EP0208066B1 - Four de fusion à induction sous vide - Google Patents
Four de fusion à induction sous vide Download PDFInfo
- Publication number
- EP0208066B1 EP0208066B1 EP86104874A EP86104874A EP0208066B1 EP 0208066 B1 EP0208066 B1 EP 0208066B1 EP 86104874 A EP86104874 A EP 86104874A EP 86104874 A EP86104874 A EP 86104874A EP 0208066 B1 EP0208066 B1 EP 0208066B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- outer vessel
- vessel
- rim
- induction coil
- vacuum induction
- 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
- 230000006698 induction Effects 0.000 title claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 239000000155 melt Substances 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 239000011810 insulating material Substances 0.000 claims abstract description 3
- 238000000926 separation method Methods 0.000 claims abstract 4
- 239000011248 coating agent Substances 0.000 claims abstract 3
- 238000000576 coating method Methods 0.000 claims abstract 3
- 238000001816 cooling Methods 0.000 claims description 16
- 210000004907 gland Anatomy 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims 1
- 239000011707 mineral Substances 0.000 claims 1
- 239000000565 sealant Substances 0.000 claims 1
- 229920002994 synthetic fiber Polymers 0.000 claims 1
- 238000002844 melting Methods 0.000 description 18
- 230000008018 melting Effects 0.000 description 18
- 238000004519 manufacturing process Methods 0.000 description 3
- 210000004894 snout Anatomy 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000002792 vascular Effects 0.000 description 2
- WWTBZEKOSBFBEM-SPWPXUSOSA-N (2s)-2-[[2-benzyl-3-[hydroxy-[(1r)-2-phenyl-1-(phenylmethoxycarbonylamino)ethyl]phosphoryl]propanoyl]amino]-3-(1h-indol-3-yl)propanoic acid Chemical compound N([C@@H](CC=1C2=CC=CC=C2NC=1)C(=O)O)C(=O)C(CP(O)(=O)[C@H](CC=1C=CC=CC=1)NC(=O)OCC=1C=CC=CC=1)CC1=CC=CC=C1 WWTBZEKOSBFBEM-SPWPXUSOSA-N 0.000 description 1
- 229940126208 compound 22 Drugs 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/22—Furnaces without an endless core
- H05B6/24—Crucible furnaces
- H05B6/26—Crucible furnaces using vacuum or particular gas atmosphere
-
- 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
- F27B14/00—Crucible or pot furnaces
- F27B14/04—Crucible or pot furnaces adapted for treating the charge in vacuum or special atmosphere
-
- 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
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details specially adapted for crucible or pot furnaces
- F27B14/10—Crucibles
-
- 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
- F27B14/00—Crucible or pot furnaces
- F27B14/06—Crucible or pot furnaces heated electrically, e.g. induction crucible furnaces with or without any other source of heat
- F27B14/061—Induction furnaces
-
- 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
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details specially adapted for crucible or pot furnaces
- F27B14/10—Crucibles
- F27B14/12—Covers therefor
Definitions
- the invention relates to a vacuum induction furnace for the heating and treatment of metallic melts, consisting of a stationary part which, in addition to the supporting furnace frame, comprises the cooled induction coil arranged thereon and the magnetic yokes surrounding it, as well as a replaceable bearing in the furnace frame Transportable, dimensionally stable melting material container with a lid made of refractory material and a cover intended for the vacuum-tight closure of the container mouth, the latter including the cover with a spacing overlapping hood, which is tightly closed on a wreath equipped with sealing blades and encompassing the melting material container.
- a vacuum induction furnace of this type, from which the invention is based, is known from DE-AS-22 43 769.
- the melting vessel formed as a pan or crucible is covered with a gas-tight plastic jacket and inserted into the induction coil with a relatively large amount of play.
- the collar supporting the hood is attached in a gas-tight manner at the upper end of the melting material vessel.
- a cooling tube system which can be acted upon by gaseous coolant, in particular air, is embedded in the jacket of the melted material, which consists of a plurality of cooling tubes running along the melting material and distributed around the circumference and connected to one another, and which is primarily intended for the gas-tight Protect plastic sheath and the induction coil from overheating.
- the object of the invention is to improve a vacuum induction furnace of the type specified in the preamble of claim 1 with simple means and measures such that a simpler and cheaper production can be achieved, which also results in an improvement in the efficiency of the vacuum induction furnace and its functional reliability.
- the solution to this problem is characterized in that an outer vessel made of fireproof, non-magnetizable, heat-insulating material is arranged, which is only open at the top and comprises the melting material vessel with virtually no play, the outer vessel is surrounded by the cooled induction coil without play, the ring with an axial distance from it Induction coil is placed tightly on the outside of the mouth edge part of the outer vessel, and that the outer vessel has a gas-tight envelope.
- the outer vessel which is fixed to the frame, achieves such thermal insulation that the cooling tube system to be embedded in the jacket of the melting material vessel is no longer necessary, which results in a considerable reduction in production costs and also in operating costs.
- the gas-tight envelope of the outer vessel is arranged in such a way that there is no risk of damage to the gas-tight envelope when inserting or removing the melting material vessel.
- the gas tightness of the outer vessel can be achieved by a glaze added on the outside and possibly also on the inside.
- the outer vessel has a gas-tight envelope made of plastic.
- the outer vessel is lined with a heat-resistant layer of mineral fibers, in particular of micanite.
- this at least makes it impossible to adhere firmly to the melting vessel in the outer vessel.
- the drawing shows a vacuum induction furnace in longitudinal section.
- This vacuum induction furnace comprises a stationary part 1 and a transportable part 2.
- the latter consists of a melting material vessel 3 having annular cross-sections with a snout 4 and a lid 5 closing its mouth.
- the melting material vessel 3 including snout 4 and lid 5 are made of ceramic ramming mass.
- the melting material vessel 3 is tapered in its lower region towards its base 6.
- a inspection hole 8 is arranged in the cover 5.
- the melting material vessel 3 is stamped into an outer vessel 10 held on the furnace frame 9 virtually without play and detachably, which extends upwards extends under the snout 4 of the outer vessel 10.
- the pot-shaped outer vessel 10 also has circular cross sections, is also made of ceramic ramming paste and is supported with its base 11 on a frame plate 12.
- the bottoms 6 and 11 are each thicker than the side walls of the melting material vessel 3 and the outer vessel 10.
- the outer vessel 10 together with the bottom 11 has an inseparably attached, gas-tight sheath 13 made of plastic, which extends over its entire outer side and optionally the inner side, and is surrounded by an induction coil 14 with magnetic yokes 15 held on the frame, for example water-coolable, the induction coil 14 bears directly and without play on the outer vessel envelope 13.
- a collar 16 encompassing the vascular orifices 16 is tightly closed on the outer vessel 10 above the induction coil 14 and at an axial distance from the latter.
- the latter has a circumferential sealing cutting edge 17 on which a gas-tight hood 19 equipped with an annular seal 18 is supported.
- a circumferential stuffing box seal 20 of a known type is held thereon, the sealing means of which are applied in a sealing manner to the casing 13 of the outer vessel 10.
- the stuffing box seal 20 is arranged below the outer vessel mouth and at an axial distance therefrom.
- annular cooling device 21 which bears against the inside of the ring 16 is arranged within the ring 16 at a radial distance from the outer vessel 10.
- the annular space located above the gland seal 20 between the outer vessel and the cooling device 21 is filled with silicone potting compound 22.
- annular cooling device 23 made of austenitic steel, which is arranged at an axial distance from the ring 16 and comprises the outer vessel 10, is then arranged on the latter.
- a cooling device 24 of the same type comprises the area of the outer vessel 10 located below the induction coil.
- a cooling device 25 which is effective on the bottom 11 of the outer vessel 10 is arranged below the frame plate 12.
- gaseous coolant is supplied to the cooling devices.
- the outer vessel 10 has a lining 26 made of micanite.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Furnace Details (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Claims (8)
1. Four à induction sous vide pour le chauffage et le traitement de masses fondues métalliques, comportant une partie stationnaire, qui comprend, en plus du creuset de four porteur, la bobine d'inductance refroidie, placée sur celui-ci et les culasses d'aimant qui entourent celle-ci sur l'extérieur, ainsi qu'un récipient de matières à fondre indéformable, capable d'être transporté seul, positionné dans le creuset de four de manière à être remplaçable, avec un couvercle en matériau incombustible et une chape destinée à la fermeture étanche au vide de l'ouverture du récipient et recouvrant celle-ci et son couvercle en laissant un espace, chape qui s'appuie sur une couronne qui entoure le récipient de matières à fondre en la fermant hermétiquement et qui est équipée d'éléments d'étanchéité en forme de tranchants, caractérisé en ce qu'il est placé un récipient extérieur (10) en matériau calorifuge, incombustible, non magnétisable, fixé de manière fixe au creuset et n'étant ouvert que par le haut, qui entoure le récipient de matières à fondre (3) sans qu'il y ait de jeu, que le récipient extérieur (10) est entouré par la bobine d'inductance (14) refroidie sans qu'il y ait de jeu, que la couronne (16) est mise à l'extérieur (10) contre la partie marginale de l'ouverture du récipient extérieur (10) de manière à assurer une fermeture hermétique avec un écart axial par rapport à la bobine d'inductance (14) et que le récipient extérieur (10) présente une chemise (13) étanche au gaz.
2. Four à induction sous vide selon la revendication 1, caractérisé en ce que le récipient extérieur (10) est verni à l'extérieur et, le cas échéant, également à l'intérieur.
3. Four à induction sous vide selon la revendication 1, caractérisé en ce que le récipient extérieur (10) présente .une chemise (13) étanche au gaz en matière plastique.
4. Four à induction sous vide selon l'une des revendications précédentes, caractérisé en ce que le récipient extérieur (10) est revêtu d'une couche (26) à haute résistance à chaud en fibres minérales, en particulier en micanite.
5. Four à induction sous vide selon l'une des revendications précédentes, caractérisé en ce que le récipient extérieur (10) est verni à l'intérieur.
6. Four à induction sous vide selon l'une des revendications précédentes, la couronne étant étanchée par un presse-étoupe, caractérisé en ce que le presse-étoupe (20) fixé sur la couronne (16) est placé avec un écart axial par rapport à l'ouverture du récipient extérieur (10), que, de plus, un dispositif de refroidissement (21) en forme d'anneau entourant la partie marginale du récipient extérieur (10) est placé dans la couronne (16) au-dessus du presse-étoupe (20) et en plus que, en particulier, l'espace annulaire qui se trouve au-dessus du presse-étoupe (20) ainsi qu'entre le dispositif de refroidissement (21) et la partie marginale de l'ouverture du récipient extérieur (10) est rempli avec un matériau d'étanchéité, en particulier avec une masse de remplissage au silicone (22).
7. Four à induction sous vide selon l'une des revendications précédentes, caractérisé en ce qu'un dispositif de refroidissement (23) en matériau non magnétisable, en particulier en acier austénitique, posé contre le récipient extérieur et entourant celui-ci, est placé entre la bobine d'inductance (14) et la couronne (16) avec un écart axial par rapport à la couronne (16) et à la suite de la bobine d'inductance et qu'un tel dispositif de refroidissement (24) est également prévu de manière à faire suite à la partie terminale inférieure de la bobine d'inductance (14).
8. Four à induction sous vide selon l'une des revendications précédentes, caractérisé en ce qu'un dispositif de refroidissement (25) est placé sous le fond (11) du récipient extérieur (10) et agit sur ce fond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT86104874T ATE36061T1 (de) | 1985-07-11 | 1986-04-09 | Vakuuminduktionsofen. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3524714A DE3524714C1 (de) | 1985-07-11 | 1985-07-11 | Vakuuminduktionsofen |
| DE3524714 | 1985-07-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0208066A1 EP0208066A1 (fr) | 1987-01-14 |
| EP0208066B1 true EP0208066B1 (fr) | 1988-07-27 |
Family
ID=6275459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP86104874A Expired EP0208066B1 (fr) | 1985-07-11 | 1986-04-09 | Four de fusion à induction sous vide |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0208066B1 (fr) |
| AT (1) | ATE36061T1 (fr) |
| DE (2) | DE3524714C1 (fr) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4042468C2 (de) * | 1989-11-09 | 1994-09-15 | Fuji Electric Co Ltd | Vorrichtung zum Erhitzen von geschmolzenem Metall in einer Gießpfanne |
| RU2222756C1 (ru) * | 2002-12-16 | 2004-01-27 | Закрытое акционерное общество "Промышленный центр "МАТЭКС" | Индукционная плавильная тигельная печь для изготовления слитков и отливок из магниевых сплавов |
| CN102564124A (zh) * | 2011-07-28 | 2012-07-11 | 郑坚明 | 一种工业用电磁熔炉 |
| CN102628649A (zh) * | 2012-05-04 | 2012-08-08 | 苏州罗卡节能科技有限公司 | 一种中频感应炉 |
| CN105065857A (zh) * | 2015-08-24 | 2015-11-18 | 许浒 | 一种用于炉窑的保温绝热外套 |
| CN108436044B (zh) * | 2018-05-31 | 2020-05-05 | 佛山峰合精密喷射成形科技有限公司 | 一种熔炼浇铸设备 |
| RU2693717C1 (ru) * | 2018-10-24 | 2019-07-04 | Акционерное общество "Научно-производственное объединение "Центральный научно-исследовательский институт технологии машиностроения" АО "НПО "ЦНИИТМАШ" | Способ изготовления футеровки тигля вакуумной индукционной печи |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH215010A (de) * | 1939-05-05 | 1941-05-31 | Philips Nv | Hochfrequenzinduktionsofen mit bei Betrieb vorhandenem Unterdruck im Ofeninnern. |
| US2665320A (en) * | 1949-09-22 | 1954-01-05 | Nat Res Corp | Metal vaporizing crucible |
| US3412195A (en) * | 1965-08-05 | 1968-11-19 | Haveg Industries Inc | Intermediate furnace barrier |
-
1985
- 1985-07-11 DE DE3524714A patent/DE3524714C1/de not_active Expired
-
1986
- 1986-04-09 EP EP86104874A patent/EP0208066B1/fr not_active Expired
- 1986-04-09 AT AT86104874T patent/ATE36061T1/de not_active IP Right Cessation
- 1986-04-09 DE DE8686104874T patent/DE3660439D1/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE3524714C1 (de) | 1986-07-10 |
| ATE36061T1 (de) | 1988-08-15 |
| EP0208066A1 (fr) | 1987-01-14 |
| DE3660439D1 (en) | 1988-09-01 |
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