Surface treatment of stainless steel

Company industry

Pickling technology

The method of using acid solution to remove the oxide scale and rust from the surface of steel is called pickling. It is a method of cleaning metal surfaces. It is usually carried out together with pre-passivating treatment. The acid used for pickling is sulfuric acid, hydrochloric acid, phosphoric acid, nitric acid, chromic acid, hydrofluoric acid and mixed acid. Sulfuric and hydrochloric acids are commonly used.

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Passivation technology

After the treatment of oxidizing medium, its corrosion rate than before the original treatment has a significant decline in the phenomenon called the metal passivation. The passivation mechanism can be explained by the thin film theory, that is, the passivation is due to the interaction between the metal and the oxidizing medium, and a very thin, dense, well-covered passivation film can be strongly attached to the metal surface during the action.

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Electrolytic polishing technique

Electrochemical polishing is also called electric polishing, electrochemical polishing or anodic polishing. A method of anodizing metal parts by electrolysis to improve their surface finish.

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Oil removal technology

The commonly used oil removal methods are: solvent oil removal, electrochemical oil removal, chemical oil removal and surfactant oil removal and manual oil removal and mechanical oil removal. Different oil removal methods have different oil removal characteristics.

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Descaling technology

A class of chemicals added to various media, such as water, oil, or grease, for the purpose of preventing metal from rusting. At present, it is customary to divide water-soluble rust inhibitor, oil-soluble rust inhibitor, emulsified rust inhibitor and gas phase rust inhibitor, etc.

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Company industry: Surface treatment of stainless steel; Copper surface treatment; Aluminum surface treatment

Industry application: Medical apparatus and instruments; Household industry; Food machinery; Nuclear applications; Cutting tool used

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Contact person：Zhang Lu

Contact number：15817781550

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Telephone：0769-8763 3321 / 0769-8763 3525

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