EP0120233A3 - Process for heat recovery during the heat treatment of metallic articles, and tunnel furnace therefor - Google Patents

Process for heat recovery during the heat treatment of metallic articles, and tunnel furnace therefor Download PDF

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Publication number
EP0120233A3
EP0120233A3 EP84101137A EP84101137A EP0120233A3 EP 0120233 A3 EP0120233 A3 EP 0120233A3 EP 84101137 A EP84101137 A EP 84101137A EP 84101137 A EP84101137 A EP 84101137A EP 0120233 A3 EP0120233 A3 EP 0120233A3
Authority
EP
European Patent Office
Prior art keywords
zone
heat
goods
cooling
heat transfer
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Withdrawn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
EP84101137A
Other languages
German (de)
French (fr)
Other versions
EP0120233A2 (en
Inventor
Joachim Dr.-Ing. Wünning
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0120233A2 publication Critical patent/EP0120233A2/en
Publication of EP0120233A3 publication Critical patent/EP0120233A3/en
Withdrawn legal-status Critical Current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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/767—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
    • 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
    • F27B9/3005—Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases

Abstract

Bei einem Verfahren zur Wärmerückgewinnung bei der Wärmebehandlung von metallischem Nutzgut wird das Nutz­ gut durch eine Vorheizzone (6), eine Behandlungszone (7), und eine Kühlzone (8) hindurchbewegt, wobei mittels eines gasförmigen Wärmeträgerstroms Wärme aus der Kühlzone in die Vorheizzone entgegen dem Nutzgutstrom übertragen wird. In a process for heat recovery at the Heat treatment of metallic goods becomes the benefit well through a preheating zone (6), a treatment zone (7), and a cooling zone (8) is moved through, wherein by means of a gaseous heat transfer heat from the cooling zone in transfer the preheating zone against the flow of useful goods becomes.

Um einen wesentlichen Teil der sonst in der Kühlzone abzuführenden Nutzwärme zum Aufheizen des Nutzgutes zurückzugewinnen, und zwar ohne größeren apparativen Aufwand, wird der Wärmeträger in der Kühl- und in der Vor­ heizzone jeweils im Gegenstrom oder im Kreuzgegenstrom zu dem Nutzgut zwangsweise durch das in Gestalt von Schütt- oder Stapelgut vorliegende Nutzgut hindurchgeführt und von der Kühlzone in die Vorheizzone geleitet. Die Wärme­ kapazitätsströme des Schütt- oder Stapelgutes sowie des Wärmeträgers in der Kühl - und/oder Vorheizzone werden etwa gleich groß gemacht, wobei die beiden Zonen derart bemessen werden, daß der thermische Austauschgrad ε zwischen dem Nutzgut und dem Wärmeträger jeweils größer 0,5 ist. To a substantial part of the otherwise in the cooling zone useful heat to be dissipated for heating the goods to win back, and without major apparatus Effort, the heat transfer medium in the cooling and in the front heating zone in countercurrent or crosscurrent the useful goods by means of bulk or stacked goods are passed through and from the cooling zone into the preheating zone. The warmth capacity flows of the bulk or stacked goods as well as the Heat transfer medium in the cooling and / or preheating zone made about the same size, with the two zones like this be dimensioned such that the degree of thermal exchange ε between the product and the heat transfer medium each larger Is 0.5.

EP84101137A 1983-03-01 1984-02-04 Process for heat recovery during the heat treatment of metallic articles, and tunnel furnace therefor Withdrawn EP0120233A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3307071A DE3307071C2 (en) 1983-03-01 1983-03-01 Continuous furnace for the heat treatment of metallic workpieces
DE3307071 1983-03-01

Publications (2)

Publication Number Publication Date
EP0120233A2 EP0120233A2 (en) 1984-10-03
EP0120233A3 true EP0120233A3 (en) 1985-07-03

Family

ID=6192115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84101137A Withdrawn EP0120233A3 (en) 1983-03-01 1984-02-04 Process for heat recovery during the heat treatment of metallic articles, and tunnel furnace therefor

Country Status (4)

Country Link
US (1) US4582301A (en)
EP (1) EP0120233A3 (en)
JP (1) JPS59197514A (en)
DE (1) DE3307071C2 (en)

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DE3434906C2 (en) * 1984-09-22 1993-03-04 Otto Junker Gmbh, 5107 Simmerath Device for preheating metallic material
DE3441287A1 (en) * 1984-11-12 1986-05-15 Paul Schneider Rohrleitungsbau GmbH, 8633 Rödental Tunnel kiln
DE3787007T2 (en) * 1986-12-19 1994-01-20 Babcock Hitachi Kk Process for calcining a denitration catalyst.
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JP2936198B2 (en) * 1989-08-16 1999-08-23 大同特殊鋼株式会社 Work cooling device
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US5350160A (en) * 1989-09-29 1994-09-27 Consolidated Engineering Company Method and apparatus for heat treating metal castings
JP2546199Y2 (en) * 1991-01-31 1997-08-27 マツダ株式会社 Work cooling device
DE4208485C2 (en) * 1992-03-17 1997-09-04 Wuenning Joachim Method and device for quenching metallic workpieces
DE4228006A1 (en) * 1992-08-24 1994-03-03 Ngk Insulators Ltd Continuous roller hearth furnace
US5772429A (en) * 1995-12-18 1998-06-30 Fehrenbach; Michael James Portable oven for heating of tiles
JP3378974B2 (en) * 1995-12-28 2003-02-17 同和鉱業株式会社 Metal heat treatment equipment
WO1997030805A1 (en) * 1996-02-23 1997-08-28 Consolidated Engineering Company, Inc. System and process for reclaiming sand
US5924473A (en) * 1996-12-20 1999-07-20 General Kinematics Corporation Vibratory sand reclamation system
US6453982B1 (en) 1996-12-20 2002-09-24 General Kinematics Corporation Sand cleaning apparatus
US5901775A (en) * 1996-12-20 1999-05-11 General Kinematics Corporation Two-stage heat treating decoring and sand reclamation system
US5738162A (en) * 1997-02-20 1998-04-14 Consolidated Engineering Company, Inc. Terraced fluidized bed
US5997286A (en) * 1997-09-11 1999-12-07 Ford Motor Company Thermal treating apparatus and process
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US6352430B1 (en) * 1998-10-23 2002-03-05 Goodrich Corporation Method and apparatus for cooling a CVI/CVD furnace
DE19849757A1 (en) * 1998-10-28 2000-05-04 Vinz Peter Continuously operated roller hearth furnace with downstream forced-convective annealing cooling
US6217317B1 (en) 1998-12-15 2001-04-17 Consolidated Engineering Company, Inc. Combination conduction/convection furnace
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EP1063319B1 (en) * 1999-06-04 2005-12-07 Goodrich Corporation Method and apparatus for cooling a CVI/CVD furnace
US6910522B2 (en) * 1999-07-29 2005-06-28 Consolidated Engineering Company, Inc. Methods and apparatus for heat treatment and sand removal for castings
US6672367B2 (en) 1999-07-29 2004-01-06 Consolidated Engineering Company, Inc. Methods and apparatus for heat treatment and sand removal for castings
US7275582B2 (en) * 1999-07-29 2007-10-02 Consolidated Engineering Company, Inc. Methods and apparatus for heat treatment and sand removal for castings
US6622775B2 (en) 2000-05-10 2003-09-23 Consolidated Engineering Company, Inc. Method and apparatus for assisting removal of sand moldings from castings
AU2001280541A1 (en) 2000-07-17 2002-01-30 Consolidated Engineering Company, Inc. Methods and apparatus for utilization of chills for castings
US6533996B2 (en) * 2001-02-02 2003-03-18 The Boc Group, Inc. Method and apparatus for metal processing
US7338629B2 (en) * 2001-02-02 2008-03-04 Consolidated Engineering Company, Inc. Integrated metal processing facility
MXPA03006906A (en) * 2001-02-02 2004-01-29 Cons Eng Co Inc Integrated metal processing facility.
US7331374B2 (en) 2001-05-09 2008-02-19 Consolidated Engineering Company, Inc. Method and apparatus for assisting removal of sand moldings from castings
AU2003251972A1 (en) * 2002-07-18 2004-02-09 Consolidated Engineering Company, Inc. Method and system for processing castings
WO2006004756A2 (en) * 2004-06-28 2006-01-12 Consolidated Engineering Company, Inc. Method and apparatus for removal of flashing and blockages from a casting
US20060054294A1 (en) * 2004-09-15 2006-03-16 Crafton Scott P Short cycle casting processing
US20060103059A1 (en) * 2004-10-29 2006-05-18 Crafton Scott P High pressure heat treatment system
WO2007147091A2 (en) * 2006-06-15 2007-12-21 Consolidated Engineering Company, Inc. Methods and system for manufacturing castings utilizing an automated flexible manufacturing system
US20080236779A1 (en) * 2007-03-29 2008-10-02 Crafton Scott P Vertical heat treatment system
DE102008005259B4 (en) * 2008-01-18 2011-12-08 Carl Kramer Process for saving energy in heat treatment plants with moved by heating and cooling part Good
US8430963B2 (en) * 2010-01-07 2013-04-30 Primestar Solar, Inc. Cool-down system and method for a vapor deposition system
FI20105986A0 (en) * 2010-09-24 2010-09-24 Outotec Oyj METHOD FOR STARTING A SINTER FURNACE AND SINTER EQUIPMENT
US8298475B2 (en) * 2010-10-27 2012-10-30 King Yuan Dar Metal Enterprise Co., Ltd. High temperature and economizing furnace system
DE102012010382A1 (en) * 2012-05-29 2013-12-05 Bilstein Gmbh & Co. Kg Method and arrangement for recovering heat energy during the heat treatment of cold rolled steel strip in a bell annealing furnace
AT513628B1 (en) * 2013-04-29 2014-06-15 Cpa Comp Process Automation Gmbh Method and apparatus for heat treating long products
US9523136B2 (en) 2014-03-26 2016-12-20 King Yuan Dar Metal Enterprise Co., Ltd. Continuous furnace system
CN103994656B (en) * 2014-05-29 2015-11-04 山东利德思节能环保科技有限公司 Cooling Section of Tunnel Kiln heat pipe heat exchanging system and using method thereof
CN105132666A (en) * 2014-05-30 2015-12-09 宝山钢铁股份有限公司 Pickling-free continuous annealing furnace reducing gas recycle use system and use method thereof
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DE102021109672A1 (en) 2021-04-16 2022-10-20 Aerospace Transmission Technologies GmbH Device for the heat treatment of metallic workpieces
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WO2023235969A1 (en) * 2022-06-07 2023-12-14 Innord Inc. Heat recovery system for kiln and method for recovering heat from solids processed in a kiln

Citations (6)

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Publication number Priority date Publication date Assignee Title
FR458048A (en) * 1913-02-25 1913-10-01 Georg Richter Method and apparatus for annealing or cementing articles
GB519325A (en) * 1938-09-20 1940-03-21 Curran Brothers Ltd Improvements in or relating to heating furnaces
FR874626A (en) * 1941-04-11 1942-08-13 E I C T Recirculation process for industrial furnaces
FR1001299A (en) * 1946-04-11 1952-02-21 Continuous tunnel furnace with thermal recovery
FR2038592A5 (en) * 1969-03-19 1971-01-08 Koho Es Gepipari Miniszterium Tunnel kiln for the firing of refractory - ceramic products
US4093195A (en) * 1977-01-19 1978-06-06 Holcroft & Company Carburizing furnace

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Patent Citations (6)

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Publication number Priority date Publication date Assignee Title
FR458048A (en) * 1913-02-25 1913-10-01 Georg Richter Method and apparatus for annealing or cementing articles
GB519325A (en) * 1938-09-20 1940-03-21 Curran Brothers Ltd Improvements in or relating to heating furnaces
FR874626A (en) * 1941-04-11 1942-08-13 E I C T Recirculation process for industrial furnaces
FR1001299A (en) * 1946-04-11 1952-02-21 Continuous tunnel furnace with thermal recovery
FR2038592A5 (en) * 1969-03-19 1971-01-08 Koho Es Gepipari Miniszterium Tunnel kiln for the firing of refractory - ceramic products
US4093195A (en) * 1977-01-19 1978-06-06 Holcroft & Company Carburizing furnace

Also Published As

Publication number Publication date
US4582301A (en) 1986-04-15
EP0120233A2 (en) 1984-10-03
DE3307071C2 (en) 1986-05-22
DE3307071A1 (en) 1984-09-06
JPS59197514A (en) 1984-11-09

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