由于向完全无熔剂法的过渡,所以制造镁合金熔化镁时使用的熔剂就要取消了。熔化了的镁因与空气接触时发生燃烧,是处理困难的一种金属。为了避免金属表面同空气接触,通常使用金属氯化物和营石粉末制成的熔剂。熔剂在金属表面上扩展形成薄膜,使其附近的氧化物和杂质可以除去。熔剂本身并不是价格很贵的东西,但是由于氯化物粉末飞散而腐蚀周围的设备,这就是现存的一个问题。另外,熔剂还存在着健康上的问题和爆炸问题。新的无熔剂熔化法是四年前开始的,当时密执安大学J.D.Hanawalt博士发现了一种现象,即在空气或二氧化碳气中加入0.1％以下的六氟化硫就能防止镁的燃烧。在熔体上面产 Due to the transition to a completely fluxless process, the flux used to make the magnesium alloy magnesium alloy is eliminated. Melted magnesium burns as it comes in contact with air and is a metal that is difficult to handle. In order to avoid metal surface contact with air, usually made of metal chloride and camphor powder flux. The flux expands to form a thin film on the metal surface so that oxides and impurities in the vicinity of it can be removed. The flux itself is not an expensive commodity, but it is an existing problem due to the corrosion of surrounding equipment due to the scattering of chloride powder. In addition, the flux still has health problems and explosion problems. The new fluxless melting process started four years ago when Dr. J. D. Chanawalt, MD, of the University of Michigan, discovered the phenomenon that the addition of 0.1% or less sulfur hexafluoride to air or carbon dioxide gas prevents magnesium from burning. Production above the melt