Causes of stainless steel screw breakage and hazards of non-standard screw breakage
Normally, stainless steel screws are not easy to break during normal use. However, under special circumstances, stainless steel screws may break. So, why do stainless steel screws break? What is the real cause of stainless steel screws breaking?
1. The raw materials used for stainless steel screws are of poor quality, and the wires contain many impurities and are impure, resulting in insufficient hardness of the screws.
2. Apply too much force when using stainless steel screws. A torque test should be performed to determine the appropriate breaking force and adjust the torque. If higher torque requirements are required, the screws should be heat treated.
3. Process problems during the production process, such as improper eccentric head design, too deep Q value, too small R position design during down punching operation, etc.
4. Is the pre-drilling hole appropriate? If the pre-drilling hole is too small, the screw will easily break.
We should be familiar with non-standard screws. They are mainly used for connection and fixation. They are widely used and play an important role. Some people may think that non-standard screws are not very useful, but have we ever heard of a saying: "To make a useful screw, it needs to appear where it is needed."
Don't underestimate any small non-standard screw, because it is likely to become the culprit of the accident.
In fact, non-standard screw breakage is mostly caused by looseness. Because the situation of screw loosening and fracture is very similar to fatigue fracture, it is often mistaken for a fatigue strength problem. In fact, fatigue strength usually far exceeds our usage needs.
The problem of non-standard screw breakage is generally considered to be insufficient strength, so the method of increasing the bolt diameter is often used to improve strength. This can increase the pretightening force and friction of non-standard screws, thereby improving the anti-loosening effect. However, this method is not a professional solution, with high investment and small returns.
