Method for reducing surface roughness of aluminum workpiece before anodic oxidation

• Main Authors: EBISU JIALIANG, HE QIAO
• Format: Patent
• Language: Chinese; English
• Published: 16.04.2024
• Subjects: APPARATUS THEREFOR; 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; DRESSING OR CONDITIONING OF ABRADING SURFACES; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS; GRINDING; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; METALLURGY; PERFORMING OPERATIONS; POLISHING; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS; TRANSPORTING

The invention discloses a method for reducing the surface roughness of an aluminum workpiece before anodic oxidation. The method comprises the following steps: step 1, degreasing; step 2, soaking with pure water; step 3, blow-drying; step 4, abrasive paper grinding; step 5, chemical accurate grinding; step 6, soaking with pure water; step 7, blow-drying; step 8, carrying out glare flashlight inspection; step 9, roughness measurement: measuring the surface roughness of the product, and if Ra is greater than 0.2 [mu] m, returning to the step 4 until Ra is less than 0.2 [mu] m; step 10, hanging an anode; the whole complete process of degreasing, rough grinding, chemical accurate grinding, strong light inspection and roughness measurement is adopted for cleaning detection, chemical and physical modes are utilized, dry grinding and wet grinding are combined, the roughness of the product can be effectively reduced before anodic oxidation, the roughness required by anodic oxidation is 100% reached, and the product q