一、前言 真空双电极自耗炉是八十年代初发展起来的一项新技术。真空双电极自耗在国外称之为真空双电极电弧重熔(Vacuum Arc Double Electrod Remelting),简称为VADER,与一般的真空自耗VAR(Vacuum Arc Remelting)的根本区别在于将自耗电极的重熔与铸锭分开进行,而正是由于这一变革使得铸锭的组织结构发生了根本的变化,从而在性能上得到了极大的提高。众所周知真空自耗VAR是在一根单一的自耗电 I. Introduction Vacuum double electrode consumable furnace is a new technology developed in the early eighties. Vacuum self-consumption of the two electrodes in foreign countries called vacuum double electrode arc remelting (Vacuum Arc Double Electrod Remelting), referred to as VADER, and the general vacuum VAR (Vacuum Arc Remelting) is the fundamental difference between the consumable electrode Remelting and ingot separately, and it is precisely because of this change makes the ingot organizational structure has undergone fundamental changes, which has been greatly improved in performance. It is well-known that vacuum consumable VAR is in a single self-consumption