EP1206583B1 - Glühvorrichtung - Google Patents

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Publication number
EP1206583B1
EP1206583B1 EP00960479A EP00960479A EP1206583B1 EP 1206583 B1 EP1206583 B1 EP 1206583B1 EP 00960479 A EP00960479 A EP 00960479A EP 00960479 A EP00960479 A EP 00960479A EP 1206583 B1 EP1206583 B1 EP 1206583B1
Authority
EP
European Patent Office
Prior art keywords
strands
strand
contact elements
glowing
contact
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
EP00960479A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1206583A1 (de
Inventor
Bernd LOHMÜLLER
Rainer Vockentanz
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.)
Maschinenfabrik Niehoff GmbH and Co KG
Original Assignee
Maschinenfabrik Niehoff GmbH and Co KG
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 Maschinenfabrik Niehoff GmbH and Co KG filed Critical Maschinenfabrik Niehoff GmbH and Co KG
Publication of EP1206583A1 publication Critical patent/EP1206583A1/de
Application granted granted Critical
Publication of EP1206583B1 publication Critical patent/EP1206583B1/de
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
    • C21D9/62—Continuous furnaces for strip or wire with direct resistance heating
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C21D1/30—Stress-relieving

Definitions

  • the invention relates to an annealing device for annealing of metallic extrudates and in particular for the annealing treatment of extrudates containing aluminum and a process for producing a metallic, low-tension strand, namely a metallic, low-voltage Continuous material, which has aluminum.
  • Stranggut in the context of the present invention is a metallic Wire, which perpendicular to its longitudinal axis a having a one-piece cross-sectional area or a bundle of such metallic wires.
  • the extruded material for example, continuously, over a plurality of contact discs guided.
  • These contact discs are with a Voltage source connected, so that through the metallic strand a current can flow.
  • the inventor is also known that extruded aluminum or aluminum alloys in a batch oven is annealed (furnace or Topfglühung). This is the from metallic coils or other metallic carriers recorded Continuous material in an annealing furnace in a protective gas atmosphere subjected to several hours of heat treatment.
  • the inventor is also known that in the coarse wire area wires in a continuous annealing process according to a conductive principle be annealed, but the quality of the product i.d.R. is insufficient.
  • GB-A-1211849 there is an apparatus and a method known for the heat treatment of aluminum foils, which thereby be guided over electrically conductive rollers. For the purpose of With ease these rollers have hollow aluminum shells.
  • the GB-A-1211849 reports that the local method for drying of coatings, inks or adhesives can.
  • an annealing device in which A single wire is annealed by an electric current flows through a predetermined length of the single wire.
  • the single wire is passed over a roller, as well as over multiple electrodes using energy from a voltage source be supplied. Between these electrodes is the single wire annealed.
  • One of these electrodes has a solid copper block bolted to a block of insulating material is. In a surface of the copper block is a Groove provided corresponding to the path of the single wire is curved. Other electrodes are designed similarly.
  • the invention is therefore based on the object, an annealing device for the treatment of metallic extrudates and in particular for the annealing of extruded material, which is aluminum contains, as well as a method for producing a metallic, low-tension continuous material, one of them low stress strand material, which has aluminum, too create, in which at short lead times on cost and structurally simple way to transfer electricity to the stranded material so that this is due to this current flow heated at least in sections, with the current on the Strangassitragenden contact elements have a long life exhibit.
  • the task to provide a device with which metallic Extruded material, and in particular extruded or extruded aluminum, simplified in terms of production technology and improved cold forming and then allowed to anneal.
  • the object is achieved by an annealing device according to claim 1.
  • a method according to the invention is the subject of the claim 15th
  • an annealing device for annealing treatment proposed by metallic rod, the at least two Having contact elements of electrically conductive material, which are electrically connected to a voltage source and cause at least in a respective part of the strand a current flows when contacting the strand material to this Contact elements is passed.
  • These contact elements consist of a metal or a metal alloy, which is tuned to the material of the strand, that practically no material from the extruded material into the contact elements diffuses.
  • the contact elements are as contact discs educated.
  • the strand is made of a light metal or an alloy, which has a light metal.
  • this indicates Extruded aluminum or the extruded aluminum alloy.
  • the contact element material comprises the light metal, namely aluminum on which is contained in the strand material.
  • the contact element material is an alloy of this Light metal namely an aluminum alloy.
  • the annealing device has a cold forming device, in which the extruded material can be cold-worked.
  • the cold deformation device is in the material flow direction arranged in front of an annealing section and has at least one die.
  • a three-phase or a DC voltage source serve as a voltage source.
  • the annealing device allows, annealed Extruded material of aluminum, an aluminum alloy or the same production technology simple as well as energy and cost-effective to manufacture, especially at high quality of the product and low scrap. Furthermore, can be According to the invention at low process costs, the throughput times in the production of annealed extrudates of aluminum, aluminum alloys or the like.
  • the number of process steps Decrease by adding to the annealing treatment in the oven is waived.
  • the associated effort like an extra bobbin transport or a rewinding in the Furnace used wire coils on used for transportation Plastic coils, not applicable.
  • the long and füricarmphasen the Drahtgebindes omitted in the oven allows the invention an increase in productivity and a Shortening of throughput times.
  • an inventive Annealing device very flexible used, which, for example in the annealing treatment of different container sizes and different wire materials positive and process simplifying effect.
  • the quality of the invention with an annealing device produced annealed continuous material can be compared especially improve a kiln annealed in the furnace. Also the Committee can be reduced. This is for example on it attributed to the wire material during or after the annealing treatment glued in the oven on the coil or the wire container and / or often undesirable during the cooling phase recrystallized, which is avoided according to the invention.
  • the invention causes advantages since for example, an additional outlay on unused energy, as he does during the annealing in the oven due to the unnecessary heating the coils or the wire carrier is effected, is avoided.
  • the contact elements or the contact discs releasably attached to the annealing device so that they can be replaced if another strand material is to be heated or annealed in the annealing device.
  • the current from the voltage source by means of brushes or the like transferred to the contact elements.
  • the Stirred material is preferably inside the annealing device on a predetermined transport path through this annealing device moved, in particular, management facilities such as Deflection rollers or comb rolls or the like are provided.
  • Particularly preferred guide means are provided, which not under predetermined conditions as contact elements act, so that the strand on predetermined sections of the Transport path is transported through the annealing device, without An electric current flows through these sections to become.
  • an annealing section is an area of the transport path is, in which the Stranggut or a part of the stranded material or the part of the strand in this section is traversed by a current which by means of contact elements is transferred to the continuous material.
  • Annealing lines arranged within the transport path, which have a different length and / or in which a different caused by current flow Energy is supplied to the stranded material.
  • the invention is advantageous in that it enables the life of the contact discs or contact elements clearly is increased.
  • the invention allows in particular that a strand of aluminum by conductive heating or by direct resistance heating on economic Way can be annealed and the contact elements are not already after a short while, such as after 15 or 30 minutes, be destroyed.
  • the invention can in particular avoid that aluminum the extrudate diffused into the contact elements, so that form intermetallic phases in the contact elements, which cause a material embrittlement.
  • material embrittlement would the formation of grooves on the contact elements effect, which in turn leads to a sliding of the strand material can lead to the contact elements, so that fretting occurs, resulting in further destruction of the contact elements or damage the strand.
  • the same glow path associated contact elements ie in particular a positive pole performing contact element and an associated with this, a negative terminal performing contact element, made of the same material.
  • a preferred glow device has a Cooling section, which is part of the transport path.
  • the extruded material can be cooled.
  • the strand can in the cooling section by means of a Oil to be cooled. Particularly preferred is a thin liquid Oil provided for cooling the strand.
  • the extruded material is preferably moved after the annealing process.
  • oil as a coolant is advantageous in that as oil, the formation of oxidation layers on the strand surface or on the surface of the aluminum-containing Prevents stranded material.
  • the annealing device has a stripping device or the like on which the cooling medium or other residues removed from the surface of the strand.
  • Prefers is the stripping device in Materialflußcardi after the Cooling section arranged.
  • the stripping device is preferably designed as a die.
  • the stripping device which is particularly preferred is designed as a die, with the same cooling oil cooled and / or lubricated, which in the cooling device is used.
  • the strand is in predetermined sections of the transport path moved by a protective gas atmosphere.
  • a protective gas atmosphere In particular, will pure nitrogen used as inert gas.
  • the strand is in the transport direction after a Cold deformation device via at least one annealing section and then moved through a cooling section, wherein the cold-forming device has one or more dies, of which a keystone the last die in the transport direction is. It is between this keystone and the Cooling section, which in particular has oil, a protective gas atmosphere intended.
  • the protective gas atmosphere prevents the formation of oxide layers on the strand, in particular on aluminum-containing Continuous material.
  • the annealing device has a peeling device, which is designed in particular as a drawing disc, and which the strand can be loaded with a force which causes that the strand with uniform tension on the transport path is moved.
  • a peeling device or Abziehscale a separate or only this peeling device associated motor, which this puller or Abziehin drives.
  • the speeds of different contact discs controlled by a control device such that slippage of the strand is avoided, namely even if the strand material due to temperature on the Annealing range expands.
  • a control device such that slippage of the strand is avoided, namely even if the strand material due to temperature on the Annealing range expands.
  • predetermined Characteristics such as the annealing tempering, a the strand material representing characteristic value, the length of the annealing line, the strand diameter or the like can be used.
  • contact elements selected for an annealing device which is aluminum when an aluminum-containing strand in the Annealing device should be annealed.
  • These contact elements are connected to a voltage source, so that the aluminum-containing Stranggut, which at these contact elements under contact is moved past, in the respective between these contact elements arranged portions flowed through by a stream is, which causes heating of the strand, so that this stress-relieved is annealed.
  • the strand material namely the aluminum-containing Stranggut, after annealing by means of an oil, and Although in particular by means of a low viscosity oil, cooled.
  • the supplied to the strand material during cooling after stripped off the cooling, in particular by means of a Drawing die.
  • the invention has a variety of other exemplary embodiments on, on which description of individual embodiments should not be waived.
  • the glow device 10 shown in Fig. 1 has a transport path 12, along which the aluminum-containing extrudate 14 can be moved. At the end of the cold forming device 16, the aluminum-containing stock 14 by a die 18 pulled. Subsequently, the aluminum-containing strand 14 moved through a region in which a protective gas 20 is arranged is. Part of this area, in which the aluminum-containing Stranggut 14 is moved by the protective gas 20 is an annealing line 22.
  • This Glühpiece 22 is through a first contact disc 24th and a second contact disc 26 limited.
  • the first contact disc 24 and the second contact disc 26th are each connected to a voltage source and point Aluminum on, so that each on the glow gap 22nd heated strand material is heated.
  • the extruded material is guided over different deflection rollers 28.
  • the aluminum-containing extruded 14 along a second annealing path 30 moves, which through the second contact disc 26 and the third contact disc 32 limited becomes.
  • the contact discs 32, 24 have an identical potential which differs from the potential of the contact disc 26.
  • the aluminum-containing continuous material 14 is - here already partially on the annealing section 30 - cooled by a low-viscosity oil 34, Before this oil from a scraper, which here as Die 36 is formed from the aluminum-containing extrudate 14 is removed.
  • the glow device 10 further includes a second peel-off wheel on which the aluminum-containing strand 14 with a force acted upon, so that this is moved.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Extrusion Of Metal (AREA)
  • Conductive Materials (AREA)
  • Continuous Casting (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Details (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
EP00960479A 1999-08-19 2000-08-17 Glühvorrichtung Expired - Lifetime EP1206583B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19939399A DE19939399A1 (de) 1999-08-19 1999-08-19 Glühvorrichtung
DE19939399 1999-08-19
PCT/EP2000/008050 WO2001014603A1 (de) 1999-08-19 2000-08-17 Glühvorrichtung

Publications (2)

Publication Number Publication Date
EP1206583A1 EP1206583A1 (de) 2002-05-22
EP1206583B1 true EP1206583B1 (de) 2005-05-11

Family

ID=7918938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00960479A Expired - Lifetime EP1206583B1 (de) 1999-08-19 2000-08-17 Glühvorrichtung

Country Status (7)

Country Link
US (1) US7064291B1 (ja)
EP (1) EP1206583B1 (ja)
JP (1) JP2003507577A (ja)
DE (2) DE19939399A1 (ja)
ES (1) ES2242633T3 (ja)
PT (1) PT1206583E (ja)
WO (1) WO2001014603A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101709358B (zh) * 2009-12-22 2011-05-11 苏州新长光热能科技有限公司 铝卷材冷却室

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6619121B1 (en) 2001-07-25 2003-09-16 Northrop Grumman Corporation Phase insensitive quadrature nulling method and apparatus for coriolis angular rate sensors
DE102011013827A1 (de) 2011-03-14 2012-09-20 Maschinenfabrik Niehoff Gmbh & Co. Kg Vorrichtung zur kontinuierlichen Wärmebehandlung von elektrisch leitfähigem Stranggut und Anordnung eines Schleifkontaktelements
CN104613777B (zh) * 2015-01-12 2016-06-22 本钢板材股份有限公司 固定退火炉内电阻带的装置
ITUA20162154A1 (it) * 2016-03-31 2017-10-01 Sampsistemi S R L Forno di ricottura a resistenza per la ricottura di almeno un filo, trefolo, corda, vergella o piattina di metallo o lega metallica
CN107974651B (zh) * 2017-12-22 2022-09-06 烟台孚信达双金属股份有限公司 一种铜铝复合圆棒在线旋转感应退火方法及设备

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2806130A (en) 1955-11-03 1957-09-10 Western Electric Co Strand annealing apparatus
GB1211849A (en) 1967-03-10 1970-11-11 Aluminium Foils Ltd Improvements in and relating to heat treatment of aluminium foil
DE1615420A1 (de) 1967-11-18 1970-08-13 Siemens Ag Elektrode zum Widerstandsschweissen
US3825873A (en) * 1970-03-12 1974-07-23 Universal Oil Prod Co Contact wheel assembly for strand annealing tubing
US3989923A (en) * 1972-10-11 1976-11-02 International Standard Electric Corporation Wire heat treating apparatus
FR2288152A1 (fr) * 1974-10-18 1976-05-14 Trefimetaux Procede et appareillage pour le traitement thermique en continu des fils et bandes metalliques
GB1552894A (en) * 1977-03-14 1979-09-19 Bicc Ltd Annealing of wire
US4196677A (en) 1977-04-15 1980-04-08 Siebert Louie P Anhydrous converter and implement for applying ammonia to the ground
US4431168A (en) * 1981-12-21 1984-02-14 Southwire Company Apparatus for improved heat treatment of elongated aluminum alloy materials
US4437904A (en) * 1981-12-21 1984-03-20 Southwire Company Method for improved heat treatment of elongated aluminum alloy materials
EP0806263B1 (en) 1996-05-06 2001-07-18 Ford Motor Company Limited Method of using copper based electrodes to spot-weld aluminium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101709358B (zh) * 2009-12-22 2011-05-11 苏州新长光热能科技有限公司 铝卷材冷却室

Also Published As

Publication number Publication date
DE19939399A1 (de) 2001-02-22
DE50010299D1 (de) 2005-06-16
ES2242633T3 (es) 2005-11-16
US7064291B1 (en) 2006-06-20
JP2003507577A (ja) 2003-02-25
WO2001014603A1 (de) 2001-03-01
PT1206583E (pt) 2005-09-30
EP1206583A1 (de) 2002-05-22

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