CH318947A - Synthetic bearing stone for precision mechanical devices - Google Patents

Synthetic bearing stone for precision mechanical devices

Info

Publication number
CH318947A
CH318947A CH318947DA CH318947A CH 318947 A CH318947 A CH 318947A CH 318947D A CH318947D A CH 318947DA CH 318947 A CH318947 A CH 318947A
Authority
CH
Switzerland
Prior art keywords
bearing
stone
hole
corundum
mechanical devices
Prior art date
Application number
Other languages
German (de)
Inventor
Bas-Taymaz Enis
Held Fritz
Original Assignee
Foerderung Forschung Gmbh
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 Foerderung Forschung Gmbh filed Critical Foerderung Forschung Gmbh
Publication of CH318947A publication Critical patent/CH318947A/en

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
    • G04B31/06—Manufacture or mounting processes
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
    • C30B29/10—Inorganic compounds or compositions
    • C30B29/16—Oxides
    • C30B29/22—Complex oxides
    • C30B29/26—Complex oxides with formula BMe2O4, wherein B is Mg, Ni, Co, Al, Zn, or Cd and Me is Fe, Ga, Sc, Cr, Co, or Al

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Sliding-Contact Bearings (AREA)

Description

  

  Synthetischer     Lagerstein    für feinmechanische Geräte    Die     Erfindung    betrifft einen synthetischen       Lagerstein.    für feinmechanische Geräte.  



  Es     ist        bekannt,    dass weisse Lagersteine aus       Reinkorund    gegenüber rotgefärbten, als     Rubis     bezeichneten Steinen bezüglich ihrer Eigen  schaften und damit auch bezüglich     Eignung     als     Lagermaterial        Vorteile    aufweisen.     Diese     Vorteile wirken sieh vor allem     aus    bei ver  hältnismässig hohen Lagerdrücken, wie z. B.  bei elektrischen Zählern, wo praktisch nur  weisse     Korundsteine    verwendet werden.

   Bei  den Uhren hingegen werden, vor allem aus  dekorativen Gründen, vorzugsweise rotgefärbte  Steine, sog.     Rubis,    verwendet. Als Lagermate  rial     hätte    aber auch hier der weisse reine       Korund:,    grundsätzlich     bessere    Eigenschaften.  



  Die vorliegende     Erfindung    betrifft nun  einen synthetischen Lagerstein für die     genann          ten    Zwecke, der sieh dadurch auszeichnet,       dass    er zwei Zonen     aufweist,    von denen die  eine,     die    innere Lagerzone, aus weissem Rein       korund    und .die andere, die äussere Zone,     aus     rotgefärbtem     Korund    (Rubin) besteht..  



  Das     erfindungsgemässe    Verfahren zur     Her-          stellung    des     synthetischen        Lagersteins        besteht.     darin,     da.ss    durch     örtliche    thermische Behand  lung     des        Stein!loche    das     Chromoxyd    durch  Diffusion     entfernt    wird..

   Die Entfernung des  Chromoxyds,     dass    heisst die Herstellung der  weissen Lagerzone in einem rotgefärbten       Lagerstein    (Rubin), kann auf verschiedene         Art    und     Weise    durchgeführt werden. So kann  die     Reinkorundzone    durch Erhitzen vermittels  eines     in    das     Steinloch    eingeführten Heiz  drahtes, z. B. aus Wolfram oder     Tantal,    erfol  gen, oder es kann die thermische     Behandlung     des     Steinloches    durch die kinetische Energie  eines     Elektronenstrahls    durchgeführt werden.

    Schliesslich kann auch, ausgehend von einem  urigebohrten, rotgefärbten     Lagerstein,    beim  Bohren dies Lagerloches durch     einen.    Elektro  nenstrahl     dieser    so     gesteuert    werden,     d'ass    zu  gleich die Herstellung des     Lagerloches    und der  weissen,     innern    Lagerzone     .aus        Reinkorund    er  folgt.

   Für den zum     Bohren    des     Lagerloches     und der weissen Lagerzone dienenden     Elektro-          nenstralil    kann hierbei     zweckmässigerweise     eine Einrichtung     verwendet    werden nach dem  Schweizer Patent Nr. 309700.



  Synthetic Bearing Block for Precision Mechanical Devices The invention relates to a synthetic bearing block. for precision mechanical devices.



  It is known that white bearing stones made of pure corundum have advantages over red-colored stones called rubis with regard to their properties and thus also with regard to their suitability as a bearing material. These advantages are particularly effective at relatively high bearing pressures such. B. in electrical meters, where practically only white corundum stones are used.

   In the case of clocks, however, red-colored stones, so-called rubis, are preferably used, mainly for decorative reasons. As a storage material, however, the pure white corundum would have fundamentally better properties.



  The present invention relates to a synthetic bearing stone for the purposes mentioned, which is characterized in that it has two zones, one of which, the inner bearing zone, made of pure white corundum and the other, the outer zone, of red-colored corundum (Ruby) consists ...



  The method according to the invention for producing the synthetic bearing block consists. in that the chromium oxide is removed by diffusion through local thermal treatment of the stone!

   The removal of the chromium oxide, i.e. the production of the white bearing zone in a red-colored bearing stone (ruby), can be carried out in various ways. Thus, the pure corundum zone can be heated by means of a heating wire introduced into the stone hole, eg. B. made of tungsten or tantalum, success gene, or the thermal treatment of the stone hole can be carried out by the kinetic energy of an electron beam.

    Finally, starting from an originally drilled, red-colored bearing stone, when drilling this bearing hole through a. This electron beam is controlled in such a way that the bearing hole and the white inner bearing zone are made from pure corundum at the same time.

   A device according to Swiss patent no. 309700 can expediently be used for the electron beam used to drill the bearing hole and the white bearing zone.

Claims (1)

PATENTANSPRÜCHE I. Synthetischer Lagerstein für feinmeeha- nische Geräte, dadurch gekennzeichnet, dass er zwei Zonen aufweist, von denen die eine, die innere Lagerzone, aus weissem Reinkorund und die andere, die äussere Zone, aus rotge färbtem Korund besteht. II. Verfahren zur Herstellung des Lager steines nach Patentanspruch I, dadurch ge kennzeichnet, PATENT CLAIMS I. Synthetic bearing stone for fine mechanical devices, characterized in that it has two zones, one of which, the inner bearing zone, consists of pure white corundum and the other, the outer zone, consists of red-colored corundum. II. A method for producing the bearing block according to claim I, characterized in that d@ass durch örtliche thermische Behandlung des Steinloches das Chromoxyd durch Diffusion entfernt wird. UNTERANSPRÜCHE 1. Verfahren nach Patentanspruch II, ge- kennzeichnet durch Erhitzung vermittels eines in das Steinloch eingeführten Heizdrahtes. that the chromium oxide is removed by diffusion through local thermal treatment of the stone hole. SUBClaims 1. Method according to claim II, characterized by heating by means of a heating wire introduced into the stone hole. 2. Verfahren nach Patentanspruch 1I, da durch gekennzeichnet, dass die thermische Be handlung durch die kinetische Energie eines Elektronenstrahls erfolgt. 3. 2. The method according to claim 1I, characterized in that the thermal treatment is carried out by the kinetic energy of an electron beam. 3. Verfahren nach Patentanspruch II, da durch gekennzeichnet, dass beim Bohren des Lagerloches durch Elektronenstrahlen diese so gesteuert werden, da.ss ziläleich die Herstellung des Loches und der weissen Lagerzone aus Reinkorund erfolgt. Method according to claim II, characterized in that when the bearing hole is bored by electron beams, these are controlled in such a way that the hole and the white bearing zone are made from pure corundum at the same time.
CH318947D 1954-01-16 1954-01-16 Synthetic bearing stone for precision mechanical devices CH318947A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH318947T 1954-01-16
CH946499X 1954-01-16

Publications (1)

Publication Number Publication Date
CH318947A true CH318947A (en) 1957-01-31

Family

ID=61010854

Family Applications (1)

Application Number Title Priority Date Filing Date
CH318947D CH318947A (en) 1954-01-16 1954-01-16 Synthetic bearing stone for precision mechanical devices

Country Status (2)

Country Link
CH (1) CH318947A (en)
DE (1) DE946499C (en)

Also Published As

Publication number Publication date
DE946499C (en) 1956-08-02

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