METHOD FOR PRODUCING PLATED BLACK-CORE MALLEABLE CAST IRON MEMBER, AND PLATED BLACK-CORE MALLEABLE CAST IRON MEMBER

• Main Authors: GOTO RYO, SAWADA AKINORI, FUKAYA TAKAYUKI, MATSUI HIROSHI
• Format: Patent
• Language: Chinese; English
• Published: 12.11.2021
• Subjects: ALLOYS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; 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; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TREATMENT OF ALLOYS OR NON-FERROUS METALS

This method for producing a plated black-core malleable cast iron member having a plating layer formed on the surface thereof, includes: a step for performing graphitization in a non-oxidizing and decarburizing atmosphere; a step for subjecting the surface of the black-core malleable cast iron member after graphitization, to particle projection treatment so that silicon oxide remains on the surface; a step for immersing the black-core malleable cast iron member after the particle projection treatment, in a flux for at least 3.0 minutes; and a step for performing hot-dip plating the heated black-core malleable cast iron member after the flux immersion. 本发明提供一种经镀覆形成的黑心可锻铸铁部件的制造方法，上述经镀覆形成的黑心可锻铸铁部件在黑心可锻铸铁部件的表面形成有镀覆层，上述制造方法具有以下工序：在非氧化性且脱碳性的气氛下进行石墨化的工序；对石墨化后的黑心可锻铸铁部件的表面，以使硅氧化物残留在该表面的方式进行粒子投射处理的工序；将上述粒子投射处理后的黑心可锻铸铁部件在焊剂中浸渍3.0分钟以上的工序；以及对上述焊剂浸渍后的黑心可锻铸铁部件实施热浸镀的工序。