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OwnerKenichi Yasuda, Yukio Hirama +4inventors
InventorsKenichi Yasuda, Yukio Hirama, Kenjiro Narita, Koji Satou, Yoshio Takakura, Hiroyuki Shiraiwa
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To eliminate a vertically asymmetrical deflection, a rolling mill comprises a device for measuring horizontal deflections of upper and lower work rolls 2, 3 during rolling, a device for comparing values measured on the upper and lower sides and calculating the difference therebetween, and a horizontal deflection controller four determining whether the difference exceeds a predetermined range or not and imparting a horizontal bending to at least one of the work rolls. To eliminate a transversely asymmetrical deflection, a rolling mill comprises a device for measuring horizontal deflections of at least one of the work rolls at axially spaced positions during rolling, a device for comparing values measured on at the axially spaced positions and calculating the difference therebetween, and a horizontal deflection controller for determining whether the difference exceeds a predetermined range or not and imparting a horizontal bending to the one work roll at least one of the axially spaced positions. This prevents an adverse effect by the work rolls being horizontally deflected in a vertically or transversely asymmetrical way, reduces the diameter of the work rolls, and increases the allowable rolling load. Stable rolling of high-quality strips with good shape or flatness is thus achieved.
A rolling method for use with a rolling mill comprising an upper and a lower work roll, upper and lower backup rolls, horizontal supporting means for respectively supporting said upper and lower work rolls in the horizontal direction, and horizontal bending means for respectively imparting a horizontal bending to said upper and lower work rolls, wherein:
A rolling method for use with a rolling mill comprising an upper and a lower work roll, upper and lower backup rolls, horizontal supporting means for respectively supporting said upper and lower work rolls in a horizontal direction, and horizontal bending means for respectively imparting a horizontal bending to said upper and lower work rolls, wherein:
A rolling method for use with a rolling mill comprising an upper and a lower work roll, upper and lower backup rolls, horizontal supporting means for respectively supporting said upper and lower work rolls in a horizontal direction, and horizontal bending means for respectively imparting a horizontal bending to said upper and lower work rolls, said upper and lower work rolls being disposed to be offset with respect to said upper and lower backup rolls in a direction of a pass line, wherein:
A rolling mill comprising an upper and a lower work roll, upper and lower backup rolls, horizontal supporting means for respectively supporting said upper and lower work rolls in a horizontal direction, and horizontal bending means for respectively imparting a horizontal bending to said an upper and a lower work roll, wherein:
A rolling mill comprising an upper and a lower work rolls, upper and lower backup rolls, horizontal supporting means for respectively supporting said upper and lower work rolls in a horizontal direction, and horizontal bending means for respectively imparting a horizontal bending to said an upper and a lower work roll, wherein:
A rolling mill comprising an upper and a lower work roll, upper and lower backup rolls, horizontal supporting means for respectively supporting said upper and lower work rolls in a horizontal direction, and horizontal bending means for respectively imparting a horizontal bending to said an upper and a lower work rolls, said upper and lower work rolls being disposed to be offset with respect to said upper and lower backup rolls in a direction of a pass line, wherein:
Dependencies are inferred from the claim text.