PRODUCTION OF AUSTENITIC STAINLESS STEEL HOT ROLLED STEEL STRIP EXCELLENT IN SURFACE PROPERTY

摘要

PURPOSE: To prevent scabby flaws in the hot rolled steel strip in a Cr-Ni austenitic single phase steel. ;CONSTITUTION: In an austenitic stainless steel in which Aγ value defined by the following formula (1) is regulated to ≥-9.0 in the formula: Aγ=Ni+41.2C +21.4N-1.16(Cr+0.26Mn+1.85Si), at the time of subjecting the continuously cast slab in which components are regulated to ≤0.003 mass% S and 0.002 to 0.010 mass% B to hot rolling, the long side face of the slab is coated with an oxidation preventing agent by 0.2 to 1.0mm film thickness, which is heated to the temp. range of ≤1250°C and is thereafter subjected to hot rolling.;COPYRIGHT: (C)1996,JPO