DE351656C - Process for melting easily oxidizable metals - Google Patents

Process for melting easily oxidizable metals

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Publication number
DE351656C
DE351656C DE1919351656D DE351656DD DE351656C DE 351656 C DE351656 C DE 351656C DE 1919351656 D DE1919351656 D DE 1919351656D DE 351656D D DE351656D D DE 351656DD DE 351656 C DE351656 C DE 351656C
Authority
DE
Germany
Prior art keywords
melting
easily oxidizable
oxidizable metals
metals
melting easily
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
Application number
DE1919351656D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metallbank und Metallurgische Gesellschaft AG
Original Assignee
Metallbank und Metallurgische Gesellschaft AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Metallbank und Metallurgische Gesellschaft AG filed Critical Metallbank und Metallurgische Gesellschaft AG
Application granted granted Critical
Publication of DE351656C publication Critical patent/DE351656C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/006General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with use of an inert protective material including the use of an inert gas

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Description

Verfahren zum Schmelzen von leicht oxydierbaren Metallen. Beim Schmelzen von solchen Metallen, die eine größere Affinität zum Luftsauerstoff haben, muß man mit einer besonderen Vorsicht verfahren, um ein Verbrennen des Metalles zu verhindern. Es -war bisher üblich, die geschmolzene Legierung vor den Einwirkungen der Luft zu schützen, indem man auf das Metall pulverisierte Holzkohle aufgab, die Schmelzung in vollständig geschlossenen Gefäßen oder das Einschmelzen mit Hilfe von indifferenten Gasen vornahm.Process for melting easily oxidizable metals. When melting of metals that have a greater affinity for atmospheric oxygen, one must Proceed with special care to avoid burning the metal. It was customary until now to protect the molten alloy from exposure to air to protect the smelting by placing pulverized charcoal on the metal in completely closed vessels or melting down with the help of indifferent ones Made gases.

Diese Verfahren haben teils den Nachteil, sehr unwirksam zu sein oder in ihrer Ausführung zu großen konstruktiven Komplikationen zu führen. Die Schwierigkeiten beim Schmelzen von leicht oxydierbaren Metallen treten in ganz besonders hohem Maße beim Schmelzen von Legierungen der Alkali- oder Erdalkalimetalle auf. Bekanntlich reagieren diese Metalle mit Kohlenstoff und mit fast sämtlichen bekannten Gasen.Some of these methods have the disadvantage of being or being very ineffective lead to major constructive complications in their execution. Difficulties in the melting of easily oxidizable metals occur to a particularly high degree when melting alloys of alkali or alkaline earth metals. As is well known these metals react with carbon and with almost all known gases.

Es wurde gefunden, daß sich die oben genannten Metalle trotzdem ohne nennenswerten Abbrand einschmelzen lassen, sofern man die Schmelze mit einem Schwimmer versieht, der spezifisch leichter ist als das Metall und sich infolgedessen auf dessen Oberfläche schwimmend verhält. Die mit der Luft in Berührung kommende wirksame Oberfläche wird durch diesen Schwimmer auf ein Mindestmaß herabgedrückt. So kann man beispielsweise beim Schmelzen von Blei-Kalzium-Logierungen in der Weise verfahren, -daß man auf das geschmolzene Metall einen eisernen Körper auflegt, der die Oberfläche ganz oder teilweise bedeckt hält. Verwendet man Zinnlegierungen, so empfiehlt es sich, Schwimmer mit einem entsprechend niedrigeren spezifischen Gewicht zu nehmen, wie beispielsweise solche aus Ton. Der Vorteil des Verfahrens liegt darin, daß man die Luft vom Metall beinahe vollständig abhalten kann. Die zwischen der Tiegelwand und dem Schwimmer befindlichen Metallflächen kann man mittels Holzkohle vor den Einwirkungen der Luft schützen.It has been found that the metals mentioned above are still without Melt down noteworthy burn-off, provided that the melt can be melted with a float that is specifically lighter than the metal and consequently on itself whose surface behaves in a floating manner. The effective one that comes into contact with the air Surface is pushed down to a minimum by this float. So can for example, when melting lead-calcium logs, one proceeds in the way that -that an iron body is placed on the molten metal, which forms the surface completely or partially covered. If tin alloys are used, it is recommended to take swimmers with a correspondingly lower specific weight, such as those made of clay. The advantage of the process is that you can can keep the air off the metal almost completely. The one between the crucible wall and the metal surfaces located on the float can be used with charcoal in front of the Protect the effects of the air.

Claims (1)

PATENT-ANsPRUcH: Verfahren zum Schmelzen von leicht oxydierbaren Metallen, dadurch gekennzeichnet, daß man die Oberfläche mit einem Schwimmer versieht, der diese möglichst vollständig bedeckt hält.PATENT CLAIM: Process for melting easily oxidizable metals, characterized in that the surface is provided with a float that keeps this covered as completely as possible.
DE1919351656D 1919-09-19 1919-09-19 Process for melting easily oxidizable metals Expired DE351656C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE351656T 1919-09-19

Publications (1)

Publication Number Publication Date
DE351656C true DE351656C (en) 1922-04-11

Family

ID=6270159

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1919351656D Expired DE351656C (en) 1919-09-19 1919-09-19 Process for melting easily oxidizable metals

Country Status (1)

Country Link
DE (1) DE351656C (en)

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