304 material rust phenomenon causes

304 material rust phenomenon causes:

1. There are chloride ions in the use environment. For example, the environment we live in contains a lot of chloride ions. For example, there are chloride ions in the water pipe, and it is impossible for us to boil the water and volatilize the chlorine gas, so it is easy to cause the pipe to be polluted and rusty.

2. the air humidity is too large the air is too humid will also cause the surface of the material to be corroded and produce moss.

3. the oxygen content in the air is too high because the air contains oxygen, which will also lead to corrosion of the material.

4. the water contains too much calcium and magnesium ions in some areas due to water quality problems, there will be more calcium and magnesium ions in the water precipitate attached to the surface of the material, resulting in material discoloration.

5. the use of metal products are not well maintained if the use of a long time without regular maintenance of the product, then the corrosion resistance of the product will be greatly reduced.

6. improper storage If you do not pay attention to the process of storage, it is also easy to make the product corroded and lead to rust.

7. during the use of the impact or scratch.

8. the use of poor quality welding rods or unqualified welders.

9. welding temperature is too low.

10. The purity of the protective gas used is not high.

11. the operator's technology is not up to standard.

12. the environment has strong acidic substances.

13. Long-term exposure to seawater.