CH318954A - Process for the production of machine parts subject to sliding friction, in particular cylinder liners - Google Patents

Process for the production of machine parts subject to sliding friction, in particular cylinder liners

Info

Publication number
CH318954A
CH318954A CH318954DA CH318954A CH 318954 A CH318954 A CH 318954A CH 318954D A CH318954D A CH 318954DA CH 318954 A CH318954 A CH 318954A
Authority
CH
Switzerland
Prior art keywords
production
machine parts
sliding friction
cylinder liners
parts subject
Prior art date
Application number
Other languages
German (de)
Inventor
Buettinghaus Alfred Ing Dr
Dammer August
Original Assignee
Gussstahlwerk Witten Aktienges
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 Gussstahlwerk Witten Aktienges filed Critical Gussstahlwerk Witten Aktienges
Publication of CH318954A publication Critical patent/CH318954A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C37/00Cast-iron alloys
    • C22C37/10Cast-iron alloys containing aluminium or silicon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Description

       

  Verfahren zur Herstellung von bei gleitender Reibung beanspruchten     Maschinenteilen,    .  insbesondere Zylinderlauf     büchsen       Es     isst    bekannt, für bei gleitender Reibung  beanspruchte Teile, wie     Zylinderlaufbüch..     sei,     Gusseisen-Sonderlegierungen    zu verwen  den. Es     ist    auch versucht worden, die     Lebens-          dauer    solcher     Teile    durch Erhöhung der Härte  an den Gleitflächen zu     verlängern.     



  Gegenstand vorliegender Erfindung ist ein       Verfahren,        welches    es     gestattet,        besonders     hochwertige Teile dieser     Art        herzustellen.    Ge  mäss der Erfindung werden aus     Eisen-Kohlen-          stoff-Legierungen,    die 0,8     bis        3,01/o    C, 0,1 bis  1.,50/a     AIn,    0,2 bis     31/o    A1 enthalten,     durch          Warmverformen    die Teile     hergestellt,

      die von  Temperaturen oberhalb der     A3    Umwandelung       beschleunigt        abgekühlt    und     zur        Wiederaus-          fällung    von Graphit     angelassen,    und sodann  an den     Gleitflächen        nitriert.    Die Bearbeitung       erfolgt        vorzugsweise        zwischen    dem     Anlasen          und    dem Nitrieren, da der     Stahl    sich dann  etwa wie ein     Automatenstahl    verhält.  



  Das beschleunigte Abkühlen von Tempe  raturen oberhalb der     A3-Umwandlung    wird       vorzugsweise        in    Luft oder Öl vorgenommen.  



  Nach dem Nitrieren liegt eine Oberflächen  härte von     mindestens    750     Vickers-Einheiten     vor. Die     Nitrierschicht        ist    ausserordentlich       widerstandsfähig,    sie bröckelt nicht aus,     und.     die Teile besitzen neben hoher Verschleiss  festigkeit     gute        Gleiteigenschaften,    insbeson  dere     Notlaufeigenschaften.       Die     guten    Lauf- und     Verschleisseigenschaf-          ten    wirken.

   sieh besonders aus bei     Zylinder-          büchsen,    z. B. für     Dieselmotoren,    Schnecken  rädern,     Führungsleisten,        Spinnringen    und  dergleichen.  



  Die dem Verfahren     mz    unterziehenden     Le-          gierungen    können auch etwa folgende Bestand  teile enthalten:         0,8        bis        3,01/0    C  1     bis        zu        1,5        %        Mn          0,2        bis    2     %        Si          0,

  2        bis    3     %        Al       Die vorher genannten     Legierungsgruppen     können ausserdem mit     Molybdän    bzw.     Vanachn     zur Erhöhung .der Festigkeit bzw. Streck-     4s     grenze     legiert    sein.



  Process for the production of machine parts subjected to sliding friction,. In particular, cylinder liners It is known to use special cast iron alloys for parts subject to sliding friction, such as cylinder liner. Attempts have also been made to extend the service life of such parts by increasing the hardness on the sliding surfaces.



  The subject matter of the present invention is a method which makes it possible to produce particularly high-quality parts of this type. According to the invention, iron-carbon alloys which contain 0.8 to 3.01 / o C, 0.1 to 1, 50 / a Al, 0.2 to 31 / o Al are made by hot working the parts made,

      which is cooled down accelerated from temperatures above the A3 transformation and tempered for the re-precipitation of graphite, and then nitrided on the sliding surfaces. The machining is preferably carried out between the annealing and the nitriding, since the steel then behaves roughly like a free-cutting steel.



  The accelerated cooling from temperatures above the A3 conversion is preferably carried out in air or oil.



  After nitriding, the surface hardness is at least 750 Vickers units. The nitride layer is extremely resistant, it does not crumble, and. In addition to high wear resistance, the parts have good sliding properties, in particular emergency running properties. The good running and wear properties are effective.

   look particularly at cylinder liners, e.g. B. for diesel engines, worm wheels, guide strips, spinning rings and the like.



  The alloys subject to the mz process can also contain the following components: 0.8 to 3.01 / 0 C 1 up to 1.5% Mn 0.2 to 2% Si 0,

  2 to 3% Al The aforementioned alloy groups can also be alloyed with molybdenum or Vanachn to increase the strength or yield strength.


    

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung von bei gleiten der Reibung beanspruchten Maschinenteilen, dadurch gekennzeichnet, dass aus einer Eisen Kohlenstoff-Legierung, welche 0,8 bis 3,00/0 C 0,1 bis 1,5 % Mn 0,2 bis 3 0/a Al enthält, die Teile durch Warmverformung hergestellt, PATENT CLAIM Process for the production of machine parts subject to friction when sliding, characterized in that an iron-carbon alloy containing 0.8 to 3.00 / 0 C 0.1 to 1.5% Mn 0.2 to 3 0 / a contains Al, the parts are produced by hot forming, diese von Temperaturen oberhalb der A3-UmwandIuig beschleunigt, abgekühlt, zur Wiederausscheidung von Graphit angelas sen, schliesslich an der Gleitfläche nitriert werden. <B>UNTER-ANSPRÜCHE</B> 1. these are accelerated by temperatures above the A3 conversion, cooled, tempered for the re-precipitation of graphite, and finally nitrided on the sliding surface. <B> SUB-CLAIMS </B> 1. Verfahren nach Patentanspruch, da durch gekennzeichnet, dass eine Eisen-Kohlen- stoff-Legierung verwendet wird, welche 0,8 biss 3,0 % C 1 bis zu 1,5 0/0 Mn 0,2 bis 2 % Si 0,2 biss 3 0/a Al enthält. 2. Method according to patent claim, characterized in that an iron-carbon alloy is used which contains 0.8 to 3.0% C 1 up to 1.5% Mn 0.2 to 2% Si 0.2 up to 3 0 / a contains Al. 2. Verfahren nach Unteranspruch 1, da durch gekennzeichnet, dass eine Eisen-Kohlen- stoff-Legieimng verwendet wird, die zusätz- lich Molybdän enthält. 3. Verfahren nach Unteranspruch 1, da durch gekennzeichnet, dass eine Eisen-Kohlen- stoff-Legierung verwendet wird, die zwsätz- lieh Vanadin enthält. Method according to dependent claim 1, characterized in that an iron-carbon alloy is used which also contains molybdenum. 3. The method according to dependent claim 1, characterized in that an iron-carbon alloy is used which contains two borrowed vanadium.
CH318954D 1953-01-15 1953-10-29 Process for the production of machine parts subject to sliding friction, in particular cylinder liners CH318954A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE318954X 1953-01-15

Publications (1)

Publication Number Publication Date
CH318954A true CH318954A (en) 1957-01-31

Family

ID=6151340

Family Applications (1)

Application Number Title Priority Date Filing Date
CH318954D CH318954A (en) 1953-01-15 1953-10-29 Process for the production of machine parts subject to sliding friction, in particular cylinder liners

Country Status (1)

Country Link
CH (1) CH318954A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010108528A1 (en) * 2009-03-26 2010-09-30 Federal-Mogul Burscheid Gmbh Nitratable steel material composition for producing piston rings and cylindrical sleeves

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010108528A1 (en) * 2009-03-26 2010-09-30 Federal-Mogul Burscheid Gmbh Nitratable steel material composition for producing piston rings and cylindrical sleeves
US8317938B2 (en) 2009-03-26 2012-11-27 Federal-Mogul Burscheid Gmbh Nitratable steel material composition for producing piston rings and cylindrical sleeves

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