HEAT-TREATMENT APPARATUS FOR ALUMINUM ALLOY MATERIAL AND HEAT-TREATMENT METHOD THEREFOR

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