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POWDER HIGH SPEED TOOL STEEL HAVING FINE CARBIDE PARTICLE AND MANUFACTURING METHOD THEREFOR
POWDER HIGH SPEED TOOL STEEL HAVING FINE CARBIDE PARTICLE AND MANUFACTURING METHOD THEREFOR
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机译：具有细硬质合金颗粒的粉末高速钢及其制造方法
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摘要
PROBLEM TO BE SOLVED: To provide a powder high speed tool steel excellent in toughness by regulating particle diameter and the number of carbide and securing crystal particle of a metallic structure and isotropy of carbide, and a manufacturing method therefor.;SOLUTION: There is provided a powder high speed tool steel and a manufacturing method therefor, including adding a binder to a raw material of powder having average particle diameter of 3 to 10 μm by a water atomization method to make granulated powder with average particle diameter of 70 to 150 μm, pressure molding the granulated powder by a normal metallurgy process such as molding press, sintering the obtained powder molded body at 10 to 30°C lower temperature than a temperature in which a liquid phase is generated with a composition of the material, or conducting a compression sintering by applying pressure of 2 to 5 MPa during sintering.;SELECTED DRAWING: None;COPYRIGHT: (C)2018,JPO&INPIT
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