| 摘要 |
PURPOSE:To produce a ferritic stainless steel sheet having excellent formability and ridging resistance, by specifying the heating temp. of a ferritic stainless steel slab, the schedule in hot rolling more particularly the draft distribution and rolling temp. of finish rolling concerning the production of a ferritic stainless steel sheet. CONSTITUTION:The slab of the ferritic stainless steel contg., by weight %, <0.10% C, <1.0% Si, <1.0% Mn, and 10-20% Cr, and consisting of the balance Fe is heated to 1,200-1,300 deg.C and is subjected to hot rough rolling to form a sheet material. The sheet is successively subjected to plural passes of finish rolling and the final pass at this time is executed at 15-35% draft. The entire hot rolling is ended by executing the final rolling at 800-850 deg.C end temp. After such hot rolled sheet is subjected to annealing for 4hr at 850 deg.C, the sheet is cold rolled and is worked to the final sheet thickness. Such sheet is subjected further to the finish annealing, by which the ferritic stainless steel sheet having the excellent formability and ridging resistance is produced. |
