Seven coups teach you to solve the problem of stainless steel screw lock
When we installed stainless steel screws, we often heard that stainless steel screws were locked. After the stainless steel screw is locked, it is difficult to remove it. Even if it is taken down, the thread is already worn out very badly and cannot be used again. Is there any good way to avoid the stainless steel screw locking? Today we start from several aspects, in-depth discussion of the reasons for stainless steel screw lock, in order to find a better solution to extend the service life of stainless steel screws.
Why are stainless steel screws tightened and locked?
The stainless steel screw bite is a bit like cold welding. When the fastener assembly is locked, the speed and friction will produce an instant high temperature. The high temperature will cause the metal to fuse and cause sticking. Moreover, the thermal conductivity of stainless steel is very poor. When the temperature is too cold or too hot, the bolt will be deformed due to its own expansion or contraction. When the surface of the stainless steel screw is damaged, an oxide film layer will be formed to prevent further corrosion. When the fastener is tightened, the pressure on the surface of the contacted thread will damage the oxide film, and the metal contact point that loses the oxide film will peel off and will bite each other, so it is easy to lock.
What are the methods to prevent stainless steel screws from locking or seizing?
(1) Selection of stainless steel screw products
1 To select stainless steel screw products whose mechanical properties meet the needs of use, the specifications and performance are not equal, and wear is inevitable when used.
2 The length of the bolt should be selected properly to tighten the nut and expose the nut 1-2 teeth.
3 Remember to check if there are any toothaches on the stainless steel screws before buying, see if the threads are rough, and there are no debris between the threads.
(2) Operation method
1 Check the stainless steel screw thread for dirt before use, remember to clean it.
2 When installing stainless steel screws, it can be properly lubricated to reduce the friction.
3 Learn to use the gasket reasonably to prevent the problem of too tight locking.
4 When screwing in the stainless steel screw, it is necessary to have a good angle and cannot be used too hard.
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