Abstract: The invention relates to a steel-plate descaling device, including several steel-plate surface descalers and several steel-plate side-surface descalers disposed along the direction of a flow line as well as a trolley rail disposed in parallel to one side of the flow line. At least one roller-changing vehicle slides back and forth on the rail. The roller-changing vehicle is provided with a roller-changing mechanism. When the roller-changing vehicle slides to a front side of the steel-plate surface descaler, the roller-changing mechanism extends into the inner part of the steel-plate surface descaler to change the roller. The oxide scale of the steel-plate surface is removed physically, having low pollution and high descaling efficiency without a blind spot, and simultaneously having a high degree of automation in replacing the descaling roller through the roller-changing vehicle, saving both time and effort.

Abstract: A plant for cleaning rolled metal strips provided with a superficial layer of oxide, the plant comprising unwinding means for unwinding at least one coil of rolled strip and pickling means for pickling said rolled strip; wherein there are provided measuring means for measuring the thickness of the superficial layer of oxide, arranged between said unwinding means and said pickling means. A relating cleaning method is also claimed.

Abstract: A stain removal device and a stain removal method for removing stain, such as scale residue or smut from the surface of a wire material by a cord-shaped member, includes a wire material winding device for winding a wire material on the surface of which the stain is deposited, a cord-shaped member which is wound on the wire material and wipes off stain attached on the surface of a wire material by a sliding movement relative to the wire material, and a cord-shaped member feed device for feeding the cord-shaped member relative to the wire material. The stain removal method includes linear feeding of a wire material, winding a cord-shaped member on the wire material, wiping off the stain attached on the surface of the wire material by rolling up the cord shaped member, and blowing air onto the surface of the wire material to blow away stain remaining thereon.

Abstract: A sheet metal straightener uses a direct coupled eccentric drive for improved pilot release. A motor, coupled to an eccentric bearing, causes connecting arms to reciprocate. At least one of the banks of rollers is coupled to a pivot hinge, and the connecting arms are coupled to a pivoting bank of rollers, causing the pivoting bank to index toward the other bank of rollers in an engaged position for material straightening, and to index away from the other bank of rollers in a relaxed position for pilot release. The pivoting roller bank is preferably a top roller bank positioned above the lower bank. The motor rotates 360 degrees to complete a full cycle, from fully engaged at 0/360 to fully relaxed at 180. The width and degree of roller engagement may be variable to account for different materials and thicknesses.

Abstract: A cold state metal plate strip surface treatment system and a treatment method thereof, used for high-pressure jet-flow descaling and rinsing metal plate strips, includes a high-pressure jet-flow descaling section. A tension unit and a stabilizing roller are provided in front of the high-pressure jet-flow descaling section, and a stabilizing roller, a compressed air drying device and a tension unit are provided after the high-pressure jet-flow descaling section; at least one descaling unit is provided in the high-pressure jet-flow descaling section, wherein the descaling unit includes first and second bending rollers used for bending a metal plate strip, and correspondingly first and second jet-flow descaling nozzles, and first and second rinsing nozzle sets.

Abstract: The invention relates to a method for descaling a scaled metal strip, in particular a hot-rolled metal strip with a thickness of more than 1 mm, for example 1.2 mm to 16 mm. The strip is guided around at least two straightening rollers which are arranged one behind the other in the strip running direction and undergoes an alternating bending in the process. At least one of the straightening rollers can be positioned transversely to the strip running direction.

Abstract: A method for continuously removing scale from a hot-rolled carbon steel strip includes: cracking the scale on the hot-rolled steel strip; shot-blasting the cracked scale to remove the scale; deforming the hot-rolled steel strip so as to weaken the bond between scale remaining after the shot-blasting and the hot-rolled steel strip and so as to impart surface roughness to the hot-rolled steel sheet; and polishing the deformed hot-rolled steel strip to remove the remaining scale.

Abstract: A metal processing apparatus comprises a scale breaker apparatus having a plurality of rollers positioned in a staggered arrangement and engaging first and second surfaces of sheet metal. The staggered arrangement creates clearances between the rollers of the first and second surface rollers sufficient to enable the sheet metal to conform to a portion of an outer periphery of at least one of the rollers while passing between the first and second surface rollers under a tensile force. The metal processing apparatus further comprises a recoiler adapted to coil the length of sheet metal. The recoiler subjects the sheet metal passing through the scale breaking apparatus to a tensile force sufficient to conform the sheet metal to a portion of the outer periphery of at least one of the rollers with a wrap angle sufficient to break scale from the sheet metal.

Abstract: A method and a device for improving the outer surface quality by an in-line outer surface treatment of slabs, which are produced in a continuous process from strand casting to hot rolling, with a heating furnace arranged between a CSP-casting machine and a hot rolling train. A defined surface of the slab with a layer thickness per slab side of up to 4 mm is oxidized in a targeted manner by an oxidation device. An oxidation treatment of the slab surface is combined with the following processing in-line method steps: prior to the oxidation treatment the outer surface of the slab is freed of naturally occurring scale by a scale washer, after the oxidation treatment a created oxidation layer as well as the newly formed scale is cooled, mechanically broken up in a roll pair and removed from the surface of the slab by a scale washer.

Abstract: The invention relates to a method for suppressing the influence of roll eccentricities on the run-out thickness of a rolled stock, which runs through a rolling stand, roll eccentricities being identified by using a process model and taken into consideration in the determination of a correction signal for at least one final control element, preferably a final control element for the adjustment position, of the rolling stand, wherein the measured tensile force upstream of the rolling stand is fed to the process model to identify the roll eccentricities. According to the invention, variations in tensile force are fed back in a targeted manner to reduce the effects of periodic roll eccentricities on the rolled stock, whereas all other sources of variation are eliminated. A process model of the rolling nip and the rolls, preferably based on the observer principle, produces reliable data on the roll eccentricity.

Abstract: 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).

Abstract: A metal processing apparatus comprises a scale breaker apparatus having a plurality of rollers positioned in a staggered arrangement and engaging first and second surfaces of sheet metal. The staggered arrangement creates clearances between the rollers of the first and second surface rollers sufficient to enable the sheet metal to conform to a portion of an outer periphery of at least one of the rollers while passing between the first and second surface rollers under a tensile force. The metal processing apparatus further comprises a recoiler adapted to coil the length of sheet metal. The recoiler subjects the sheet metal passing through the scale breaking apparatus to a tensile force sufficient to conform the sheet metal to a portion of the outer periphery of at least one of the rollers with a wrap angle sufficient to break scale from the sheet metal.

Abstract: There is provided a variable pressure roller system for installing a preform having contact surfaces onto a configuration of a mold surface by applying pressure thereon. The roller system of the present invention comprises a roller carriage. A grasping handle may be mounted to the roller carriage. Moreover, the roller system may further comprise a plurality of rollers, wherein each respective one of the plurality of rollers is defined by a weight to generate a specific pressure corresponding thereto. Furthermore, each respective one of the plurality of rollers may be removably engageable to the roller carriage. Each respective one of the plurality of rollers may be adapted to uniformly distribute the specific pressure corresponding thereto on the contact surfaces for conforming the preform to the configuration of the mold surface when engaged to the roller carriage.

Abstract: A method of descaling surfaces having oscillation marks of cast billets produced by a continuous casting process an reduced in a hot strip train including an equalizing furnace and a plurality of rolling mill stands, with the cast billets being delivered from a continuous casting machine through a billet guide, with the method including subjecting surfaces of a cast billet, in a limited region between an end of the billet guide and an entrance of one of the equalizing furnace and a first rolling mill stand, by at lease a double deflection of the cast billet from a horizontal transporting path of the cast billet, to stretching in a region of each deflection, and subjecting the surfaces of the cast billet to an intensive flushing with hard water jets in the deflection regions of the eight-gage slab.