EP0114535A1 - Vorrichtung zum Entfernen einer Flüssigkeit von einem Walzband während des Walzvorganges und entsprechendes Verfahren hierzu - Google Patents

Vorrichtung zum Entfernen einer Flüssigkeit von einem Walzband während des Walzvorganges und entsprechendes Verfahren hierzu Download PDF

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Publication number
EP0114535A1
EP0114535A1 EP83400146A EP83400146A EP0114535A1 EP 0114535 A1 EP0114535 A1 EP 0114535A1 EP 83400146 A EP83400146 A EP 83400146A EP 83400146 A EP83400146 A EP 83400146A EP 0114535 A1 EP0114535 A1 EP 0114535A1
Authority
EP
European Patent Office
Prior art keywords
strip
edges
liquid
compressed air
cylinders
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP83400146A
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English (en)
French (fr)
Inventor
James R. Adair
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wean United Inc
Original Assignee
Wean United Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wean United Inc filed Critical Wean United Inc
Priority to EP83400146A priority Critical patent/EP0114535A1/de
Publication of EP0114535A1 publication Critical patent/EP0114535A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/14—Guiding, positioning or aligning work
    • B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0269—Cleaning
    • B21B45/0275—Cleaning devices
    • B21B45/0278—Cleaning devices removing liquids

Definitions

  • the present invention relates to a device for removing a liquid from a strip, such as for example an aluminum strip, during rolling in a rolling mill stand, in order to prevent a large quantity of the liquid projected onto the working rolls of the rolling mill. to penetrate during rolling into the non-rolling zone of the opening between working rolls, as well as to eliminate the liquid which manages to reach the exit side, for example by passing through the zone without rolling.
  • a strip such as for example an aluminum strip
  • the invention also relates to the corresponding method of removing liquid from the strip.
  • a lubricating or cooling liquid is applied to the working rolls and to the strip, for various reasons such as, for example, the reduction of the wear of the rolls, improvement of the surface quality of the strip, reduction of the friction heat appearing during rolling, etc.
  • the refrigerant applied to the working rolls is found on the upper faces and bottom of the band.
  • This refrigerant or lubricant is generally an oil-in-water emulsion. If this water-based liquid remains on the surface of the strip for some time it tends to soil or damage the strip, which is sought to be avoided for many commercial reasons.
  • the invention relates to a device and a method making it possible to retain and eliminate from the strip most of the liquid on the inlet side, and making it possible to remove the residual liquid from the outlet side either on a continuous tandem train or a single rolling stand so that the rolling area is free of excess liquid to prevent damage to the strip surfaces.
  • the invention applies to a device for removing a liquid from a strip during rolling, on a rolling stand with an inlet side and an outlet side, in which the opening between the working rolls has a rolling where the strip passes along its line of passage, and a non-rolling zone from the edges of the strip to the end of the rolls, in which also a lubricating liquid is applied to the rolls on the inlet side, and in which is used on the inlet side a system for guiding the strip between the cylinders.
  • the entry guide system comprises a device incorporated with compressed air, arranged transversely beyond the edges of the strip and covering a longitudinal portion of the upper face of the strip in the immediate vicinity of the opening between cylinders ; the compressed air device is arranged so as to separate the lubricating liquid from the opening between the cylinders "to direct it towards the central part of the strip so that at least a significant quantity of the lubricant accumulated on the upper face of the strip on the inlet side cannot enter the opening between cylinders or reach the side: outlet from the cage.
  • the outlet guide system comprises a compressed air device arranged transversely beyond the edges of the strip and covering a longitudinal portion of the upper face of the strip in the immediate vicinity of the opening between cylinders, and the compressed air device is arranged so as to direct the lubricant, on the upper face of the strip on the outlet side, from the center of the strip towards its edges.
  • Figure 1 illustrates the basic problem of liquid build-up that occurs when coolant is applied to the inlet side strip.
  • This view is represented by looking at the rolling mill on the input side while the strip S passes between the upper and lower working rolls WR.
  • Cross hatching indicates, in exaggerated form, an opening or zone F representing a non-rolling zone between the edges of the strip and the ends of the working rolls.
  • the continuous action of the strip passing between the working rolls causes the liquid to flow along the edges of the strip as far as zone F and towards the exit side of the rolling mill.
  • Figures 2 to 10 illustrate the present invention on a quarto cage of a rolling mill. It will be noted that the system according to the invention can be used both on a single cage and on several cages of a continuous tandem train, and that the cages can comprise more or less than four cylinders.
  • the long arrow shown in several of Figures 2 to 10 indicates the direction of movement of the strip.
  • a cage 14 of a cold rolling mill is equipped with two support rolls 16-18, supporting two working rolls 20-22, these forming an opening through which passes an aluminum strip S following the line of passage of the cage.
  • the area of the rolls which is in contact with the strip is the rolling area and that which is not in contact with the strip is desired. identified as the area outside rolling.
  • the guide system 24, on the inlet side, is mounted on a set of tensioning rollers 28, of which Figures 2 and 3 show two rollers 30; this tensioner assembly is movable between the uprights by conventional means not shown, to move it away or bring it closer to the c y l i n - dres.
  • the upright on the inlet side is shown at 29.
  • the guide system 26 on the outlet side is fixed to the upright on the outlet side of the cage 14 (represented by the reference 32 in FIG. 5) in a manner which will be explained below, to allow movement horizontal to bring it closer or away from the cylinders and a vertical movement to bring it closer or away from the strip.
  • the coolant or lubricant is sprayed onto the working cylinders 20-22 by sprinkler blocks 34 located on the inlet side. At its exit from the working rolls, the strip passes to another cage or is wound on a winder not shown.
  • air or a pressurized fluid from the inlet guide system 24 to retain most of the liquid accumulated on the strip before it enters between the cylinders, and the sprayed lubricant which manages to escape to the side outlet and which is deposited on the strip due to the rotation of the cylinders is then eliminated both by pressurized air and by a suction actuated by the outlet guide system 26.
  • Figures 3 and 4 show in more detail the entry system 24 of the strip, which comprises an upper part 36 and a lower part 38 between which the strip passes.
  • These two elements 36 and 38 comprise an element 40 which extends over the entire width between the uprights 29.
  • the length of the nozzle block is designed to suit both the maximum and minimum width of the strips. As can be seen in FIG.
  • the opening of the nozzles 44 of the upper part 36 passes entirely through the block 42, while that that of the lower part 38 extends only a short distance downward on the lower face of the block 42.
  • the openings of the nozzles 44 are inclined so as to send pressurized air to the central part of the cylinders and tape.
  • the nozzles in the upper part 36 direct the air both against the surface of the upper working cylinder and on the surface and upper edges Of the band ; the nozzles of the lower part 38 direct the air onto the surface of the lower working cylinder 22.
  • the nozzles 44 are directed towards the central part of the strip and of the cylinders so as to maintain the lubricant on the upper part of the strip and on the working cylinders.
  • FIG. 4 shows the pneumatic solenoid valves 46 connected to one or more longitudinal drilled channels 48, which in turn communicate with two nozzles 44. As shown see in FIG. 4 the nozzles situated at the ends of the block 42 are connected to the longitudinal channels 48 by means of transverse channels 50.
  • the element 40 of the upper part 36 is bolted to the side of the tensioning assembly 28 by means of a support 52.
  • a support 52 For reasons of simplification of the drawing, only one end of the element 40 is shown, but it It is obvious that the other end of this element 40 is symmetrical relative to the axis of the strip.
  • the construction and the arrangement of the lower part 38 as well as its mounting on the tensioning assembly, although not shown in a plan view, are similar to those of the upper part 36.
  • Each of the pneumatic solenoid valves 46 can be regulated to provide an air pressure depending on the width of the laminated strip.
  • a strip of maximum width is laminated, thereby creating a minimum length opening between the edges of the strip and the ends of the cylinder tables, the nozzles located at the very end of the working rolls and the strip will be put into action because even if the length of the opening is small, it is still desirable to prevent the lubricant from leaving the ends of the two tables of working rolls, and to prevent the nozzles 44 from eliminating the band too much of the lubricant needed for rolling, especially with regard to the upper part 36. If a strip of minimum width is rolled, thus creating an opening of maximum width, all the nozzles will then be in service.
  • the nozzles 44 of the cylinders give their maximum efficiency by preventing the lubricant from escaping from the ends of the cylinder tables.
  • the nozzles are selectively controlled by means of a control 54 to allow them to deliver pressurized air so as to expel the lubricant towards the central part of the cylinders, and in the case of the upper block 42 also towards the central part of the strip.
  • Most of the liquid accumulated on the upper part of the strip is entrained out of the rolling zone, in the direction opposite to the running of the strip, and away from the rotating parts of the rolling zone.
  • the opening, or non-rolling zone, formed outside the strip along the cylinders, would allow the lubricant to infiltrate between the cylinders towards the exit of the cage.
  • pressurized air is directed into this opening over the entire length of the cylinders to return; the lubricant to the central part of the belt and the cylinders, thus preventing a large quantity of liquid from leaving the entry side of the cage.
  • the nozzle and solenoid valve system of the lower part 38 of the entry guide will operate in phase with the system of the upper part 36.
  • FIGS. 5 to 10 show only one side of the guiding system. exit up to approximately the axis of the strip, and it is understood that this exit guide system is symmetrical with respect to this axis.
  • Figure 5 shows an assembly of the tape exit guide system according to the invention; it consists of an upper part 56 and a lower part 58.
  • the upper part 56 of the output guide consists of two elements 60 and 62 which extend over the entire width of the cage.
  • the element 60 is located in the immediate vicinity of the rolling zone and supports a block 64 consisting of a row of pressurized air nozzles; this block 64 does not go up to the axis of the strip but is provided so as to cover the edges of the strips of maximum width and minimal.
  • the block 64 is parallel to that of the tape entry guide system 24 (FIG. 3). Pressurized air is sent to the nozzles of block 64 via line 66.
  • the element 62 supports two blocks of nozzle ramps 68 and 70, each consisting of a row of nozzles separated into three groups by parts 72. Each group is supplied separately with pressurized air by pipes 74 and each group can be activated according to the width of the laminated strips (more detailed explanations will be given later). In each group the nozzles are interconnected by means not shown to ensure the passage of air from one to the other.
  • the compressed air outlets 78 of all the nozzles of the three groups 64, 68 and 70 are directed downwards towards the upper surface of the strip via an opening 76 made in the elements 60 and 62.
  • Each nozzle is designed so that it can be adjusted by means of an adjustment device 80 to deliver the pressurized air at different angles relative to the strip, and the jet of pressurized air leaving the nozzles is here represented by three divergent lines extending from the nozzle, as seen in Figure 6.
  • each block 68, 70 constitutes a whole and is mounted on the element 62 using a suitable means, not shown; it can be removed and replaced as a whole in its place provided between the three enclosures.
  • the enclosure situated immediately to the left of each block of nozzles has an opening 88 running along the lower face of the upper part 56, directly above the line of passage of the strip.
  • these openings 88 are real slots, several of which run along the element 82 towards the axis of the strip.
  • Each slot 88 is of a length corresponding to the distance between two successive nozzles.
  • a circular opening 90 is provided in each enclosure for the connection of a hose 92 which keeps the enclosures 82 and 84 under vacuum.
  • Figure 6 shows that the nozzle blocks 68 and 70 and the enclosures 82 and 84 are inclined from right to left towards the axis of the strip. If this axis were considered to be a focal point, the nozzle blocks and the speakers on the other side of the element 62 would be tilted upwards from right to left in a similar manner to that shown, left side so being like the image in a mirror the right side shown in Figure 6.
  • a herringbone pattern over the width of the cage. This herringbone configuration gives the nozzles an angle such that the air under pressure forces the lubricant adhering to the upper face of the strip to move away from the center towards the edges.
  • the nozzles of block 64 also have an angle for the same reason, namely to drive the lubricant towards the edge of the strip.
  • the upper part of the tape exit guide system operates as follows: the air pressure is sent via the nozzles of the blocks 64, 68 and 70 and a vacuum is created in the chambers 82 and 84.
  • the nozzles of the block 64 direct the lubricant towards the edges of the strip where it is then eliminated by a suction system which will be the subject of a brief explanation below.
  • the nozzle ramp 70 works with the suction enclosure 82 and the nozzle ramp 68 works with the suction enclosure 84 in order to remove the lubricant from the upper face of the strip. Besides the fact that it deflects the lubricant towards the edges of the strip, the force of the air pressure begins by expelling any liquid adhering to the surface.
  • the elements 60 and 62 are connected between them by means of a lateral element 92 provided with shoulders 94 and 96 which enter a U-shaped slideway 98 bolted to a plate 100, itself fixed to the wall of the upright 32.
  • the element 62 is articulated at 102 on the wall 92 so that, by means of the jack 104 (fig u - res 5 to 7), it can pivot relative to the element 60.
  • this movement is not shown in dashed lines in any of FIGS. 5, 6 or 7; it takes place when the strip is engaged in the cage.
  • the jack 104 is held, by means of the support 106, by the tubular spacer 108 which extends over the entire width of the cage and is supported and fixed in the wall 92 of the upper part 56.
  • the two elements 60 and 62 of the upper part 56 are separated as a block from the working cylinders 20 and 22 by means of a connection system 110 articulated on a jack 112 on each side of the upper part 56 (a single jack 112 is shown in Figure 7).
  • this jack 112 is mounted, by means of the support 114, on the wall of the upright 32 and at the other end is connected to a lever 116 of the connection system 110.
  • This lever 116 pivots on a balancing shaft 118 which extends over the entire width of the cage and is connected to the wall of the upright by means of the bearing 120 mounted on a support 122.
  • the slide 98 is inclined relative to the line of passage of the strip.
  • the operation of the jack 114 causes the upper part 56 to move up in the slide 98, in a horizontal position. In general this movement takes place during the replacement of the working cylinders.
  • This lower part 58 comprises the nozzle blocks 124 and 126 which, similarly to the blocks 68 and 70 of the upper part 56, are separated into three groups by the elements 128.
  • FIG. 8 we can see the enclosures 130 and 132 respectively to the left of the nozzle blocks 124 and 126.
  • a series of slots 133 in the lower part is provided on the length of each enclosure 130 and 132, and of the continuous openings 134 provided in the lower part 58 receive the air outlets of the nozzles of the assemblies 124 and 126.
  • Two flexible suction pipes 136 connected to circular openings 140 maintain in depression each of the suction chambers 130 and 132.
  • the nozzles and chambers of the lower part form a herringbone configuration across the cage.
  • the pressurized air expels the lubricant from the underside of the strip and directs most of it towards the edges, where it is then diverted down the passage line.
  • the two upper and lower systems, suction or vacuum include means, not shown, for bringing the lubricating liquid away from the outlet zone of the cage.
  • the lower part of the element 58 has an extension 142, shown in FIGS. 9 and 10, which engages in a U-shaped guide rail fixed to the wall of the upright 32 by means of a plate 146.
  • a rectangular suction enclosure 148 extending beyond the length of the lower part 58 as far as in the opening between the cylinders, is mounted in the two transverse slots 147 of the lower part 58 in order to ability to perform a transverse movement.
  • the part of this enclosure 148 which extends between the cylinders 20 and 22 in the immediate vicinity thereof has an opening capable of receiving all the lubricant passing between the cylinders.
  • the suction enclosure 148 is positioned immediately along the edges of the strip, leaving only sufficient space for the strip not to come into contact with the enclosure.
  • the movement away from the lower part 58 relative to the rolling zone is triggered by a jack similar to that described above for the upper part 56.
  • FIG. 10 shows half of the section along XX of figu- e r 8.
  • a support 152 mounted on the wall of the upright 32 and at the other end on a lever 154.
  • the lever 154 pivots on a balancing shaft 156 extending over the entire width of the cage; the shaft 56 is fixed to the wall of the upright by means of the bearing 158 and of the support 160.
  • the horizontal movement of the lower part 58 in the slide 144 is partially shown in dashed lines in FIG. 8.
  • Each of the nozzle groups in blocks 68, 70, 124, 126 located in the upper and lower parts 56 and 58 can be controlled individually or simultaneously depending on the width of the laminated strip as explained for the guide system 24 on the input side. If you laminate a strip of minimum width, you will only operate the two groups located outside the axis of the strip ( Figures 5 and 9). If it is necessary to laminate a maximum width all the groups of nozzles will send pressurized air to the strip.
  • the groups of the upper part 56 in correspondence with those of the lower part 58 can be controlled either in phase or in phase shift.
  • the pressurized air applied against the lower face of the strip expels and discharges the lubricant towards the edges of the strip.
  • the enclosure 130 works with the group of nozzles 124 and the enclosure 132 with the nozzles of the group 126 to extract most of the lubricant from the underside of the strip.
  • the lubricant escaping along the edges of the strip on the upper and lower faces of the latter is sucked into the chambers 148 and evacuated from the zone of the strip by means not shown.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
EP83400146A 1983-01-21 1983-01-21 Vorrichtung zum Entfernen einer Flüssigkeit von einem Walzband während des Walzvorganges und entsprechendes Verfahren hierzu Withdrawn EP0114535A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP83400146A EP0114535A1 (de) 1983-01-21 1983-01-21 Vorrichtung zum Entfernen einer Flüssigkeit von einem Walzband während des Walzvorganges und entsprechendes Verfahren hierzu

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Application Number Priority Date Filing Date Title
EP83400146A EP0114535A1 (de) 1983-01-21 1983-01-21 Vorrichtung zum Entfernen einer Flüssigkeit von einem Walzband während des Walzvorganges und entsprechendes Verfahren hierzu

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4709568A (en) * 1985-06-10 1987-12-01 Davy Mckee (Poole) Limited Lubrication of rolling mills
US4718264A (en) * 1985-06-10 1988-01-12 Davy Mckee (Poole) Limited Lubrication of rolling mills
FR2602700A1 (fr) * 1986-08-14 1988-02-19 Bertin & Cie Procede et dispositif de protection d'une bande en sortie de laminoir, en particulier contre les projections de liquide de laminage
WO2007022842A1 (de) * 2005-08-20 2007-03-01 Sms Demag Ag Walzanlage
CN104128375A (zh) * 2014-07-16 2014-11-05 江苏永钢集团有限公司 一种高线出口反吹气装置
CN105689418A (zh) * 2016-03-21 2016-06-22 安徽永杰铜业有限公司 一种具有带水控制功能的铜带轧机装置
CN107309284A (zh) * 2017-06-28 2017-11-03 柳州钢铁股份有限公司 清除冷连轧机带钢边部残留乳化液装置
CN108941221A (zh) * 2018-08-20 2018-12-07 洛阳新远大冶金成套设备有限公司 四辊冷轧机的轧制油系统
CN111360071A (zh) * 2020-03-10 2020-07-03 董翠萍 一种铝材加工用原料热挤压设备
CN113828653A (zh) * 2021-09-30 2021-12-24 攀钢集团西昌钢钒有限公司 一种辊缝风堵系统

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0010966A1 (de) * 1978-11-03 1980-05-14 DAVY McKEE (SHEFFIELD) LIMITED Tandem Walzwerk

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0010966A1 (de) * 1978-11-03 1980-05-14 DAVY McKEE (SHEFFIELD) LIMITED Tandem Walzwerk

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, vol. 4, no. 12 (C-71) 29 janvier 1980, page 21 C 71 & JP - A - 54 145 355 (KOBE SEIKOSHO K.K.) 13-11-1979 *
PATENTS ABSTRACTS OF JAPAN, vol. 4, no. 53, (M-8)[535], 19 avril 1980, page 117 M 8 & JP - A - 55 22434 (HITACHI SEISAKUSHO K.K.) 18-02-1980 *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4709568A (en) * 1985-06-10 1987-12-01 Davy Mckee (Poole) Limited Lubrication of rolling mills
US4718264A (en) * 1985-06-10 1988-01-12 Davy Mckee (Poole) Limited Lubrication of rolling mills
FR2602700A1 (fr) * 1986-08-14 1988-02-19 Bertin & Cie Procede et dispositif de protection d'une bande en sortie de laminoir, en particulier contre les projections de liquide de laminage
WO2007022842A1 (de) * 2005-08-20 2007-03-01 Sms Demag Ag Walzanlage
CN101213031B (zh) * 2005-08-20 2010-10-06 Sms西马格股份公司 轧制设备
US8186198B2 (en) 2005-08-20 2012-05-29 Sms Siemag Aktiengesellschaft Rolling installation
CN104128375A (zh) * 2014-07-16 2014-11-05 江苏永钢集团有限公司 一种高线出口反吹气装置
CN104128375B (zh) * 2014-07-16 2017-01-11 江苏永钢集团有限公司 一种高线出口反吹气装置
CN105689418A (zh) * 2016-03-21 2016-06-22 安徽永杰铜业有限公司 一种具有带水控制功能的铜带轧机装置
CN107309284A (zh) * 2017-06-28 2017-11-03 柳州钢铁股份有限公司 清除冷连轧机带钢边部残留乳化液装置
CN108941221A (zh) * 2018-08-20 2018-12-07 洛阳新远大冶金成套设备有限公司 四辊冷轧机的轧制油系统
CN111360071A (zh) * 2020-03-10 2020-07-03 董翠萍 一种铝材加工用原料热挤压设备
CN113828653A (zh) * 2021-09-30 2021-12-24 攀钢集团西昌钢钒有限公司 一种辊缝风堵系统

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Effective date: 19870804

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Inventor name: ADAIR, JAMES R.