The passivation process of stainless steel includes oil degreasing, activation, passivation, neutralization and over-pure water. Passivation is caused by the reaction between the metal and the oxidizing medium to form a thin, dense passivation film on the surface of the metal. This passivation film exists independently and is usually a compound of oxygen and metal. The passivation film acts as a complete separation between the metal and the corrosive medium.
Passivation process is the use of immersion method is the outer layer of stainless steel to produce a microchemical reaction, generating a layer of rigorous film, it can make the stainless steel outer layer of rust and corrosion resistance to improve, now the application of stainless steel materials is not widely foreign, but the interface treatment process is very mature.
Second, what are the advantages of stainless steel passivation treatment
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1, after passivation treatment of stainless steel salt spray detection, can increase 5 to 20 times.
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2. Stainless steel processed by passivation can be used repeatedly, thus reducing construction costs.
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3, passivated stainless steel, no need to change the color and size of the parts.
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4, passivated stainless steel, in line with the national standard blue dot method test, that is, more than 35 seconds will not have blue dots appear.