EP0563160B1 - Verfahren zur herstellung einer gesinterten karbonitridlegierung für die extrem-feinbearbeitung beim drehen mit hohen schneidraten - Google Patents

Verfahren zur herstellung einer gesinterten karbonitridlegierung für die extrem-feinbearbeitung beim drehen mit hohen schneidraten Download PDF

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Publication number
EP0563160B1
EP0563160B1 EP92901527A EP92901527A EP0563160B1 EP 0563160 B1 EP0563160 B1 EP 0563160B1 EP 92901527 A EP92901527 A EP 92901527A EP 92901527 A EP92901527 A EP 92901527A EP 0563160 B1 EP0563160 B1 EP 0563160B1
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EP
European Patent Office
Prior art keywords
carbonitride
alloy
metals
complex
carbon
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EP92901527A
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English (en)
French (fr)
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EP0563160A1 (de
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 for extremely fine machining when turning with high cutting rates.
  • 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.
  • 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 binder phase 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 binder phase elements and carbon addition, if any, and minor additions of e.g. TiC, TiN, TaC, VC cr combinations thereof due to small deviations in composition cf 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: 0.86 ⁇ X IV ⁇ 0.99 0.74 ⁇ X C ⁇ 0.83 and in particular: 0.88 ⁇ X IV ⁇ 0.98 0.76 ⁇ X C ⁇ 0.81
  • the latter restricted window can be divided into two, one without other group V metals than Ta: 0.93 ⁇ X IV ⁇ 0.98 0.76 ⁇ X C ⁇ 0.81 and another one with other group V elements than Ta i.e. V and Nb: 0.88 ⁇ X IV ⁇ 0.93 0.76 ⁇ X C ⁇ 0.81
  • compositions 0.94 ⁇ X IV ⁇ 0.98 0.76 ⁇ X C ⁇ 0.80 respectively 0.88 ⁇ X IV ⁇ 0.92 0.77 ⁇ X C ⁇ 0.81
  • x Ti >0.7 preferably x Ti >0.75.
  • the invention comprises stoichiometric as well as usually substoichiometric carbonitrides.
  • Titanium-based carbonitride alloys with 14 % Ni+Co binder phase were produced with the use of a complex raw material according to the invention (Ti 0.90 , Ta 0.03 , V 0.07 ) (C 0.79 ,N 0.21 ) 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: Porosity Compaction pressure, N/mm 2 Alloy according to the invention A00 125 Simple raw materials A04-A06 160

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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)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Ceramic Products (AREA)

Claims (1)

  1. Verfahren zur Herstellung eines gesinterten Carbonitridlegierung auf Titanbasis für Feinbearbeitung mit 3 bsi 25 Gew.% Bindephase durch Vermahlen, Pressen und Sintern eines Pulvergemisches nach bekannter pulvermetallurgischer Technik, wobei der Hauptteil des Pulvergemisches ein komplexes kubisches Carbonitridpulver ist, das aus Metallen der Gruppen IV und V des Periodensystems sowie Kohlenstoff und Stickstoff besteht, wobei mehr als 95 % der Menge dieser Metalle in der fertigen Legierung aus diesem komplexen Carbontrid kommen und dieses komplexe Carbonitrid die Zusammensetzung 0,86 ≤ X IV ≤ 0,99
    Figure imgb0015
     0,74 ≤ X C ≤ 0,83
    Figure imgb0016
     hat, worin XIV der molare Anteil der Elemente der Gruppe IV ist und XC der molare Anteil von Kohlenstoff ist, das komplexe Carbonitrid im wesentlichen äquiaxiale Körner mit einer engen Korngrößenverteilung mit einer mittleren Korngröße von 0,8 bis 3 µm umfaßt und das komplexe Carbonitrid indirekt durch Carbonitrierung der Oxide der Metalle oder der Metalle selbst erhalten wird.
EP92901527A 1990-12-21 1991-12-19 Verfahren zur herstellung einer gesinterten karbonitridlegierung für die extrem-feinbearbeitung beim drehen mit hohen schneidraten Expired - Lifetime EP0563160B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9004116A SE469385B (sv) 1990-12-21 1990-12-21 Saett att framstaella en sintrad karbonitridlegering foer finbearbetning vid svarvning
SE9004116 1990-12-21
PCT/SE1991/000885 WO1992011393A1 (en) 1990-12-21 1991-12-19 Method of producing a sintered carbonitride alloy for extremely fine machining when turning with high cutting rates

Publications (2)

Publication Number Publication Date
EP0563160A1 EP0563160A1 (de) 1993-10-06
EP0563160B1 true EP0563160B1 (de) 1997-04-09

Family

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EP92901527A Expired - Lifetime EP0563160B1 (de) 1990-12-21 1991-12-19 Verfahren zur herstellung einer gesinterten karbonitridlegierung für die extrem-feinbearbeitung beim drehen mit hohen schneidraten

Country Status (6)

Country Link
EP (1) EP0563160B1 (de)
JP (1) JPH06503856A (de)
AT (1) ATE151472T1 (de)
DE (1) DE69125624T2 (de)
SE (1) SE469385B (de)
WO (1) WO1992011393A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2420768A1 (de) * 1973-06-18 1975-01-09 Teledyne Ind Karbonitridlegierungen fuer schneidwerkzeuge und verschleissteile
AU501073B2 (en) * 1974-10-18 1979-06-07 Sumitomo Electric Industries, Ltd. Cemented carbonitride alloys
US4127596A (en) * 1977-04-11 1978-11-28 The Upjohn Company Non-aromatic oxygenated strong acid dehydration of 9α-hydroxyandrostenediones
JPS565946A (en) * 1979-06-28 1981-01-22 Sumitomo Electric Ind Ltd Sintered hard alloy and its manufacture
JPS60181079A (ja) * 1984-02-28 1985-09-14 Sanyo Chem Ind Ltd ３−置換−２−オキサゾリジノン化合物の製造法
US4769070A (en) * 1986-09-05 1988-09-06 Sumitomo Electric Industries, Ltd. High toughness cermet and a process for the production of the same
PT87687B (pt) * 1987-06-12 1992-09-30 Gist Brocades Nv Processo para a preparacao de esteroides de 9(11)-dehidro
US5041399A (en) * 1989-03-07 1991-08-20 Sumitomo Electric Industries, Ltd. Hard sintered body for tools

Also Published As

Publication number Publication date
DE69125624D1 (de) 1997-05-15
ATE151472T1 (de) 1997-04-15
SE9004116L (sv) 1992-06-22
JPH06503856A (ja) 1994-04-28
DE69125624T2 (de) 1997-07-17
SE469385B (sv) 1993-06-28
EP0563160A1 (de) 1993-10-06
WO1992011393A1 (en) 1992-07-09
SE9004116D0 (sv) 1990-12-21

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