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Patent Searching and Data


Title:
METHOD FOR CARRYING OUT PEENING
Document Type and Number:
Japanese Patent JP2014097510
Kind Code:
A
Abstract:

To provide a method for carrying out a peening to a welded structure, the method enabling a remarkable improvement in the fatigue strength of a weld joint by introducing compressive residual stress by applying, with a usage of a simple tool, a peening treatment to the welded structure after a welding.

A method for carrying out a peening is provided, the method enabling an improvement of fatigue performance of a weld joint by striking the surface of a mother material by using a peening tool 2 comprising a striking tool 1 having a flat part on its tip. The striking is to be carried out with the striking tool 1's striking direction being inclined to the opposite side to the welded part at 5 degrees or more and at 20 degrees or less with respect to the direction perpendicular to the surface of the mother material.


Inventors:
TOMO HAJIME
DOI MAKOTO
Application Number:
JP2012000249343
Publication Date:
May 29, 2014
Filing Date:
November 13, 2012
Export Citation:
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Assignee:
JFE ENG CORP
International Classes:
B23K31/00; C21D7/06
Attorney, Agent or Firm:
酒井 正己
加々美 紀雄