyze the relevant content.

1Because of raw materials such as impurities, fine folding cracks and other defects, and the processing technology is not reasonable (such as eliminating the spheroidizing annealing or spheroidizing annealing process parameters are not correct, etc.), resulting in serious cold work hardening, resulting in bolt head Cracking defects of equal quality.

2 The head forming process parameters are unreasonable, and the metal fibers of the head are excessively folded or even broken during the processing of the product, and stress concentration occurs. In severe cases, the quality of bolts is turned off.

3 Because of the unreasonable process parameters of the bolt, the metal fiber is over-folded during the forming process of the head, and even the fracture and the heat treatment process are unreasonable, resulting in quenching cracking during high-strength bolt quenching and tempering.