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AT97104B - Process for the production of tungsten or molybdenum carbide. - Google Patents

Process for the production of tungsten or molybdenum carbide.

Info

Publication number
AT97104B
AT97104B AT97104DA AT97104B AT 97104 B AT97104 B AT 97104B AT 97104D A AT97104D A AT 97104DA AT 97104 B AT97104 B AT 97104B
Authority
AT
Austria
Prior art keywords
tungsten
production
molybdenum carbide
molybdenum
carbon
Prior art date
Application number
Other languages
German (de)
Original Assignee
Lohmann Metall G M B H
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 Lohmann Metall G M B H filed Critical Lohmann Metall G M B H
Application granted granted Critical
Publication of AT97104B publication Critical patent/AT97104B/en

Links

Classifications

    • 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
    • C22C1/10—Alloys containing non-metals
    • C22C1/1036—Alloys containing non-metals starting from a melt
    • C22C1/1068—Making hard metals based on borides, carbides, nitrides, oxides or silicides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/90—Carbides
    • C01B32/914—Carbides of single elements
    • C01B32/949—Tungsten or molybdenum carbides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur   Herstellung von Wolfram- oder Molybd nkarbid.   
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 vollkommen homogen zusammengesetzter Stücke aus Wolframkarbid und   Molybdänkarbids   in denkbar wirtschaftlichster und vollkommenster Weise dadurch, dass das mit einem entsprechenden Kohlenstoffzusatz versehene pulverförmige Schmelzgut (Wolfram bzw. Wolframoxyd,   Molybdän   bzw.   Molybdänoxyd)   einer durchaus gleichmässigen,   konzentrischen Erwärmung unterworfen,   und die   Erwärmung selbst so   hoch getrieben wird, dass ein durch die ganze Masse vollständig gleichmässig temperierter   Schmelzfluss   erzielt wird. 



   Das Verfahren selbst wird so ausgeübt, dass das mit den erforderlichen   Kohlenstoffmengen   vermischte pulverförmige Wolfram bzw. Wolframoxyd, Molybdän bzw.   Molybdänoxyd   der konzentrischen   Wärmeeinwirkung   eines Kohlerohrwiderstandsofens ausgesetzt wird, dessen   Leistungsfähigkeit   bis über 
 EMI2.2 
 mässig verteilte Temperatur innerhalb des Ofenraum aufrecht zu erhalten, die zur Verflüssigung des Wolframs ausreicht. 



   Zu diesem Zweck wird ein elektrischer Ofen verwendet, der in seiner Anordnung dem an sich bekannten Kohlerohrwiderstandsofen entspricht, jedoch an Stelle von Metallklemmen mit solchen aus Kohlenstoff versehen ist. Es hat sich herausgestellt, dass erst durch die Verwendung dieser   Klemmen   aus   Kohlenstoff die praktische Lösung der vorliegenden Aufgabe in wirtschaftlicher und einwandfreier Weise möglich wird.  



   <Desc / Clms Page number 1>
 



  Process for the production of tungsten or molybdenum carbide.
 EMI1.1
 

 <Desc / Clms Page number 2>

 
 EMI2.1
 perfectly homogeneous pieces of tungsten carbide and molybdenum carbide in the most economical and perfect way imaginable, in that the powdered melt material (tungsten or tungsten oxide, molybdenum or molybdenum oxide) is subjected to a thoroughly uniform, concentric heating, and the heating itself is so high is driven so that a melt flow that is completely uniformly tempered through the entire mass is achieved.



   The process itself is carried out in such a way that the powdery tungsten or tungsten oxide, molybdenum or molybdenum oxide mixed with the required amounts of carbon is exposed to the concentric heat effects of a carbon tube resistance furnace, the efficiency of which is up to over
 EMI2.2
 Maintain a moderately distributed temperature within the furnace chamber that is sufficient to liquefy the tungsten.



   For this purpose, an electric furnace is used, the arrangement of which corresponds to the carbon tube resistance furnace known per se, but is provided with carbon clamps instead of metal clamps. It has been found that only through the use of these clamps made of carbon is the practical solution of the present problem possible in an economical and flawless manner.

Claims (1)

PATENT-ANSPRUCH : EMI2.3 grosser homogener Stücke die Reaktion in einem an sich bekannten Kohlerohrwiderstandsofen vorge- .-genommen wird, dessen Stromzuführungsklemmen ebenfalls aus Kohlenstoff bestehen. PATENT CLAIM: EMI2.3 of large, homogeneous pieces, the reaction is carried out in a carbon tube resistance furnace known per se, the power supply terminals of which are also made of carbon.
AT97104D 1914-04-16 1920-10-30 Process for the production of tungsten or molybdenum carbide. AT97104B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE533062X 1914-04-16

Publications (1)

Publication Number Publication Date
AT97104B true AT97104B (en) 1924-06-10

Family

ID=6555829

Family Applications (1)

Application Number Title Priority Date Filing Date
AT97104D AT97104B (en) 1914-04-16 1920-10-30 Process for the production of tungsten or molybdenum carbide.

Country Status (4)

Country Link
AT (1) AT97104B (en)
CH (1) CH88775A (en)
FR (1) FR533062A (en)
GB (1) GB157750A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110422846B (en) * 2019-08-13 2022-06-07 哈尔滨工业大学 Synthesis method of molybdenum carbide nano material

Also Published As

Publication number Publication date
FR533062A (en) 1922-02-18
CH88775A (en) 1921-03-16
GB157750A (en) 1922-05-10

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