Stainless steel screen surface cleaning, acid pickling and passivation, in addition to the maximum limit progress of stainless steel wire mesh corrosion resistance, and to avoid product contamination and beautiful effect.
In GBl50 1998 'steel pressure vessel' rules, 'there is a requirement for anti-corrosion stainless steel and appearance of the composite plate made of containers should be pickling passivation high temperature oxidation function, good low temperature function and excellent mechanical and add to r.
Therefore widely used in chemical, petroleum, power, nuclear, aerospace, Marine, pharmaceutical, light industry, textile and other parts.
Its primary intention lies in anticorrosion.
First based on the corrosion resistance of stainless steel surface passivation membrane, if the film is incomplete or flawed, stainless steel wire mesh will corrode.
General pickling passivation treatment on the project, make the corrosion potential of stainless steel to the greater.
In a stainless steel equipment and parts in the forming and assembling, welding, weld view (
Such as inspection, pressure test)
Bring appearance in the process of its construction and symbol oil dirt, rust, non-metallic, low melting point metal pollutants, paint, welding slag and splash content etc, which affect the appearance quality of stainless steel wire mesh equipment and parts, destroy the appearance of oxide film, the reduced the general corrosion resistance of steel and some corrosion resistance functions (
Pit corrosion, crevice corrosion) contains
And even lead to stress corrosion rupture.
Stainless steel wire mesh stainless steel wire mesh looks clean, pickling and passivation, in addition to the maximum limit progress corrosion resistance, and to avoid product contamination and beautiful effect.
In GBl50 1998 'steel pressure vessel' rules, there is a requirement for anti-corrosion stainless steel and appearance of the composite plate made of containers should be pickling passivation '.
This rule is for use in petroleum chemical industry, pressure vessel, because the equipment is used for direct touch with corrosive medium, start from to ensure that the corrosion resistant corrosion resistance, acid pickling passivation is necessary.
For other industrial parts, such as is not out of anticorrosive intention, only in accordance with the requirements of clean and beautiful, and choose the sentence, you don't need pickling passivation of stainless steel material.