HOT ROLLED STEEL HAVING IMPROVED FORMABILITY

摘要

A method of producing hot rolled steel having improved formability and minimal silver formation comprises the addition of Titanium and Boron to the molten steel to combine with and remove the free nitrogen prior to rolling. Titanium is added so that the amount of nitrogen remaining after Ti addition is about 0.0005 wt% to about 0.0025 wt% and Boron is added to remove the balance of the nitrogen by forming BN.