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一、前言在电子束熔炼过程中,由于熔池可以高度过热,金属可以长时间保持在液态,而且熔炼时真空度高,因此对于去除杂质是很有利的。但事物总是一分为二的,对去除杂质的有利条件,却往往造成对易挥发组元成分控制上的困难。通过电子束炉炼出来的锭子,有时发现合金成分在一个锭子内波动较大,甚至造成局部锭子成为不合格品。了解锭子成分不均匀性形成的原因,找出解决这个问题的办法,对于提高成品收得率和质量
I. INTRODUCTION In the electron beam melting process, because the molten pool can be highly overheated, the metal can remain in the liquid state for a long time, and the vacuum degree is high during melting, so it is very advantageous for removing impurities. However, things are always divided into two, on the favorable conditions for the removal of impurities, but often result in the control of volatile components of the composition of the difficulties. Spindles emanated from electron beam furnaces sometimes show large fluctuations in the composition of the alloy in one spindle and can even result in partial spindles becoming unqualified. Understand the reasons for the formation of uneven composition of the spindle to find a solution to this problem, for improving the yield and quality of finished products