Vacuum consumable electro-arc furnace

Abstract

The invention discloses a vacuum consumable electro-arc furnace. A copper crystallizer is arranged under a furnace body; a crystal cooling water jacket is arranged on the outer side of the copper crystallizer; an arc-stabilizing coil is arranged in the crystal cooling water jacket; a consumable electrode is arranged in the copper crystallizer; the upper end of the consumable electrode is detachably connected with an auxiliary electrode; a groove is formed in an upper end face of the auxiliary electrode; four clamping slots are uniformly formed in a side wall of the groove along a circumferential direction; a frustum-shaped notch is formed in the central position of the bottom part of the groove; four tracks are uniformly arranged on a conical surface of the lower end of an electrode rod along a radial direction; a slidable clamping block made of an insulation material is slidably connected onto each track; a frustum-shaped conductive head is arranged on the lower end of the electrode rod; the upper end of the electrode rod is connected with a telescopic head of a hydraulic oil cylinder; an anode of a smelting power supply is connected with the copper crystallizer; a cathode of thesmelting power supply is connected with the electrode rod; and a vacuum orifice is formed in one side of the furnace body. The vacuum consumable electro-arc furnace solves the problems that in the prior art, the conductivity between the electrode rod and the auxiliary electrode is poor, the clamping strength is low, and the service life of the auxiliary electrode is short.

Description

technical field [0001] The invention belongs to the technical field of metal smelting equipment, and relates to a vacuum consumable electric arc furnace. Background technique [0002] Vacuum consumable arc furnace is mainly used for smelting titanium, zirconium and other metals. In vacuum state, relying on the discharge arc between the anode and cathode of the power supply, the metal electrode of the cathode is continuously melted and dripped into the crystallizer for cooling and crystallization; Generally, the auxiliary electrode is used to connect the electrode rod and the consumable electrode. The upper end of the auxiliary electrode is clamped by a pneumatic chuck and the shoulder is in contact with the electrode rod to conduct electricity; the auxiliary electrode has a high temperature due to long-term work under high current. After repeated use, the strength of the conductive surface decreases due to heat. The auxiliary electrode and the electrode rod are clamped by th...

AI Technical Summary

Problems solved by technology

[0003] In order to achieve the above purpose, the present invention provides a vacuum consumable electric arc furnace, which solves the problems of poor conductivity between the electrode rod and the auxiliary electrode, low clamping strength, and short service life of the auxiliary electrode in the prior art.

Images