Composite molded body of metal member and molded resin member, and surface processing method of metal member

• Main Authors: SUTOU, MITSURU, HOSOGAYA, TAKASHI, ONOSE, SHIN
• Format: Patent
• Language: English; French; German
• Published: 03.04.2013
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMICAL SURFACE TREATMENT; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; 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; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SOLDERING OR UNSOLDERING; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; WELDING; WORKING BY LASER BEAM; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Crater-like intricate indents (22) formed by melting and scattering of a metal surface are provided by irradiating with high density energy such as a laser beam (9) or an electron beam the surface (101) of the metal member. By using the irradiation condition that the crater-like indents (22) have partially overlapped regions (23), gangue-like prominent portions (11) formed by melting and scattering of the metal surface (101), a spherical metal splash formed at the top end of the prominent portions (11), and a roughed surface shape where particulate sputtering formed upon fabrication is secured. Thus, the molded resin intrudes into the constricted space formed by surface roughening to provide an anchoring effect against volume change of the resin in the direction where the resin is peeled from the surface of the metal member.