PEENING DEVICE

• Main Authors: SAITO NOBORU, NEFU AKIRA, HATO HISAMITSU
• Format: Patent
• Language: English
• Published: 25.08.2014
• Subjects: CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMBINED OPERATIONS; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACHINE TOOLS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR POWER PLANT; OTHER WORKING OF METAL; PERFORMING OPERATIONS; PHYSICS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SOLDERING OR UNSOLDERING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; UNIVERSAL MACHINE TOOLS; WELDING; WORKING BY LASER BEAM

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.