公开(公告)号：US20220001429A1

公开(公告)日：2022-01-06

申请号：US17289923

申请日：2019-10-16

Applicant: JFE STEEL CORPORATION

Inventor： Takashi DOI ,  Shoji KASAI ,  Teruhiko TOBE

IPC: B21B37/68 ,  C21D9/56 ,  C21D8/12 ,  B21B39/08

Abstract: A bridle device and a method for producing a steel strip in which snaking of a steel strip that occurs during production of a high-silicon steel strip is suppressed. The bridle device includes a pair of upper and lower rotatable endless belts or a pair of upper and lower rotatable caterpillars configured to pinch a steel strip. The bridle device is movable or swingable in a steel strip width direction by using a steering mechanism. The bridle device further includes a rolling reduction mechanism configured to perform rolling reduction on a pinched portion of the steel strip by using the pair of upper and lower endless belts or the pair of upper and lower caterpillars. The steering mechanism moves or swings the bridle device in the steel strip width direction, and the rolling reduction mechanism performs rolling reduction on one of end portions in the steel strip width direction.

公开(公告)号：US20220008938A1

公开(公告)日：2022-01-13

申请号：US17288811

申请日：2019-08-13

Applicant: JFE STEEL CORPORATION

Inventor： Teruhiko TOBE ,  Takashi DOI ,  Shinji KOSEKI

IPC: B05B1/14 ,  C23C10/08

Abstract: A slit nozzle having a double-tube structure and a method for manufacturing a high-silicon steel strip having a small variation in Si concentration depending on the position in the width direction of the steel strip. The slit nozzle has a double-tube structure, in which a flow-control plate which closes a gap between an inner tube and an outer tube is disposed between an open end of the inner tube and an end of a delivery port, and in which an opening is formed in a plane in which the flow-control plate is disposed only in a range of the flow-control plate of 27.5° or more and 332.5° or less in terms of a central angle with respect to a reference line L1 passing through the axis of the outer tube and the central position in the width direction of the delivery port.