We see screw fasteners in all products. Most of the screw fasteners are head-shaped, the threads are even and burr-free, and the appearance is bright, but are all the screw fasteners like this? Of course not. When the screw fasteners are manufactured, the technology is not closed or the machine is not adjusted, it will cause many surface defects. The most common surface defects of the screw fasteners are as follows:
1. The screw fasteners are eccentric. This kind of mistake is usually caused by the problem of the two-flush installation or the adjustment of the screw production machine.
2. The phenomenon of hoes and hoes often occurs. This kind of problem is the biggest headache for screw technicians. It is mainly caused by mistakes in the adjustment of the machine and the failure of the screw fasteners caused by a mistake in the installation.
3. The head is not round, the main reason for the roundness of the head is that the grinding has a problem. The quality of the material of the punching tool is not good. After the grinding of some screws, the grinding tool causes wear and tear, resulting in the head being out of round. occur.
4. Cracks, double layers, the majority of the reason is that the work did not work when forming. The second step is that there is a problem in the process of forming a tooth.
Mainly manifested as phenomenon one, cracks in processing, in addition to the problem of adjustment, there are problems with the dental plate, phenomenon two, when the fire is burning, the spacing is too large, the time is not well mastered, phenomenon three. The tail is either broken or the tail is too tight, or the machine is too loose. This kind of operation is problematic and it is easy to cause surface defects of the screw fastener. Phenomenon 4: The mast or the bottom of the tooth is rough. This requires a look at whether the distance of the dental plate is not adjusted or corrected.
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