EP1390551B1 - Procede et dispositif con us pour le traitement thermique de barres metalliques, en particulier de rubans d'acier - Google Patents

Procede et dispositif con us pour le traitement thermique de barres metalliques, en particulier de rubans d'acier Download PDF

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Publication number
EP1390551B1
EP1390551B1 EP02769462A EP02769462A EP1390551B1 EP 1390551 B1 EP1390551 B1 EP 1390551B1 EP 02769462 A EP02769462 A EP 02769462A EP 02769462 A EP02769462 A EP 02769462A EP 1390551 B1 EP1390551 B1 EP 1390551B1
Authority
EP
European Patent Office
Prior art keywords
metal
flux concentrator
metal strand
strand
recited
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
EP02769462A
Other languages
German (de)
English (en)
Other versions
EP1390551A1 (fr
Inventor
Werner Bechem
Rolf Brisberger
Walter Trakowski
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 Demag 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 Demag AG filed Critical SMS Demag AG
Publication of EP1390551A1 publication Critical patent/EP1390551A1/fr
Application granted granted Critical
Publication of EP1390551B1 publication Critical patent/EP1390551B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/101—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces
    • H05B6/103—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces multiple metal pieces successively being moved close to the inductor
    • H05B6/104—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces multiple metal pieces successively being moved close to the inductor metal pieces being elongated like wires or bands
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
    • C23C2/24—Removing excess of molten coatings; Controlling or regulating the coating thickness using magnetic or electric fields
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00

Definitions

  • the invention relates to a method and a device for thermal treatment in the coating of metal strands, in particular of steel strip, in which the metal strand moving in motion at the speed corresponding to the predetermined production quantity is heated while aiming at high temperature gradients.
  • the inductive band heats used are based on longitudinal or transverse field heating, the dimensions of the solenoids being a function of the band dimensions, the frequencies of the alternating fields used and the possible force field densities in the magnetic coils, depending on the frequencies used.
  • the furnace consists of a plurality of heating units arranged one behind the other in the material flow direction, each having a narrow induction coil with an associated linear flux concentrator.
  • the invention has the object, a known method and a known device for the thermal treatment of metal strands with the help of an induction furnace with flux concentrator to the effect that the heat required for the heat treatment of the metal strand heat even at high-speed metal strand can be made available and transmitted in a short time, at the same time even lower height of the induction coils of the induction furnace.
  • the claimed method is characterized in that by applying a transverse field flux concentrator made of amorphous ferromagnetic material at the metal strand moving at high speed, the metal temperature in the milliseconds to seconds range is adjusted by inductive heating.
  • the claimed application of the flux concentrator for inductive cross field heating means that no large stray field can form and that therefore the leakage of the magnetic field strength is limited to the pole faces of the flux concentrator.
  • the field densities are thus very high and thus a heating of the metal strand within a very short time on a short tape length is possible.
  • the use of the amorphous material for the flux concentrator provides for the inductive high frequencies used Bander stiirmung the advantage that the associated induction coils can be designed with a much lower overall height.
  • the method is further favorable to apply to processes of metal structure transformation after mechanical treatments. Here too, sufficient heat has to be transferred in a short time.
  • Another application of the method is to initiate diffusion and alloying processes in metallic coatings.
  • An apparatus for the thermal treatment of metal strands, in particular of steel strip, which is surrounded by a magnetic field at high provided by a flux concentrator magnetic field strength, solves the task according to the invention in that at each metal strand side - in metal bands at least on the two flat sides - parallel Arranged to the level of the metal strand side induction coils are arranged, whose cavity is filled by means of a flux concentrator with transverse field heating, which is made of amorphous ferromagnetic material.
  • the flux concentrator is designed approximately bow-shaped and spaced at both ends to the metal strand side has parallel end faces. This allows easier alignment with the metal strand.
  • the device According to other features of the device is provided that their arrangement is advantageous in towers with vertical metal strand guide and between arranged in the belt running direction at greater intervals guide roller pairs. Since the magnetic coils are generally located in areas of production facilities in which the metal strip after a coating for reasons of a high-quality surface for a certain time must not have tape contact with rollers, such systems are used in towers with vertical tape guide. The production costs for such towers are very high due to the requirements of intrinsic stability. Significantly lower overall heights of the magnet coils and thus significantly reduced production costs have an advantageous effect here.
  • the apparatus for the thermal treatment of metal strands, in particular of steel strip 1 has on each metal strand side 1a and 1b, in steel strip 1 on the flat sides 2, parallel to the plane 3 of the metal strand sides 1 a, 1b extending induction coils 4, the cavity 4a by means of a Flux Concentrator 5 is filled.
  • the flux concentrator 5 is made of amorphous ferromagnetic material. As can be seen, the flux concentrator 5 is designed approximately bow-shaped and has at both ends 5a and 5b to the metal strand side 1a and 1b out in each case spaced parallel end faces 5c.
  • This device can be used in towers with vertical metal strand guide and between in the belt running direction 6 at greater intervals arranged guide roller pairs.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Electromagnetism (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Coating With Molten Metal (AREA)
  • General Induction Heating (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Heat Treatment Of Articles (AREA)

Claims (7)

  1. Procédé de traitement thermique lors du revêtement de tronçons métalliques, notamment de feuillard d'acier (1), dans lequel on échauffe le tronçon métallique (1) en mouvement, déplacé à la vitesse correspondant à la quantité de production prédéfinie, en visant d'importants gradients thermiques par l'intermédiaire d'un concentrateur de flux (5),
    caractérisée en ce que par utilisation d'un concentrateur de flux à champ transversal (5) en matériau ferromagnétique amorphe, la température du tronçon métallique est réglée par échauffement par induction dans la plage des millisecondes à secondes, sur le tronçon métallique (1) déplacé à haute vitesse.
  2. Procédé selon la revendication 1,
    caractérisé par son utilisation sur des processus de la transformation de structures métalliques après des traitements mécaniques.
  3. Procédé selon la revendication 1,
    caractérisé par son utilisation pour l'initiation de processus de diffusion et d'alliages pour des revêtements métalliques.
  4. Procédé selon la revendication 1,
    caractérisé par son utilisation sur des processus de séchage et de recuisson lors du revêtement organique de tronçons métalliques (1).
  5. Dispositif de traitement thermique lors du revêtement de tronçons métalliques (1), notamment de feuillard d'acier, qui est entouré d'un champ magnétique à haute densité magnétique d'intensité de champ et un concentrateur de flux (5) étant prévu,
    caractérisé en ce que sur chaque côté du tronçon métallique (1a ; 1b) sur des feuillards d'acier (1), des bobines d'inductance (4) s'étendant à la parallèle du plan (3) du côté du tronçon métallique (1a; 1b), dont la cavité (4a) est remplie d'un concentrateur de flux (5) à échauffement par champ transversal fabriqué en matériau ferromagnétique amorphe sont disposées au moins sur les deux côtés plats (2).
  6. Dispositif selon la revendication 5,
    caractérisé en ce que le concentrateur de flux (5) est conçu sous forme approximativement d'un étrier et comporte sur ses deux extrémités (5a ; 5b) des surfaces frontales (5c) parallèles distancées par rapport au côté du tronçon métallique (1a; 1b).
  7. Dispositif selon l'une quelconque des revendications 5 ou 6,
    caractérisé par son agencement dans des tours avec guidage vertical du tronçon métallique et par des paires de rouleaux de guidage disposées à d'assez grandes distances dans le sens de déroulement du feuillard (6).
EP02769462A 2001-05-16 2002-05-02 Procede et dispositif con us pour le traitement thermique de barres metalliques, en particulier de rubans d'acier Expired - Lifetime EP1390551B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10123782A DE10123782A1 (de) 2001-05-16 2001-05-16 Verfahren und Vorrichtung zum thermischen Behandeln von Metallsträngen, insbesondere von Stahlband
DE10123782 2001-05-16
PCT/EP2002/004800 WO2002092861A1 (fr) 2001-05-16 2002-05-02 Procede et dispositif conçus pour le traitement thermique de barres metalliques, en particulier de rubans d'acier

Publications (2)

Publication Number Publication Date
EP1390551A1 EP1390551A1 (fr) 2004-02-25
EP1390551B1 true EP1390551B1 (fr) 2007-03-28

Family

ID=7684971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02769462A Expired - Lifetime EP1390551B1 (fr) 2001-05-16 2002-05-02 Procede et dispositif con us pour le traitement thermique de barres metalliques, en particulier de rubans d'acier

Country Status (5)

Country Link
EP (1) EP1390551B1 (fr)
AT (1) ATE358189T1 (fr)
DE (2) DE10123782A1 (fr)
TW (1) TW555862B (fr)
WO (1) WO2002092861A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB593195A (en) * 1944-02-05 1947-10-10 Westinghouse Electric Int Co Improvements in or relating to heating of strip metal, and the like by electromagnetic induction
JPS6298588A (ja) * 1985-10-25 1987-05-08 日本軽金属株式会社 横磁束型電磁誘導加熱装置
IT1229749B (it) * 1989-05-17 1991-09-10 Giovanni Arvedi Forno ad induzione di riscaldo ed omogeneizzazione della temperatura per la laminazione di nastri sottili di acciaio.
IT1253095B (it) * 1991-12-18 1995-07-10 Giovanni Arvedi Forno ad induzione perfezionato per il riscaldo o ripristino di temperatura in prodotti piani di siderurgia

Also Published As

Publication number Publication date
DE10123782A1 (de) 2002-11-21
ATE358189T1 (de) 2007-04-15
DE50209831D1 (de) 2007-05-10
EP1390551A1 (fr) 2004-02-25
WO2002092861A1 (fr) 2002-11-21
TW555862B (en) 2003-10-01

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