COMBINATION METHOD OF ELECTRODE FOR VACUUM ARC MELTING APPARATUS

摘要

The present invention relates to a kind of methods to be used in conjunction with a copper holder and a tungsten rod to a vacuum arc melting electrode include a tungsten rod and a copper holder. More particularly it relates to a kind of for combining the internal diameter of the tungsten rod copper holder that wherein bar is inserted into make smaller than the diameter of tungsten rod and heating. Then, after tungsten rod is connected to copper holder, tungsten rod is cooling by the contraction of copper holder. ;Conventional vacuum arc consumable electrode is soldered to tungsten rod and copper holder by silver soldering to combine the tungsten rod with a copper holder. ;Contact surface is welded for example between copper holder and tungsten rod since the present invention does not need a separating step, process can be simplified, and manufacturing cost can be reduced. When tungsten rod is by high temperature melting technique heat supply, because retainer is heated and extends, the part for being connected to tungsten rod is released, so that tungsten rod and copper holder can be separated stability with improvement.