CA2341152A1 - Method for heat-treating metallic workpieces - Google Patents

Method for heat-treating metallic workpieces Download PDF

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Publication number
CA2341152A1
CA2341152A1 CA002341152A CA2341152A CA2341152A1 CA 2341152 A1 CA2341152 A1 CA 2341152A1 CA 002341152 A CA002341152 A CA 002341152A CA 2341152 A CA2341152 A CA 2341152A CA 2341152 A1 CA2341152 A1 CA 2341152A1
Authority
CA
Canada
Prior art keywords
vacuum furnace
fan
heat
current motor
minimum pressure
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
CA002341152A
Other languages
French (fr)
Other versions
CA2341152C (en
Inventor
Karl-Heinz Lemken
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.)
Ipsen International GmbH
Original Assignee
Ipsen International 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 to EP99118920A priority Critical patent/EP1088901B1/en
Priority to AT99118920T priority patent/ATE225862T1/en
Priority to DE59903032T priority patent/DE59903032D1/en
Priority to ES99118920T priority patent/ES2184376T3/en
Priority to US09/653,993 priority patent/US6428742B1/en
Application filed by Ipsen International GmbH filed Critical Ipsen International GmbH
Priority to CA002341152A priority patent/CA2341152C/en
Priority to JP2001096006A priority patent/JP5178975B2/en
Priority to CN01112301.XA priority patent/CN1227378C/en
Publication of CA2341152A1 publication Critical patent/CA2341152A1/en
Application granted granted Critical
Publication of CA2341152C publication Critical patent/CA2341152C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • C21D1/767—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
    • 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
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • 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
    • C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum

Abstract

A method for heat-treating metallic workpieces, in which a flow of cooling gas is generated in a vacuum furnace by a fan in order to quench the workpieces, with the fan being driven by a rotary current motor that is operated with a predetermined supply voltage above a minimum pressure in the vacuum furnace which is determined with regard to the motor power of the rotary current motor. In order to additionally develop this method such that a simple and inexpensive improvement of the quenching effect is achieved, the fan is started at a pressure in the vacuum furnace which is lower than the minimum pressure, with the rotary current motor being operated with a second, lower supply voltage until the minimum pressure in the vacuum furnace is reached.
CA002341152A 1999-09-24 2001-03-21 Method for heat-treating metallic workpieces Expired - Fee Related CA2341152C (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE59903032T DE59903032D1 (en) 1999-09-24 1999-09-24 Process for the heat treatment of metallic workpieces
ES99118920T ES2184376T3 (en) 1999-09-24 1999-09-24 PROCEDURE FOR THE THERMAL TREATMENT OF METAL WORK PIECES.
EP99118920A EP1088901B1 (en) 1999-09-24 1999-09-24 Process for the thermal treatment of metallic workpieces
AT99118920T ATE225862T1 (en) 1999-09-24 1999-09-24 METHOD FOR HEAT TREATING METALLIC WORKPIECES
US09/653,993 US6428742B1 (en) 1999-09-24 2000-09-01 Method for heat-treating metallic workpieces
CA002341152A CA2341152C (en) 1999-09-24 2001-03-21 Method for heat-treating metallic workpieces
JP2001096006A JP5178975B2 (en) 1999-09-24 2001-03-29 Heat treatment method for metal workpieces
CN01112301.XA CN1227378C (en) 1999-09-24 2001-04-02 Heat treating method for metal workpiece

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP99118920A EP1088901B1 (en) 1999-09-24 1999-09-24 Process for the thermal treatment of metallic workpieces
CA002341152A CA2341152C (en) 1999-09-24 2001-03-21 Method for heat-treating metallic workpieces
JP2001096006A JP5178975B2 (en) 1999-09-24 2001-03-29 Heat treatment method for metal workpieces
CN01112301.XA CN1227378C (en) 1999-09-24 2001-04-02 Heat treating method for metal workpiece

Publications (2)

Publication Number Publication Date
CA2341152A1 true CA2341152A1 (en) 2002-09-21
CA2341152C CA2341152C (en) 2009-09-01

Family

ID=27427686

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002341152A Expired - Fee Related CA2341152C (en) 1999-09-24 2001-03-21 Method for heat-treating metallic workpieces

Country Status (8)

Country Link
US (1) US6428742B1 (en)
EP (1) EP1088901B1 (en)
JP (1) JP5178975B2 (en)
CN (1) CN1227378C (en)
AT (1) ATE225862T1 (en)
CA (1) CA2341152C (en)
DE (1) DE59903032D1 (en)
ES (1) ES2184376T3 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2844809B1 (en) * 2002-09-20 2007-06-29 Air Liquide RAPID COOLING PROCESS OF PARTS BY CONVECTIVE AND RADIATIVE TRANSFER
US7189352B2 (en) 2003-01-14 2007-03-13 Medtronic, Inc. Extracorporeal blood circuit priming system and method
US7335334B2 (en) * 2003-01-14 2008-02-26 Medtronic, Inc. Active air removal from an extracorporeal blood circuit
US7201870B2 (en) * 2003-01-14 2007-04-10 Medtronic, Inc. Active air removal system operating modes of an extracorporeal blood circuit
DE102005017906B4 (en) * 2005-04-18 2008-06-05 Ipsen International Gmbh Heat treatment of metallic workpieces
JP5407281B2 (en) * 2008-11-04 2014-02-05 トヨタ自動車株式会社 Heat treatment method
DE102009000201B4 (en) 2009-01-14 2018-06-21 Robert Bosch Gmbh Charging rack and quenching device with charging rack
CN101935745B (en) * 2010-08-05 2011-11-30 山西鑫博瑞科技有限公司 Heat treatment device and heat treatment method for coal cutting teeth
FR3001229B1 (en) * 2013-01-23 2015-10-30 Ecm Technologies GAS TUMBLE CELL
CN107557553A (en) * 2017-08-07 2018-01-09 安徽盛美金属科技有限公司 A kind of metal sheet annealing device
US11053560B2 (en) 2018-08-24 2021-07-06 William R. Jones High pressure rapid gas quenching vacuum furnace utilizing an isolation transformer in the blower motor power system to eliminate ground faults from electrical gas ionization

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE649125C (en) * 1937-08-16 Bbc Brown Boveri & Cie Method for the uninterrupted asynchronous starting of alternating current machines
DE200995C (en) * 1907-06-13
US4141539A (en) * 1977-11-03 1979-02-27 Alco Standard Corporation Heat treating furnace with load control for fan motor
JPS6126722A (en) * 1984-07-18 1986-02-06 Ishikawajima Harima Heavy Ind Co Ltd Impact air-cooled vacuum heat-treating furnace
JPS6160819A (en) * 1984-08-29 1986-03-28 Shimadzu Corp Cooling method for hardening
DE3736501C1 (en) * 1987-10-28 1988-06-09 Degussa Process for the heat treatment of metallic workpieces
JPH0433589A (en) * 1990-05-28 1992-02-04 Fuji Electric Co Ltd Motor speed control method
JPH06189586A (en) * 1992-10-15 1994-07-08 Oki Electric Ind Co Ltd Control method for cooling fan and circuit used for it
US5478985A (en) * 1993-09-20 1995-12-26 Surface Combustion, Inc. Heat treat furnace with multi-bar high convective gas quench
AT405190B (en) * 1996-03-29 1999-06-25 Ald Aichelin Ges M B H METHOD AND DEVICE FOR HEAT TREATING METAL WORKPIECES
JPH10183236A (en) * 1996-12-25 1998-07-14 Shimazu Mekutemu Kk Vacuum heat treatment furnace
JP4131588B2 (en) * 1998-07-29 2008-08-13 三洋電機株式会社 DC motor control device

Also Published As

Publication number Publication date
ES2184376T3 (en) 2003-04-01
EP1088901B1 (en) 2002-10-09
JP5178975B2 (en) 2013-04-10
CN1227378C (en) 2005-11-16
ATE225862T1 (en) 2002-10-15
CN1377978A (en) 2002-11-06
EP1088901A1 (en) 2001-04-04
US6428742B1 (en) 2002-08-06
CA2341152C (en) 2009-09-01
DE59903032D1 (en) 2002-11-14
JP2002294333A (en) 2002-10-09

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Effective date: 20160321