| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing Cr-Ni-based stainless steel strip which does not give rise to a scab during hot rolling and has good surface characteristics. SOLUTION: Cr-Ni-based stainless steel containing≤0.080mass% C, 0.01 to 1.5mass% Si, 0.01 to 4.0mass% Mn,≤0.05mass% P,≤0.03mass% S, 16.0 to 25.0mass% Ni, 20.0 to 30.0mass% Cr,≤0.05mass% Ni, 0.01 to 1.0mass% Mo, 0.001 to 1.0mass% Cu, and subjected component regulation in such a manner that the F value and A value defined by F(mass%)=Cr+Mo+Si, A(mass%)=Ni+35C+20N+0.2Mn+0.25Cu satisfy F=22.0 to 33. 0, A=27.0 to 28.0, F-A=2.5 to 11.5 is smelted and is continuously cast. The amount ofδferrite of the slab is regulated to 0.5 to 5.0vol% by a heat treatment of 1,000 to 1,300°C and thereafter the cast steel is hot rolled. COPYRIGHT: (C)2006,JPO&NCIPI
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