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WO2003085396A3 - Device and method for controlling the composition of a gaseous atmosphere - Google Patents

Device and method for controlling the composition of a gaseous atmosphere Download PDF

Info

Publication number
WO2003085396A3
WO2003085396A3 PCT/EP2003/003640 EP0303640W WO03085396A3 WO 2003085396 A3 WO2003085396 A3 WO 2003085396A3 EP 0303640 W EP0303640 W EP 0303640W WO 03085396 A3 WO03085396 A3 WO 03085396A3
Authority
WO
WIPO (PCT)
Prior art keywords
gas atmosphere
oxygen content
chamber
composition
controlling
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.)
Ceased
Application number
PCT/EP2003/003640
Other languages
German (de)
French (fr)
Other versions
WO2003085396A2 (en
Inventor
Thomas Mahlo
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
Application filed by Linde GmbH filed Critical Linde GmbH
Priority to EP03724977A priority Critical patent/EP1493026A2/en
Priority to AU2003227577A priority patent/AU2003227577A1/en
Publication of WO2003085396A2 publication Critical patent/WO2003085396A2/en
Publication of WO2003085396A3 publication Critical patent/WO2003085396A3/en
Anticipated expiration legal-status Critical
Ceased 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
    • C21D1/76—Adjusting the composition of the atmosphere
    • 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
    • F27D21/00—Arrangement of monitoring devices; Arrangement of safety devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0011—Sample conditioning
    • 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
    • F27D19/00—Arrangements of controlling devices
    • F27D2019/0006—Monitoring the characteristics (composition, quantities, temperature, pressure) of at least one of the gases of the kiln atmosphere and using it as a controlling value

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Medicinal Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Food Science & Technology (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)

Abstract

The invention relates to a device and a method for monitoring the oxygen content of a gaseous atmosphere in a chamber, surrounded by an oxygen-containing gas. According to the invention, a bypass connected to the chamber is provided, which extracts an aliquot of the gas atmosphere and which has means for determining a parameter which permits inferences about the oxygen content of the gas atmosphere to be drawn. The parameter which permits inferences to be drawn about the oxygen content of the gas atmosphere is preferably determined by means of a lambda probe. The invention further relates to a device and a method for controlling the oxygen content of a gas atmosphere in a chamber, which is surrounded by an oxygen-containing gas. According to the invention, the composition of the gas atmosphere within the chamber is regulated such that the variation in oxygen content of the gas atmosphere is essentially zero.
PCT/EP2003/003640 2002-04-10 2003-04-08 Device and method for controlling the composition of a gaseous atmosphere Ceased WO2003085396A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP03724977A EP1493026A2 (en) 2002-04-10 2003-04-08 Device and method for controlling the composition of a gaseous atmosphere
AU2003227577A AU2003227577A1 (en) 2002-04-10 2003-04-08 Device and method for controlling the composition of a gaseous atmosphere

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10215857.6 2002-04-10
DE2002115857 DE10215857A1 (en) 2002-04-10 2002-04-10 Device and method for controlling the composition of a gas atmosphere

Publications (2)

Publication Number Publication Date
WO2003085396A2 WO2003085396A2 (en) 2003-10-16
WO2003085396A3 true WO2003085396A3 (en) 2004-03-25

Family

ID=28458697

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/003640 Ceased WO2003085396A2 (en) 2002-04-10 2003-04-08 Device and method for controlling the composition of a gaseous atmosphere

Country Status (4)

Country Link
EP (1) EP1493026A2 (en)
AU (1) AU2003227577A1 (en)
DE (1) DE10215857A1 (en)
WO (1) WO2003085396A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11443447B2 (en) 2020-04-17 2022-09-13 Samsung Electronics Co., Ltd. Three-dimensional camera system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2841626A1 (en) * 1978-09-25 1980-04-03 Bbc Brown Boveri & Cie Soot removal from furnaces used for fully automatic gas carburising - where limited amt. of air is fed into furnace for slow oxidn. of soot deposited on furnace walls
US4950334A (en) * 1986-08-12 1990-08-21 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Gas carburizing method and apparatus
DE19736514C1 (en) * 1997-08-22 1998-09-24 Messer Griesheim Gmbh Combined oxidation and heat treatment of ferrous metal parts
DE19738653A1 (en) * 1997-09-04 1999-03-11 Messer Griesheim Gmbh Method and device for heat treating parts
US5997286A (en) * 1997-09-11 1999-12-07 Ford Motor Company Thermal treating apparatus and process
DE19840778A1 (en) * 1998-09-07 2000-03-09 Messer Griesheim Gmbh Method and device for cleaning metal surfaces

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2841626A1 (en) * 1978-09-25 1980-04-03 Bbc Brown Boveri & Cie Soot removal from furnaces used for fully automatic gas carburising - where limited amt. of air is fed into furnace for slow oxidn. of soot deposited on furnace walls
US4950334A (en) * 1986-08-12 1990-08-21 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Gas carburizing method and apparatus
DE19736514C1 (en) * 1997-08-22 1998-09-24 Messer Griesheim Gmbh Combined oxidation and heat treatment of ferrous metal parts
DE19738653A1 (en) * 1997-09-04 1999-03-11 Messer Griesheim Gmbh Method and device for heat treating parts
US5997286A (en) * 1997-09-11 1999-12-07 Ford Motor Company Thermal treating apparatus and process
DE19840778A1 (en) * 1998-09-07 2000-03-09 Messer Griesheim Gmbh Method and device for cleaning metal surfaces

Also Published As

Publication number Publication date
AU2003227577A8 (en) 2003-10-20
AU2003227577A1 (en) 2003-10-20
WO2003085396A2 (en) 2003-10-16
EP1493026A2 (en) 2005-01-05
DE10215857A1 (en) 2003-10-23

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