发明申请
US20160199951A1 PISTON ROD MANUFACTURING METHOD 有权
活塞杆制造方法

PISTON ROD MANUFACTURING METHOD
摘要:
A piston rod manufacturing method of manufacturing a piston rod by joining a solid rod main body and a solid rod head includes a first step of joining respective end surfaces of the rod main body and the rod head by friction welding; and a second step of performing boring process on an axial center portion from the rod head side so as to penetrate through a joining face between the rod main body and the rod head.
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