一、前言 本文所说的高融点金属是指元素中Vμ族和VIa族的体心立方结构的过度性金属。由于这些金属的融点高达2000～3000℃,所以,尽管近年来高频区域熔炼或电子束区域熔炼的技术有所发展,但是,对这些金属的熔炼仍然是比较困难的。所以如此,乃是与炼铁一样,问题的关键在于难以除 First, the preface In this article, the high melting point metal refers to the elements of the Vμ and VIa body-centered cubic structure of excessive metal. Due to the melting point of these metals as high as 2000-3000 ° C, smelting of these metals is still difficult despite the recent developments in high-frequency or smelting electron beam regions. So, just like iron-smelting, the crux of the problem is that it is hard to divide