Stainless steel for the production of steel cord,...

Details Stainless steel for the production of steel cord,... Stainless steel for the production of steel cord,...

C - Chemistry, Metallurgy

22

C

C22C 38/42 (2006.01) B60C 9/00 (2006.01) C21D 8/06 (2006.01) D07B 1/06 (2006.01)

Patent

CA 2229693

Acier inoxydable pour l'élaboration de fil tréfilé notamment de fil de renfort de pneumatique et procédé de réalisation dudit fil. Procédé d'élaboration d'un fil tréfilé, notamment de fil de renfort de pneumatique de diamètre inférieur à 0,3 mm par tréfilage d'un fil-machine de base d'un diamètre supérieur à 5 mm ou d'un fil préalablement tréfilé de base d'un acier de composition pondérale suivante : - carbone <= 40. 10-3% - azote <=40.10-3%, le carbone et azote satisfaisant la relation C + N <=50 10-3% - 0,2% <= silicium <= 1,0%, - 0,2% <= manganèse <=5%, - 9% < nickel <=12%, - 15% <= chrome <= 20% - 1,5% <= cuivre <= 4% - soufre <= 10.10-3 %, - phosphore < 0,050% - 40.10-4% <= oxygène total <= 120.10-4%, - 0,1.10-4% <= aluminium <= 20.10-4% - magnésium <= 5.10-4% - 0,1.10-4 % <= calcium <= 5.10-4% - titane <= 50.10-4% - des impuretés inhérentes à la fabrication, acier dans lequel les inclusions d'oxydes ont, sous forme de mélange vitreux, les proportions pondérales suivantes: - 30% <= SiO2 <= 65% - 5% <= MnO <= 40% - 1 % <= CaO <= 30% - 0% <= MgO <= 10% - 3% <=Al2O3 <= 25% - 0% <= Cr2O3 <= 10%.

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