公开(公告)号：US3596571A

公开(公告)日：1971-08-03

申请号：US3596571D

申请日：1969-07-07

Applicant: WELLWORTHY LTD

Inventor： HILL HAROLD T ,  ROBSON JOHN ,  DAY ROGER A

IPC: B23K20/12 ,  B23P15/10 ,  F16J1/00 ,  F02F7/00 ,  F16J1/04

CPC classification number: B23P15/10 ,  B23K20/129 ,  F02F2200/04 ,  F05C2201/021 ,  F05C2201/0448 ,  F05C2251/042 ,  F16J1/001

Abstract: This invention relates to a piston for an internal combustion engine, compressor or the like, which is composed of at least two mating parts, for example a light alloy piston body part and a wear-resistant ring groove carrier part or heat-resistant crown part, the parts being permanently assembled together by friction welding. The invention also relates to a method of making such pistons.