EP0006841B1 - Dispositif pour le traitement thermique en continu de produits métalliques - Google Patents

Dispositif pour le traitement thermique en continu de produits métalliques Download PDF

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Publication number
EP0006841B1
EP0006841B1 EP79930011A EP79930011A EP0006841B1 EP 0006841 B1 EP0006841 B1 EP 0006841B1 EP 79930011 A EP79930011 A EP 79930011A EP 79930011 A EP79930011 A EP 79930011A EP 0006841 B1 EP0006841 B1 EP 0006841B1
Authority
EP
European Patent Office
Prior art keywords
quenching
bath
preheating
ladle
wire
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
Application number
EP79930011A
Other languages
German (de)
English (en)
Other versions
EP0006841A2 (fr
EP0006841A3 (en
Inventor
Günter Stock
Karl Weyand
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.)
Trefilarbed SA
Original Assignee
Trefilarbed SA
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 Trefilarbed SA filed Critical Trefilarbed SA
Priority to AT79930011T priority Critical patent/ATE102T1/de
Publication of EP0006841A2 publication Critical patent/EP0006841A2/fr
Publication of EP0006841A3 publication Critical patent/EP0006841A3/xx
Application granted granted Critical
Publication of EP0006841B1 publication Critical patent/EP0006841B1/fr
Expired 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
    • C21D9/64—Patenting furnaces
    • 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

Definitions

  • the present invention relates to a device for the continuous heat treatment of elongated metal material, in particular wire.
  • the systems used for this generally consist of a preheating bath, usually a lead bath, which heats the wire passed through to 450-550 ° C.
  • This preheating bath which is brought to the temperature required for this by any means, is followed by a similar bath as a quench bath.
  • Both baths are connected to a transformer, so that the wire, which is guided through the liquid metal quantities, is heated on the path that it runs freely between the two baths, using its ohmic resistance.
  • glow path the temperature of about 1,000 ° C required for austenitization, which is well above Ac 3, is reached within a very short time.
  • DE-V-1.167.866 describes a device for the heat treatment of wires or strips by electrical resistance heating by means of heatable contact baths, in particular lead baths, one serving as a quench bath.
  • heatable contact baths in particular lead baths, one serving as a quench bath.
  • On the wall side of the quench bath facing the upstream contact bath are well heat-conducting and electrically insulated hollow ribs or tubes projecting into the contact bath, which enable heat transfer from the quench bath to the contact bath.
  • the aim of the present invention was therefore to provide a device which, on the one hand, maintains ohmic resistance heating of the wire to be patented which can be carried out easily and, on the other hand, significantly reduces the high energy expenditure which occurs in this known process.
  • this aim is achieved by a device which generally understands two pans filled with liquid metal, preferably lead, one of which is designed as a preheating pan and the other as a quenching pan and which are both connected to the secondary winding of a transformer and which are characterized by this that the preheating pan is arranged to be partially immersed in the quenching pan, the jacket of the preheating pan being completely electrically insulated from the liquid metal of the quenching pan with the highest possible heat permeability.
  • the quenching pan is equipped with a pump unit. If the capacity of the quenching pan exceeds that of the preheating pan by more than twice, the installation of a pump unit is recommended.
  • a conventional device that is suitable for circulating metal baths can serve as the pump unit.
  • the continuous circulation of the liquid metal in the quenching pan serves on the one hand to transport thermal energy into the immediate vicinity of the jacket of the preheating pan and on the other hand to avoid overheating in the wire entry zone.
  • the for glowing and austenitizing the The wire required energy, which almost completely passes to the quenching bath in the course of the subsequent sorbitization, is therefore used according to the invention for heating the preheating bath, since the preheating pan is almost completely washed around by the liquid metal which is located in the quenching pan, as a result of which one the shown prior art enlargement of the contact area and thus an improvement in the possibility of smooth heat transfer are given.
  • the quenching pan is equipped with a combined heating and cooling unit.
  • the role of this unit is to establish the necessary temperature conditions when starting up the system or to derive any excess thermal energy at any time.
  • the device according to the invention makes it possible to always keep the preheating bath at a sufficiently high temperature without additional external energy supply.
  • the conditions necessary for the formation of the desired sorbitol structure namely a homogeneous temperature of 500-550 ° C., prevail and that the thermal energy given off by the glowing wire to the quenching bath is used sensibly.
  • energy savings of up to 50% can be achieved in this way.
  • the quenching pan is made as elongated as possible.
  • the quenching pan can also provide for the quenching pan to be divided into two compartments on the one hand by a dam, or to use two separate quenching pans, one of which contains the preheating pan and is connected to the other via flow channels.
  • the shells of the pans are expediently made of steel. It is possible to use an insulation layer in the form of a composite material when designing the jacket of the preheating pan. However, it is also possible to provide a sandwich construction in which an insulating layer, preferably made of ceramic material, is embedded between two steel jackets.
  • Fig. 1 shows an embodiment with a schematic arrangement of preheating and quenching pan to each other
  • Fig. 2 shows an embodiment with the quenching pan in an elongated form.
  • Fig. 1 a distinction is made between the pans with the preheating bath (10) and the quenching bath (20).
  • the jacket of the preheating pan (11) rests on the supports (13). It is equipped with an internal insulation (12), which electrically insulates the preheating bath (10) and the quenching bath (20) and only allows a transfer of thermal energy.
  • the jacket of the preheating pan (11) and the jacket of the quenching pan (21) are connected to the secondary winding (31) of the transformer (30).
  • the metal baths (10) and (20) thus act as electrical contact baths for the wire (1) passed in the direction of the arrow.
  • the wire path (G) provided with dots corresponds to the glow path within which the wire is rapidly heated to approximately 1,000 ° C.
  • the combined heating and cooling unit (22) Inside the quenching bath (20) is the combined heating and cooling unit (22), which is actuated when the device is started up and when excess energy is removed.
  • the wire (1) After passing through the preheating bath (10) and the annealing section (G), the wire (1) passes through the quenching bath (20) in the opposite direction and then passes through the circulating air-cooled section (40).
  • FIG. 2 shows the design of the device according to the invention with the quenching pan in a stretched form.
  • a pump unit (23) for transporting thermal energy into the immediate vicinity of the preheating pan is additionally provided.
  • the wire is always routed in the same direction.
  • the pump unit (23) acts in the opposite direction to the wire feed.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Claims (2)

1. Installation pour le traitement thermique en continu de produits métalliques longs, en particulier de fils en acier, laquelle installation comprend notamment deux cuves contenant du métal fondu, de préférence du plomb, l'une des cuves étant prévue pour faire fonction de bain de préchauffage et l'autre de bain de trempe et les deux cuves étant reliées à l'enroulement secondaire d'un transformateur, caractérisée en ce que la cuve de préchauffage baigne en partie dans la cuve de trempe et que la paroi de la cuve de préchauffage présente vis-à-vis de la cuve de trempe une isolation totale au point de vue électrique et dont la perméabilité thermique est aussi élevée que possible.
2. Installation selon la revendication 1, caractérisée en ce qu'en vue de provoquer une circulation et une homogénisation thermique du bain de trempe il est installé dans ce dernier un agrégat de pompage.
EP79930011A 1978-07-03 1979-06-26 Dispositif pour le traitement thermique en continu de produits métalliques Expired EP0006841B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79930011T ATE102T1 (de) 1978-07-03 1979-06-26 Vorrichtung zum kontinuierlichen waermebehandeln von metallgut.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU79911 1978-07-03
LU79911A LU79911A1 (de) 1978-07-03 1978-07-03 Vorrichtung zum kontinuierlichen waermebehandeln von metallgut

Publications (3)

Publication Number Publication Date
EP0006841A2 EP0006841A2 (fr) 1980-01-09
EP0006841A3 EP0006841A3 (en) 1980-01-23
EP0006841B1 true EP0006841B1 (fr) 1981-07-08

Family

ID=19728949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79930011A Expired EP0006841B1 (fr) 1978-07-03 1979-06-26 Dispositif pour le traitement thermique en continu de produits métalliques

Country Status (10)

Country Link
US (1) US4249720A (fr)
EP (1) EP0006841B1 (fr)
JP (1) JPS5822526B2 (fr)
AT (1) ATE102T1 (fr)
AU (1) AU521204B2 (fr)
CS (1) CS209814B2 (fr)
DE (1) DE2960456D1 (fr)
LU (1) LU79911A1 (fr)
PL (1) PL116624B1 (fr)
SU (1) SU993826A3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS549643B2 (fr) * 1975-02-04 1979-04-26
FR2607519B1 (fr) * 1986-11-27 1989-02-17 Michelin & Cie Procede et dispositif pour traiter thermiquement un fil d'acier
KR100445769B1 (ko) * 1995-11-30 2004-10-15 킴벌리-클라크 월드와이드, 인크. 극세섬유 부직웹
DE102005054014B3 (de) 2005-11-10 2007-04-05 C.D. Wälzholz-Brockhaus GmbH Verfahren und Vorrichtung zur kontinuierlichen Ausbildung eines Bainitgefüges in einem Kohlenstoffstahl, insbesondere in einem Bandstahl
US9004327B2 (en) * 2012-08-31 2015-04-14 Wfk & Associates, Llc Insertion guide for animal footwear

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2300329A (en) * 1938-02-18 1942-10-27 William H Wood Method of heat treating steel wire and apparatus therefor
GB560599A (en) * 1942-05-01 1944-04-12 William Harry Wood Improved apparatus for the heat treatment of metal wire, strip and the like
US2463412A (en) * 1942-07-25 1949-03-01 John S Nachtman Electric resistance heat-treating of electroplated coatings
FR948545A (fr) * 1946-07-09 1949-08-03 Perfectionnements apportés au traitement thermique des fils métalliques
DE1167866B (de) * 1959-10-31 1964-04-16 Siemens Ag Vorrichtung zur Waermebehandlung von Draehten oder Baendern durch elektrische Widerstandserhitzung
GB985022A (en) * 1960-04-28 1965-03-03 British Iron Steel Research Improvements in or relating to the continuous heat treatment of elongate metal material
LU40026A1 (fr) * 1960-04-28 1961-06-15
DE1205572B (de) * 1962-03-30 1965-11-25 Schloemann Ag Vakuumgluehturm mit einer Glueh- und einer Kuehlstrecke zur kontinuierlichen Waerme-behandlung endloser Metallbaender
NL6513832A (fr) * 1964-10-28 1966-04-29
US3277270A (en) * 1965-04-09 1966-10-04 Oscar C Trautman Continuous heat treating of strapping and the like
DE1583406C3 (de) * 1967-11-15 1974-07-25 Siemens Ag, 1000 Berlin Und 8000 Muenchen Anordnung zum Wärmebehandeln von Stranggut durch elektrische Widerstandserhitzung
BE793716A (fr) * 1972-01-06 1973-07-05 Procedes Ind S E P R I S A Soc Procede et cuve de patentage de fils metalliques
US4168995A (en) * 1973-04-20 1979-09-25 December 4 Drotmuvek Steel wire patenting process

Also Published As

Publication number Publication date
EP0006841A2 (fr) 1980-01-09
US4249720A (en) 1981-02-10
AU521204B2 (en) 1982-03-18
EP0006841A3 (en) 1980-01-23
CS209814B2 (en) 1981-12-31
SU993826A3 (ru) 1983-01-30
ATE102T1 (de) 1981-07-15
AU4860279A (en) 1980-02-07
PL216796A1 (fr) 1980-03-24
LU79911A1 (de) 1980-02-14
JPS5514891A (en) 1980-02-01
DE2960456D1 (en) 1981-10-15
JPS5822526B2 (ja) 1983-05-10
PL116624B1 (en) 1981-06-30

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