EP1233078A3 - Verfahren zum Abschrecken von metallischen Werkstücken - Google Patents

Verfahren zum Abschrecken von metallischen Werkstücken Download PDF

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Publication number
EP1233078A3
EP1233078A3 EP02003818A EP02003818A EP1233078A3 EP 1233078 A3 EP1233078 A3 EP 1233078A3 EP 02003818 A EP02003818 A EP 02003818A EP 02003818 A EP02003818 A EP 02003818A EP 1233078 A3 EP1233078 A3 EP 1233078A3
Authority
EP
European Patent Office
Prior art keywords
metal workpieces
quenching metal
quench gas
quenching
helium
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.)
Granted
Application number
EP02003818A
Other languages
English (en)
French (fr)
Other versions
EP1233078A2 (de
EP1233078B1 (de
Inventor
Uwe Neubauer
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.)
Linde GmbH
Original Assignee
Linde 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7674804&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1233078(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Linde GmbH filed Critical Linde GmbH
Publication of EP1233078A2 publication Critical patent/EP1233078A2/de
Publication of EP1233078A3 publication Critical patent/EP1233078A3/de
Application granted granted Critical
Publication of EP1233078B1 publication Critical patent/EP1233078B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C21D1/56—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
    • 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
    • C21D2241/00—Treatments in a special environment
    • C21D2241/01—Treatments in a special environment under pressure

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Furnace Details (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

Es wird ein Verfahren zum Abschrecken von metallischen Werkstücken in einem Ofenraum, insbesondere unter überatmosphärischem Druck, wobei als Abschreckgas(gemisch) ein Inertgas oder Inertgasgemisch, insbesondere Stickstoff, Argon und/oder Helium verwendet werden, nachdem das metallische Werkstück in einem evakuierten Ofenraum einem Wärmebehandlungsprozess unterworfen wurde, beschrieben.
Erfindungsgemäß wird vor dem Einleiten des Abschreckgas(gemisch)es in den Ofenraum dem noch evakuierten Ofenraum Wasserstoff zugeführt, wobei dem Ofenraum jedoch nur soviel Wasserstoff zugeführt wird, dass, abhängig von dem Abschreckdruck, der Gastemperatur am Ende des Abschreckprozesses und der Zusammensetzung des Abschreckgas(gemisch)es, eine Wasserstoff-Konzentration in dem Abschreckgas(gemisch) unterhalb der Explosionsgrenze erreicht wird.
EP02003818A 2001-02-20 2002-02-20 Verfahren zum Abschrecken von metallischen Werkstücken Expired - Lifetime EP1233078B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10108057A DE10108057A1 (de) 2001-02-20 2001-02-20 Verfahren zum Abschrecken von metallischen Werkstücken
DE10108057 2001-02-20

Publications (3)

Publication Number Publication Date
EP1233078A2 EP1233078A2 (de) 2002-08-21
EP1233078A3 true EP1233078A3 (de) 2003-11-26
EP1233078B1 EP1233078B1 (de) 2006-02-15

Family

ID=7674804

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02003818A Expired - Lifetime EP1233078B1 (de) 2001-02-20 2002-02-20 Verfahren zum Abschrecken von metallischen Werkstücken

Country Status (5)

Country Link
US (1) US6692593B2 (de)
EP (1) EP1233078B1 (de)
AT (1) ATE317918T1 (de)
DE (2) DE10108057A1 (de)
ES (1) ES2258572T3 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005045783A1 (de) * 2005-09-23 2007-03-29 Sistem Teknik Endustriyel Elektronik Sistemler Sanayi Ve Ticaret Ltd. Sirketi Einkammer-Vakuumofen mit Wasserstoffabschreckung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987003159A1 (en) * 1985-11-12 1987-05-21 Mg Industries, Inc. Method and apparatus for cooling induction heated material
US4867808A (en) * 1987-10-28 1989-09-19 Degussa Aktiengesellschaft Heat treating a metallic workpiece by quenching under cooling gas under above atmospheric pressure and specified circulation rate
EP0495151A1 (de) * 1991-01-15 1992-07-22 Linde Aktiengesellschaft Verfahren zur Wärmebehandlung in Vakuumöfen
US5362031A (en) * 1991-06-27 1994-11-08 Leybold Durfrrit Gmbh Method and apparatus for the automatic monitoring of operating safety and for controlling the progress of the process in a vacuum heat-treatment oven
EP0869189A1 (de) * 1997-03-11 1998-10-07 Linde Aktiengesellschaft Verfahren zur Gasabschreckung metallischer Werkstücke
EP0962538A2 (de) * 1998-06-02 1999-12-08 Linde Aktiengesellschaft Verfahren und Vorrichtung zur effektiven Abkühlung von Behandlungsgut
EP1211329A2 (de) * 2000-12-04 2002-06-05 Praxair Technology, Inc. Verfahren und Vorrichtung zum Hochdruckgasabschrecken in einem Schutzgasofen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58147514A (ja) * 1982-02-24 1983-09-02 Ishikawajima Harima Heavy Ind Co Ltd ガス冷却熱処理法
DE3819803C1 (de) * 1988-06-10 1989-12-14 Ulrich 5810 Witten De Wingens

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987003159A1 (en) * 1985-11-12 1987-05-21 Mg Industries, Inc. Method and apparatus for cooling induction heated material
US4867808A (en) * 1987-10-28 1989-09-19 Degussa Aktiengesellschaft Heat treating a metallic workpiece by quenching under cooling gas under above atmospheric pressure and specified circulation rate
US4867808B1 (de) * 1987-10-28 1994-02-22 Leybold Durferrit Gmbh
EP0495151A1 (de) * 1991-01-15 1992-07-22 Linde Aktiengesellschaft Verfahren zur Wärmebehandlung in Vakuumöfen
US5362031A (en) * 1991-06-27 1994-11-08 Leybold Durfrrit Gmbh Method and apparatus for the automatic monitoring of operating safety and for controlling the progress of the process in a vacuum heat-treatment oven
EP0869189A1 (de) * 1997-03-11 1998-10-07 Linde Aktiengesellschaft Verfahren zur Gasabschreckung metallischer Werkstücke
EP0962538A2 (de) * 1998-06-02 1999-12-08 Linde Aktiengesellschaft Verfahren und Vorrichtung zur effektiven Abkühlung von Behandlungsgut
EP1211329A2 (de) * 2000-12-04 2002-06-05 Praxair Technology, Inc. Verfahren und Vorrichtung zum Hochdruckgasabschrecken in einem Schutzgasofen

Also Published As

Publication number Publication date
DE50205811D1 (de) 2006-04-20
EP1233078A2 (de) 2002-08-21
DE10108057A1 (de) 2002-08-22
US20020121320A1 (en) 2002-09-05
ES2258572T3 (es) 2006-09-01
ATE317918T1 (de) 2006-03-15
US6692593B2 (en) 2004-02-17
EP1233078B1 (de) 2006-02-15

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