With Cleaning Or Conditioning Of Tool, Or Lubrication Of Tool Or Machine Patents (Class 72/236)
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Publication number: 20010007200Abstract: 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).Type: ApplicationFiled: January 9, 2001Publication date: July 12, 2001Applicant: VAI CLECIM, LE POLYEDREInventors: Andre Ravenet, Thierry Malard
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Patent number: 6216517Abstract: A precision-rolling process for producing rolled stock in bar or wire form while maintaining tight shape and size tolerances is characterized, for the purpose of providing good accessibility to the roll stands, by the combination of the following features: rolling of the stock in at least one two-high roll stand with an open pass, starting from any desired cross section, to form rolled stock which is polygonal, in particular tetragonal, in cross section, guiding the rolled stock over a predetermined distance along one or more longitudinal edges and/or along those surfaces of the rolled stock which adjoin longitudinal edges, to a further roll stand, and subsequent rolling to form rolled stock which is circular in cross section in at least one closed pass, in which rolling forces act on and deform the rolling stock in a star shape from at least three directions.Type: GrantFiled: July 13, 2000Date of Patent: April 17, 2001Assignee: Voest Alpine Industieanlagenbau GmbHInventor: Gerald Hein
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Patent number: 6182789Abstract: An escape device for escaping from a building or other high area in an emergency comprises a worm gear mechanism driven by an electric motor and operatively coupled to a reel having a length of high tensile line wound around it, arranged within a casing, and a belt connected to the casing for supporting a person's body. The worm gear mechanism rotates the reel, feeding out the line, and thereby lowering the user to a safe location below.Type: GrantFiled: March 13, 1995Date of Patent: February 6, 2001Inventor: Toshio Okamura
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Patent number: 6142003Abstract: A method and apparatus for cooling hot-rolled rolling stock, wherein, for cooling preferably both sides of hot-rolled wide strip, a heat exchange is carried out between the rolling stock and the cooling medium by a pressurized water flow through a sequence of a pressure chamber and a convection chamber, and wherein the rolling stock is cooled by a targeted control of the intensity of the forced convection. The method utilizes a combination of a cooling unit between stands and an additional roll cooling unit in the area of the roll gap at the exit side thereof using a directed pressurized water flow along a circumferential portion of the roll body of each work roll, wherein the cooling unit between stands and the roll cooling unit each operate with contactless sealing means for the surface of the rolling stock and the surface of the roll body.Type: GrantFiled: November 3, 1999Date of Patent: November 7, 2000Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Uwe Plociennik, Meinert Meyer, Ludwig Weingarten, Martin Braun
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Patent number: 6089069Abstract: An apparatus and a method for influencing the frictional conditions between an upper roll and a lower roll of a roll stand of a hot-rolling train for wide strip or a cold-rolling train for strip. The apparatus includes a spraying device arranged at the entry side of the roll stand for spraying a defined quantity of liquid in the direction of the roll gap and a control device for determining the quantity and discharge of this liquid, wherein used as a control variable is a predetermined or also computed variable in connection with the actual roll torque of the lower roll or/and the upper roll.Type: GrantFiled: October 7, 1998Date of Patent: July 18, 2000Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Jurgen Seidel, Hans-Heinrich Hartmann
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Patent number: 6076388Abstract: A work roll crossing type rolling mill has back-up rolls arranged in such a manner that their axes are not inclined in a horizontal plane. Work rolls are constructed in such a manner that their axes can be inclined in a horizontal plane relative to the backup rolls such that the axes of the work rolls cross the axes of the back-up rolls and such that the axes of the work rolls cross each other. A lubricant supply device is provided for supplying a lubricant between each work roll and each back-up roll combination to greatly reduce the thrust exerted to the work rolls, whereby the rolling mill is given an excellent ability of controlling the crown of the material to be rolled.Type: GrantFiled: June 2, 1998Date of Patent: June 20, 2000Assignee: Hitachi, Ltd.Inventors: Toshiyuki Kajiwara, Tokuji Sugiyama, Yoshio Takakura, Takao Sakanaka, Yasutsugu Yoshimura, Ken-ichi Yasuda, Shinichi Kaga
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Patent number: 6029491Abstract: A system and method for extending work roll useful life and controlling workpiece profile during thickness gauge reduction of continuous metal strip by axially shifting rotating work rolls during rolling, applying work roll bending forces at locations for maximum leverage and enabling work roll dressing apparatus to be located such that detrimental strip processing conditions of the working zone are not encountering by the dressing apparatus; shortening of work roll length is made possible by the location of the dressing apparatus.Type: GrantFiled: April 28, 1999Date of Patent: February 29, 2000Assignees: Danieli United, International Rolling Mill Consultants, Inc.Inventor: Vladimir B. Ginzburg
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Patent number: 5928441Abstract: A hot rolling method of steel products comprises rolling steel products while forming a film of an oxalate (such as iron oxalate, calcium oxalate and the like) on the roll surfaces which have contact with the steel products to be rolled and a hot rolling roll for steel products which has an oxalate film on the roll surfaces having contact with the steel products to be rolled. The oxalate film is effective in preventing steel products, particularly stainless steel products, from seizing between the rolls and the steel products to be rolled, preventing wear of the rolls, and preventing the deterioration of both the rolls and the steel products, when the steel products are subjected to hot rolling.Type: GrantFiled: March 24, 1997Date of Patent: July 27, 1999Assignee: Sumitomo Metal Industries, Ltd.Inventors: Masaru Izawa, Yoshiaki Kusaba, Kenji Tsubouchi
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Patent number: 5927166Abstract: In a plural-roll rolling mill having a pass line arranged by the respective sets of rolls, each having a caliber formed on the outside peripheral surface thereof, the outside peripheral surfaces being disposed close to each other, the calibers of the rolls being cut with a cutting tool of a three-dimensionally (forward and rearward, rightward and leftward and upward and downward) movable cutting machine. The rolling mill, which has a reference column disposed on the outside surface thereof at a position spaced apart from the pass line by a predetermined distance, is removed from a rolling line and fixed, and the positional alignment of the cutting tool is carried out by causing a contact sensor disposed on the cutting machine at a position spaced apart from the cutting tool by a predetermined distance to come into contact with the reference column. With this arrangement, there are provided a method and apparatus capable of cutting the rolls of the plural-roll rolling mill while mounted on the rolling mill.Type: GrantFiled: February 5, 1997Date of Patent: July 27, 1999Assignee: Kawasaki Steel CorporationInventors: Ryo Takeda, Hidenori Kondo, Yoshihiro Shinkai
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Patent number: 5775152Abstract: An apparatus for keeping cold strip dry in the runout of cold rolling and strip rolling plants includes units for deflecting liquid rolling medium in the area of the strip runout and/or for the removal of spray liquid adhering to the surfaces of the strip, wherein these units are logistically combined, the apparatus including the following components a fixedly installed partition wall having an upper portion above the strip runout extending to the stand platform and a lower portion below the strip runout extending to the base plate, a moveable partition equipped with moveable components for facilitating a problem-free roll exchange, a roll body blower constructed for deflecting squeezed-out rolling medium from the finish-rolled strip, a roll body sealing unit constructed for sealing the roll space above the strip relative to the strip, a strip edge blower constructed for producing an air flow perpendicularly to the strip in the roll gap on the exit side above the strip runout, and a vapor-exhaust unit for proType: GrantFiled: September 19, 1996Date of Patent: July 7, 1998Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Dieter Daub, Wolfgang Denker, Joachim Schmelzer
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Patent number: 5768927Abstract: A work roll crossing type rolling mill has back-up rolls arranged in such a manner that their axes are not inclined in a horizontal plane. Work rolls are constructed in such a manner that their axes can be inclined in a horizontal plane relative to the backup rolls such that the axes of the work rolls cross the axes of the back-up rolls and such that the axes of the work rolls cross each other. A lubricant supply device is provided for supplying a lubricant between each work roll and each back-up roll combination to greatly reduce the thrust exerted to the work rolls, whereby the rolling mill is given an excellent ability of controlling the crown of the material to be rolled.Type: GrantFiled: July 24, 1996Date of Patent: June 23, 1998Assignee: Hitachi Ltd.Inventors: Toshiyuki Kajiwara, Tokuji Sugiyama, Yoshio Takakura, Takao Sakanaka, Yasutsugu Yoshimura, Ken-ichi Yasuda, Shinichi Kaga
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Patent number: 5666837Abstract: A work roll cross type rolling mill comprises a pair of work rolls and a pair of back-up rolls for backing up the work rolls. The back-up rolls are so arranged that their axes can be inclined within horizontal planes only to three or four specific angular positions. The work rolls are allowed to be inclined within horizontal planes with respect to the back-up rolls such that the axes of the work rolls cross the axes of the associated back-up rolls and cross each other. The nip between each the work roll and the associated back-up roll is lubricated so as to reduce axial thrust generated therebetween due to the crossing of the rolls. The cross angle between the work rolls is set and controlled during rolling operation only when the roll peripheral speed or the rolling speed is 50 m/min or higher.Type: GrantFiled: November 1, 1994Date of Patent: September 16, 1997Assignee: Hitachi Ltd.Inventors: Toshiyuki Kajiwara, Tokuji Sugiyama, Yoshio Takakura, Takao Sakanaka, Yasutsugu Yoshimura, Ken-ichi Yasuda, Shinichi Kaga
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Patent number: 5664450Abstract: A method and apparatus for manufacturing resilient, deformable serpentine products including a pair of form rolls (10, 12). The form rolls (10, 12) are generally circular in shape and include a plurality of intermeshing blades (56). The blades (56) have a plurality of teeth (62) each including a peak (70), a valley (74), and a central hollow region (64) that receives a shaft (90) for transferring a fluid thereto. The fluid is then conveyed from the shaft (90) through a plurality of grooves (80) on the surface of the blades (56). In one embodiment, the fluid is to aid in the forming process.Type: GrantFiled: September 9, 1996Date of Patent: September 9, 1997Assignee: Livernois Research & Development CompanyInventor: Richard P. Stoynoff, Jr.
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Patent number: 5657655Abstract: In a tandem mill system, at least one first type rolling mill is arranged in the upstream side and at least one second type rolling mill is arranged in the downstream side. The first type rolling mill is of the so-called work roll crossing mill in which a pair of work rolls are inclined with respect to a pair of back-up rolls supporting the work rolls and simultaneously crossed each other in a horizontal plane to control transverse thickness distribution of a strip. The second type rolling mill is of the so-called HC mill which controls the strip crown and shape by a combination of axial movement of intermediate rolls and work roll bending. Such an arrangement makes it possible to increase a capability of controlling the strip crown and shape, particularly, a capability of correcting the quarter buckle, and eliminate a fear of causing scratches on the strip and roll surfaces, with the result of improved production efficiency.Type: GrantFiled: September 10, 1996Date of Patent: August 19, 1997Assignee: Hitachi, Ltd.Inventors: Kenichi Yasuda, Kenjiro Narita, Yukio Hirama, Kouji Satou, Yasutsuga Yoshimura, Yoshio Takakura, Shinichi Kaga
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Patent number: 5628223Abstract: An arrangement for sealing without contact a gap between a separating wall and a work roll in the runout of a roll stand includes at an end of the separating wall a separating element which is arranged so as to extend approximately tangentially relative to the surface of the work roll and at a relatively small distance from the surface of the work roll and from the surface of the rolled material. The separating element has at least one supply duct for compressed air connected to a compressed air source, wherein the supply duct has at an end thereof a slot-shaped nozzle which is located at a small distance from the roll surface and extends along the roll surface in the direction of the roll axis. The blowing-out direction of the slot-shaped nozzle and a line extending from the nozzle opening perpendicularly relative to the axis of the work roll include an angle of between 0.degree. and 45.degree..Type: GrantFiled: January 6, 1995Date of Patent: May 13, 1997Assignee: SMS Schloemann-Siemag AktiengesellschaftInventor: Wolfgang Denker
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Patent number: 5596898Abstract: 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.Type: GrantFiled: November 28, 1994Date of Patent: January 28, 1997Assignee: Danieli & C. Officine Meccaniche SpAInventors: Fausto Drigani, Pietro Morasca
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Patent number: 5584203Abstract: A device for changing the rolling mandrels of a plug mill. The device including the following arrangement of stations in series. An entry station for feeding the rolling mandrels into the feeding channel of the plug mill, a run-out station for the used rolling mandrels after rolling, and a transfer device for guiding the mandrels into a cooling station. The cooling station undertakes controlled cooling of the rolling mandrels, preferably by a water/air mixture. At the same time, devices remove the scale by joint application of water and mechanical aids. Finally, a drying station dries the cooling water from the surface of the rolling mandrels.Type: GrantFiled: August 18, 1995Date of Patent: December 17, 1996Assignee: Mannesmann AktiengesellschaftInventors: Hans Eversberg, Burkhard Schifferings, Karl-Heinz Hausler
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Patent number: 5531090Abstract: A device for adjusting a brush roll relative to a work roll in roll stand, particularly a roll stand for hot-rolling of aluminum includes pivotable supports mounted on both sides of the brush roll. The brush roll is rotatable in a direction opposite the direction of rotation of the work roll. The brush roll is displaceable in translatory movements parallel to the work roll. The pivot bearing of each brush roll support is arranged on a work roll chock, wherein the support includes a pivoting lever which is located between a controllable actuating element and a restoring support element. The actuating element is mounted in the balancing block or bending block of the roll stand and the support element is mounted in the chock.Type: GrantFiled: December 23, 1993Date of Patent: July 2, 1996Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Achim Klein, Hans-Jurgen Bender
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Patent number: 5473924Abstract: In a rolling mill for following aluminum strip, it is desirable to apply water to the rolls on the entry side of the mill. Water should be kept off the surface of the rolled strip to avoid marking and, to this end, a moisture extraction device is arranged to collect moisture passing between the upper work roll and its back-up roll. The device includes an extractor system connected to a head assembly located in the cusp between the work roll and its back-up roll on the exit side of the mill.Type: GrantFiled: January 14, 1994Date of Patent: December 12, 1995Assignee: Davy McKee (Poole) LimitedInventor: Christopher D. Collinson
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Patent number: 5467629Abstract: A straightening apparatus with a plurality of rotatable straightening rollers arranged in two parallel planes, with the axles of the rollers being supported in two body parts forming a basic chassis. The body parts are arranged relatively movable against each other on guides and have a closing mechanism. The body parts are maintained in a defined open position by the springs supported on the parts, and are movable by the closing mechanism into a closing position with a predetermined defined zero position, whereby the closing position is securable in the defined zero position by a releasable locking connection.Type: GrantFiled: April 5, 1994Date of Patent: November 21, 1995Assignee: Witels Apparate-Maschinen Albert GmbH & Co. KGInventor: Eckehard Albert
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Patent number: 5460023Abstract: Method and apparatus for cleaning oxide scale from rolling mill rolls comprises a cleaning spray system including a fluid header juxtaposed to a mill work roll and an associated backup roll and a plurality of nozzles equidistantly spaced along the length of the header. High pressure cleaning water sprays, for which water is supplied by a descaling pump when not in use for descaling, are directed onto a work roll, and by rotation of the header, then directed onto the associated backup roll. The water sprays are directed against the rolls at an angle from 3.degree. to 10.degree. for optimum removal of oxide scale. For even restoration of the roll surface, the cleaning spray system periodically during the cleaning operation is shifted axially along the length of the rolls a distance about one-half the spacing between adjacent nozzles.Type: GrantFiled: August 5, 1993Date of Patent: October 24, 1995Assignees: International Rolling Mill Consultants Inc., Danieli United, Inc.Inventor: Vladimir B. Ginzburg
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Patent number: 5392627Abstract: A leveling machine for metal sheet or strip with upper and lower leveling rollers offset relative to one another and supported by back-up rollers, which are located between web plates lying on adjustment wedges supported on roller blocks and cross ties, includes discharge rods reciprocating in the metal plate traveling direction and disposed between the web plates.Type: GrantFiled: October 22, 1993Date of Patent: February 28, 1995Assignee: SMS Schloemann-Siemag AktiengesellschaftInventor: Willi Benz
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Patent number: 5352373Abstract: A lubricating composition for use in hot rolling comprises from about 20% to about 70% by weight, based on the total weight of the composition, of an overbased metal sulfonate, e.g., overbased calcium sulfonate, having a base number of at least about 40 mg-KOH/g and preferably at least 200 mg-KOH/g. The lubricating composition can be applied to at least one pair of work rolls in a rolling mill during hot rolling of a steel. It may also be applied to the steel itself immediately before hot rolling. The lubricating composition is effective for preventing galling and reducing roll wear without causing slippage of the steel and it is particularly suitable for use in hot rolling of carbon steel under severe conditions or of stainless steel including high-Cr stainless steel.Type: GrantFiled: March 5, 1993Date of Patent: October 4, 1994Assignee: Sumitomo Metal Industries, Ltd.Inventor: Kunio Goto
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Patent number: 5255549Abstract: A tension leveler roll cleaning system which is incorporated in a tension leveler of a type having a work roll supported by backup rolls and includes a payout stand, a takeup stand, and a strip of fabric media which is guided about the backup rolls. The payout stand preferably is positioned upstream of the backup rolls and the takeup stand downstream of the backup rolls. The strip of fabric media extends between the payout stand and takeup stand, and is held against arcuate portions of the backup rolls by spacer plates which extend between the bearing plates supporting the work and backup rolls. The takeup stand includes a hydraulic motor which is actuated to recoil the strip material and draw it from the payout stand about the backup rolls. The strip material is mounted in coiled form on the payout stand and is recoiled into a coil for efficient disposal.Type: GrantFiled: June 10, 1992Date of Patent: October 26, 1993Assignee: The Monarch Machine Tool CompanyInventor: Robert A. Williams
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Patent number: 5224051Abstract: A metalworking fluid central system through which aqueous cutting fluid recirculates through a plurality of machine tools is provided with an in-line fluid condition monitor which produces real-time fluid composition data for use in controlling the condition of the fluid. Four sensors simultaneously measure temperature, pH, dissolved oxygen and conductivity at hourly intervals and the data is stored in a computer module linked to the monitor. A plurality of diversely located plants are similarly equipped. A computer at a remotely located central monitoring facility selectively connects to the computer modules at the various plants through modems and a telephone system to collect the data daily. The data is analyzed at the central facility and dimensions are made manually and automatically to add components to the fluid at the respective plants or to take other corrective action.Type: GrantFiled: May 19, 1989Date of Patent: June 29, 1993Assignee: Cincinnati Milacron, Inc.Inventor: Jerry T. Johnson
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Patent number: 5212975Abstract: One or more spray bars having a plurality of spray nozzles for cooling a rolling mill roll are provided with an apparatus to cause at least one spray bar to undergo a translational, rotational, and/or pivotal movement sufficient to change the spray-angle and/or spray-distance affected by nozzles thereon to thereby control the cooling rate effected by the nozzles so moved. The spray bar can be automatically controlled by providing a means for monitoring the roll condition and/or workpiece condition and means responsive thereto for moving the spray bar as necessary to change and adjust individual cooling rates effected by the nozzles and correct for any undesired result so monitored. A unique spray bar has nozzles arranged in a curved alignment so that each effects a different spray-angle and/or spray-distance. Like apparatus and comparable methods can be utilized to cool a hot rolled product.Type: GrantFiled: October 24, 1991Date of Patent: May 25, 1993Assignees: International Rolling Mill Consultants, Inc., United Engineering, Inc.Inventor: Vladimir B. Ginzburg
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Patent number: 5174144Abstract: A 4-high-rolling mill includes a pair of upper and lower works, a pair of upper and lower backup rolls supporting the upper and lower work rolls, respectively, a roll bending device for applying a bending force to the upper and lower work rolls, and a roll shift device for shifting the upper and lower work rolls in an axial direction of the work rolls. Each of the upper and lower work rolls has a curved initial crown portion formed on one side portion of a barrel of the work roll which is not less than a half of the length of the work roll barrel, and a substantially cylindrical initial crown portion formed on the remainder of the work roll barrel. Teh curve of the curved initial crown portion approximates to a curve represented by the formula Y=X.sup.n, (n.gtoreq.1.Type: GrantFiled: April 12, 1991Date of Patent: December 29, 1992Assignee: Hitachi, Ltd.Inventors: Toshiyuki Kajiwara, Hideotoshi Nishi, Tokuji Sugiyama
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Patent number: 5099667Abstract: A system for preparing and applying a lubricant suspension containing graphite to tools or workpieces used in the thermal deformation of metals. The system includes a suspending device and an application device. A device for suspending solid lubricants, especially graphite-containing solid lubricants, in a carrier liquid, especially water. The essential element of the device is a ring nozzle downstream from which is a dispersing unit. A device for applying lubricant suspensions containing graphite to tools or workpieces in the thermal deformation of metals. The device has a suitable distributor which comprises one or more spray units.Type: GrantFiled: October 11, 1990Date of Patent: March 31, 1992Assignee: Lonza Ltd.Inventors: Rene Schmitter, Marco Lanini
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Patent number: 5081857Abstract: A method for cold rolling a strip is wherein brushing roll are provided to both the work rolls and the back up rolls of the temper mill, to remove particles from the surface of the rolls of the mill and suction ducts adjacent to the brushing rolls transport the foreign objects out of the mill system. The sucking speed at the duct is at least 5 m/sec., and preferably 8 m/sec. The length of the bristle is from 15 to 60 mm, the diameter thereof being from 0.15 mm to 1.0 mm, and the material thereof is selected from a group of nylon, propyrene, or a the mixture thereof. The density of the bristle with respect to the peripheral surface area of the brushing rolls for the work roll is from 55 to 85% by area. Abrasive grains with a grain size of #300 to #1200 are incorporated in the brush of said brushing roll which enhance the brushing ability.Type: GrantFiled: March 5, 1990Date of Patent: January 21, 1992Assignee: NKK CorporationInventors: Naoki Matsui, Shuichi Iwato, Shuji Kaneto, Takami Kubo, Masayuki Yamazaki, Shigeru Moriyama
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Patent number: 5046347Abstract: Coolant containment apparatus for a rolling mill in which aqueous coolant liquid is sprayed onto the upper and lower work roll surfaces by upper and lower spray heads only on the exit side of the mill, including an enclosure maintained at subatmospheric pressure and surrounding the upper spray head and adjacent upper work roll and backup roll surfaces, upper and lower air dam members extending along the edges of the enclosure above and below the spray head to define narrow air gaps at the roll surfaces, slippers connected to ends of the dam members and in rubbing contact with the rolls to maintain the gap widths constant, and seal members mounted on the roll supports at the ends of the mill and cooperating with the enclosure to confine the enclosure interior.Type: GrantFiled: October 10, 1989Date of Patent: September 10, 1991Assignee: Alcan International LimitedInventors: Bruno Crosato, Gordon Harrison
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Patent number: 5001915Abstract: A system for processing steel strips in a hot strip mill includes an apparatus and method for removing the oxide layer in the finishing mill process such that the final thickness of the oxide layer is much less than previously possible. In order to reduce the thickness of the oxide layer, the invention provides for the removal of oxide scales from the surface of the steel strips at a distance in front of the working rolls of the finishing mill that minimizes the time the strip is exposed to ambient conditions after it is descaled and before it is received between the pair of working rolls. By minimizing this exposure time, the thickness of the oxide layers in the finished strips is substantially reduced.Type: GrantFiled: August 24, 1988Date of Patent: March 26, 1991Assignee: David T. BlazevicInventor: David T. Blazevic
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Patent number: 4996858Abstract: The apparatus for support of a roll in a rolling mill comprises a single supporting member having a longitudinally-extending elliptically-cross sectioned shell-like cavity extending over the entire length of the roll and engaging the roll so it rests in the shell-like cavity and a plurality of crescent-shaped plastic blocking pieces spaced from each other transversely along the supporting member in the shell-like cavity to divide it into a plurality of pressurized chambers to which a plurality of pressurized medium lines are connected. Each of the blocking pieces are provided with a plurality of openings for a lubricant and can be provided with compression springs to urge the blocking piece toward the roll.Type: GrantFiled: April 11, 1989Date of Patent: March 5, 1991Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Erich Stoy, Hans Rommen, Dieter Rumpf
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Patent number: 4986178Abstract: Holding arrangement for a device directed against a linearly adjustable roll, such as a doctor blade, blowing device or similar. On a holding arrangement for a device for surface treatment of the roll shell, directed against a linearly adjustable roll, where the roll is endways mounted through a bearing housing each in a machine frame, where for each bearing housing a cylinder/piston unit is provided for displacement of the roll, and where the roll is removable from the machine frame together with the bearing housings, a holder plate is arranged between the bearing housing and the piston of the cylinder/piston unit, which holder plate is connected with a support bearing for the device for surface treatment of the roll shell. Available is thus a holding arrangement of the categorial type which relative to the roll is well adjustable, which need not be lifted off as the roll contacts the opposite roll and which overall can be so integrated that it remains on the machine frame as the roll is lifted off.Type: GrantFiled: April 25, 1989Date of Patent: January 22, 1991Assignee: J.M. Voith GmbHInventors: Paul Hafner, Christian Schiel
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Patent number: 4974437Abstract: A strip mill has the strip deflectors, the strip guide tables, the spray devices for cooling the working rolls and the strip lifters all disposed in the region of the working rolls in a readily accessible structural unit which also forms the guide rails upon which the journal blocks for the working rolls are guided for withdrawal of the working rolls from the mill stand. The unit is connected with our integrated in the working roll bending blocks and parts of the unit are connected with the latter by an inclined groove and rib arrangement.Type: GrantFiled: July 6, 1989Date of Patent: December 4, 1990Assignee: SMS Schloemann-Siemag AktiengesellschaftInventor: Gunter Schiller
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Patent number: 4949566Abstract: Cold rolling metal strip with a rolling lubricant of petroleum solvent mixed with polyalkylene glycol. Where a sump collects said rolling lubricant after use for reuse in such rolling, also using mixtures of such components to lubricate parts of the rolling mill where leakage of the parts lubricants could be collected in the sump.Type: GrantFiled: September 11, 1989Date of Patent: August 21, 1990Inventor: Robert Eichelbaum
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Patent number: 4939920Abstract: The monitoring device is constructed in such a way that the temperature measurement takes place directly at the bearing and there is no need for detaching connecting lines during changing of rolls. The main features of the monitoring device for roll bearings, installed, for example, in the chock (1) of the work roll (3) of a roll stand, reside in a thermal limit value pickup (6) in contact with the roll bearing (7), as well as in a mechanical, spring-loaded transmission member (8) locked in place in the chock (1) by way of the limit value pickup, for acting on a signal generator (9) arranged outside of the chock (1) in the roll stand, this signal generator being actuated to shut down the rolling mill by automatic outward movement of the transmission member (8) after releasing its locking device by the limit value pickup (6) upon reaching a limit temperature of the roll bearing (7). The monitoring device is preferably intended for use in thin-gage strip and foil rolling mills having high rolling speeds.Type: GrantFiled: May 11, 1988Date of Patent: July 10, 1990Assignee: Achenbach Buschhutten GmbHInventors: Werner Stahl, Axel Barten
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Patent number: 4936127Abstract: The method of making copper rod by rolling is significantly improved by effectively controlling the water-soluble oil emulsion used to lubricate the rolls by employing a conductivity probe to maintain the conductivity of the emulsion within desired operating limits.Type: GrantFiled: May 25, 1989Date of Patent: June 26, 1990Assignee: Asarco IncorporatedInventor: Darrel W. Breitling
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Patent number: 4930380Abstract: When rolls in a rolling mill are repaired, a roll stand is first dismounted from the rolling mill. Then the dismounted roll stand is secured and the rolls are brought near to a housing of the roll stand in the axial direction of the roll. In this situation the rolls are cut. After the rolls have been cut, the roll stand is released from being secured. Then the roll stand is mounted on the rolling mill.A cutting apparatus used for cutting rolls comprises a base frame and a stand mounted on the base frame for placing the roll stand thereon. The housing of the roll stand placed on the stand is secured against the base frame. Furthermore, the rolls of the roll stand are brought near to the housing in the axial direction of the roll and are located. In the situation located against the housing, the rolls are rotated by a roll rotating apparatus and cut with a cutting tool.Type: GrantFiled: July 22, 1988Date of Patent: June 5, 1990Assignee: Daidotokushuko KabushikikaishaInventors: Takeshi Sasaki, Yoshio Takakuwa, Takayuki Haruna, Kiyoharu Yamada
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Patent number: 4912955Abstract: A spray system for use in a rolling mill comprises a carriage assembly mounted on linear bearings for movement along an X-axis parallel to an horizontal line passing through the bite of two superposed work rolls, two spray manifolds mounted on the carriage assembly along a Y-axis parallel to a vertical centerline passing through the work rolls, each manifold containing at least one spray nozzle for setting a predetermined spray pattern on each work roll, a carriage traverse mechanism for adjusting the traverse position of the carriage assembly along the X-axis, and two manifold lift mechanisms mounted on the carriage assembly to independently adjust the position of each spray manifold along the Y-axis.Type: GrantFiled: December 5, 1988Date of Patent: April 3, 1990Assignee: Norandal USA Inc.Inventor: Thomas B. Stines
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Patent number: 4864838Abstract: To avoid impacts on the first pass of the rolled product through a universal rolling mill the vertical rolls of the rolling mill can be provided with their own integral drive according to our invention. In an electrical drive for a vertical roll the vertical roll is the rotor of an electric motor while the stator is a circular collar on a nonrotatable supporting axle for the vertical roll. In a hydraulic drive for a vertical roll a hydraulic motor is either located in a housing side extension of the structural member supporting the vertical roll to drive it from the outside by spur wheel gearing or by a frictional drive or the hydraulic motor is mounted in the nonrotating supporting axle of the vertical roll and engages on an inner cogged drive ring on the vertical roll from the inside by spur gearing positioned on a transverse plane.Type: GrantFiled: August 14, 1987Date of Patent: September 12, 1989Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Georg Engel, Hans-Heinrich Hartmann, Peter Koethe, Alexandr Svagr, Bernd Onderka
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Patent number: 4827751Abstract: A device for machining a plurality of rolls (4) which are mounted ready for use in a rolling stand (3) and form a common sizing pass (6) has at least one tool (5) which is disposed outside the sizing pass (6) for machining the working surfaces of the roll. In order that the shape and size of the sizing pass formed by the rolls is as accurate as possible, a measuring device (8) engages in the sizing pass (6), and a computer (10) compares its actual values with predetermined desired values, the resulting error signals being used to control the tool via servomotors (13, 14).Type: GrantFiled: July 31, 1987Date of Patent: May 9, 1989Assignee: Kocks Technik GmbH & Co.Inventor: Helmut Holthoff
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Patent number: 4817410Abstract: A roll for a mill includes a roll shaft having a tapered portion disposed intermediate opposite ends thereof. The tapered portion has an outer peripheral surface tapering axially of the roll shaft. A ring of a wear-resistant material is disposed around the tapered portion of the roll shaft. A tubular sleeve having an inner peripheral surface tapering axially thereof is press-fitted between the tapered portion of the roll shaft and the ring to retain the ring in place on the roll shaft for rotation therewith. The sleeve includes an inner groove formed in the inner peripheral surface thereof and a passageway formed therethrough. The passageway is communicated with the inner groove so that pressurized oil is supplied through the passageway into the inner groove.Type: GrantFiled: June 4, 1987Date of Patent: April 4, 1989Assignees: Mitsubishi Kinzoku Kabushiki Kaisha, Nippon Steel CorporationInventors: Takashi Yatsuzuka, Tetsuya Ohba, Kouji Tanabe, Tatsuo Kojima, Tatsunobu Kobayashi, Kouki Katou
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Patent number: 4796450Abstract: A system for processing steel strips in a hot strip mill includes an apparatus and method for removing the oxide layer in the finishing mill process such that the final thickness of the oxide layer is much less than previously possible. In order to reduce the thickness of the oxide layer, the invention provides for the removal of oxide scales from the surface of the steel strips at a distance in front of the working rolls of the finishing mill that minimizes the time the strip is exposed to ambient conditions after it is descaled and before it is received between the pair of working rolls. By minimizing this exposure time, the thickness of the oxide layers in the finished strips is substantially reduced.Type: GrantFiled: September 22, 1986Date of Patent: January 10, 1989Inventor: David T. Blazevic
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Patent number: 4750343Abstract: The device for the detection and regulation of the planeness of strip-shaped rolled products, especially thin-gage strips (1), for cold rolling mills comprises a planeness measuring system with individual measuring elements, which system includes, for example, a planeness measuring roller (3) composed of individual measuring disks (4) with force measuring transmitters arranged along the circumference. By the planeness measuring roller (3), the strip tensile stress is measured over the strip width (5), from which is calculated the longitudinal distribution (.DELTA.L/L) over the strip width as a characteristic variable for the strip planeness. Regulation of the strip tensile stress is effected by installations for cooling and/or lubrication and/or bending and/or pivoting of the rolls.Type: GrantFiled: May 21, 1985Date of Patent: June 14, 1988Inventors: Gerhard Richter, Hans-Peter Richter, Axel Barten
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Patent number: 4741193Abstract: A roll cooling device for a rolling mill having rolls comprises cooling water guide plates each having a curved surface along a circumferential direction of rolls, the cooling water guide plates being provided close to the rolls, cooling water supply headers for supplying cooling water to cooling water passages defined by the cooling water guide plate and the rolls, water discharge headers for discharging the cooling water, supplied by the water supply headers, from the cooling water passages, support members supporting the cooling water guide plates, and curvature adjusting members for changing curvature of the guide plates in accordance with a diameter of the rolls. A thickness of the guide plate is increased from each edge portion to a central portion of the guide plate in the circumferential direction of the roll. In the case where the roll diameter is largely changed, the clearance between the guide plate and the roll is kept suitably, thereby sufficiently cool the rolls.Type: GrantFiled: May 16, 1986Date of Patent: May 3, 1988Assignees: Hitachi, Ltd., Kawasaki Steel CorporationInventors: Tomoaki Kimura, Yoshio Takakura, Sakae Nishimura, Nobuyoshi Sasaki, Toshio Ohki, Yoshito Kawai
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Patent number: 4718264Abstract: A rolling mill comprises a plurality of rolls, means for directing liquid coolant onto the rolls at the ingoing side of the mill and a casing or casings enclosing the directing means. The casing or casings have contact seals engaging the rolls to prevent unwanted egress of coolant onto work entering the mill. The means for directing coolant onto the rolls are mounted on one or more fixed backing supports and inflatable sealing means are arranged between the casing or casings and the fixed backing support or supports. The arrangement enables the position of the casing or casings to adjust dependent on the roll diameters.Type: GrantFiled: June 6, 1986Date of Patent: January 12, 1988Assignee: Davy McKee (Poole) LimitedInventors: David W. Guppy, Neil Winkley, Joseph L. Watson
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Patent number: 4709568Abstract: A rolling mill has a plurality of rolls, means to direct liquid coolant on to the rolls at the ingoing side of the mill mounted on backing supports and a casing or casings enclosing the directing means during operation. The casing or casings have contact seals engaging the rolls to prevent unwanted egress of coolant on to work entering the mill. Sealing means are provided between the casing or casings and the backing support or supports and the casing or casings can be withdrawn from the mill for maintenance purposes independently of said one or more backing supports.Type: GrantFiled: June 10, 1986Date of Patent: December 1, 1987Assignee: Davy McKee (Poole) LimitedInventors: Roy M. Ticehurst, Joseph L. Watson
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Patent number: 4706485Abstract: A portable carrier module for transporting work rolls and entry and exit guides to and from a cantilevered roll stand in a rolling mill. The carrier module remains removably mounted on the roll stand during the rolling operation, and includes integral roll cooling means automatically coupled to water supply conduits extending through the roll stand housing.Type: GrantFiled: December 15, 1986Date of Patent: November 17, 1987Assignee: Morgan Construction CompanyInventors: Martin Gilvar, Harold E. Woodrow, Camille S. Nasrah
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Patent number: 4706480Abstract: A metal rolling mill coolant spraying system for minimizing formation of tight edges of rolled strip. The system comprises supplemental assemblies for spraying the work rolls adjacent to the strip edges, mounted for lateral adjustment controlled in response to signals from a computer for initial setup or continuous operation based on shape meter roll edge rotor signal feedback.Type: GrantFiled: December 3, 1986Date of Patent: November 17, 1987Inventor: Joseph D. Svatos
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Patent number: 4691549Abstract: A substantial amount of liquid lubricant used in a cold strip rolling mill is prevented from passing between the area of the work roll necks and work roll bodies not in contact with a strip by locating in a strip guiding means on the entry side adjacent both edges of the strip, several zoned air nozzles which delivery a positive pressure to force the liquid away from this area, in a direction toward the center of the strip and rolls, and which nozzles are controlled according to the width of strip being rolled. The relatively small amount of liquid finding its way onto the delivery side is removed from the strip by providing in the strip guiding means both positive and negative air pressure means located above and below the strip, and negatively pressurized longitudinal enclosures located adjacent both edges of the strip and the said area.Type: GrantFiled: November 7, 1984Date of Patent: September 8, 1987Assignee: United Engineering Rolling Mills, Inc.Inventor: James R. Adair