PRODUCTION METHOD OF ALUMINUM WHEEL AND ALUMINUM WHEEL

摘要

PROBLEM TO BE SOLVED: To secure strength, light weight and toughness of an aluminum wheel and besides to enhance productivity thereof.;SOLUTION: A die casting is conducted by using aluminum alloy containing 5 to 12 mass% of Si, 0.2 to 0.5 mass% of Mg, 0.16 to 0.8 mass% of Fe, 0.3 to 0.5 mass% of Mn, 0.5 mass% or less of Cu, 2 mass% or less of Zn and 0.03 to 0.2 mass% of Ti (S1). A semi-product after the die casting is cooled to 350°C or less in a mold (S2). The semi-product is taken out from the mold (S3) and subjected to a water cooling (S4). The semi-product is held in the range of 5 to 70°C for 3 hours or more (S5). A heating treatment in the range of 140 to 220°C for 0.5 hours or more and less than 2 hours is conducted on the semi-product (S6).;COPYRIGHT: (C)2016,JPO&INPIT