According to its structure, which kinds of heating furnaces can be divided into?

Heating furnaces for medium and heavy plates are divided into continuous heating furnace, chamber heating furnace and soaking pit furnace according to their structures.

Soaking pits are mostly used for rolling extra thick plates from ingots; The chamber furnace is suitable for extra heavy, extra light, extra thick and extra short slabs, or billets or ingots with many varieties and few batches and alloy steel grades, and the production is relatively flexible; Continuous heating furnace is suitable for mass production of a few varieties, which is not convenient for special heating of a few slabs. Therefore, in workshops with mass production of many varieties, in addition to continuous heating furnace, chamber furnace is often set at the same time. In order to overcome the cold marks on the slide, the continuous reheating furnace for medium and heavy plate has been changed into hot slide or stepping type in recent years.

The heating temperature and the time in the furnace directly affect the size of the original austenite grain. The longer the heating time is, the higher the heating temperature is, and the larger the original grain size is; More importantly, the heating temperature directly affects the start rolling temperature. The higher the start rolling temperature is, it is not conducive to temperature control rolling or reduction control rolling.