Process for the manufacture of microalloy steels

摘要

Process for the manufacture of microalloy steels, in which starting from a microalloy steel with the following chemical composition ranges as % by weight: C 0.25-0.50, Mn 1.3-1.6, Si 0.3-0.7, V 0.09-0.12, Ti 0.012-0.020 and N 100-200 (ppm) which is heated at forging temperature above 1000 degree C and forged, and subsequently cooled at a rate of 4-10 degree C/s to a temperature between 500 and 570 degree C which forms an acicular ferrite microstructure. Of application in the steel industry.