Title:
FLANGE SEALING SURFACE FORMING METHOD FOR ALUMINUM CASTING STRUCTURE
Document Type and Number:
Japanese Patent JP2000263335
Kind Code:
A
Abstract:
To remove an intrinsic defect in a flange sealing surface.
First, a flange sealing surface forming part 3 of an aluminum casting structure 1 is roughly machined. Secondly, a heat generating probe pin 5 is pressed against the flange sealing surface forming part 3 while rotating it. The base material of the flange sealing surface forming part 3 is allowed to plastically flow by frictional heat generated at this time, and the heat generating probe pin 5 is pushed therein. Successively, the heat generating probe pin 5 is moved along the circumferential direction while it continuously produces the plastic flow, to remove intrinsic defect. Thereafter, the flange sealing surface forming part 3 is finished to form a flange sealing surface 2.
Inventors:
KURIBAYASHI MUNETAKA
NEZAKI KOJI
ISHII YUTAKA
NEZAKI KOJI
ISHII YUTAKA
Application Number:
JP6501999A
Publication Date:
September 26, 2000
Filing Date:
March 11, 1999
Export Citation:
Assignee:
ISHIKAWAJIMA HARIMA HEAVY IND
International Classes:
B23P13/00; (IPC1-7): B23P13/00
Attorney, Agent or Firm:
Mitsuo Sakamoto
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