EP1043411A2 - Verfahren zur Herstellung von metallischem Verbundmaterial - Google Patents

Verfahren zur Herstellung von metallischem Verbundmaterial Download PDF

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Publication number
EP1043411A2
EP1043411A2 EP00105246A EP00105246A EP1043411A2 EP 1043411 A2 EP1043411 A2 EP 1043411A2 EP 00105246 A EP00105246 A EP 00105246A EP 00105246 A EP00105246 A EP 00105246A EP 1043411 A2 EP1043411 A2 EP 1043411A2
Authority
EP
European Patent Office
Prior art keywords
solution
powder
water
hard constituent
metal
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
EP00105246A
Other languages
English (en)
French (fr)
Other versions
EP1043411A3 (de
EP1043411B1 (de
Inventor
Mats Waldenström
Rolf Svensson
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.)
Sandvik Intellectual Property AB
Original Assignee
Sandvik Intellectual Property AB
Sandvik AB
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 Sandvik Intellectual Property AB, Sandvik AB filed Critical Sandvik Intellectual Property AB
Publication of EP1043411A2 publication Critical patent/EP1043411A2/de
Publication of EP1043411A3 publication Critical patent/EP1043411A3/de
Application granted granted Critical
Publication of EP1043411B1 publication Critical patent/EP1043411B1/de
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
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/05—Mixtures of metal powder with non-metallic powder
    • C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
    • 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
    • C22C29/06—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 carbides, but not containing other metal compounds
    • C22C29/08—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 carbides, but not containing other metal compounds based on tungsten carbide
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Definitions

  • the present invention relates to a method of producing metal composite materials such as cemented carbide.
  • Hard constituent powder and, optionally, a soluble carbon source are added to the solution.
  • the solvent is evaporated and remaining powder is heat-treated in inert and/or reducing atmosphere.
  • hard constituent powder coated with at least one iron group metal is obtained which after addition of pressing agent can be compacted and sintered according to standard practice to a body containing hard constituents in a binder phase.
  • grain growth inhibitors When making submicron cemented carbide i.e. with a WC grain size of ⁇ 1 ⁇ m grain growth inhibitors have to be added in order to avoid WC grain growth during sintering.
  • grain growth inhibitors the metals V and Cr are often used but also Mo and W can be used.
  • the powder obtained was fired in a furnace in a porous bed about 1 cm thick in nitrogen atmosphere in a closed vessel, heating rate 10°C/min to 500°C, completed with reduction in hydrogen for 90 minutes, finally followed by cooling in nitrogen atmosphere at 10°C/min. No cooling step between burning off and reduction step was used.
  • the powder obtained was mixed with pressing agent in ethanol with adjustment of carbon content (carbon black), dried, compacted and sintered according standard practice for WC-Co alloys.
  • Example 2 A WC-0.9 wt%Mo-10 wt%Co cemented carbide was made in the same way as in Example 1 but with no addition of cobalt acetate tetrahydrate (Co(C 2 H 3 O 2 ) 2 x 4H 2 O) and only 1.7 g triethanolamine to the solution. The same result as in Example 1 was obtained.
  • a WC-0.9 wt%Mo-10 wt%Co cemented carbide was made in the same way as in Example 1 but the solution used was a mixture of 250 ml methanol + 100 ml water (1.06 g ammonium molybdate tetrahydrate/100 ml solution). The same result as in Example 1 was obtained.
  • a WC-0.9 wt%Mo-10 wt%Co cemented carbide was made in the same way as in Example 1 but the solution used was a mixture of 100 ml ethanol + 140 ml water (1.54 g ammonium molybdate tetrahydrate/100 ml solution). The same result as in Example 1 was obtained.
  • a WC-0.9 wt%Mo-10 wt%Co cemented carbide was made in the same way as in Example 1 but the solution used was a mixture of 230 ml ethanol + 20 ml water (1.48 g ammonium molybdate tetrahydrate/100 ml solution). A cemented carbide structure with porosity A02, B04 was obtained.
  • the powder obtained was fired in a furnace in a porous bed about 1 cm thick in nitrogen atmosphere in a closed vessel, heating rate 10°C/min to 500°C, completed with reduction in hydrogen for 90 minutes, finally followed by cooling in nitrogen atmosphere at 10°C/min. No cooling step between burning off and reduction step was used.
  • the powder obtained was mixed with pressing agent in ethanol with adjustment of carbon content (carbon black), dried, compacted and sintered according standard practice for WC-Co alloys.
  • a WC-0.9 wt%W-10 wt%Co cemented carbide was made in the same way as in Example 6 but with no addition of cobalt acetate tetrahydrate (Co(C 2 H 3 O 2 ) 2 x 4H 2 O) and only 1.0 g triethanolamine to the solution. The same result as in Example 6 was obtained.
  • a WC-0.9 wt%W-10 wt%Co cemented carbide was made in the same way as in Example 6 but the solution used was a mixture of 175 ml methanol + 175 ml water (0.83 g ammonium metatungstate hydrate/100 ml solution). The same result as in Example 6 was obtained.
  • a WC-0.9 wt%W-10 wt%Co cemented carbide was made in the same way as in Example 6 but the solution used was a mixture of 200 ml ethanol + 100 ml water (0.97 g ammonium metatungstate hydrate/100 ml solution). The same result as in Example 6 was obtained.
  • a WC-0.9 wt%W-10 wt%Co cemented carbide was made in the same way as in Example 6 but the solution used was 200 ml ethanol with no water (1.45 g ammonium metatungstate hydrate/100 ml solution).
  • a cemented carbide structure with high porosity A04, B08 was obtained.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Carbon And Carbon Compounds (AREA)
EP00105246A 1999-04-06 2000-03-14 Verfahren zur Herstellung von metallischem Verbundmaterial Expired - Lifetime EP1043411B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9901206A SE519233C2 (sv) 1999-04-06 1999-04-06 Sätt att tillverka metallkompositmaterial för hårdmetall
SE9901206 1999-04-06

Publications (3)

Publication Number Publication Date
EP1043411A2 true EP1043411A2 (de) 2000-10-11
EP1043411A3 EP1043411A3 (de) 2005-11-02
EP1043411B1 EP1043411B1 (de) 2008-07-09

Family

ID=20415101

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00105246A Expired - Lifetime EP1043411B1 (de) 1999-04-06 2000-03-14 Verfahren zur Herstellung von metallischem Verbundmaterial

Country Status (5)

Country Link
EP (1) EP1043411B1 (de)
JP (1) JP2000313929A (de)
AT (1) ATE400669T1 (de)
DE (1) DE60039384D1 (de)
SE (1) SE519233C2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2678514A4 (de) * 2011-02-22 2017-01-11 Baker Hughes Incorporated Verfahren zur herstellung polykristalliner presslinge, schneideelemente und erdbohrwerkzeuge

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102187005A (zh) 2008-10-20 2011-09-14 H.C.施塔克股份有限公司 用于生产基于碳化钨的硬质金属的含钼金属粉末
DE102008052559A1 (de) 2008-10-21 2010-06-02 H.C. Starck Gmbh Metallpulver
JP6228765B2 (ja) * 2013-06-19 2017-11-08 小林　博 ナノ粒子の製造方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0916743A1 (de) * 1997-10-14 1999-05-19 Sandvik Aktiebolag Verfahren zur Herstellung von Metallverbundwerkstoffen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0916743A1 (de) * 1997-10-14 1999-05-19 Sandvik Aktiebolag Verfahren zur Herstellung von Metallverbundwerkstoffen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2678514A4 (de) * 2011-02-22 2017-01-11 Baker Hughes Incorporated Verfahren zur herstellung polykristalliner presslinge, schneideelemente und erdbohrwerkzeuge
US10647614B2 (en) 2011-02-22 2020-05-12 Baker Hughes Incorporated Cutting elements and tools comprising interbonded grains of diamond and related compositions
US10766823B2 (en) 2011-02-22 2020-09-08 Baker Hughes, A Ge Company, Llc Cutting elements and tools comprising interbonded grains of diamond and related methods

Also Published As

Publication number Publication date
EP1043411A3 (de) 2005-11-02
SE9901206L (sv) 2000-10-07
ATE400669T1 (de) 2008-07-15
JP2000313929A (ja) 2000-11-14
SE519233C2 (sv) 2003-02-04
SE9901206D0 (sv) 1999-04-06
DE60039384D1 (de) 2008-08-21
EP1043411B1 (de) 2008-07-09

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