Abstract: The invention relates to a method for thermal control of the profile of a roll in a mill by spraying, over a cooled zone (4) of the roll (1), a series of jets of fluid (J), each forming an oblong impact surface (S).

Abstract: A roll mill comprising a retaining stand with two distant stanchions (1, 1b), at least two working rolls (2, 2′) each rotating respectively in two chocks, and means for applying bending loads to each end of both working rolls, said means comprising, for both chocks (4, 4′), two sets of, respectively, positive and negative bending jacks.

Abstract: A band product accumulation unit including a mechanism for controlling the running of a band along a longitudinal direction, a fixed frame, a wrap-around carriage which is moveable on a track between a return position of minimum accumulation length and an out position of maximum accumulation length, wherein movement towards the out position increases a length while movement towards the return position decreases the length, the band being adapted to pass over at least one return member mounted on the wrap-around carriage so as to form at least an out portion and at least a return portion and defined by at least two spaced levels, a plurality of intermediate supporting members arranged along the track, each comprising at least one separating arm extending horizontally on at least one intermediate level disposed between two running levels of the band, each separating arm being fixed to a shaft which is pivotal about a vertical axis with respect to the fixed frame, a mechanism for controling the pivoting of each

Abstract: This invention relates to a roll mill comprising hydraulic clamping devices acting on at least one roll (2) with adjustable level, and devices for measuring the position of the adjustable roll, comprising, at each end (42) of the roll, a measuring rod (4) going through a tubular sleeve (5) with a certain clearance for insulating the pressure chamber (33). According to the invention, the clamping jacks (3) are single-action and the insulating sleeve (5) connected to each jack is extended by a sheath (53) going through the roll standard of the stand up to an external end on which rest devices for restoring the jack (3), in the direction opposite the clamping direction, while resting on the standard of the stand.

Abstract: A metal band product rolling installation comprising at least two rolls with parallel axes inside a fixed holding stand (1) having two separate standards (11a, 11b) each forming a closed frame comprising two stiles (12 12'), an upper crossbeam (16) and a lower crossbeam (16'), and delineating a center window (6), at least one of the rolls being a back-up roll (3), carried by two supporting parts (4a, 4b) each resting on a back-up face (63) of the corresponding crossbeam (16 16') of each standard (11a, 11b). According to the invention, at least on one side of the rolling plane (T1), the crossbeam (16) of each standard (11a, 11b) is fitted with a back-up face (63) exhibiting, over the whole width of the window (6), a concave rounded profile extending on an angular sector of at least 180.degree.

Abstract: A device and method for changing rolls in a roll stand. Each stand includes two working rolls, each having a backing up assembly including at least one intermediate roll. An adjustment structure is provided for adjusting levels in relation to the axes of each of the rolls with respect to the stand and for setting forth four levels of disassembly, respectively of both working rolls and both intermediate rolls. Two pairs of rails are provided parallel to the axes of the rolls arranged on the stand at two constant levels each at a level of disassembly and carrying sliding carrying members for removal of the corresponding intermediate roll. A handling device is placed on one side of the stand and includes at least one handling and guiding chassis carrying two pairs of rails aligned respectively with both pairs of rails on the stand. At least one extractor device is mounted to slide at a constant level on the guiding chassis.

Abstract: A revolver-type coiler comprising at least two rotary chucks (21, 22) carried by a revolving mounting (1) enabling to place each chuck (21), successively into a first position (A) for starting the winding operation, then into a second position (B) for completion of the winding and unloading of the coil (3). The coiler comprises a continuous supporting device (4, 41, 5) for the end (24) of each chuck (21) opposite to the mounting (1) from the first starting position (A) to the complete winding position (B), comprising at least one rotary removable resting member (4) resting on the fixed frame (12) and installed to rotate, with the revolving mounting (1) in order to support the end (24) of the chuck (21) from the first starting position (A) to the second complete winding position (B).

Abstract: The device for the making a flat product (P) comprises a cylindrical wall, brought into rotation around a fixed core (1) and cooled by circulation of a fluid for the formation, of the flat product (P), onto an angular sector of the wall (2). The cooled wall on which is cast the metal is made up of a thin metal envelope forming a shell (2) simply inserted with possibility of sliding onto a circular surface (11) of the fixed core which constitute the central section of a fixed shaft (1) to hold and center the shell (2), the shaft (1) being connected with a thrust device allowing application of the shell (2) on the circular surface (11) of the shaft (1), the cooling fluid providing the lubrication of the bush thus made.

Abstract: The invention relates to an installation for coating a metallic band by guiding the latter through an electrolytic bath (12), while passing in front of at least one anode plate (13) constituted of a set of bars arranged beside one another along a direction transversal to the forward direction (A) of the band (23) and carried by an anode bridge (14), whereas each bar forms an anode section (18). According to the invention, each anode bridge (14) comprises a carrier beam (31) along which have been arragned, one after the other, a number of live pins (32) isolated electrically from one another and linked separately to the source of current by an individual switching device (35), in order to enable fractional electric power supply of each of the anode sections (18).

Abstract: A coiler spindle for winding a band-type product such as the material coming from a continuous casting machine which includes a central shaft rotatable about an axis and having a set of adjacent segments surrounding the shaft. Each segment is mounted to slide radially on the shaft and comprises a curved plate having an external face in the shape of a cylindrical sector. The diameter of the spindle can be changed by radial displacement of the segments. Cooling of the segments is provided by the circulation of a heat exchanger fluid along each segment from a fluid box fixed to the central shaft and having at least two separate chambers. The chambers including a supply and an evacuation chamber. Each segment is provided with its own individual cooling down system arranged within the curved plate. Each individual cooling down system includes an inlet orifice connected to the supply chamber and an outlet orifice connected to the evacuation chamber.

Abstract: A splicing machine for connecting metallic bands including at least three toolings determining successively the cutting profile of both edges (m1, m2) to be connected, the welding of both edges on to one another and the flattening of the welded matter in excess. The machine includes a tool carriage (3) mounted to slide parallel to the running direction of the bands (M1, M2) on which are mounted to slide, perpendicular to the running direction, at least two supporting chassis (41, 51), each for one of the connecting toolings (4,5), a motor and a worm (32) for positioning either connecting tooling (4,5) in a common working position, by sliding the tool carriage (3) and apparatus to control the transversal sliding motion of the corresponding tooling for the actuation of the latter.

Abstract: The purpose of the invention is a treatment unit for a band product (2) comprising at least one extant treatment tub (1) connected to a mechanism (B) for controlling the running of the band product (2) inside the extant tub (1). The at least one extant treatment tub (1) is connected to at least one replacement tub (4) made of an oblong enclosure provided above the extant tub (1) and exhibiting a height (h) lower than the height (H) of the extant tub (1). The replacement tub (4) is associated with an apparatus for injecting the liquid and to the mechanism (B,B') for controlling the running of the band, so that the product (2) runs inside the replacement tub (4) in contact with the treatment liquid (A).

Abstract: The purpose of the invention is a reverse extruding press perfected for releasing a billet jammed in the container.According to the invention, the obturator (31) of the rear surface of the container with a thickness (e) can be replaced, by displacement transversal to the extrusion axis (10), by an extraction part (33) of the same thickness (e), fitted with a central hole (34) of the same section as that of the recess (20) of the container (2). By bringing the movable beam (3) forward, the extraction part (33) pushes the container (2) backwards as well as the rear section (53) of the billet (5) which is cleared from the recess (20) and engages into the central hole (34). The billet (5) being thus maintained, the container can be moved forward to position the pick-up means (54).

Abstract: A turntable coiler for reeling a strip product, comprising a frame mounted rotatably around a central axis, and at least two fixed cantilever reeling mandrels, each in the alignment of a rotation shaft mounted rotatably on two spaced centering bearings. Each mandrel is connected to a motor comprising a rotor fastened to the shaft of the mandrel, and a stator. Each mandrel, its rotation shaft with both bearings and the motor form a motor-mandrel assembly mounted in an independent chassis on which are fastened the stator of the motor and both centering bearings of the shaft carrying the rotor, and the rotary frame is provided with at least two supporting devices, connected to removable bolts for centering and fastening the chassis of the motor-mandrel assembly, in a position for which the reeling axis defined by the bearings is parallel to the central axis, and each motor-mandrel assembly thus constitutes an interchangeable module.

Abstract: A process for strand casting of steel in a cooled casting mold made to oscillate over a distance h at a frequency f, for manufacturing a product withdrawn from the mold at a casting speed V.sub.C, the metal being surmounted by alubrication product forming a liquid slag, the speed of descent of the casting mold being greater than the casting speed V.sub.C during a negative stripping time t.sub.N. The casting speed VC can be adjusted over a wide range to adapt to well-defined casting conditions without modifying the nature of the lubrication product, by acting in a combined way on the distance and frequency of oscillations according to the chosen casting speed, in such a way that the consumption rate Q of the lubrication product and the negative stripping time t.sub.N are both maintained at an optimum value that remains substantially constant over the entire speed adjustment range, irrespective of the casting speed V.sub.C.

Abstract: A rolling mill comprising at least two work rolls supported by chocks (4, 40) mounted so as to slide, with clearance, between two fixed guide faces (13a, 13b). Each chock (4, 40) is thrust laterally against the guide faces (13a, 13b) in order to take up the clearance when in service. Each chock (4, 40) is surrounded by two intermediate pieces (6a, 6b) mounted so as to slide without clearance along the corresponding guide faces (13a, 13b). These intermediate pieces are rigidly locked vertically with the chock (4) so as to move with it. Lateral thrustors (7) are interposed between at least one side of each chock (4) and the facing intermediate piece (6b) in order to push the chock back against the other intermediate piece (6a) and corresponding guide face (13a). The two guide faces (13a, 13'a) against which the two chocks (4, 4') of a roll (2) are pressed define a reference plane (P1) for the positioning of the axis of the roll (2) with the possibility of sliding parallel to that plane (P1).

Abstract: A process for the cold rolling of a metal strip between rollers of rolling stands arranged sequentially is provided, along with a plant for its implementation, wherein the process involves:analyzing, as a function of frequency, a signal from an inter-stand tension measurement sensor corresponding to a level of tension of the metal strip to determine periodic variations in the signal having frequencies corresponding to a speed of rotation of the pair of rollers in a downstream rolling stand and proportional to out-of-roundness defects present in the rollers of the downstream rolling stand; andcompensating for the out-of-roundness defects in the rollers in the downstream rolling stand by adjusting the clamping setting of the rollers in the downstream rolling stand in accordance with a compensation signal, produced by the means for compensating, that is proportional to the periodic variations.

Abstract: An imbricated roll planisher comprising, inside a fixed stand, two planishing systems each including a plurality of live planishing rolls with parallel axes, rotatably mounted in a supporting chassis and each associated with at least one row of support rollers, the assembly being pressed, on the side remote from the strip to be planished, against a resistant bearing beam. At least one of the planishing systems bears against the corresponding bearing beam via a set of hydraulic jacks distributed across the entire surface covered by the system, in parallel rows of at least two jacks, each row corresponding to one of the live planishing rolls. By individually adjusting the position and the pressure of the jacks of each of the rows, it becomes possible to determine the degree of imbrication and the distribution of the force applied on each of the live rolls, it being possible to make this adjustment even while the strip is feeding through.

Abstract: A leveling machine with parallel cylinders comprising at least one pair of active leveling cylinders (2), placed on each side of the strip to be leveled and each free to rotate and supported on a crosspiece (5) through a series of spaced bearing members (3). Each bearing member (3) comprises a bearing part (31) mounted in an individual frame forming a casing, connected to crosspiece (5) with a possibility of a clearance transverse to the plane of motion P of strip (A). Each of the said casings bears individually on crosspiece (5) through a positioning member (6) of variable length, for individual adjustment at the level of the corresponding bearing part (31) with respect to the crosspiece (5). The invention is particularly applicable to leveling of thin metal strips.

Abstract: Coiler for winding a strip product, comprising a supporting frame (1) supported, on at least one side, by a hollow tubular shaft (2) rotating in at least one fixed bearing (21) centered about an axis (x'x) of rotation of the frame, at least two winding mandrels (3a, 3b) each mounted on an off-centered shaft of rotation (31), each mandrel shaft (31) being fitted into and locked in rotation with a tubular sleeve (5) supported by two spaced bearings (51) each mounted in a crown (52) fixed onto said rotating frame (1). At least two autonomous motors (6) provide rotational drive, respectively, for the two mandrels (3a, 3b), and each comprises a rotor (62) fitted over and locked in rotation with the tubular sleeve (5) and a stator (61) mounted on a side wall (53) extending between and attached to the crowns (52).