THERMOMECHANICAL TREATMENT METHOD

摘要

The invention relates to a thermomechanical treatment method for producing thick plate (1) from a starting material in order to increase the toughness, in particular the low-temperature toughness, of the thick plate (1), wherein the thick plate (1) is heated, is partially and finally shaped by rolling, and is cooled down at an accelerated rate compared to a cool-down at ambient temperature, wherein the thick plate (1), which is heated to above the Ac3 temperature for partial shaping, is cooled down at an accelerated rate after the thick plate has been finally shaped. In order to achieve advantageous properties of the thick plate, the thick plate (1) is cooled down to below the Ar3 temperature at an accelerated rate between the partial shaping and the final shaping and then is inductively heated to above the Ac3 temperature.