US20090194258A1 - Thermal isolation screen for isolating an electromagnetic inductor, and heat treatment installation comprising such a screen - Google Patents

Thermal isolation screen for isolating an electromagnetic inductor, and heat treatment installation comprising such a screen Download PDF

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Publication number
US20090194258A1
US20090194258A1 US12/097,416 US9741606A US2009194258A1 US 20090194258 A1 US20090194258 A1 US 20090194258A1 US 9741606 A US9741606 A US 9741606A US 2009194258 A1 US2009194258 A1 US 2009194258A1
Authority
US
United States
Prior art keywords
tubes
thermal insulation
screen according
blocks
insulation screen
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.)
Abandoned
Application number
US12/097,416
Other languages
English (en)
Inventor
Philippe Roehr
Jean-Yves Ren
Jean Hellegouarc'h
Jean-Louis Bigan
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.)
Fives Celes
Original Assignee
Fives Celes
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 Fives Celes filed Critical Fives Celes
Assigned to FIVES CELES reassignment FIVES CELES ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BIGAN, JEAN-LOUIS, HELLEGOUARC'H, JEAN, REN, JEAN-YVES, ROEHR, PHILIPPE
Assigned to FIVES CELES reassignment FIVES CELES CORRECTIVE ASSIGNMENT TO CORRECT THE ADDRESS OF THE ASSIGNEE PREVIOUSLY RECORDED ON REEL 021583 FRAME 0457. ASSIGNOR(S) HEREBY CONFIRMS THE CITY FOR THE ASSIGNEE'S ADDRESS SHOULD READ LAUTENBAUCH. Assignors: BIGAN, JEAN-LOUIS, HELLEGOUARC'H, JEAN, REN, JEAN-YVES, ROEHR, PHILIPPE
Assigned to FIVES CELES reassignment FIVES CELES CORRECTIVE ASSIGNMENT TO CORRECT THE ADDRESS OF THE ASSIGNEE PREVIOUSLY RECORDED ON REEL 021764 FRAME 0772. ASSIGNOR(S) HEREBY CONFIRMS THE THE CITY FOR THE ASSIGNEE'S ADDRESS SHOULD READ LAUTENBACH. Assignors: BIGAN, JEAN-LOUIS, HELLEGOUARC'H, JEAN, REN, JEAN-YVES, ROEHR, PHILIPPE
Publication of US20090194258A1 publication Critical patent/US20090194258A1/en
Abandoned legal-status Critical Current

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    • 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
    • C21D9/60—Continuous furnaces for strip or wire with induction 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
    • 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
    • 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
    • C21D9/561—Continuous furnaces for strip or wire with a controlled atmosphere or vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/36—Arrangements of heating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0006—Electric heating elements or system
    • 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
    • H05B6/36—Coil arrangements
    • 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
    • H05B6/36—Coil arrangements
    • H05B6/365—Coil arrangements using supplementary conductive or ferromagnetic pieces
    • 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
    • C21D1/34—Methods of heating
    • C21D1/42—Induction heating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the electromagnetic coils for the induction heating are located on the opposite side of the screen from the product to be heated. To obtain good energy efficiency, it is necessary for these coils to be as close as possible to the product to be heated. It is therefore desirable for the thickness of the various walls of the screen to be as small as possible, while still ensuring sufficient thermal protection.
  • the tendency is to increase the temperature of the heated product, especially for metallurgical reasons, such that the risks of raising the temperature of the support for the screen above the acceptable limit increase substantially.
  • the thermal screen according to the invention protects the support by reducing the operating temperature thereof.
  • the thermal screen is optimized when the induced currents are extremely small. To do this, fins having a sufficiently small area perpendicular to the magnetic field are provided. A good result is obtained by reducing the pitch of the slots, by varying the width of the slot and/or by varying the width of the fin and its thickness.
  • the fins may be produced by lengths of wire that are oriented radially and fixed to the cooled tubes.
  • the blocks 7 are formed by substantially rectangular parallelepipedal blocks, the two longitudinal faces of which include recesses 7 a , 7 b in the form of cylindrical portions suitable for following the contour of two successive tubes 8 .
  • the blocks 7 may thus be engaged between two straight tubes 8 .
  • the blocks 7 bear against one another along the longitudinal direction of the tubes 8 .
  • a small transverse space 9 ( FIG. 4 ) may be left between two adjacent blocks 7 .
  • Each fin 12 is formed by a metal strip preferably extending over the entire length of the tube 8 .
  • the strip has a projecting central longitudinal portion 12 a engaged in a free space 13 between the rear edges of two successive blocks 7 .
  • the central portion 12 a comes into contact with the wall of the tube 8 to which it is preferably welded.
  • the metal strip extends on either side of the central portion 12 a , symmetrically or asymmetrically, with blades 12 b , 12 c meeting substantially at mid-width of each block 7 .
  • Such an arrangement makes it possible to limit the length of the path for discharging the heat into the tube 8 to substantially one half of the width of a block 7 .
  • the cross section of the thermal screen has a substantially rectangular closed outline.
  • the thermal screen may consist, on each side of the strip, of a plate having several layers (insulating blocks, cooled tubes, conducting means).
  • the cross section of the screen would be a straight segment, as shown in FIG. 4 .
  • a plate-shaped heat screen according to the invention is particularly suitable for installations such as those intended in Patent Applications FR 05/06462 and FR 05/06463 filed on 24 Jun. 2005 by the same filing company CELES.
  • the central portion 12 a of the fin has the shape of a dome with its convex side turned towards the tube 8 , said dome having oblong openings 14 for welding it.
  • the projecting central portion 12 a has a concavity forming a cradle for following the facing portion of the tube 8 and providing a larger contact area for heat transfer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)
  • Furnace Details (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
US12/097,416 2006-01-04 2006-12-26 Thermal isolation screen for isolating an electromagnetic inductor, and heat treatment installation comprising such a screen Abandoned US20090194258A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0600053 2006-01-04
FR0600053A FR2895871B1 (fr) 2006-01-04 2006-01-04 Ecran d'isolation thermique pour isoler un inducteur electromagnetique, et installation de traitement thermique comportant un tel ecran
PCT/FR2006/002879 WO2007077363A2 (fr) 2006-01-04 2006-12-26 Ecran d'isolation thermique pour isoler un inducteur electromagnetique, et installation de traitement thermique comportant un tel ecran.

Publications (1)

Publication Number Publication Date
US20090194258A1 true US20090194258A1 (en) 2009-08-06

Family

ID=37081459

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/097,416 Abandoned US20090194258A1 (en) 2006-01-04 2006-12-26 Thermal isolation screen for isolating an electromagnetic inductor, and heat treatment installation comprising such a screen

Country Status (10)

Country Link
US (1) US20090194258A1 (ja)
EP (1) EP1969149B1 (ja)
JP (1) JP5290768B2 (ja)
CN (1) CN101484594B (ja)
BR (1) BRPI0620872A2 (ja)
ES (1) ES2777839T3 (ja)
FR (1) FR2895871B1 (ja)
RU (1) RU2416064C2 (ja)
WO (1) WO2007077363A2 (ja)
ZA (1) ZA200805523B (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900006433A1 (it) * 2019-04-29 2020-10-29 Rotelec Sa Apparato di riscaldamento di prodotti metallici

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0812864D0 (en) 2008-07-15 2008-08-20 Cxr Ltd Coolign anode
CN109579515A (zh) * 2018-11-26 2019-04-05 太原开元智能装备有限公司 一种外热式真空连续烧结炉

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3004328A (en) * 1956-02-29 1961-10-17 Foster Wheeler Corp Fin and tube assembly and method of bonding same
US6404799B1 (en) * 1999-02-03 2002-06-11 Nippon Steel Corporation Water-cooling panel for furnace wall and furnace cover of arc furnace
US6693264B2 (en) * 2001-03-06 2004-02-17 Celes Vacuum and gas tight enclosure for induction heating system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119491B (en) * 1981-11-16 1985-01-30 Kudinov Gennady A Cooling plate for metallurgical furnaces
CN2098779U (zh) * 1991-08-04 1992-03-11 吴志光 电磁热管
JP3116730B2 (ja) * 1994-07-21 2000-12-11 三菱電機株式会社 電磁誘導加熱装置の断熱部材
JP3479868B2 (ja) * 1997-12-29 2003-12-15 北芝電機株式会社 誘導加熱装置
CN2647868Y (zh) * 2003-08-27 2004-10-13 黄石山力涂镀层工程技术有限公司 带钢连续热处理炉电辐射管加热装置
CN2645396Y (zh) * 2003-09-09 2004-09-29 王文生 一种电磁感应热管

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3004328A (en) * 1956-02-29 1961-10-17 Foster Wheeler Corp Fin and tube assembly and method of bonding same
US6404799B1 (en) * 1999-02-03 2002-06-11 Nippon Steel Corporation Water-cooling panel for furnace wall and furnace cover of arc furnace
US6693264B2 (en) * 2001-03-06 2004-02-17 Celes Vacuum and gas tight enclosure for induction heating system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900006433A1 (it) * 2019-04-29 2020-10-29 Rotelec Sa Apparato di riscaldamento di prodotti metallici
WO2020221770A1 (en) * 2019-04-29 2020-11-05 Rotelec Sa Apparatus for heating metal products

Also Published As

Publication number Publication date
RU2008127076A (ru) 2010-01-10
WO2007077363A2 (fr) 2007-07-12
ES2777839T3 (es) 2020-08-06
FR2895871A1 (fr) 2007-07-06
ZA200805523B (en) 2009-04-29
CN101484594A (zh) 2009-07-15
EP1969149A2 (fr) 2008-09-17
JP2009522740A (ja) 2009-06-11
JP5290768B2 (ja) 2013-09-18
EP1969149B1 (fr) 2020-01-29
CN101484594B (zh) 2011-08-10
BRPI0620872A2 (pt) 2011-11-29
FR2895871B1 (fr) 2008-02-29
WO2007077363A3 (fr) 2007-08-23
RU2416064C2 (ru) 2011-04-10

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Legal Events

Date Code Title Description
AS Assignment

Owner name: FIVES CELES, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ROEHR, PHILIPPE;REN, JEAN-YVES;HELLEGOUARC'H, JEAN;AND OTHERS;REEL/FRAME:021583/0457

Effective date: 20080725

AS Assignment

Owner name: FIVES CELES, FRANCE

Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE ADDRESS OF THE ASSIGNEE PREVIOUSLY RECORDED ON REEL 021583 FRAME 0457;ASSIGNORS:ROEHR, PHILIPPE;REN, JEAN-YVES;HELLEGOUARC'H, JEAN;AND OTHERS;REEL/FRAME:021764/0772

Effective date: 20080725

AS Assignment

Owner name: FIVES CELES, FRANCE

Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE ADDRESS OF THE ASSIGNEE PREVIOUSLY RECORDED ON REEL 021764 FRAME 0772;ASSIGNORS:ROEHR, PHILIPPE;REN, JEAN-YVES;HELLEGOUARC'H, JEAN;AND OTHERS;REEL/FRAME:022145/0848

Effective date: 20080725

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION