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在镁熔炼技术方面,70年代的一大发展是以六氯化硫保护气氛精炼镁。过去通常采用的熔剂保护外加热敞口坩埚精炼镁,热效只有10～25％,污染环境,腐蚀设备。国际镁研究中心巴蒂尔哥伦布研究室研究了以空气加0.04～1.5％六氟化硫为保护气氛精炼镁或AZ91B合金的方法,与原采用的熔剂精炼法比较,熔炼损失可减少一半,热效提高一倍,成本低而无污染。采用SF6-空气混合气作为镁精炼的保护剂,适宜的熔炼温度范围为705～760℃,同时
In the field of magnesium smelting technology, one of the major developments in the 1970s was the refining of magnesium with sulfur hexafluoride gas. In the past usually used flux protection outside the open crucible magnesium, thermal efficiency of only 10 to 25%, polluting the environment, corrosion of equipment. International Magnesium Research Center Battier Columbus Research Laboratory with air plus 0.04 ~ 1.5% sulfur hexafluoride as a protective atmosphere refining magnesium or AZ91B alloy method, compared with the original flux refining method, the melting loss can be reduced by half, the heat Efficiency doubled, low cost without pollution. The use of SF6-air mixture as magnesium refining protective agent, suitable melting temperature range of 705 ~ 760 ℃, at the same time