Improvements in and relating to carbide-free bainitic steels...

Details Improvements in and relating to carbide-free bainitic steels... Improvements in and relating to carbide-free bainitic steels...

C - Chemistry, Metallurgy

21

D

C21D 9/04 (2006.01) C21D 7/13 (2006.01) C22C 38/34 (2006.01) C22C 38/38 (2006.01)

Patent

CA 2210797

A method of producing a wear and rolling contact fatigue resistant bainitic steel product whose microstructure is essentially carbide-free. The method comprises the steps of hot rolling a steel whose composition by weight includes from 0.05 to 0.50 % carbon, from 1.00 to 3.00 % silicon and/or aluminium, from 0.50 to 2.50 % manganese, and from 0.25 to 2.50 % chromium, balance iron and incidental impurities, and continuously cooling the steel from its rolling temperature naturally in air or by accelerated cooling.

Méthode pour fabriquer un produit d'acier bainitique résistant à l'usure et à la fatigue due au laminage dont la microstructure est essentiellement sans carbure. La méthode comprend l'étape du laminage à chaud de l'acier composé en poids de 0,05 à 0,50 % de carbone, de 1,00 à 3,00 % de silicium et/ou d'aluminium, de 0,50 à 2,50 % de manganèse et de 0,25 à 2,50 % de chrome, le reste étant du fer et des impuretés, et l'étape du refroidissement continu de la température de laminage de l'acier naturellement à l'air ou par refroidissement accéléré.

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