PRODUCTION OF PISTON

摘要

PURPOSE:To produce easily a piston consisting of a composite material having high quality by using a mat obtd. by molding ceramic fibers and metallic base metal to form a rough material consisting of the composite material having a simple shape and casting a molten metal into a casting mold thereby forming the molded composite material having the prescribed shape by which an anchor effect is induced. CONSTITUTION:The ceramic fibers (including whiskers) of alumina, silicon carbide, etc. are molded to manufacture the cylindrical mat 10 having the simple shape. Said mat is installed in the casting mold and the molten metallic base material such as aluminum alloy is poured into the mold to form the part 12 consisting of the metallic base material alone. The cylindrical rough material 14 is thus obtd. A part 20 forming part of the inside circumferential surface of a combination chamber 18 and a wedge-shaped anchor part 22 are suitably worked to such material 14 to form a mold composite material 24. Such material 24 is subjected to a cleaning treatment and is installed in the casting mold for the piston. The molten metal of the metallic base material is cast therein and the casting piston 16 is manufactured.