| 摘要 |
PCT No. PCT/JP96/03714 Sec. 371 Date Aug. 12, 1997 Sec. 102(e) Date Aug. 12, 1997 PCT Filed Dec. 19, 1996 PCT Pub. No. WO97/23310 PCT Pub. Date Jul. 3, 1997A rolling method, and an apparatus therefor, capable of improving a fundamental unit of rolling rolls, dimensional accuracy and rolling stability, and having high productivity are described. The rolling method, and the apparatus therefor, reverse roll a to-be-rolled material having a dog bone-like shape and rough rolled by a single or plurality of breakdown mills BD, etc, by using an intermediate universal mill UR for carrying out X-shape rolling, a quick shift edger mill QE having a plurality of box calibers having different sizes, for carrying out edging rolling by quickly shifting one of the box calibers corresponding to a pass schedule, and a finish universal mill UF for carrying out H-shape rolling for raising flanges on both sides.
|
