US 2001/0018840 A1 · Strip rolling mill and strip rolling method

Abstract

To preferably roll a hard material or an ultra thin material by more reliably supporting small diameter work rolls even under a transient condition such as when starting a rolling operation or when finishing a rolling operation, undriven both ends support rolls 9, 10, 11 and 12 are provided on outer sides of a width along which a maximum sheet width of strip passes on a barrel portion of the work roll 3, to be opposed to each other at an entry side and a delivery side of respective end portions to thereby press and support the work roll. Further, hydrostatic bearings 21 and 23 are installed at central portions of both side barrels of the work roll 3, and fluid such as oil is supplied from fluid pressure supply ports 25 and 26 to the bearing portions to thereby float up the work rolls 3 by forming gaps between the hydrostatic bearings 21 and 23 and the work roll 3 and support the work roll 3 in horizontal direction in noncontact. By changing supply pressure of the fluid supplied to the hydrostatic bearings 21 and 23, a proper float up amount and a support force can be set or controlled.

Claims10

Dependent claims

A strip rolling mill comprising:

at least a pair of upper and lower work rolls for rolling strip;
at least a pair of backup rolls for supporting the work rolls in an up and down direction and providing a rolling drive force thereto;
at least pairs of both ends support rolls opposed to each other in a horizontal direction for pressing and sandwiching both end portions of the work rolls on outer sides of a width along which a maximum sheet width of the strip passes on barrel portions of the work rolls;
and
hydrostatic bearings for supporting, by hydraulic pressure, at least either one of an entry side and a delivery side of centers of the barrel portions of the work rolls substantially in a horizontal direction.

2 more elements

A strip rolling mill comprising:

at least a pair of upper and lower work rolls for rolling strip;
at least a pair of backup rolls for supporting the work rolls in an up and down direction and providing a rolling drive force thereto;
at least pairs of both ends support rolls opposed to each other in a horizontal direction for pressing and sandwiching both end portions of the work rolls on outer sides of a width along which a maximum sheet width of the strip passes on barrel portions of the work rolls;
and
hydrostatic bearings for supporting, by hydraulic pressure via at least one or more of idle rolls, at least either one of an entry side and a delivery side of centers of the barrel portions of the work rolls substantially in a horizontal direction.

2 more elements

Dependencies are inferred from the claim text.

Strip rolling mill and strip rolling method

Life of this patent

Strip rolling mill and strip rolling method

Life of this patent

Abstract

Claims10