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2.5 良好的熔炼条件是提高金属纯洁度的重要环节熔炼是变形铝及铝合金铸锭生产中的重要工序,熔炼工序的任务是:保证合金的化学成分和杂质含量符合标准和铸造工艺的要求;确保合金的纯洁度高、含气含渣少;熔体温度一方面要满足铸造工艺需要,另一方面又不能过高,以免造成强烈的吸气和氧化.工业上广泛采用的熔炼设备为火焰炉和电阻炉,熔炼过程中,铝及铝合金熔体和炉气、炉衬要发生一系列物理化学反应,熔炼工艺本身和熔炼操作技术都对熔体的纯洁度发生重要影响.
2.5 good smelting conditions is an important part of improving the purity of the metal smelting deformation of aluminum and aluminum ingot production is an important process, smelting process tasks are: to ensure that the alloy chemical composition and impurity content in line with the standards and casting process requirements; To ensure the high purity of the alloy, less gas-containing slag; melt temperature on the one hand to meet the needs of the casting process, on the other hand can not be too high, so as to avoid a strong aspiration and oxidation. Industry widely used melting equipment for the flame Furnace and resistance furnace, melting process, aluminum and aluminum alloy melt and furnace gas, furnace lining to a series of physical and chemical reactions, the melting process itself and the melting operation of technology have a significant impact on the purity of the melt.