(2) Self consuming electrode electric arc furnace, which uses melted metal materials as electrodes, and the metal electrodes melt while consuming themselves.

According to the adjustment method of arc length:

(1) Constant arc voltage automatic control type arc furnace, it compares the working voltage between two aspects with the given working voltage, and its error is driven by the increase of data signal to adjust the consumable electrode to maintain a constant arc length.

(2) Constant chord length automatic control type electric arc furnace, which uses the constant working voltage of the arc to similarly manipulate the constant length of the arc.

(3) Droplet single pulse automatic control arc furnace, which automatically controls the constant arc length based on the frequency and delay time of the single pulse formed in the metal material droplet generation and dripping process, and the relationship between the chord length.

Divided by working mode:

(1) Regular working electric arc furnace, that is, each melting furnace is taken as one cycle time.

(2) Continuous working electric arc furnace, there are two ways of this type of electric arc furnace. One is the furnace wall turntable type; Another method is to use the same DC stabilized power supply for two furnaces, which means that after one furnace completes melting, the switch power supply is switched to the other furnace and the next furnace is gradually melted.

Classified by furnace wall structure:

(1) Mobile electric arc furnace.

(2) Rotary arc furnace.