Tandem rolling mill facility and rolling method using the same
AssigneeHitachi, Ltd.
InventorsToru Nakayama, Michimasa Takagi
Life of this patent
Estimating the term…
Abstract
In a tandem rolling mill facility and a rolling method using the tandem rolling mill facility, stable rolling is performed with suppressing deflection of working rolls and without fluctuation of working roll bearing boxes. Axes of working rolls 1 are offset toward a side opposite to a side of larger tension between tensions acting on a rolled material at an inlet side and an outlet side with respect to axes of intermediate rolls, and a hydraulic cylinder for pushing a working roll bearing box toward the same side as the offset direction is contained in a block.
Claims16
A tandem rolling mill facility comprising a rolling mill line aligning a plurality of rolling mills in a pass direction of a rolled material, said rolling mill having top and bottom working rolls and top and bottom supporting rolls arranged on and under said working rolls, wherein
- at least one rolling mill placed in the final stand among said plurality of rolling mills is a working roll offset rolling mill in which said top and said bottom working rolls are used as driving rolls, and axes of said top and said bottom working rolls are arranged so as to be offset to a rolled material outlet side opposite to a side of larger tension acting on the rolled material with respect to axes of said top and said bottom supporting rolls.
A tandem rolling mill facility comprising a rolling mill line aligning a plurality of rolling mills in a pass direction of a rolled material, said rolling mill having top and bottom working rolls and top and bottom supporting rolls arranged on and under said working rolls, wherein
- at least one rolling mill placed in a final stand among said plurality of rolling mills is a rolling mill in which said top and said bottom working rolls are used as driving rolls, and axes of said top and said bottom working rolls are arranged so as to be offset to an outlet side of the rolled material with respect to axes of said top and bottom supporting rolls, and the other rolling mills are rolling mills in which said top and bottom working rolls are used as driving rolls, and axes of said top and bottom working rolls of the other rolling mills are arranged so as to be offset to an inlet side of the rolled material with respect to axes of said top and said bottom supporting rolls.
A tandem rolling mill facility comprising a rolling mill line aligning a plurality of rolling mills in a pass direction of a rolled material, said rolling mills having respective top and bottom working rolls and top and bottom supporting rolls arranged on and under said working rolls, wherein
- one rolling mill placed in the final stand among said plurality of rolling mills is a working roll offset rolling mill in which said top and bottom working rolls are used as driving rolls, and axes of said top and bottom working rolls are arranged so as to be offset to a rolled material outlet side opposite to a side of larger tension action on the rolled material with respect to axes of said top and said bottom supporting rolls, and
- wherein means for preventing axial end portions of said top and bottom working rolls from being moved in the rolling direction are provided.
A rolling method using a tandem rolling mill facility which comprises a plurality of rolling mill stands which each have a pair of top and bottom working rolls and a pair of supporting rolls for the working rolls, comprising driving said working rolls at a final one of said rolling mill stands and also offsetting the working rolls so that the axes of said top and bottom working rolls at said final stand are arranged so as to be offset to a rolled material outlet side opposite to a side of larger tension acting on the rolled material with respect to axes of the respective top and bottom supporting rolls at said final rolling mill stand.
Dependencies are inferred from the claim text.