DEP0047728DA - Process for degassing molten metal - Google Patents
Process for degassing molten metalInfo
- Publication number
- DEP0047728DA DEP0047728DA DEP0047728DA DE P0047728D A DEP0047728D A DE P0047728DA DE P0047728D A DEP0047728D A DE P0047728DA
- Authority
- DE
- Germany
- Prior art keywords
- molten metal
- degassing
- metals
- degassing molten
- carried out
- 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
- 239000002184 metal Substances 0.000 title claims description 12
- 229910052751 metal Inorganic materials 0.000 title claims description 12
- 238000000034 method Methods 0.000 title claims description 8
- 238000007872 degassing Methods 0.000 title claims description 6
- 238000010309 melting process Methods 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 description 8
- 239000007789 gas Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Description
Alle Metalle, die nicht besonderen Prozessen unterworfen wurden, enthalten Gaseinschlüsse, die von ihren Gewinnungs- und Raffinationsverfahren, z.B. durch Aufnahme von Gebläseluft beim Scheiden von Blei von Edelmetallen durch Treiben herrühren. Für viele Zwecke, beispielsweise in der Hochvakuumtechnik, für Glaseinschmelzungen oder wenn bestimmte physikalische Eigenschaften verlangt werden, sind derartige mit Gaseinschlüssen behaftete Metalle aber vollkommen ungeeignet. Man hat deshalb verschiedene Verfahren angewendet, um für solche Zwecke bestimmte Metalle zu entgasen. So hat man diese Metalle im Vakuum geglüht oder auch dieses Ausglühen im Wasserstoffstrom vorgenommen, da es sich zeigte, daß Wasserstoff die eingeschlossenen Gase verdrängt, sich selbst dann aber, z.B. bei Anwendung des Metalles in der Vakuumtechnik, leicht wieder aus den Metallen abpumpen läßt.All metals that have not been subjected to special processes contain gas inclusions that result from their extraction and refining processes, e.g. through the intake of forced air when separating lead from precious metals by drifting. For many purposes, for example in high vacuum technology, for glass sealing or when certain physical properties are required, such metals with gas inclusions are completely unsuitable. Various methods have therefore been used to degas certain metals for such purposes. These metals have been annealed in a vacuum or this annealing carried out in a hydrogen stream, since it has been shown that hydrogen displaces the enclosed gases, but even then, e.g. when the metal is used in vacuum technology, it can easily be pumped out of the metals again.
Man ist auch dazu übergegangen, Metalle bereits im flüssigen Zustand zu entgasen und hat zu diesem Zweck den Schmelzprozeß im Vakuum vorgenommen. Diese Methode ist vielfach für die Entgasung von weichmagnetischen Metallen und deren Legierungen, sowie für Einschmelzmaterialien, wie Nickeleisen, Chromeisen etc. angewendet worden.There has also been a move towards degassing metals already in the liquid state and for this purpose the melting process has been carried out in a vacuum. This method has been used many times for the degassing of soft magnetic metals and their alloys, as well as for melting materials such as nickel iron, chrome iron, etc.
Auch hat man schon versucht, die Metalle in flüssigem Zustand einem hochfrequenten Schallfeld auszusetzen, um dadurch eine Entfernung der Gaseinschlüsse zu erreichen.Attempts have also been made to expose the metals in their liquid state to a high-frequency sound field in order to remove the gas inclusions.
Alle diese Verfahren erfordern aber einen großen Zeitaufwand, so daß die komplizierten Apparaturen für jede Entgasung lange Zeit in Anspruch genommen werden. Daher ist die Anwendung dieserHowever, all of these processes require a great deal of time, so that the complicated apparatuses are used for a long time for each degassing. Hence the application of this
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Claims (2)
Family
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