EP0563203B1 - Procede de production d'un alliage de carbonitrure fritte pour usinage intermittent de materiaux difficiles a usiner - Google Patents

Procede de production d'un alliage de carbonitrure fritte pour usinage intermittent de materiaux difficiles a usiner Download PDF

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Publication number
EP0563203B1
EP0563203B1 EP92901893A EP92901893A EP0563203B1 EP 0563203 B1 EP0563203 B1 EP 0563203B1 EP 92901893 A EP92901893 A EP 92901893A EP 92901893 A EP92901893 A EP 92901893A EP 0563203 B1 EP0563203 B1 EP 0563203B1
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EP
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Prior art keywords
carbonitride
alloy
metals
complex
carbon
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EP92901893A
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German (de)
English (en)
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EP0563203A1 (fr
Inventor
Gerold Weinl
Rolf Oskarsson
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Sandvik AB
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Sandvik AB
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/04—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbonitrides
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/09—Mixtures of metallic powders
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling

Definitions

  • the present invention relates to a method of producing a sintered carbonitride alloy with titanium as main constituent particularly suited for intermittent machining of materials difficult to machine.
  • Sintered carbonitride alloys based on mainly titanium usually referred to as cermets have during the last years increased their use at the expense of more traditional cemented carbide i.e. tungsten carbide based alloys.
  • US 3,971,656 discloses the production of an alloy with a duplex hard constituent where the core has a high content of Ti and N and the surrounding rim has a lower content of these two elements which is compensated for by a higher content of group VI metals i.e. in principle Mo and W and by higher carbon content.
  • group VI metals i.e. in principle Mo and W and by higher carbon content.
  • the higher content of Mo, W and C has inter alia the advantage that the wetting against the binderphase is improved i.e. the sintering is facilitated.
  • As a raw material a carbonitride of titanium and a group VI metal is used.
  • EP-A-259192 discloses a sintered alloy comprising a mixed carbonitride of titanium and at least one element from the group consisting of group IV, V and VI elements except titanium in a binder phase based on Co and/or Ni.
  • the alloy is produced by mixing powders of the hard constituents, heating the mixture in a nitrogen atmosphere at a temperature of at least the sintering temperature to form a complex carbonitride solid solution comprising also the group VI element(s), milling said solid solution to obtain a carbonitride powder which is mixed with Co and/or Ni and sintered.
  • the invention is defined in claim 1.
  • titanium and tantalum shall be present in the raw material according to the invention.
  • vanadium, niobium and suitably also zirconium and hafnium are present in the complex carbonitride form if they are part of the finished sintered alloy.
  • the raw material accordinging to the invention is produced directly by carbonitriding of the oxides of the metals or the metals themselves.
  • a carbonitride powder with essentially equiaxial grains and a narrow grain size distribution is obtained with a mean grain size of 0.8 - 3 ⁇ m, preferably 1 - 2 ⁇ m.
  • the invention thus relates to a method of producing a titanium based carbonitride alloy with 3-25 % by weight binderphase based on Co, Ni and/or Fe using the above mentioned complex raw material.
  • This raw material is milled together with carbides from group VI, if any, and binderphase elements and carbon addition, if any, and minor additions of e.g. TiC, TiN, TaC, VC or combinations thereof due to small deviations in composition of the complex raw material whereafter compaction and sintering, preferably in an inert atmosphere, is performed according to known technique.
  • Fig 1 shows the 'window' in the composition diagram for Group IV-Group V - C-N, expressed in molar ratio, of the complex raw material which shows the above mentioned advantages in high magnification, whereas fig 2 shows where in the total molar ratio diagram this small area is situated.
  • Group IV metals are Ti, Zr and/or Hf and Group V metals are V, Nb and/or Ta.
  • the window comprises the composition area: 0.84 ⁇ X IV ⁇ 0.97 0.44 ⁇ X C ⁇ 0.55 and in particular: 0.86 ⁇ X IV ⁇ 0.95 0.46 ⁇ X C ⁇ 0.53
  • the latter restricted window can be divided into two, one without other group V metals than Ta: 0.905 ⁇ X IV ⁇ 0.95 0.46 ⁇ X C ⁇ 0.53 and another one with other group V elements than Ta i.e. V and Nb: 0.86 ⁇ X IV ⁇ 0.905 0.46 ⁇ X C ⁇ 0.53
  • the invention comprises stoichiometric as well as usually substoichiometric carbonitrides.
  • Titanium-based carbonitride alloys with 17.5 % Ni+Co binder phase were produced with the use of a complex raw material according to the invention (Ti 0.88 , Ta 0.06 , Nb 0.06 ) (C 0.51 , N 0.49 ) as well as with the use of simple raw material: TiN, TiC and VC. In both cases also WC and Mo 2 C were added in addition to Co and Ni. The following compaction pressure and porosity after milling and sintering to the same grain size were obtained: Compaction Porosity pressure, N/mm 2 Alloy according to the invention A00 154 Simple raw materials A06-A08 206 B04

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Ceramic Products (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Claims (1)

  1. Procédé de fabrication d'un alliage de carbonitrure fritté à base de titane, pour usinage fin, comportant 3 à 25 % en poids d'une phase liante, par broyage, compression et frittage d'un mélange de poudres, selon une technique connue de la métallurgie des poudres, procédé dans lequel la partie principale dudit mélange de poudres est une poudre de carbonitrure cubique complexe constituée de métaux des groupes IV et V du système périodique, et de carbone et d'azote, plus de 95 % de la quantité desdits métaux dans l'alliage fini provenant dudit carbonitrure complexe, et ledit carbonitrure complexe ayant la composition 0,86 ≤ X IV ≤ 0,97
    Figure imgb0017
     0,44 ≤ X C ≤ 0,55
    Figure imgb0018
     dans laquelle XIV est le rapport molaire des éléments du groupe IV et XC est le rapport molaire du carbone, le carbonitrure complexe comprenant essentiellement des grains équiaxes avec une étroite distribution granulométrique et une granulométrie moyenne de 0,8 à 3 µm, ledit carbonitrure complexe étant produit directement par carbonitruration des oxydes des métaux ou des métaux eux-mêmes.
EP92901893A 1990-12-21 1991-12-19 Procede de production d'un alliage de carbonitrure fritte pour usinage intermittent de materiaux difficiles a usiner Expired - Lifetime EP0563203B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9004119 1990-12-21
SE9004119A SE9004119D0 (sv) 1990-12-21 1990-12-21 Saett foer framstaellning av en sintrad karbonitridlegering foer intermittent bearbetning av svaarbearbetade material
PCT/SE1991/000888 WO1992011396A1 (fr) 1990-12-21 1991-12-19 Procede de production d'un alliage de carbonitrure fritte pour usinage intermittent de materiaux difficiles a usiner

Publications (2)

Publication Number Publication Date
EP0563203A1 EP0563203A1 (fr) 1993-10-06
EP0563203B1 true EP0563203B1 (fr) 1997-04-09

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EP92901893A Expired - Lifetime EP0563203B1 (fr) 1990-12-21 1991-12-19 Procede de production d'un alliage de carbonitrure fritte pour usinage intermittent de materiaux difficiles a usiner

Country Status (6)

Country Link
EP (1) EP0563203B1 (fr)
JP (1) JPH06504588A (fr)
AT (1) ATE151473T1 (fr)
DE (1) DE69125626T2 (fr)
SE (1) SE9004119D0 (fr)
WO (1) WO1992011396A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4205946B2 (ja) * 2000-12-19 2009-01-07 本田技研工業株式会社 複合材料
CN109338196B (zh) * 2018-11-30 2020-12-11 岭南师范学院 Ti(C，N)基金属陶瓷及其制备方法和应用

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU501073B2 (en) * 1974-10-18 1979-06-07 Sumitomo Electric Industries, Ltd. Cemented carbonitride alloys
US4769070A (en) * 1986-09-05 1988-09-06 Sumitomo Electric Industries, Ltd. High toughness cermet and a process for the production of the same

Also Published As

Publication number Publication date
ATE151473T1 (de) 1997-04-15
JPH06504588A (ja) 1994-05-26
WO1992011396A1 (fr) 1992-07-09
EP0563203A1 (fr) 1993-10-06
SE9004119D0 (sv) 1990-12-21
DE69125626T2 (de) 1997-07-24
DE69125626D1 (de) 1997-05-15

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