Hot rolled steel having improved formability

Details Hot rolled steel having improved formability Hot rolled steel having improved formability

B - Operations, Transporting

22

D

B22D 27/00 (2006.01) C21C 7/04 (2006.01) C22C 38/14 (2006.01)

Patent

CA 2396078

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.

Méthode de production d'acier laminé à chaud à formabilité améliorée et entraînant une faible formation d'argent. La méthode comprend l'ajout de titane et de bore à l'acier en fusion pour qu'ils se combinent avec l'azote libre et l'éliminent avant le laminage. Le titane est ajouté de sorte que la quantité d'azote restante après l'ajout constitue environ 0,0005 % à 0,0025 % du poids, et le bore est ajouté pour éliminer le reste de l'azote par la formation de BN.

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