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
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 tunnel furnace
- 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 tunnel furnace 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, removable covers
- F27D1/1858—Doors
- F27D2001/1875—Hanging doors and walls
- F27D2001/1883—Hanging curtains
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.
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 |
---|---|
ES8403163A1 true ES8403163A1 (en) | 1984-03-01 |
ES515780A0 ES515780A0 (en) | 1984-03-01 |
Family
ID=26280755
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES515780A Granted ES515780A0 (en) | 1981-09-19 | 1982-09-17 | A METHOD OF OPERATING A CONTINUOUS HEAT TREATMENT OVEN. |
ES526964A Granted ES526964A0 (en) | 1981-09-19 | 1983-11-02 | A METHOD OF OPERATING A CONTINUOUS HEAT TREATMENT OVEN. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES526964A Granted ES526964A0 (en) | 1981-09-19 | 1983-11-02 | A METHOD OF OPERATING A CONTINUOUS HEAT TREATMENT OVEN. |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0075438B1 (en) |
JP (1) | JPH0617501B2 (en) |
AU (1) | AU556896B2 (en) |
DE (1) | DE3277843D1 (en) |
ES (2) | ES515780A0 (en) |
GB (1) | GB2108156B (en) |
Families Citing this family (28)
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 |
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 |
IT1229078B (en) * | 1988-03-16 | 1991-07-18 | Air Liquide | METAL ARTICLES TREATMENT PROCESS AND DEVICE FOR TREATMENT. |
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 |
US7955450B2 (en) | 2006-04-04 | 2011-06-07 | Linde Aktiengesellschaft | Method for heat treatment |
DE102006015739A1 (en) * | 2006-04-04 | 2007-10-11 | Linde Ag | Process for heat treatment |
PL1842931T3 (en) * | 2006-04-04 | 2014-07-31 | Linde Ag | Method for heat treatment |
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 |
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 |
Family Cites Families (12)
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 |
-
1982
- 1982-09-15 GB GB08226302A patent/GB2108156B/en not_active Expired
- 1982-09-15 DE DE8282304867T patent/DE3277843D1/en not_active Expired
- 1982-09-15 EP EP19820304867 patent/EP0075438B1/en not_active Expired
- 1982-09-17 ES ES515780A patent/ES515780A0/en active Granted
- 1982-09-17 AU AU88508/82A patent/AU556896B2/en not_active Ceased
-
1983
- 1983-11-02 ES ES526964A patent/ES526964A0/en active Granted
-
1988
- 1988-07-12 JP JP63173624A patent/JPH0617501B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB2108156A (en) | 1983-05-11 |
ES8407573A1 (en) | 1984-09-16 |
EP0075438A1 (en) | 1983-03-30 |
JPH0617501B2 (en) | 1994-03-09 |
GB2108156B (en) | 1986-01-15 |
AU556896B2 (en) | 1986-11-27 |
JPH01127618A (en) | 1989-05-19 |
DE3277843D1 (en) | 1988-01-28 |
ES515780A0 (en) | 1984-03-01 |
ES526964A0 (en) | 1984-09-16 |
AU8850882A (en) | 1983-03-31 |
EP0075438B1 (en) | 1987-12-16 |
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