Title:
PEENING DEVICE
Document Type and Number:
Japanese Patent JP2014151401
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a peening device which eliminates the possibility that a striking force adding member is left in a plant as a residue, and makes a peening portion compact.SOLUTION: A peening device has a chamber 2; a plurality of peening rods 4; a nozzle 6; and a high-pressure pump. The nozzle 6 is provided at a sealed end portion of the chamber 2. The plurality of peening rods (impact force adding members) 4 is disposed in the chamber 2, and one end portion of each peening rod 4 is attached to a side wall inner surface of the chamber 2. High pressure water supplied from the high pressure pump is jetted from the nozzle 6 into the chamber 2 to vibrate each peening rod 4. A tip end portion of each vibrated peening rod 4 repeatedly strikes a peening surface of a core shroud 10. By this striking, compressive residual stress is added to the peening surface.
Inventors:
NEFU AKIRA
SAITO NOBORU
HATO HISAMITSU
SAITO NOBORU
HATO HISAMITSU
Application Number:
JP2013024057A
Publication Date:
August 25, 2014
Filing Date:
February 12, 2013
Export Citation:
Assignee:
HITACHI GE NUCLEAR ENERGY LTD
International Classes:
B23P9/04; B23K31/00; B23P17/00; G21D1/00; C21D7/06
Domestic Patent References:
| JP2011056616A | 2011-03-24 | |||
| JPS60127928A | 1985-07-08 | |||
| JP2007083371A | 2007-04-05 | |||
| JPS5038871A | 1975-04-10 | |||
| JPH08220287A | 1996-08-30 |
Attorney, Agent or Firm:
Polaire Intellectual Property Corporation