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铸造铝合金具有比重轻、比强度高及铸造性能好等优点,在世界各行业中,铝铸件的应用量逐年有很大的增长。增长的最主要原因是受世界汽车工业发展的影响。根据资料统计,1978年铝铸件总产量为106万吨,1985年将增长到187.1万吨,80年代的前五年,铝铸造业的累积增长率将为77％。各主要工业国自从1970年到1978年铸造铝产品的增长率统计为:德国+22％;法国+39％,意大利+47％;美国+32％;日本+55％。汽车工业方面,以小轿车为例:1978年平均每辆车使用铝铸件的重量为26.8公斤,1980年增加到36.7公斤,1983年为46.3公斤,1985年将为54.4公斤。汽车行业使用铝铸件的总量,将从1978年的34.2万吨增加
Cast aluminum has the advantages of light weight, high specific strength and good casting performance. In all the industries in the world, the application of aluminum castings has greatly increased year by year. The main reason for the increase is the development of the world automobile industry. According to statistics, the total output of aluminum castings in 1978 was 1.06 million tons, which will increase to 1,871,000 tons in 1985. In the first five years of the 1980s, the cumulative growth rate of aluminum foundry industry will be 77%. The growth rates of cast aluminum products in the major industrialized countries between 1970 and 1978 were: + 22% in Germany; + 39% in France, + 47% in Italy; + 32% in the United States; + 55% in Japan. In the automotive industry, for example, in the case of cars, the average weight of aluminum castings used per vehicle in 1978 was 26.8 kg, from 36.7 kg in 1980 to 46.3 kg in 1983 and 54.4 kg in 1985. The total amount of aluminum castings used in the automotive industry will increase from 342,000 tons in 1978