JPH0354180A - Production of diamond-coated sintered material - Google Patents
Production of diamond-coated sintered materialInfo
- Publication number
- JPH0354180A JPH0354180A JP1190827A JP19082789A JPH0354180A JP H0354180 A JPH0354180 A JP H0354180A JP 1190827 A JP1190827 A JP 1190827A JP 19082789 A JP19082789 A JP 19082789A JP H0354180 A JPH0354180 A JP H0354180A
- Authority
- JP
- Japan
- Prior art keywords
- diamond
- sintered body
- metal
- sintered
- sintered material
- 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.)
- Pending
Links
- 239000010432 diamond Substances 0.000 title claims abstract description 63
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 60
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000000463 material Substances 0.000 title abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 15
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 239000002344 surface layer Substances 0.000 claims abstract description 5
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000012808 vapor phase Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 5
- 238000001947 vapour-phase growth Methods 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract description 3
- 229910052804 chromium Inorganic materials 0.000 abstract description 3
- 238000000151 deposition Methods 0.000 abstract description 3
- 238000010306 acid treatment Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 239000010408 film Substances 0.000 description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000000873 masking effect Effects 0.000 description 3
- QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- -1 ferrous metals Chemical class 0.000 description 2
- 238000004050 hot filament vapor deposition Methods 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、嗣摩耗性、嗣剥離性、靭性に優れ、アルミニ
ウム合金等の非鉄金属、セラミックス、プラスチック等
の切削工具として好適なダイヤモンド彼覆焼結体の製造
法に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a diamond-covered material which has excellent wear resistance, peelability and toughness, and is suitable as a cutting tool for non-ferrous metals such as aluminum alloys, ceramics, plastics, etc. This invention relates to a method for producing a sintered body.
気十〇或長法ダイヤモンドの合成技術が確立したのに伴
って、これを用いた各種の酎摩耗材料やダイヤモンド被
覆工具が開発されている。With the establishment of the synthesis technology for long-length diamond, various types of wear materials and diamond-coated tools using this diamond have been developed.
従来、ダイヤモンド彼覆工具は、■超硬合金やタングス
テンを基材物質としてこの表面に気相成長法によってダ
イヤモンドを成膜したもの、■ダイヤモンド焼結基材表
面にダイヤモンドを成膜したものがある。Conventionally, diamond encrusted tools include: ■ those in which a diamond film is formed on the surface of a cemented carbide or tungsten base material by vapor phase growth, and ■ those in which a diamond film is formed on the surface of a diamond sintered base material. .
特に焼結ダイヤモンド上に戊長ずる気相成長広ダイヤモ
ンドは、基材と強固に結合する。In particular, vapor-grown wide diamonds grown on sintered diamonds are strongly bonded to the base material.
しかしながら、前者は、基材物質とダイヤモンド膜との
結合強度が弱く、剥離し易い欠点がある。However, the former has the disadvantage that the bonding strength between the base material and the diamond film is weak and it is easy to peel off.
また後者は、ダイヤモンド膜との密着性が大幅に改善さ
れ、ダイヤモンド焼結体に較べてｌれた性能を示すが、
ダイヤモンド焼結体は周知のように焼結触媒としてＦｅ
，Ｎｉ，Ｃｏ，Ｍｎ，Ｃｒ等の金属が添加されている。In addition, the latter has significantly improved adhesion with the diamond film and exhibits superior performance compared to diamond sintered bodies.
As is well known, diamond sintered bodies use Fe as a sintering catalyst.
, Ni, Co, Mn, Cr, and other metals are added.
そのためこれらが結合面に介在し、さらにＦｅ，Ｎｉ，
Ｃｏ等が介在すると、気相戊長法ダイヤモンド膜が析出
する際、金属を触媒として、タイヤモントが黒鉛逆変換
等により、析出しにくなり、焼結体との密着性は向上す
るとぼいえ未だ不充分であった。Therefore, these are present at the bonding surface, and Fe, Ni,
If Co or the like is present, when a vapor-phase elongated diamond film is deposited, the metal will act as a catalyst, and Tiremont will be prevented from depositing due to graphite inversion, etc., and the adhesion to the sintered body will be improved. It was still insufficient.
本発明は、上記の問題を解決し、ダイヤモンド焼結体と
ダイヤモンド膜との密着性が充分強固なダイヤモンド被
覆焼結体の製造法を提供することを目的とする。An object of the present invention is to solve the above-mentioned problems and provide a method for manufacturing a diamond-coated sintered body in which the adhesion between the diamond sintered body and the diamond film is sufficiently strong.
上記の目的を達或するため、本発明の方法においては、
金属を少量含むダイヤモンド焼結体の表層部の金属を溶
解除去し、これに気相威長法によりダイヤモンドを被覆
する。In order to achieve the above object, in the method of the present invention,
The metal on the surface layer of a diamond sintered body containing a small amount of metal is dissolved and removed, and then diamond is coated on this body by the vapor deposition method.
この方法は、特に切削工具の刃に有効に利用出来る。This method can be particularly effectively used for cutting tool blades.
本発明に用いる焼結体は、粒径１５μｍ以下のダイヤモ
ンド粒子を用い、これに１．０〜Ｉ Ｏ．Ｏｖｏ（１％
のＦｅ，Ｎｉ，Ｃｏ，Ｍｎ，Ｃｒ金属等を添加して焼結
する公知の方法によって、靭性の優れたものが得られる
。使用するダイヤモンド粒子が１５μｍを越えると焼結
体の靭性が低下する。The sintered body used in the present invention uses diamond particles with a particle size of 15 μm or less, and has a particle size of 1.0 to IO. Ovo (1%
A material with excellent toughness can be obtained by a known method of adding Fe, Ni, Co, Mn, Cr metal, etc. and sintering it. If the diamond particles used exceed 15 μm, the toughness of the sintered body decreases.
以下添加する金属としてＣｏを用い、切削工具を製造す
る場合を代表例として説明する。The case where a cutting tool is manufactured using Co as an added metal will be described below as a representative example.
先ず、第ｌ図に示すように、超硬母材１にダイヤモンド
焼結体をロウ付けするための段差部１ａを形戊する。次
いで、この段差部１ａの形状に合わせて、ワイヤーカッ
トした焼結体（超硬ベース２ａにダイヤモンド焼結体２
ｂが固着しているもの）２を第２図に示すように上記段
差部１ａにロウ付けする。このロウ付けされた焼結体２
を、工具研削盤を用いて、側面研摩および先端Ｒ付けを
行い、第３図に示すように工具形状に加工する。First, as shown in FIG. 1, a stepped portion 1a for brazing a diamond sintered body to a cemented carbide base material 1 is formed. Next, a wire-cut sintered body (a diamond sintered body 2 is placed on the carbide base 2a) according to the shape of this stepped portion 1a.
2) to which b is fixed is brazed to the stepped portion 1a as shown in FIG. This brazed sintered body 2
Using a tool grinder, the sides are polished and the tip is rounded to form a tool shape as shown in FIG.
この加工された工具のダイヤモンド焼結体２ｂ以外の部
分を耐酸性合成樹脂でマスクし、酸処理して含有するＣ
ｏを溶出する。上記酸としては、ＣＯを溶出するもので
あれば特に制限ないか、殆どすべての金属を溶解する王
水を用いるのか便利である。また、Ｃｏを除去するのは
表層部分のみでよく、１０〜ｔｏｏｏμｍの範囲、特に
５０〜６０μｍが好ましい。このような処理を行った後
、ダイヤモンド焼結体２ｂの外面に、気相成長法ダイヤ
モンドを成膜する。膜の厚さは１〜５０μｍが望ましい
。膜厚が１μｍ以下では被覆効果が低く、５０μｍを越
えると、不必要に厚く、経済的に不利となる。The parts of this machined tool other than the diamond sintered body 2b are masked with an acid-resistant synthetic resin and treated with an acid to contain carbon.
elute o. The acid mentioned above is not particularly limited as long as it can elute CO, or it is convenient to use aqua regia which dissolves almost all metals. Moreover, it is sufficient to remove Co only from the surface layer portion, and it is preferably in the range of 10 to too μm, particularly 50 to 60 μm. After performing such treatment, a vapor phase growth diamond film is formed on the outer surface of the diamond sintered body 2b. The thickness of the film is preferably 1 to 50 μm. If the film thickness is less than 1 μm, the coating effect will be low, and if it exceeds 50 μm, it will be unnecessarily thick and economically disadvantageous.
上記ダイヤモンドの成膜に用いられる気相成長法は特に
制限なく、熱フィラメン｝ＣＶＤ法、マイクロ波法、高
周波法、プラズマジェット法がいずれも使用出来る。The vapor phase growth method used to form the diamond film is not particularly limited, and any of the hot filament CVD method, microwave method, high frequency method, and plasma jet method can be used.
上記ＣＶＤダイヤモンド被覆の際、ダイヤモンド焼結体
２ｂ以外をＣｏ，Ｆｅ，Ｎｉの電解コートでマスクした
後、行ってもよいが、マスクを行わず、ダイヤモンド焼
結体２ｂ以外にもダイヤモンド被覆を行っても差支えな
い。During the CVD diamond coating described above, it may be performed after masking the parts other than the diamond sintered body 2b with an electrolytic coating of Co, Fe, and Ni, but the diamond coating may be performed on other parts than the diamond sintered body 2b without masking. There is no problem.
上記方法によって形戊されたダイヤモンド被覆は、ダイ
ヤモンド膜形戊時に焼結体基材表面にＣＯが存在しない
ので、これが間に介在することなく、またｃｏによるダ
イヤモンド→黒鉛の逆変換が促進されず、さらにダイヤ
モンド面にダイヤモンドが直接成長するので、その密着
性は極めて高い。In the diamond coating formed by the above method, since there is no CO present on the surface of the sintered body substrate at the time of forming the diamond film, there is no intervening CO, and the reverse conversion of diamond → graphite by CO is not promoted. Furthermore, since diamond grows directly on the diamond surface, its adhesion is extremely high.
なお、焼結体面に成膜した後ロウ付けするのは、戊膜後
の研摩が出来ないので不適当である。Note that brazing after forming a film on the surface of the sintered body is not appropriate because polishing cannot be performed after the film is applied.
本発明の方法により、現在のダイヤモンド焼結体技術で
は不可能なダイヤモンド単味の多結晶ダイヤモンド工具
の作製が可能となり、現在の一般ダイヤモンド焼結体工
具において、残存するＣｏに起因する（Ｃｏによるダイ
ヤモンドー黒鉛逆変換、ダイヤモンドとＣＯの熱膨張率
の差にょる外応力等）、７５０’Ｃ以上の高温下での嗣
摩耗性、強度の低下等の問題が解決され、靭性か高く、
剥離しない、耐久性の優れたダイヤモンド彼蕩か行われ
る。The method of the present invention makes it possible to manufacture polycrystalline diamond tools made of single diamond, which is impossible with current diamond sintered compact technology. Problems such as diamond-graphite inverse conversion, external stress due to the difference in thermal expansion coefficient between diamond and CO, etc.), abrasion resistance at high temperatures of 750'C or higher, and a decrease in strength have been solved, and the toughness is high.
Made of highly durable diamonds that will not peel off.
次に実施例、比較例を示して本発明の方法を説明する。 Next, the method of the present invention will be explained with reference to Examples and Comparative Examples.
実施例ｌ
１０μｍ以下のダイヤモンド微扮をＣｏ５ＶｏＮ％とな
るように混合して焼結した、ダイヤモンド焼結体の上面
を研摩した後、ワイヤーカノトして、超硬母材の段差部
にロウ付けした。これを工具研削盤を用いて、ＳＰＭＮ
４２１（工只の形状，・精度等を表示する周知の記号）
の形状に、１０分間かけて研摩した。Example 1 After polishing the upper surface of a diamond sintered body in which fine particles of diamond of 10 μm or less were mixed and sintered so as to have Co5VoN%, the top surface of the diamond sintered body was polished, wire-cut, and brazed to the step part of the carbide base material. . Using a tool grinder, SPMN
421 (a well-known symbol that indicates the shape, accuracy, etc. of the workpiece)
The shape was polished for 10 minutes.
次いで、このロウ付けした工具表面の汚れ、曲分を除去
し、ダイヤモンド焼結体以外の部分に、Ｃｏを電解コー
トによって析出させてマスキングした後、熱フィラメン
トＣＶＤ法により、５μｍの厚さにダイヤモンドの薄膜
を成長させた。Next, dirt and curves on the surface of the brazed tool were removed, and after masking the parts other than the diamond sintered body by electrolytically depositing Co, diamond was coated to a thickness of 5 μm using hot filament CVD. A thin film was grown.
この工具を用いて、ＡＲ−１７％Ｓｉ合金を、切削速度
：３００ｍ／分、切込み：０．５ｍｍ、送り： Ｏ ．
］ ｍｍ／ ｒｅｖの条件で、１０分切削した。Using this tool, AR-17%Si alloy was cut at a cutting speed of 300 m/min, depth of cut: 0.5 mm, and a feed rate of O.
] It was cut for 10 minutes under the conditions of mm/rev.
切削後、工具の刃先を調べたが、剥離、摩耗は認められ
なかった。After cutting, the cutting edge of the tool was examined, but no peeling or wear was observed.
比較例１
実施例ｌにおける焼結体を超硬母材の段差部にロウ付け
して研摩した工具を用い、同じ切削試験を行った。試験
終了後、工具の刃を調へたところ、焼結体が被切削材に
接する逃げ面に、約２０μｍ幅の摩耗か観察された。Comparative Example 1 The same cutting test was conducted using a tool in which the sintered body in Example 1 was brazed to a stepped portion of a cemented carbide base material and polished. After the test was completed, when the tool blade was inspected, wear with a width of about 20 μm was observed on the flank where the sintered body was in contact with the workpiece.
比較例２
実施例ｌにおいて、王水によるＣｏの除去を行わなかっ
た以外は同じにして切削試験を行った。Comparative Example 2 A cutting test was conducted in the same manner as in Example 1 except that Co was not removed using aqua regia.
その結果、ダイヤモンド膜の一部に剥離が認められた。As a result, peeling was observed in a part of the diamond film.
以上述べたように、本発明の方法においては、焼結体と
ダイヤモンド薄膜か強力に密着し、靭性に優れたものか
得られ、これを工具に用いた場合、単味のダイヤモンド
多結晶工具として、従来のダイヤモンド焼結工具、或は
これをダイヤモンドで被覆した工具に比べて、酎摩耗性
、耐剥性、嗣久性が大幅に向上する。As described above, in the method of the present invention, a sintered body and a diamond thin film can be strongly adhered to each other and have excellent toughness, and when used in a tool, it can be used as a single diamond polycrystalline tool. Compared to conventional diamond sintered tools or diamond-coated tools, the wear resistance, peeling resistance, and durability are significantly improved.
第ｌ図ないし第３図は、本発明の方広により工具を作製
する手順を示す図である。
１・・・・・・超硬母材、 １ａ・・・・・・段
差部、２・・・・・・焼結体、 ２ａ・・・・
・超硬ベース、２ｂ・・・・・・ダイヤモンド焼結体。FIGS. 1 to 3 are diagrams showing the procedure for manufacturing a tool using the square according to the present invention. 1... Carbide base material, 1a... Step portion, 2... Sintered body, 2a...
- Carbide base, 2b...diamond sintered body.
Claims (2)
属を溶解除去し、これに気相法によりダイヤモンド被覆
することを特徴とするダイヤモンド被覆焼結体の製造法
。(1) A method for producing a diamond-coated sintered body, which comprises dissolving and removing metal from the surface layer of a diamond sintered body containing a small amount of metal, and coating it with diamond by a vapor phase method.
の刃である請求項（１）記載のダイヤモンド被覆焼結体
の製造法。(2) The method for producing a diamond-coated sintered body according to claim 1, wherein the diamond sintered body containing a small amount of metal is a blade of a cutting tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1190827A JPH0354180A (en) | 1989-07-24 | 1989-07-24 | Production of diamond-coated sintered material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1190827A JPH0354180A (en) | 1989-07-24 | 1989-07-24 | Production of diamond-coated sintered material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0354180A true JPH0354180A (en) | 1991-03-08 |
Family
ID=16264425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1190827A Pending JPH0354180A (en) | 1989-07-24 | 1989-07-24 | Production of diamond-coated sintered material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0354180A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0619382A1 (en) * | 1993-04-09 | 1994-10-12 | Sumitomo Electric Industries, Ltd. | Hard sintered tool and manufacturing method thereof |
| WO1999044776A1 (en) * | 1998-03-02 | 1999-09-10 | Sumitomo Electric Industries, Ltd. | Sintered diamond tool and method for manufacturing the same |
| WO2000028106A1 (en) * | 1998-11-10 | 2000-05-18 | Kennametal Inc. | Polycrystalline diamond member and method of making the same |
| JP4878661B1 (en) * | 2011-10-12 | 2012-02-15 | ヒノックス商事株式会社 | Solar-powered mosquito repellent |
-
1989
- 1989-07-24 JP JP1190827A patent/JPH0354180A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0619382A1 (en) * | 1993-04-09 | 1994-10-12 | Sumitomo Electric Industries, Ltd. | Hard sintered tool and manufacturing method thereof |
| WO1999044776A1 (en) * | 1998-03-02 | 1999-09-10 | Sumitomo Electric Industries, Ltd. | Sintered diamond tool and method for manufacturing the same |
| US6528159B1 (en) | 1998-03-02 | 2003-03-04 | Sumitomo Electric Industries, Ltd. | Sintered diamond tool and method for manufacturing the same |
| WO2000028106A1 (en) * | 1998-11-10 | 2000-05-18 | Kennametal Inc. | Polycrystalline diamond member and method of making the same |
| US6344149B1 (en) | 1998-11-10 | 2002-02-05 | Kennametal Pc Inc. | Polycrystalline diamond member and method of making the same |
| JP4878661B1 (en) * | 2011-10-12 | 2012-02-15 | ヒノックス商事株式会社 | Solar-powered mosquito repellent |
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