分散强冷制备半固态成型浆料及坯料工艺的研究可研报告

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4、aaaaaaaaaaaaaahF分散强冷制备半固态成型浆料及坯料工艺的研究项目可行性研究报告一、选题的必要性目前，我国汽车工业正从载重卡车向轻型汽车和轿车发展的战略转移。铸件在汽车工业中占有重要地位，铸件重量约占汽车自重的20%--30%。当前，随着全球性的能源紧张和生态环境的日益恶化，要求汽车的重量轻、油耗省和尾气排放低的呼声越来越高。因此，汽车工业的发展趋势是用轻合金取代传统的黑色金属材料，如钢和铸铁，实现汽车的轻量化和节能化。因此，发达国家汽车工业对铝合金和镁合金等轻金属的需求量越来越大。轿车工业中铝合金铸件在2001年占整个铸件总量的50%左右，甚至出现全铝发动机和全铝车身。7Sele

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