Some of the combination screws we produce are not hard enough, so some of them need to be heat treated, that is, to harden the natural combination screws. This is because when the combination screw is driven into the product material, the lack of hardness of the combination screw will cause many problems. Therefore, some materials that are relatively hard must require combined screws for heat treatment. But if the screw is not heat treated, or during the heat treatment of the screw, the treatment is not good. At this time, what bad phenomena will appear, and what bad problems will appear!

If the heat treatment of the combination screw is not good, what problems will occur? Next, the editor of Dongcheng Jinjia Hardware Products, Dongguan City, will analyze the situation of the screw heat treatment of previous customers. A simple empirical analysis shows that if the heat treatment of the combined screw is not good, two situations will occur. One is the combination screw thread sliding, the other is the combination screw directly broken from the head and the thread. There are two aspects of this poor heat treatment. On the one hand, the heat treatment of the combined screw does not meet the required hardness index, and on the other hand, the hardness of the combined screw heat treatment exceeds the specified hardness index. That is, the combination screw is too hard. The combination screw is too hard and it is easy to break.

The heat treatment of the combination screw is not good. The main reason is that the heat treatment factory, which is what we often call the hardening factory, does not have a good grasp of the hardness of the hardening when the screws are hardened. And we can only measure the hardness of the screw through the instrument. Our screw manufacturers are not involved in the process of hardening screws. Therefore, it is very important to choose a heat treatment and hardening factory for screw hardening. We all choose heat treatment plants with better hardening effect.