Difference between steel normalizing rolling and rolling and thermo mechanical rolling

1. Normalized rolling
The rolling process of final deformation within a certain temperature range results in a material condition equal to the condition obtained after normalizing, so that the special value of mechanical properties can be maintained even after normalizing.
The abbreviation of this delivery condition is + N.

2. Rolling
This delivery condition does not have any special rolling and / or heat treatment conditions. The abbreviation of this delivery condition is + AR.

3. Thermomechanical rolling
The rolling process of final deformation within a certain temperature range leads to some characteristics that can not be obtained or repeated by heat treatment alone.
Note 1: continuous heating above 580 ° C can reduce the strength value. If the temperature above 580 ° C is required, the parameters shall be provided to the supplier.
Note 2: the thermomechanical of delivery condition m caused by rolling may include the process of increasing cooling rate, with or without tempering, including self tempering, but excluding direct quenching and quenching and tempering.