EP0049425A2 - Procédé et dispositif pour laminer une bande sans tension - Google Patents

Procédé et dispositif pour laminer une bande sans tension Download PDF

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Publication number
EP0049425A2
EP0049425A2 EP81107609A EP81107609A EP0049425A2 EP 0049425 A2 EP0049425 A2 EP 0049425A2 EP 81107609 A EP81107609 A EP 81107609A EP 81107609 A EP81107609 A EP 81107609A EP 0049425 A2 EP0049425 A2 EP 0049425A2
Authority
EP
European Patent Office
Prior art keywords
liquid
arrangement according
valves
temperature
cooling
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.)
Granted
Application number
EP81107609A
Other languages
German (de)
English (en)
Other versions
EP0049425A3 (en
EP0049425B1 (fr
Inventor
Werner Schimion
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.)
SMS Group GmbH
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6113623&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0049425(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0049425A2 publication Critical patent/EP0049425A2/fr
Publication of EP0049425A3 publication Critical patent/EP0049425A3/de
Application granted granted Critical
Publication of EP0049425B1 publication Critical patent/EP0049425B1/fr
Expired 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
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
    • B21B37/32—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by cooling, heating or lubricating the rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally

Definitions

  • the invention relates to a method for rolling tension-free rolled strip by thermally influencing the diameter of the rolls by regulating their axial temperature distribution by acting on these rolls with a cooling, lubricating and / or cleaning liquid, in which - -. the quantity of tension, pressure or temperature of the liquid determined behind the last stand in zones lying in the transverse direction of the rolled strip, and an arrangement for carrying out the method.
  • the invention has for its object to provide a method of the type mentioned and an arrangement for its implementation, in which short control times can be achieved with low creation, maintenance and operating costs, and which are applicable to all working conditions under which in cold rolling stands used in the steel industry work.
  • the required basic amount of the liquid can be predetermined in each case, so that a perfect basic cooling and a completely sufficient lubrication are ensured and even in the case of the use of cleaning liquids their optimal effect is ensured.
  • Effective cooling is only introduced in addition, so that the consumption of more cooled liquid is reduced to a minimum.
  • the structure is relatively simple since expensive mixing valves are dispensed with and simple control valves or even simple shut-off valves can replace them.
  • FIG. 1 is a perspective view of a cold-rolled strip 1 made of steel, which is guided between the work rolls 2 and 3 of a four-high cold stand, not shown, which are supported by support rolls 4 and 5.
  • the emerging cold rolling strip 1 runs with a small wrap angle around a strip tension measuring roller 6, which is able to measure the respective strip tension in axially successive jacket zones.
  • the measured values obtained are dissipated via the slip ring system 7.
  • the rollers 2 to 5 are assigned cooling bars 8 to 13 which are equipped with nozzles for dispensing liquid.
  • the division of these nozzles is adapted to that of the zones of the belt tension measuring roller 6, and in the exemplary embodiment the cooling bars each have 52 mm two nozzles which can be fed with liquid jointly and separately from the others.
  • the cooling beams 8 and 9 are assigned to the support rollers 4 and 5, and they are subjected to a constant liquid flow in an adjustable width and intensity in order to achieve a predetermined basic lubrication and cooling.
  • the cooling beams 10 and 11 of the work rolls 2 and 3 are subjected to an adjustable width and intensity.
  • the cooling beams 12 and 13 arranged upstream of the roll gap are subjected to a liquid whose temperature is lower than that supplied to the cooling beams 8 to 11, and their intensity is adjusted as a function of the tensile stresses determined for the zone in question such that the differences in tensile stresses in the different zones are brought to zero.
  • the supply with liquid takes place from two separate reservoirs 14 and 15, one of which contains liquid of the commonly used temperature, for example 45 °, while the reservoir 15 contains liquid whose temperature is lower than that of the liquid of the 14th example.
  • the temperature in the reservoir 15 can be 25 ° C.
  • the reservoirs are filled in the usual way by returning liquid, and under certain circumstances the reservoir 15 can be filled from the reservoir 14 via a cooler.
  • the supply of the chilled beams takes place via the reservoirs 14 and 15 downstream feed pumps 16 and 17, the delivery head of which can be set independently of consumption by downstream pressure relief valves 18 and 19.
  • Filters 20 and 21 can be arranged downstream of the pressure relief valves, which filters can be bypassed in the event of clogging.
  • a cooler 22 is additionally shown, which may be able to effect additional cooling.
  • the feed pump 16 is followed by a plurality of valves 23 connected in parallel, the number of which corresponds to the number of zones of the chilled beams 8 to 11.
  • the first two and the last of the valves 23 are taken into account, and the corresponding downstream zones of the chilled beams 8 to 11 are fed in parallel.
  • the liquid discharged from the feed pump 17 is fed to a similar group of control valves 24, each of which feeds a zone of the cooling beams 12 and 13.
  • control valves 24 each of which feeds a zone of the cooling beams 12 and 13.
  • 31 valves are to be provided in accordance with the selected number of zones, of which only the two outermost are shown, and of which the one shown on the right feeds the corresponding outer zone of the cooling beams 12 and 13 in parallel.
  • the belt tension measuring roller 6 acts as an encoder for the control devices 26.
  • the encoder systems of the individual zones, in the exemplary embodiment 31, are connected to corresponding inputs of the control device 26 via the wires of a measuring line 25.
  • the outputs of the individual regulators of the regulating device act via the cores of the actuating line 27 on the regulating valves 24 provided as actuators.
  • a fixed value regulation can be provided.
  • the sensors provided as sensors of the controlled system are arranged downstream of the roll gap by approx. 1000 to 2000 mm, so that the controlled system is not only affected by the thermal inertia of the respective zone of the roll shell Use of liquid at a lower temperature and thus the increase in the temperature difference when it is acted upon is reduced, but additionally the L times make themselves unpleasantly noticeable, which result from the migration of the liquid-loaded points of a roller into the roll gap and from the cold rolling strip emerging from the roll gap to the strip tension measuring roller 6.
  • the control characteristic is to be designed in such a way that the build-up of control vibrations is avoided.
  • the invention shows ways to obtain an effective thermal allmaschinesregelung B by applying a second liquid of lower temperature, which is also relatively fast-acting and therefore is able to compensate for short-term voltage fluctuations. It proves to be advantageous here that both the control device and the valves controlling the additional liquid flow as actuators have a relatively simple structure and thus enable an inexpensive system.
  • the display device usually provided for tension distribution in the transverse direction of the belt is also appropriately taken into account here, but is not shown in the exemplary embodiment to simplify the illustration.
  • the regulation can also be favorably influenced by the fact that 28 disturbance variables and 29 reference variables can be introduced via inputs.
  • the setting of the valves 23 can be carried out manually or controlled manually.
  • the basic cooling be adapted to the respective working conditions; the nozzles lying outside the width of the respective rolled strip can be switched off, and those located in the edge areas of the respective rolling program can be loaded in such a way that a favorable thermal setting of the crowning also results in the transition area to the unloaded roll shell.
  • zone deactivation can prevent the application of liquid to the side of the end face of axially displaced rollers past or in their location area. It has also been shown to be advantageous that the basic lubrication can be effected at the temperature recognized as advantageous, so that the viscosity of the oil used or emulsified can be set as optimally as the droplet size in emulsions.
  • Vegetable or animal fats can also be used at the appropriate temperature.
  • the temperature can also be set here in such a way that an optimal cleaning effect and thus extensive use of the cleaning fluid are achieved: the basic lubrication or cleaning has only a minor influence on the respective roller temperature; Rather, this is determined by the controllable addition of the low-temperature liquid, and here it is possible to make do with relatively little additional, colder liquid by using the higher temperature difference, supported by loading the rollers over a larger circumferential area, so that there are also lower operating costs surrender.
  • the arrangement chosen in the recommended exemplary embodiment can be varied in many ways; for example, it is possible, as already mentioned, to arrange separate valves in front of the nozzles of a zone of the cooling beams and to dispense with zones of different cooling beams of the same type operating in parallel.
  • a simply constructed and maintenance-friendly supply of the liquids can be achieved by the cooling beams being equipped with one or more liquid connections acting in parallel and the valves, carried by the cooling beams, being arranged directly upstream of the nozzles. They can be partially or completely embedded in the chilled beams. Strong current and thus pressure fluctuations that occur when switching the valves can be reduced by adding additional pressure control valves to the valves at a short distance or via short lines are arranged or the pressure control valves 18 and 19 shown in FIG.
  • valves 23 and control valves 24 are arranged directly upstream of the valves 23 and control valves 24.
  • a further reduction of pressure changes occurring during switching on and switching off can be achieved by the pressure accumulators 30 and 31 being arranged upstream of the valves 23 and control valves 24, likewise via short lines and thus small masses of liquid to be accelerated.
  • the liquid of the lower temperature can be obtained by a simple cooler.
  • a simple control and in particular a simple and therefore low-maintenance and inexpensive design of the control valves result if no analog control is carried out, but the controllers work according to the two-point or three-point principle.
  • the switch-on duration and / or the switch-on pauses can be varied such that the different cooling effects to be regulated result.
  • an average value of the individual zone measurements can be determined, which can be used as the setpoint of the control variable.
  • a target value arbitrarily or to form it from the reel train: The only thing that is important is that the tensions in the individual zones are guided against a common mean value, so that after the end of the reel train there are no tensions that deform the rolled strip.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
EP81107609A 1980-10-04 1981-09-24 Procédé et dispositif pour laminer une bande sans tension Expired EP0049425B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803037584 DE3037584A1 (de) 1980-10-04 1980-10-04 Verfahren und anordnung zum walzen von spannungsfreiem walzband
DE3037584 1980-10-04

Publications (3)

Publication Number Publication Date
EP0049425A2 true EP0049425A2 (fr) 1982-04-14
EP0049425A3 EP0049425A3 (en) 1983-01-26
EP0049425B1 EP0049425B1 (fr) 1986-03-19

Family

ID=6113623

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81107609A Expired EP0049425B1 (fr) 1980-10-04 1981-09-24 Procédé et dispositif pour laminer une bande sans tension

Country Status (3)

Country Link
EP (1) EP0049425B1 (fr)
JP (1) JPS5791803A (fr)
DE (2) DE3037584A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3419261A1 (de) * 1984-05-23 1985-11-28 Achenbach Buschhütten GmbH, 5910 Kreuztal Einrichtung zum erfassen und regeln der planheit von bandfoermigem walzgut, insbesondere feinbaendern, fuer kaltwalzwerke
EP0181785A1 (fr) * 1984-11-14 1986-05-21 Measurex Corporation Méthode et procédé de contrôle du profilé d'une bande métallique
DE3523483A1 (de) * 1985-07-01 1987-01-08 Achenbach Buschhuetten Gmbh Walzenkuehl- und/oder schmiervorrichtung fuer kaltbandwalzwerke, insbesondere feinbandwalzwerke

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3607527A1 (de) * 1986-03-07 1987-09-10 Achenbach Buschhuetten Gmbh Vorrichtung zum regeln der planheit und dicke von walzband in einem mehrwalzen-bandwalzgeruest
CN111974801A (zh) * 2020-08-13 2020-11-24 无锡市城南带钢有限公司 热轧带钢的生产方法

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2226500A (en) * 1935-05-09 1940-12-24 Edgar J Griffiths Method and apparatus for making sheet metal
US3225580A (en) * 1963-04-24 1965-12-28 United States Steel Corp Reduction of edge taper in strip rolling
FR1597078A (fr) * 1968-11-27 1970-06-22
FR2027712A1 (fr) * 1969-01-03 1970-10-02 Alcan Res & Dev
US3616669A (en) * 1969-06-13 1971-11-02 United Eng Foundry Co Method of and apparatus for rolling flat strip
FR2118902A1 (en) * 1970-12-22 1972-08-04 Kobe Steel Ltd Cold strip mill working roll surface temp control - - by means of pyrometers and cooling oil spray nozzles
US3802237A (en) * 1972-05-26 1974-04-09 United States Steel Corp Localized strip shape control and display
DE2750047A1 (de) * 1976-11-22 1978-06-01 Asea Ab Regelanordnung in bandwalzwerken zur beseitigung eines ungleich ueber die breite des bandmaterials verteilten bandzuges
GB2012198A (en) * 1977-11-25 1979-07-25 Loewy Robertson Eng Co Ltd Strip rolling mills
GB2015401A (en) * 1978-03-06 1979-09-12 Vaassen Aluminium A Method for Controlling the Flatness of Cold-rolled Plates and Foils

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3709012A (en) * 1971-01-04 1973-01-09 Nalco Chemical Co Hot rolling mill lubrication apparatus and process
JPS4893508A (fr) * 1972-03-10 1973-12-04
JPS55122609A (en) * 1979-03-14 1980-09-20 Sumitomo Metal Ind Ltd Controlling method for crown of work roll

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2226500A (en) * 1935-05-09 1940-12-24 Edgar J Griffiths Method and apparatus for making sheet metal
US3225580A (en) * 1963-04-24 1965-12-28 United States Steel Corp Reduction of edge taper in strip rolling
FR1597078A (fr) * 1968-11-27 1970-06-22
FR2027712A1 (fr) * 1969-01-03 1970-10-02 Alcan Res & Dev
US3616669A (en) * 1969-06-13 1971-11-02 United Eng Foundry Co Method of and apparatus for rolling flat strip
FR2118902A1 (en) * 1970-12-22 1972-08-04 Kobe Steel Ltd Cold strip mill working roll surface temp control - - by means of pyrometers and cooling oil spray nozzles
US3802237A (en) * 1972-05-26 1974-04-09 United States Steel Corp Localized strip shape control and display
DE2750047A1 (de) * 1976-11-22 1978-06-01 Asea Ab Regelanordnung in bandwalzwerken zur beseitigung eines ungleich ueber die breite des bandmaterials verteilten bandzuges
GB2012198A (en) * 1977-11-25 1979-07-25 Loewy Robertson Eng Co Ltd Strip rolling mills
GB2015401A (en) * 1978-03-06 1979-09-12 Vaassen Aluminium A Method for Controlling the Flatness of Cold-rolled Plates and Foils

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3419261A1 (de) * 1984-05-23 1985-11-28 Achenbach Buschhütten GmbH, 5910 Kreuztal Einrichtung zum erfassen und regeln der planheit von bandfoermigem walzgut, insbesondere feinbaendern, fuer kaltwalzwerke
GB2160136A (en) * 1984-05-23 1985-12-18 Achenbach Buschhuetten Gmbh Apparatus for cold rolling mills for detecting and controlling the flatness of rolled strip
US4750343A (en) * 1984-05-23 1988-06-14 Gerhard Richter Device for detecting and regulating the planeness of strip-shaped rolled products, especially thin-gage strips, for cold rolling mills
EP0181785A1 (fr) * 1984-11-14 1986-05-21 Measurex Corporation Méthode et procédé de contrôle du profilé d'une bande métallique
DE3523483A1 (de) * 1985-07-01 1987-01-08 Achenbach Buschhuetten Gmbh Walzenkuehl- und/oder schmiervorrichtung fuer kaltbandwalzwerke, insbesondere feinbandwalzwerke

Also Published As

Publication number Publication date
DE3174134D1 (en) 1986-04-24
DE3037584A1 (de) 1982-05-19
JPH0355201B2 (fr) 1991-08-22
JPS5791803A (en) 1982-06-08
EP0049425A3 (en) 1983-01-26
EP0049425B1 (fr) 1986-03-19

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