| 摘要 |
PROBLEM TO BE SOLVED: To omit a hot steel band annealing, acid pickling process and a cold rolling process by cutting or grinding the whole surface of front, rear faces of a rough rolled sheet bar from the surface to a given thickness or more. SOLUTION: A Cr contained steel slab 11 which contains Cr 5 wt.% or more by continuous casting is heated at a heating furnace 21 and is rough rolled at a hot rough rollers row 22 for making a sheet bar 12. Scale of the sheet bar 12 is completely eliminated by cutting the whole surface of the sheet bar 12 front, rear faces by 10μm or more with a sheet bar surface cutting device 23. A front tail end of the sheet bar 12 is cut by a crop shear 24 and a finish rolling is performed at a hot finish rolling rollers row 26 without applying a descaling. After it is cooled with a cooling device 27, a winding device 28 takes up the bar so as to obtain a hot rolled stainless steel band 13 of a thin scale. A cutting depth on the sheet bar 12 front, rear faces is preferable to be within 1 mm in view of a yielding loss, an abrasion of a moving blade and a stability.
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