Arc furnaces come in many types. Today, let’s take a look at the common classification methods.
1. Classified by Electrode Melting Method
(1) Non-consumable electrode arc furnace
Uses tungsten or graphite electrodes. During melting, the electrodes do not melt or melt only slightly.
(2) Consumable electrode arc furnace
Uses the molten metal itself as the electrode, and the metal electrode melts and is consumed during operation.
2. Classified by Arc Length Control Method
(1) Constant-arc-voltage automatic control furnace
The voltage between electrodes is compared with a preset value. The signal is amplified to drive the consumable electrode up and down, maintaining constant arc length.
(2) Constant-arc-length automatic control furnace
Uses constant arc voltage to approximately maintain a constant arc length.
(3) Droplet-pulse automatic control furnace
Arc length is controlled automatically based on the pulse frequency and duration generated during droplet formation and detachment.
3. Classified by Operating Mode
(1) Batch-type arc furnace
Each melting cycle forms a single batch.
(2) Continuous arc furnace
Two typical forms:
- A rotating furnace body;
- Two furnaces sharing one DC power supply. After one furnace finishes melting, the power is switched to the other, starting the next melt immediately.
4. Classified by Furnace Structure
(1) Fixed arc furnace
(2) Rotary arc furnace
These are the common classifications of arc furnaces. For more information, follow our official website!