JPS5869779A - Special form hard sintered body and manufacture - Google Patents
Special form hard sintered body and manufactureInfo
- Publication number
- JPS5869779A JPS5869779A JP56169274A JP16927481A JPS5869779A JP S5869779 A JPS5869779 A JP S5869779A JP 56169274 A JP56169274 A JP 56169274A JP 16927481 A JP16927481 A JP 16927481A JP S5869779 A JPS5869779 A JP S5869779A
- Authority
- JP
- Japan
- Prior art keywords
- sintered body
- hard sintered
- diamond
- irregularly shaped
- boron nitride
- 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
Landscapes
- Ceramic Products (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や高圧相型窒化硼素を主体とする
改良された硬質焼結体とその製造法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved hard sintered body mainly composed of diamond or high-pressure phase boron nitride, and a method for manufacturing the same.
ダイヤモンドや高圧相型窒化硼素を主体とする硬質焼結
体工具が広く用いられるようになってきている。Hard sintered tools mainly made of diamond or high-pressure phase boron nitride are becoming widely used.
これらはいずれも第１図に示したように超硬台付けなど
により固着されて用いられている。As shown in FIG. 1, all of these are used by being fixed using a cemented carbide table or the like.
このように用いられている硬質焼結体工具でも通常の超
硬合金工具と同様に切り屑処理が問題となる場合がある
。通常の超硬合金工具ではこの切り屑処理のためにいわ
ゆる砥ぎ付はプレーカーと称する砥石で溝状凹部を刃先
付近に形成したものや超硬チップ型押し時にチップ表面
に凹凸形状を形成し、この凹凸により切り屑処理を行う
といった方法がとられている。Even with the hard sintered tools used in this way, chip disposal may pose a problem as with normal cemented carbide tools. In order to dispose of chips, normal cemented carbide tools use a so-called sharpening tool that uses a whetstone called a maker to form groove-like recesses near the cutting edge, or that creates an uneven shape on the chip surface when stamping the cemented carbide chip. A method has been adopted in which chips are disposed of using these irregularities.
硬質焼結体工具に於ても同様の方法により切Ｍ処理が行
える工具ができればよいが種々の技術的困難性があり実
現してぃなかった。It would be nice to be able to create a tool that can perform the M-cutting process on hard sintered tools using the same method, but this has not been possible due to various technical difficulties.
すなわち、ダイヤモンドや高圧相型窒化硼素などの硬質
焼結体は高硬度であるため難研削性で、超硬合金の如き
砥ぎ付はプレーカーをつけることは非常に困難で、仮に
無理矢理加工できたとしても高価なものにつき経済的に
合わないものとなってしまう。In other words, hard sintered materials such as diamond and high-pressure phase boron nitride are difficult to grind due to their high hardness, and it is extremely difficult to use a breaker to sharpen materials such as cemented carbide, so even if you cannot forcibly process them. Even if it were, it would be expensive and not economically suitable.
又、焼結のままで複雑な形状を有するダイヤモンド焼結
体の製造方法が日本特許昭５６１６１５２号に開示され
ているが、これはダイヤモンド焼結体に限定される上、
鉄又は鉄合金を焼結時の容量として、かつこの容量を焼
結体と接しておくため、不可避的に容量中のＦｅ元素が
焼結体中に大量に拡散してしまうという問題がある。Furthermore, Japanese Patent No. 5,616,152 discloses a method for manufacturing a diamond sintered body having a complicated shape while sintered, but this method is limited to diamond sintered bodies.
Since iron or an iron alloy is used as a capacitor during sintering and this capacitor is kept in contact with the sintered body, there is a problem that a large amount of Fe element in the capacitor inevitably diffuses into the sintered body.
本発明はこれらの技術的問題点を解決し、切り屑処理の
機能を有する突起又は四部を表面に有する硬質焼結体及
びその製造方法を提供するものである。The present invention solves these technical problems and provides a hard sintered body having protrusions or four parts on its surface having a chip disposal function, and a method for manufacturing the same.
以下実施例により本発明内容を説明する。The contents of the present invention will be explained below with reference to Examples.
第１図は本発明に基づく第１の実施例である。FIG. 1 shows a first embodiment based on the present invention.
硬質焼結体の表面に溝状凹部（１１）が形成されている
。この溝を有する硬質焼結体を工具として利用するには
第１図（イ）図中に示したように破線部Ｍ′で扇形状に
切断し、これを第２図に示した如く三角形台金３の一隅
に鑞付けする。このようにすれば表面溝（１１）が三角
形チップの切刃に沿って存在−し、この溝が切屑処理の
役割を果す。A groove-like recess (11) is formed on the surface of the hard sintered body. To use this hard sintered body with grooves as a tool, cut it into a fan shape along the broken line M' as shown in FIG. Braze one corner of gold 3. In this way, a surface groove (11) is present along the cutting edge of the triangular chip, and this groove plays the role of chip disposal.
第８図は本発明に基づく第２の実施例である。FIG. 8 shows a second embodiment based on the present invention.
本例では硬質焼結体表面の中心付近に半円状突起（１３
）が形成されている。これを工具として利用するにはや
はり破線ｃｃ’で示した扇形状に切断し、これを第４図
に示すように三角形台金の一隅に鑞付けする。この場合
は刃先に位置した半円状突起により切屑処理が行われる
。実施例では溝及び半円状突起の例を示したがこれに限
らず、溝状凹部てもよいのは勿論である。In this example, a semicircular protrusion (13
) is formed. To use this as a tool, cut it into a fan shape as indicated by the broken line cc' and braze it to one corner of the triangular base metal as shown in FIG. In this case, chips are removed by a semicircular protrusion located at the cutting edge. In the embodiment, an example of a groove and a semicircular protrusion is shown, but the present invention is not limited to this, and it goes without saying that a groove-like recess may also be used.
さて、このような表面に凹凸を有する硬質焼結体の製造
方法は以下の通りである。Now, a method for manufacturing such a hard sintered body having an uneven surface is as follows.
通常硬質焼結体は金属容器中に入れた状態で焼結される
がまず金属容器中に超硬合金又は鋼などよりなる合金を
入れ、次にその上に硬質焼結体原料粉末又はその型押体
を入れる。更にその上から超硬合金又は鋼などよりなり
、その下面に目的とする硬質焼結体表面の凹凸と丁度逆
の凹凸を形成した板をその凹凸面が硬質焼結体層側にあ
るように配置する。なお、下部台金と硬質焼結体との界
面及び上部の凹凸面を有する板と硬質焼結体との界面に
それぞれ適当な中間層を配置してやってもよい。この金
属容器をそのまま或いは真空封入な１どした上で超高圧
装置中でダイヤモンド又は高圧相窒化硼素が安定な圧力
、温度条件で焼結する。Normally, a hard sintered body is sintered in a metal container. First, an alloy made of cemented carbide or steel is placed in the metal container, and then the raw material powder for the hard sintered body or its mold is placed on top of it. Insert the pressing body. Furthermore, from above, a plate made of cemented carbide or steel, on the lower surface of which is formed with unevenness exactly opposite to the unevenness of the target hard sintered body surface, is placed so that the uneven surface is on the hard sintered body layer side. Deploy. Note that appropriate intermediate layers may be arranged at the interface between the lower base metal and the hard sintered body and at the interface between the upper plate having an uneven surface and the hard sintered body. With this metal container as it is or sealed in a vacuum, diamond or high-pressure phase boron nitride is sintered under stable pressure and temperature conditions in an ultra-high pressure device.
焼結後取り出した焼結体の金属容器を除去した後、硬質
焼結体表面の下部に凹凸を有する超硬合金又は鋼などよ
ゆなる板をたとえばショツトブラストにより除去する。After removing the metal container of the sintered body taken out after sintering, a plate of cemented carbide or steel having irregularities on the lower part of the surface of the hard sintered body is removed by, for example, shot blasting.
この際、この上部板と硬質焼結体とは硬度が格段に異な
るためショツトブラストにより上部板が容易に除去され
ても硬質焼結体は何ら加工を受けないのである。なおシ
ョノトブブスト用の砥粒としてはＳＩＣｎどが適当で、
数分のブラストにより上部板は完全に除去される。この
ようにして目的とする表面に凹凸を有する硬質焼結体を
得ることができる。At this time, since the hardness of the upper plate and the hard sintered body is significantly different, even if the upper plate is easily removed by shot blasting, the hard sintered body is not processed at all. In addition, SICn is suitable as an abrasive grain for Shonotobubst.
After a few minutes of blasting, the top plate is completely removed. In this way, a hard sintered body having an uneven surface can be obtained.
以上記したように本発明により硬質焼結体工具であって
も切屑処理が可能な工具を得ることができ、硬質焼結体
工具の適用用途を拡大することができる。As described above, according to the present invention, it is possible to obtain a tool capable of processing chips even if it is a hard sintered tool, and the applications of the hard sintered tool can be expanded.
第１図乃至第４図は本発明の実施例である異型硬質体の
例を示すものであり、第１図（イ）、第８図０）は上面
図、第１図（ロ）、第２図（ロ）、及び第３図（ロ）は
断面正面図、第２図（イ）、第４図は斜視図である。
■＝硬質焼結体、２：台金、ｌｌ：溝状凹部、１２：平
面部、１３：半円状突起。
Ｂ゛
（４）
１
（ロ）
７２図
芳３図
１３ヌ
−
し
汀４図Figures 1 to 4 show examples of atypical hard bodies that are embodiments of the present invention, and Figures 1 (a) and 8 (0) are top views, and Figures 1 (b) and 8 (0) are top views. 2(B) and 3(B) are sectional front views, and FIGS. 2(A) and 4 are perspective views. ■ = hard sintered body, 2: base metal, ll: groove-shaped recess, 12: flat part, 13: semicircular protrusion. B゛(4) 1 (b) Figure 72 Figure 3 Figure 13 Figure 4
Claims (1)
混合物を主体とする硬質焼結体において、硬質焼結体表
面に突起又は凹所を有することを特徴とする異形硬質焼
結体。 （２）前記硬質焼結体がダイヤモンドを７０容量％以上
含有するダイヤモンド焼結体であることを特徴とする特
許請求の範囲第（１）項記載の異形硬質焼結体。 （８）前記硬質焼結体が高圧相型窒化硼素を５５容量％
以上含有する高圧相型窒化硼素焼結体であることを特徴
とする特許請求の範囲第（１）項記載の異形硬質焼結体
。 （４）硬質焼結体原料粉末を超硬合金台金上に配置し、
その上に目的とする表面凹凸に対して逆の凹凸を有する
超硬合金又は鋼などよりなる板を凹凸面が硬質焼結体層
と相対するように置き、これら全体を金属容器中に入れ
、この金属容量を超高圧・高温装置中でダイヤモンド又
は高圧相窒化硼素が安定な圧力・温度条件で焼結し、焼
結後取り出した焼結体上部の下面に凹凸を有する超硬合
金又は鋼などよりなる板を機械的、化学的その他適当な
方法により除去し、表面に突起又は四部を有する異形硬
質焼結体を得ることを特徴とする異形硬質焼結体の製造
法。 （５）前記、下面に凹凸を有する超硬合金又は鋼などよ
りなる板を除去する方法がシ、ヨツトプラストであるこ
とを特徴とする特許請求の範囲第（４）項、第（５）項
記載の異形硬質焼結体の製造法。 、（６）前記硬質
焼結体がダイヤモンドを７０容量％以上含有するダイヤ
モンド焼結体であることを特徴とする特許請求の範囲第
（４）、（５）項記載の異形硬質焼結体の製造法。 （７）前記硬質焼結体が高圧相型窒化硼素を５５容量％
以上含有する高圧相型−化硼素であることを特徴とする
特許請求の範囲第（４）、（５）項記載の異形硬質焼結
体の製造法。[Claims] (1) A hard sintered body mainly composed of diamond, high-pressure phase boron nitride, or a mixture thereof, characterized by having protrusions or recesses on the surface of the hard sintered body. Sintered body. (2) The irregularly shaped hard sintered body according to claim (1), wherein the hard sintered body is a diamond sintered body containing 70% by volume or more of diamond. (8) The hard sintered body contains 55% by volume of high-pressure phase boron nitride.
The irregularly shaped hard sintered body according to claim (1), which is a high-pressure phase type boron nitride sintered body containing the above. (4) Placing the hard sintered raw material powder on the cemented carbide base metal,
Thereon, a plate made of cemented carbide or steel having an unevenness opposite to the desired surface unevenness is placed so that the uneven surface faces the hard sintered body layer, and the whole is placed in a metal container, This metal capacitor is sintered in an ultra-high pressure and high temperature equipment under pressure and temperature conditions where diamond or high pressure phase boron nitride is stable, and after sintering, the sintered body is taken out. 1. A method for producing a irregularly shaped hard sintered body, which comprises removing a plate made of the same material by mechanical, chemical or other appropriate methods to obtain an irregularly shaped hard sintered body having protrusions or four parts on the surface. (5) Claims (4) and (5), characterized in that the method for removing the plate made of cemented carbide, steel, or the like having unevenness on its lower surface is by Yotoplast. A method for manufacturing irregularly shaped hard sintered bodies. (6) The irregularly shaped hard sintered body according to claims (4) and (5), wherein the hard sintered body is a diamond sintered body containing 70% by volume or more of diamond. Manufacturing method. (7) The hard sintered body contains 55% by volume of high-pressure phase boron nitride.
A method for manufacturing a irregularly shaped hard sintered body according to claims (4) and (5), characterized in that the high-pressure phase type boron compound contains the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56169274A JPS5869779A (en) | 1981-10-21 | 1981-10-21 | Special form hard sintered body and manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56169274A JPS5869779A (en) | 1981-10-21 | 1981-10-21 | Special form hard sintered body and manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5869779A true JPS5869779A (en) | 1983-04-26 |
Family
ID=15883464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56169274A Pending JPS5869779A (en) | 1981-10-21 | 1981-10-21 | Special form hard sintered body and manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5869779A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4629373A (en) * | 1983-06-22 | 1986-12-16 | Megadiamond Industries, Inc. | Polycrystalline diamond body with enhanced surface irregularities |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS539804A (en) * | 1976-07-14 | 1978-01-28 | Sumitomo Electric Industries | Diamond sintered articles and manufacture |
-
1981
- 1981-10-21 JP JP56169274A patent/JPS5869779A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS539804A (en) * | 1976-07-14 | 1978-01-28 | Sumitomo Electric Industries | Diamond sintered articles and manufacture |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4629373A (en) * | 1983-06-22 | 1986-12-16 | Megadiamond Industries, Inc. | Polycrystalline diamond body with enhanced surface irregularities |
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