ARC MELTING FURNACE AND ARC MELTING METHOD FOR SUBSTANCE TO BE MELTED

摘要

The purpose of the invention is to provide an arc melting furnace and an arc discharge control method with which a melted substance that has been melted efficiently can be stirred without causing workers an enormous amount of labor. The furnace is provided with: a mold (3) that is set inside the melting chamber (2) and has a depression (3a); a non-consumable discharge electrode (5), which heats and melts a substance to be melted that is held in the depression (3a); a power source unit (10) that supplies electric power to the non-consumable discharge electrode (5); and a control device (11) that controls the output intensity of the arc discharge from the non-consumable discharge electrode by controlling the power source unit. The control device (11) changes the output intensity of the arc discharge from the non-consumable discharge electrode (5) and stirs the molten metal, which results from heating and melting the substance to be melted, by controlling the output current from the power source unit (10) and the frequency of said current.