JP3087555B2 - 耐チッピング性のすぐれたダイヤモンド基超高圧焼結材料製切削工具およびその製造法 - Google Patents

耐チッピング性のすぐれたダイヤモンド基超高圧焼結材料製切削工具およびその製造法

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Publication number
JP3087555B2
JP3087555B2 JP05348131A JP34813193A JP3087555B2 JP 3087555 B2 JP3087555 B2 JP 3087555B2 JP 05348131 A JP05348131 A JP 05348131A JP 34813193 A JP34813193 A JP 34813193A JP 3087555 B2 JP3087555 B2 JP 3087555B2
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Prior art keywords
diamond
cutting tool
pressure sintered
sintered material
cutting
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JP05348131A
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JPH07185910A (ja
Inventor
文洋 植田
忠一 大橋
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Mitsubishi Materials Corp
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Mitsubishi Materials Corp
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Priority to JP05348131A priority Critical patent/JP3087555B2/ja
Priority to DE4445765A priority patent/DE4445765C2/de
Priority to US08/361,386 priority patent/US5624756A/en
Publication of JPH07185910A publication Critical patent/JPH07185910A/ja
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Publication of JP3087555B2 publication Critical patent/JP3087555B2/ja
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    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
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    • B01J3/062—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies characterised by the composition of the materials to be processed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/18—Cutting tools of which the bits or tips or cutting inserts are of special material with cutting bits or tips or cutting inserts rigidly mounted, e.g. by brazing
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  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
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Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】この発明は、素地中に微細均一に
分散分布する気孔によってクラックの伝播が阻止され、
この結果としてすぐれた耐チッピング性を発揮するよう
になるダイヤモンド基超高圧焼結材料製切削工具および
その製造法に関するものである。
【０００２】
【従来の技術】従来、例えば特開平４−７４７６６号公
報に記載される通り、重量％で（以下、％は重量％を示
す）、炭酸バリウム（以下、ＢａＣＯ3 で示す）および
／または炭酸マグネシウム（以下、ＭｇＣＯ3 で示
す）：０．１〜１５％、を含有し、残りが実質的に素地
を構成するダイヤモンドからなる組成、並びに上記Ｂａ
ＣＯ3 および／またはＭｇＣＯ3 がダイヤモンド素地中
に微細均一に分散分布した組織、さらに９９％を越えた
理論密度比を有するダイヤモンド基超高圧焼結材料で構
成された切削工具が、例えばＷＣ基超硬合金やＴｉ合金
などの仕上切削に用いられていることは良く知られると
ころである。
【０００３】
【発明が解決しようとする課題】一方、近年の切削加工
の省力化に対する要求は強く、これに伴ない、切削加工
は高速化の傾向にあるが、上記の従来ダイヤモンド基超
高圧焼結材料製切削工具を用いて、例えばＴｉ合金やＷ
Ｃ基超硬合金などの仕上切削を行なうに際して、これを
高速で行なうと、切刃にチッピング（微小欠け）が発生
し易く、比較的短時間で使用寿命に至るのが現状であ
る。
【０００４】
【課題を解決するための手段】そこで、本発明者等は、
上述のような観点から、上記の従来ダイヤモンド基超高
圧焼結材料製切削工具に着目し、これの耐チッピング性
向上をはかるべく研究を行なった結果、上記の従来ダイ
ヤモンド基超高圧焼結材料製切削工具に、真空中、１０
００〜１４００℃の温度に加熱保持の条件で加熱処理を
施すと、これを構成するダイヤモンド基超高圧焼結材料
の構成成分であるＢａＣＯ3 およびＭｇＣＯ3 の炭酸塩
が酸化物、すなわち酸化バリウム（以下、ＢａＯで示
す）および酸化マグネシウム（以下、ＭｇＯで示す）に
化学変化し、これと同時に微細な気孔が形成し、この気
孔形成によって９６〜９９．５％の理論密度比になる
が、この結果のダイヤモンド基超高圧焼結材料製切削工
具は、ダイヤモンド素地にＢａＯおよび／またはＭｇＯ
と共に微細均一に分散分布する気孔によって切削時に発
生したクラックの伝播が阻止されることから、耐チッピ
ング性の著しく向上したものになり、さらに上記酸化物
は上記炭酸塩に比して硬質にして、耐熱性にすぐれたも
のであるので、ダイヤモンド素地との共存において一段
とすぐれた耐摩耗性を発揮するようになるという研究結
果を得たのである。
【０００５】この発明は、上記の研究結果にもとづいて
なされたものであって、（１） ＢａＯおよび／または
ＭｇＯ：０．０５〜１３％、を含有し、残りが実質的に
素地を構成するダイヤモンドからなる組成、並びに上記
ＢａＯおよび／またはＭｇＯと気孔とがダイヤモンド素
地中に微細均一に分散分布した組織、および９６〜９
９．５％の理論密度比を有するダイヤモンド基超高圧焼
結材料で構成された耐チッピング性のすぐれたダイヤモ
ンド基超高圧焼結材料製切削工具、（２） 並びに、Ｂ
ａＣＯ3 および／またはＭｇＣＯ3 ：０．１〜２０％を
含有し、残りが実質的に素地を構成するダイヤモンドか
らなる組成、並びに上記ＢａＣＯ3 および／またはＭｇ
ＣＯ3 がダイヤモンド素地中に微細均一に分散分布した
組織、および９９．５％超の理論密度比を有するダイヤ
モンド基超高圧焼結材料で構成された切削工具素材に、
真空中、１０００〜１４００℃の温度に加熱保持の条件
で加熱処理を施して、上記素地中の炭酸塩を酸化物に化
学変化せしめると同時に、素地中に微細均一に分散分布
する気孔を形成することにより上記（１）記載の耐チッ
ピング性のすぐれたダイヤモンド基超高圧焼結材料製切
削工具を製造する方法、に特徴を有するものである。
【０００６】つぎに、この発明の切削工具において、上
記の通りに数値限定した理由を説明する。 （ａ） 酸化物および炭酸塩の含有量、並びに理論密度
比 切削工具中の酸化物含有量が０．０５％未満であること
は、切削工具素材中の炭酸塩含有量が０．１％未満であ
ることを意味し、炭酸塩含有量が０．１％未満になる
と、切削工具素材の焼結時のダイヤモンド粉末同志の結
合促進効果が不十分であるばかりでなく、加熱処理によ
って形成される気孔も少なく、この結果理論密度比が９
９．５％を越えて高いものとなり、耐チッピング性に所
望の向上効果が得られず、一方酸化物含有量が１３％を
越えるということは、切削工具素材中の炭酸塩の割合が
２０％を越えて高くなることを意味し、この場合加熱処
理時の気孔形成が多くなり過ぎ、９６％未満の理論密度
比となって密度低下が著しくなるばかりでなく、ダイヤ
モンド素地による耐摩耗性も損なわれるようになり、こ
のことは切削工具素材の理論密度比が９９．５％以下で
あっても同様であって、特に炭酸塩の含有量が高い場合
に切削工具に９６％以上の理論密度比を確保することが
できないものであり、以上の理由から切削工具の酸化物
含有量を０．０５〜１３％、同理論密度比を９６〜９
９．５％、さらに切削工具素材の炭酸塩含有量を０．１
〜２０％、同理論密度比を９９．５％超と定めたのであ
る。 （ｂ） 加熱処理温度 その温度が１０００℃未満では炭酸塩の酸化物への化学
変化が十分に行なわれず、一方その温度が１４００℃を
越えると素地のダイヤモンドと生成した酸化物とが反応
し易くなることから、その温度を１０００〜１４００℃
と定めた。
【０００７】
【実施例】つぎに、この発明の切削工具およびその製造
方法を実施例により具体的に説明する。まず、特開平４
−７４７６６号公報の実施例に記載される通りの具体的
手段によって、それぞれ表１に示される組成および理論
密度比を有し、いずれもＢａＣＯ3 および／またはＭｇ
ＣＯ3 がダイヤモンド素地に微細均一に分散分布した組
織を有するダイヤモンド基超高圧焼結材料で構成され、
かつ直径：７mmφ×厚さ：１mmの寸法をもった１０種類
の切削工具素材を用意し、この切削工具素材に、同じく
表１に示される条件で加熱処理を施し、ＴＮＧＡ３３２
の形状に則した切削チップに切出すことにより本発明法
１〜８を実施し、それぞれ表２に示される組成および理
論密度比、並びにダイヤモンド素地中にＢａＯおよび／
またはＭｇＯが微細均一に分散分布した組織を有するダ
イヤモンド基超高圧焼結材料で構成された本発明ダイヤ
モンド基超高圧焼結材料製切削工具（以下、本発明切削
工具という）１〜１０をそれぞれ製造した。
【０００８】
【表１】
【０００９】
【表２】
【００１０】また、比較の目的で、上記の１０種類の切
削工具素材から、加熱処理を行なわずに切削チップを切
出すことにより従来ダイヤモンド基超高圧焼結材料製切
削工具（以下、従来切削工具という）１〜１０ををそれ
ぞれ製造した。ついで、この結果得られた各種の切削工
具について、これをＷＣ基超硬合金（Ｃｏ：６％含有）
製基体にろう付けした状態で、 被削材：Ｔｉ６％Ａｌ−４％Ｖの組成を有するＴｉ合金
の丸棒、切削速度：３００ｍ／min 、切込み：０．２m
m、送り：０．１mm／rev.、切削時間：３０分、の条件
でＴｉ合金の連続乾式高速仕上切削試験を行ない、切刃
の逃げ面摩耗幅を測定した。この測定結果を表２に示し
た。
【００１１】
【発明の効果】表１，２に示される結果から、本発明切
削工具１〜１０は、特にダイヤモンド素地中に微細均一
に分散分布する気孔によって切削中に発生したクラック
の伝播が阻止されることから、クラックが発生し易いＴ
ｉ合金などの硬質材料の高速仕上切削でも、切刃にチッ
ピングが発生することなく、すぐれた耐摩耗性を示すの
に対して、従来切削工具１〜１０においては、切削開始
後、切刃にチッピングが発生し、これが原因で比較的短
時間で使用寿命に至ることが明らかである。上述のよう
に、この発明の方法によれば、耐チッピング性のすぐれ
たダイヤモンド基超高圧焼結材料製切削工具を製造する
ことができ、したがってこれを切刃にチッピングの発生
し易いＴｉ合金やＷＣ基超硬合金などの硬質材料の高速
切削に用いた場合にも切刃にチッピングが発生すること
なく、長期に亘ってすぐれた切削性能を発揮するので、
切削加工の省力化に寄与するものである。
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B23B 27/20 B23B 27/14 B23P 15/28 C04B 35/52 301

Claims (2)

    (57)【特許請求の範囲】
  1. 【請求項１】 重量％で、 酸化バリウムおよび／または酸化マグネシウム：０．０
    ５〜１３％、を含有し、残りが実質的に素地を構成する
    ダイヤモンドからなる組成、並びに、 上記酸化バリウムおよび／または酸化マグネシウムと、
    気孔がダイヤモンド素地中に微細均一に分散分布した組
    織、および、 ９６〜９９．５％の理論密度比、を有するダイヤモンド
    基超高圧焼結材料で構成したことを特徴とする耐チッピ
    ング性のすぐれたダイヤモンド基超高圧焼結材料製切削
    工具。
  2. 【請求項２】 重量％で、炭酸 バリウムおよび／または炭酸マグネシウム：０．１
    〜２０％、 を含有し、残りが実質的に素地を構成するダイヤモンド
    からなる組成、並びに、上記炭酸バリウムおよび／また
    は炭酸マグネシウムがダイヤモンド素地中に微細均一に
    分散分布した組織、および、 ９９．５％超の理論密度比、を有するダイヤモンド基超
    高圧焼結材料で構成された切削工具素材に、 真空中、１０００〜１４００℃の温度に加熱保持、の条
    件で加熱処理を施して、上記素地中の炭酸塩を酸化物に
    化学変化せしめると同時に、素地中に微細均一に分散分
    布する気孔を形成することを特徴とする耐チッピング性
    のすぐれたダイヤモンド基超高圧焼結材料製切削工具の
    製造法。
JP05348131A 1993-12-24 1993-12-24 耐チッピング性のすぐれたダイヤモンド基超高圧焼結材料製切削工具およびその製造法 Expired - Lifetime JP3087555B2 (ja)

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DE4445765A DE4445765C2 (de) 1993-12-24 1994-12-21 Schneidwerkzeug aus einem gesinterten Material auf Diamantbasis und Verfahren zu dessen Herstellung
US08/361,386 US5624756A (en) 1993-12-24 1994-12-22 Diamond-based ultra-high-pressure-sintered material having excellent chipping resistance, cutting tool made therefrom, and method of manufacturing the cutting tool

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JP05348131A JP3087555B2 (ja) 1993-12-24 1993-12-24 耐チッピング性のすぐれたダイヤモンド基超高圧焼結材料製切削工具およびその製造法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100554093C (zh) * 2004-03-22 2009-10-28 索尼株式会社 贮存盒

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6258418B1 (en) 1998-06-24 2001-07-10 Ronald A. Rudder Method for producing diamond-tiled cooking utensils and other workpieces for durable stick-resistant surfaces
US7261753B2 (en) * 2002-07-26 2007-08-28 Mitsubishi Materials Corporation Bonding structure and bonding method for cemented carbide element and diamond element, cutting tip and cutting element for drilling tool, and drilling tool
JP4148969B2 (ja) * 2003-07-17 2008-09-10 ローツェ株式会社 低誘電率膜、及びその製造方法、並びそれを用いた電子部品
JP2006281399A (ja) * 2005-04-01 2006-10-19 Kobe Steel Ltd チタンおよびチタン合金材の高速切削方法
US9103172B1 (en) 2005-08-24 2015-08-11 Us Synthetic Corporation Polycrystalline diamond compact including a pre-sintered polycrystalline diamond table including a nonmetallic catalyst that limits infiltration of a metallic-catalyst infiltrant therein and applications therefor
US8734552B1 (en) 2005-08-24 2014-05-27 Us Synthetic Corporation Methods of fabricating polycrystalline diamond and polycrystalline diamond compacts with a carbonate material
US7635035B1 (en) 2005-08-24 2009-12-22 Us Synthetic Corporation Polycrystalline diamond compact (PDC) cutting element having multiple catalytic elements
US8727044B2 (en) 2011-03-24 2014-05-20 Us Synthetic Corporation Polycrystalline diamond compact including a carbonate-catalyzed polycrystalline diamond body and applications therefor
US9422770B2 (en) 2011-12-30 2016-08-23 Smith International, Inc. Method for braze joining of carbonate PCD
US9539703B2 (en) 2013-03-15 2017-01-10 Smith International, Inc. Carbonate PCD with a distribution of Si and/or Al
US9539704B2 (en) 2013-03-15 2017-01-10 Smith International, Inc. Carbonate PCD and methods of making the same
US9498867B2 (en) 2013-11-26 2016-11-22 Baker Hughes Incorporated Polycrystalline compacts, earth-boring tools including such compacts, and methods of fabricating polycrystalline compacts

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894850A (en) * 1973-10-19 1975-07-15 Jury Matveevich Kovalchuk Superhard composition material based on cubic boron nitride and a method for preparing same
US5270114A (en) * 1987-03-30 1993-12-14 Crystallume High thermal conductivity diamond/non-diamond composite materials
JP2795738B2 (ja) * 1990-07-13 1998-09-10 科学技術庁無機材質研究所長 ダイヤモンド基焼結材料

Cited By (1)

* Cited by examiner, † Cited by third party
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DE4445765A1 (de) 1995-06-29

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