EP1673483B8 - Method for heat-treating iron-containing materials - Google Patents

Method for heat-treating iron-containing materials Download PDF

Info

Publication number
EP1673483B8
EP1673483B8 EP04765727A EP04765727A EP1673483B8 EP 1673483 B8 EP1673483 B8 EP 1673483B8 EP 04765727 A EP04765727 A EP 04765727A EP 04765727 A EP04765727 A EP 04765727A EP 1673483 B8 EP1673483 B8 EP 1673483B8
Authority
EP
European Patent Office
Prior art keywords
heat
heating chamber
endothermic gas
treating
containing materials
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.)
Active
Application number
EP04765727A
Other languages
German (de)
French (fr)
Other versions
EP1673483B1 (en
EP1673483A1 (en
Inventor
Philippe Grognet
Hans-Peter Schmidt
Günter WAGENDORFER
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.)
Messer Austria GmbH
Air Liquide Deutschland GmbH
Messer Group GmbH
Messer France SAS
Original Assignee
Messer Austria GmbH
Air Liquide Deutschland GmbH
Messer Group GmbH
Messer France SAS
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 Messer Austria GmbH, Air Liquide Deutschland GmbH, Messer Group GmbH, Messer France SAS filed Critical Messer Austria GmbH
Priority to PL04765727T priority Critical patent/PL1673483T3/en
Publication of EP1673483A1 publication Critical patent/EP1673483A1/en
Publication of EP1673483B1 publication Critical patent/EP1673483B1/en
Application granted granted Critical
Publication of EP1673483B8 publication Critical patent/EP1673483B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • C21D1/76—Adjusting the composition of the atmosphere
    • 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
    • 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
    • C21D1/76—Adjusting the composition of the atmosphere
    • C21D1/763—Adjusting the composition of the atmosphere using a catalyst
    • 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
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/613—Gases; Liquefied or solidified normally gaseous material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Furnace Details (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Tunnel Furnaces (AREA)

Abstract

The invention relates to a method for heat-treating, in a protective atmosphere from endothermic gas mixtures, iron-containing materials, especially for annealing tubes, profiles, wires, rods and sheets that consist of metal or steel, in a heat-treating installation that comprises a cooling tunnel and a heating chamber. According to the invention, pure endothermic gas or endothermic gas partially rarefied with nitrogen and additionally pure nitrogen are supplied separately and in different areas of the installation, thereby reducing the time and costs required for the heat treatment process, increasing product quality and allowing for a safe process conduction. The flow profile generated throughout the entire furnace preferably in the heating chamber feed direction considerably reduces the deposition of solids in the cooling tunnel and the heating chamber end.
EP04765727A 2003-10-08 2004-10-01 Method for heat-treating iron-containing materials Active EP1673483B8 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04765727T PL1673483T3 (en) 2003-10-08 2004-10-01 Method for heat-treating iron-containing materials

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10347312A DE10347312B3 (en) 2003-10-08 2003-10-08 Process for the heat treatment of iron materials
PCT/EP2004/010951 WO2005035799A1 (en) 2003-10-08 2004-10-01 Method for heat-treating iron-containing materials

Publications (3)

Publication Number Publication Date
EP1673483A1 EP1673483A1 (en) 2006-06-28
EP1673483B1 EP1673483B1 (en) 2010-02-24
EP1673483B8 true EP1673483B8 (en) 2010-08-11

Family

ID=34306375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04765727A Active EP1673483B8 (en) 2003-10-08 2004-10-01 Method for heat-treating iron-containing materials

Country Status (6)

Country Link
EP (1) EP1673483B8 (en)
AT (1) ATE458837T1 (en)
DE (2) DE10347312B3 (en)
ES (1) ES2341861T3 (en)
PL (1) PL1673483T3 (en)
WO (1) WO2005035799A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT502238B1 (en) * 2005-05-12 2007-12-15 Ebner Ind Ofenbau PROCESS FOR BATCH HEAT TREATMENT OF REFRIGERATED PRODUCTS
ES2528001T3 (en) 2011-02-10 2015-02-03 Schwartz, Eva Oven
CN103805840B (en) * 2012-11-15 2016-12-21 宝山钢铁股份有限公司 A kind of high formability galvanizing ultrahigh-strength steel plates and manufacture method thereof
DE102013014815A1 (en) * 2013-09-10 2015-03-12 Ipsen International Gmbh Control system for an endogas generator, and method for controlling at least one endogas generator

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3950192A (en) * 1974-10-30 1976-04-13 Monsanto Company Continuous carburizing method
US4288062A (en) * 1979-08-09 1981-09-08 Holcroft Apparatus for control and monitoring of the carbon potential of an atmosphere in a heat-processing furnace
GB2108156B (en) * 1981-09-19 1986-01-15 British Oxygen Co Ltd Heat treatment of metals
FR2527641A1 (en) * 1982-05-28 1983-12-02 Air Liquide PROCESS FOR THERMALLY TREATING METALLIC PARTS THROUGH CARBURATION
DE3630833A1 (en) * 1986-09-10 1988-03-17 Linde Ag METHOD AND DEVICE FOR HEAT TREATING METAL WORKPIECES
FR2623209B1 (en) * 1987-11-17 1993-09-03 Air Liquide PROCESS OF HEAT TREATMENT UNDER NITROGEN AND HYDROCARBON GAS ATMOSPHERE
DE3828134A1 (en) * 1988-08-18 1990-02-22 Linde Ag METHOD FOR THE HEAT TREATMENT OF WORKPIECES
FR2649123B1 (en) * 1989-06-30 1991-09-13 Air Liquide METHOD FOR HEAT TREATING METALS
DE19545764C2 (en) * 1995-12-07 2000-02-17 Linde Ag Process for producing protective gas for a heat treatment furnace and heat treatment plant
DE19738653A1 (en) * 1997-09-04 1999-03-11 Messer Griesheim Gmbh Method and device for heat treating parts
DE10023409A1 (en) * 2000-05-12 2001-11-15 Linde Gas Ag Gas generator used for producing carbon monoxide- and hydrogen-containing treatment gas for heat treating metallic material comprises catalyst retort and device for heating partial regions of retort

Also Published As

Publication number Publication date
WO2005035799A1 (en) 2005-04-21
DE502004010812D1 (en) 2010-04-08
EP1673483B1 (en) 2010-02-24
PL1673483T3 (en) 2010-12-31
ES2341861T3 (en) 2010-06-29
DE10347312B3 (en) 2005-04-14
ATE458837T1 (en) 2010-03-15
EP1673483A1 (en) 2006-06-28

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