HIGH CR FERRITIC STAINLESS STEEL FOR LOWERING SURFACE DEFECTS AS STICKING OF HOT ROLLED STEEL AND METHOD OF MANUFACTURING THE SAME

摘要

The present invention relates to a high chromium ferritic stainless steel and a method for manufacturing the same, a method for manufacturing a high chromium ferritic stainless steel and a method for manufacturing a high chromium ferritic stainless steel to reduce surface defects (sticking phenomenon) to which the rolled material and the rolling roll are stuck. It is about.;High chromium ferritic stainless steel, which reduces the sticking surface defects during hot rolling of the present invention, in weight%, Cr: 17-23%, C; 0.02% or less, N: 0.02% or less, Ti: 0.2-0.4%, Mn: 0.3% or less, Cu: 0.2-0.5%, Al: 0.03-0.10%, S: 0.002% or less, Si: 0.15% or less, Nb : It satisfies 0.06 to 0.45% and the remaining components consist of Fe and unavoidable impurities. In addition, the method of manufacturing a high chromium ferritic stainless steel of the present invention is a step of heating the hot furnace temperature of 1160 ~ 1280 ℃ during hot rolling of the hot rolled steel sheet composed of the above composition, and the finish rolling of the heated hot rolled steel sheet is subjected to constant rolling Simultaneously heating in accordance with the longitudinal direction of the rolled plate using a bar heater (Bar Heater) at the same time.;High chrome, ferritic stainless steel, surface defects, sticking, hot rolling