铝合金轮毂金属型铸造气孔缺陷分析及控制

Analysis and Controlling of Gas Cavity in Aluminium Alloy Wheel Rim by Gravity Die Casting

对铝合金轮毂金属型铸造气孔缺陷形成的机理和预防措施进行了分析．为了防止产生气孔，应控制模具尺寸，以及铝合金的熔炼、精炼和浇铸工艺．

The formation mechanism of gas cavity and measure for overcoming the defect in aluminium alloy wheel Rim by gravity die casting are analyzed. The die design, alloy melting, refining and pouring should be controlled to prevent gas cavity forming.