JP6721615B2 - Diamond carbide composite material - Google Patents
Diamond carbide composite material Download PDFInfo
- Publication number
- JP6721615B2 JP6721615B2 JP2017563423A JP2017563423A JP6721615B2 JP 6721615 B2 JP6721615 B2 JP 6721615B2 JP 2017563423 A JP2017563423 A JP 2017563423A JP 2017563423 A JP2017563423 A JP 2017563423A JP 6721615 B2 JP6721615 B2 JP 6721615B2
- Authority
- JP
- Japan
- Prior art keywords
- diamond
- cemented carbide
- boron nitride
- particles
- cubic boron
- 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.)
- Active
Links
- 229910003460 diamond Inorganic materials 0.000 title claims description 124
- 239000010432 diamond Substances 0.000 title claims description 124
- 239000002131 composite material Substances 0.000 title claims description 40
- 239000002245 particle Substances 0.000 claims description 73
- 229910052582 BN Inorganic materials 0.000 claims description 18
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 18
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 239000011230 binding agent Substances 0.000 claims description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims description 8
- 239000011574 phosphorus Substances 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 4
- 238000007731 hot pressing Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 150000002894 organic compounds Chemical class 0.000 claims 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims 1
- 229910052721 tungsten Inorganic materials 0.000 claims 1
- 239000010937 tungsten Substances 0.000 claims 1
- 239000011435 rock Substances 0.000 description 9
- 238000009412 basement excavation Methods 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000012798 spherical particle Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 229940099259 vaseline Drugs 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Earth Drilling (AREA)
- Powder Metallurgy (AREA)
Description
本発明はダイヤモンド粒子を表面に付着させた超硬質粒子を含有する緻密で高硬度なダイヤモンド超硬複合材料及びその製造方法に関係する。 The present invention relates to a dense and high hardness diamond cemented carbide composite material containing ultrahard particles having diamond particles adhered to the surface thereof and a method for producing the same.
石油、天然ガス、地熱などのエネルギー開発に用いる掘削用ビットには、岩石を掘削するだけでなく、掘削した穴径を保持する特性が必要となる。図１に典型的な掘削用ビット（トリコンビット）の断面略図を示す（ビット１：３個あるビットの一つ）。例えば、掘削した穴の側壁とビットが接触する箇所（ゲージ部）２が岩石との摩擦で摩耗すると掘削穴は先細りになり、ビット交換した後の次のビットも側壁を再度掘削しなければならなくなる。従ってビットが激しく損傷するだけでなく、側壁の掘削により多くの時間がかかってしまうという問題がある。一方でビットの取り換えには膨大な費用を要するため、ビットの長寿命化も強く求められている。このため、掘削用ビットのゲージ部の耐摩耗性を向上させるべく、高価なダイヤモンド（人工、天然）を含めた、あらゆる耐摩耗性の材料が検討されている。 Excavation bits used for energy development such as oil, natural gas, and geothermal need not only excavate rocks, but also have the property of retaining the diameter of the excavated hole. FIG. 1 shows a schematic cross-sectional view of a typical drill bit (tricone bit) (bit 1: one of three bits). For example, if the part (gauge part) 2 where the side wall of the excavated hole comes into contact with the bit wears due to friction with the rock, the excavated hole becomes tapered, and the side wall of the next bit after exchanging the bit must be excavated again. Disappear. Therefore, not only is the bit severely damaged, but it also takes a lot of time to excavate the side wall. On the other hand, replacement of a bit requires a huge amount of money, so that the life of the bit is also strongly demanded. Therefore, in order to improve the wear resistance of the gauge portion of the excavating bit, various wear resistant materials including expensive diamond (artificial and natural) have been studied.
硬岩掘削時に最もよく用いられている多結晶ダイヤモンド焼結体（人工ダイヤモンド）（ＰＤＣ；Polycrystalline Diamond Compact）は最高の硬さと耐摩耗性を備えているが、岩石を削り取っていく研削性はない。ＰＤＣチップをゲージ部に適用したビットでは、ゲージ摩耗は強化されるが、研削性がないために、側壁からのビットに対する面圧８が増加する。その圧力はビットの構造上、ベアリング部３に影響を及ぼし、掘削ビットの寿命を短くする原因となる。ゲージ部２に掘削性を持たせるために、チップを頭出しして（１ｍｍ程度ゲージ面から突出させて）側壁を砕き落とす方法が適用されているが、カッターの回転により軸部に振動が発生し、シール部４への土砂の噛み込みが助長され、その土砂によりベアリング部が摩耗し、最終的に回転不良を引き起こす原因となる。 Polycrystalline diamond compact (PDC), which is most commonly used when excavating hard rock, has the highest hardness and wear resistance, but it does not have the grindability to scrape off rocks. .. In the bit in which the PDC chip is applied to the gauge portion, the gauge wear is strengthened, but the surface pressure 8 on the bit from the side wall is increased because it has no grindability. Due to the structure of the bit, the pressure affects the bearing portion 3 and shortens the life of the drill bit. In order to make the gauge part 2 excavable, a method is used in which the tip is cueed (protruding from the gauge surface by about 1 mm) and the side wall is broken down, but vibration of the shaft part occurs due to rotation of the cutter. However, the entrapment of earth and sand into the seal portion 4 is promoted, and the earth and sand causes wear of the bearing portion, which eventually causes poor rotation.
この問題を解決するためには、ゲージ部２のチップに、硬岩石を削り取るような研削性を持たせればよい。これを目的として、本願の発明者等は、超硬合金中にダイヤモンド粒子を分散して、耐摩耗性と研削性を併せ持った複合材料で形成されたチップを開発した（特許文献１）。このチップをビットゲージ部に適用することで、ゲージが岩石との摩擦で摩耗することによる掘削抗の先細りを防ぐだけでなく、側壁を研削して面圧８を減少させることでベアリング部を保護し、掘削ビットの長寿命化に貢献することができる。また、側壁を研削できるので、チップ頭出しを行う必要もなく、振動によるシールへの土砂噛み込みを減少させ、結果として掘削ビットの長寿命化に貢献することができる。 In order to solve this problem, the tip of the gauge portion 2 may be provided with grindability for scraping hard rock. For this purpose, the inventors of the present application have developed a chip formed of a composite material having both wear resistance and grindability by dispersing diamond particles in a cemented carbide (Patent Document 1). Applying this tip to the bit gauge part not only prevents the taper of the excavation resistance due to the wear of the gauge due to friction with rocks, but also protects the bearing part by grinding the side wall and reducing the surface pressure 8. In addition, it can contribute to prolonging the life of the drill bit. Further, since the side wall can be ground, it is not necessary to locate the tip of the chip, and it is possible to reduce the amount of sand and sand trapped in the seal due to vibration, and as a result, it is possible to contribute to the long life of the drill bit.
上記ダイヤモンド複合材料の研削力はダイヤモンド粒子の大きさに比例する。ダイヤモンド粒子が大きいとチップ表面からの突出量が大きくなり、岩石に食い込む面積が大きくなるためである。一方で、ダイヤモンド粒子の大きさの増加とともにダイヤモンドに対する応力と衝撃値は増加するが、ダイヤモンドの靭性が本来低いために、ダイヤモンド自体が欠損し破壊されやすくなる。製造上においても、ダイヤモンド粒子と超硬粉末との比重差が大きいため、ダイヤモンド粒子が大きくなると、超硬合金内に均等に分散させて複合材料を形成することが困難となる。これらの理由から、特許文献１のダイヤモンド複合材料において、研削性、耐摩耗性を保持しながら、単純にダイヤモンド粒子を大きくすることは難しく、この方法で研削性をさらに向上させることは困難である。 The grinding force of the diamond composite material is proportional to the size of diamond particles. This is because when the diamond particles are large, the amount of protrusion from the chip surface is large, and the area that bites into the rock is large. On the other hand, although the stress and impact value on the diamond increase as the size of the diamond particles increases, the diamond itself is inherently low in toughness, so that the diamond itself is apt to be broken and broken. Also in manufacturing, since the difference in specific gravity between the diamond particles and the cemented carbide powder is large, when the diamond particles become large, it becomes difficult to disperse them evenly in the cemented carbide to form a composite material. For these reasons, in the diamond composite material of Patent Document 1, it is difficult to simply increase the size of the diamond particles while maintaining the grindability and wear resistance, and it is difficult to further improve the grindability by this method. ..
本発明の目的は、特許文献１のダイヤモンド粒子の代わりに、球状の超硬合金を核としてその周囲を核の径よりも十分小さいダイヤモンド粒子で包囲したダイヤモンド集合体を提供することである。さらに本発明の目的は、超硬合金中にダイヤモンド粒子を分散させた特許文献１のダイヤモンド複合材料のダイヤモンド粒子の代わりにこのダイヤモンド集合体を用いることにより、研削性をさらに強化したダイヤモンド超硬複合材料を提供することにある。 An object of the present invention is to provide a diamond aggregate in which spherical cemented carbide is used as a core instead of the diamond particles of Patent Document 1, and the periphery thereof is surrounded by diamond particles that are sufficiently smaller than the diameter of the core. Further, an object of the present invention is to use the diamond aggregate instead of the diamond particles of the diamond composite material of Patent Document 1 in which diamond particles are dispersed in a cemented carbide, thereby further improving the grindability. To provide the material.
本発明の別の目的は、ダイヤモンド粒子等の超硬質粒子表面の炭化を防ぐために、焼結温度を低温にする事が可能なダイヤモンド超硬複合材料、及びその製造方法を提供することにある。 Another object of the present invention is to provide a diamond cemented carbide composite material capable of lowering the sintering temperature in order to prevent carbonization of the surface of ultrahard particles such as diamond grains, and a method for producing the same.
本発明によるダイヤモンド超硬複合材料は、炭化タングステン（ＷＣ）を主成分とする超硬合金の球状の粒子を核とし、ＷＣを主成分として燐（Ｐ）を含有する鉄族金属を結合材として、少なくとも１層の複数の微小なダイヤモンド粒子で前記核の表面を均一に被覆し、固着させたダイヤモンド集合体を含み、複数の前記ダイヤモンド集合体が、炭化タングステン（ＷＣ）を主成分として燐（Ｐ）を含有する鉄族金属を含む超硬合金組織中に分散されている。 The diamond cemented carbide composite material according to the present invention has spherical particles of cemented carbide containing tungsten carbide (WC) as a main component as a core, and an iron group metal containing WC as a main component and containing phosphorus (P) as a binder. , A diamond aggregate in which the surface of the core is uniformly coated and fixed with at least one layer of a plurality of fine diamond particles, the plurality of diamond aggregates containing tungsten carbide (WC) as a main component and phosphorus ( P) is dispersed in the cemented carbide structure containing the iron group metal.
好ましくは、前記ダイヤモンド粒子の粒径は５μｍ〜２００μｍである。 Preferably, the diamond particles have a particle size of 5 μm to 200 μm.
本発明は、さらに前記ダイヤモンド集合体の製造方法を提供する。該製造方法は、核となるＷＣを主成分とする超硬合金の球状粒子の表面に粘着材を塗布する工程と、少なくとも１層の複数のダイヤモンド粒子を、ＷＣを主成分としてＰを含有する鉄族金属からなる結合材と混合して前記核の表面を均一に被覆するように付着させる工程と、真空中で加熱して前記ダイヤモンド粒子の層を前記核の表面に固着させる工程とを含む。 The present invention further provides a method for producing the diamond aggregate. The manufacturing method includes a step of applying an adhesive to the surface of spherical particles of cemented carbide containing WC as a core, which is a core, and a plurality of diamond particles of at least one layer, and P containing WC as a main component. A step of admixing with a binder made of an iron group metal so as to uniformly cover the surface of the core; and a step of heating in a vacuum to fix the layer of diamond particles to the surface of the core. ..
本発明は、さらに前記ダイヤモンド超硬複合材料の製造方法を提供する。該製造方法は、前記ダイヤモンド集合体と、炭化タングステンＷＣを主成分としてＰを含有する鉄族金属を含む超硬合金とを混合する工程と、該混合物を型に投入して予備プレスを行う工程と、それに続いて高真空下で昇温した後ホットプレスする工程とを含む。 The present invention further provides a method for producing the diamond cemented carbide composite material. The manufacturing method comprises a step of mixing the diamond aggregate and a cemented carbide containing an iron group metal containing tungsten carbide WC as a main component and an iron group metal, and a step of performing preliminary pressing by putting the mixture into a mold. And a subsequent step of hot pressing after raising the temperature under high vacuum.
本発明では、前記ダイヤモンド粒子の代わりにｃＢＮの粒子を用いてもよい。 In the present invention, particles of cBN may be used instead of the diamond particles.
本発明は、特許文献１のダイヤモンド粒子の代わりに、超硬金属を核としてその周囲を小さいダイヤモンド粒子で包囲したダイヤモンド集合体を超硬合金中に分散させることにより、従来のダイヤモンド複合材料の耐摩耗性と研削性を強化した上に、耐衝撃性も向上させることができる。 According to the present invention, instead of the diamond particles of Patent Document 1, a diamond aggregate in which a cemented carbide is used as a nucleus and surrounded by small diamond particles is dispersed in a cemented carbide to improve the durability of a conventional diamond composite material. In addition to enhancing wear resistance and grindability, impact resistance can also be improved.
本発明においても、岩石との摩耗で地の超硬合金組織が摩耗し、ダイヤモンド集合体が表面から部分的に露出することでダイヤモンド超硬複合材料表面に凹凸を自然形成させ、研削性を向上させている。ダイヤモンド集合体の最表面は小さいダイヤモンド粒子であるため、従来と同等以上の耐摩耗性を保持している。さらに、ダイヤモンド集合体に掛かる衝撃を、ダイヤモンドよりも靭性のあるダイヤモンド集合体の核を形成する硬い超硬合金により緩和させることができるため、耐衝撃性も向上する。さらに大きな衝撃に対してはダイヤモンド集合体の外側にある、核となる硬い超硬合金よりも軟らかい地の超硬合金により吸収するため、より耐衝撃性に富んだ構造を実現することができる。 Also in the present invention, the cemented carbide structure of the ground is abraded by abrasion with rocks, the diamond aggregate is partially exposed from the surface to naturally form irregularities on the surface of the diamond cemented carbide composite material and improve the grindability. I am making it. Since the outermost surface of the diamond aggregate is small diamond particles, it maintains wear resistance equal to or higher than conventional ones. Furthermore, since the impact applied to the diamond aggregate can be alleviated by the hard cemented carbide forming the nucleus of the diamond aggregate that is tougher than diamond, the impact resistance is also improved. Further, since a larger impact is absorbed by the soft cemented carbide on the outer side of the diamond aggregate, which is softer than the hard cemented carbide serving as the core, it is possible to realize a structure having higher impact resistance.
本発明のダイヤモンド超硬複合材料の構成要素となる超硬合金組織３４（試料Ｍ）とダイヤモンド集合体２０（試料Ｄ：３種類）を以下のように作製した。
（超硬合金組織）
粒径２〜３μｍのＷＣ粉末を８５重量％、粒径２〜３μｍのＣｏを１２重量％、４０μｍ以下のＮｉＰ（Ｐ含有量：１０％）を３重量％秤量して、アルコール中で４８時間ボールミル混合を行った。A cemented carbide structure 34 (Sample M) and a diamond aggregate 20 (Sample D: 3 types), which are constituent elements of the diamond cemented carbide composite material of the present invention, were prepared as follows.
(Cemented Carbide Structure)
85% by weight of WC powder having a particle size of 2 to 3 μm, 12% by weight of Co having a particle size of 2 to 3 μm, and 3% by weight of NiP (P content: 10%) having a particle size of 40 μm or less were weighed, and 48 hours in alcohol. Ball mill mixing was performed.
（ダイヤモンド集合体）
図２Ａに断面構造を模式的に示したように、本発明のダイヤモンド集合体２０は、超硬合金の球状の粒子２１の周囲に微小なダイヤモンド粒子２２を付着させ結合材２３で固着させたものである。具体的な作製法は、超硬合金の粒子（材種：Ｇ１；粒径：０．８〜１．１ｍｍ）の表面に粘着剤としてパラフィンを塗り、ダイヤモンドの平均粒径が異なる以下に示す３種類の混合物Ｄ１〜Ｄ３のそれぞれを表面に付着させ、真空中で１０００℃、１０分の熱処理を行ってダイヤモンド粒子を超硬合金の粒子の表面上に固着させた。上記粘着剤にはワセリンまたは有機溶剤を用いてもよい。(Diamond aggregate)
As shown schematically in the cross-sectional structure in FIG. 2A, in the diamond aggregate 20 of the present invention, fine diamond particles 22 are attached around spherical particles 21 of cemented carbide and fixed with a binder 23. Is. A specific production method is as follows. Paraffin is applied as an adhesive to the surface of cemented carbide particles (material type: G1; particle size: 0.8 to 1.1 mm), and the average particle size of diamond is different. Each of the types of mixtures D1 to D3 was adhered to the surface and heat-treated at 1000° C. for 10 minutes in vacuum to fix the diamond particles to the surface of the cemented carbide particles. Vaseline or an organic solvent may be used for the adhesive.
（Ｄ１）超硬合金に対して５重量％の７５％ダイヤモンド粒子（３２５／４００メッシュ、平均粒径４４μｍ）−２５％ＮｉＰ（Ｐ含有量：１０％）
（Ｄ２）超硬合金に対して５重量％の７５％ダイヤモンド粒子（１４０／１７０メッシュ、平均粒径１０５μｍ）−２５％ＮｉＰ（Ｐ含有量：１０％）
（Ｄ３）超硬合金に対して５重量％の７５％ダイヤモンド粒子（５０／６０メッシュ、平均粒径３００μｍ）−２５％ＮｉＰ（Ｐ含有量：１０％）(D1) 5% by weight of cemented carbide 75% diamond particles (325/400 mesh, average particle size 44 μm)-25% NiP (P content: 10%)
(D2) 5% by weight of cemented carbide 75% diamond particles (140/170 mesh, average particle size 105 μm)-25% NiP (P content: 10%)
(D3) 5% by weight of cemented carbide, 75% diamond particles (50/60 mesh, average particle size 300 μm)-25% NiP (P content: 10%)
図２Ｂは、作製したダイヤモンド集合体の一例の、拡大した外観写真を示す。
ダイヤモンド粒子の粒径が５００μｍ以上になると超硬合金粒に均等付着させることが難しく、かつ衝撃でダイヤモンド粒子の破壊、脱落が発生するため好ましくない。他方、粒径が５μｍ以下の場合は、以下に述べるダイヤモンド超硬複合材料の製作の際のホットプレス焼結中の熱の影響によってダイヤモンドの消耗が激しくなるため好ましくない。従って、最適粒径は１０〜３００μｍである。また理想的には、小さいダイヤモンド粒子で核となる超硬合金の表面積の１００％を覆うことが望ましい。FIG. 2B shows an enlarged photograph of the appearance of an example of the produced diamond aggregate.
If the particle size of the diamond particles is 500 μm or more, it is difficult to evenly attach the diamond particles to the cemented carbide particles, and the diamond particles are broken or dropped by impact, which is not preferable. On the other hand, if the particle size is 5 μm or less, the diamond wear becomes severe under the influence of heat during hot press sintering during the production of the diamond cemented carbide composite material described below, which is not preferable. Therefore, the optimum particle size is 10 to 300 μm. Ideally, it is desirable that the small diamond particles cover 100% of the surface area of the cemented carbide as the core.
次に、本発明のダイヤモンド超硬複合材料について以下に説明する。
図３Ａに模式的断面図を示すように、本発明のダイヤモンド超硬複合材料３０は、超硬合金の核３１の表面上にダイヤモンド粒子３２を結合剤３３で固着させたダイヤモンド集合体を、超硬複合材料の組織３４の中に複数個分散させた構造を有している。本実施例では、超硬複合材料の組織３４（試料Ｍ）は超硬合金の核３１（試料Ｄ１〜Ｄ３）とは異なる、より軟らかい組成により構成されている。Next, the diamond cemented carbide composite material of the present invention will be described below.
As shown in the schematic cross-sectional view in FIG. 3A, the diamond cemented carbide composite material 30 of the present invention comprises a diamond aggregate in which diamond particles 32 are fixed on the surface of a core 31 of a cemented carbide with a binder 33. It has a structure in which a plurality of hard composite materials 34 are dispersed. In the present embodiment, the structure 34 (sample M) of the cemented carbide composite material has a softer composition different from the nucleus 31 (samples D1 to D3) of the cemented carbide.
次に、上記試料Ｄ１〜Ｄ３を用いたダイヤモンド超硬複合材料の試料片（ＴＰ１〜ＴＰ３）の作製方法を以下に述べる。
（ＴＰ１）試料Ｍを１００ｇと試料Ｄ１を３０ｇ混合して、Φ２０ｍｍのカーボン型に１０ｇ投入して２００ｋｇ／ｃｍ２で仮プレスした後、高真空下で１０００℃に昇温後、荷重１ｔ／ｃｍ２でホットプレス（３０分間保持）した。
（ＴＰ２）試料Ｍを１００ｇと試料Ｄ２を３０ｇ混合して、Φ２０ｍｍのカーボン型に１０ｇ投入して２００ｋｇ／ｃｍ２で仮プレスした後、高真空下で１０００℃に昇温後、荷重１ｔ／ｃｍ２でホットプレス（３０分間保持）した。
（ＴＰ３）試料Ｍを１００ｇと試料Ｄ３を３０ｇ混合して、Φ２０ｍｍのカーボン型に１０ｇ投入して２００ｋｇ／ｃｍ２で仮プレスした後、高真空下で１０００℃に昇温後、荷重１ｔ／ｃｍ２でホットプレス（３０分間保持）した。Next, a method for producing sample pieces (TP1 to TP3) of the diamond cemented carbide composite material using the samples D1 to D3 will be described below.
(TP1) After mixing 100 g of the sample M and 30 g of the sample D1, 10 g was put into a carbon mold of Φ20 mm and temporarily pressed at 200 kg/cm 2 , and then the temperature was raised to 1000° C. under high vacuum, and the load was 1 t/cm. Hot press at 2 (hold for 30 minutes).
(TP2) After mixing 100 g of the sample M and 30 g of the sample D2, 10 g was put into a carbon mold of Φ20 mm and temporarily pressed at 200 kg/cm 2 , then the temperature was raised to 1000° C. under high vacuum, and the load was 1 t/cm. Hot press at 2 (hold for 30 minutes).
(TP3) 100 g of the sample M and 30 g of the sample D3 were mixed, 10 g was put into a carbon mold having a diameter of 20 mm and temporarily pressed at 200 kg/cm 2 , and then the temperature was raised to 1000° C. under high vacuum, and the load was 1 t/cm. Hot press at 2 (hold for 30 minutes).
このようにして、超硬合金組織（試料Ｍ）中に、ダイヤモンド集合体（試料Ｄ１〜Ｄ３）をそれぞれ分散させたダイヤモンド超硬複合材料の試料片を作製した。図３Ｂはダイヤモンド集合体の光学顕微鏡による拡大した断面写真である。また、ダイヤモンド超硬複合材料の断面写真を図３Ｃ〜３Ｅに示す。なお、これらの図の断面は、図３Ａ上部に示されたダイヤモンド超硬複合材料の表面に平行（紙面に垂直）な断面であり、同一の試料の別の箇所の写真である。図３Ｃ〜３Ｅから見積もった、ダイヤモンド粒子の核の表面に対する平均被覆率はそれぞれ、約６８％、約５０％、約６３％である。この実施例において、超硬合金組織のビッカース硬度は１１００ＨＶ、ダイヤモンド集合体の核となる超硬合金のビッカース硬度は１７００ＨＶ程度である。 In this way, sample pieces of the diamond cemented carbide composite material in which the diamond aggregates (Samples D1 to D3) were dispersed in the cemented carbide structure (Sample M) were produced. FIG. 3B is an enlarged cross-sectional photograph of a diamond aggregate by an optical microscope. 3C to 3E show cross-sectional photographs of the diamond cemented carbide composite material. The cross sections of these figures are cross sections parallel to the surface of the diamond cemented carbide composite material shown in the upper part of FIG. 3A (perpendicular to the paper surface), and are photographs of different portions of the same sample. The average coverages of the diamond particle nuclei surface estimated from FIGS. 3C-3E are about 68%, about 50%, and about 63%, respectively. In this example, the cemented carbide structure has a Vickers hardness of 1100 HV, and the cemented carbide serving as the core of the diamond aggregate has a Vickers hardness of about 1700 HV.
このようにして得られたダイヤモンド超硬複合材料の試験片を、図４に示すようなボーリングマシンの先端部のリングビットに図５のように取り付け、花崗岩上を荷重：３００ｋｇ／ｃｍ２、回転速度：３００ｒｐｍで回転摺動する試験を行った。また、比較として特許文献１のダイヤモンド複合材料、およびダイヤモンドを用いていない超硬合金（Ｇ１）も試験片として同様の試験を行った。その結果を図６に示す。The test piece of the diamond cemented carbide composite material thus obtained was attached to the ring bit at the tip of the boring machine as shown in FIG. 4 as shown in FIG. 5, and loaded on the granite at a load of 300 kg/cm 2 , rotation. Speed: A test of rotating and sliding at 300 rpm was conducted. For comparison, the diamond composite material of Patent Document 1 and a cemented carbide (G1) not containing diamond were also subjected to the same test as test pieces. The result is shown in FIG.
いずれのダイヤモンドの粒径（メッシュサイズ）においても、本発明によるダイヤモンド超硬複合材料は、特許文献１のダイヤモンド複合材料、およびダイヤモンドを用いていない超硬合金（Ｇ１）と比較してかなり大きな掘進率を示した。本実施例では、１４０／１７０メッシュサイズで最大の掘進率：２５ｍｍ／ｍｉｎが得られた。 Regardless of the particle size (mesh size) of the diamond, the diamond cemented carbide composite material according to the present invention is considerably larger than the diamond composite material of Patent Document 1 and the cemented carbide (G1) that does not use diamond. Showed the rate. In this example, the maximum excavation rate of 25 mm/min was obtained with the 140/170 mesh size.
なお、上記記載は実施例についてなされたが、本発明はそれに限定されず、本発明の精神と添付の請求の範囲の範囲内で種々の変更、及び修正をすることができることは当業者に明らかである。 Although the above description has been made with respect to the embodiments, the present invention is not limited thereto, and it is apparent to those skilled in the art that various changes and modifications can be made within the spirit of the present invention and the scope of the appended claims. Is.
例えば、上記実施例ではダイヤモンド粒子を用いたが、これに代えて同様に高硬度な材料である立方晶窒化ホウ素（ｃＢＮ）の粒子を用いても良い。また、ダイヤモンド粒子層の内部（核）、及び外部（組織）の超硬合金材料は任意の組成に変えることができる。 For example, although diamond particles are used in the above embodiment, particles of cubic boron nitride (cBN), which is also a material of high hardness, may be used instead of diamond particles. Further, the cemented carbide material inside (nucleus) and outside (structure) of the diamond particle layer can be changed to any composition.
本発明によるダイヤモンド超硬複合材料は耐摩耗性と研削性を併せ持つため、複合材料石油、天然ガス、地熱などのエネルギー開発に用いる掘削用ビット、その他の掘削用工具の耐摩耗部材として利用が可能である。 Since the diamond cemented carbide composite material according to the present invention has both wear resistance and grindability, it can be used as a wear resistant member for composite material petroleum, natural gas, drilling bits used for energy development such as geothermal, and other drilling tools. Is.
１ ビット
２ ゲージ部
３ ベアリング
４ シール部
７ 掘削荷重
８ 側壁からの面圧
２０ ダイヤモンド集合体
２１、３１ 超硬合金核
２２、３２ ダイヤモンド粒子
２３、３３ 結合剤
３０ ダイヤモンド超硬複合材料
３４ 超硬合金組織1 bit 2 gauge part 3 bearing 4 seal part 7 excavation load 8 surface pressure from side wall 20 diamond aggregate 21, 31 cemented carbide core 22, 32 diamond particles 23, 33 binder 30 diamond cemented carbide material 34 cemented carbide Organization
Claims (12)
複数のダイヤモンド粒子を、燐（Ｐ）を含有する鉄族金属である結合材と混合して、前記核の表面を被覆するように付着させる工程と、
さらに真空中で加熱して前記複数のダイヤモンド粒子を前記核の表面に固着させる工程と
を含むダイヤモンド集合体の製造方法であって、前記ダイヤモンド粒子の含有量は、前記ダイヤモンド集合体に対して５質量％以下である、ダイヤモンド集合体の製造方法。 A step of applying an adhesive material made of an organic compound on the surface of particles of a cemented carbide containing tungsten carbide (WC) as a core as a main component;
Mixing a plurality of diamond particles with a binder, which is an iron group metal containing phosphorus (P), and attaching the diamond particles so as to cover the surface of the nucleus.
A method of manufacturing a diamond aggregate, further comprising heating in a vacuum to fix the plurality of diamond particles to the surface of the nucleus, wherein the content of the diamond particles is 5 with respect to the diamond aggregate. A method for manufacturing a diamond aggregate, which is less than or equal to mass %.
該混合物を型に投入して予備プレスを行う工程と、
その後、前記混合物を高真空下で昇温した後ホットプレスする工程と
を含むダイヤモンド超硬複合材料の製造方法。 Mixing the diamond aggregate according to claim 1 or 2 with a cemented carbide containing an iron group metal containing tungsten carbide (WC) as a main component and containing phosphorus (P);
Charging the mixture into a mold and performing preliminary pressing,
And then hot pressing the mixture under high vacuum, followed by hot pressing.
複数の立方晶窒化ホウ素（ｃＢＮ）粒子を、燐（Ｐ）を含有する鉄族金属である結合材と混合して、前記核の表面を被覆するように付着させる工程と、Mixing a plurality of cubic boron nitride (cBN) particles with a binder, which is an iron group metal containing phosphorus (P), and adhering to cover the surface of the core.
さらに真空中で加熱して前記複数の立方晶窒化ホウ素粒子を前記核の表面に固着させる工程とFurther heating in vacuum to fix the plurality of cubic boron nitride particles to the surface of the nucleus;
を含む立方晶窒化ホウ素集合体の製造方法であって、前記立方晶窒化ホウ素粒子の含有量は、前記立方晶窒化ホウ素集合体に対して５質量％以下である、立方晶窒化ホウ素集合体の製造方法。A method for producing a cubic boron nitride aggregate, the content of the cubic boron nitride particles is 5% by mass or less with respect to the cubic boron nitride aggregate, Production method.
該混合物を型に投入して予備プレスを行う工程と、Charging the mixture into a mold and performing preliminary pressing,
その後、前記混合物を高真空下で昇温した後ホットプレスする工程とAnd then hot pressing the mixture under high vacuum and
を含む立方晶窒化ホウ素超硬複合材料の製造方法。A method for producing a cubic boron nitride cemented carbide composite material containing:
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2016/052085 WO2017130283A1 (en) | 2016-01-26 | 2016-01-26 | Diamond carbide composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPWO2017130283A1 JPWO2017130283A1 (en) | 2018-11-22 |
| JP6721615B2 true JP6721615B2 (en) | 2020-07-15 |
Family
ID=59397797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2017563423A Active JP6721615B2 (en) | 2016-01-26 | 2016-01-26 | Diamond carbide composite material |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6721615B2 (en) |
| WO (1) | WO2017130283A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3730231B1 (en) * | 2017-12-19 | 2024-04-17 | Proterial, Ltd. | Powder material, use of powder material for additive manufacturing, and method for producing powder material |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6191344A (en) * | 1984-10-11 | 1986-05-09 | Toshiba Tungaloy Co Ltd | High hardness sintered body |
| US7637981B2 (en) * | 2005-01-25 | 2009-12-29 | Tix Corporation | Composite wear-resistant member and method for manufacture thereof |
| JP4910016B2 (en) * | 2009-06-16 | 2012-04-04 | 株式会社ティクスホールディングス | Composite wear-resistant member and method of manufacturing the same |
-
2016
- 2016-01-26 JP JP2017563423A patent/JP6721615B2/en active Active
- 2016-01-26 WO PCT/JP2016/052085 patent/WO2017130283A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2017130283A1 (en) | 2018-11-22 |
| WO2017130283A1 (en) | 2017-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7128773B2 (en) | Compositions having enhanced wear resistance | |
| US9470043B2 (en) | Highly wear resistant diamond insert with improved transition structure | |
| US8590645B2 (en) | Impregnated drill bits and methods of manufacturing the same | |
| US6170583B1 (en) | Inserts and compacts having coated or encrusted cubic boron nitride particles | |
| AU2016201337B2 (en) | Infiltrated diamond wear resistant bodies and tools | |
| US9284788B2 (en) | Diamond impregnated bits and method of using and manufacturing the same | |
| US20200298375A1 (en) | Drilling tools having matrices with carbide-forming alloys, and methods of making and using same | |
| JPS62111093A (en) | Lock-bit with abrasion-resistant insert | |
| US20160186499A1 (en) | Diamond enhanced drilling insert with high impact resistance | |
| US20190054574A1 (en) | Wear resistant coating | |
| JP6721615B2 (en) | Diamond carbide composite material | |
| CN102307688A (en) | Abrasive inserts | |
| Gu | Development of a high-temperature high-pressure process for the manufacture of Diamond-Tungsten-Metal composites for oil and gas drilling | |
| JP2011149248A (en) | Rock bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20190123 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20191016 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20191213 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20200204 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20200403 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20200603 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20200618 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 6721615 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |