Stainless steel screw rust and anti-loose method
After the stainless steel screws have been used for a long time, the screws will be rusted. What is the reason? How to prevent stainless steel screws from becoming loose? Let me talk about the reason for the rust of stainless steel screws and the method of preventing loosening. I hope to help everyone.
Stainless steel screw rust
1. The surface of the stainless steel screw adheres to the organic juice (such as melon, noodle soup, glutinous rice, etc.). In the case of water and oxygen, it constitutes an organic acid. For a long time, the organic acid corrodes the metal surface.
2. the attachment of dust or heterogeneous metal particles, in the humid air, the condensate of the attachment and the stainless steel screw, the two are connected into a micro-battery, causing an electrochemical reaction, the protective film is destroyed, called the electricity Chemical corrosion.
3. In polluted air (such as the atmosphere containing a large amount of sulfide, carbon oxide, nitrogen oxide), in the case of condensed water, sulfuric acid, nitric acid, acetic acid liquid point is formed, causing chemical corrosion.
4. The surface of stainless steel screws adheres to acid, alkali and salt substances (such as alkali water and stone water splashing on the wall), causing local corrosion.
Stainless steel screw anti-loose method
Simply put, stainless steel screws are used on the material of the product so that the stainless steel screws do not fall lightly. Screws are required to be more tightly connected to the product material. For stainless steel screw-proof solutions, there are two solutions:
1. Apply a layer of glue to the stainless steel screw thread, so-called dispensing. This glue is called a drop-resistant glue. This glue has good properties such as high adhesion. This glue is applied to stainless steel screws and has a strong adhesion after drying. The stainless steel screw thread can be screwed on the nut or the super-tightening effect can be produced after the threaded hole of the product is engaged. Plays a good anti-loose effect.
2. the use of special materials for resilience, such as engineering resin materials, it has a good rebound. Attach it to the stainless steel screw pattern. Mechanically rub it with the nut, or the material product. Produces vibration and resistance. Solve the problem of loose screws.
The above is about the reason for the rust of stainless steel screws and the method of anti-looseness. I hope everyone can understand the reason for the rust of stainless steel screws and the method of anti-looseness.
