镁合金熔模铸造技术发展现状

Development Status on Investment Casting Magnesium Alloy

镁合金是目前应用的密度最小的金属结构材料,在航空航天的轻量化方面有很好的应用前景。随着应用技术与要求的提高,用于航天航空领域的零部件逐渐向精密化、薄壁化、集成化方向发展。相比于传统的镁合金铸造方式,熔模铸造技术所具有的工艺特点对于生产精密复杂的薄壁零件有独特优势,将熔模铸造用于镁合金铸件生产能够更好地适应航空航天零部件的要求。介绍了镁合金成形技术,并重点综述了镁合金熔模铸造技术以及目前存在的金属-铸型界面反应问题和研究现状。

Magnesium alloy is the lightest metal structure material for application at present,which has a good application prospect in the lightweight aspect of aerospace.The aerospace application parts are gradually developed towards precision,thin-walled and integrated aspects with the application techniques and requirements increase.Compared with traditional magnesium casting techologies,the process characteristics of investment casting technology have unique advantages for the production of precision and complex thin-walled parts.The application of investment casting in magnesium alloy can better meet the requirements of aerospace parts.The forming technology of magnesium alloy was introduced,and the investment casting for the Mg alloy was emphatically summarized.The existing issue of metal-mold interface reaction and research status were reviewed.