JPS5873735A - Manufacturing method of diamond sintered body - Google Patents
Manufacturing method of diamond sintered bodyInfo
- Publication number
- JPS5873735A JPS5873735A JP56171247A JP17124781A JPS5873735A JP S5873735 A JPS5873735 A JP S5873735A JP 56171247 A JP56171247 A JP 56171247A JP 17124781 A JP17124781 A JP 17124781A JP S5873735 A JPS5873735 A JP S5873735A
- Authority
- JP
- Japan
- Prior art keywords
- diamond
- sintered body
- powder
- manufacturing
- sintered
- 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
Links
- 229910003460 diamond Inorganic materials 0.000 title claims description 37
- 239000010432 diamond Substances 0.000 title claims description 37
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000000843 powder Substances 0.000 claims description 10
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 239000011812 mixed powder Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 150000004767 nitrides Chemical class 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 2
- 229910017052 cobalt Inorganic materials 0.000 claims 1
- 239000010941 cobalt Substances 0.000 claims 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000005087 graphitization Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 229910002804 graphite Inorganic materials 0.000 description 7
- 239000010439 graphite Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 3
- 229910052723 transition metal Inorganic materials 0.000 description 3
- 150000003624 transition metals Chemical class 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- -1 borides Chemical class 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 本発明はダイヤモンド焼結体の製造法に関する。[Detailed description of the invention] The present invention relates to a method for manufacturing a diamond sintered body.
ダイヤモンド焼結体は高強度、°”−硬質で耐摩耗従来
、ダイヤモンド焼結体の製造法としては、（１） ダ
イヤモンドと各種金属の混合粉末、Ｃ２）ダイヤモンド
と炭化物、硼化物、窒化物等との混合粉末、 （５）ダ
イヤモンドとセラ電ツクとの混合粉末を、それぞれ出発
原料として使用し、高温高圧処理して焼結する方法が知
られている。Diamond sintered bodies have high strength, °''-hardness, and wear resistance. Conventionally, methods for manufacturing diamond sintered bodies include (1) mixed powder of diamond and various metals, C2) diamond and carbides, borides, nitrides, etc. (5) A method is known in which mixed powders of diamond and ceraelectric are used as starting materials and sintered by high-temperature and high-pressure treatment.
＋、 Ｌ−Ｌ、これ゛らの方法によって得られる焼結体
、’、’ｉ、ｊ、＝ｆ、Ｔｈｆｖ ｊ４使崩すると、複
合体で結合力が弱いため、刃こぼれ勢が起る欠点がある
。+, LL, sintered bodies obtained by these methods,','i,j,=f,Thfv j4When used up, the composite has a weak bonding force, so the disadvantage is that the blade tends to fall off. There is.
本発明はこの欠点を改轡せんとするものであり、従来の
ような複合焼結体でなく、実質的にダイヤモンドの、み
からなる焼結体を製造する方法を提供するＫある。The present invention aims to overcome this drawback and provides a method for producing a sintered body consisting essentially of diamond, rather than a composite sintered body as in the prior art.
本発明者らはダイヤモンド粒子を直接結合させる方法に
つい□て研究の結果、 □１） ダイヤモンド粉末
のみを高温高圧、下、熱力学的にダイヤモンドが安定な
領域にさらしても、ダイヤモンドの一部分が黒鉛に変換
し、高強度焼結体は得られなかった。The inventors conducted research on a method for directly bonding diamond particles and found that □1) Even if diamond powder is exposed to a thermodynamically stable region under high temperature and pressure, a portion of the diamond will become graphite. However, no high-strength sintered body was obtained.
２） 前記のダイヤモンドが黒鉛へ転移するｐを防止す
る目的で、溶融状態でダイヤモンド粒子間をうめること
が可能な金属、例えばＮｉ 、 Ｃｏ等を添加しても、
ダイヤモンド粒子は殆んど前記金属を介して結合し、高
強度焼結体は得られ表かった。2) In order to prevent the above-mentioned transition of diamond to graphite, even if metals that can fill the spaces between diamond particles in a molten state, such as Ni and Co, are added,
Most of the diamond particles were bonded through the metal, and a high-strength sintered body was obtained.
特公昭Ｎ −３２０４４号公報に開示されている方法、
すなわち、主としてダイヤモンドからなる層と、Ｃｏ
、 Ｆｅ 、 Ｎｉ・、 Ｉｎ 、 （３ｒ等の遷移金
属を含むカーバイト層を積層させて、ダイヤモンドの安
定領域の高温高圧にさらすと、カーバイド層から前記遷
移金属がダイヤモンド層に移動し、ダイヤモンド粒子間
に介在シ、ダイヤモンド粒）１１
子を結合させる方法が知られている。 ゛しかし、ダイ
ヤモンド層がダイヤモンドのみＫより構成する場合は、
前記遷移金属の移動は、ダイヤモンド粒子径が約３μｍ
以上の“も°のが約７０容量％以上存在する場合におい
てのみ行われる。しかし、その強度は満足し得られる程
度のものでは力かった。The method disclosed in Japanese Patent Publication No. Sho N-32044,
That is, a layer consisting mainly of diamond and a layer consisting of Co
When carbide layers containing transition metals such as , Fe, Ni. A method is known in which diamond grains (diamond grains) are bonded together.゛However, if the diamond layer is composed only of diamond and K,
The migration of the transition metal is achieved when the diamond particle size is approximately 3 μm.
This is done only when the above components are present in an amount of about 70% by volume or more. However, the strength is not sufficiently high.
しかし、前記６）の方法で１、ダイヤモンド層に〃容量
％以上の黒鉛を添加、シ次場合は、ダイヤモンド粉末の
みの場合と著しく異なる結果が得られた。すなわち―ダ
イヤモンド層に黒鉛が存在すると、カーバイド層からの
遷移金属の移動が顕著と更に研究の結果、ダイヤモンド
粉末に黒鉛を添加すると、前記の如く強固なダイヤモン
ド焼結体は得られるが、これらの焼結体の組織を詳細に
調べたところ、シ竺しは異常に大きく成長したダイヤモ
ンド粒子が一察される。このような焼結体組織の不均質
性は工具用刃先等として使用する場合、刃こぼれや欠け
をおこす欠点が生ずる。However, when using method 6) above, 1. Adding more than 1% by volume of graphite to the diamond layer, results were obtained that were significantly different from those obtained using only diamond powder. In other words, when graphite is present in the diamond layer, migration of transition metals from the carbide layer is significant.As a result of further research, it was found that when graphite is added to diamond powder, a strong diamond sintered body can be obtained as described above, but these A detailed examination of the structure of the sintered body revealed that the wrinkles were diamond particles that had grown abnormally large. Such non-uniformity of the structure of the sintered body causes the disadvantage that when used as a cutting edge of a tool, etc., the blade may be chipped or chipped.
しかるに、ダイヤモンド粉末を例８．戸真空中ま金から
なる合金容器中に充填するか、あるいは該合金基体と原
料混合物を積層した状態で加熱処理することが好ましい
。これにより黒鉛のダイヤモンド化が促進される。However, diamond powder in Example 8. It is preferable to fill the alloy into an alloy container made of a vacuum chamber, or heat-treat the alloy substrate and the raw material mixture in a laminated state. This promotes diamond formation of graphite.
本発明の方法によると、ダイヤモ、〈ド粒子が直接結合
した実質的にダイヤモンドのみからなる焼結体が容易に
得られ、得られた焼結体は均質な組織を有し、高強度で
、切削時の刃先として使用した場合、刃こぼれ等がなく
、長寿命である優れた一一を有する。According to the method of the present invention, a sintered body consisting essentially only of diamond to which diamond particles are directly bonded can be easily obtained, and the obtained sintered body has a homogeneous structure, high strength, When used as a cutting edge during cutting, it has excellent properties such as no blade damage and long life.
ヤモンド粉末との混合割合を変えて混合物を作り、この
混合物を通常の方法で圧粉体を作った。この圧粉体を５
ＷＣ−ｔｔ重量％′ＣＯ粉体からなる成形体を作り、こ
れと積層して、５ｇキロバールの圧力下で１４１００℃
で加熱して焼結体を作った。なお、比較例としてｐ、ｖ
、ａ （ポリビニルクロライド）を黒鉛をダイヤモンド
粉末と混合して、前記と同様にしてまた同一条件下で焼
結した。その結果は次の通やであった。Mixtures were prepared by varying the mixing ratio with Yamond powder, and a green compact was made from this mixture in a conventional manner. This powder compact is 5
A molded body made of WC-tt wt%'CO powder was made, laminated with this, and heated at 14100°C under a pressure of 5 g kilobar.
was heated to produce a sintered body. As a comparative example, p, v
, a (polyvinyl chloride) was mixed with graphite and diamond powder and sintered as before and under the same conditions. The results were as follows.
本発明の方法：、で得られた１、コ、３の焼結体を′１
・−９，。Method of the present invention: The sintered bodies of 1, 3 and 3 obtained in
・-9,.
工具刃先形状Ｋｔｄ工し、鋳鉄の切削時における摩耗量
を測定したところ、市販品の２倍以上の耐摩耗性を示し
た。When the cutting edge shape of the tool was machined by Ktd and the amount of wear was measured when cutting cast iron, it showed wear resistance more than twice that of commercially available products.
比較例である参、ｊ、ぶの焼結体の耐摩耗性は本発明実
施例１．２．３と峰は同郷であったが、五１−８１合金
の切削仕上面あらさは／ 、 Ｊ 、 ＪＫ比べて２倍
以上あらい結果が得られた。The wear resistance of the sintered bodies of Comparative Examples 1.2.3 and 1.2.3 was the same as that of Example 1.2.3 of the present invention, but the roughness of the cut surface of the 51-81 alloy was /, J. , the results were more than twice as rough compared to JK.
１、−１暇Ｊ1, -1 time J
Claims (1)
１００容量％黒鉛化した黒鉛化ダイヤモンドのλＯ〜７
ｊ容量％との混合粉末を、鉄。 コバルト、ニッケルの少゛〈と４／１１の金−を５重量
う以上含む金属谷金、炭化物合金、窒化物合金、硼化物
合金蜘１ら選一□れた合金容器に充填しまたはこれらの
合金一体に積層させた状態で、ダイヤモンド＝害茎安定
温度圧力領域で、少くとも１ｉｓｏ℃以上の温度で一゛
′鶴して焼結す、ることを特徴−とするダイヤモンド焼
結体の製造法。 ２ 黒鉛化するダイヤモンド粒径が平均２〜／２μｍで
ある特許請求の範囲第１項記゛載の製造法。[Claims] t Diamond powder and diamond powder surface
λO~7 of graphitized diamond with 100% graphitization by volume
Mixed powder with j volume %, iron. Fill an alloy container selected from metal valleys, carbide alloys, nitride alloys, and boride alloys containing 5% or more of cobalt, nickel, and 4/11 gold by weight; Manufacture of a diamond sintered body, characterized in that the alloy is laminated integrally and sintered at a temperature of at least 1 iso Celsius or higher in a stable temperature and pressure range of diamond. Law. 2. The manufacturing method according to claim 1, wherein the average diameter of diamond particles to be graphitized is 2 to 2 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56171247A JPS59563B2 (en) | 1981-10-26 | 1981-10-26 | Manufacturing method of diamond sintered body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56171247A JPS59563B2 (en) | 1981-10-26 | 1981-10-26 | Manufacturing method of diamond sintered body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5873735A true JPS5873735A (en) | 1983-05-04 |
| JPS59563B2 JPS59563B2 (en) | 1984-01-07 |
Family
ID=15919772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56171247A Expired JPS59563B2 (en) | 1981-10-26 | 1981-10-26 | Manufacturing method of diamond sintered body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59563B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0174546A2 (en) * | 1984-09-08 | 1986-03-19 | Sumitomo Electric Industries, Ltd. | Diamond sintered body for tools and method of manufacturing the same |
| JPS62274034A (en) * | 1986-05-23 | 1987-11-28 | Toyota Central Res & Dev Lab Inc | Manufacturing method of polycrystalline diamond sintered body by reaction sintering |
| WO2005068113A1 (en) * | 2004-01-13 | 2005-07-28 | Iljin Diamond Co., Ltd. | Method of sintering body having high hardness |
| WO2005068114A1 (en) * | 2004-01-13 | 2005-07-28 | Iljin Diamond Co., Ltd. | Method of sintering body having high hardness |
| JP2023505968A (en) * | 2019-12-13 | 2023-02-14 | エレメント シックス （ユーケイ） リミテッド | Polycrystalline diamond with iron-bearing binder |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54131611A (en) * | 1978-04-04 | 1979-10-12 | Sumitomo Electric Industries | Production of diamond sintered body |
-
1981
- 1981-10-26 JP JP56171247A patent/JPS59563B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54131611A (en) * | 1978-04-04 | 1979-10-12 | Sumitomo Electric Industries | Production of diamond sintered body |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0174546A2 (en) * | 1984-09-08 | 1986-03-19 | Sumitomo Electric Industries, Ltd. | Diamond sintered body for tools and method of manufacturing the same |
| JPS62274034A (en) * | 1986-05-23 | 1987-11-28 | Toyota Central Res & Dev Lab Inc | Manufacturing method of polycrystalline diamond sintered body by reaction sintering |
| WO2005068113A1 (en) * | 2004-01-13 | 2005-07-28 | Iljin Diamond Co., Ltd. | Method of sintering body having high hardness |
| WO2005068114A1 (en) * | 2004-01-13 | 2005-07-28 | Iljin Diamond Co., Ltd. | Method of sintering body having high hardness |
| JP2023505968A (en) * | 2019-12-13 | 2023-02-14 | エレメント シックス （ユーケイ） リミテッド | Polycrystalline diamond with iron-bearing binder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59563B2 (en) | 1984-01-07 |
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