Mixed powder for powder metallurgy, sintered body, and method of manufacturing sintered body
A powder metallurgy and manufacturing method technology, applied in metal processing equipment, transportation and packaging, coating and other directions, can solve the problems of unfavorable addition, long-term sintering, uneven metal structure, etc., and achieve excellent work efficiency and high fluidity. Effect
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[0109] [Example 1]
[0110] The iron-based powder uses atomized raw powder with different circularity. A high-speed mixer (LFS-GS-2J manufactured by Shenjiang Powtec Co., Ltd.) is used to pulverize the atomized powder, thereby making the circularity of the atomized powder different.
[0111] Mo oxide powder (average particle size: 10μm) was added to the iron-based powder at a predetermined ratio, mixed with a V-type mixer for 15 minutes, and then heat-treated in a hydrogen atmosphere with a dew point of 30°C (holding temperature: 880°C, Holding time: 1 hour), a partial alloy steel powder in which a predetermined amount of Mo shown in Table 1 was diffused and adhered to the surface of the iron-based powder particles was produced. It should be noted that various changes were made to the amount of Mo as shown in sample Nos. 1 to 8 in Table 1.
[0112] Part of the produced alloy steel powder is buried in resin, and grinding is performed to expose part of the cross section of the alloy ...
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[0135] [Example 2]
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