EP0597832A1 - Melange de poudre metallique. - Google Patents

Melange de poudre metallique.

Info

Publication number
EP0597832A1
EP0597832A1 EP90914132A EP90914132A EP0597832A1 EP 0597832 A1 EP0597832 A1 EP 0597832A1 EP 90914132 A EP90914132 A EP 90914132A EP 90914132 A EP90914132 A EP 90914132A EP 0597832 A1 EP0597832 A1 EP 0597832A1
Authority
EP
European Patent Office
Prior art keywords
metal powder
powder mixture
graphite
metal
max
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
EP90914132A
Other languages
German (de)
English (en)
Other versions
EP0597832B1 (fr
Inventor
Norbert Dautzenberg
Heinz Josef Dorweiler
Karl-Heinz Lindner
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Publication of EP0597832A1 publication Critical patent/EP0597832A1/fr
Application granted granted Critical
Publication of EP0597832B1 publication Critical patent/EP0597832B1/fr
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
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0264—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5%

Definitions

  • the invention relates to a metal powder mixture for production
  • high-strength sintered parts are used to form parts with
  • a steel alloy powder for production is known from EP 0 136 169 B1
  • This alloy powder should be cheap to manufacture and process, have good pressing properties and high strength in
  • the object of the invention is to provide a metal powder mixture which can be produced with as little effort as possible and which permits the production of high-strength and wear-resistant sintered parts whose
  • the metal powder should therefore have the property of not causing any appreciable shrinkage or waxing when sintering compacts produced therefrom with conventional compaction.
  • steel alloy powder is not intended to introduce the Cu portion into the alloy used for atomization, but to mix it with the steel powder in finely divided form.
  • the proportions of the individual alloy elements are kept in different limits than in the known steel powder. It is particularly important that the ratio of the proportion of Cu to the proportion of graphite also introduced in powder form as carbon in the metal powder mixture is kept in the range 1.4-2.5, preferably 2.0.
  • a steel powder was produced by water atomization of a melt with the following composition (% by weight):
  • this steel powder was dried and subjected to a reduction annealing in an H 2 atmosphere at about 1000 ° C. After cooling, the resulting agglomerate was ground in fine particles.
  • the residual oxygen content of the steel powder was about 0.15%, its bulk density was about 3 g / cm.
  • Metal powder mixture was a double press and sintering technique with the
  • Costly vacuum annealing such as is necessary for other fully alloyed water atomized metal powders for the same purpose, can be omitted.
  • the inexpensive manufacture is

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)

Abstract

La présente invention a pour but de décrire un mélange de poudre métallique pouvant être fabriqué avec peu d'efforts et permettant la fabrication d'éléments de cylindre à résistance élevée et résistant à l'usure, avec de faibles variations dimensionnelles. Ce mélange de poudre métallique consiste en une poudre d'acier provenant d'une atomisation d'un bain de fusion, lequel est mélangé avec 0,3 à 0,7 % en poids de graphite, la poudre d'alliage d'acier consistant en (% en poids): max. 0,02 % C; max. 0,03 % Si; 0,05-0,25 % Mn; 2,5-5,0 % Ni; 0,2-1,5 % Mo, le solde en fer et impuretés usuelles, et le mélange contenant du Cu en particules fines dans une quantité de 0,7 à 1,5 %, à condition étant que le rapport des ingrédients Cu:graphite soit compris entre 1,4 et 2,5.
EP90914132A 1990-01-19 1990-09-28 Melange de poudre metallique Expired - Lifetime EP0597832B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4001900A DE4001900A1 (de) 1990-01-19 1990-01-19 Metallpulvermischung
DE4001900 1990-01-19
PCT/DE1990/000751 WO1991010753A1 (fr) 1990-01-19 1990-09-28 Melange de poudre metallique

Publications (2)

Publication Number Publication Date
EP0597832A1 true EP0597832A1 (fr) 1994-05-25
EP0597832B1 EP0597832B1 (fr) 1995-06-28

Family

ID=6398606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90914132A Expired - Lifetime EP0597832B1 (fr) 1990-01-19 1990-09-28 Melange de poudre metallique

Country Status (6)

Country Link
EP (1) EP0597832B1 (fr)
JP (1) JP2908018B2 (fr)
AT (1) ATE124467T1 (fr)
CA (1) CA2074193C (fr)
DE (2) DE4001900A1 (fr)
WO (1) WO1991010753A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0203135D0 (sv) * 2002-10-23 2002-10-23 Hoeganaes Ab Dimensional control

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1298614A (fr) * 1961-08-08 1962-07-13 Mannesmann Ag Procédé pour la fabrication de corps pressés frittés
DE1207634B (de) * 1961-11-30 1965-12-23 Birmingham Small Arms Co Ltd Pulvermischung zur Herstellung von Stahlgegenstaenden nach bekannten pulvermetallurgischen Verfahren
GB1162702A (en) * 1965-09-14 1969-08-27 Hoganas Billesholms Ab Low Alloy Iron Powder and process of preparing the same
GB1305608A (fr) * 1970-03-18 1973-02-07
US4170474A (en) * 1978-10-23 1979-10-09 Pitney-Bowes Powder metal composition
JPS6075501A (ja) * 1983-09-29 1985-04-27 Kawasaki Steel Corp 高強度焼結部品用の合金鋼粉

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9110753A1 *

Also Published As

Publication number Publication date
EP0597832B1 (fr) 1995-06-28
DE4001900A1 (de) 1991-07-25
CA2074193C (fr) 2003-09-16
ATE124467T1 (de) 1995-07-15
JPH05503318A (ja) 1993-06-03
DE59009358D1 (de) 1995-08-03
CA2074193A1 (fr) 1991-07-20
WO1991010753A1 (fr) 1991-07-25
JP2908018B2 (ja) 1999-06-21

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