EP0006841A2 - 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
EP0006841A2
EP0006841A2 EP79930011A EP79930011A EP0006841A2 EP 0006841 A2 EP0006841 A2 EP 0006841A2 EP 79930011 A EP79930011 A EP 79930011A EP 79930011 A EP79930011 A EP 79930011A EP 0006841 A2 EP0006841 A2 EP 0006841A2
Authority
EP
European Patent Office
Prior art keywords
pan
quenching
preheating
bath
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.)
Granted
Application number
EP79930011A
Other languages
German (de)
English (en)
Other versions
EP0006841B1 (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 customary for this purpose systems generally consist of a Vor michmaschinermbad, usually a lead bath, which heats the feed-through wire 450-550 0 C.
  • This preheating bath which is brought to the temperature required for this by any means, is followed by a similar bath as a quenching bath.
  • Both baths are connected to a transformer, so that the wire, which is guided through the liquid metal quantities, on the path that it runs freely between the two baths, below Utilizing its ohmic resistance is heated.
  • the so-called glow path the temperature of about 1000 ° C required for austenitization, which is well above Ac 3, is reached within a very short time.
  • the aim of the present invention was therefore to provide a device which, on the one hand, maintains the ohmic resistance heating of the wire to be patented, which heating can be carried out easily, and, on the other hand, the device itself known method occurring high energy expenditure significantly reduced.
  • 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 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 energy required for the annealing and austenitizing of the wire, which almost completely passes to the quenching bath in the course of the subsequent sorbitizing, is therefore used according to the invention for heating the preheating bath, since the preheating pan is almost completely washed by the liquid metal located in the quenching pan becomes.
  • the quenching pan is equipped with a combined heating and cooling unit.
  • the role of this aggregate consists in establishing the necessary temperature conditions when starting up the system or deriving any excess thermal energy at any time.
  • the device according to the invention makes it possible to keep the preheating bath always at a sufficiently high temperature without additional external energy supply.
  • the conditions required for the formation of the desired sorbitol structure namely a homogeneous temperature of 500-550 ° C., are achieved and the thermal energy given off by the glowing wire to the quenching bath is used sensibly. In this way, energy savings of up to 50% can be achieved compared to conventional resistance patent systems.
  • the quenching pan can be as elongated as possible. In a consistent continuation of this construction concept, one can also provide for the quenching pan to be divided into two compartments by a dam on the one hand, 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 executing 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 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 inner insulation (12), which electrically insulates the preheating bath (10) and the quenching bath (20) from one another 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 1000 ° C.
  • the combined heating and cooling unit (22) is located inside the quenching bath (20) and 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 cooling section (40).
  • Fiq. 2 shows the design of the device according to the invention with the quenching pan in an elongated form.
  • a pump unit (23) is also provided for transporting thermal energy into the immediate vicinity of the preheating pan.
  • 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)
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 true EP0006841A2 (fr) 1980-01-09
EP0006841A3 EP0006841A3 (en) 1980-01-23
EP0006841B1 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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607519A1 (fr) * 1986-11-27 1988-06-03 Michelin & Cie Procede et dispositif pour traiter thermiquement un fil d'acier
WO2007054063A2 (fr) * 2005-11-10 2007-05-18 C.D. Wälzholz Kg. Procede et dispositif pour former en continu une structure de bainite dans un acier au carbone, en particulier dans un acier feuillard

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS549643B2 (fr) * 1975-02-04 1979-04-26
BR9611827A (pt) * 1995-11-30 1999-09-28 Kimberly Clark Co trama não entrelaçada de microfibras superfinas.
US9004327B2 (en) * 2012-08-31 2015-04-14 Wfk & Associates, Llc Insertion guide for animal footwear

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB560599A (en) * 1942-05-01 1944-04-12 William Harry Wood Improved apparatus for the heat treatment of metal wire, strip and the like
LU40026A1 (fr) * 1960-04-28 1961-06-15
DE1167866B (de) * 1959-10-31 1964-04-16 Siemens Ag Vorrichtung zur Waermebehandlung von Draehten oder Baendern durch elektrische Widerstandserhitzung
DE1583406A1 (de) * 1967-11-15 1970-08-13 Siemens Ag Anordnung zum Waermebehandeln von Stranggut durch elektrische Widerstandserhitzung

Family Cites Families (9)

* 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
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
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
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
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB560599A (en) * 1942-05-01 1944-04-12 William Harry Wood Improved apparatus for the heat treatment of metal wire, strip and the like
DE1167866B (de) * 1959-10-31 1964-04-16 Siemens Ag Vorrichtung zur Waermebehandlung von Draehten oder Baendern durch elektrische Widerstandserhitzung
LU40026A1 (fr) * 1960-04-28 1961-06-15
DE1583406A1 (de) * 1967-11-15 1970-08-13 Siemens Ag Anordnung zum Waermebehandeln von Stranggut durch elektrische Widerstandserhitzung

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607519A1 (fr) * 1986-11-27 1988-06-03 Michelin & Cie Procede et dispositif pour traiter thermiquement un fil d'acier
EP0270860A1 (fr) * 1986-11-27 1988-06-15 MICHELIN & CIE (Compagnie Générale des Etablissements Michelin) Société dite: Procédé et dispositif pour traiter thermiquement un fil d'acier
WO2007054063A2 (fr) * 2005-11-10 2007-05-18 C.D. Wälzholz Kg. Procede et dispositif pour former en continu une structure de bainite dans un acier au carbone, en particulier dans un acier feuillard
WO2007054063A3 (fr) * 2005-11-10 2007-07-19 C D Waelzholz Brockhaus Gmbh Procede et dispositif pour former en continu une structure de bainite dans un acier au carbone, en particulier dans un acier feuillard
US7972452B2 (en) 2005-11-10 2011-07-05 C.D. Wälzholz GmbH Method and device for the continuous creation of a bainite structure in a carbon steel, particularly in a strip steel
US8652396B2 (en) 2005-11-10 2014-02-18 C.D. Wälzholz GmbH Method and device for the continuous creation of a bainite structure in a carbon steel, particularly in a strip steel

Also Published As

Publication number Publication date
CS209814B2 (en) 1981-12-31
ATE102T1 (de) 1981-07-15
AU4860279A (en) 1980-02-07
EP0006841B1 (fr) 1981-07-08
JPS5822526B2 (ja) 1983-05-10
LU79911A1 (de) 1980-02-14
PL216796A1 (fr) 1980-03-24
EP0006841A3 (en) 1980-01-23
US4249720A (en) 1981-02-10
AU521204B2 (en) 1982-03-18
JPS5514891A (en) 1980-02-01
PL116624B1 (en) 1981-06-30
SU993826A3 (ru) 1983-01-30
DE2960456D1 (en) 1981-10-15

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