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目前,我国各生产铸造铝合金厂家所用的Al—Si中间合金,一般还是沿用书本上介绍的方法,且含Si量一般在11.0～13.0％,最高也不超过15.0％。这样,在生产铝合金铸件时,所使用的Al—Si中间合金量增加,使制备Al—Si中间合金次数增加。这不仅会增加能源的消耗,且降低了生产效率。而我厂目前生产铝合金铸件所用的Al—Si中间合金含Si量为25.0％左右,因而减少了Al—Si中间合金的制备次数,提高了生产效率。我厂生产铝合金所用的中间合金,是我厂自己制备的。生产ZL101、ZL702A1等牌号的铸件,效果一直很好。 下面将把我厂熔化Al—Si中间合金的方法概括如下。
At present, Al-Si master alloys used in China’s production of cast aluminum alloy generally follow the method described in books, and the content of Si is generally 11.0 to 13.0% and the maximum is not more than 15.0%. Thus, in the production of aluminum alloy castings, the amount of Al-Si master alloy used increases, making the number of Al-Si master alloys increased. This not only increases the energy consumption but also reduces the production efficiency. However, the Si content of Al-Si master alloy currently used for producing aluminum alloy castings in our factory is about 25.0%, thereby reducing the preparation times of Al-Si master alloy and improving the production efficiency. I plant the middle alloy used in the production of aluminum alloy, is my own plant preparation. Production ZL101, ZL702A1 other brands of castings, the effect has been good. The following will be our factory melting Al-Si master alloy is summarized as follows.