BILLET FOR FORGED PISTON, METHOD FOR MANUFACTURING BILLET FOR FORGED PISTON, METHOD FOR MANUFACTURING FORGED PISTON AND METHOD FOR MANUFACTURING INTERNAL-COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a billet for forged piston by which the billet excellent in a formability (forgeability) can be manufactured.;SOLUTION: The method for manufacturing the billet for forged piston includes the steps of; filtering molten aluminum alloy; pouring the filtrated molten metal into a cavity in a metallic mold; and forming a formed body by cooling the molten metal poured into the cavity from the bottom surface and the side surfaces of the cavity.;COPYRIGHT: (C)2009,JPO&INPIT