FR2525751B1 - - Google Patents
Info
- Publication number
- FR2525751B1 FR2525751B1 FR8207224A FR8207224A FR2525751B1 FR 2525751 B1 FR2525751 B1 FR 2525751B1 FR 8207224 A FR8207224 A FR 8207224A FR 8207224 A FR8207224 A FR 8207224A FR 2525751 B1 FR2525751 B1 FR 2525751B1
- Authority
- FR
- France
- Prior art keywords
- tunnel
- enclosure
- parts
- hardening
- rotary hearth
- 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
- 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
- F27B9/16—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 circular or arcuate path
-
- 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
-
- 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
- F27B9/04—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
- F27B9/042—Vacuum furnaces
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Tunnel Furnaces (AREA)
- Furnace Details (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
1. A rotary hearth furnace for thermic, thermochemical or electrothermic treatment of metal parts in a diluted atmosphere characterized in that it comprises : - a sealed metal enclosure (1), which may include a double wall, with an interposed cooling layer, this enclosure (1) comprising a side wall (2) preferably having a circular horizontal section, a cover (3) and a bottom (4) - means for creating, within the enclosure, an atmosphere for treatment under reduced pressure ; - a circular rolling path provided inside the enclosure on said bottom, in a peripheral region substantially adjacent the cylindrical wall ; - an annular tunnel (12) made of a heat isolating material, situated above the rolling track, this tunnel being open on its lower surface opposite the rolling track, this tunnel including means (13) for thermic, thermochemical or electrothermic treatment ; - a rotary hearth (22) consisting of a ring made of a heat isolating material, this hearth being movable on the rolling track and arranged so as to close the aperture of the lower part of the tunnel and thus provide continuity of the thermic isolation of the tunnel (12) as far as its lower surface is concerned ; - means for rotating the rotary hearth (22) by a motor (24) preferably lodged outside the enclosure ; - elements for supporting the parts (S) evenly distributed on the rotary hearth (22) ; - a hardening cell, comprising, on the one hand, a chamber forming a lock (6), also serving for charging and discharging the parts to be treated, this chamber being mounted against the side wall (2), inside the enclosure and communicating with the inner volume of the tunnel (12) by a first door and, if need be, a movable separating wall, and with the outside by a second door so as to allow the introduction and discharge of the parts to be treated inside the tunnel, and, on the other hand, a hardening a hardening vat (9) lodged below said chamber (6), this hardening cell comprising handling means (10) for depositing the parts on or taking them away from the rotary hearth, and for plunging them, at the end of treatment, into the hardening vat (9).
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8207224A FR2525751A1 (en) | 1982-04-27 | 1982-04-27 | SOFT ROTATING OVEN FOR THE THERMAL, THERMO-CHEMICAL OR ELECTROTHERMIC TREATMENT OF METALS UNDER RAREFILE ATMOSPHERE |
EP83400814A EP0093060B1 (en) | 1982-04-27 | 1983-04-25 | Rotary hearth furnace for thermic, thermochemical or electrothermic treatment of metals in a diluted atmosphere |
AT83400814T ATE21967T1 (en) | 1982-04-27 | 1983-04-25 | ROTARY FURNACES FOR THERMAL, THERMOCHEMICAL OR ELECTROTHERMAL TREATMENT OF METALS IN DILUTED ATMOSPHERE. |
DE8383400814T DE3365808D1 (en) | 1982-04-27 | 1983-04-25 | Rotary hearth furnace for thermic, thermochemical or electrothermic treatment of metals in a diluted atmosphere |
FR8709674A FR2617953B2 (en) | 1982-04-27 | 1987-07-08 | ROTATING SOLE FOR THERMAL, THERMOCHEMICAL OR ELECTROTHERMAL TREATMENT OF METALS UNDER RAREFIED OR CONTROLLED ATMOSPHERE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8207224A FR2525751A1 (en) | 1982-04-27 | 1982-04-27 | SOFT ROTATING OVEN FOR THE THERMAL, THERMO-CHEMICAL OR ELECTROTHERMIC TREATMENT OF METALS UNDER RAREFILE ATMOSPHERE |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2525751A1 FR2525751A1 (en) | 1983-10-28 |
FR2525751B1 true FR2525751B1 (en) | 1984-08-17 |
Family
ID=9273437
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8207224A Granted FR2525751A1 (en) | 1982-04-27 | 1982-04-27 | SOFT ROTATING OVEN FOR THE THERMAL, THERMO-CHEMICAL OR ELECTROTHERMIC TREATMENT OF METALS UNDER RAREFILE ATMOSPHERE |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0093060B1 (en) |
AT (1) | ATE21967T1 (en) |
DE (1) | DE3365808D1 (en) |
FR (1) | FR2525751A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4634375A (en) * | 1985-03-11 | 1987-01-06 | Hailey Robert W | Heating and handling system for metal consolidation process |
SE452359C (en) * | 1985-04-30 | 1994-04-11 | Kvaerner Generator Ab | Device for controlling the heat transfer rate of a CFB boiler |
DE102007048041A1 (en) * | 2007-10-05 | 2009-04-09 | Loi Thermprocess Gmbh | Rotary hearth furnace |
DE102008000056A1 (en) * | 2008-01-14 | 2009-07-23 | Loi Thermprocess Gmbh | Apparatus and method for loading and unloading a heat treatment furnace |
DE102008020449A1 (en) * | 2008-04-01 | 2009-10-15 | Manfred Husslein | Industrial furnace and method for operating an industrial furnace |
CN101644532B (en) * | 2009-06-26 | 2011-05-04 | 中冶长天国际工程有限责任公司 | Rotary kiln head revolving door |
CN104864721B (en) * | 2014-10-17 | 2017-05-31 | 安阳强基精密制造产业园股份有限公司 | Industrial Stoves |
CN110514017B (en) * | 2019-08-28 | 2024-05-17 | 大同新成新材料股份有限公司 | Anti-oxidation coating heat treatment equipment and method for carbon-carbon composite material |
CN112985052A (en) * | 2021-04-09 | 2021-06-18 | 江西科技学院 | Tunnel type continuous sintering furnace and sintering method thereof |
CN113549974B (en) * | 2021-09-22 | 2021-12-07 | 南通铭朗建筑机械有限公司 | Local oxidation coating treatment device for machining of building machinery parts |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1321463A (en) * | 1962-02-05 | 1963-03-22 | Heurtey Sa | Furnace for reheating and heat treatment of metal products and in particular ingots |
FR1483242A (en) * | 1966-06-13 | 1967-06-02 | Toyo Kogyo Company Ltd | Heat treatment furnace |
US3718324A (en) * | 1971-11-12 | 1973-02-27 | Hayes Inc C I | Vacuum furnace and work cart for use therein |
GB2026663B (en) * | 1978-07-26 | 1982-09-02 | Hayes Inc C | Continuous heat treating vacuum furnace |
-
1982
- 1982-04-27 FR FR8207224A patent/FR2525751A1/en active Granted
-
1983
- 1983-04-25 AT AT83400814T patent/ATE21967T1/en not_active IP Right Cessation
- 1983-04-25 EP EP83400814A patent/EP0093060B1/en not_active Expired
- 1983-04-25 DE DE8383400814T patent/DE3365808D1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE3365808D1 (en) | 1986-10-09 |
ATE21967T1 (en) | 1986-09-15 |
EP0093060B1 (en) | 1986-09-03 |
EP0093060A1 (en) | 1983-11-02 |
FR2525751A1 (en) | 1983-10-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |