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我厂过去熔化铜合金、铝合金及稀土镁中间合金是采用地坑式焦碳炉,在坩埚内熔化。这种工艺,劳动条件差,成
In the past, our factory melted copper alloy, aluminum alloy and rare earth magnesium intermediate alloy was pit-type coke furnace, melting in the crucible. This process, poor working conditions, into