PROCESS FOR MANUFACTURE OF HOT ROLLED HIGH STRENGTH VANADIUM CONTAINING STEEL PLATES IN UNDER POWERED PLATE MILLS

摘要

A process for production of high-strength steel plates and, in particular, to the production of hot rolled high-strength steel plates in underpowered plate mills involving high-strength imparting vanadium content. Importantly, the process can be carried out in underpowered plate mills with rolling load capacity of up to about 5000 tons comprising by way of a selective heat composition having strength enhancing Vanadium content of up to about 0.22 % by wt.; and processing followed by finally subjecting the slabs thus treated to rolling in Plate Mill having load capacity of up to about 5000 tons such as to thereby obtain high strength plates with Vanadium content without significant increase in rolling load. The use of high vanadium content in steel plate manufacturing to increase the strength of plates without any significant increase in rolling load thus favour producing high-strength plates with low rolling load up to about 5000 tones.