Stainless steel screw is used in our daily life very large, but the common problems and solutions in the daily use process are not well known, such as the common problems of loosening, rust, fracture, etc. Once these problems occur, small screw replacement will cause destructive damage to equipment components, so how to avoid these problems, the following letter is pure solid. For you to list these common problems and their prevention methods.
1. Anti-loosening of stainless steel screw:
Simply speaking, it is to make stainless steel screw used in product materials, so that stainless steel screw will not slightly fall off. Screws need to be more tightly connected to the product material. For the anti-loosening solution of stainless steel screw, there are two solutions as follows:
1. The anti-elasticity of special materials, such as engineering resin materials, has better anti-elasticity. Attach it to the thread of stainless steel screw. Make it mechanical friction with nuts or material products. It produces vibration and absolute resistance. Solve the problem of screw loosening completely.
2. Coat a layer of glue on the thread of stainless steel screw teeth, so-called dispensing. This kind of glue is called drop resistant glue. This kind of adhesive has good properties such as high stickiness, non-toxicity and so on. This kind of glue is coated on stainless steel screw, after drying, the adhesion force is super strong. It can make stainless steel screw thread combine with nut thread or produce super-factor fastening effect after product thread hole joint. Play a super anti-loosening role.
2. Rust of stainless steel screw
1. Attachments of dust or heterogeneous metal particles, in moist air, attachments and condensed water of stainless steel screw, connect them into a micro-battery, which triggers electrochemical reaction and destroys the protective film, which is called electrochemical corrosion.
2. The surface of stainless steel screw is adhered with organic juice (such as melon, vegetable, noodle soup, phlegm, etc.). Under the condition of water and oxygen, organic acid is formed, and for a long time, organic acid corrodes the metal surface.
3. The adherence of stainless steel screw surface contains acid, alkali and salt substances (such as alkali water and lime water splashing on decoration wall), which causes local corrosion.
4. In polluted air (such as atmosphere containing large amounts of sulfide, carbon dioxide and nitric oxide), sulfuric acid, nitric acid and acetic acid are formed in the presence of condensate, which leads to chemical corrosion.
The above conditions can cause the destruction of the protective film on the surface of stainless steel screw and lead to corrosion. Therefore, in order to ensure that the surface of stainless steel screw is permanently bright and not rusted. We have to clean its surface. Passivation and other treatment.
Xinchun Fastener reminds us that when using stainless steel screw in our daily work and life, we must pay attention to the above four points to prevent stainless steel screw from rusting.
3. Fracture of stainless steel screw:
But generally speaking, stainless steel screw is seldom broken. Because the stainless steel screw wire itself is harder. But under certain circumstances, stainless steel screw will break. So what are the main reasons for the breakage of stainless steel screw?
The reasons for the breakage of stainless steel screw are as follows:
1. The quality of raw materials used for stainless steel screw is poor. There are many impurities, impurities, resulting in the hardness of stainless steel screw is not enough.
2. Production process of stainless steel screw. For example, the eccentric stainless steel screw, as well as the production of down-punching operation when Q value is too deep and R bit design is too small.
3. When customers use stainless steel screw, they exert too much force. It is generally recommended to do torsion test on stainless steel screw to see how much the minimum breaking force is, and then adjust the corresponding torsion.
The above three reasons are the main reasons for the breakage of stainless steel screw. The problem of screw breaking is various. If none of the above is the cause of breaking, it should be checked step by step to find out the final cause.
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