EP0432531B1 - Dispositif pour refroidir des fils laminés - Google Patents

Dispositif pour refroidir des fils laminés Download PDF

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Publication number
EP0432531B1
EP0432531B1 EP90122275A EP90122275A EP0432531B1 EP 0432531 B1 EP0432531 B1 EP 0432531B1 EP 90122275 A EP90122275 A EP 90122275A EP 90122275 A EP90122275 A EP 90122275A EP 0432531 B1 EP0432531 B1 EP 0432531B1
Authority
EP
European Patent Office
Prior art keywords
cooling
wire
coil
feeder
equipment
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.)
Expired - Lifetime
Application number
EP90122275A
Other languages
German (de)
English (en)
Other versions
EP0432531A1 (fr
Inventor
Rolf Schöler
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 Siemag AG
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
Application filed by SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0432531A1 publication Critical patent/EP0432531A1/fr
Application granted granted Critical
Publication of EP0432531B1 publication Critical patent/EP0432531B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • C21D9/5732—Continuous furnaces for strip or wire with cooling of wires; of rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/26—Special arrangements with regard to simultaneous or subsequent treatment of the material
    • B21C47/262—Treatment of a wire, while in the form of overlapping non-concentric rings

Definitions

  • the invention relates to a cooling device for the controlled cooling of a finished rolled wire from the rolling heat, consisting of a cooling device arranged behind the finishing stand, for example water ramps, a winding layer for the wire and a cooling and transport device for the fanned out wire windings.
  • the wire is rolled in a rolling mill in which the starting material, for example a rod-shaped semi-finished product with a cross-sectional area of 100 mm to 150 mm, is fed from a holding furnace to the rolling stands of a roughing mill.
  • the rolling stock from the roughing mill is subsequently rolled into round material in an intermediate mill and a finishing train, which is then thermomechanically formed in a multi-stand rolling block onto an endless rolling stock with a diameter of approx. 5.5 mm.
  • the finished wire emerging from the finishing block is fed directly from the rolling heat to the predominantly used Stelmor cooling line.
  • the wire In the Stelmor cooling line, the wire is cooled in a controlled manner in order to achieve certain material properties, and the physical properties are uniform over the entire length of the wire rod and therefore a good pullability.
  • the wire first runs through a water cooling section behind the finished block and is then fanned out onto a conveyor belt by a winding device. During the transport to the winding collector, the wire is specifically cooled further by blown air.
  • the conveyor belt is either a chain conveyor or a roller conveyor, under which the cooling fans are arranged in spatially separated sections.
  • the cooling air is blown from below through slots in the conveyor belt.
  • the temperature of the incoming windings is 800 to 850 ° C for high-carbon steels and a maximum of 900 ° C for low-carbon steels. In the case of low-carbon steels, the windings are transported as slowly as possible and without cooling air, while in the case of high-carbon steels the material is conveyed at a high transport speed and with the highest cooling air supply.
  • a cooling and conveying device for a wire fanned out by a winding layer is known, the conveying device having individual transport sections with adjustable transport speeds.
  • the length of the successive transport sections of the conveying device is in each case dimensioned for the temperature drop within a section that is desired for the largest wire dimension that occurs.
  • the temperature of the wire loops is measured with a radiation pyrometer at the end of each conveyor section.
  • the cooling of the wire is regulated with relatively great effort in order to achieve - as said - certain material properties of the wire, in particular also with regard to the quality of the wire surface.
  • the winding layer with the finishing block of the rolling mill must run synchronously so that neither tension nor thrust occur and the wire can be fanned evenly in turns on the downstream conveyor belt by the laying head.
  • the downward inclined coil layer is therefore robustly constructed and has a particularly rigid housing to avoid natural vibrations.
  • the sturdy laying tube is shaped and mounted in such a way that it can be easily blown out and a smooth wire guide is ensured.
  • a cooling device with the features of the type mentioned is known.
  • Their cooling and transport device is designed between the wire winding layer and the coil forming station for the wire in such a way that sections of the cooling and transport device can be switched on or removed in order to influence the transport length and thus the cooling effect on the wire in order to wire different qualities. Measures for the controlled centering of the wire windings from the winding layer on the cooling and transport device are not found in this previously known document.
  • a cooling device of the same type which shows a winding feeder below the winding layer, which is adjustable in the vertical direction, which results in a variable inclination angle relative to the fixed winding layer in such a way that the windings hitting the conveyor belt are free overturn from a braking effect of the conveyor belt on the conveyor belt.
  • a variant of this cooling device is shown in DE-A-3 537 668, in which not only the winding feeder can be adjusted vertically by a variable angle of inclination, but also the winding feeder with its axis that determines the direction of entry of the wire and the direction of exit of the wire windings about a changeable axis Angle can be inclined to the horizontal. This measure also serves to fan out the wire turns on the conveyor belt evenly, ie to keep the distance between the wire turns laid uniform. The eccentric impact of wire turns on the conveyor belt cannot be influenced with these measures.
  • the object of the invention is to avoid the above-mentioned disadvantages in wire production and to take measures in a cooling device for wire rod according to the type mentioned at the outset, with which the off-center depositing of the wire windings on the cooling and transport belt is permanently prevented, so that the surface of the wire maintains the rolling quality previously achieved.
  • the solution is achieved with a cooling device of the type mentioned with the characterizing features of patent claim 1. Further developments of the invention can be found in patent claims 2-8.
  • the cooling device for the controlled cooling of the fanned wire turns is characterized in that a pivotable and / or displaceable winding feeder is arranged between the winding layer and the cooling and transport device, that the winding feeder has an articulation at the transition to the cooling and transport device, that a rolling or sliding support for the winding feeder is arranged at the transition to the winding feeder and that a displacement device acts on at least one side wall of the turn feeder closest to the turn feeder.
  • the displacement device is connected to a measuring device, preferably a photo-optical measuring device, which is arranged on the cooling and transport device and is directed towards the wire windings.
  • the previously observed center deviation of the turns which for various reasons is up to 150 mm, can be determined by pivoting of the trailer on both sides can be countered by appropriately adjusted amounts.
  • the fulcrum of the trailer is located at the transition area to the cooling and transport device, because there the first winding packages already lie firmly on the trailer and therefore a smooth transition of the winding packages from the trailer to the cooling and transport device is ensured.
  • the width of the winding feeder approximately corresponds to the width of the cooling and transport device and that the length of the winding feeder corresponds approximately to the throw-off length of the turns from the winding feeder to the first winding packets.
  • a measuring device preferably a photo-optical device, for example on the wire windings
  • a camera is arranged, which is connected to the displacement device in terms of control technology.
  • the winding feeder be designed as a roller conveyor.
  • This configuration of the winding trailer is particularly advantageous if the first section of the cooling and transport system is also designed as a roller conveyor.
  • the drive of the conveyor rollers of the winding trailer is a speed-controllable drive unit, for example a gear motor. This enables different transport speeds tailored to the respective wire quality.
  • the winding feeder be part of the cooling and transport device, as a result of which the winding feeder can be provided with its own controllable cooling device or can be incorporated into the cooling device of the first transport section in a constructive and procedural manner by means of suitable measures.
  • the cooling and transport system retains an approximately the same overall length in comparison to conventional systems, despite the swiveling turntable provided.
  • the winding feeder for better adaptation of the winding feeder to the cooling and transport system for the fanned-out wire windings, provision is also made for the winding feeder to be at least partially height-adjustable, preferably at the transition to the cooling and transport system.
  • the winding support Rollers are spherical, so that unhindered rolling of the support of the winding trailer on the foundation is guaranteed when the trailer is pivoted.
  • the cooling device for a rolled steel wire following a wire block is shown schematically, which consists of a water cooling 1, for example a water ramp, a winding device 2, a cooling and transport device 3 with fans 4, a winding collector 5 and a hook track 6 for finished wire bundles.
  • the wire 8 rolled out in the wire finishing block is quenched in the water ramp 1 from the rolling heat of 900 to 1050 ° C. to temperatures which, depending on the alloy components, are intended to cause or influence certain properties of the wire rod.
  • the rolling stock is gradually cooled in this area if no martensite or bainite is allowed to form on the surface.
  • a uniform structure from the core to the surface is not desirable; in this case, the wire rod is cooled so much in the water ramps that martensite is formed on the surface of the wire, which is caused by the core heat is left on.
  • the laying temperature for Tempcore wire is around 500 ° C, while the other qualities are cooled to a temperature between 900 ° C and 750 ° C.
  • the quenched but still glowing wire rod is deposited in turns and fanned out on the cooling and transport device with the help of the winding layer 2.
  • the cooling and transport device 3 provided with driven transport rollers 9 has three cooling sections 3 ′, 3 ′′, 3 ′′ ′′ to be regulated differently, each cooling section below the transport rollers 9 having a flow housing 10 and the blower 4.
  • the fanned out windings are conveyed further on the cooling conveyor belt, on which they can be cooled down very quickly with blown air at a cooling speed of 15 to 20 ° C per second by the cooling air conveyed by the blowers being fed from below through the roller table to the wire windings to be cooled is, the wire windings are flowed around on all sides by the cooling air.
  • the optimal cooling and transport device for the wire windings must therefore be designed flexibly for the most varied cooling variants.
  • the wire rod in modern rolling mills is rolled out at speeds of 100m / s in the finishing block. It is therefore absolutely essential that the winding rack is placed on the cooling transport system is carried out as precisely and centrally as possible so that the procedural objectives are achieved and surface damage to the wire due to the displacement of the winding pattern against the side walls of the transport system is avoided.
  • the pivotable winding support 11 is arranged between the winding layer 2 and the cooling and transport device 3.
  • the winding layer 11 is designed as a roller conveyor, the conveyor rollers 12 of which are driven by a speed-adjustable drive unit 13 are driven.
  • the individual conveyor rollers are driven in a manner known per se by a chain drive, which is not shown in detail, but runs in the chain case 14.
  • the winding feeder 11 has an articulation 15 at the transition to the cooling and transport system 3; furthermore, a rolling support 16 for the winding feeder is arranged at the transition to the winding feeder 2.
  • the rollers 17 supporting the winding feeder are spherical.
  • a displacement device 19 engages, which can consist, for example, of a piston-cylinder unit.
  • the direction of movement of the displacement device is indicated by arrow 20.
  • the pivoting of the winding support 11 caused by the displacement device 19 is indicated by the arrow 21.
  • a height-adjustable support buffer 22 is arranged below the winding feeder 11.
  • Camera 24 is arranged, with which the winding image of the wire windings deposited by the winding layer 2 is continuously recorded.
  • the camera 24 is connected to the displacement device 19 in terms of control technology with the aid of a transducer and measuring amplifier 25.
  • the operating personnel will actuate the shifting device 19 remotely, whereby the winding clamp 11 rotates in the joint formation 15 and is moved on the support rollers 17 in the desired direction of movement 21.
  • the winding pattern ie the wire windings lying one above the other to form a fanned-out package, is directed into the center of the transport device 3 and the wire can, without contacting the side walls 23 of the transport device 3, according to the movement arrow 26 to the winding collector 5 at the end of the cooling and transport device can be transported.
  • the correction of the winding pattern or the correction of the direction of movement of the wire windings on the cooling and transport device 3 can be automated in that the displacement device 19 is actuated by the optical measuring device 24 with the aid of the measuring amplifier and the transducer 25 as soon as a predetermined setpoint or a predetermined permissible center deviation is exceeded.
  • the width Bw of the winding feeder 11 almost corresponds to the width Bk of the cooling and transport system 3 and the length Lw of the winding feeder corresponds approximately to the length of the windings from the winding feeder to the first winding packets of the fanned wire 8.
  • the support buffer 22 is adjusted according to the movement arrow 27.
  • the winding feeder 11 is also intended to be a cooling device for the wire rod and thus be included as a cooling section in the cooling and transport device 3, the winding feeder 11 according to FIG. 1 can be equipped with a separate flow housing 10 and the corresponding blower 4.
  • the winding trailer can have a heat-insulating hood for other reasons.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Coating With Molten Metal (AREA)
  • Heat Treatment Of Articles (AREA)

Claims (8)

  1. Installation de refroidissement pour le refroidissement contrôlé d'un fil laminé à température de laminage, constitué par un dispositif de refroidissement, par exemple des rampes à eau (1), un dispositif de formation de spires (2), pour le fil, ainsi qu'un dispositif de refroidissement et de transport (3) pour les spires de fil empilées,agencés en aval de la cage de finition, un dispositif de superposition de spires pivotable et/ou déplaçable (11) étant agencé entre le dispositif de formation de spires (2) et le dispositif de refroidissement et transport (3) , le dispositif de superposition de spires (11) comportant une articulation (15) à l'endroit du passage vers le dispositif de refroidissement et de transport (3), un appui roulant ou coulissant (16) pour le dispositif de superposition de spires (11) étant prévu à l'endroit du passage vers le dispositif de formation de spires (2), et un dispositif de déplacement (19) agissant sur au moins une paroi latérale (18) du dispositif de superposition de spires,la plus proche du dispositif de formation de spires, et un dispositif de mesure (24), de préférence un appareil de mesure photooptique, orienté vers les spires de fil étant agencé au dispositif de refroidissement et de transport (3) et étant en liaison contrôlée avec le dispositif de déplacement (19) afin d'empêcher un dépôt décentré des spires de fil sur le dispositif de refroidissement et de transport (3).
  2. Installation de refroidissement selon la revendication 1 caractérisée en ce que le dispositif de superposition de spires (11) fait partie du dispositif de refroidissement et de transport (3).
  3. Installation de refroidissement selon la revendication 1 caractérisée en ce que le dispositif de superposition de spires (11) comporte un capot isolant thermique.
  4. Installation de refroidissement selon les revendications 1 à 3 caractérisée en ce que le dispositif de superposition de spires (11) consiste en un dispositif de transport à rouleaux (12).
  5. Installation de refroidissement selon les revendications 1à4 caractériséeen ce que le dispositif de superposition de spires (11) est réglable en hauteur ( vérins d'appui 22), de préférence à l'endroit du passage vers le dispositif de refroidissement et de transport (3).
  6. Installation de refroidissement selon la revendication 1 caractériséeen ce que les rouleaux (17) qui appuyent le dispositif de superposition de spires (11) sont bombés.
  7. Installation de rèfroidissement selon la revendication 4 caractériséeen ce que l'entraînement des rouleaux de transport (12) du dispositif de superposition de spires (11) consiste en un dispositif d'entraînement (13) réglable en vitesse de rotation.
  8. Installation de refroidissement selon les revendications 1 à 7 caractérisée en ce que la largeur (B w ) du dispositif de superposition des spires (11) correspond approximativement à la largeur (Bw) du dipositif de refroidissement et de transport (3), et en ce que la longueur (Lw) du dispositif de superposition des spires (11) correspond approximativement à la longueur de déversement des spires du dispositif de formation des spires (2) jusqu'aux premiers paquets de spires.
EP90122275A 1989-12-09 1990-11-22 Dispositif pour refroidir des fils laminés Expired - Lifetime EP0432531B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3940735A DE3940735A1 (de) 1989-12-09 1989-12-09 Kuehleinrichtung fuer walzdraht
DE3940735 1989-12-09

Publications (2)

Publication Number Publication Date
EP0432531A1 EP0432531A1 (fr) 1991-06-19
EP0432531B1 true EP0432531B1 (fr) 1994-08-17

Family

ID=6395136

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90122275A Expired - Lifetime EP0432531B1 (fr) 1989-12-09 1990-11-22 Dispositif pour refroidir des fils laminés

Country Status (5)

Country Link
US (1) US5079937A (fr)
EP (1) EP0432531B1 (fr)
JP (1) JPH03236423A (fr)
AT (1) ATE110117T1 (fr)
DE (2) DE3940735A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5423200A (en) * 1993-09-14 1995-06-13 Morgan Construction Company Rolling mill material handling system
DE19746495A1 (de) * 1997-10-22 1999-04-29 Schloemann Siemag Ag Ablegeverfahren für Drahtwindungen auf ein Transportband und hiermit korrespondierende Ablegevorrichtung
DE19801406A1 (de) * 1998-01-16 1999-07-22 Schloemann Siemag Ag Ablegevorrichtung zum Ablegen von Windungen aus Draht
US6010088A (en) * 1998-07-21 2000-01-04 Morgan Construction Company Apparatus for centralizing rings being deposited in an overlapping pattern on a cooling conveyor
IT1314806B1 (it) * 2000-03-07 2003-01-16 Danieli Off Mecc Apparecchiatura per il trasporto ed il raffreddamento di prodottilaminati quali vergelle, fili, tondini o simili.
US20080019805A1 (en) * 2006-07-19 2008-01-24 Bowler Martyn A Method of transporting and heat treating coils of hot rolled products in a rolling mill
FI20070622L (fi) * 2007-08-17 2009-04-15 Outokumpu Oy Menetelmä ja laitteisto tasaisuuden kontrolloimiseksi ruostumatonta terästä olevan nauhan jäähdytyksessä
CN102965489B (zh) * 2012-12-12 2015-03-25 天津市热处理研究所有限公司 细长杆类零件的热处理及在线校直装置及方法
KR101782757B1 (ko) * 2013-10-29 2017-09-27 신닛테츠스미킨 카부시키카이샤 선재 냉각 장치 및 선재 냉각 방법
US20220371077A1 (en) * 2021-05-21 2022-11-24 Primetals Technologies USA LLC Method of Automating Coil Height Control in a Wire Rod Plant

Family Cites Families (12)

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Publication number Priority date Publication date Assignee Title
DE1752025A1 (de) * 1968-01-30 1970-12-23 Schloemann Ag Vorrichtung zur Durchfuehrung des Verfahrens zum kontinuierlichen Ablegen eines Drahtwindungsstranges auf ein endloses Foerdermittel
GB1353252A (en) * 1971-12-28 1974-05-15 British Steel Corp Cropping metal sections to length
US3865153A (en) * 1973-12-03 1975-02-11 Morgan Construction Co Metal treatment apparatus for steel rod having an oscillating platform below the laying head
DE2536236C2 (de) * 1975-08-14 1985-01-03 Mannesmann AG, 4000 Düsseldorf Verfahren und Vorrichtung zum kontinuierlichen Patentieren von Walzdraht aus der Walzhitze
JPS5477260A (en) * 1977-12-01 1979-06-20 Toshiba Corp Laying head positioning control unit
DE2837912A1 (de) * 1978-08-31 1980-03-13 Moeller & Neumann Gmbh Vorrichtung zum ausfaechern und ablegen von nicht konzentrischen drahtwindungen auf ein als kuehlstrecke dienendes transportband
DE2932729C2 (de) * 1979-08-13 1987-08-20 Kocks Technik GmbH & Co, 4000 Düsseldorf Kühlstrecke zum Abkühlen von walzwarmem Draht
US4653630A (en) * 1981-11-16 1987-03-31 Anna Bravin Method of and device for controlling the transfer of articles from a first conveyor belt to predetermined locations on a second conveyor belt
IT8460459V0 (it) * 1984-09-19 1984-09-19 Danieli Off Mecc Testa forma spire convertibile.
DE3537668A1 (de) * 1985-10-23 1987-04-23 Krupp Gmbh Walzdrahtadjustage
US4651203A (en) * 1985-10-29 1987-03-17 At&T Technologies, Inc. Video controlled article positioning system
DD250069B1 (de) * 1986-06-19 1989-02-15 Thaelmann Schwermaschbau Veb Rollgang fuer einen windungsleger

Also Published As

Publication number Publication date
EP0432531A1 (fr) 1991-06-19
DE59006834D1 (de) 1994-09-22
DE3940735A1 (de) 1991-06-13
US5079937A (en) 1992-01-14
ATE110117T1 (de) 1994-09-15
JPH03236423A (ja) 1991-10-22

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