JPH05194032A - Production of diamond-based ultra-high pressure sintered material for highly heat-resistant machining tool - Google Patents
Production of diamond-based ultra-high pressure sintered material for highly heat-resistant machining toolInfo
- Publication number
- JPH05194032A JPH05194032A JP4031589A JP3158992A JPH05194032A JP H05194032 A JPH05194032 A JP H05194032A JP 4031589 A JP4031589 A JP 4031589A JP 3158992 A JP3158992 A JP 3158992A JP H05194032 A JPH05194032 A JP H05194032A
- Authority
- JP
- Japan
- Prior art keywords
- diamond
- pressure
- powder
- ultra
- high pressure
- 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.)
- Withdrawn
Links
- 239000010432 diamond Substances 0.000 title claims abstract description 39
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 39
- 239000000463 material Substances 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000003754 machining Methods 0.000 title abstract 2
- 239000000843 powder Substances 0.000 claims abstract description 27
- 238000005245 sintering Methods 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 5
- 238000005520 cutting process Methods 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 21
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 238000003763 carbonization Methods 0.000 claims description 4
- 239000011812 mixed powder Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract 1
- 239000012071 phase Substances 0.000 description 10
- 239000011159 matrix material Substances 0.000 description 7
- 230000020169 heat generation Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910018125 Al-Si Inorganic materials 0.000 description 1
- 229910018523 Al—S Inorganic materials 0.000 description 1
- 229910018520 Al—Si Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Landscapes
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、すぐれた耐熱性を有
し、したがって例えば高発熱を伴なうＳｉ：１０〜３０
重量％含有のＡｌ−Ｓｉ系合金やアルミナ（Ａｌ
2 Ｏ3 ）焼結体などの難削材の高速切削などに切削工具
として用いた場合にすぐれた耐摩耗性を発揮するダイヤ
モンド基超高圧焼結材料の製造法に関するものである。FIELD OF THE INVENTION The present invention has excellent heat resistance, and therefore, for example, Si: 10-30 with high heat generation.
Al-Si based alloy and alumina (Al
2 O 3 ) The present invention relates to a method for producing a diamond-based ultra-high pressure sintered material that exhibits excellent wear resistance when used as a cutting tool for high-speed cutting of difficult-to-cut materials such as sintered bodies.
【０００２】[0002]
【従来の技術】従来、例えば特公昭５２−１２１２６号
公報に記載される通り、超高圧焼結装置の超高圧高温発
生部内に、ダイヤモンド粉末層と鉄族金属粉末含有層と
を積層装入し、 温度：１３００〜１６００℃、 圧力：４．５万気圧以上、 の条件で超高圧加熱して、上記鉄族金属を上記ダイヤモ
ンド粉末層中に溶浸させると共に、この溶浸した鉄族金
属相によってダイヤモンド粉末相互の焼結をはかって、
ダイヤモンド素地に、全体に占める割合で１〜２０容量
％の鉄族金属を分散させた組織を有するダイヤモンド基
超高圧焼結材料を製造する方法が知られており、またこ
れらのダイヤモンド基超高圧焼結材料が上記のＡｌ−Ｓ
ｉ系合金やＡｌ2 Ｏ3 焼結体などの切削に切削工具とし
て用いられていることも知られている。2. Description of the Related Art Conventionally, as described in, for example, Japanese Patent Publication No. 52-12126, a diamond powder layer and an iron group metal powder containing layer are stacked and charged in an ultrahigh pressure and high temperature generating portion of an ultrahigh pressure sintering apparatus. Temperature: 1300 to 1600 ° C., Pressure: 45,000 atm or more, ultrahigh pressure heating is performed to infiltrate the iron group metal into the diamond powder layer and the infiltrated iron group metal phase. By sintering the diamond powder with each other,
A method for producing a diamond-based ultra-high pressure sintered material having a structure in which 1 to 20% by volume of an iron group metal is dispersed in a diamond matrix is known, and these diamond-based ultra-high pressure sintered materials are also known. The binding material is Al-S described above.
It is also known to be used as a cutting tool for cutting i-based alloys and Al 2 O 3 sintered bodies.
【０００３】[0003]
【発明が解決しようとする課題】一方、近年の切削加工
に対する省力化の要求は厳しく、これに伴ない切削速度
は増々高速化の傾向にあるが、上記の従来ダイヤモンド
基超高圧焼結材料を高い発熱を伴なう上記の難削材の高
速切削に切削工具として用いた場合、耐熱性不足が原因
で摩耗の進行が著しいのが現状である。On the other hand, in recent years, the demand for labor saving in the cutting process has been strict, and the cutting speed tends to increase with the increase in the demand, but the conventional diamond-based ultra-high pressure sintered material described above is used. When used as a cutting tool for high-speed cutting of the above-mentioned difficult-to-cut materials accompanied by high heat generation, the current situation is that wear progresses significantly due to insufficient heat resistance.
【０００４】[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、耐熱性のすぐれたダイヤモンド
基超高圧焼結材料を開発すべく研究を行なった結果、ダ
イヤモンド粉末の焼結促進成分として、Ｔｉ，Ｚｒ、お
よびＣｒを特定し、これらの金属成分のうちの１種以上
を、ダイヤモンド粉末との合量に占める割合で１〜２０
容量％の割合でダイヤモンド粉末と混合し、この場合粉
末を超高圧焼結装置の超高圧高温発生部内に装入し、 温度：１７００〜１９００℃、 圧力：６．５万気圧以上、 の条件で超高圧高温加熱を施すと、溶融した上記金属が
ダイヤモンド粉末相互の焼結を促進するように作用すめ
ため、ダイヤモンド素地に上記金属が分散した組織を有
する焼結体が形成されるようになり、ついで、この焼結
体を２０００℃以上の温度で加熱すると、上記金属分散
相が素地のダイヤモンドによって炭化されて炭化物とな
ることから、ダイヤモンド素地に、Ｔｉ，Ｚｒ、および
Ｃｒのうちの１種以上の炭化物が、全体に占める割合で
１〜２０容量％の割合で分散した組織を有するダイヤモ
ンド基超高圧焼結材料が得られるようなり、この結果の
ダイヤモンド基超高圧焼結材料は、特に素地に分散する
上記炭化物によってすぐれた耐熱性を具備し、したがっ
てこれを高発熱を伴なう上記の難削材の高速切削などに
用いた場合にもすぐれた耐摩耗性を示し、長期に亘って
すぐれた切削性能を発揮するという研究結果を得たので
ある。Therefore, the present inventors have
From the above viewpoints, as a result of research to develop a diamond-based ultra-high pressure sintered material having excellent heat resistance, Ti, Zr, and Cr were specified as sintering promoting components of diamond powder, and One or more of the metal components are contained in a proportion of 1 to 20 in the total amount with the diamond powder.
It is mixed with diamond powder in a volume% ratio, and in this case, the powder is charged into the ultra-high pressure and high temperature generating part of the ultra-high pressure sintering device, and the temperature is 1700 to 1900 ° C and the pressure is 65,000 atm or more under the following conditions. When subjected to ultra high pressure and high temperature heating, the molten metal acts to promote the mutual sintering of diamond powders, so that a sintered body having a structure in which the metal is dispersed in the diamond matrix is formed, Then, when this sintered body is heated at a temperature of 2000 ° C. or higher, the metal dispersed phase is carbonized by the diamond of the base material to form a carbide, so that at least one of Ti, Zr, and Cr is added to the diamond base material. The diamond-based ultra-high pressure sintered material having a structure in which the carbides are dispersed in a proportion of 1 to 20% by volume in the whole is obtained. The high-pressure sintered material has excellent heat resistance due to the above-mentioned carbides dispersed in the base material, and therefore has excellent wear resistance even when it is used for high-speed cutting of the above-mentioned difficult-to-cut materials with high heat generation. That is, the research results show that it exhibits excellent cutting performance and exhibits excellent cutting performance over a long period of time.
【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超高圧焼結装置の超高圧高温発生
部内に、ダイヤモンド粉末と、全体に占める割合で１〜
２０容量％のＴｉ，Ｚｒ、およびＣｒのうちの１種以上
からなる金属粉末の混合粉末を装入し、 温度：１７００〜１９００℃、 圧力：６．５万気圧以上、 の条件で超高圧高温加熱して、ダイヤモンド素地に上記
金属が分散した組織を有する焼結体とし、ついで、上記
焼結体を２０００℃以上の温度に加熱して、上記金属分
散相をダイヤモンド素地との炭化反応により炭化物分散
相とすること、からなる耐熱性にすぐれた切削工具用ダ
イヤモンド基超高圧焼結材料の製造法に特徴を有するも
のである。The present invention has been made based on the above-mentioned research results. In the ultrahigh-pressure and high-temperature generating portion of the ultrahigh-pressure sintering apparatus, the diamond powder and the total proportion thereof are 1 to 1.
20% by volume of Ti, Zr, and mixed powder of metal powder consisting of at least one of Cr are charged, and temperature: 1700 to 1900 ° C., pressure: 65,000 atm or more, ultra high pressure and high temperature It is heated to form a sintered body having a structure in which the above metal is dispersed in the diamond matrix, and then the above sintered body is heated to a temperature of 2000 ° C. or higher, and the metal dispersed phase is carbonized by a carbonization reaction with the diamond matrix. It is characterized by a method for producing a diamond-based ultra-high pressure sintered material for a cutting tool, which is excellent in heat resistance and comprises a dispersed phase.
【０００６】つぎに、この発明の方法において、製造条
件を上記の通りに限定した理由を説明する。 （ａ） 金属粉末の割合 金属粉末の割合、すなわち炭化物分散相の割合が１容量
％未満では、ダイヤモンド粉末表面の前記金属によるぬ
れが十分に行なわれず、このためダイヤモンド粉末相互
の焼結が不十分となるばかりでなく、炭化反応による炭
化物分散相の割合も１容量％未満となってしまい、所望
の耐摩耗性および耐熱性を確保することができず、一方
その割合が２０容量％を越えると、相対的にダイヤモン
ド素地の割合が少なくなって耐摩耗性が急激に低下する
ようになることから、その割合を１〜２０容量％と定め
た。Next, the reason why the manufacturing conditions are limited as described above in the method of the present invention will be explained. (A) Ratio of metal powder If the ratio of the metal powder, that is, the ratio of the carbide dispersed phase is less than 1% by volume, the diamond powder surface is not sufficiently wetted by the metal, and therefore the mutual sintering of the diamond powder is insufficient. In addition, the ratio of the carbide dispersed phase due to the carbonization reaction becomes less than 1% by volume, and the desired wear resistance and heat resistance cannot be secured. On the other hand, when the ratio exceeds 20% by volume. Since the proportion of the diamond matrix is relatively small and the wear resistance is sharply reduced, the proportion is set to 1 to 20% by volume.
【０００７】（ｂ） 超高圧高温加熱条件 温度が１７００℃未満でも、また圧力が６．５万気圧未
満でも焼結が不十分となり、所望の組織をもった焼結体
を製造することができず、一方温度が１９００℃を越え
ると、素地のダイヤモンドと上記金属とが反応して炭化
物を形成するようになり、この結果上記金属の液相によ
るダイヤモンド焼結促進作用が失なわれるようになるこ
とから、温度を１７００〜１９００℃、圧力を６．５万
気圧以上と定めた。(B) Ultrahigh-pressure high-temperature heating condition Even if the temperature is less than 1700 ° C. or the pressure is less than 65,000 atm, sintering becomes insufficient and a sintered body having a desired structure can be produced. On the other hand, when the temperature exceeds 1900 ° C., the base diamond and the above metal react to form a carbide, and as a result, the diamond sintering promoting action by the liquid phase of the above metal is lost. Therefore, the temperature was set to 1700 to 1900 ° C and the pressure was set to 65,000 atm or higher.
【０００８】（ｃ） 炭化温度 その温度が２０００℃未満では、金属分散相のダイヤモ
ンド素地との反応がきわめて遅く、これを炭化物とする
のに長時間を要し、工業的でないことから、その温度を
２０００℃以上と定めた。(C) Carbonization temperature If the temperature is less than 2000 ° C., the reaction of the metal dispersed phase with the diamond matrix is extremely slow, and it takes a long time to convert this into a carbide, which is not industrial, so that temperature Was determined to be 2000 ° C or higher.
【０００９】[0009]
【実施例】つぎに、この発明の方法を実施例により具体
的に説明する。原料粉末として、０．４〜５０μｍの範
囲内の所定の平均粒径を有するダイヤモンド粉末、Ｔｉ
粉末、Ｚｒ粉末、Ｃｒ粉末、Ｃｏ粉末、およびＮｉ粉末
を用意し、これら原料粉末を表１に示される配合割合に
配合し、ボールミルにて２４時間混合した後、この混合
粉末をベルト型超高圧焼結装置の超高圧高温発生部内に
装入し、これに同じく表１に示される条件で超高圧高温
加熱を施し、引続いて炭化反応を施すことにより本発明
法１〜７、並びに前記炭化反応を行なわない従来法１〜
３を実施し、それぞれ直径：１８mm×厚さ：２．５mmの
寸法をもったダイヤモンド基超高圧焼結材料を製造し
た。EXAMPLES Next, the method of the present invention will be specifically described by way of Examples. As a raw material powder, diamond powder having a predetermined average particle diameter within the range of 0.4 to 50 μm, Ti
Powder, Zr powder, Cr powder, Co powder, and Ni powder were prepared, these raw material powders were compounded in the compounding ratios shown in Table 1, and mixed in a ball mill for 24 hours, and then this mixed powder was belt-type ultrahigh pressure. It is charged into the ultrahigh pressure and high temperature generating part of the sintering machine, and is subjected to ultrahigh pressure and high temperature heating under the conditions shown in Table 1 as well. Conventional method 1 without reaction
3 was carried out to produce diamond-based ultra-high pressure sintered materials each having a diameter of 18 mm and a thickness of 2.5 mm.
【００１０】[0010]
【表１】 [Table 1]
【００１１】ついで、この結果得られた各種の焼結材料
について、ビッカース硬さに測定すると共に、切削チッ
プを切り出し、 被削材：ＳｉＣ分散Ａｌ合金の丸棒、 切削速度：４００ｍ／min.、 送り：０．１mm／rev.、 切込み：０．２mm、 切削時間：１０分、 の条件でのＡｌ合金の連続高速切削試験、並びに、 被削材：ＺｒＯ2 焼結体の丸棒、 切削速度：４０ｍ／min.、 送り：０．０５mm／rev.、 切込み：０．１mm、 切削時間１０分、 の条件でのセラミックスの連続高速切削試験を行ない、
いずれの試験でも切刃の逃げ面摩耗幅を測定した。これ
らの測定結果を表２に示した。また表２にはそれぞれの
焼結材料の炭化物分散相または金属分散相の種類も合せ
て示した。Then, various sintered materials obtained as a result were measured for Vickers hardness, cutting chips were cut out, and a work material was a round bar of SiC dispersed Al alloy, a cutting speed was 400 m / min. Feed: 0.1 mm / rev., Depth of cut: 0.2 mm, Cutting time: 10 minutes, Continuous high speed cutting test of Al alloy, Work material: Round bar of ZrO 2 sintered body, Cutting speed : 40 m / min., Feed: 0.05 mm / rev., Depth of cut: 0.1 mm, cutting time: 10 minutes
In each test, the flank wear width of the cutting edge was measured. The results of these measurements are shown in Table 2. Table 2 also shows the types of the carbide dispersed phase or the metal dispersed phase of each sintered material.
【００１２】[0012]
【表２】 [Table 2]
【００１３】[0013]
【発明の効果】表１，２に示される結果から、本発明法
１〜７によって製造されたダイヤモンド基超高圧焼結材
料は、いずれもダイヤモンド素地に分散する炭化物の作
用で、従来法１〜３によって製造された金属分散相のダ
イヤモンド基超高圧焼結材料に比して、すぐれた耐熱性
を具備することから、高い発熱を伴なうＡｌ合金やＺｒ
Ｏ2 焼結体の高速切削で、すぐれた耐摩耗性を長期に亘
って発揮することが明らかである。From the results shown in Tables 1 and 2, the diamond-based ultra-high pressure sintered materials produced by the methods 1 to 7 of the present invention all have the action of carbides dispersed in the diamond matrix, and the conventional method 1 to Compared with the diamond-based ultra-high pressure sintered material of the metal dispersed phase produced by No. 3, it has excellent heat resistance, and therefore Al alloy and Zr which have high heat generation.
It is clear that high-speed cutting of the O 2 sintered body exhibits excellent wear resistance for a long period of time.
【００１４】上述のように、この発明の方法によれば、
すぐれた耐熱性を有するダイヤモンド基超高圧焼結材料
を製造することができ、したがってこれを高い発熱を伴
なう各種難削材の高速切削などに切削工具として用いた
場合に、すぐれた切削性能を著しく長期に亘って発揮す
るなど工業上有用な効果がもたらさせるのである。As mentioned above, according to the method of the present invention,
It is possible to manufacture a diamond-based ultra-high pressure sintered material with excellent heat resistance. Therefore, when it is used as a cutting tool for high-speed cutting of various difficult-to-cut materials with high heat generation, it has excellent cutting performance. It has an industrially useful effect such that the effect is exerted over a very long period of time.
Claims (1)
に、ダイヤモンド粉末と、全体に占める割合で１〜２０
容量％のＴｉ，Ｚｒ、およびＣｒのうちの１種以上から
なる金属粉末の混合粉末を装入し、 温度：１７００〜１９００℃、 圧力：６．５万気圧以上、 の条件で超高圧高温加熱して、ダイヤモンド素地に上記
金属が分散した組織を有する焼結体とし、 ついで、上記焼結体を２０００℃以上の温度に加熱し
て、上記金属分散相をダイヤモンド素地との炭化反応に
より炭化物分散相とすること、を特徴とする耐熱性にす
ぐれた切削工具用ダイヤモンド基超高圧焼結材料の製造
法。1. Diamond powder in the ultrahigh pressure and high temperature generating portion of the ultrahigh pressure sintering apparatus and 1 to 20 in proportion to the whole.
Ultra high pressure and high temperature heating under the conditions of: mixed powder of metal powder consisting of at least one of Ti, Zr, and Cr in volume%, temperature: 1700 to 1900 ° C., pressure: 650,000 atm or more. Then, a sintered body having a structure in which the above-mentioned metal is dispersed in the diamond base is obtained, and then the above-mentioned sintered body is heated to a temperature of 2000 ° C. or higher, and the metal-dispersed phase is dispersed by the carbonization reaction with the diamond base. A method for producing a diamond-based ultra-high pressure sintered material for a cutting tool, which has excellent heat resistance and is characterized by a phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4031589A JPH05194032A (en) | 1992-01-22 | 1992-01-22 | Production of diamond-based ultra-high pressure sintered material for highly heat-resistant machining tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4031589A JPH05194032A (en) | 1992-01-22 | 1992-01-22 | Production of diamond-based ultra-high pressure sintered material for highly heat-resistant machining tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05194032A true JPH05194032A (en) | 1993-08-03 |
Family
ID=12335379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4031589A Withdrawn JPH05194032A (en) | 1992-01-22 | 1992-01-22 | Production of diamond-based ultra-high pressure sintered material for highly heat-resistant machining tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05194032A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021070091A (en) * | 2019-10-30 | 2021-05-06 | 博 石塚 | High hardness diamond massive tool material and manufacturing method for the same |
| WO2022085438A1 (en) * | 2020-10-22 | 2022-04-28 | 住友電工ハードメタル株式会社 | Diamond sintered body and tool provided with diamond sintered body |
-
1992
- 1992-01-22 JP JP4031589A patent/JPH05194032A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021070091A (en) * | 2019-10-30 | 2021-05-06 | 博 石塚 | High hardness diamond massive tool material and manufacturing method for the same |
| WO2022085438A1 (en) * | 2020-10-22 | 2022-04-28 | 住友電工ハードメタル株式会社 | Diamond sintered body and tool provided with diamond sintered body |
| JPWO2022085438A1 (en) * | 2020-10-22 | 2022-04-28 |
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