Abstract: Sliding bearings for chocks (11) in back-up rolls (12) under load, the back-up rolls (12) cooperating with the respective working rolls (112) and being able to perform crossed displacement in a four-high rolling mill stand for the hot rolling of sheet and/or large plate, the chocks (11) cooperating on the outside with organs to transmit the load from the rolls to the stationary housing (21) and organs to regulate the gap between the working rolls (112), these organs comprising millscrews, hydraulic capsules (13), spacers, etc.

Abstract: Compact continuous casting line for thin slabs, the continuous casting line comprising at least a curved segment and a subsequent straight segment, the casting line comprising at least an ingot mould (12) connected at the outlet with an extraction and possible soft reduction assembly (13) associated at the end with at least a drawing assembly (14) consisting of pinch rolls (15), the drawing assembly (14) being followed by at least a shearing assembly (16), an extractor device (17) to extract the dummy bar and by a possible temperature-restoration furnace (21, 121), there also being included at least a descaling device (20) using water, the descaling device (20) being arranged upstream of the shearing assembly (16), and the temperature-restoration furnace (21, 121) being arranged in a position near the outlet of the shearing assembly (16).

Abstract: System to control the surface profile of the back-up rolls in four-high rolling stands (11) to produce flat products (14), the four-high rolling stand (11) comprising working rolls (12) and back-up rolls, wherein each back-up roll (13) comprises deforming elements (18) consisting of means made of magnetostrictive material (19, 119) on which coils (20, 120) are directly wound and connected with autonomous means of electric supply to generate a magnetic field, the system comprising a control and regulation unit (24), connected with at least means (25) to control the planarity and/or thickness of the rolled product (14) leaving the rolling stand (11), for the controlled activation and feed of each of the coils generating the magnetic field (20, 120). Back-up roll for four-high rolling stands comprising means made of magnetostrictive material to achieve the control system as described above.

Abstract: Method and device to shear slabs arriving from a continuous casting plant, where the slabs (13) leaving the continuous casting plant are sent to be sheared to size so as to obtain sections which are speeded up and sent for rolling, there being included, immediately upstream of the shearing assembly, a pinch roll assembly comprising at least two opposite rolls (14a, 14b), the shearing assembly comprising shearing elements (11, 12) coordinated and arranged on opposite sides with respect to the feeding plane of the slabs (13) during the shearing step, the shearing elements (11, 12) acting on the leading end (13a) of the slab (13) in such a way as to cause the leading end (13a) to rise up in a controlled manner by means of lifting the lower shearing element (12) to a height which is at least more than the feeding plane of the slab (13), the opposite rolls (14a, 14b) of the pinch roll assembly arranged immediately upstream of the shearing assembly (10) being maintained closed in contact with the slabs (13) during

Abstract: Method and relative line for the continuous rolling of plate and/or strip, starting from at least two lines for the continuous casting of thin slabs (11) of between 60 and 120 mm thick, the pre-slabs being continuously cast within a limited range of thicknesses of between 70 and 140 mm and at a speed of up to 6+7 meters per minute, the pre-slabs then being transformed into slabs by a process of soft-reduction (112) which reduces the thickness of the individual pre-slab by 5 to 40 mm so as to obtain a range of slabs with a defined thickness using the the same crystallizer, and the rolled product (111) now in a strip leaving the roughing train (17) being sent to the finishing train (20), the leading end of the strip as it arrives being connected to the trailing end of the strip being rolled so as to form a substantially continuous product fed to the finishing train (20), the connection being made by a welding machine (24) positioned upstream of the finishing train (20), the end-of-rolling temperature being betw

Abstract: Device for the crossing of rolling rolls, whether they be working rolls (13) and/or back-up rolls (12), in a four-high rolling mill stand (10) for plate and/or strip, the device including an upper rolling block (11a) and a lower rolling block (11b), the working rolls (13) and the back-up rolls (12) being supported at the ends by respective supporting chocks (14) associated with stationary housing means (15) defining an inner space to house the chocks (14), cooperating with at least one side of at least one chock (14) there is at least one intermediate positioning element (18) associated with adjustment and positioning means (16), which comprise at least drive means (23) associated with bar means (22) solid with eccentric means (20) by means of arm means (21), the adjustment and positioning means (16) being located in a position outside the stationary housing (15), the eccentric means (20) being associated with rod means (24) which can be moved on their axis and at right angles to the vertical plane of the sta

Abstract: Compensation device for chocks in four-high rolling mill stands (13) with pair crossing of the rolls (12,112,14,114), the device (10) cooperating with the opposed sides of at least one chock (11) of at least one back-up roll (12, 14), the rolling mill stand (13) comprising a stationary housing (16) and means (21) to transmit a load force ("P") acting substantially on the longitudinal median plane of the stand (13) and contrasting the force of thrust ("S"), the transmission means (21) being located between the stationary housing (16) and the relative chock (11), the rolls (12, 14) including at least a crossover position wherein the load force ("P") defines an eccentricity ("e") with respect to the force of thrust ("S"), the device comprising actuator means (15,115) associated with at least one face of at least one chock (11) and exerting on the chock (11) a push-and-pull action associated functionally with the actual crossover position of the relative roll (12) in relation to the longitudinal median plane pass

Abstract: Method and device for the lateral compacting of slabs, which is employed in a rolling line at least upstream of the finishing rolling mill stands as an alternative to, or in cooperation with, rolling mill stands with vertical rolls, employing two counter-opposed compacting dies (11) supported by relative die-holder bodies (13) and associated with relative lateral edges of the slab (12) being rolled, each compacting die (11) cooperating with the relative actuation system comprising a crankshaft (15) and one element having the function of a connecting rod (18) positioned with its axis (30) on the same plane as, and perpendicular to, the axis of feed of the slab (12) and having one of its ends rotatably associated with the crankshaft (15) and its other end rotatably associated with the relative die-holder body (13), including two connecting rod elements associated with each crankshaft and with each die-holder body, at least one of the two connecting rod elements varying its length during each working cycle, said

Abstract: Device for the crossed displacement of rolling rolls (10), whether they be working rolls and/or back-up rolls, in a rolling mill stand (11) for plate and/or strip, the rolls (10) being supported at the ends by respective supporting chocks (12) associated to stationary housing (13), the chocks including an inlet side and an outlet side, the chocks (12) on one roll (10) being associated with the device to position the rolls (10) in a crossed position, cooperating with at least one of the inlet and outlet sides of the chocks (12) of at least one roll (10), there also being a front cam (16), whose axis lies on a substantially parallel plane to the rolling plane, associated with drive shafts (15), the front cam (16) comprising at least two substantially cylindrical coaxial elements (17, 18), one connected to the drive shaft (15) and the other cooperating with the chock (12), the front cam (16) including front surfaces of reciprocal connection (19, 20) defining inclined radial sliding planes and at least two princi

Abstract: Device to move the rolls in a four-high rolling stand to roll sheet and wide plate, the device comprising jaws (12, 13) cooperating with the chock (14) of the respective lower (11) and upper (11a) roll, the jaws (12, 13) presenting at least a closed position in which they make the chock (14) solid to the system of axial travelling (23, 24) of the rolls (11, 11a) and an open position in which they release the rolls (11, 11a), the jaws (12, 13) cooperating with respective mating seatings defined laterally to the relative chock (14), each of the jaws (12, 13) being respectively connected to the system of axial travelling (23, 24) by an articulated parallelogram unit able to move on a plane which is substantially at right angles to the rolling plane, the articulated parallelogram unit comprising paired rods, respectively (17,117;18,118), pinned at the front to the respective jaws (12, 13) and associated at the rear with the axial travelling system (23, 24) by an articulation (19) with at least two axes of rotatio

Abstract: Method and device to guide the strip between the stands in a rolling mill finishing train to roll thin strips of a final thickness in the order of 1.2 mm and less, the inter-stand device including at least a guide device arranged at the outlet of the upstream stand (11a), a looper unit (15) comprising at least a looper roller (20) and a guide device arranged at the inlet to the downstream stand (11b), the looper roller (20) having at least a lowered position at the step before the leading end of the strip enters and a plurality of raised positions, while the strip is passing through, to form the desired loop, the looper roller (20), at least when it is in the lowered position before the strip enters, being made to rotate at a tangential speed at least equal to the speed at which the strip is fed between the stands.

Abstract: Device for the crossed displacement of rolling rolls, whether they be back-up rolls (11) and/or working rolls (12), in a four-high rolling mill stand for sheet and/or strip, a back-up roll (11) and the relative working roll (12) defining a rolling block, with a stationary housing (14) having an inner chamber (26) to house and position the chocks (13) supporting the rolls (11, 12), in cooperation with at least one side of at least one chock (13) there being an intermediate positioning element (15) which has its outer lateral surface (18) facing towards the vertical wall of the inner chamber (26) of the stationary housing (14), the outer lateral surface (18) being a double inclined plane (18a, 18b) inversely orientated in a vertical direction, each inversely orientated part (18a, 18b) of the double inclined plane cooperating with a relative sliding displacement element (21) having inclined plane front surfaces (21a) mating with the double inclined plane surface (18) and sliding surfaces (27) cooperating with th

Abstract: Block to provide curvature and balancing, which is suitable to impart an "IN" or "OUT" pre-curvature to processing rolls (11) of a four-high rolling mill stand (12) comprising a pair of processing rolls, lower (11a) and upper (11b) rolls respectively, each of which cooperates with a relative back-up roll (13a, 13b), the processing rolls (11a, 11b) and back-up rolls (13a, 13b) cooperating at their two ends with respective chocks (15a, 15b) and (16a, 16b) and relative bearings, the block comprising at least one lower rib (18a, 118a) and one upper rib (18b, 118b) including on their respective inner surfaces curvature jack means (20, 120) cooperating with the opposite surfaces of the chocks (15) of the processing rolls (11), supporting jacks (14) being included and cooperating with the chocks (16a, 16b) of the back-up rolls (13a, 13b), at least one rib (18) including on its outer surface compensation jack means (21, 121) which are actuated when an "OUT" pre-curvature is imparted to at least one processing roll (1

Abstract: Heating and/or temperature-maintaining furnace (11) for slabs (35), which includes lateral intake (12a) and outlet (12b) roller conveyors the axis of which is at a right angle to the axis of movement of the slabs (35) within the furnace (11), the roller conveyors (12a-12b) consisting of a plurality of roller-bearing bogies (13) able to move at a right angle to the axis of the roller conveyors (12a-12b), the roller-bearing bogies (13) having a first maintenance/replacement position (13a) outside the furnace (11) and a second working position (13b) in which they cooperate with the inside of the furnace (11), means being also included for the movement of the slabs (35) in the furnace (11), the rollers (10) being supported at both their ends on the roller-bearing bogies (13) by supporting means (19) and being driven by appropriate motor means (21), the supporting means (19) and motor means (21) being located outside the furnace (11) when the roller-bearing bogies (13) is brought to its second working position (13

Abstract: Furnace for coils installed in a rolling line for wide plate or sheet in an intermediate position between the roughing train and the finishing train, the furnace including at least an inlet (25) and at least an outlet (26) respectively associated with at least a feeding way (12a) and at least a discharge way (12b) for the coils (11), the furnace being defined inside by a plurality of positioning stations (14) defining a substantially central transit channel (15) cooperating at the lower part with means (24) to lift and move the coils (11) step by step between the positioning stations (14), each of which positioning stations (14) comprising support means (118), the support means (118) of at least a desired number of positioning stations (14) located towards the outlet (26) of the furnace (10) including at least a first lowered working position (18a) where the lifting and moving means (24) cooperate with the coils (11) and at least a second raised working position (18b) where the coils (11) are in a position of

Abstract: Device for the axial shifting of rolling rolls in a rolling mill stand of a four-high type for the production of strip and/or plate, the stand being equipped with means for the reciprocal cross-over displacement of the processing rolls (10) on a plane parallel to the rolling plane, each roll (10) being borne on relative chocks (11) associated with stationary housings (12), a shifting jack (24) being included and being anchored at one end to a stationary housing (12) and at the other end to an erection element (31), jaw means (15) being included for the temporary clamping of the erection element (31) to a chock (11), the engagement surfaces of the jaw means (15) cooperating in the engagement position (15a) with engagement means included at least on the sides of the chock (11), these latter engagement means being conformed as a sliding element (28) having at least a first position and a second position in relation to the engagement surfaces (29, 30) of the jaw means (15), these first and second positions depend

Abstract: Device to replace the rolling rolls for use in a four-high rolling stand to roll sheet and/or wide plate, the rolls (11, 12) being supported by chocks (13) and cooperating axially with connecting liners (16) associated with the spindles (15) connected to the drive means, the device comprising a support and travel unit (28) with a first inactive position (28a) and a second active position (28b) of temporal support and maintenance in position at least of the liner elements (16), the travel and support unit (28) comprising a plate (20) associated with lifting means (19) and including in a substantially central position an aperture (21) to receive the liner (16) associated with the lower roll (12), and at the upper end, a positioning hollow (22) which cooperates, when the travel and support unit (28) is in its active position (28b), with the liner (16) associated with the upper roll (11).

Abstract: Device for the crossed displacement of rolling rolls, whether they be processing rolls (12) and/or back-up rolls (13), in a rolling mill stand (10) to produce plate and/or strip, the device including an upper rolling block (11a) and a lower rolling block (11b), the processing rolls (12) and back-up rolls (13) cooperating at the ends with respective supporting chocks (14), which in turn cooperate with respective stationary housing 15) in cooperation with at least one side of at least one chock (14) with at least one means of motion transmission (20) comprising guide and positioning cradle means (18), actuation means (24) and motor means (25) with the motor means (25) governed by a control unit (26).

Abstract: Device for the axial clamping/release of chocks (15) of working rolls (14) on a rolling mill stand, the rolling mill stand including an actuation side (10a-FIG. 1) and a working side (10b-FIG.

Abstract: Line to produce strip and/or sheet or a combined line for strip/sheet, starting from at least one plant for the continuous casting of thin or medium slabs, the continuous casting plant comprising in sequence a continuous casting machine (12), at least one assembly (13) for shearing to size, a temperature restoration system, a rolling train (17-117) and a possible assembly (19) for the cooling of strip/sheet. A device to accelerate the speed of feed of the slabs is included downstream of the assembly (13) for shearing to size. The temperature-restoration system includes an induction furnace (14) with at least one working frequency to heat the surface and edges of the slabs, the induction furnace (14) being followed by a low-speed descaler (115) and by a tunnel furnace (16). An emergency shears (24) and high-speed descaler (15) is included between the tunnel furnace (16) and the rolling train (17-117).