VALVE AND ELECTRIC POWER PLANT USING THE SAME

Japanese Patent JP3721300

B2

PROBLEM TO BE SOLVED: To provide a valve of which the corrosion/erosion resistance of a sliding portion is improved, and also the manufacturing of which is easy, and moreover high resistivity against shear force is provided, and to provide an electric power plant using it.
SOLUTION: This invention is related to the valve manufactured in the shape, jointed touchingly on the outside circumference of a circular protrusion or on the inside circumference of the ringed protrusion, of which the wear resistant member composed of the corrosion resistance/the wear resistant cobalt base alloy of which the eutectic carbide preferably in less than 30 μm or in less than 10 μm in granular diameter is distributed discontinuously, a nickel base alloy, or an iron base alloy is provided on the surface of the sliding portion by collectively forming eutectic carbide in the alloy having the eutectic carbide into a plurality of granulation or the plurality of massive substances on the surface of the sliding portion of the basic member portion constituted of carbon steel composed of ferrite and pearlite mainly, structural alloy steel, low alloy steel or stainless steel, and used as the water supply valve or the like for a nuclear or thermal power plant.

JP4847888	Method for improving residual stress in piping of nuclear power plants and high-frequency heating equipment
JPH1123565	CORROSION ENVIRONMENT SCC CRACK DEVELOPING PREDICTION METHOD
WO/2000/024004	UNMANNED SEAFLOOR POWER STATION AND METHOD OF EMPLOYMENT

Mitsuo Chikazaki
Shizuo Matsushita
Jiro Kuniya
Yoshihisa Kiyotoki
Takahiko Kato
Yoshiteru Chiba

JP2000237863A

November 30, 2005

August 07, 2000

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株式会社日立製作所

G21D1/00; B23K20/00; F01D17/10; F01D25/00; F16K25/00; B23K103/04; (IPC1-7): F16K25/00; B23K20/00; F01D17/10; F01D25/00; G21D1/00

JP60086239A
JP59179283A
JP61145170U
JP10009408A
JP2000006210A
JP49083627U
JP55045032U
JP62075285U
JP56018167A
JP60121088A
JP7018365A

Yukihiko Takada
Masaru Takenouchi

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