ES2055200T3 - SINTERED ALLOY RESISTANT TO FRICTION WEAR, ESPECIALLY FOR VALVE SEAT RINGS OF INTERNAL COMBUSTION MACHINES. - Google Patents

SINTERED ALLOY RESISTANT TO FRICTION WEAR, ESPECIALLY FOR VALVE SEAT RINGS OF INTERNAL COMBUSTION MACHINES.

Info

Publication number
ES2055200T3
ES2055200T3 ES90105398T ES90105398T ES2055200T3 ES 2055200 T3 ES2055200 T3 ES 2055200T3 ES 90105398 T ES90105398 T ES 90105398T ES 90105398 T ES90105398 T ES 90105398T ES 2055200 T3 ES2055200 T3 ES 2055200T3
Authority
ES
Spain
Prior art keywords
valve seat
seat rings
internal combustion
sintered alloy
friction wear
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 - Lifetime
Application number
ES90105398T
Other languages
Spanish (es)
Inventor
Kirit Dipl-Ing Dalal
Hans-Jochem Dr Neuhauser
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.)
Goetze GmbH
Original Assignee
Goetze 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6382431&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2055200(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Goetze GmbH filed Critical Goetze GmbH
Application granted granted Critical
Publication of ES2055200T3 publication Critical patent/ES2055200T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C22C33/0207—Using a mixture of prealloyed powders or a master alloy
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • 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
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/22—Valve-seats not provided for in preceding subgroups of this group; Fixing of valve-seats

Landscapes

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

Abstract

ALEACION DE SINTERIZACION, SOBRE TODO PARA LOS ANILLOS DE ASIENTO DE VALVULA QUE SE UTILIZAN EN LOS VEHICULOS ACCIONADOS POR MOTORES DE COMBUSTION, TANTO CON COMBUSTIBLES CON PLOMO COMO SIN EL. CONSISTE EN UNA MATRIZ DE ALEACION DE HIERRO MARTENSITICO, CON UN 5 A 20 % EN PESO DE INCLUSIONES DE FASES INTERMETALICAS DURAS. SE HA COMPROBADO QUE ESTA ALEACION DE SINTERIZACION ES RESISTENTE DURANTE LARGO TIEMPO AL DESGASTE Y A LA CORROSION FRENTE A LOS DOS TIPOS DE COMBUSTIBLE. LA MEZCLA PULVERULENTA DE PARTIDA ES BARATA Y POSEE UNAS BUENAS CARACTERISTICAS DE FLUIDEZ Y DE COMPRESIBILIDAD, PUDIENDO SER COMPRIMIDA Y SINTERIZADA CON GRAN PRECISION DE FORMA, POR LO QUE, DESDE EL PUNTO DE VISTA ECONOMICO, PUEDE INCLUIRSE EN LA PRODUCCION MASIVA DE PIEZAS.SINTERING ALLOY, ESPECIALLY FOR VALVE SEAT RINGS FOR USE IN VEHICLES DRIVEN BY COMBUSTION ENGINES, BOTH WITH LEADED FUELS AND WITHOUT IT. IT CONSISTS OF A MARTENSITIC IRON ALLOY MATRIX, WITH A 5 TO 20% BY WEIGHT OF INCLUSIONS OF HARD INTERMETAL PHASES. THIS SINTERING ALLOY HAS BEEN PROVEN TO BE RESISTANT FOR A LONG TIME TO WEAR AND CORROSION AGAINST THE TWO TYPES OF FUEL. THE STARTING POWDER BLEND IS CHEAP AND HAS GOOD CHARACTERISTICS OF FLUIDITY AND COMPRESSIBILITY, MAY BE COMPRESSED AND SINTERED WITH GREAT PRECISION IN WAY, SO IT CAN BE INCLUDED IN THE PRODUCTION POINT.

ES90105398T 1989-06-09 1990-03-22 SINTERED ALLOY RESISTANT TO FRICTION WEAR, ESPECIALLY FOR VALVE SEAT RINGS OF INTERNAL COMBUSTION MACHINES. Expired - Lifetime ES2055200T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3918875 1989-06-09

Publications (1)

Publication Number Publication Date
ES2055200T3 true ES2055200T3 (en) 1994-08-16

Family

ID=6382431

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90105398T Expired - Lifetime ES2055200T3 (en) 1989-06-09 1990-03-22 SINTERED ALLOY RESISTANT TO FRICTION WEAR, ESPECIALLY FOR VALVE SEAT RINGS OF INTERNAL COMBUSTION MACHINES.

Country Status (3)

Country Link
EP (1) EP0401482B1 (en)
DE (1) DE59006107D1 (en)
ES (1) ES2055200T3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2698808B1 (en) * 1992-12-07 1995-01-20 Renault Material for friction parts operating in a lubricated medium, and process for obtaining it.
JP3011076B2 (en) * 1995-10-31 2000-02-21 トヨタ自動車株式会社 Cylinder head of internal combustion engine
JP3346321B2 (en) * 1999-02-04 2002-11-18 三菱マテリアル株式会社 High strength Fe-based sintered valve seat
GB0105721D0 (en) * 2001-03-08 2001-04-25 Federal Mogul Sintered Prod Sintered ferrous materials
CN103357863B (en) * 2013-06-21 2016-12-28 安徽吉思特智能装备有限公司 A kind of High abrasion resistant metallurgy valve seat and preparation method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4123265A (en) * 1974-02-21 1978-10-31 Nippon Piston Ring Co., Ltd. Method of producing ferrous sintered alloy of improved wear resistance
JPS56249A (en) * 1979-06-13 1981-01-06 Mazda Motor Corp Hard-grain-dispersed sintered alloy for valve seat
JPS5925959A (en) * 1982-07-28 1984-02-10 Nippon Piston Ring Co Ltd Valve seat made of sintered alloy
JPS5985847A (en) * 1982-11-08 1984-05-17 Mitsubishi Metal Corp Fe-base sintered material for sliding member of internal-combustion engine

Also Published As

Publication number Publication date
EP0401482A2 (en) 1990-12-12
DE59006107D1 (en) 1994-07-21
EP0401482A3 (en) 1991-05-02
EP0401482B1 (en) 1994-06-15

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