CH96341A - Process for the production of very hard metal alloys for tools that are resistant to breakage. - Google Patents

Process for the production of very hard metal alloys for tools that are resistant to breakage.

Info

Publication number
CH96341A
CH96341A CH96341DA CH96341A CH 96341 A CH96341 A CH 96341A CH 96341D A CH96341D A CH 96341DA CH 96341 A CH96341 A CH 96341A
Authority
CH
Switzerland
Prior art keywords
production
metal alloys
hard metal
carbon
breakage
Prior art date
Application number
Other languages
German (de)
Inventor
Lohmann-Metall G M B H
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
Publication of CH96341A publication Critical patent/CH96341A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/02—Pretreatment of the material to be coated
    • 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
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Forging (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Description

  

  Verfahren zur Herstellung sehr harter, gegen Bruch widerstandsfähiger       1ltetallegierungen    für Werkzeuge.    Die Erfindung bezieht sich auf ein Ver  fahren zur Herstellung sehr harter Metall  legierungen, welche der Härte des Diamanten  nahekommen, dabei aber nicht die Sprödigkeit  des Diamanten aufweisen, wodurch dessen  Widerstandsfähigkeit gegen mechanische Be  anspruchungen wesentlich verringert wird.  



  Das Verfahren besteht darin, dass man  eines der bekannten, technisch     verärbeitbaren     Metalle unter Ausschluss von Kohlenstoff und  Sauerstoff mit Bor und Silizium durch einen       Schmelzprozess    legiert und die so entstandene  Legierung zur weiteren Erhöhung der Härte  mechanisch bearbeitet.  



  Unter den technisch     verarbeitbaren    Metal  len werden insbesondere Eisen, Wolfram,  Titan, Chrom, Nickel,     Molybdän    verstanden.  



  Durch dieses Verfahren wird     dieHerstellung     sehr harter Metallegierungen ermöglicht, die  durch mechanische Bearbeitung (Walzen,  Hämmern, Pressen und dergleichen)     verarbeit-          bar    sind und deren Härteeigenschaften durch  den Bearbeitungsvorgang noch gesteigert wer  den können. Dadurch sind wesentliche Vorteile    des neuen Produktes gegenüber den nach den  bisher bekannten     Verfahren    hergestellten Pro  dukten gegeben.  



  <I>Beispiel</I>  Silizium, Bor und Wolfram werden ge  meinsam in einem mit Wolfram ausgefütterten       Kohletiegel    eingeschmolzen. Hierbei     nimmtdas     Metall aus dem Tiegel geringe Mengen Kohlen  stoff auf, der durch Einbetten der Legierung in       Metalloxyd    und hohe Erhitzung wieder entfernt  wird. Der     gohletiegel    ist mit     Wolfram-Metall     ausgefüttert, um eine möglichst geringe Auf  nahme von Kohlenstoff herbeizuführen. Die  so entstandene Legierung wird dann mecha  nisch bearbeitet.  



  <I>Beispiel 2:</I>  Es werden zunächst     33'/s    Teile Chrom  geschmolzen und diesem 33's Teile Bor und       33's    Teile Silizium zugesetzt. Die drei  Metalle werden unter Ausschluss von Sauer  stoff und Kohlenstoff legiert. Das so     ent-          @tehende        Produkt    weist eine     grobkristallinische         Struktur auf, die durch mechanische Bearbei  tung in ein sehniges, faserförmiges Gefüge  übergeführt wird. Es kann jedoch auch das  Chrom bis auf 5% der Gesamtmischung  verringert werden.  



  Zweckmässig wird für die Ausübung des  Verfahrens der elektrische Schmelzofen ver  wendet. Eine Verdichtung der Legierung  durch     Zentrifugaleinwirkung    ist besonders  vorteilhaft.



  Process for the production of very hard aluminum alloys for tools that are resistant to breakage. The invention relates to a process for the production of very hard metal alloys, which come close to the hardness of the diamond, but do not have the brittleness of the diamond, whereby its resistance to mechanical loading is significantly reduced.



  The process consists in alloying one of the known, technically processable metals with the exclusion of carbon and oxygen with boron and silicon by a melting process and mechanically processing the resulting alloy to further increase the hardness.



  The technically processable metals are in particular iron, tungsten, titanium, chromium, nickel, molybdenum.



  This process enables the production of very hard metal alloys, which can be processed by mechanical processing (rolling, hammering, pressing and the like) and whose hardness properties can be further increased by the processing process. As a result, there are significant advantages of the new product over the products produced by the previously known processes.



  <I> Example </I> Silicon, boron and tungsten are melted down together in a coal crucible lined with tungsten. The metal takes up small amounts of carbon from the crucible, which is removed again by embedding the alloy in metal oxide and high heating. The hollow crucible is lined with tungsten metal in order to reduce the amount of carbon that is absorbed. The resulting alloy is then mechanically processed.



  <I> Example 2: </I> First 33% parts of chromium are melted and 33% parts of boron and 33% parts of silicon are added to this. The three metals are alloyed with the exclusion of oxygen and carbon. The resulting product has a coarse crystalline structure that is converted into a sinewy, fibrous structure by mechanical processing. However, the chromium can also be reduced to 5% of the total mixture.



  The electric melting furnace is expediently used for carrying out the process. A compaction of the alloy by centrifugal action is particularly advantageous.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung sehr harter Metallegierungen, dadurch gekennzeichnet, dass man eines der bekannten, technisch verarbeit- baren Uetalle unter Ausschluss von Kohlen stoff und Sauerstoff mit Bor und Silizium durch einen Schmelzprozess legiert und die so entstandene Legierung zur weitern Erhö hung der Härte mechanisch bearbeitet. <B>UNTERANSPRÜCHE:</B> 1. PATENT CLAIM: Process for the production of very hard metal alloys, characterized in that one of the known, technically processable metals is alloyed with boron and silicon by a melting process with the exclusion of carbon and oxygen, and the resulting alloy is mechanically increased to further increase the hardness processed. <B> SUBClaims: </B> 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dalj der Schmelzprozess in einem Kohletiegel vorgenommen und als dann der von der Legierung aufgenommene Kohlenstoff ausgeschieden wird. 2. Verfahren nach Patentanspruch und Unter anspruch 1, dadurch gekennzeichnet, dass der Kohletiegel mit dem am schwersten schmelzbaren Metalle ausgekleidet ist. Method according to claim, characterized in that the melting process is carried out in a carbon crucible and then the carbon absorbed by the alloy is precipitated. 2. The method according to claim and sub-claim 1, characterized in that the coal crucible is lined with the most difficult-to-melt metals.
CH96341D 1918-12-07 1921-03-30 Process for the production of very hard metal alloys for tools that are resistant to breakage. CH96341A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE335405T 1918-12-07

Publications (1)

Publication Number Publication Date
CH96341A true CH96341A (en) 1922-10-02

Family

ID=6219247

Family Applications (1)

Application Number Title Priority Date Filing Date
CH96341D CH96341A (en) 1918-12-07 1921-03-30 Process for the production of very hard metal alloys for tools that are resistant to breakage.

Country Status (5)

Country Link
AT (1) AT100441B (en)
CH (1) CH96341A (en)
DE (1) DE335405C (en)
DK (1) DK32119C (en)
GB (1) GB157774A (en)

Also Published As

Publication number Publication date
DE335405C (en) 1921-04-01
DK32119C (en) 1923-08-20
GB157774A (en) 1922-04-10
AT100441B (en) 1925-07-10

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