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SJEC Escalator: Why do some plate pin chains have rust marks

Author:admin Time:2021-01-13 15:34:16Click:

Monarch elevator inverter

If there is rust on the surface of the plate-type pin chain, it should be taken seriously. This is not only about appearance, but also about major issues such as service life and safety. The production research of the long-term enriched plate pin chain for the permanent chain has summarized several reasons for corrosion.


1. In the process of producing plate pin chain, the company did not strictly follow the requirements for cleaning and rust prevention and oil seal anti-rust packaging for the chain parts during processing and the assembled plate pin chain finished products to prevent rust. If the chain is in contact with a corrosive liquid or gas.


2. The quality of anti-rust lubricants, kerosene and other products used by the company in production does not meet the requirements of process technology.


3. Due to the falling and falling prices of plate pin chain steel, the material of the chain steel gradually declines. For example, the content of non-metallic impurities in steel is too high (increasing sulfur content in steel makes the material's rust resistance decline), metallographic structure deviation and so on. The sources of chain steel used by current production enterprises are relatively complex, and the quality of steel is even more mixed.


4. The environmental conditions of some enterprises are poor, the content of harmful substances in the air is high, the turnover site is too small, and it is difficult to carry out effective antirust treatment. Coupled with the hot weather, production workers also violated the rust prevention regulations and other phenomena.