Common types of heating furnaces

1. Two-stage and three-stage heating furnaces. This type of furnace is currently widely used in medium and small steel rolling workshops. There are two ways to discharge this heating furnace. The billet slides onto the roller along the discharge slope at the discharge end. In the side discharge method, the steel is pushed onto the discharge trough and is pushed out of the guard from the side by the steel discharging machine. The advantage of end discharge is that the discharge is convenient and is not limited by the number of furnaces. The disadvantage is that the guard is less tight. The advantage of side discharge is that the furnace is tighter, but it is difficult to discharge more than two heating guards side by side, and it is not easy to handle when the steel is bonded.

2. Multi-stage heating furnace. This type of furnace is suitable for use with large rolling mills with larger production. The guards are relatively long, and the discharge method generally adopts end discharge. At first, the guard was 4-stage, and later it was made into 5-stage, 6-stage and even 8-stage as the output continued to increase.

3. Stepping heating furnace. At present, single-sided heating walking furnace and double-sided heating walking furnace are more commonly used. Single-sided heating furnaces are mostly used to heat thin billets, small billets, round billets and steel pipes that cannot be heated by push-type heating guards. Double-sided heating walking furnaces are generally large furnaces with high output, and are mostly used with strip steel mills with hourly outputs of several hundred tons to more than one thousand tons.

4. Ring heating furnace. This type of furnace is currently widely used for heating billets before perforation in steel pipe workshops, and is also used for heating before rolling wheel rims. In the machinery industry, this type of furnace is also widely used, mostly for heating billets or steel cakes before die forging.

5. Solid bottom heating furnace. This type of furnace is suitable for occasions with small billets and low output. The furnace is generally short, and sometimes the bottom of the furnace has a certain slope to facilitate pushing steel. This type of furnace mostly uses side discharge.