EP1206583A1 - Glühvorrichtung - Google Patents
GlühvorrichtungInfo
- Publication number
- EP1206583A1 EP1206583A1 EP00960479A EP00960479A EP1206583A1 EP 1206583 A1 EP1206583 A1 EP 1206583A1 EP 00960479 A EP00960479 A EP 00960479A EP 00960479 A EP00960479 A EP 00960479A EP 1206583 A1 EP1206583 A1 EP 1206583A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- extrudate
- annealing
- extruded material
- particular according
- contact elements
- 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
Links
- 238000000137 annealing Methods 0.000 title claims abstract description 72
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 76
- 229910052782 aluminium Inorganic materials 0.000 claims description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 34
- 238000001816 cooling Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 9
- 229910000838 Al alloy Inorganic materials 0.000 claims description 7
- 239000002826 coolant Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 2
- 101100400378 Mus musculus Marveld2 gene Proteins 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 claims 1
- 239000000109 continuous material Substances 0.000 description 12
- 239000007789 gas Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 235000012438 extruded product Nutrition 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
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 the annealing treatment of metallic extrudates and in particular for the annealing treatment of extrudates containing aluminum, and to a method for producing a metallic, low-tension extrusion, in particular a metallic, low-tension extrusion which has aluminum.
- Extruded material in the sense of the present invention is in particular a metallic wire which has a one-piece cross-sectional area perpendicular to its longitudinal axis or a bundle of such metallic wires.
- the continuous material is guided, for example continuously, over a plurality of contact disks.
- These contact disks are connected to a voltage source so that a current can flow through the metallic strand.
- extrudates made of aluminum or aluminum alloys are annealed in a batch treatment in the furnace (furnace or pot annealing).
- the extrudate taken up by metallic coils or other metallic carriers is subjected to a heat treatment for several hours in an annealing furnace in a protective gas atmosphere.
- the inventor is also aware that in the coarse wire area wires are annealed in a continuous annealing process according to a conductive principle, but here the quality of the product i. d. R. is insufficient.
- the invention is therefore based on the object of an annealing device for the treatment of metallic extrudates and in particular for the annealing treatment of extrudates which are aluminum contains, as well as to create a method for producing a metallic, low-tension extrusion, in particular a low-tension extrusion which has aluminum, in which current is transferred to the extrusion in a cost-effective and structurally simple manner with short throughput times, so that. this heats up at least in sections as a result of this current flow, the contact elements transmitting the current to the strand material having a long service life.
- the object of the invention is to create a device with which metallic extrudates, and in particular extrudates made of or with aluminum, can be simplified and improved in terms of production technology and then cold-treated and then annealed.
- the object is achieved by a glow device according to claim 1.
- a method according to the invention is the subject of claim 16 or claim 18.
- an annealing device for the annealing treatment of metallic extrudates which has at least two contact elements made of electrically conductive material, which are electrically connected to a voltage source and cause a current to flow in at least a respective part of the extrudates when the extrudates contact them
- Contact elements is passed.
- These contact elements consist of a metal or a metal alloy which is matched to the material of the extruded material in such a way that practically no material from the extruded material enters the contact element diffused into it.
- the contact elements are designed as contact disks.
- the extrudate is preferably made of a light metal or an alloy which has a light metal.
- the strand material particularly preferably has or. the extrudate is an aluminum alloy.
- the contact element material preferably has the light metal which is contained in the extruded material.
- the contact element material is particularly preferably an alloy of this light metal.
- a three-phase or a direct voltage source can serve as the voltage source.
- the annealing device enables annealed extruded material made of aluminum, an aluminum alloy or the like to be produced in a production-technically simple, energy-efficient and cost-effective manner, in particular with a high quality of the product and low rejects. Furthermore, according to the invention, the throughput times in the production of annealed extrudates from aluminum, aluminum alloys or the like can be reduced with low process costs.
- the number of process steps can be reduced according to the invention by dispensing with the annealing treatment in the furnace.
- the associated handling effort such as an additional spool transport or rewinding of wire spools used in the furnace on plastic spools used for transport, is eliminated. Since, according to the invention, the long warm-up and warm-up phases of the wire container in the furnace are eliminated, the invention enables an increase in productivity and a reduction in throughput times.
- an annealing device according to the invention can be used very flexibly, which has a positive and process-simplifying effect, for example, in the annealing treatment of different container sizes and different wire materials.
- the quality of the annealed extrudate produced with an annealing device according to the invention can be improved in particular compared to an extruded product annealed in the furnace.
- the committee can also be reduced. This is due, for example, to the fact that the wire material at or. after the annealing treatment in the oven glued to the coil or the wire container and / or often undesirably recrystallized further during the cooling phase, which is avoided according to the invention.
- the invention also has advantages in terms of energy, since, for example, an additional outlay of unused energy, such as is caused by the unnecessary heating of the coils or the wire carrier in the annealing treatment in the furnace, is avoided.
- the contact elements or the contact disks are particularly preferably detachably arranged on the annealing device, so that they can be exchanged if another extruded material is heated or heated in the annealing device. should be annealed.
- the current is preferably transmitted from the voltage source to the contact elements by means of brushes or the like.
- the extruded material is preferably moved within the annealing device on a predetermined transport path through this annealing device, in particular guide devices such as deflection rollers or comb rollers or the like being provided.
- guide devices are provided which, under predetermined conditions, do not act as contact elements, so that the extrudates are transported through the glow device on predetermined sections of the transport path without an electrical current flowing through these sections.
- a plurality of glow lines are preferably arranged along the transport path, a glow line being a region of the transport path in which a stream flows through the extrudate or part of the extrudate or the part of the extrudate located in this section, which is applied to the by means of contact elements String material is transferred.
- different glow lines are arranged within the transport path, which have a different length and / or in which a different energy caused by current flow is supplied to the strand material.
- the invention is advantageous in that it enables the service life of the contact disks or contact elements to be significantly increased.
- the invention enables an extruded aluminum product to be economically annealed by conductive heating or by direct resistance heating, and the contact elements are not destroyed after a short time, for example after 15 or 30 minutes.
- the invention can prevent aluminum from diffusing out of the extruded material into the contact elements, so that intermetallic phases form in the contact elements, which cause embrittlement of the material.
- embrittlement of material would cause the formation of grooves on the contact elements, which in turn can cause the extruded material to slide on the contact elements, so that frictional wear occurs, which leads to further destruction of the contact elements or damage to the extruded material.
- the contact elements assigned to the same annealing section are, in particular, a contact element and a positive pole a contact element associated therewith, representing a negative pole, made of the same material.
- the annealing device preferably has a cold-forming device in which the extrudate can be cold-formed.
- the extrudate can be drawn in this cold forming device.
- the cold forming device is particularly preferably arranged in the material flow direction in front of an annealing section.
- a plurality of cold forming devices are preferably provided, one or more annealing sections being arranged behind at least some of these cold forming devices in the material flow direction.
- a preferred glow device has a cooling section which is part of the transport path.
- the extrudates can be cooled in this section.
- a cooling device or a cooling medium is provided for cooling the continuous material.
- the extrudate can be cooled in the cooling section by means of an oil.
- a low-viscosity oil is particularly preferably provided for cooling the extrudate.
- This thin-bodied oil preferably moves the extrudate after the annealing process.
- oil as a coolant is advantageous insofar as oil prevents the formation of oxidation layers on the surface of the strand or. prevented on the surface of the aluminum-containing extrusion.
- an oil is preferably used as the coolant, which essentially cannot cause any damage to health.
- the annealing device preferably has a stripping device or the like which removes the cooling medium or other residues from the surface of the continuous material.
- the stripping device is preferably arranged in the material flow direction after the cooling section.
- the stripping device is preferably designed as a drawing die.
- the stripping device which is particularly preferably in the form of a drawing die, is preferably cooled and / or lubricated with the same cooling oil that is used in the cooling device.
- the strand material is moved through a protective gas atmosphere in predetermined sections of the transport path.
- a protective gas atmosphere in predetermined sections of the transport path.
- pure nitrogen is used as a protective gas.
- the extrudate is preferably moved in the transport direction after a cold-forming device over at least one annealing section and then through a cooling section, the cold-forming device having one or more drawing dies, of which one keystone is the last drawing die in the transport direction.
- a protective gas atmosphere is provided between this keystone and the cooling section, which has oil in particular.
- the protective gas atmosphere prevents the formation of oxide layers on the strand material, in particular on aluminum strand material.
- the annealing device preferably has a pulling device which is designed in particular as a drawing disk and which can load the extruded material with a force which causes the extruded material to be moved on the transport path with uniform tension.
- a pulling device or pulling disk preferably has a separate motor or only assigned to this pulling device, which drives this pulling device or pulling disk.
- the speeds of various contact disks are controlled by means of a control device in such a way that slippage of the extrudate is avoided, even if the extrudate expands on the annealing section due to the temperature.
- predetermined characteristic values such as the annealing temperature, a characteristic value representing the extruded material, the length of the annealing section, the extruded diameter or the like can be used for the control.
- the object is further achieved by a method according to claim 16 or according to claim 18.
- contact elements for an annealing device are preferably selected which have aluminum if an aluminum-containing strand material is to be annealed in the annealing device.
- These contact elements are connected to a voltage source, so that the aluminum-containing extrudate, which is moved past these contact elements with contact, is flowed through in the respective sections arranged between these contact elements by a current, which causes the extrudate to heat up, so that the latter is low in tension is annealed.
- the extrudate in particular the aluminum-containing extrudate, is preferably cooled by means of an oil, in particular by means of a low-viscosity oil.
- the oil fed to the extrudate during cooling is preferably stripped off after cooling, in particular by means of a drawing die.
- the invention has a large number of further exemplary embodiments, which description of individual embodiments should not be omitted.
- Fig. 1 shows an exemplary embodiment of the invention in a schematic, partially sectioned view.
- the annealing device 10 shown in FIG. 1 has a transport path 12 along which the extruded material 14 containing aluminum can be moved. At the end of the cold-forming device 16, the aluminum-containing extrudate 14 is drawn through a drawing die 18. The aluminum-containing extrudate 14 is then moved through an area in which a protective gas 20 is arranged. A part of this area in which the aluminum-containing extruded material 14 is moved by the protective gas 20 is an annealing section 22.
- This annealing section 22 is delimited by a first contact disk 24 and a second contact disk 26.
- the first contact disk 24, which is in particular a negative pole, is preferably a pull-off disk which can exert a force on the aluminum-containing extruded material 14 so that it is moved.
- the first contact disk 24 and the second contact disk 26 are each connected to a voltage source and have aluminum, so that the extrudate located on the annealing section 22 is heated.
- the continuous material is guided over various deflection rollers 28.
- the aluminum-containing extrudate 14 is moved along a second annealing section 30, which is delimited by the second contact disk 26 and the third contact disk 32.
- the contact disks 32, 24 have an identical potential, which differs from the potential of the contact disk 26.
- the aluminum-containing extrudate 14 is - here already partially on the annealing section 30 - cooled by a low-viscosity oil 34 before this oil is removed from the aluminum-containing extrudate 14 by a stripping device, which is designed here as a drawing die 36.
- the annealing device 10 also has a second pulling disc, which applies a force to the aluminum-containing extruded material 14, so that it is moved.
- Annealing device conveyor track aluminum-containing extrudates cold-forming device drawing die shielding gas first annealing section first contact disk second contact disk deflecting roller second annealing section third contact disk low-viscosity oil drawing die
Landscapes
- 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)
- Furnace Details (AREA)
- Continuous Casting (AREA)
- Tunnel Furnaces (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19939399 | 1999-08-19 | ||
DE19939399A DE19939399A1 (de) | 1999-08-19 | 1999-08-19 | Glühvorrichtung |
PCT/EP2000/008050 WO2001014603A1 (de) | 1999-08-19 | 2000-08-17 | Glühvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1206583A1 true EP1206583A1 (de) | 2002-05-22 |
EP1206583B1 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 (de) |
EP (1) | EP1206583B1 (de) |
JP (1) | JP2003507577A (de) |
DE (2) | DE19939399A1 (de) |
ES (1) | ES2242633T3 (de) |
PT (1) | PT1206583E (de) |
WO (1) | WO2001014603A1 (de) |
Families Citing this family (6)
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 |
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 |
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)
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 |
US4437904A (en) * | 1981-12-21 | 1984-03-20 | Southwire Company | Method for improved heat treatment of elongated aluminum alloy materials |
US4431168A (en) * | 1981-12-21 | 1984-02-14 | Southwire Company | Apparatus for improved heat treatment of elongated aluminum alloy materials |
EP0806263B1 (de) * | 1996-05-06 | 2001-07-18 | Ford Motor Company Limited | Verfahren zur Verwendung von Kupfer-Basis-Elektroden für das Punktschweissen von Aluminium |
-
1999
- 1999-08-19 DE DE19939399A patent/DE19939399A1/de not_active Withdrawn
-
2000
- 2000-08-17 DE DE50010299T patent/DE50010299D1/de not_active Expired - Lifetime
- 2000-08-17 EP EP00960479A patent/EP1206583B1/de not_active Expired - Lifetime
- 2000-08-17 US US10/069,302 patent/US7064291B1/en not_active Expired - Fee Related
- 2000-08-17 WO PCT/EP2000/008050 patent/WO2001014603A1/de active IP Right Grant
- 2000-08-17 JP JP2001518470A patent/JP2003507577A/ja not_active Withdrawn
- 2000-08-17 PT PT00960479T patent/PT1206583E/pt unknown
- 2000-08-17 ES ES00960479T patent/ES2242633T3/es not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0114603A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2242633T3 (es) | 2005-11-16 |
DE19939399A1 (de) | 2001-02-22 |
JP2003507577A (ja) | 2003-02-25 |
DE50010299D1 (de) | 2005-06-16 |
PT1206583E (pt) | 2005-09-30 |
WO2001014603A1 (de) | 2001-03-01 |
EP1206583B1 (de) | 2005-05-11 |
US7064291B1 (en) | 2006-06-20 |
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