DE903218C - Base material for piston rings to be produced by sintering - Google Patents
Base material for piston rings to be produced by sinteringInfo
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making 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)
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) |
-
1943
- 1943-06-03 DE DET1906D patent/DE903218C/en not_active Expired
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