DE903218C - Base material for piston rings to be produced by sintering - Google Patents

Base material for piston rings to be produced by sintering

Info

Publication number
DE903218C
DE903218C DET1906D DET0001906D DE903218C DE 903218 C DE903218 C DE 903218C DE T1906 D DET1906 D DE T1906D DE T0001906 D DET0001906 D DE T0001906D DE 903218 C DE903218 C DE 903218C
Authority
DE
Germany
Prior art keywords
sintering
piston rings
produced
base material
iron
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
DET1906D
Other languages
German (de)
Inventor
Dr Bruno Kehl
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.)
Continental Teves AG and Co oHG
Original Assignee
Alfred Teves 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 Alfred Teves GmbH filed Critical Alfred Teves GmbH
Priority to DET1906D priority Critical patent/DE903218C/en
Application granted granted Critical
Publication of DE903218C publication Critical patent/DE903218C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C33/00Making ferrous alloys
    • C22C33/02Making ferrous alloys by powder metallurgy
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00Making metallic powder or suspensions thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Description

Ausgangswerkstoff für durch Sintern herzustellende Kolbenringe Kolbenringe aus reinem Sintereisen sind bekanntlich infolge der niedrigen Streckgrenze des reinen Sintereisens nicht brauchbar. Es wurdle bereits Norgeschlagen, das Sinbereisen aufzukohlen. Durch Aufkohlung wird bei Raumtemperatur die Streckgrenze so weit erhöht, da:ß eine Verbesserung der Spannungshaltung des Ringes erreicht wird. Es 'hat sich aber herawsigestellit, diaß bei 'höheren Temperaturen, die im Verbrennungsmotor am Kolben auftreten, die Span@nungs'haltung auch solcher Ringe nicht genügt.Base material for piston rings to be produced by sintering Piston rings from pure sintered iron are known to be due to the low yield strength of the pure Sintered iron not usable. It has already been suggested to carburize the journey to Sin. Carburization increases the yield point at room temperature to such an extent that: ß a Improvement of the voltage maintenance of the ring is achieved. But it has emerged diaß at 'higher temperatures that occur in the internal combustion engine at the piston, the Tension maintenance is not enough even for such rings.

Erfindungsgemäß wird. daher vorgeschlagen, das Sintereisen zu legieren. Dafür kommt vor allem Silizium, Molybdän und Chrom in Frage, doch bewirken auch andere Metalle eine Erhöhung der Streckgrenze in der Wärme. Es ist nun aber nicht mägl,ich, durch an sich bekanntes Mischen versehiedener Metallpulver zu einer Liegierung zu kommen, die zu einer Erhöhung der Warmstreckgrenze führt, dia die einzelnen Pul- verteilchen der Mischung sich nicht ausreichend miteinander verbinden. Zum Erreichen dieses Zweckes wird vi,elme)h@r crfi@ndungsgemäß die Legierung im Schmelzfluß 'hergestellt.According to the invention. therefore proposed to alloy the sintered iron. Silicon, molybdenum and chromium are particularly suitable for this, but other metals also cause an increase in the yield point in the heat. However, it is now not possible, by mixing different metal powders, known per se, to arrive at an alloy that leads to an increase in the hot yield strength because the individual powder particles in the mixture do not bond with one another sufficiently. To achieve this purpose, the alloy is produced in accordance with the melt flow process.

Es isst bekanntlich sehr einfach, Eisen mit den obengenannten Metallen zu legieren. Durch Zerkleinerung des legierten Eisens, vollkommene Oxydation des Pulvers und' durch Reduktion mit Wasserstoff oder Kohlenoxyd oder einem Gemisch beider bei Temperaturen zweckmäßig unter 700° erhält man ein Pulver, das sich sehr gut sintern läßt. Die daraus hergestellten Kolbenringe 'haben eine gute Spannungshaltung im Verbrennungsmotor und auch eine viel, bessere Verschleißfestigkeit als Kolbenringe, die aus reinem Sintereisen durch Aufköhlung erhalten werden. Der legierte Kolbenring kann gleichzeitig mit. oder auch mach dem Sintern . aufgekohlt werden; dabei ist allerdings zu beachten, daß die Aufkohlung nur sehr milde vorgenommen wird, damit keime Karbidie in dem Eisen entstehen. Es wird dadurch erreicht, daB die Zylinderlaufbüchse ebenfalls nur eine sehr geringe Abnutzung erfährt.It is well known that it is very easy to eat iron with the above metals to alloy. By crushing the alloyed iron, complete oxidation of the Powder and 'by reduction with hydrogen or carbon oxide or a mixture Both at temperatures expediently below 700 ° one obtains a powder that is very sintered well. The piston rings made from it have a good one Voltage maintenance in the internal combustion engine and also a much, better wear resistance than piston rings, obtained from pure sintered iron by charring. The alloy piston ring can be simultaneous with. or do the sintering. to be carburized; is there However, it should be noted that the carburization is only carried out very mildly, so germs of carbide in which iron are formed. It is achieved by the cylinder liner also only experiences very little wear.

Claims (3)

PATENTANSPRÜCHE: z. Die Verwendüng eines Pulvers, welches aus einer im Schmelzfluß gewonnernen Legierung von Eisen mit anderen Metallen oder mit Metal.loiden, beispielsweise mit Silizium, Molyb dän od ier Chrom, hergestellt ist, als. Ausgangswerkstoff für durch: Sintern herzusbellenide Kolbenringe. PATENT CLAIMS: e.g. The use of a powder made from a alloy of iron with other metals or with metalloids obtained in the melt flow, for example with silicon, molybdenum or chromium, is made than. Base material for piston rings produced by: sintering. 2. Verfahren zum Heratelllen des gemäß Anspruch i zu verwendenden Sinterpulvers, dadurch gekennzeichnet, diaß Idas legierte Eisen zerkleinert, oxydiert, reduziert und gemahlen wird. 2. Method of Heratelllen the Sintering powder to be used according to claim i, characterized in that the Idas alloyed iron is crushed, oxidized, reduced and ground. 3. Verfahren zur BehandhIng von Kolbenringen bei oder nach ihrer Herstellung aus dem im Anspruch i oder a genannten Sinterpulier, dadurch gekennzeichnet, daß diiie Kolbenringe gleichzeitig mit dem Sintern oder nach dem Sintern aufgeko$l:tj werden.3. Procedure for the treatment of piston rings during or after their production from the claim sintered pulp called i or a, characterized in that the piston rings simultaneously with sintering or after sintering.
DET1906D 1943-06-03 1943-06-03 Base material for piston rings to be produced by sintering Expired DE903218C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET1906D DE903218C (en) 1943-06-03 1943-06-03 Base material for piston rings to be produced by sintering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET1906D DE903218C (en) 1943-06-03 1943-06-03 Base material for piston rings to be produced by sintering

Publications (1)

Publication Number Publication Date
DE903218C true DE903218C (en) 1954-02-04

Family

ID=7543597

Family Applications (1)

Application Number Title Priority Date Filing Date
DET1906D Expired DE903218C (en) 1943-06-03 1943-06-03 Base material for piston rings to be produced by sintering

Country Status (1)

Country Link
DE (1) DE903218C (en)

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