How To Prevent Self -attack Screws From Being Bent Hard?

For those who often use self -attack screws, it is obvious that self -attack screws must be treated with heat, which is what we usually call hardening. Because of self -attack screws or screws, it is used to punch and attack to achieve close connection. This requires the self -attack screw itself to have a strong hardness so that it can play a role.
The newly produced self -attack screw, the self -attack screw itself is not hard enough, and cannot meet the customer's requirements. At this time, we need to heat the screw, that is, hardening screws. At that time, we often didn't pay attention.
In the process of hardening, some attack screws will bend, especially the appearance of long screws is even more obvious. So, in this case, what should we pay attention to? How can we make this preparation better and reduce screw damage?
Thermal treatment causes the attack wire screw to bend, which is often caused by the stacking problem of heating attack screws. The area of the long screw is very large, and some screws are not uniform due to the stacking stack, resulting in bending. Of course, in addition to this reason, there are many factors that determine this.
For example, the furnace temperature rises is too fast and the quenching temperature is too high. It is a variable bending factor. The critical point of the material when the temperature of the heating furnace is too high, and it is easy to deform.
Therefore, whether it is a hard plant or consumers, we should understand that the self -attack screws should pay attention to the above points during the heat treatment sclerosis process to prevent defective products or damaged screws.