| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat-treatment apparatus for aluminum alloy material and a heat-treatment method therefor with which the cooling strain can be restrained. SOLUTION: In the heat-treatment method or the heat-treatment apparatus for aluminum alloy material with which a thin casting W composed of an Al-Si based aluminum alloy is raised up to the temperature near the eutectic point and held in this temperature for a prescribed time. Then, a solution treatment is performed by blowing cooling medium to the casting W from a plurality of nozzles 5 and rapidly cooling. The plurality of nozzles 5 for blowing the cooling medium onto the work W while facing the work W, are arranged, and the cooling performance of the cooling medium for blowing and supplying from each nozzle 5 is adjusted by changing at least anyone of the flowing rate, flowing speed and the temperature so as to cope with the thickness at the cooling portion in the work W. COPYRIGHT: (C)2007,JPO&INPIT
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