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Surface treatment technology of common stainless steel

  • Author:E-BON
  • Source:E-BON
  • Release on:2018-02-05
1. surface whitening treatment:
During the processing of stainless steel, the black oxide skin is produced by rolling plate, ligation, welding or heat treatment by artificial surface fire. The hard black oxide is mainly two components of EO4 NiCr2O4 and NiF, before using hydrofluoric acid and nitric acid corrosion removal method. But this method is costly, pollutes the environment, is harmful to the human body, is corrosive, and is gradually eliminated.

There are two main methods for the treatment of oxide skin at present.
The blasting (pill) method: mainly uses the small glass beads method, remove surface oxide black.

The chemical method: liquid with inorganic additives using a pollution-free pickling passivation cream and non-toxic cleaning solution at room temperature. Thus the purpose of whitening treatment for stainless steel is achieved. After the treatment, it is basically a light color. This method is more suitable for large and complex products.

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