Method of manufacturing a sheet or strip steel consists primarily Mn- austenite

摘要

Method according to the present invention, can have a strength that is improved compared with the prior art, is used for economical manufacture of the sheet steel strip mainly consisting Mn- austenite or (W). For this purpose, an alloy of the following elements (in weight%), Cr of 15.00~24.00%, Mn of 5.00 to 12.00%, and N of 0.10 to 0.60 percent at least, C of 0.01~0.2%, P Si, 0.07% maximum, S of 0.05% maximum, Nb of up to 0.5%, 0 maximum and / or Al of 3.00% maximum. I melted V of 5%, Ni of 3.0% maximum, Mo of 5.0% maximum, a steel that contains the unavoidable impurities as the balance iron and Cu and 2.0% maximum. In the casting gap formed between the roll roller rotating or two (2, 3), the steel is cast I (D) of the thin strip having a thickness of up to 10mm. Since the cooling very vigorously roll or rollers (2, 3), thin strip casting gap in (4) (D) is cooled at a cooling rate of 200K / s at least. Drawings alone, is a summary for.