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Stainless steel screws rust causes

2021-10-26

Information Summary:

First of all, what is the definition of the rotary axis: refers to the link product parts of the main parts must be used for the rotation of the work of both the bending moment and torque of the shaft is called the rotary axis.

1, Dust or foreign metal particles of adhesion, in the humid air, adhesion and stainless steel screws condensation, will be connected to a micro-battery, triggered by an electrochemical reaction, the protective film is damaged, known as electrochemical corrosion.
2, Stainless steel screw surface adhesion of organic sap (such as vegetables, noodle soup, phlegm, etc.), in the presence of water and oxygen, constituting organic acid, long time organic acid corrosion of metal surfaces.
3, Stainless steel surface adhesion containing acid, alkali, salt substances (such as alkali water, lime splash decoration wall), causing localized corrosion.
4, In the polluted air (such as containing a large number of sulfides, carbon oxides, nitrogen oxides in the atmosphere), meet condensation, the formation of sulfuric acid, nitric acid, acetic acid liquid point, causing chemical corrosion.
All of the above can cause the destruction of the surface protective film of stainless steel screws to cause corrosion. Therefore, in order to ensure that the surface of stainless steel screws bright, not to be corroded. We have to do in its surface cleaning, passivation and other treatments.