DE878502C - Process for improving the running properties of piston rings sintered and carburized from iron powder - Google Patents

Process for improving the running properties of piston rings sintered and carburized from iron powder

Info

Publication number
DE878502C
DE878502C DET1903D DET0001903D DE878502C DE 878502 C DE878502 C DE 878502C DE T1903 D DET1903 D DE T1903D DE T0001903 D DET0001903 D DE T0001903D DE 878502 C DE878502 C DE 878502C
Authority
DE
Germany
Prior art keywords
improving
sintered
iron powder
carburized
piston rings
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
DET1903D
Other languages
German (de)
Inventor
Carl Dr Englisch
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 DET1903D priority Critical patent/DE878502C/en
Application granted granted Critical
Publication of DE878502C publication Critical patent/DE878502C/en
Expired legal-status Critical Current

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
    • 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
    • C21D3/00—Diffusion processes for extraction of non-metals; Furnaces therefor
    • C21D3/02—Extraction of non-metals
    • C21D3/04—Decarburising

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Powder Metallurgy (AREA)

Description

Verfahren zur Verbesserung der Laufeigenschaften von aus Eisenpulver gesinterten und aufgekohlten Kolbenringen Die Erfindung bezieht sich auf die Herstellung von Kolbenringen aus Metallpulver auf dem Wege der Sinterung. Es ist bereits vorgeschlagen worden, die Preßlinge einer Einsatzbehandlung zu unterziehen, um durch Aufkohlung des Eisenpulvers eine nachfolgende Härtung zu ermöglichen, die dem Kolbenyin:- stahlähnliche elastische Eigenschaften verleihen soll. Die Aufkohlung kann dabei in einem Grad erfolgen, die den. Anforderungen an die Gleiteigenschaften, die an einen Kolbenring gestellt werden müssen, zuwiderlaufen. Erfindungsgemäß wird der vorbehandelte und gehärtete Ring an den Laufflächen einem Entkoblungsvorgang unterworfen, beispielsweise durch Erwärmung durch einen Brenner oder durch kurzzeitiges Hindurchführen durch einen Ofen, beides in oxydierender Atmosphäre.Process for improving the running properties of iron powder Sintered and Carburized Piston Rings The invention relates to manufacture of piston rings made of metal powder by means of sintering. It's already suggested has been to subject the compacts to insert treatment by carburizing of the iron powder to enable a subsequent hardening, which the piston yin: - steel-like to give elastic properties. The carburization can be in one degree take place that the. Requirements for the sliding properties of a piston ring must be made contrary. According to the pretreated and hardened ring subjected to a decobing process on the running surfaces, for example by heating with a burner or by briefly passing it through an oven, both in an oxidizing atmosphere.

Claims (1)

PATENTANSPRUCH: Verfahren zur Verbesserung der Laufeigenschaften von aus Eisenpulver gesinterten und zum Zweck der Erzielung genügend elastischer Eigenschaften hoch aufgekohlten Kolbenringen, dadurch gekennzeichnet, @daß der Kohlenstoffgehalt an ,der Lauffläche durch eine oxydierende Wärmebehandlung bis zur Erzielung günstiger Lauf- und Verschleißeigenschaften gesenkt wird.PATENT CLAIM: Process for improving the running properties of sintered from iron powder and for the purpose of achieving sufficiently elastic properties highly carburized piston rings, characterized in that the carbon content on, the tread is cheaper by means of an oxidizing heat treatment until it is achieved Running and wear properties is reduced.
DET1903D 1943-03-28 1943-03-28 Process for improving the running properties of piston rings sintered and carburized from iron powder Expired DE878502C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET1903D DE878502C (en) 1943-03-28 1943-03-28 Process for improving the running properties of piston rings sintered and carburized from iron powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET1903D DE878502C (en) 1943-03-28 1943-03-28 Process for improving the running properties of piston rings sintered and carburized from iron powder

Publications (1)

Publication Number Publication Date
DE878502C true DE878502C (en) 1953-06-05

Family

ID=7543595

Family Applications (1)

Application Number Title Priority Date Filing Date
DET1903D Expired DE878502C (en) 1943-03-28 1943-03-28 Process for improving the running properties of piston rings sintered and carburized from iron powder

Country Status (1)

Country Link
DE (1) DE878502C (en)

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