INJECTION-MOLDED PRODUCT OF GRAPHITE POWDER COATED WITH METAL CAPABLE OF OBTAINING AN LED HEAT RADIATOR WHICH HAS LIGHT WEIGHT AND LOW COEFFICIENT OF THERMAL EXPANSION, A MANUFACTURING METHOD THEREOF, AND THE LED HEAT RADIATOR

摘要

PURPOSE: An injection-molded product manufacturing method of metal coated graphite powder is provided to facilitate the production of an injection-molded product with various shapes with improved thermal conductivity using metal injection molding.;CONSTITUTION: An injection-molded product manufacturing method of metal coated graphite powder includes following steps. The graphite powder is formed by coating a conductive material(S10). An injection-molded product is formed by injection-molding the coated graphite powder(S20). The injection-molded product forming process includes following steps. A molded mixture is formed by mixing the coated graphite powder and a binder(S22). The injection-molded product is formed by injection-molding the molded mixture(S24). The molded mixture is defatted(S26). The injection-molded product is sintered(S28). The injection-molded product manufacturing method of the metal coated graphite powder includes a process which rolls and extrudes the injection-molded product.;COPYRIGHT KIPO 2013;[Reference numerals] (S10) Coating graphite powder with a conductive material; (S22) Forming a molding mixture containing the coated graphite powder; (S24) Forming an injection-molded product by injecting the molding mixture; (S26) Defatting the injection-molded product; (S28) Sintering the injection-molded product; (S30) Rolling or extruding the injection-molded product