CH89732A - Melting and casting processes for metals. - Google Patents
Melting and casting processes for metals.Info
- Publication number
- CH89732A CH89732A CH89732DA CH89732A CH 89732 A CH89732 A CH 89732A CH 89732D A CH89732D A CH 89732DA CH 89732 A CH89732 A CH 89732A
- Authority
- CH
- Switzerland
- Prior art keywords
- chamber
- melting
- metals
- crucible
- metal
- Prior art date
Links
- 239000002184 metal Substances 0.000 title claims description 10
- 229910052751 metal Inorganic materials 0.000 title claims description 10
- 238000005266 casting Methods 0.000 title claims description 6
- 230000008018 melting Effects 0.000 title claims description 5
- 238000010309 melting process Methods 0.000 title claims description 5
- 150000002739 metals Chemical class 0.000 title claims description 3
- 239000007789 gas Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
- F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces heated electrically, with or without any other source of heat
- F27B3/085—Arc furnaces
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- 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
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
- F27B3/10—Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
- F27B3/18—Arrangements of devices for charging
-
- 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
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
- F27D2003/0075—Charging or discharging vertically, e.g. through a bottom opening
-
- 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
- F27D7/00—Forming, maintaining or circulating atmospheres in heating chambers
- F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
- F27D2007/066—Vacuum
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
Schmelz- und Giessverfahren für Metalle. Die Erfindung betrifft ein Verfahren zum Schmelzen und (liessen von Metall.
Die Zeichnung veranschaulicht eine bei spielsweise Ausführungsforrii des Erfindungs gegenstandes.
Fig. 1 ist ein Schnitt durch die Vorrich tung mit dem mit geschmolzenem Metall ge füllten Tiegel; Fig. 2 ist ein senkrechter Schnitt nach der Linie II-II der Fig. 1 mit dem Tiegel in der obern Stellung, in welcher der Inhalt dem Heizmittel ausgesetzt wird; Fig. 3 ist ein wagrerhter Schnitt nach der Linie Irr-III der Fig. 2 mit dein Tie gel in der untern Stellung; Fig. 4 ist ein senkrechter Schnitt nach der Linie IV- IV der Fig.2.
In der Schmelzkammer 5 wird mittelst eines elektrischen Stromes die erforderliche Hitze erzeugt. An Stelle eines solchen elek trischen Lichtbogenofens kann ein Strahl bogenofen oder irgend ein anderer Ofen Ver wendung finden. Ohne Rücksicht auf die Art des zu verwendenden Ofens sollte der in der Heizkammer erzeugte Gasdruck im Stande sein, das Eindringen von Aussenluft in die Kammer zu verhindern.
In dem obern Kammerraum 5, durch welche von oben die Heizelektroden 8, 9 treten, ist ein Tiegel 10 vorgesehen. Der Boden 11 die ses Raumes 5 ist vermittelst eines h5 drau- lischen Zylinders 12 senkrecht einstellbar. Der Tiegel ist auf dem Kammerboden an geordnet, welcher finit der Wandung der Kam mer durch einen Sandverschluss 13 in Ver bindung steht. Wenn der Schmelzvorgang beendet ist, wird der Boden 11 nach abwärts in den untern Kammerraum 14 bewegt.
Die ser Teil 14 ist mit einer Giesskammer 15 verbunden, welche eine Tür<B>16</B> aufweist und zur Aufnahme einer Giessform 17 dient. Durch die Seitenwandung des Raumes 14 tritt ein Rohr 18, an dessen üinern Ende Greifer 19 befestigt sind, welche vermittelst einer Schrau be 20 verstellbar sind. Diese Greifer erfassen den Tiegel 10, wenn dieser in die untere Stellung in dein Raum 14 bewegt wird. An dem anderen Ende der Leitung 18 ist eine in einem Kurvenschlitz eines Sektors geführte Stange 21 vorgesehen, welche in irgend einer bestimmten Stellung festgestellt werden kann.
Eine an dein obern Ende der Giesskammer 15 angeschlossene Rohrleitung 22 verbindet die Kammer mit einer Vakuumpumpe 23. Der Kanrmerraunr 14 weist eine Tür 24 auf.
Das Verfahren wird auf folgende Weise durchgeführt Das zu schmelzende Material wird in den Tiegel 10 eingebracht. Der Tiegel wird auf den bewegli < #lrerr Boden 11 der Kammer 5 auf--esetzt, wenn sich der Boden in der untern Stt-llung 3 der Kammer 14 befindet.
Nun wird der Bodcn durch den hydraulischen Zy linder 12 in die Stellung B bewegt und dem Huizmittel ausgesetzt, bis das Metall flüssig wir;l. In der Kammer 5 befindet sich zu die- ser- Zeit nur eine geringe Luftmenge oder nicht oxydicrt-rides Gas.
Nach erfolgter Be- endIgun;; du, Schmelzvorganges wird der BoOlen 11 in die Stellung A zurückgeführt, in ;welcher dur Tiegel 10 von dun (freifern 19 erfala't wird. In der Zwischenzeit entleert die Luftpumpe _die Luft aus dem Kammer- raum 14 und der Giefjkarnmer 15 und treibt div Luft aus der Kammer 5 aus.
Nachdem die richtige Luftleere vorhanden ist, wird der Tiegel 10 rirngestülpt und das flüssige -Metall in die Form 17 abgeführt.
Statt Luft abzusaugen, kann inertes Gas unter Druck durch das Rohr fi in die Kam- rner 5 eingeführt werden, welches in die Kammern 14, 15 zieht und die darin enthal tene Luft austreibt. Wenn dieser Druck die erforderliche Stärke erreicht, um ein Eindrin- gen der Aussenluft zu verhindern, kann das Unigiessen des Metalles aus dem Tiegel vor sich gehen.
Melting and casting processes for metals. The invention relates to a method for melting and (leaving metal.
The drawing illustrates an example embodiment of the invention.
Fig. 1 is a section through the device Vorrich with the molten metal GE filled crucible; Fig. 2 is a vertical section on the line II-II of Fig. 1 with the crucible in the upper position in which the contents are exposed to the heating means; Fig. 3 is a horizontal section along the line Irr-III of Figure 2 with your Tie gel in the lower position; FIG. 4 is a vertical section along the line IV-IV of FIG.
The required heat is generated in the melting chamber 5 by means of an electric current. Instead of such an electric arc furnace, a beam arc furnace or any other furnace can be used. Regardless of the type of furnace to be used, the gas pressure generated in the heating chamber should be able to prevent outside air from entering the chamber.
In the upper chamber space 5, through which the heating electrodes 8, 9 pass from above, a crucible 10 is provided. The floor 11 of this space 5 can be adjusted vertically by means of an external cylinder 12. The crucible is arranged on the chamber floor, which is finitely connected to the wall of the chamber through a sand seal 13. When the melting process has ended, the base 11 is moved downward into the lower chamber space 14.
This part 14 is connected to a casting chamber 15, which has a door 16 and is used to receive a casting mold 17. Through the side wall of the space 14, a tube 18 occurs, at the üinern end of which grippers 19 are attached, which be 20 by means of a screw are adjustable. These grippers grasp the crucible 10 when it is moved into the lower position in your room 14. At the other end of the line 18, a rod 21 guided in a curved slot of a sector is provided, which rod can be fixed in any particular position.
A pipe 22 connected to the upper end of the casting chamber 15 connects the chamber to a vacuum pump 23. The canister chamber 14 has a door 24.
The process is carried out in the following manner. The material to be melted is placed in the crucible 10. The crucible is placed on the movable floor 11 of the chamber 5 when the floor is in the lower position 3 of the chamber 14.
The bottom is now moved by the hydraulic cylinder 12 into position B and exposed to the heating medium until the metal becomes liquid; At this time there is only a small amount of air or non-oxidic gas in the chamber 5.
After completion ;; During the melting process, the pan 11 is returned to position A, in; which is filled by crucible 10 from free 19. In the meantime, the air pump empties the air from the chamber 14 and the Giefjkarnmer 15 and drives various Air out of chamber 5.
After the correct air void is present, the crucible 10 is turned inside out and the liquid metal is discharged into the mold 17.
Instead of sucking off air, inert gas can be introduced under pressure through the pipe fi into the chamber 5, which gas draws into the chambers 14, 15 and expels the air contained therein. When this pressure reaches the required strength to prevent the outside air from penetrating, the metal can be poured out of the crucible.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH89732T | 1920-08-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH89732A true CH89732A (en) | 1921-06-16 |
Family
ID=4346894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH89732D CH89732A (en) | 1920-08-26 | 1920-08-26 | Melting and casting processes for metals. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH89732A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2779217A1 (en) * | 1998-06-02 | 1999-12-03 | Francois Studer Sa | HEAT TREATMENT PLANT |
-
1920
- 1920-08-26 CH CH89732D patent/CH89732A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2779217A1 (en) * | 1998-06-02 | 1999-12-03 | Francois Studer Sa | HEAT TREATMENT PLANT |
| WO1999063289A1 (en) * | 1998-06-02 | 1999-12-09 | Studer François S.A. | Heat processing installation |
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