We differentiate three different rolling methods:
conventional hot rolling at high forming temperatures, normalizing rolling and thermomechanical rolling.
The pre-material is the same for each of the rolling methods: a homogeneously heated slab from the heating furnace with a relatively coarse-grained microstructure.
The simplest rolling method is hot rolling at high temperatures. Immediately following furnace extraction, the slab is rolled to dimension. Forming occurs in the recrystallization zone. This rolling method primarily serves as a shaping process. The rolling process also homogenizes the microstructure and refines the grain size.
After being rolled, the plate is cooled in static air. The term as-rolled condition stems from the fact that the product is not heat-treated. This rolling method is used for materials that are subsequently heat-treated by the customer (heat-treatable steels).