PISTON RING MANUFACTURING METHOD AND A PISTON RING MANUFACTURED BY THE SAME, CAPABLE OF REMOVING IMPURITIES IN A MANUFACTURING PROCESS

摘要

PURPOSE: A piston ring manufacturing method and a piston ring manufactured by the same are provided to manufacture the piston ring of excellent features without impurities by focusing the impurities included in a raw material to the center of a raw-material rod.;CONSTITUTION: A piston ring manufacturing method includes the following steps of: manufacturing a solid base alloy (1), in which all raw materials are mixed, by injecting the molten raw materials into a mold of a predetermined shape and cooling the same; manufacturing the molten base alloy by melting the base alloy; manufacturing a raw-material rod (2) of a rod shape by injecting the molten base alloy into a mold of a rod shape and cooling the same; manufacturing a round bar having a cross section of a ring shape by cutting the center of the raw-material rod; and manufacturing a piston ring (10) of a ring shape by cutting the round bar at a constant dimension.;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Raw material; (BB) Melting; (CC,DD) Furnace; (EE) Molten base alloy; (FF) Impurities; (GG,HH) Cooling; (II) Rod mold