Pickling method of stainless steel covered by acid-proof cloth

• Main Authors: LIN BAICHUN, XIN BAO
• Format: Patent
• Language: Chinese; English
• Published: 06.10.2010
• Subjects: 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 MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY

The invention introduces a pickling method of stainless steel covered by acid-proof cloth; the method comprises the following steps: covering multi-layer acid-proof cloth on the surface of the stainless steel, supplying pickling solution on the surface of the acid-proof cloth and continuously updating, adding the updated original pickling solution into a solution recovery tank; ensuring that the concentration of the pickling solution is in the optimal process range through changing the concentration of the original pickling solution in the solution recovery tank and continuously updating the acid in the pickling cloth. the temperature of the pickling solution can also be ensured within the optimal process range by removing the bubbles under the cloth by the acid-proof tool and heating andcontrolling the pickling temperature to. The method can ensure the optimal pickling temperature and concentration, the pickling has good quality; the method can remove an oxidation film thoroughly without overpickling; after