WO2025069214A1 - 超硬合金 - Google Patents

超硬合金 Download PDF

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Publication number
WO2025069214A1
WO2025069214A1 PCT/JP2023/035010 JP2023035010W WO2025069214A1 WO 2025069214 A1 WO2025069214 A1 WO 2025069214A1 JP 2023035010 W JP2023035010 W JP 2023035010W WO 2025069214 A1 WO2025069214 A1 WO 2025069214A1
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WO
WIPO (PCT)
Prior art keywords
cemented carbide
binder phase
mass
content
less
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.)
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Application number
PCT/JP2023/035010
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English (en)
French (fr)
Japanese (ja)
Inventor
保樹 城戸
好博 木村
アノンサック パサート
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.)
Sumitomo Electric Industries Ltd
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Sumitomo Electric Industries Ltd
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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to EP23954190.7A priority Critical patent/EP4703487A1/en
Priority to JP2024513341A priority patent/JP7694811B1/ja
Priority to US18/713,208 priority patent/US12442060B2/en
Priority to CN202380100839.XA priority patent/CN121605208A/zh
Priority to PCT/JP2023/035010 priority patent/WO2025069214A1/ja
Priority to TW113122847A priority patent/TW202513814A/zh
Publication of WO2025069214A1 publication Critical patent/WO2025069214A1/ja
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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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
    • C22C29/06—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
    • 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
    • C22C29/067—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 comprising a particular metallic binder
    • 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
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
    • 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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • B22F3/15—Hot isostatic pressing
    • 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
    • B22F9/026—Spray drying of solutions or suspensions
    • 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
    • C22C1/0433—Nickel- or cobalt-based alloys
    • 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

Definitions

  • This disclosure relates to cemented carbide.
  • Patent Document 1 cemented carbide alloys containing multiple tungsten carbide particles and a binder phase have been used as materials for cutting tools.
  • the cemented carbide of the present disclosure is A cemented carbide comprising a plurality of tungsten carbide particles and a binder phase,
  • the cemented carbide comprises 89 volume % or more of the tungsten carbide particles and the binder phase in total,
  • the cemented carbide contains 1.8 vol. % or more and 20.0 vol. % or less of the binder phase, the binder phase comprises cobalt;
  • the cemented carbide contains 1.0 mass% or more of cobalt,
  • the Young's modulus of the binder phase at 25° C., as measured by a nanoindenter method, is 170 GPa or more.
  • FIG. 1 is a diagram illustrating a cross section of a cemented carbide according to an embodiment of the present disclosure.
  • the present disclosure therefore aims to provide a cemented carbide alloy that enables a longer tool life, even when used as a material for cutting tools for highly efficient machining of difficult-to-cut materials, particularly those with high tensile strength.
  • the cemented carbide of the present disclosure is A cemented carbide comprising a plurality of tungsten carbide particles and a binder phase, The cemented carbide contains 89 volume % or more of the tungsten carbide particles and the binder phase in total, The cemented carbide contains the binder phase in an amount of 1.8% by volume or more and 20.0% by volume or less, the binder phase comprises cobalt; The cemented carbide contains 1.0 mass% or more of cobalt, The Young's modulus of the binder phase at 25° C. measured by a nanoindenter method is 170 GPa or more.
  • the binder phase further contains a first element
  • the first element may be at least one element selected from the group consisting of silicon, phosphorus, germanium, tin, rhenium, ruthenium, osmium, iridium, and platinum, thereby making it possible to provide a cemented carbide that can further extend the tool life of a cutting tool, even in high-efficiency machining of difficult-to-cut materials, particularly those with high tensile strength.
  • the percentage of the mass M1 of the first element in the binder phase relative to the sum M1+M2 of the mass M1 of the first element and the mass M2 of cobalt, ⁇ M1/(M1+M2) ⁇ 100, may be 1% or more and 6% or less. This makes it possible to provide a cemented carbide alloy that can further extend the tool life of cutting tools, especially in high-efficiency machining of difficult-to-cut materials with high tensile strength.
  • a ⁇ B means the upper and lower limits of a range (i.e., greater than or equal to A and less than or equal to B). If no unit is stated for A and only a unit is stated for B, the units of A and B are the same.
  • a cemented carbide according to one embodiment of the present disclosure will be described with reference to FIG.
  • One embodiment of the present disclosure (hereinafter also referred to as "the present embodiment") is A cemented carbide (3) comprising a plurality of tungsten carbide particles (1) and a binder phase (2),
  • the cemented carbide 3 contains the tungsten carbide particles 1 and the binder phase 2 in a total amount of 89 volume % or more,
  • the cemented carbide 3 contains the binder phase 2 in an amount of 1.8 vol.% or more and 20.0 vol.% or less,
  • the binder phase 2 contains cobalt,
  • the cemented carbide 3 contains 1.0 mass% or more of cobalt,
  • the Young's modulus of the binder phase 2 at 25° C. measured by a nanoindenter method is 170 GPa or more.
  • the cemented carbide 3 of this embodiment comprises a plurality of tungsten carbide particles 1 (hereinafter also referred to as "WC particles 1") and a binder phase 2, and the total content of the WC particles 1 and the binder phase 2 in the cemented carbide 3 is 89 volume % or more.
  • WC particles 1 tungsten carbide particles 1
  • binder phase 2 the total content of the WC particles 1 and the binder phase 2 in the cemented carbide 3 is 89 volume % or more.
  • the cemented carbide 3 of the first embodiment contains 1.8 volume % or more and 20.0 volume % or less of the binder phase 2, the binder phase 2 contains cobalt, and the cemented carbide 3 contains 1.0 mass % or more of cobalt. Furthermore, the Young's modulus of the binder phase 2 at 25°C measured by the nanoindenter method is 170 GPa or more, and the binder phase 2 can have an excellent Young's modulus under conditions of 25°C (in other words, under room temperature conditions). As a result, the Young's modulus of the cemented carbide 3 is improved, and a cutting tool using the cemented carbide 3 can have excellent chipping resistance, especially in high-efficiency machining of difficult-to-cut materials with high tensile strength.
  • the cemented carbide 3 contains tungsten carbide particles 1 and binder phase 2 in a total amount of 89% or more by volume. This allows the Young's modulus of the cemented carbide 3 to be increased.
  • the cemented carbide 3 may contain tungsten carbide particles 1 and binder phase 2 in a total amount of 90% or more by volume, 91% or more by volume, or 92% or more by volume.
  • the upper limit of the total content of the tungsten carbide particles 1 and binder phase 2 may be, for example, 100% or less by volume, 99% or less by volume, or 98% or less by volume.
  • the cemented carbide 3 may contain tungsten carbide particles 1 and binder phase 2 in a total amount of 90% or more by volume and 100% or less by volume, 91% or more by volume and 100% or less by volume, or 92% or more by volume and 100% or less by volume.
  • the cemented carbide 3 contains 1.8 vol.% or more and 20.0 vol.% or less of the binder phase 2. This allows the cemented carbide 3 to have an increased Young's modulus and toughness.
  • the lower limit of the content of the binder phase 2 in the cemented carbide 3 may be 2.0 vol.% or more, 3.0 vol.% or more, or 4.0 vol.% or more.
  • the upper limit of the content of the binder phase 2 in the cemented carbide 3 may be 19.0 vol.% or less, 18.0 vol.% or less, or 17.0 vol.% or less.
  • the cemented carbide 3 may contain 2.0 vol.% or more and 19.0 vol.% or less of the binder phase 2, 3.0 vol.% or more and 18.0 vol.% or less of the binder phase 2, or 4.0 vol.% or more and 17.0 vol.% or less of the binder phase 2.
  • the cemented carbide 3 of the first embodiment can be composed of a plurality of tungsten carbide particles 1 and a binder phase 2.
  • the cemented carbide 3 of the present embodiment can include other phases (not shown) in addition to the tungsten carbide particles 1 and the binder phase 2.
  • the other phases include carbides, nitrides, or carbonitrides containing at least one second element selected from the group consisting of titanium (Ti), tantalum (Ta), niobium (Nb), zirconium (Zr), hafnium (Hf), and molybdenum (Mo).
  • the composition of the other phases is, for example, TiCN, TaC, NbC, ZrC, HfC, or Mo2C .
  • the cemented carbide 3 of the first embodiment can be composed of tungsten carbide particles 1, a binder phase 2, and other phases.
  • the content of the other phases in the cemented carbide 3 is acceptable within a range that does not impair the effects of the present disclosure.
  • the content of the other phases in the cemented carbide 3 may be more than 0 vol% and less than 20 vol%, more than 0 vol% and less than 18 vol%, or more than 0 vol% and less than 16 vol%.
  • the total content of the tungsten carbide particles 1 and the binder phase 2 in the cemented carbide 3 may be 80 vol% or more and less than 100 vol%, 82 vol% or more and less than 100 vol%, or 84 vol% or more and less than 100 vol%.
  • the cemented carbide 3 of the first embodiment may contain impurities.
  • the impurities include iron (Fe), calcium (Ca), oxygen (O), and sulfur (S).
  • the impurity content of the cemented carbide 3 is acceptable within a range that does not impair the effects of the present disclosure.
  • the impurity content of the cemented carbide 3 may be 0 mass% or more and less than 0.1 mass%.
  • the impurity content of the cemented carbide 3 is measured by ICP optical emission spectroscopy (Inductively Coupled Plasma Emission Spectroscopy (measuring device: Shimadzu Corporation "ICPS-8100" (trademark)).
  • the method for measuring the content [volume %] of tungsten carbide particles 1 in cemented carbide 3 and the content [volume %] of binder phase 2 in cemented carbide 3 is as follows.
  • the mirror-finished surface of the cemented carbide 3 is photographed with a scanning electron microscope (SEM) to obtain a backscattered electron image.
  • the photographed area is set to the center of the cross section of the cemented carbide 3, that is, a position that does not include any part whose properties are clearly different from the bulk part, such as the surface area of the cemented carbide 3 (a position where the entire photographed area is the bulk part of the cemented carbide 3).
  • the observation magnification is 5000x.
  • the measurement conditions are an acceleration voltage of 3 kV, a current value of 2 nA, and a working distance (WD) of 5 mm.
  • (D1) The photographed area of (C1) above is analyzed using an energy dispersive X-ray analyzer (SEM-EDX) attached to a SEM to determine the distribution of the elements identified in (B1) above in the photographed area, and an element mapping image is obtained.
  • SEM-EDX energy dispersive X-ray analyzer
  • the above (G1) measurement is performed in five different non-overlapping measurement fields.
  • the average of the area percentages of tungsten carbide particles 1 in the five measurement fields corresponds to the content [volume %] of tungsten carbide particles 1 in cemented carbide 2
  • the average of the area percentages of binder phase 2 in the five measurement fields corresponds to the content [volume %] of binder phase 2 in cemented carbide 3.
  • the content of the other phases in the cemented carbide 3 can be obtained by subtracting the content [volume %] of the tungsten carbide particles 1 and the content [volume %] of the binder phase 2 measured by the above procedure from the total cemented carbide 3 (100 volume %).
  • the binder phase 2 contains cobalt, and the cemented carbide 3 contains 1.0 mass% or more of cobalt. This can impart excellent toughness to the cemented carbide 3.
  • the binder phase 2 may contain 50 mass% or more of cobalt, 60 mass% or more, 70 mass% or more, 80 mass% or more, 90 mass% or more, or 95 mass% or more of cobalt.
  • the binder phase 2 may be made of cobalt.
  • the binder phase 2 may also be made of cobalt and a first element described later.
  • Cobalt in the cemented carbide 3 may be present only in the binder phase 2.
  • the lower limit of the content of cobalt in the cemented carbide 3 may be 2.0 mass% or more, 3.0 mass% or more, or 4.0 mass% or more.
  • ⁇ Cutting test> First, an end mill with a cutting diameter of 6 mm was fabricated as a cutting tool for each sample by machining a round bar made of cemented carbide for each sample. Next, cutting was performed using the end mill for each sample under the following cutting conditions, and the cutting length until chipping occurred in the end mill was measured. The results obtained are shown in the "Cutting length [m]" column in Tables 3 and 4, respectively. Note that the longer the cutting length, the longer the tool life. ⁇ Cutting conditions> Workpiece material: "Hastelloy C276" (trademark) made by Osaka Stainless Steel Co., Ltd.

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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)
PCT/JP2023/035010 2023-09-26 2023-09-26 超硬合金 Pending WO2025069214A1 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP23954190.7A EP4703487A1 (en) 2023-09-26 2023-09-26 Cemented carbide
JP2024513341A JP7694811B1 (ja) 2023-09-26 2023-09-26 超硬合金
US18/713,208 US12442060B2 (en) 2023-09-26 2023-09-26 Cemented carbide
CN202380100839.XA CN121605208A (zh) 2023-09-26 2023-09-26 硬质合金
PCT/JP2023/035010 WO2025069214A1 (ja) 2023-09-26 2023-09-26 超硬合金
TW113122847A TW202513814A (zh) 2023-09-26 2024-06-20 超硬合金

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2023/035010 WO2025069214A1 (ja) 2023-09-26 2023-09-26 超硬合金

Publications (1)

Publication Number Publication Date
WO2025069214A1 true WO2025069214A1 (ja) 2025-04-03

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PCT/JP2023/035010 Pending WO2025069214A1 (ja) 2023-09-26 2023-09-26 超硬合金

Country Status (6)

Country Link
US (1) US12442060B2 (https=)
EP (1) EP4703487A1 (https=)
JP (1) JP7694811B1 (https=)
CN (1) CN121605208A (https=)
TW (1) TW202513814A (https=)
WO (1) WO2025069214A1 (https=)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6514456B1 (en) * 1999-10-12 2003-02-04 Plansee Tizit Aktiengesellschaft Cutting metal alloy for shaping by electrical discharge machining methods
JP2004131769A (ja) 2002-10-09 2004-04-30 Toshiba Tungaloy Co Ltd 超微粒超硬合金
JP2006037160A (ja) * 2004-07-27 2006-02-09 Tungaloy Corp 焼結体
WO2011002008A1 (ja) * 2009-06-30 2011-01-06 株式会社タンガロイ サーメットおよび被覆サーメット
WO2015178484A1 (ja) * 2014-05-23 2015-11-26 株式会社タンガロイ 超硬合金および被覆超硬合金
US20190345589A1 (en) * 2017-08-23 2019-11-14 Element Six Gmbh Cemented carbide material

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5603075A (en) * 1995-03-03 1997-02-11 Kennametal Inc. Corrosion resistant cermet wear parts
US20070034048A1 (en) * 2003-01-13 2007-02-15 Liu Shaiw-Rong S Hardmetal materials for high-temperature applications
US9359827B2 (en) * 2013-03-01 2016-06-07 Baker Hughes Incorporated Hardfacing compositions including ruthenium, earth-boring tools having such hardfacing, and related methods

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6514456B1 (en) * 1999-10-12 2003-02-04 Plansee Tizit Aktiengesellschaft Cutting metal alloy for shaping by electrical discharge machining methods
JP2004131769A (ja) 2002-10-09 2004-04-30 Toshiba Tungaloy Co Ltd 超微粒超硬合金
JP2006037160A (ja) * 2004-07-27 2006-02-09 Tungaloy Corp 焼結体
WO2011002008A1 (ja) * 2009-06-30 2011-01-06 株式会社タンガロイ サーメットおよび被覆サーメット
WO2015178484A1 (ja) * 2014-05-23 2015-11-26 株式会社タンガロイ 超硬合金および被覆超硬合金
US20190345589A1 (en) * 2017-08-23 2019-11-14 Element Six Gmbh Cemented carbide material

Also Published As

Publication number Publication date
EP4703487A1 (en) 2026-03-04
US12442060B2 (en) 2025-10-14
CN121605208A (zh) 2026-03-03
JP7694811B1 (ja) 2025-06-18
JPWO2025069214A1 (https=) 2025-04-03
TW202513814A (zh) 2025-04-01
US20250101549A1 (en) 2025-03-27

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