由于镁合金材料的易燃性和激冷性(材料结晶温度范围短),导致镁合金压铸在我国还处于初步发展阶段.通过采用科学合理的熔化、压铸工艺,可以解决镁合金由于材料本身所决定的压铸问题,本文对压铸工艺的编排做了较为详细的介绍.

Owing to solve the problem that magnesium alloy is easy to burn during melting process,the method and pro-cess of covering agent and gas protection are con ducted to keep the alloy from burning in the air.In view of the charac-teristic that the magnesium alloy is easy to form slag,the oxygenated slag is removed from alloy by new melting technol-ogy and the quality of products is en sured.

结合生产情况,对感应电炉熔炼条件下的A380铝合金精炼工艺进行了工业试验和探讨.研究认为,由于产生新的夹杂,氮气精炼效果并不理想,并造成炉壁清渣困难.熔剂精炼效果较好,炉壁清渣容易,但其可操作性差.在对熔炼过程中合金及溶渣的运动情况进行分析的基础上指出,溶渣容易在坩埚侧壁和侧壁与底部的交界沉积.建议采用氩气吹熔剂的精炼方法解决精炼问题,并对炉壁渣的清理方法提出了建议.