Danieli & C. Officine Meccaniche S.p.a.

Cesare Galletti

Fausto Drigani

Estore Donini

Giacinto Dal Pan

Paolo Bobig

Roberto Millone

A coiling machine for hot rolled stock with a thickness of between 0.5 and more than 5 mm, arranged downstream of a rolling train and a shears assembly ( ). The coiling machine comprises a turntable assembly ( ) rotating around an axis of rotation ( ) orthogonal to the axis of feed of the rolled stock and lying on a plane substantially parallel to the plane of feed ( ) of the rolled stock wherein the turntable assembly ( ) supports two coiling mandrels ( ) arranged diametrically opposite each other and with an axis parallel to the axis of rotation ( ). The turntable assembly ( ) includes at least a first operating position wherein the first mandrel ( ) is in a position awaiting the leading end of the rolled stock and ready to being coiling, substantially cooperating with the plane of feed ( ) and at least a second operating position, rotated by 180&deg; with respect to the first operating position, wherein the first mandrel ( ) is in a position where the rolled stock is completely coiled and the coil ( ) is ready to be discharged and the second mandrel ( ) is in a position awaiting the leading end of the rolled stock and ready to begin coiling. At least a movable guide blade ( ) is arranged upstream of the turntable assembly ( ) and includes a first position of exclusion remote from the plane of feed ( ), a second working position cooperating from above with the plane of feed ( ) and a third position wherein it grips the rolled stock during the transition between the two aforesaid positions.

Coiling machine for hot rolled stock such as strip or sheet and relative coiling method

Rolling stand ( ) for plane products and method to control the planarity of said plane products, said rolling stand comprising a pair of working rolls ( ), a corresponding pair of back-up rolls ( ) and at least an intermediate roll ( ) located between one of said working rolls ( ) and a corresponding back-up roll ( ), axial translation means ( ) and bending means ( ) being associated with at least one of said working rolls ( ) to translate it axially and respectively bend it, crossing means ( ) being associated with said intermediate roll ( ) to arrange it with its longitudinal axis ( ) inclined, that is, rotated, with respect to the longitudinal axes ( ) of said working rolls ( ) and of said back-up rolls ( ).

Rolling stand for plane products and method to control the planarity of said products

Method to control the planarity of flat products rolled with a rolling stand ( ) having a pair of working rolls ( ), a corresponding pair of back-up rolls ( ) and at least an intermediate roll ( ) placed between one of said working rolls ( ) and a corresponding back-up roll ( ), axial translation means ( ) and first bending means ( ) associated with at least one of said working rolls ( ) to translate it axially (WR shifting) and respectively bend it (WR bending), crossing means ( ) associated with said intermediate roll ( ) to arrange it with its longitudinal axis ( ) inclined (IR crossing), that is, rotated on a horizontal plane, with respect to the longitudinal axes ( ) of said working rolls ( ) and of said back-up rolls ( ), and second bending means ( ) associated with said intermediate roll ( ) to bend it with respect to the horizontal plane (IR bending), said method providing a first static setting step, operating selectively at least on WR shifting and on IR crossing, and at least a second dynamic setting step, that is to say, during rolling, operating selectively at least on WR bending and IR bending.

Method for the static and dynamic control of the planarity of flat rolled products

A coiling machine for hot rolled stock with a thickness of between 0.5 and more than 5 mm, arranged downstream of a rolling train and a shears assembly (,). The coiling machine comprising a turntable assembly (,) rotating around an axis of rotation (,) orthogonal to the axis of feed of the rolled stock and lying on a plane substantially parallel to the plane of feed (,) of the rolled stock. The turntable assembly (,) supporting two coiling mandrels (,) each arranged diametrically opposite each other and with an axis parallel to the turntable axis of rotation (,). The turntable assembly (,) has at least a first operating position wherein the first mandrel (,) is in a position awaiting the leading end of the rolled stock and ready to begin coiling, substantially cooperating with the plane of feed (,) and at least a second operating position, rotated by 180&deg; with respect to the first operating position, wherein the first mandrel (,) is in a position where the rolled stock is completely coiled and the coil (,) is ready to be discharged and the second mandrel (,) is in a position awaiting the leading end of the rolled stock and ready to begin coiling. At least a movable guide blade (,) is arranged upstream of the turntable (,) and includes a first position of exclusion remote from the plane feed (,), a second working position cooperating from above with the plane of feed (,) and a third position wherein it grips the rolled stock during the transition between the two aforesaid positions.

Coiling machine for hot rolled stock such as strip or sheet

Method and device to control the axial position of slabs emerging from a continuous casting machine, providing to control the axial position of the slab (,) in correspondence with the inlet to the first rolling stand and to act in feedback on means to modify the correct position of the axis (,) of the slab (,) in a position located between the first rolling stand and the foot rolls (,) of the ingot mold (,) from which the slab (,) emerges, wherein alignment means operating inside the furnace (,) are employed to induce a controlled lateral displacement governed by the control of the axial position of the slab (,).

Method to control the axial position of slabs emerging from continuous casting and relative device

Carousel winding reel (,) for thin or very thin strip/sheet, up to 0.5 mm, hot rolled and leaving in a continuous strip from a rolling train at speeds of 20 meters per second and more, the reel (,) comprising a pair of mandrels (,) arranged with their respective axes parallel to each other (,) and associated with a structure (,) able to rotate around a longitudinal axis (,) substantially between the axes (,), the rotatable structure (,) including a front body side (,) and a rear body side (,), the mandrels (,) including alternatively a position of winding and a stand by position, the drive means of the mandrels are motors (,), the motors including a rotor (,) and stator (,), the body sides (,) including the seatings (,) of the main bearings (,) of the rotor (,), the stator (,) being connected to at least one body side by anti-torsion means (,).

Carousel winding reel

A shearing and coiling assembly for hot rolled stock with a thickness of between 0.5 and more than 5 mm, comprising a shearing unit (,) and a coiling machine (,) comprising a turntable assembly (,) rotating around an axis of rotation (,) orthogonal to the axis of feed of the rolled stock and lying on a plane substantially parallel to the plane of feed (,) of the rolled stock. The turntable assembly (,) supports two coiling mandrels (,) arranged diametrically opposite each other and with an axis parallel to the axis of rotation (,). The turntable assembly (,) includes at least a first operating position wherein the first mandrel (,) is in a position awaiting the leading end of the rolled stock and ready to begin coiling, substantially cooperating with the plane of feed (,) and at least a second operating position, rotated by 180&deg; with respect to the first operating position, wherein the first mandrel (,) is in a position where the rolled stock is completely coiled and the coil (,) is ready to be discharged and the second mandrel (,) is in a position awaiting the leading end of the rolled stock and ready to begin coiling. The shearing unit (,) can be moved between a working position in which it is aligned with the plane of feed (,) of the rolled stock, and an inactive position distant from the plane of feed (,).

Shearing and coiling assembly for hot rolled stock

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., the bearings comprising a revolving bearing with conical, truncated cone or barrel-shaped rollers arranged in an intermediate contact position between a lower sliding element, attached to the chock, and an upper sliding element solid with the relative organs to transmit the load, the top or the smaller base of the rollers facing the chock opposite the one with which they are associated, the rollers being disposed radially to define a circular section the center of which is defined by the vertical projection of the center of rotation of the relative back-up roll.

Sliding bearings for chocks in rolling mill stands with crossed

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 stand and acting on the intermediate positioning elements (18).

Device for the crossed displacement of rolling rolls

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 depending on the aligned and/or inclined position of the roll (10) in relation to its initial longitudinal axis (19), the engagement surfaces (29, 30) of the jaw means (15) being conformed as an arc of a circumference the centre of which (32) lies on the median plane of the relative rolling roll (10).

Device for the axial shifting of rolling rolls

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).

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Segrate S. Felice, Italy

Cesare Galletti