数年来,我厂使用的ZL401合金采用传统的熔炼方法,将Al—Zn—Si等原金属材料由铝加工厂熔制成预制合金,然后,铸造时将合金再二次熔炼。显然,这样做不仅生产周期长,而且成本也很高。 将ZL401合金所需的原金属材料按比例配好,在坩埚内熔炼后直接浇注铸件。试验表明,一次熔炼法只要工艺掌握合理,步骤 Over the years, ZL401 alloy used in our factory adopts the traditional smelting method to melt the original metal materials such as Al-Zn-Si from the aluminum processing factory into the pre-alloy and then remelt the alloy during casting. Obviously, this is not only long-term production cycle, but also costly. ZL401 alloy required for the original metal material in proportion with the good, after casting in the crucible casting castings. Experiments show that a melting method as long as the process to grasp the reasonable steps