| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of sinter forged aluminum-based parts exhibiting excellent wear resistance and further having improved tensile strength and elongation. SOLUTION: The componential composition of the whole body of raw material powder comprises, by mass, 3.0 to 10% Zn, 0.5 to 5.0% Mg, 0.5 to 5.0% Cu, and the balance Al with inevitable impurities, and also, as the raw materials, aluminum powder of 15% and aluminum alloy powder including the whole quantity of Zn are at least used. A blending process where these raw material powder is mixed, a compacting process where the mixture of the raw material powder obtained in the above stage is packed into a die, and is thereafter compacted under the compacting pressure of≥200 MPa, a sintering process where the compact obtained in the above stage is sintered at a sintering holding temperature of 580 to 610°C, and is thereafter cooled to an ordinary temperature, and a forging process by either a cold forging process where the sintered compact obtained in the above process is subjected to cold forging at room temperature and also at an upsetting rate of 3 to 40% or a hot forging process where it is subjected to hot forging at 100 to 450°C and at an upsetting rate of 3 to 70%, are carried out in this order. COPYRIGHT: (C)2006,JPO&NCIPI
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