铝合金铸件在机械加工过程中,产生大量的切屑废料,约占铸件重量的20～30％。这些切屑及熔炼中的锅底残渣等渣料必须重熔、精炼,方能使用。如正确地组织废料的收集、保管与重熔,可以获得优质的二次合金,其性能并不亚于用金属锭块所熔制的一次合金,这对节约有色金属将具有重大意义。一、切削废料的收集和分类首先对铝切屑按不同牌号进行分类堆放,以免熔制的成分不匀,难以配料。然后将同一牌号的切屑分干净的和不干净的(带有水分、油污、乳浊液等)两类,并用磁铁吸出铁夹杂物。对于浇注场地上的飞溅碎料等残余渣 Aluminum alloy castings in the machining process, resulting in a large amount of scrap, accounting for about 20 ~ 30% of the weight of the casting. These chips and smelting bottom of the residue residue and other materials must be remelted, refining, can only be used. Such as the correct organization of waste collection, storage and remelting, you can get a good secondary alloy, its performance is no less than with a metal ingot melting alloy, which will save significant non-ferrous metals. First, the collection and classification of scrap cutting First of all, aluminum scrap classification by different grades stacked, so as not to melt the composition of uneven, difficult ingredients. Then the same grade of chips were clean and unclean (with water, oil, emulsion, etc.) two categories, and sucked iron magnets with foreign objects. Residual slag for splashing scraps on the pouring site