Pickling and passivating method of ferrite stainless steel components

The invention provides a pickling and passivating method of ferrite stainless steel components. The pickling and passivating method comprises following steps: firstly, attachments and oil stain on the surfaces of the ferrite stainless steel components are removed, and the ferrite stainless steel com...

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Bibliographische Detailangaben
Hauptverfasser:	CHEN WEI, CAI ZIPING
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	The invention provides a pickling and passivating method of ferrite stainless steel components. The pickling and passivating method comprises following steps: firstly, attachments and oil stain on the surfaces of the ferrite stainless steel components are removed, and the ferrite stainless steel components are washed with water until surface pH value is 7; the surfaces of the ferrite stainless steel components are coated with a pickling passivation paste for pickling and passivating; and after pickling and passivating, the ferrite stainless steel components are washed with water until surface pH value is 7. The pickling and passivating method can be effectively used for pickling and passivating of ferrite stainless steel components, especially large ferrite stainless steel components. Corrosion resistance of the ferrite stainless steel components processed via the pickling and passivating method is improved greatly; appearance quality is improved greatly; and service life is prolonged greatly.