Usually a method of cleaning a metal surface.
Generally, the product is immersed in an aqueous solution of sulfuric acid to remove the oxide film on the metal surface.
It is the pretreatment or intermediate treatment of electroplating, enamel, rolling and other processes.
There are three methods:
The method of using acid solution to remove the oxide and rust on the surface of steel is called pickling.
(ii) in order to eliminate the diatomite carrier surface adsorption, reduce the chromatographic peak trailing, the carrier before the use of acid or alkali washing treatment.
The commonly used acids for pickling are hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid and hydrofluoric acid.
Pickling corrosion inhibitor must be added to prevent acid corrosion of metal.
Pickling processes are mainly dip pickling, spray pickling and paste derusting.
Generally, pickling method is used, and spray method can be used in mass production.
After cleaning the metal surface into silver white, while the passivation of the surface, improve the corrosion resistance of stainless steel.
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Post time: Dec-09-2019