FR2427471A1 - Procede pour fabriquer des tiges-poussoirs de soupape pour moteurs a combustion interne ou similaires - Google Patents

Procede pour fabriquer des tiges-poussoirs de soupape pour moteurs a combustion interne ou similaires

Info

Publication number
FR2427471A1
FR2427471A1 FR7816288A FR7816288A FR2427471A1 FR 2427471 A1 FR2427471 A1 FR 2427471A1 FR 7816288 A FR7816288 A FR 7816288A FR 7816288 A FR7816288 A FR 7816288A FR 2427471 A1 FR2427471 A1 FR 2427471A1
Authority
FR
France
Prior art keywords
integral
engine
valve tappet
wear resistance
contact end
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.)
Granted
Application number
FR7816288A
Other languages
English (en)
Other versions
FR2427471B1 (fr
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.)
Miba Sintermetall GmbH
Original Assignee
Miba Sintermetall 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 Miba Sintermetall GmbH filed Critical Miba Sintermetall GmbH
Priority to FR7816288A priority Critical patent/FR2427471A1/fr
Publication of FR2427471A1 publication Critical patent/FR2427471A1/fr
Application granted granted Critical
Publication of FR2427471B1 publication Critical patent/FR2427471B1/fr
Granted 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
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • 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
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

L'invention est relative à un procédé de fabrication de tiges-poussoirs de soupape pour moteurs à combustion interne. Selon l'invention, toute la tige-poussoir de soupape est formée en déversant deux couches de poudre métallique de composition différente dans un moule unique, en comprimant et en frittant ensuite conjointement les deux couches de poudre métallique, qu'on utilise à cet effet, pour la couche anti-usure, un mélange exempt de carbone de fer non-allié et de molybdène non-allié et pour le reste du corps de la tige-poussoir du fer faiblement allié et, que le frittage a lieu à une température pouvant atteindre jusqu'à 1 350 degrés C et que la couche anti-usure est après frittage éventuellement carburée ou trempée par refroidissement brusque et revenu. L'invention permet de multiplier par trois au moins la durée de vie d'une tige de poussoir de soupape par rapport à celles en fonte.
FR7816288A 1978-05-31 1978-05-31 Procede pour fabriquer des tiges-poussoirs de soupape pour moteurs a combustion interne ou similaires Granted FR2427471A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7816288A FR2427471A1 (fr) 1978-05-31 1978-05-31 Procede pour fabriquer des tiges-poussoirs de soupape pour moteurs a combustion interne ou similaires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7816288A FR2427471A1 (fr) 1978-05-31 1978-05-31 Procede pour fabriquer des tiges-poussoirs de soupape pour moteurs a combustion interne ou similaires

Publications (2)

Publication Number Publication Date
FR2427471A1 true FR2427471A1 (fr) 1979-12-28
FR2427471B1 FR2427471B1 (fr) 1982-11-12

Family

ID=9208908

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7816288A Granted FR2427471A1 (fr) 1978-05-31 1978-05-31 Procede pour fabriquer des tiges-poussoirs de soupape pour moteurs a combustion interne ou similaires

Country Status (1)

Country Link
FR (1) FR2427471A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2678533A1 (fr) * 1991-07-02 1993-01-08 Miba Sintermetall Ag Procede pour fabriquer un corps fritte avec au moins une couche d'usure contenant du molybdene.
EP0703350A1 (fr) * 1994-09-21 1996-03-27 Fuji Oozx Inc. Poussoir de moteur à combustion interne et méthode de fabrication

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198182A (en) * 1962-08-17 1965-08-03 Gen Motors Corp Valve lifter
DE2535665A1 (de) * 1975-08-09 1977-02-10 Roland Sintermetall Und Transp Bei hohen temperaturen verschleissfester sinterformkoerper, insbesondere ventilsitzring
US4080205A (en) * 1972-07-13 1978-03-21 Toyota Jidosha Kogyo Kabushiki Kaisha Sintered alloy having wear-resistance at high temperature

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198182A (en) * 1962-08-17 1965-08-03 Gen Motors Corp Valve lifter
US4080205A (en) * 1972-07-13 1978-03-21 Toyota Jidosha Kogyo Kabushiki Kaisha Sintered alloy having wear-resistance at high temperature
DE2535665A1 (de) * 1975-08-09 1977-02-10 Roland Sintermetall Und Transp Bei hohen temperaturen verschleissfester sinterformkoerper, insbesondere ventilsitzring

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2678533A1 (fr) * 1991-07-02 1993-01-08 Miba Sintermetall Ag Procede pour fabriquer un corps fritte avec au moins une couche d'usure contenant du molybdene.
EP0703350A1 (fr) * 1994-09-21 1996-03-27 Fuji Oozx Inc. Poussoir de moteur à combustion interne et méthode de fabrication

Also Published As

Publication number Publication date
FR2427471B1 (fr) 1982-11-12

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