EP1280381A3 - Inductive heating device and process of billets with a billets heating coil - Google Patents

Inductive heating device and process of billets with a billets heating coil Download PDF

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Publication number
EP1280381A3
EP1280381A3 EP02011226A EP02011226A EP1280381A3 EP 1280381 A3 EP1280381 A3 EP 1280381A3 EP 02011226 A EP02011226 A EP 02011226A EP 02011226 A EP02011226 A EP 02011226A EP 1280381 A3 EP1280381 A3 EP 1280381A3
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EP
European Patent Office
Prior art keywords
heating coil
block heating
billets
zones
phase
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.)
Withdrawn
Application number
EP02011226A
Other languages
German (de)
French (fr)
Other versions
EP1280381A2 (en
Inventor
Stefan Dipl.-Ing. Beer
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.)
I A S Induktions- Anlage and Service & Co KG GmbH
Original Assignee
I A S Induktions- Anlage and Service & Co KG GmbH
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
Priority claimed from DE10206269A external-priority patent/DE10206269A1/en
Application filed by I A S Induktions- Anlage and Service & Co KG GmbH filed Critical I A S Induktions- Anlage and Service & Co KG GmbH
Publication of EP1280381A2 publication Critical patent/EP1280381A2/en
Publication of EP1280381A3 publication Critical patent/EP1280381A3/en
Withdrawn legal-status Critical Current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
    • 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
    • H05B6/06—Control, e.g. of temperature, of power

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)

Abstract

Die Vorrichtung dient zur induktiven Blockerwärmung mit einer ein- oder mehrlagigen Blockerwärmungsspule (4) für runde Bolzen (5), insbesondere aus Kupfer, Aluminium und deren Legierungen sowie ferritische und austenitische Werkstoffe größerer Durchmesser, wobei die Blockerwärmungsspule (4) aus einer oder mehreren nacheinander angeordneten, galvanisch getrennten Zonen besteht, die über eine elektrische Schalteinrichtung und eine Steuereinheit mit elektrischer Energie aus dem Drehstromnetz versorgt werden, und ist dadurch gekennzeichnet, daß die Blockerwärmungsspule (4) aus mehreren hinsichtlich Frequenz und Phase des induktiven Feldes synchron geregelten Zonen (Z1, Z2 bis Zn) besteht, und daß für die Stromeinspeisung zu jeder Zone (Z1 bis Zn) der Blockerwärmungsspule (4) ein Umrichter (2) mit variabler Frequenz und modularem Aufbau vorgesehen ist, der aus mehreren leistungsmäßig in sich geschlossenen Einheiten mit DS-Netzeinspeisung und Synchronisation von Phase und Frequenz der Ausgangsspannung besteht. Die Leistung der Zonen Z1 bis Zn der Blockerwärmungsspule wird an Hand der zugeordneten gemessenen Zonentemperaturen geregelt. Für die Leistungsregelung werden die Materialwerte (und deren Temperaturabhängigkeit), die Geometrie des Bolzens und die Energieaufnahmefähigkeit des Bolzens (dP/dt) einbezogen. Ziel der Regelung ist das Erreichen eines vorgegebenen Temperaturprofils (im Toleranzbereich) in kürzester Erwärmungszeit, wobei dieses Kriterium gleichzeitig den maximalen Wirkungsgrad der Erwärmung bestimmt.

Figure 00000001
The device is used for inductive block heating with a single or multi-layer block heating coil (4) for round bolts (5), in particular copper, aluminum and their alloys and ferritic and austenitic materials of larger diameter, wherein the block heating coil (4) from one or more successively arranged, galvanically isolated zones, which are supplied via an electrical switching device and a control unit with electrical energy from the three-phase network, and is characterized in that the block heating coil (4) of a plurality of synchronous with respect to frequency and phase of the inductive field controlled zones (Z1, Z2 to Zn), and that for the power supply to each zone (Z1 to Zn) of the block heating coil (4) is provided a variable frequency converter (2) of modular construction consisting of a plurality of self-contained units with DS mains supply and synchronization of phase and frequency enz the output voltage is. The power of the zones Z1 to Zn of the block heating coil is controlled by the associated measured zone temperatures. For the power control, the material values (and their temperature dependence), the geometry of the bolt and the energy absorption capacity of the bolt (dP / dt) are included. The aim of the control is to achieve a predetermined temperature profile (in the tolerance range) in the shortest heating time, this criterion also determines the maximum efficiency of heating.
Figure 00000001
EP02011226A 2001-07-25 2002-05-22 Inductive heating device and process of billets with a billets heating coil Withdrawn EP1280381A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10135396 2001-07-25
DE10135396 2001-07-25
DE10206269 2002-02-15
DE10206269A DE10206269A1 (en) 2001-07-25 2002-02-15 Device and method for inductive block heating with a block heating coil

Publications (2)

Publication Number Publication Date
EP1280381A2 EP1280381A2 (en) 2003-01-29
EP1280381A3 true EP1280381A3 (en) 2005-12-21

Family

ID=26009742

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02011226A Withdrawn EP1280381A3 (en) 2001-07-25 2002-05-22 Inductive heating device and process of billets with a billets heating coil

Country Status (2)

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US (1) US6815649B2 (en)
EP (1) EP1280381A3 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004004420A1 (en) * 2002-06-26 2004-01-08 Mitsui Engineering & Shipbuilding Co.,Ltd. Induction heating method and unit
DE10323796B3 (en) * 2003-05-23 2005-02-10 Thyssenkrupp Nirosta Gmbh Apparatus for heating a metal strip and equipment equipped with such a device for producing hot-rolled metal strip
JP4295141B2 (en) * 2004-03-12 2009-07-15 株式会社吉野工作所 Work heating apparatus and work heating method
US7582851B2 (en) * 2005-06-01 2009-09-01 Inductotherm Corp. Gradient induction heating of a workpiece
US7683288B2 (en) * 2005-08-12 2010-03-23 Thermatool Corp. System and method of computing the operating parameters of a forge welding machine
US20070095878A1 (en) * 2005-11-03 2007-05-03 Paul Scott Method and system for monitoring and controlling characteristics of the heat affected zone in a weld of metals
SI2020160T1 (en) * 2006-04-24 2018-03-30 Inductoheat, Inc. Electric induction heat treatment of an end of tubular material
DE102007050341A1 (en) * 2007-10-12 2009-04-23 E.G.O. Commercial Electronics Ag Induction module, arrangement of several induction modules and method for setting up such an induction module
EP2223566B1 (en) * 2007-11-03 2015-06-24 Inductotherm Corp. Electric power system for electric induction heating and melting of materials in a susceptor vessel
US10034331B2 (en) * 2007-12-27 2018-07-24 Inductoheat, Inc. Controlled electric induction heating of an electrically conductive workpiece in a solenoidal coil with flux compensators
DE202008012597U1 (en) * 2008-09-22 2009-01-15 Extrutec Gmbh Device for heating rod-like workpieces
FR2951606B1 (en) * 2009-10-19 2012-01-06 Electricite De France INDUCTION HEATING METHOD IN A DEVICE COMPRISING MAGNETICALLY COUPLED INDUCTORS
US10973368B2 (en) * 2012-12-12 2021-04-13 The Vollrath Company, L.L.C. Three dimensional induction rethermalizing stations and control systems
US9277749B2 (en) 2014-02-07 2016-03-08 Gojo Industries, Inc. Compositions and methods with efficacy against spores and other organisms
US9677700B2 (en) 2014-10-27 2017-06-13 Ajax Tocco Magnethermic Corporation Pipe heating apparatus and methods for uniform end heating and controlled heating length
EP3790180B1 (en) * 2019-09-04 2022-08-10 IAS GmbH Device and method for inductive heating of metal material

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307276A (en) * 1976-07-30 1981-12-22 Nippon Steel Corporation Induction heating method for metal products
DE3040820A1 (en) * 1980-10-30 1982-05-13 Aeg-Elotherm Gmbh, 5630 Remscheid Inductive heating appts. for e.g. welded pipes - has controlled rectifier networks supplying adjacent inductors coupled to common firing control
DE3246273A1 (en) * 1982-12-14 1984-06-14 Naučno-proizvodstvennoe ob"edinenie po technologii mašinostroenija CNIITMAŠ, Moskva System for induction heating of products
EP0143144A2 (en) * 1983-11-26 1985-06-05 AEG - Elotherm GmbH Arrangement and method for heating by induction with several inductor workpieces, in particular tubes and rods
DE3710085A1 (en) * 1987-03-27 1988-10-13 Asea Brown Boveri Device for the inductive heating of a workpiece by means of a plurality of inductors
US4845332A (en) * 1987-09-16 1989-07-04 National Steel Corp. Galvanneal induction furnace temperature control system
JP2000040580A (en) * 1998-07-21 2000-02-08 Mitsubishi Electric Corp Induction heating device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63161219A (en) 1986-12-22 1988-07-04 Mikio Umeoka Foundation pile and its construction

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307276A (en) * 1976-07-30 1981-12-22 Nippon Steel Corporation Induction heating method for metal products
DE3040820A1 (en) * 1980-10-30 1982-05-13 Aeg-Elotherm Gmbh, 5630 Remscheid Inductive heating appts. for e.g. welded pipes - has controlled rectifier networks supplying adjacent inductors coupled to common firing control
DE3246273A1 (en) * 1982-12-14 1984-06-14 Naučno-proizvodstvennoe ob"edinenie po technologii mašinostroenija CNIITMAŠ, Moskva System for induction heating of products
EP0143144A2 (en) * 1983-11-26 1985-06-05 AEG - Elotherm GmbH Arrangement and method for heating by induction with several inductor workpieces, in particular tubes and rods
DE3710085A1 (en) * 1987-03-27 1988-10-13 Asea Brown Boveri Device for the inductive heating of a workpiece by means of a plurality of inductors
US4845332A (en) * 1987-09-16 1989-07-04 National Steel Corp. Galvanneal induction furnace temperature control system
JP2000040580A (en) * 1998-07-21 2000-02-08 Mitsubishi Electric Corp Induction heating device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 05 14 September 2000 (2000-09-14) *

Also Published As

Publication number Publication date
EP1280381A2 (en) 2003-01-29
US20030019868A1 (en) 2003-01-30
US6815649B2 (en) 2004-11-09

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