EP1450974A1 - Aus heizbarem giessgefäss und einem heizstand bestehende vorrichtung - Google Patents
Aus heizbarem giessgefäss und einem heizstand bestehende vorrichtungInfo
- Publication number
- EP1450974A1 EP1450974A1 EP02794964A EP02794964A EP1450974A1 EP 1450974 A1 EP1450974 A1 EP 1450974A1 EP 02794964 A EP02794964 A EP 02794964A EP 02794964 A EP02794964 A EP 02794964A EP 1450974 A1 EP1450974 A1 EP 1450974A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vessel
- casting vessel
- casting
- slots
- heating
- 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.)
- Granted
Links
- 238000005266 casting Methods 0.000 title claims abstract description 43
- 238000009847 ladle furnace Methods 0.000 title abstract 3
- 229910052751 metal Inorganic materials 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 30
- 230000005291 magnetic effect Effects 0.000 claims abstract description 23
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims description 39
- 239000000155 melt Substances 0.000 claims description 16
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 238000007872 degassing Methods 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 150000002739 metals Chemical class 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 238000005275 alloying Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 2
- 239000007769 metal material Substances 0.000 abstract 1
- 239000012768 molten material Substances 0.000 abstract 1
- 238000011282 treatment Methods 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 230000006698 induction Effects 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 229910001092 metal group alloy Inorganic materials 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 3
- 229910001338 liquidmetal Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000010120 permanent mold casting Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/005—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
- B22D41/01—Heating means
- B22D41/015—Heating means with external heating, i.e. the heat source not being a part of the ladle
-
- 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
- F27B2014/0843—Lining or casing
-
- 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
- F27B2014/0862—Flux guides
Definitions
- the invention relates to a device according to the preamble of claim 1.
- the metals In order to bring a metal or a metal alloy into a castable state, the metals first have to be melted, then optionally subjected to a metallurgical intermediate treatment and finally to the casting process itself.
- the metallic raw materials are mostly melted in a large-volume melting furnace, from where the melts are transferred to a pan and from there to a casting plant.
- many metals or metal alloys are sensitive to temperature fluctuations, and tend to be exposed to oxygen and hydrogen or other substances passing through the air or through contact with the vessels used, e.g. Iron to enter into unwanted reactions that lead to unwanted accompanying substances in the melt.
- Z.T. form dross, also via undesired chemical reactions at the respective molten metal level. Many of the above-mentioned reactions are promoted by decanting the metal melt one or more times.
- Negative effects also occur if the aluminum melt with moisture, e.g. B. moist air comes into contact. Due to the high temperatures, the water splits into its components hydrogen and oxygen, whereby dissolved hydrogen in the melt separates again in the form of enclosed gas bubbles during the solidification process; the pores formed by hydrogen separation interrupt the structure in the casting.
- moisture e.g. B. moist air comes into contact. Due to the high temperatures, the water splits into its components hydrogen and oxygen, whereby dissolved hydrogen in the melt separates again in the form of enclosed gas bubbles during the solidification process; the pores formed by hydrogen separation interrupt the structure in the casting.
- induction conveying troughs which transfer the liquid aluminum or aluminum alloy from a melting furnace into a tiltable treatment and casting furnace.
- induction conveying troughs By induction of an alternating magnetic field in the liquid metal, eddy currents are generated, which in interaction can exert a mechanical force on the metal that moves the metal.
- the induced eddy currents also heat the liquid metal, so that temperature losses can be compensated for.
- induction crucible furnaces in which both a melt bath movement is achieved by means of the existing magnetic coil generated as well as keeping warm is guaranteed.
- the inner wall it is necessary for the inner wall to consist of non-magnetic, electrically non-conductive, refractory material, so that the magnetic fields are not impaired and the heat development occurs directly in the melting material.
- Induction troughs for conveying molten metal between two metallurgical vessels are, however, constructional and costly. In addition, these channels require space and do not allow any flexibility.
- the transport vessels that are still used in foundry technology have the disadvantage that, due to the lack of their own heating system, a not inconsiderable temperature loss of the melt during transport has to be accepted.
- it would be possible to provide the transport containers with an inductively operating heater but this has the disadvantage that the power supply line, including the cooling devices for the coil, must then be carried along.
- a heating device installed in the lower region of a transport vessel would considerably increase the weight and volume of this transport vessel and thus make it considerably more difficult to handle.
- a device for keeping metallic melts warm in a ladle which is lined with refractory material and which has a fixed, designed as an independent structural unit, an electro-inductive heating device and a portable ladle which can be inserted therein, the jacket of which is entirely or at least in the area of action of the heating device made of electrically non-conductive material.
- the shell of the ladle can consist entirely or at least in the area of the action of the heating device made of a plastic, preferably reinforced by inserts such as glass fibers, or of longitudinally laminated sheets, between each of which a plastic insulating layer is provided.
- this vessel can be used both as a transport vessel and as a holding, alloying and / or degassing vessel and possibly also as a casting vessel, from which the desired batches are removed using a ladle.
- the molten metal transferred from a melting vessel into the casting vessel is transferred to a heating station, where the casting vessel is placed or used and the melt is inductively heated and a bath movement is generated.
- post-treatments such as degassing, grain refinement or even alloy settings can be carried out before the casting vessel is removed from the heating stand and led to the casting plant, which can be a rotary table system for permanent mold casting or a continuous casting plant.
- the pouring vessels preferably have a filling volume of 1 to 3 tons.
- the vessel structure is basically known from ladle metallurgy, ie the vessels have a refractory lining and an outer metal jacket, which, however, must not be ferromagnetic in the lower area in order not to impair the desired magnetic field structure and the generation of eddy currents in the melt.
- the metal jacket has slot-shaped openings in the lower region, which are located at the level of the magnetic coil when the casting vessel is attached.
- the slots mentioned prevent a large-scale generation of eddy currents in a structurally simple manner, which could lead to overheating and damage to the ladle.
- the length of the slots is preferably between 120% and 150% of the length of the magnetic coil, ie the slots protrude above and below the magnetic coil in the axial direction.
- the number of slots, which are preferably arranged equidistantly in the vessel jacket, is essentially determined by the casting vessel diameter. With the filling volumes specified above, there should be 4, 6, 8 or more slots in the metal jacket.
- the magnetic coil is preferably surrounded by an iron core (yoke).
- the position of the slots in the casting vessel jacket is approximately congruent in height with the position of the yokes.
- the width of the slots is between 2 mm and 10 mm. Such a slot width on the one hand effectively prevents the formation of large eddy currents, on the other hand the slot width is so small that the stability of the casting vessel is not impaired.
- the heating station has a magnetic coil, which preferably contains at least two windings and which is surrounded by an iron core (yokes).
- the multiple winding of the magnetic coil creates the advantage that the height of the heating stand can be minimized, e.g. to 150 to 300 mm, since the multilayer of the winding enables a correspondingly higher desired performance to be achieved.
- the magnetic coil and the yokes are preferably arranged in a frame, which then form the heating station.
- the heating position is adjustable in height, which has the advantage that the vessel placed and centered on existing supports or a frame is then coupled to the heating position by the heating position being raised around the lower area or before the further transport of the Vessel is lowered.
- the heating station preferably consists of an annular base in which the magnet coil is integrated.
- the vessel shows its lower area has an outer shape which is adapted to the inner jacket of the annular base, ie that when the vessel is placed or inserted, an air gap which is adapted to the dimensions remains between the magnet coil and the vessel jacket.
- a frame is used as a support or supports are provided which have a support surface adapted to the vessel.
- the transition region of the vessel from the lower part into the upper part with a larger cross section can, according to an alternative embodiment, be designed as a collar-shaped contact surface corresponding to the roof surface of the annular base.
- This type of training is designed for fixed, not height-adjustable heating stations.
- the vessel described above is used as a transport, holding, alloying, degassing and / or casting vessel for molten metals, in particular made of aluminum or aluminum alloys, preferably in such a way that the casting vessel is used on a rotary table system with several working positions or linear system for permanent mold casting is used.
- Fig. 1 shows a cross section through a casting vessel, which is coupled to a heating station and
- FIG. 2 shows a further partially sectioned view of the casting vessel according to FIG. 1.
- the vessel 1 shown is placed on a heating stand 2.
- the vessel 1 has an upper region with a diameter Di of 1100 mm, an intermediate area rich, in which the diameter tapers and a lower area with a diameter D 2 of 500 mm, which is adapted to the geometry of the ladle used.
- the dimensions result in a filling capacity of approx. 2 to (2000 kg) aluminum.
- the vessel 1 has an insulating refractory lining and an outer metal jacket.
- the metal jacket 4 in the lower area consists of a non-ferromagnetic material, for example VA steel.
- a double-layer magnetic coil 5 is arranged at a distance from an air gap 6 and is enclosed by an iron core (yokes 7).
- the coil 5 and the yokes 7 are installed in a common frame 8 which can be raised and lowered, as is made visible by the double arrow 9.
- Existing lifting devices not shown, preferably operate hydraulically.
- three supports 10 serve as supports for the vessel 1, which support the vessel in the conical intermediate region.
- the collar-shaped area 11 can also serve as a support surface on a corresponding annular bearing surface of the heating station.
- An essential feature of the present invention is that the vessel 1 is detachably connected to the heating station 2. If the vessel 1 is placed on or in the heating station 2 in the manner shown, a field is induced by means of the magnetic coil 5, which causes a bath movement in the melt and supplies heat to the melt.
- the heating station 2 can be arranged next to a casting carousel with a plurality of casting molds, so that the desired batch can be removed from the vessel 1 and poured from it by means of a ladle 12.
- the outer metal jacket of the casting vessel is slotted in the lower region, ie at the level of the magnet coil 5.
- the slots 13 run longitudinally axially and project above the magnetic coil or their longitudinal axial height at the top and bottom, the length of the slots being at least 1.2 times the longitudinal axial length of the magnetic coil.
- the magnetic coil is surrounded by yokes 7, which (in height) are approximately congruent with the slots 13.
- the slots project above and below the yokes, respectively.
- the vessel shown serves in the present case as a means of transport for the melt volume filled therein as well as an alloy, holding and degassing vessel.
- the liquid metal or metal alloy removed from a melting furnace remains in one and the same container during transport, any intermediate storage or an intermediate treatment, namely degassing until pouring, so that pouring into other vessels or furnaces is avoided.
- a further heating station 2 can be installed stationary at an intermediate station, on which the vessel 1 is placed in the manner shown and kept at the desired temperature by appropriate inductive heating , Metallurgical treatments of the melt are possible at this intermediate station.
- the alloy removed from the melting furnace is transferred to a pan, which is transported to an intermediate station with a heating station, where the pan is placed on existing supports and then the heating station is raised hydraulically until the lower area of the pan is surrounded by the magnetic coil is.
- the metal melt is degassed in this intermediate station, for example by injecting nitrogen or argon. Any temperature losses are compensated for by the heating energy introduced via the heating station.
- the molten metal is slagged off as required and the pan is transported to a casting plant, where it is centered in a corresponding manner as described above on an existing heating station and then coupled to it by lifting the heating station ,
- the ladle can then be successively removed from the metal melt in batches for casting in molds, which are arranged, for example, on a casting carousel, using a ladle become.
- the lower tapering of the vessel to a diameter adapted to the ladle serves the purpose that the pan can be practically completely emptied.
- the combination of the vessel and the heating stand according to the invention can be used for any metal or metal alloy melts, in particular if casting processes are to be avoided as far as possible.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Furnace Details (AREA)
- General Induction Heating (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10159306 | 2001-12-04 | ||
| DE10159306A DE10159306A1 (de) | 2001-12-04 | 2001-12-04 | Induktiv heizbares Gefäß für metallisches Schmelzgut und Verwendung dieses Gefäßes |
| PCT/DE2002/004407 WO2003047792A1 (de) | 2001-12-04 | 2002-12-02 | Aus heizbarem giessgefäss und einem heizstand bestehende vorrichtung |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1450974A1 true EP1450974A1 (de) | 2004-09-01 |
| EP1450974B1 EP1450974B1 (de) | 2005-06-15 |
| EP1450974B8 EP1450974B8 (de) | 2005-08-17 |
Family
ID=7707864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02794964A Expired - Lifetime EP1450974B8 (de) | 2001-12-04 | 2002-12-02 | Aus heizbarem giessgefäss und einem heizstand bestehende vorrichtung |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1450974B8 (de) |
| AT (1) | ATE297825T1 (de) |
| AU (1) | AU2002360884A1 (de) |
| DE (2) | DE10159306A1 (de) |
| WO (1) | WO2003047792A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643151A (zh) * | 2016-11-28 | 2017-05-10 | 无锡市莱达热工工程有限公司 | 熔锌保温炉 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004008044A1 (de) * | 2004-02-19 | 2005-09-08 | INDUGA Industrieöfen und Giesserei-Anlagen GmbH & Co. KG | Aus heizbarem Gießgefäß und einem Heizstand bestehende Vorrichtung |
| DE102013114811B3 (de) * | 2013-12-23 | 2014-12-31 | Ald Vacuum Technologies Gmbh | Vorrichtung und Verfahren zum Behandeln von metallischem Material |
| DE102014110251A1 (de) * | 2014-07-21 | 2016-01-21 | Stephan Schwenkel | Schmelzaggregat zum Einschmelzen von Gusswerkstoffen sowie ein Verfahren zur Herstellung einer Schmelze für das Gießen |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1795842A (en) * | 1929-01-08 | 1931-03-10 | Westinghouse Electric & Mfg Co | Induction furnace |
| GB893862A (en) * | 1957-09-04 | 1962-04-18 | Wild Barfield Electr Furnaces | Induction heated furnaces |
| DE1136435B (de) * | 1958-03-19 | 1962-09-13 | Aeg | Rinnenloser Induktionstiegelofen zum Schmelzen von Metallen, UEberhitzen und Warmhalten von Metallschmelzen |
| DE2035221B1 (de) * | 1970-07-16 | 1971-10-14 | Deutsche Edelstahlwerke AG, 4150Krefeld | Einrichtung zum Warmhalten von metallischen Schmelzen |
| JPS59143559U (ja) * | 1983-03-18 | 1984-09-26 | 川崎製鉄株式会社 | 溶鋼加熱装置付き連鋳タンデイツシユ |
| SE452190B (sv) * | 1984-02-06 | 1987-11-16 | Asea Ab | Skenk eller vermare (tundish) for induktiv vermning och/eller omroring av metalliska smeltor sasom stal |
| DE3910777C2 (de) * | 1989-04-04 | 2001-08-09 | Ald Vacuum Techn Ag | Induktionsofen mit einem metallischen Tiegel |
| JP2692367B2 (ja) * | 1989-11-09 | 1997-12-17 | 富士電機株式会社 | 取鍋の浴湯加熱装置 |
| US5425048A (en) * | 1990-01-31 | 1995-06-13 | Inductotherm Corp. | Heating apparatus for induction ladle and vacuum furnaces |
| DE20119657U1 (de) * | 2001-12-04 | 2002-03-21 | INDUGA Industrieöfen und Gießerei-Anlagen GmbH & Co. KG, 50739 Köln | Induktiv heizbares Gefäß für metallisches Schmelzgut |
-
2001
- 2001-12-04 DE DE10159306A patent/DE10159306A1/de not_active Withdrawn
-
2002
- 2002-12-02 WO PCT/DE2002/004407 patent/WO2003047792A1/de not_active Ceased
- 2002-12-02 DE DE50203641T patent/DE50203641D1/de not_active Expired - Lifetime
- 2002-12-02 AT AT02794964T patent/ATE297825T1/de not_active IP Right Cessation
- 2002-12-02 EP EP02794964A patent/EP1450974B8/de not_active Expired - Lifetime
- 2002-12-02 AU AU2002360884A patent/AU2002360884A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03047792A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643151A (zh) * | 2016-11-28 | 2017-05-10 | 无锡市莱达热工工程有限公司 | 熔锌保温炉 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10159306A1 (de) | 2003-06-12 |
| AU2002360884A1 (en) | 2003-06-17 |
| WO2003047792A8 (de) | 2005-08-18 |
| WO2003047792A1 (de) | 2003-06-12 |
| DE50203641D1 (de) | 2005-08-18 |
| ATE297825T1 (de) | 2005-07-15 |
| EP1450974B1 (de) | 2005-06-15 |
| EP1450974B8 (de) | 2005-08-17 |
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