Primetals Technologies Japan, Ltd.

Taroh Satoh

Hideaki Furumoto

Shinya Kanemori

Akira Sako

Toru Takeguchi

Tadashi Hiura

Jiro Hasai

Hideki Tonaka

There are provided a work-side position measurement device and a drive-side position measurement device for directly measuring positions of roll chocks in a rolling direction, and positions of upper and lower working rolls and upper and lower backup rolls in the rolling direction are adjusted to zero point or predetermined positions. Alternatively, a change caused in the strip wedge due to a minute crossing of the axes of working rolls and backup rolls is calculated, and the quantities of leveling of a work-side rolling reduction cylinder device and a drive-side rolling reduction cylinder device are adjusted to make the strip edge equal to or smaller than a predetermined value. Accordingly, the bilateral asymmetry (strip wedge) of the thickness distribution of a rolled material is easily adjusted even in the event that the positions of the roll chocks in the rolling direction are changed due to wear on various components.

Rolling mill and rolling mill adjustment method

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Hiroshima, Japan

Taroh Satoh