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一、概况自70年代起,由于能源危机,汽车制造业争向轻型化和小型化迈进,力图把耗油量降下来。按经验统计,车重每增加100公斤,每行驶百公里将多耗汽油一升。因此,西德福特公司把齿轮箱及离合器外壳,后轴外壳等大件,由铸铁改为铝合金。该厂现有1000吨及2000吨锁摸力的压铸机17台。每天生产铸件的用铝量,已从77年的25吨,增加至85年的75吨。铸件回炉率(包括浇冒口)为42％,即每天需用铝液130吨。原有的熔化设备,必须进行改建。这些日耗130吨的铝液,其中75吨由外厂用特制的运
I. Overview Since the 1970s, due to the energy crisis, the automobile manufacturing industry has been striving to become lighter and smaller. It has tried to lower its fuel consumption. According to experience and statistics, each additional 100 kg of car weight, driving hundreds of kilometers of each will consume more gasoline one liter. Therefore, the West Germany company gearbox and clutch housing, rear axle housing and other large, from cast iron to aluminum alloy. The existing plant 1,000 tons and 2,000 tons of force-touch die-casting machine 17 Taiwan. The amount of aluminum used to produce castings per day has risen from 25 tons in 1977 to 75 tons in 1985. Casting rate of return (including pouring riser) is 42%, that is required daily liquid aluminum 130 tons. The original melting equipment, must be rebuilt. These days consumption of 130 tons of liquid aluminum, of which 75 tons by the factory with a special transport