Frequently Asked Questions About The Quality Of Screws

The screws produced, because of which production aspect is unreasonable, may lead to quality problems of the screws. During production, many screw quality problems may be found during delivery. Let's talk about the quality problems that screws often encounter and the reasons for the quality problems.

1. The screw head is deformed and the head is crooked. The possible reason is that the first punching device of the screw mold is not good and the machine is not adjusted properly.

2. The head of the screw is not round. The reason is that the selection of the first punch of the screw mold is improper or the punching is not full enough.

3. The screws have burrs or burrs. The reason is that the first punch is not well formed, mainly caused by the excessive gap between the punch and the die hole or the punch is too short.

4. The screw head is cracked, and the screw head is cracked. The reason may be that there is a problem with the quality of the screw wire itself, so before the screw wire is headed, the quality department must check it and use the potion.

Although the screws have been used for a long time, and generally know how to make them, the standards and requirements stipulated by each standard may not be very clear. Here, we only use the collected standards to sort out a suitable for our reading, so that we can correct There are many layers of knowledge about screws.

A screw is a kind of threaded fastener that is self-drilled in the pre-drilled hole of metal or non-metal material to match the female thread. It has the characteristics of high tensile force, one piece and one side combination. Because it forms or taps its mating thread by itself, it has high anti-loosening ability in combination and can be loaded and unloaded. On small screws, its size, thread type, head type, and tapping performance are almost unlimited in engineering applications.