DE904182C - Process for the production of piston rings from sintered iron powder containing graphite - Google Patents

Process for the production of piston rings from sintered iron powder containing graphite

Info

Publication number
DE904182C
DE904182C DEM4817D DEM0004817D DE904182C DE 904182 C DE904182 C DE 904182C DE M4817 D DEM4817 D DE M4817D DE M0004817 D DEM0004817 D DE M0004817D DE 904182 C DE904182 C DE 904182C
Authority
DE
Germany
Prior art keywords
piston rings
production
iron powder
powder containing
containing graphite
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
DEM4817D
Other languages
German (de)
Inventor
Josef Dornauf
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.)
Karl Schmidt GmbH
Original Assignee
Karl Schmidt 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 Karl Schmidt GmbH filed Critical Karl Schmidt GmbH
Priority to DEM4817D priority Critical patent/DE904182C/en
Application granted granted Critical
Publication of DE904182C publication Critical patent/DE904182C/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

Landscapes

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

Description

Verfahren zur Herstellung von Kolbenringen aus gesintertem, graphithaltigem Eisenpulver Es. ist bekannt, Kolbenringe aus gesintertem Eisenpulver herzustellen, dem Graphit od. dgl. vor dem Sintern beigegeben war. Diese Kblbenringe haben zwar gute Gleiteigenschaften, sind , aber der mechanischen Beanspruchung nicht gewachsen, da sie in -der Wärme ihre Spannung verlieren. Es ist versucht worden, die mechanischen Eigenschaften solcher Kolbenringe durch Einsatzhärtung zu verbessern, doch gehört dieses Verfahrene nicht dem Stand der Technik an.Process for the production of piston rings from sintered, graphite-containing Iron powder it. is known to make piston rings from sintered iron powder, was added to the graphite or the like before sintering. These cube rings have good sliding properties, but cannot cope with the mechanical stress, because they lose their tension in the warmth. Attempts have been made to the mechanical Improving the properties of such piston rings through case hardening is one thing this method does not reflect the state of the art.

Die Erfindung besteht nun darin, d!aß man dien gesinterten Werkstoff zu Profildraht walzt oder zieht und diesen Profildraht dann zur Herstellung von Kolbenringen verwendet. Durch den eingeschalteten K'netprozeß erzielt. man eine wesentliche Verbesserung der physikalisch-technologischen Eigenschaften, ähnlich wie sie durch die Einsatzhärtung erzielt werden, jedoch ohne die Laufeigenschaften des Metalls ungünstig zu beeinflussen. Man hat früher schon Profildrähte aus Stahl zur Herstellung von Kolbenringen benrutzt, .doch wiesen diese Kolbenringe sehr schlechte Laufeigenschaften auf, so daß ihre Verwenidung nur in ganz speziellen Fällen möglich war. Die Verwendung von Profildraht gestattet eine äußerst wirtschaftliche Fertigung der gesinterten Kolbenringe.The invention now consists in rolling or drawing the sintered material into profile wire and then using this profile wire to manufacture piston rings. Achieved by the kneading process switched on. there is a substantial improvement in the physical-technological properties, similar to those achieved by case hardening, but without adversely affecting the running properties of the metal. Profile wires made of steel have already been used in the past for the production of piston rings, but these piston rings had very poor running properties, so that their use was only possible in very special cases. The use of profile wire allows extremely economical production of the sintered piston rings.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Kolbenringen aus gesintertem, graphithaltigem Eisenpulver, . dadurch gekennzeichnet, daß die Sinterkärper zu Profildrähten gewalzt bzw. gezogen und zu Kolbenringen weiterverarbeitet werden,PATENT CLAIM: Process for the production of piston rings from sintered, iron powder containing graphite,. characterized in that the sintered bodies become profiled wires rolled or drawn and processed into piston rings,
DEM4817D 1944-03-11 1944-03-11 Process for the production of piston rings from sintered iron powder containing graphite Expired DE904182C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM4817D DE904182C (en) 1944-03-11 1944-03-11 Process for the production of piston rings from sintered iron powder containing graphite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM4817D DE904182C (en) 1944-03-11 1944-03-11 Process for the production of piston rings from sintered iron powder containing graphite

Publications (1)

Publication Number Publication Date
DE904182C true DE904182C (en) 1954-02-15

Family

ID=7292867

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM4817D Expired DE904182C (en) 1944-03-11 1944-03-11 Process for the production of piston rings from sintered iron powder containing graphite

Country Status (1)

Country Link
DE (1) DE904182C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1056439B (en) * 1956-07-20 1959-04-30 Teves Kg Alfred Steel piston ring made of sintered metal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1056439B (en) * 1956-07-20 1959-04-30 Teves Kg Alfred Steel piston ring made of sintered metal

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