Other

Ihi Corporation

Nippon Kokan Kabushiki Kaisha

Ishikawajima-harima Jukogyo Kabushiki Kaisha

Ihi Metaltech Co., Ltd.

Hajime Ishii

Hisashi Honjou

Satoshi Murata

Sadakazu Masuda

Kenichi Ide

Masaaki Yamamoto

Kazuyuki Sato

Hiroyuki Otsuka

Yasuhiro Fujii

Nobuhiro Tazoe

Hiroshi Kuwamoto

Yoichi Motoyashiki

Toshio Iwanami

Toru Minote

Shigeki Narushima

Yasushi Dodo

Shinji Okazaki

Masahiro Kuchi

Masao Mikami

Shuichi Yamashina

Takumasa Terauchi

Kinichi Higuchi

Takashi Nishii

Kanji Kizaki

Tsukasa Matsuzawa

Shigeru Tsuzuki

Shirou Osada

Tsuyoshi Sugiyasu

Noboru Taguchi

The present invention relates to the providing of a rolling mill that makes it possible to more accurately control the shape of a plate material than has hitherto been possible, and to a rolling method, and is a rolling mill that rolls a plate material using vertical work rolls, and that includes: a coolant jet spray unit that has a plurality of nozzles that are arranged at predetermined intervals in the direction of the rotation axis of the work rolls, and that sprays jets of coolant from the respective nozzles onto the work rolls; a roll temperature estimation unit that estimates a mean temperature of the work rolls; a coolant temperature detection unit that detects a temperature of the coolant; a shape detection unit that detects the shape in the width direction of the rolled plate material; a shape deviation calculation unit that calculates an amount of deviation between a plate material shape detected by the shape detection unit and a target shape; and a shape control unit that controls the shape of the plate material by controlling the spray quantity and/or temperature of the coolant which is sprayed from the coolant jet spray unit based on a difference between the mean temperature of the work rolls and the temperature of the coolant, and on the amount of deviation between the plate material shape and the target shape.

Rolling mill and rolling method

A conveying device includes a plurality of conveying rollers supported in parallel at predetermined intervals, and conveys a workpiece to a heat-retaining/heating furnace from a rolling mill by the conveying rollers. The conveying device includes an impact prediction data collecting unit and a control unit. The impact prediction data collecting unit acquires data on the upstream of the heat-retaining/heating furnace. The data is used to predict the magnitude of an impact applied to rollers in the furnace, which are positioned in the heat-retaining/heating furnace, of the conveying rollers by the workpiece. The control unit predicts the magnitude of an impact from the data, which is acquired by the impact prediction data collecting unit, and adjusts the conveying speed of the workpiece in the heat-retaining/heating furnace according to the magnitude of the impact.

Conveying device, hot rolling apparatus, conveying method, and hot rolling method

According to an apparatus and a method for manufacturing a hot-rolled steel plate, a roughing process for reducing a thickness of a continuously cast slab is performed to obtain a sheet bar, and a finishing rolling process for rolling the sheet bar is effected to produce a hot-rolled steel plate having a predetermined plate thickness. After cooling down, the hot-rolled steel plate is then wound. A pair of dies each of which has a tapered portion on an input side and a parallel portion on an output side are used in at least part of the roughing process. Further, before performing plate thickness pressing to a material in a plate thickness direction by using the dies , at least one of a front end and a rear end of the material is pressed in a widthwise direction to be pre-formed.

Device and method for manufacturing hot-rolled sheet steel and device and method for sheet thickness pressing used for the device and method

A high-quality hot rolled steel sheet is manufactured with a high production efficiency and a low cost, from a long, hot slab, using a combination of continuous casting facilities and a plate reduction press machine.

Apparatus and methods for manufacturing hot rolled steel sheets

In a rolling mill of the type in which horizontal pushing forces are exerted to a work roll exerted with a rolling force so as to bend the work roll, thereby controlling the flatness of a strip being rolled, a method and apparatus for controlling rolling correction in the rolling mill for eliminating variations in rolling load due to the horizontal pushing forces.

Method and apparatus for controlling rolling correction in rolling mill

Growing community of inventors

Tokyo, Japan

Hajime Ishii