汽车轻量化的要求导致铝合金应用的扩大。用铝合金代替铁,零件减重约65％。由于汽车减重而节约的燃料能耗,超过铸铝生产所增加的能耗的4倍。目前国外汽车材料中铝的用量比例以每年10％的速度递增。 我国轿车工业起步晚,汽车行业的铝合金铸造技术与国外的差距比灰铁件生产技术与国外的差距要大得多。法国雷诺汽车公司使用10台双工位低压 The demand for lightweight car led to the expansion of aluminum alloy applications. Use aluminum instead of iron, parts weight loss of about 65%. Fuel consumption due to vehicle weight loss is more than four times greater than the additional energy consumption of cast aluminum production. At present, the proportion of aluminum in foreign automotive materials is increasing at the rate of 10% per year. China’s car industry started late, the automotive industry aluminum casting technology and foreign disparity than the gray iron production technology and foreign disparity is much larger. French Renault Motor Company uses 10 double-station low pressure