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ES8403163A1 - Heat treatment of metals. - Google Patents

Heat treatment of metals.

Info

Publication number
ES8403163A1
ES8403163A1 ES515780A ES515780A ES8403163A1 ES 8403163 A1 ES8403163 A1 ES 8403163A1 ES 515780 A ES515780 A ES 515780A ES 515780 A ES515780 A ES 515780A ES 8403163 A1 ES8403163 A1 ES 8403163A1
Authority
ES
Spain
Prior art keywords
furnace
air
flow
ingress
exit
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.)
Expired
Application number
ES515780A
Other languages
Spanish (es)
Other versions
ES515780A0 (en
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.)
BOC Group Ltd
Original Assignee
BOC Group Ltd
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=26280755&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES8403163(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by BOC Group Ltd filed Critical BOC Group Ltd
Publication of ES515780A0 publication Critical patent/ES515780A0/en
Publication of ES8403163A1 publication Critical patent/ES8403163A1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0073—Seals
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/561—Continuous furnaces for strip or wire with a controlled atmosphere or vacuum
    • 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
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor
    • F27B9/243—Endless-strand conveyor
    • 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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/18—Door frames; Doors, lids or removable covers
    • F27D1/1858—Doors
    • F27D2001/1875—Hanging doors and walls
    • F27D2001/1883—Hanging curtains

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Details (AREA)

Abstract

Workpieces to be heat treated (for example to be annealed or sintered) are passed through a continuous furnace having in sequence, an entrance, a thermal treatment region, a cooling region and an exit. Ingress of air into the furnace through the entrance and exit is prevented. Typically the cooling region is provided at its exit end with one or more curtains or partitions providing a physical obstruction to the flow of air into the furnace and a flow of non-reactive gas (eg nitrogen) also to inhibit ingress of air. The curtains or partitions may form one or more chambers with the furnace and the nitrogen supplied to such chamber or chambers, Non-reactive gas and reducing gas (eg hydrogen) are introduced into the furnace to provide substantially non-oxidising conditions therein. The flow regimen is such that atmosphere or different compositions are created in the thermal treatment and cooling regions, By severely limiting ingress of air into the furnace and creating eg differential hydrogen concentrations along the furnace overall consumptions of gas may be considerably reduced.
ES515780A 1981-09-19 1982-09-17 Heat treatment of metals. Expired ES8403163A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8128392 1981-09-19
GB8217338 1982-06-15

Publications (2)

Publication Number Publication Date
ES515780A0 ES515780A0 (en) 1984-03-01
ES8403163A1 true ES8403163A1 (en) 1984-03-01

Family

ID=26280755

Family Applications (2)

Application Number Title Priority Date Filing Date
ES515780A Expired ES8403163A1 (en) 1981-09-19 1982-09-17 Heat treatment of metals.
ES526964A Expired ES8407573A1 (en) 1981-09-19 1983-11-02 Heat treatment of metals.

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES526964A Expired ES8407573A1 (en) 1981-09-19 1983-11-02 Heat treatment of metals.

Country Status (6)

Country Link
EP (1) EP0075438B1 (en)
JP (1) JPH0617501B2 (en)
AU (1) AU556896B2 (en)
DE (1) DE3277843D1 (en)
ES (2) ES8403163A1 (en)
GB (1) GB2108156B (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT395321B (en) * 1983-07-05 1992-11-25 Ebner Ind Ofenbau METHOD FOR COOLING CHARGES IN DISCONTINUOUSLY WORKING INDUSTRIAL OVENS, ESPECIALLY STEEL WIRE OR TAPE BANDS IN DOME GLUES
FR2583064B1 (en) * 1985-06-05 1987-08-14 Air Liquide HEAT TREATMENT PROCESS, HOOD FOR CARRYING OUT SAID METHOD AND USE THEREOF IN HEAT TREATMENT OVENS
DE3733884A1 (en) * 1987-10-07 1989-04-27 Linde Ag METHOD FOR GLOWING METAL PARTS IN CONTINUOUS OVENS
IT1229078B (en) * 1988-03-16 1991-07-18 Air Liquide METAL ARTICLES TREATMENT PROCESS AND DEVICE FOR TREATMENT.
FR2628752B1 (en) * 1988-03-16 1993-01-15 Air Liquide METHOD AND DEVICE FOR THE TREATMENT OF ANNEALING OF METAL STRIPS IN VERTICAL OVEN
FR2628753B1 (en) * 1988-03-16 1993-07-23 Air Liquide METHOD AND APPARATUS FOR TREATING ANNEALING OF METAL ARTICLES IN HORIZONTAL OVEN
DE3809516A1 (en) * 1988-03-22 1989-10-05 Messer Griesheim Gmbh Method for supplying inert gas and reaction gas to a vertical or horizontal annealing unit
DE3828134A1 (en) * 1988-08-18 1990-02-22 Linde Ag METHOD FOR THE HEAT TREATMENT OF WORKPIECES
DE3926417A1 (en) * 1989-01-17 1990-07-19 Linde Ag METHOD FOR GLOWING METAL PARTS UNDER HYDROGEN PROTECTIVE GAS IN A CONTINUOUS OVEN
JP3002518B2 (en) * 1990-10-17 2000-01-24 株式会社日立製作所 Liquid crystal display
DE4104982A1 (en) * 1991-02-19 1992-08-20 Linde Ag Continuous heating, inert gas-filled furnace - has extractor hoods at, and above, the furnace entry and exit
IL119434A (en) * 1995-11-27 2000-01-31 Boc Group Inc Furnace
FR2746112B1 (en) * 1996-03-13 1998-06-05 METHOD OF CONTINUOUS HEAT TREATMENT OF METAL STRIPS IN ATMOSPHERES OF DIFFERENT NATURE
FR2801953B1 (en) * 1999-12-06 2002-05-10 Snecma SEALING BOX FOR A CONTINUOUS PROCESSING ENCLOSURE OF A THIN STRIP PRODUCT, PARTICULARLY FOR A CONTINUOUS CARBONIZATION OVEN OF FIBROUS SUBSTRATE
DE10050673C1 (en) * 2000-10-04 2002-04-18 Kohnle W Waermebehandlung Heat treatment, e.g. annealing, of workpieces in conveyor furnace under inert and reductant gases continues in inert atmosphere on reaching upper limiting value of oxygen partial pressure
LU90721B1 (en) * 2001-01-25 2002-07-26 Circuit Foil Luxembourg Trading Sarl Method for producing metal foams and furnace for producing same
JP2003003211A (en) * 2001-06-19 2003-01-08 Kanto Yakin Kogyo Co Ltd Continuous heat-treatment method for metal under argon atmosphere
US7458991B2 (en) 2002-02-08 2008-12-02 Howmedica Osteonics Corp. Porous metallic scaffold for tissue ingrowth
BE1015109A3 (en) * 2002-09-13 2004-10-05 Drever Internat S A Process traitemant thermal metal strip.
DE10347312B3 (en) * 2003-10-08 2005-04-14 Air Liquide Deutschland Gmbh Process for the heat treatment of iron materials
EP1842931B1 (en) * 2006-04-04 2014-02-19 Linde AG Method for heat treatment
DE102006015739A1 (en) * 2006-04-04 2007-10-11 Linde Ag Process for heat treatment
BRPI0702253B1 (en) 2006-04-04 2020-02-04 Linde Ag heat treatment process of parts in a heat treatment oven
FR2903121B1 (en) * 2006-06-30 2008-09-19 D M S Sa CONTINUOUS THERMAL TREATMENT SYSTEM FOR BRILLIANT RECOVERY OF A STAINLESS STEEL STRIP
CN100465302C (en) * 2006-08-17 2009-03-04 武汉钢铁(集团)公司 Three-section type atmosphere controlled heat treatment furnace
EP3372935A1 (en) * 2017-03-08 2018-09-12 Paul Wurth S.A. Conveying device for bulk material
FR3070976B1 (en) * 2017-09-14 2020-02-28 Adam Pyrometrie PORTABLE ELECTRIC GLASS OVEN FOR COLLECTING HIGH GLASS OBJECTS, PROVIDED WITH A DOOR ACCORDING TO A KINEMATIC MOVEMENT
CN113136482B (en) * 2020-01-19 2024-11-26 天津阿瑞斯工业炉有限公司 Single vacuum roller bottom protective atmosphere heat treatment equipment and process thereof
CN112029978A (en) * 2020-08-11 2020-12-04 江苏常宝普莱森钢管有限公司 Proportioning method for controlling oxidation protective atmosphere of inner surface of heat treatment furnace
CN118421902B (en) * 2024-05-08 2025-01-21 浙江众凌科技有限公司 A horizontal continuous annealing furnace for annealing Invar alloy foil
CN118417649B (en) * 2024-05-22 2024-11-08 江苏富捷刀业有限公司 Nitriding furnace and method for manufacturing wear-resistant brazing by using nitriding furnace

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE617319C (en) * 1931-05-02 1935-08-16 Benno Schilde Maschb Akt Ges Procedure and device for bright annealing
GB429940A (en) * 1933-12-08 1935-06-11 John Lindon Pearson Improvements in or relating to annealing processes and furnaces
GB515121A (en) * 1937-05-24 1939-11-27 Wilhelm Doderer Apparatus for the treatment of materials with gases under pressure
FR55831E (en) * 1943-02-02 1952-09-08 Improvements in methods and devices for coating metal objects with protective layers of a different metal
DE861569C (en) * 1944-02-03 1953-01-05 Accumulatoren Fabrik Ag Method and device for bright annealing and sintering, in particular metals
GB695624A (en) * 1949-10-05 1953-08-12 Birlec Ltd Improvements in, or relating to, continuous furnaces
GB794140A (en) * 1955-01-17 1958-04-30 Metal Rolling And Tube Company Improvements relating to the heat-treatment of metal articles
US3467366A (en) * 1967-10-02 1969-09-16 Hayes Inc C I Furnace construction having atmosphere curtain
US3738025A (en) * 1972-07-31 1973-06-12 Hanson Ind Inc Ski boot having variable stiffness
US3950192A (en) * 1974-10-30 1976-04-13 Monsanto Company Continuous carburizing method
JPS5238105U (en) * 1975-09-10 1977-03-17
JPS53125210A (en) * 1977-04-07 1978-11-01 Kobe Steel Ltd Preparation of steel material having small amount of scale

Also Published As

Publication number Publication date
EP0075438A1 (en) 1983-03-30
ES526964A0 (en) 1984-09-16
GB2108156B (en) 1986-01-15
ES515780A0 (en) 1984-03-01
AU8850882A (en) 1983-03-31
GB2108156A (en) 1983-05-11
AU556896B2 (en) 1986-11-27
EP0075438B1 (en) 1987-12-16
DE3277843D1 (en) 1988-01-28
JPH0617501B2 (en) 1994-03-09
JPH01127618A (en) 1989-05-19
ES8407573A1 (en) 1984-09-16

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