Process for production of aluminum wheel

• Main Authors: SATO HIROYUKI, YAMADA TAKESHI, NOMOTO SOICHI, FUJII YOSHITOMO
• Format: Patent
• Language: Chinese; English
• Published: 27.07.2011
• 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; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25; NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE

The present invention provides a process for production of an aluminum wheel, which makes it possible, even when non-chromate surface treatment is conducted after casting, to attain sufficient tight adhesion between an aluminum wheel and a non-chromate coating and sufficient corrosion resistance. A process for production of an aluminum wheel, is characterized by comprising the cleaning step of etching the surface of an aluminum wheel chemically with an alkaline cleaning fluid containing an alkaline builder, an organic builder and a chelating agent until the atomic ratio of metallic Si to oxide Si on the surface of the aluminum wheel becomes 0.01 to 9. In cleaning the surface of an aluminum wheel, the process can dispense with shot blasting.