METHOD OF THERMOMECHANICAL PROCESSING OF LEAF LOW CARBON MICROALLOYED STEEL FORMING THE STRUCTURE OF NEEDLE FERRITE

摘要

Method of thermomechanical processing of leaf low carbon microalloyed steel forming the structure of needle ferrite includes heating and shutter slabs, rough and finishing rolling to the desired thickness of the sheet, followed by slow cooling, and cooling rolled begin immediately after the end of the finish rolling temperature 900 ... 950 ° C and continue to cool 200 ... 250 ° C at 15 ... 30 ° C / sec.