When Bolt Factory is producing combination screws, it is inevitable that the threads will be damaged or rotten, which will greatly reduce the product qualification rate and reduce production efficiency, resulting in high production costs. For manufacturers, it is necessary to find out the reasons for thread damage or rotten teeth, and try to reduce damage or Bluetooth.

　　 There are seven reasons for the damage or rotten teeth of the combined screw thread. Let’s take a look at it together:

　　The first reason: the taps are not carefully selected. When the manufacturer is producing, the selected tap needs to be combined with the thread standard, aperture size, material used, and thread accuracy tolerance. If the quality of the tap is not good or it does not match the screw itself, the thread is prone to damage or rotten teeth.

　　 The second reason: When tapping, the thread is damaged or rotten due to the high speed and temperature of the tapping. In order to improve this situation, you can reduce the speed of the equipment and provide suitable cooling water.

The third reason: after finishing tapping, there are turning burrs inside the thread. In order to reduce the occurrence of burrs during turning, the taps can be replaced regularly. After all, the service life of the taps is also limited. When its performance decreases, The quality of the processed combined bolts will also decrease.

　　Fourth reason: effective debris or impurities remain in the thread during tapping, which requires attention to be cleaned during later cleaning.

　　 Fifth reason: When tapping, the rotation stability is poor. Nowadays, most of the tapping equipment is fully automated. In order to ensure the stability of the equipment operation, this requires professional technicians to improve the tapping procedure.

　　 In addition, when processing China Nut, the tapping axial pressure used is too large, which will also cause the thread to be damaged or rotten. In this case, the pressure needs to be adjusted.