摘要:
A method for lubricating rolls, especially work rolls (2, 3) of a rolling stand, and rolling stock (6) passed between the rolls during the rolling operation, in which a lubricant-gas mixture, a lubricant-water-gas mixture, a lubricant-water mixture and/or a grease-medium mixture is applied to the rolls (2, 3) or the rolling stock (6) on the run-in side of the rolling stand, is characterized by the fact that the mixture is prepared with at least one mixing device (14, 17, 27, 29, 31, 35) in the area upstream of the rolling stand.
摘要:
The invention relates to a method for calibrating a rolling stand (3), wherein in order to determine the relative pivot position of the roller set for setting a symmetrical roll gap and/or for determining the extension of the rolling stand (3) before the actual rolling process, the roller set is pressed against each other under a radial preset force and the resulting deformation of the rolling stand is preferably measured on the piston-cylinder unit (6, 7). The pivot position of the roller set and/or the frame module (M) determined based thereon are mathematically used during the subsequent rolling of a rolling stock between the working rollers (1, 2) for adjusting the roller set. In order to attain a higher accuracy during rolling, the invention provides for the working rollers (1, 2) to be axially adjustable relative to each other starting from a zero position that is not axially displaced, wherein the determination of the pivot position for setting a symmetrical roll gap and/or the determination of the frame module (M) are carried out in a relative displacement position of the working rollers (1, 2) that is not equal to the zero position (calibration position), wherein the determined pivot position and/or the value for the frame module (M) are stored and mathematically used for further calculating the pivot position and/or the adjustment of the roller set during rolling of the rolling stock.
摘要:
The invention relates to a roll stand for rolling a product, in particular made of metal, comprising a pair of first rollers contacted by a pair of second rollers supporting the first rollers, wherein the first roller and the second rollers have an asymmetrical radius curve (CVC grind) relative to a center plane, wherein the radius curve of the first rollers is represented by a polynomial of the third or fifth order. In order to design the wedging of a second roller supporting a first roller such that optimal operating conditions are set, the invention proposes that the radius curve of the second roller is given by a polynomial of the third or fifth order, wherein special relationships are prescribed for the ratios between the coefficients.
摘要:
A method of manufacturing a metal strip includes casting a slab (3) or preliminary strip (3′) in a casting machine (2) and subsequently rolling the cast slab (3) or preliminary strip (3′) in at least one rolling train (4, 5) in a first operating mode with the at least one rolling train being connected with the casting machine for continuously manufacturing the metal strip, and in a second operating mode removing the cast slab (3) or preliminary strip (3′) from the main transport line (6) with a shuttle system arranged between the casting machine (2) and the at least one rolling train (4, 5), storing the removed slab (3) or preliminary strip (3′), and subsequently transporting the removed slab (3) or preliminary strip back into the main transport line, with the removed slab (3) or preliminary strip (3′) being heated to a desired temperature or maintained at a desired temperature prior to the transport back into the main transport line (6) for discontinuously manufacturing the metal strip.
摘要:
A method for lubricating rolls, especially work rolls (2, 3) of a rolling stand, and rolling stock (6) passed between the rolls during the rolling operation, in which a lubricant-gas mixture, a lubricant-water-gas mixture, a lubricant-water mixture and/or a grease-medium mixture is applied to the rolls (2, 3) or the rolling stock (6) on the run-in side of the rolling stand, is characterized by the fact that the mixture is prepared with at least one mixing device (14, 17, 27, 29, 31, 35) in the area upstream of the rolling stand.
摘要:
The invention relates to a method and a finishing train for hot-rolling starting material. Starting material is finished in several successive roll stands (110 n) in the finishing train, the material cooling off because of heat loss. The material has to be reheated in order for the temperature of the material not to drop below the predefined lower threshold temperature value at low speeds within and at the discharge end of the finishing train. In order to use as little energy as possible for said reheating process the reheating process within the finishing train is carried out for the first time only when the temperature of the material risks falling below the lower threshold temperature value for the first time relative to the direction of flow of the material because of heat loss. Furthermore, the temperature of the material during the reheating process is increased only to the point where the temperature of the material will not drop below the lower threshold temperature value (TU) while the material is conveyed onto a next heating device that is mounted downstream in the direction of flow of the material and until the material is discharged from the mill train.
摘要:
A method of adjusting two shielding elements and including transporting a metal strip on a roller table, shielding a cooling medium from the edge regions of the metal strip with adjusting shielding elements, and adjusting the shielding elements asymmetrically with respect to the central axis of the roller table so that the temperature profile behind the shielding elements, as seen in a transporting direction of the strip, approximate to a nominal temperature profile; and an assembly for effecting the method.
摘要:
A method of adjusting a position of two shield elements for a liquid cooling medium and arranged above a metal strip having a strip plane and a strip central plane extending transverse to the strip plane and intersecting the same along the strip central axis, with the two shield elements being located opposite each other with respect to the strip central plane and having each an adjustable component identical to the adjustable component of another of the two shield elements and adjustable transverse to the strip central plane, and with the method including providing an adjusting element connectable with the two shield elements for adjusting the same, and adjusting the adjusting element in the strip central plane; and a device for effecting the method.
摘要:
The invention relates to a method for processing a slab (1) in a device, which comprises at least one furnace (2), at least one processing device (3, 4) arranged downstream of the furnace (2) in the conveying direction (F) of the slab (1), and a rolling train (5) arranged downstream of the at least one processing device (3, 4) in the conveying direction (F) of the slab (1), wherein means (6, 7) are provided, by means of which a force can be applied to the sides (8, 9) of the slab (1) in order to move the axis (10) of the slab (1) in agreement with a specified position transversely to the conveying direction (F) of the slab (1), in particular in accordance with the axis (11) of the rolling train (5). In order to optimize the rolling process by precisely introducing the slab into the rolling train, according to the invention first means (6) act on the slab (1) to apply a lateral force to the slab (1) at a first location (12), and second means (7) act on the slab (1) to apply a lateral force to the slab (1) at a second location (13), wherein the second location (13) lies at a distance from the first location (12) in the conveying direction (F) of the slab (1), wherein the first location (12) lies behind the furnace (2) and wherein the second location (13) lies in front of within, or behind the at least one processing device (3, 4). The invention further relates to a device for processing a slab.
摘要:
A method for continuous casting and rolling at increased casting speed followed by hot rolling of relatively thin metal strand, especially steel strand (1), where presetting of target temperatures (6) of the hot strip (2) reduces temperature losses in the hot strip (2) by increasing the temperatures of the work rolls (4) at a predetermined rate of increase, starting from a low initial temperature (5), and by adjusting the strip temperature (15) to a target rolling temperature (6) of the hot strip (2) and/or by automatically controlling or regulating the intensity of the roll cooling (18).