Piston for vehicle engine and method for manufacturing the same

Abstract

There is provided a method for manufacturing a piston for a vehicle engine, including: a piston assembling step of forming a piston assembly by assembling a first piston part, a bonding member and a second piston part, wherein the first piston part has two or more bonding surfaces separate from each other and extending in a circumferential direction, and the second piston part has two or more bonding surfaces separate from each other and extending in the circumferential direction; a piston diffusion brazing step of diffusion brazing the first piston part, the bonding member and the second piston part under an open atmosphere by heating the formed piston assembly; and a piston cooling step of cooling a piston unit formed by diffusion brazing the first piston part, the bonding member and the second piston part. The piston assembly includes a locking part for maintaining a position at which the first and second piston parts are assembled, and the method further includes a locking part removing step of removing the locking part from the cooled piston unit.

Dependencies are inferred from the claim text.