Abstract: Disclosed is a rolling method for rolling a strip including: rolling the strip by a pair of working rolls; transmitting a rolling force to the working rolls by a pair of support rolls; holding each of the working rolls by a pair of side support rollers; supporting each side support roller by two rows formed by rollers; supporting each row formed by the rollers, by a bearing support carrying rollers, the bearing support mounted pivotally on an articulation axis. The dimensions of a first interspace between the side support roller and the support roll and a second interspace between the strip and the assembly consisting of side support roller and bearing support vary in the course of the rolling. The method includes adjusting the dimension separating the axis of the support roll and the axis of the side support roller defining the first interspace.

Abstract: The object of this invention is a rolling mill stand with one pair of work rolls for a rolling metal strip, with intermediate rolls and back-up rolls. Here, the work rolls are supported at the sides by supporting systems, where a supporting force directed towards the work roll can be applied to each supporting system by means of a force generating device and the supporting system can be moved from an idle position into an operating position. According to the invention, the two work rolls can be replaced by work rolls with a different diameter, where only the supporting systems have to be replaced by supporting systems with supporting rolls of a different diameter, but the intermediate rolls and back-up rolls need not be changed.

Abstract: A spraying method and device for a plant for rolling a strip, the plant having at least one rolling stand. The device includes: a pair of working rolls between which the strip runs; a plane perpendicular to the running direction of the strip; at least one pair of supporting rolls for the working rolls; two pairs of bearing rolls, each of the pairs having the rolls thereof substantially symmetrically arranged on either side of the working rolls in a plane substantially parallel to the strip so as to transfer, to the working rolls, a force for maintaining the working rolls in a predetermined position relative to the supporting roll; a support for the bearing rolls in the form of two rows including a plurality of bearing rollers mounted side by side; one or more nozzle systems for spraying at least a portion of the strip and at least a portion of the rolls.

Abstract: A rolling mill, which can use work rolls of a smaller diameter for rolling a hard material and a thin strip material, and can decrease edge drops and improve surface gloss, is provided. For this purpose, a rolling mill, which includes upper and lower work rolls (2) as a pair for rolling a strip (1), upper and lower intermediate rolls (3) as a pair for supporting the upper and lower work rolls as the pair, and upper and lower back-up rolls (4) as a pair for supporting the upper and lower intermediate rolls as the pair, is configured such that the upper and lower work rolls as the pair are supported by a plurality of supporting bearings (8a to 8f and 9a to 9f) arranged vertically zigzag on an entry side in a rolling direction, and a plurality of supporting bearings (10a to 10f and 11a to 11f) arranged vertically zigzag on an delivery side in the rolling direction, at positions outward of a rollable strip width, and the plurality of supporting bearings lap over each other vertically.

Abstract: The object is to eliminate the difference in offset of work rolls at the upper and lower and left and right of the rolling mill occurring in the kiss roll state of the zero point adjustment work before rolling or during rolling and eliminate the problem of warping of the flat products or meander or camber due to the thrust force acting between the work rolls and backup rolls.

Abstract: The invention relates to a process for increasing the range of production of an installation for cold rolling of metallic strip, consisting of at least two rolling stands (L1, L2) operating in tandem. According to the invention, at least one (L1) of the rolling stands is equipped with means of converting the stand configuration, while keeping the same means (15, 16, 3, 3?) of applying the rolling force, in order to have at least two configurations available, each corresponding to one production range, and the configuration of said convertible stand L1 is selected to match the data of the product (M) to be rolled, thus allowing the production range to be increased.

Abstract: The invention relates to a process for increasing the range of production of an installation for cold rolling of metallic strip, consisting of at least two rolling stands operating in tandem. According to the invention, at least one of the rolling stands is equipped with means of converting the stand configuration, while keeping the same means of applying the rolling force, in order to have at least two configurations available, each corresponding to one production range, and the configuration of said convertible stand is selected to match the data of the product (M) to be rolled, thus allowing the production range to be increased.

Abstract: The invention relates to a method for changing the configuration of a rolling mill including at least two working rolls and two back-up rolls, means for applying a clamping load and two sets of hydraulic cambering cylinders, at least of both working rolls. According to the invention, at least two types of working rolls (C1, C2) are realized having, respectively a great diameter and a small diameter and the quarto configuration rolling mill is switched to a sexto configuration and conversely, the rolls with great diameter (C1, C?1) being used as working rolls in the quarto configuration and, in the sexto configuration, as intermediate rolls between each back-up roll and a roll with small diameter (C2, C?2) used as a working roll.

Abstract: The invention relates to a roll stand comprising a pair of work rolls 1, 2 for rolling a metal strip B, comprising back-up rolls 8, 9, 10, 11 which provide lateral support to their respectively allocated work rolls 1, 2, with support force directed towards the work rolls 1, 2 being able to be applied to said back-up rolls by means of a force generation device, and comprising support rolls or intermediate rolls 3, 4 which are borne by a chock which can be slid into the roll stand W1, W2 in the direction of the longitudinal axis of said chock 7, and wherein said chock can be withdrawn from said roll stand, with each support roll or intermediate roll supporting an associated work roll 1, 2 in a direction which is essentially perpendicular to the direction of movement of the metal strip B.

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.

Abstract: A system for continuous and real-time detection of skidding conditions in a rolling mill in which continuous monitoring of conditions which could lead to skidding and analysis of the monitored conditions is effected and wherein an alarm signal is produced when conditions exceed a threshold and indicate skidding. The system provides for immediate correction of skidding conditions to safeguard the machinery and mill equipment against damage.

Abstract: The invention intends to always maintain a distance between a hydrostatic pressure bearing and a roll even in a transient state before and after the start of rolling, thereby sufficiently and surely preventing damage of those components upon contact with each other, and to prevent a lowering of yield. In a plate rolling mill comprising upper and lower work rolls, and hydrostatic pressure bearings for supporting barrel portions of idler rolls in a non-contact manner with fluid pressure substantially along the horizontal direction, the idler rolls supporting the work rolls substantially along the horizontal direction, gap restraining rolls are provided to prevent gaps between the hydrostatic pressure bearings and the idler rolls from becoming lower than a predetermined value.

Abstract: The invention intends to always maintain a distance between a hydrostatic pressure bearing and a roll even in a transient state before and after the start of rolling, thereby sufficiently and surely preventing damage of those components upon contact with each other, and to prevent a lowering of yield. In a plate rolling mill comprising upper and lower work rolls, and hydrostatic pressure bearings for supporting barrel portions of idler rolls in a non-contact manner with fluid pressure substantially along the horizontal direction, the idler rolls supporting the work rolls substantially along the horizontal direction, gap restraining rolls are provided to prevent gaps between the hydrostatic pressure bearings and the idler rolls from becoming lower than a predetermined value.

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.