JPH08323506A - Cutting tool compositely covered with hard abrasion resistant layer - Google Patents
Cutting tool compositely covered with hard abrasion resistant layerInfo
- Publication number
- JPH08323506A JPH08323506A JP15844095A JP15844095A JPH08323506A JP H08323506 A JPH08323506 A JP H08323506A JP 15844095 A JP15844095 A JP 15844095A JP 15844095 A JP15844095 A JP 15844095A JP H08323506 A JPH08323506 A JP H08323506A
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- JP
- Japan
- Prior art keywords
- layer
- hard
- sintered body
- resistant layer
- boron nitride
- Prior art date
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- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は高圧相型窒化硼素、特に
立方晶型窒化硼素（以下、ＣＢＮ）を主成分とした焼結
体からなる硬質焼結体切削工具の改良に関するものであ
り、特に、強度および耐摩耗性に優れた硬質耐摩耗層か
らなる複合被膜を有する切削工具に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved hard sintered body cutting tool comprising a sintered body containing high-pressure phase boron nitride, particularly cubic boron nitride (hereinafter, CBN) as a main component. In particular, the present invention relates to a cutting tool having a composite coating formed of a hard wear resistant layer having excellent strength and wear resistance.
【０００２】[0002]
【従来の技術】高圧相型窒化硼素はダイヤモンドに次ぐ
高い硬度を有する材料で、この高圧相型窒化硼素の焼結
体は金属との反応性が低いことから金属、特に鉄系材料
の切削工具として使用されている。高圧相型窒化硼素焼
結体は高圧相型窒化硼素粒子を結合材（焼結助剤）を用
いて高温高圧下で焼結させて作られるが、下記の２つの
タイプに大別する事ができる。 (1) 高圧相型窒化硼素結晶粒子を20〜80体積％含み、焼
結材としてTiの炭化物、窒化物、炭窒化物を用いるもの
（例、特開昭53-77811号) (2) 高圧相型結晶粒子を70体積％含み、結合材としてAl
およびCo金属を用いるもの（例、特公昭52-43846号)2. Description of the Related Art High-pressure phase boron nitride is a material having the second highest hardness after diamond, and a sintered body of this high-pressure phase boron nitride has a low reactivity with a metal, so that a cutting tool for a metal, particularly an iron-based material, is used. Is used as. The high-pressure phase type boron nitride sintered body is made by sintering high-pressure phase type boron nitride particles at high temperature and high pressure using a binder (sintering aid), but it can be roughly classified into the following two types. it can. (1) Those containing 20 to 80% by volume of high-pressure phase type boron nitride crystal particles and using Ti carbide, nitride, or carbonitride as a sintering material (eg, JP-A-53-77811) (2) High pressure Contains 70% by volume of phase-type crystal grains and uses Al as a binder.
And those using Co metal (eg, Japanese Examined Patent Publication No. 52-43846)
【０００３】これらの高圧相型窒化硼素焼結体は硬度、
強度、熱伝導率等の物性において優れているので、各種
の鋼の切削工具として利用されている。例えば、タイプ
(1)の窒化硼素焼結体はビッカース硬度 2,800〜3,700
を有し、耐摩耗性に優れているので、焼入鋼の切削に利
用されている。タイプ(2) の高圧相型窒化硼素焼結体は
ビッカース硬度 3,500〜4,300 を有し、耐摩耗、耐欠損
性に優れているので、鋳鉄および高速度鋼の切削等に利
用されている。しかし、切削の高速化、高能率化をはじ
めとする切削条件の過酷化に伴って、上記の高圧相型窒
化硼素焼結体のみでは耐熱性、耐摩耗性、耐欠損性が十
分とはいえなくなっているのが現状である。These high-pressure phase boron nitride sintered bodies have hardness,
Since it is excellent in physical properties such as strength and thermal conductivity, it is used as a cutting tool for various steels. For example, type
The boron nitride sintered body of (1) has a Vickers hardness of 2,800 to 3,700.
It has excellent wear resistance and is used for cutting hardened steel. The high-pressure phase type boron nitride sintered body of type (2) has a Vickers hardness of 3,500 to 4,300 and is excellent in wear resistance and fracture resistance, so that it is used for cutting cast iron and high speed steel. However, due to the severer cutting conditions such as higher cutting speed and higher efficiency, it can be said that the above high-pressure phase boron nitride sintered body alone has sufficient heat resistance, wear resistance, and fracture resistance. The current situation is that they are gone.
【０００４】高圧相型窒化硼素焼結体の耐摩耗性を向上
させるために、高圧相型窒化硼素焼結体にTiＮ等の各種
耐摩耗層を被覆する方法が提案されている（例、特開昭
61−183187号公報、特開平１-96083号公報、特開平１-9
6084号公報、特公平２-44790号公報）が、これら公知の
被覆高圧相型窒化硼素焼結体工具は、耐摩耗層の硬度、
耐欠損性、耐クレーター摩耗性等が不十分なため、未だ
に実用的に十分な使用寿命の長い切削工具は得られてい
ない。特に、焼入鋼等の高硬度難削材の切削においては
耐摩耗層の硬度、耐欠損性および耐クレータ摩耗性の不
足が致命的で、被覆による耐摩耗性向上の効果が現れな
い。また、超硬合金にTiＮ、（Ti、Al）Ｎ、TiＣＮ、 A
l2Ｏ3 等を被覆した工具も提案されているが切削温度が
高くなると、基材内部が著しく弾塑性変形し、容易に剥
離または破壊してしまう。In order to improve the wear resistance of the high-pressure phase boron nitride sintered body, a method of coating various wear-resistant layers such as TiN on the high-pressure phase boron nitride sintered body has been proposed (eg, special Kaisho
61-183187, JP-A-1-96083, JP-A 1-9
No. 6084, Japanese Patent Publication No. 2-44790), these known coated high-pressure phase boron nitride sintered body tools, the hardness of the wear-resistant layer,
Due to insufficient fracture resistance and crater abrasion resistance, cutting tools with a practically long service life have not yet been obtained. In particular, when cutting a hard-to-cut material such as hardened steel, lack of hardness, fracture resistance and crater wear resistance of the wear resistant layer is fatal, and the effect of improving wear resistance by coating does not appear. In addition, for cemented carbide, TiN, (Ti, Al) N, TiCN, A
A tool coated with l 2 O 3 or the like has also been proposed, but when the cutting temperature becomes high, the inside of the base material is significantly elastically plastically deformed, and easily peels or breaks.
【０００５】[0005]
【発明が解決しようとする課題】本発明の目的は、高圧
相型窒化硼素焼結体の高い硬度（超硬合金の数倍）およ
び高強度と、硬質耐摩耗層の優れた耐摩耗性とを併せ持
った理想的な切削工具、例えば焼入鋼の切削や鋳鉄の粗
切削で用いた時に従来工具に比べて寿命が大幅に長くな
り、欠損に対するバラつきが少ない、安定して利用可能
な硬質耐摩耗層からなる複合被膜を有する切削工具を提
供することにある。The object of the present invention is to obtain high hardness (several times of cemented carbide) and high strength of a high-pressure phase type boron nitride sintered body and excellent wear resistance of a hard wear resistant layer. When used in an ideal cutting tool that also has, for example, hardened steel cutting or cast iron rough cutting, the tool life is significantly longer than that of conventional tools, there is little variation in chipping, and a stable and durable hard tool is used. It is to provide a cutting tool having a composite coating including a wear layer.
【０００６】[0006]
【課題を解決するための手段】本発明は、高圧相型窒化
硼素を20体積％以上含む硬質焼結体、特に耐欠損性に優
れたＣＢＮ焼結体からなる硬質焼結体の基材表面の切削
に関与する箇所に、 1) (Ti, Al)Ｎ層、 2) TiＮ層とAlＮ層とを繰り返して積層した構造を有
し、全体として立方晶型のＸ線回折パターンを有し、各
層の層厚が 0.2nm〜20nmである超格子積層化合物層（以
下、TiＮとAlＮの超格子積層化合物層) 3) TiＮ層とAlＮ層とを少なくとも２層有し、各層が粒
径１nm〜50nmの超微粒子からなる積層膜層（以下、TiＮ
とAlＮの超微粒子積層膜層） からなる群の中から選択される少なくとも１種の第１硬
質耐摩耗層と、その外側に形成された Al2O3層または A
l2O3とTiＣＮとを２層以上積層した多層膜からなる第２
硬質耐摩耗層とを有することを特徴とする硬質耐摩耗層
複合被覆切削工具を提供する。DISCLOSURE OF THE INVENTION The present invention is directed to a hard sintered body containing 20% by volume or more of high-pressure phase boron nitride, and in particular, a surface of a hard sintered body made of a CBN sintered body having excellent fracture resistance. 1) (Ti, Al) N layer, 2) has a structure in which a TiN layer and an AlN layer are repeatedly laminated, and has a cubic X-ray diffraction pattern as a whole, Superlattice laminated compound layer with a layer thickness of 0.2 nm to 20 nm (hereinafter, superlattice laminated compound layer of TiN and AlN) 3) At least two TiN layers and AlN layers are provided, and each layer has a grain size of 1 nm to Laminated film layer consisting of ultra-fine particles of 50 nm (hereinafter referred to as TiN
And at least one first hard wear-resistant layer selected from the group consisting of AlN ultrafine particle laminated film layers) and an Al 2 O 3 layer or A formed on the outer side thereof.
a second multilayer film composed of two or more layers of l 2 O 3 and TiCN
A hard wear resistant layer composite coated cutting tool having a hard wear resistant layer.
【０００７】〔図１〕〔図２〕は本発明の硬質耐摩耗層
からなる複合被覆を有する切削工具の各種実施例の概念
的断面図であり、図において (１) は硬質焼結体基材で
あり、２は第１硬質耐摩耗層であり、３は第２硬質耐摩
耗層であり、４および５は必要に応じて設けられる中間
層および表面層をそれぞれ示している。FIG. 1 and FIG. 2 are conceptual cross-sectional views of various examples of cutting tools having a composite coating made of a hard wear-resistant layer according to the present invention, in which (1) is a hard sintered body base. 2 is a first hard wear-resistant layer, 3 is a second hard wear-resistant layer, and 4 and 5 are intermediate layers and surface layers which are provided as necessary.
【０００８】第１および第２の硬質耐摩耗層２、３はイ
オンプレーティング法等のＰＶＤ法やプラズマＣＶＤ法
等のＣＶＤ法で作ることができる。これらの方法はＣＢ
Ｎ焼結体の耐摩耗性、耐欠損性、硬質焼結体基材と硬質
耐摩耗層との密着強度を高いレベルに維持した状態で、
硬質焼結体基材上に形成することができる。The first and second hard wear resistant layers 2 and 3 can be formed by a PVD method such as an ion plating method or a CVD method such as a plasma CVD method. These methods are CB
While maintaining the wear resistance and fracture resistance of the N sintered body and the adhesion strength between the hard sintered body base material and the hard wear resistant layer at a high level,
It can be formed on a hard sintered body substrate.
【０００９】硬質焼結体基材 (１) と硬質耐摩耗層
(２) 、 (３) との間には、膜厚が0.05〜５μｍの少な
くとも１層の中間層４を設けるのが好ましい。この中間
層４は周期律表４ａ、５ａおよび６ａ族元素の窒化物、
炭化物、酸化物およびこれらの固溶体から成る群の中か
ら選択される材料で作るのが好ましく、特にTiＣ、Ti
Ｎ、TiＣＮ、TiＣＮＯが好ましい。また、表面層５は例
えばTiＮにすることができる。Hard sintered body substrate (1) and hard wear resistant layer
Between (2) and (3), it is preferable to provide at least one intermediate layer 4 having a film thickness of 0.05 to 5 μm. The intermediate layer 4 is a nitride of a group 4a, 5a or 6a element of the periodic table,
It is preferably made of a material selected from the group consisting of carbides, oxides and solid solutions thereof, especially TiC, Ti
N, TiCN and TiCNO are preferred. Further, the surface layer 5 can be made of TiN, for example.
【００１０】本発明の硬質耐摩耗層複合被覆切削工具
は、具体的にはチップ、ドリル、エンドミル等を意味し
ているが、特にこれに限定されるものではない。本発明
の硬質耐摩耗層複合被覆切削工具は切削性能および工具
寿命が格段に向上することが確認されている。The hard wear resistant layer composite coated cutting tool of the present invention specifically means a tip, a drill, an end mill, etc., but is not particularly limited thereto. It has been confirmed that the hard wear resistant composite coating tool of the present invention has markedly improved cutting performance and tool life.
【００１１】本発明による工具は例えば下記の加工で好
ましく使用することができる。 浸炭材、ダイス鋼等の焼入鋼の高硬度難削材の切削 この場合には、硬質焼結体基材 (１) の逃げ面は機械的
摩耗が支配的であるので、逃げ面には摩耗の抑制に有効
な硬度および耐欠損性に優れた（Ti、Al）Ｎ層、TiＮと
AlＮとの超微粒子積層膜層またはTiＮとAlＮとの超格子
積層化合物層を形成し、一方、硬質焼結体基材のすくい
面は熱的な摩耗の割合が多くなるので、クレータ摩耗抑
制に効果的な熱的安定性に優れた Al2Ｏ3 層を形成する
のが適している。The tool according to the present invention can be preferably used, for example, in the following processing. Cutting of high hardness hard-to-cut materials such as carburized materials and die steels In this case, since the flank of the hard sintered body substrate (1) is dominated by mechanical wear, With (Ti, Al) N layer, TiN, which has excellent hardness and chipping resistance, which is effective in suppressing wear.
An ultrafine particle laminated film layer with AlN or a superlattice laminated compound layer with TiN and AlN is formed. On the other hand, the rake face of the hard sintered body has a large thermal wear rate, so that it suppresses crater wear. It is suitable to form an Al 2 O 3 layer having excellent effective thermal stability.
【００１２】 鋳鉄、軟鋼の切削 逃げ面に第２硬質耐摩耗層として Al2Ｏ3 を単層で被覆
することは耐欠損性の観点からは好ましくないが、この
場合にはの場合に比べて、切削時における硬質耐摩耗
層への静的および動的な応力負荷が軽微であるので、逃
げ面に Al2Ｏ3を欠損無しに使用できる。従って、生産
上の効率を追求する場合には逃げ面を Al2Ｏ3 で被覆し
てもよい。一方、硬質焼結体基材のすくい面はと同様
に被覆するのが好ましい。It is not preferable from the viewpoint of fracture resistance to coat the cutting flanks of cast iron or mild steel with a single layer of Al 2 O 3 as the second hard wear-resistant layer, but in this case it is more difficult than that. Since the static and dynamic stress loads on the hard wear-resistant layer during cutting are slight, Al 2 O 3 can be used on the flank face without defects. Therefore, when pursuing production efficiency, the flank may be covered with Al 2 O 3 . On the other hand, it is preferable to coat the rake face of the hard sintered body substrate in the same manner as.
【００１３】 断続切削 硬質焼結体基材の逃げ面は（Ti、Al）Ｎ、TiＮとAlＮと
の超微粒子積層膜層、TiＮとAlＮとの超格子積層化合物
層を被覆するのが好ましい。特に、TiＮとAlＮとの超微
粒子積層膜層はナノメートルオーダーの微粒をノナメー
トルオーダーの厚さに積層することによって亀裂の伝搬
を界面で抑制することができるので、耐欠損性に優れて
おり、最適である。一方、硬質焼結体基材のすくい面
は、のように Al2Ｏ3 層を単層で被覆すると欠損を起
し易いので、 Al2Ｏ3 とTiＣＮとを交互に２層以上積層
した多層膜で被覆して硬質耐摩耗層の粗大粒状組織化を
抑制し、耐クレータ摩耗性と耐欠損性とを兼ね合わせさ
せることができる。The flank of the intermittently cut hard sintered body is preferably coated with (Ti, Al) N, an ultrafine particle laminated film layer of TiN and AlN, or a superlattice laminated compound layer of TiN and AlN. In particular, the ultrafine particle laminated film layer of TiN and AlN has excellent chipping resistance because crack propagation can be suppressed at the interface by laminating nanometer-order fine particles to a thickness of the nonameter order. Is the best. On the other hand, the rake face of the hard sintered body substrate is liable to cause defects when the Al 2 O 3 layer is covered with a single layer like the one described above. Therefore, two or more layers of Al 2 O 3 and TiCN are laminated alternately. By coating with a film, it is possible to suppress the coarse grain structure of the hard wear-resistant layer and to combine the crater wear resistance and the fracture resistance.
【００１４】すなわち、被削材の種類に応じて硬質焼結
体基材に被覆する硬質耐摩耗層の種類、組み合わせを変
えることによって、最適な硬質耐摩耗層複合被覆切削工
具にすることができる。本発明は種々の硬質耐摩耗層お
よび高圧相型窒化硼素焼結体の諸特性について幅広い研
究を行った結果明らかになったものであり、高圧相型窒
化硼素焼結体を硬質耐摩耗層の基材として用いることに
よって発揮されるものであり、従来の被覆超硬合金の工
具の概念とは根本的に異なる考え方によるものである。That is, by changing the type and combination of hard wear resistant layers to be coated on the hard sintered body base material according to the type of work material, the optimum hard wear resistant layer composite coated cutting tool can be obtained. . The present invention has been made clear as a result of extensive research on various hard wear-resistant layers and various properties of high-pressure phase boron nitride sintered bodies. It is demonstrated by using it as a base material, and is based on an idea that is fundamentally different from the concept of the conventional coated cemented carbide tool.
【００１５】[0015]
【作用】一般に、薄膜の硬度は基材の影響を受け易く、
薄膜の厚さが薄くなるにつれその影響は顕著になる。本
発明では現存する物質の中でダイヤモンド焼結体に次い
で硬度の高い高圧相型窒化硼素焼結体（Ｈｖ＝ 2,800〜
5,000)からなる硬質焼結体基材を用いることによって、
従来のＷＣ系超硬合金（Ｈｖ＝1,800)を基材とした被覆
超硬合金工具の場合に大きな問題となっていた基材の弾
塑性変形に被覆層が追従できないことに起因する被覆層
の剥離を抑制することができ、しかも、切削時の高温条
件下でも高圧相型窒化硼素焼結体基材が硬質耐摩耗層の
高硬度を維持させる効果を発揮するので、高圧相型窒化
硼素焼結体工具の耐摩耗性を著しく向上させることがで
きる。[Function] Generally, the hardness of the thin film is easily influenced by the base material,
The effect becomes more remarkable as the thickness of the thin film becomes thinner. In the present invention, among the existing substances, a high-pressure phase boron nitride sintered body (Hv = 2,800-
By using a hard sintered body substrate consisting of 5,000),
When the coating layer cannot follow the elasto-plastic deformation of the base material, which has been a big problem in the case of the coated cemented carbide tool using the conventional WC-based cemented carbide (Hv = 1,800) as the base material, It is possible to suppress peeling, and since the high-pressure phase boron nitride sintered body substrate exerts the effect of maintaining the high hardness of the hard wear-resistant layer even under high-temperature conditions during cutting, high-pressure phase boron nitride firing The wear resistance of the bound tool can be significantly improved.
【００１６】本発明ではイオンプレーティング法やプラ
ズマＣＶＤ法を用いて基材との密着性に優れた硬質耐摩
耗層を成膜するので、切削時の硬質耐摩耗層の弾塑性変
形が基材との界面で拘束され、従って硬質耐摩耗層の硬
度が大幅に上昇する。すなわち高圧相型窒化硼素焼結体
を基材として用いることによって硬質耐摩耗層の有する
高硬度特性が更に向上し、優れた耐摩耗性を示す。In the present invention, the hard wear-resistant layer having excellent adhesion to the base material is formed by using the ion plating method or the plasma CVD method. The hardness of the hard wear-resistant layer is significantly increased due to the restraint at the interface with. That is, by using the high-pressure phase type boron nitride sintered body as the base material, the high hardness property of the hard wear resistant layer is further improved and excellent wear resistance is exhibited.
【００１７】高圧相型窒化硼素焼結体を基材とする工具
の少なくとも切削に関与する箇所の表面に硬質耐摩耗層
を被覆することによって、高圧相型窒化硼素焼結体の有
する高い強度および耐欠損性と、硬質耐摩耗層の有する
優れた耐摩耗性とが互いに顕在化して、耐摩耗性および
耐欠損性が著しく向上し、その結果、切削性能及び工具
寿命が大幅に延びる。事実、本発明の硬質耐摩耗層複合
被覆切削工具は公知のものより使用寿命が長く、欠損に
対するばらつきが少なく、安定して使用することができ
る。By coating a hard wear-resistant layer on at least the surface of a tool having a high-pressure phase type boron nitride sintered body as a base material, at least at a portion involved in cutting, high strength and high strength of the high-pressure phase type boron nitride sintered body can be obtained. The fracture resistance and the excellent wear resistance of the hard wear resistant layer are exposed to each other, and the wear resistance and the fracture resistance are remarkably improved, and as a result, the cutting performance and the tool life are significantly extended. In fact, the hard wear resistant layer composite coated cutting tool of the present invention has a longer service life than known ones, less variation due to chipping, and can be used stably.
【００１８】本発明に用いられる（Ti、Al）Ｎは特開平
２−194159号公報に記載の方法で作ることができる。Ti
Ｎ層とAlＮ層とを繰り返して積層する構造を有し、全体
として立方晶型のＸ線回折パターンを有し、各層の層厚
が 0.2nm〜20nmである超格子積層化合物層は特開平７−
3432号公報に記載の方法で作ることができる。TiＮ層と
AlＮ層とを少なくとも２層以上有し、各層が粒径１nm〜
50nmの超微粒子積層膜は特願平６−248503号に記載の方
法で作ることができる。Al2Ｏ3 、TiＣ、TiＮ、TiＣＮ
およびTiＣＮＯの層は通常の方法で作ることができる。The (Ti, Al) N used in the present invention can be produced by the method described in JP-A-2-194159. Ti
A superlattice laminated compound layer having a structure in which an N layer and an AlN layer are repeatedly laminated, having a cubic X-ray diffraction pattern as a whole, and each layer having a layer thickness of 0.2 nm to 20 nm −
It can be produced by the method described in Japanese Patent No. 3432. TiN layer
It has at least two AlN layers and each layer has a grain size of 1 nm to
An ultrafine particle laminated film of 50 nm can be produced by the method described in Japanese Patent Application No. 6-248503. Al 2 O 3 , TiC, TiN, TiCN
The layers of TiCNO and TiCNO can be produced in the usual way.
【００１９】上記硬質耐摩耗層は硬度、耐酸化性、耐欠
損性、被削材に対する耐反応性等において優れた特性を
有しているが、本発明者達は、高圧相型窒化硼素焼結体
に硬質耐摩耗層を複合的に被覆することによって硬質耐
摩耗層を単層で被覆したものよりも著しく切削性能、耐
摩耗性、耐欠損性が向上することを見いだしたものであ
る。The hard wear-resistant layer has excellent properties such as hardness, oxidation resistance, chipping resistance, and resistance to work material. It has been found that the composite coating of the hard wear-resistant layer on the bonded body significantly improves the cutting performance, wear resistance, and fracture resistance as compared with the case where the hard wear-resistant layer is coated by a single layer.
【００２０】硬質耐摩耗層全体の層厚が 0.5μｍ未満の
場合には耐摩耗性の向上がほとんど見られない。逃げ面
に被覆する硬質耐摩耗層の全層厚が10μｍを超えると、
高圧相型窒化硼素からなる硬質焼結体基材を用いること
による特性が失われ、硬質耐摩耗層自体の力学的特性が
支配的になり、欠損し易くなる。また、硬質耐摩耗層中
の残留応力の影響も顕著になり、硬質耐摩耗層に割れが
生じたり、基材との密着性が低下し、剥離を起こし易く
なる。すくい面に被覆した硬質耐摩耗層の場合、逃げ面
の場合とは異なり機械的な摩耗より熱的な摩耗が支配的
になるため、硬質耐摩耗層の全層厚は15μｍ以内が適当
である。When the total thickness of the hard wear resistant layer is less than 0.5 μm, the wear resistance is hardly improved. If the total thickness of the hard wear-resistant layer covering the flank exceeds 10 μm,
The characteristics due to the use of the hard sintered body substrate made of high-pressure phase boron nitride are lost, the mechanical characteristics of the hard wear-resistant layer itself become dominant, and the hard wear-resistant layer tends to be damaged. Further, the effect of residual stress in the hard wear-resistant layer becomes remarkable, cracks occur in the hard wear-resistant layer, the adhesion to the base material deteriorates, and peeling easily occurs. In the case of a hard wear-resistant layer coated on the rake face, thermal wear is dominant rather than mechanical wear unlike the case of the flank, so the total thickness of the hard wear-resistant layer should be within 15 μm. .
【００２１】中間層は硬質耐摩耗層と基材との間の密着
性を向上させる役目をするが、その他にも特性が大きく
異なる基材と硬質耐摩耗層との間に中間的な特性の中間
層を設けることによって、特性の変化を段階的に制御し
て、膜の残留応力を低減する効果が期待できる。残留応
力の緩和という意味では金属を中間層として用いること
もできるが、硬質焼結体基材および硬質耐摩耗層に比べ
著しく硬度が低く、延性、展性にも富むため弾塑性変形
を助長し、耐摩耗性の低下を引き起こす。中間層の膜厚
が0.05μｍ未満では密着性の向上が見られず、逆に５μ
ｍを越えても密着性の向上は見られない。従って、特性
および生産性の観点から中間層の層厚は0.05μｍ〜５μ
ｍの範囲にするのが好ましい。The intermediate layer serves to improve the adhesion between the hard wear-resistant layer and the base material, but in addition to this, there is an intermediate property between the hard wear-resistant layer and the base material having greatly different characteristics. By providing the intermediate layer, it is expected that the effect of reducing the residual stress of the film can be expected by controlling the change of the characteristics stepwise. Metal can be used as the intermediate layer in terms of relaxation of residual stress, but it has significantly lower hardness than the hard sintered body substrate and hard wear-resistant layer, and since it is rich in ductility and malleability, it promotes elasto-plastic deformation. , Causes deterioration of wear resistance. If the thickness of the intermediate layer is less than 0.05 μm, the adhesion is not improved, and conversely 5 μm.
Even if it exceeds m, no improvement in adhesion is observed. Therefore, from the viewpoint of characteristics and productivity, the thickness of the intermediate layer is 0.05 μm to 5 μm.
It is preferably in the range of m.
【００２２】硬質耐摩耗層の最上層に形成する表面層の
厚さは0.05μｍ以上かつ５μｍ以下にするのが好まし
い。この表面層は使用済みコーナーの判別のために被覆
するものであって、硬質耐摩耗層複合被覆切削工具の耐
摩耗性向上を目的としたものではない。この表面層の厚
さが0.05μｍ未満では使用済みコーナーを判別するのが
難しく、５μｍを超えるのは生産性の観点から適当では
ない。The thickness of the surface layer formed on the uppermost hard abrasion resistant layer is preferably 0.05 μm or more and 5 μm or less. This surface layer is provided for the purpose of determining the used corner, and is not intended to improve the wear resistance of the hard wear resistant layer composite coated cutting tool. If the thickness of this surface layer is less than 0.05 μm, it is difficult to determine the used corner, and if it exceeds 5 μm, it is not appropriate from the viewpoint of productivity.
【００２３】基材は前記の２つのタイプの高圧型窒化硼
素焼結体の中から選択できる。好ましい高圧相型窒化硼
素焼結体は下記 (1)および(2) である。 (1) ＣＢＮ粉末30〜90体積％と残部の結合材粉末とを超
高圧（４ＧPa以上）で焼結して得られるＣＢＮ焼結体。
残部の結合材粉末は周期律表４ａ、５ａ、６ａ族元素の
窒化物、炭化物、硼化物、酸化物およびこれらの固溶体
から成る群の中から選択される少なくとも１種とアルミ
ニウムとからなる結合材 (および不可避的不純物) であ
る。このタイプ(1) のＣＢＮ焼結体の内では、結合材粉
末として50〜95重量％のTiＣ、TiＮ、TiＣＮ、（TiＭ）
Ｃ、（TiＭ）Ｎおよび（TiＭ）ＣＮから成る群の中から
選択される少なくとも１種（ここで、ＭはTiを除く周期
律表４ａ、５ａおよび６ａ族元素の中から選択される遷
移金属）と、 5〜50重量％のアルミニウムおよび／また
はアルミニウム化合物（および不可避的不純物）とから
なるＣＢＮ焼結体は、耐摩耗性および強度が改善して好
ましい。The substrate can be selected from the above two types of high pressure type boron nitride sintered bodies. Preferred high-pressure phase type boron nitride sintered bodies are the following (1) and (2). (1) A CBN sintered body obtained by sintering 30 to 90% by volume of CBN powder and the rest of the binder powder at ultrahigh pressure (4 GPa or more).
The remaining binder powder is a binder composed of aluminum and at least one selected from the group consisting of nitrides, carbides, borides, oxides and solid solutions of the elements of Groups 4a, 5a and 6a of the Periodic Table. (And inevitable impurities). Among the CBN sintered bodies of this type (1), 50 to 95% by weight of TiC, TiN, TiCN, (TiM) is used as the binder powder.
At least one selected from the group consisting of C, (TiM) N and (TiM) CN (where M is a transition metal selected from the elements of groups 4a, 5a and 6a of the periodic table excluding Ti) ) And 5 to 50% by weight of aluminum and / or an aluminum compound (and inevitable impurities), a CBN sintered body is preferred because of improved wear resistance and strength.
【００２４】(2) ＣＢＮ粉末40〜95体積％と残部の結合
材粉末とを超高圧焼結（４ＧPa）して得られた焼結体。
残部の結合材粉末はTiＮ、Co、Ni、ＷＣ、TiＣおよびこ
れらの固溶体から成る群の中から選択される少なくとも
１種とアルミニウムおよび／またはアルミニウム化合物
とからなる結合材（および不可避的不純物）が好まし
い。 ホットプレス法、ＨＩＰ法、プラズマ焼結法およびピス
トン・シリンダー装置等を用いて0.05〜４ＧPaの圧力で
高圧焼結（例、米国特許第 4,110,184号) した高圧相型
窒化硼素焼結体 (1)および(2) を基材としたものに、本
発明の硬質耐摩耗層を複合被覆した硬質耐摩耗層複合被
覆切削工具も優れた性能を発揮する。(2) A sintered body obtained by ultra-high pressure sintering (4 GPa) of 40 to 95% by volume of CBN powder and the rest of the binder powder.
The remaining binder powder contains a binder (and inevitable impurities) composed of aluminum and / or an aluminum compound and at least one selected from the group consisting of TiN, Co, Ni, WC, TiC and solid solutions thereof. preferable. High-pressure phase type boron nitride sintered body obtained by high-pressure sintering (eg, US Pat. No. 4,110,184) at a pressure of 0.05 to 4 GPa using a hot pressing method, a HIP method, a plasma sintering method, a piston-cylinder device, etc. (1) The hard wear-resistant layer composite-coated cutting tool of the present invention, which is obtained by compound-coating the hard wear-resistant layer on the base material of (2) and (2), also exhibits excellent performance.
【００２５】タイプ（１）のＣＢＮ焼結体自体は公知で
あり、その特性および製造方法は特開昭53−7781号公報
に詳細に記載されている。タイプ（２）のＣＢＮ焼結体
は特公昭52−43846 号に記載の結合材にTiＮを加えたも
のにすることができる。TiＮを加えることによって硬質
耐摩耗層との密着性があがる。The type (1) CBN sintered body itself is known, and its characteristics and manufacturing method are described in detail in JP-A-53-7781. The type (2) CBN sintered body may be the binder described in Japanese Patent Publication No. 52-43846, to which TiN is added. By adding TiN, the adhesion with the hard wear resistant layer is improved.
【００２６】タイプ(1) のＣＢＮ焼結体は結合材が周期
律表４ａ、５ａ、６ａ族元素の窒化物、炭化物、硼化
物、酸化物およびこれらの固容体から成る群の中から選
択される少なくとも１種と、５〜50重量％のアルミニウ
ムおよび／またはアルミニウム化合物とからなるので、
これらが高温高圧下の焼結時にＣＢＮと反応して、硼化
アルミニウム（AlＢ2)、窒化アルミニウム（AlＮ）等の
化合物がＣＢＮ粒子と結合材との界面に生じ、それによ
って各粒子間の結合力が強くなり、焼結体の硬度、靭性
および強度が向上する。特に、結合材としてTiＮおよび
／またはTiＣを用いた場合には、TiNzおよびTiCzのｚ値
を化学量論比からずらして、それぞれ 0.5≦ｚ≦0.85、
0.65≦ｚ≦0.85とすることによって遊離チタン量を増す
ことによってＣＢＮと結合材の反応が促進され、また、
AlＢ2, AlＮ, TiＢ2 等の反応生成物による良好な摩耗
特性と強度とを有するＣＢＮ焼結体が得られる。ここ
で、TiNzおよびTiCzのｚ値をそれぞれ 0.5≦ｚ≦0.85、
0.65≦ｚ≦0.85と規定したのはそれぞれのｚ値が 0.5お
よび0.65未満になると酸化反応による発熱によって粉末
の充填操作が困難になり、0.85を超えるとＣＢＮと結合
材との反応性は化学量論比のTiＮおよびTiＣを用いた場
合とほとんど変わらなくなるためである。In the CBN sintered body of type (1), the binder is selected from the group consisting of nitrides, carbides, borides, oxides of group 4a, 5a and 6a elements of the periodic table and solid solutions thereof. And at least one aluminum and / or aluminum compound in an amount of 5 to 50% by weight,
These react with CBN during sintering under high temperature and high pressure, and a compound such as aluminum boride (AlB 2 ), aluminum nitride (AlN) is generated at the interface between the CBN particles and the binder, thereby binding between the particles. The strength is increased, and the hardness, toughness and strength of the sintered body are improved. In particular, when TiN and / or TiC is used as the binder, the z values of TiNz and TiCz are deviated from the stoichiometric ratio to obtain 0.5 ≦ z ≦ 0.85, respectively.
By increasing the amount of free titanium by setting 0.65 ≦ z ≦ 0.85, the reaction between CBN and the binder is promoted, and
A CBN sintered body having good wear characteristics and strength due to reaction products such as AlB 2 , AlN and TiB 2 can be obtained. Here, the z values of TiNz and TiCz are 0.5 ≦ z ≦ 0.85,
0.65 ≤ z ≤ 0.85 is defined as the z values of 0.5 and less than 0.65 make the powder filling operation difficult due to the heat generated by the oxidation reaction. This is because there is almost no difference from the case of using the theoretical ratio of TiN and TiC.
【００２７】タイプ(1) のＣＢＮ焼結体の結合材として
TiNz (0.5≦ｚ≦0.85）および／または TiCz （0.65≦
ｚ≦0.85）を用いた場合には、結合材中のアルミニウム
および／またはアルミニウム化合物量が５重量％未満で
はアルミニウムおよび／またはアルミニウム化合物とＣ
ＢＮとの反応が不十分で、結合材によるＣＢＮの保持力
が弱くなる。逆に、40重量％を超えるとAlＢ2, AlＮ,
TiＢ2 等の反応生成物が多くなってＣＢＮの保持力は上
るが、AlＢ2, AlＮよりも硬度、機械的強度において優
れたＣＢＮの相対的含有量が低下するため耐摩耗性が著
しく低下する。As a binder for a type (1) CBN sintered body
TiNz (0.5 ≦ z ≦ 0.85) and / or TiCz (0.65 ≦
z ≦ 0.85), aluminum and / or aluminum compound and C are contained when the amount of aluminum and / or aluminum compound in the binder is less than 5% by weight.
Since the reaction with BN is insufficient, the holding power of CBN by the binder becomes weak. On the contrary, if it exceeds 40% by weight, AlB 2 , AlN,
Although the amount of reaction products such as TiB 2 increases, the retention of CBN increases, but the relative content of CBN, which is superior to AlB 2 and AlN in hardness and mechanical strength, decreases, and wear resistance significantly decreases. .
【００２８】従って、従来は、タイプ(1) のＣＢＮ焼結
体を切削工具として用いる場合には結合材粉末の組成と
して、60〜80重量％の TiNz(0.5 ≦ｚ≦0.85）および／
またはTiCz（0.65≦ｚ≦0.85）と、20〜40重量％のアル
ミニウムおよび／またはアルミニウム化合物 (および不
可避的不純物) とからなるものが最適であるとされてい
た。しかし、本発明の工具用複合高硬度材料では、耐摩
耗性に優れた硬質耐摩耗層を被覆することによって耐摩
耗性に劣るＣＢＮ焼結体に優れた耐摩耗性が付与できる
ので、本発明硬質耐摩耗層複合被覆切削工具の基材とし
てのＣＢＮ焼結体に要求される特性は耐摩耗性より高強
度であり、高強度が重要な要素になる。Therefore, conventionally, when a type (1) CBN sintered body is used as a cutting tool, the composition of the binder powder is 60 to 80% by weight of TiNz (0.5≤z≤0.85) and / or
Alternatively, TiCz (0.65 ≦ z ≦ 0.85) and 20 to 40% by weight of aluminum and / or an aluminum compound (and inevitable impurities) are considered to be optimal. However, in the composite high hardness material for tools of the present invention, by coating a hard wear resistant layer having excellent wear resistance, it is possible to impart excellent wear resistance to a CBN sintered body having poor wear resistance. The characteristics required for a CBN sintered body as a base material of a hard wear resistant layer composite coated cutting tool are higher strength than wear resistance, and high strength is an important factor.
【００２９】すなわち、本発明は、本発明による硬質耐
摩耗層を被覆することによって、十分な靭性を備えてい
るにも係わらず耐摩耗性に欠点があるために従来では高
硬度難削材の切削では用いられなかった多量のアルミニ
ウムおよび／またはアルミニウム化合物を含む結合材を
用いたＣＢＮ焼結体が耐欠損性と耐摩耗性とを兼ね備え
た理想的な硬質耐摩耗層複合被覆切削工具となり得ると
いうことを明らかにしたものである。That is, according to the present invention, by coating the hard wear-resistant layer according to the present invention, although it has sufficient toughness, it has a defect in wear resistance. A CBN sintered body using a binder containing a large amount of aluminum and / or an aluminum compound, which has not been used for cutting, can be an ideal hard wear resistant layer composite coated cutting tool having both fracture resistance and wear resistance. That is what made it clear.
【００３０】特に、タイプ(1) のＣＢＮ焼結体の中で
は、結合材が50〜80重量％のTiNz(0.5≦ｚ≦0.85）と、
20〜50重量％のアルミニウムおよび／またはアルミニウ
ム化合物 (および不可避的不純物) とからなり、抗折力
（ＪＩＳ規格で測定）が110Kgf／mm2 以上である硬質耐
摩耗層複合被覆切削工具において上記の効果は顕著にな
り、通常のＣＢＮ焼結体工具や従来の耐摩耗層被覆ＣＢ
Ｎ焼結体工具では切削不可能であった高硬度焼入鋼の強
断続切削においても実用レベルを十分に満たす工具寿命
が実現できる。In particular, in the type (1) CBN sintered body, the binder is 50 to 80% by weight of TiNz (0.5≤z≤0.85),
A hard wear resistant layer composite coated cutting tool consisting of 20 to 50% by weight of aluminum and / or aluminum compound (and unavoidable impurities) and having a transverse rupture strength (measured according to JIS standard) of 110 Kgf / mm 2 or more. The effect becomes remarkable, and ordinary CBN sintered body tools and conventional wear resistant layer coated CB
It is possible to realize a tool life sufficiently satisfying a practical level even in the strong interrupted cutting of high hardness hardened steel, which could not be cut by the N sintered body tool.
【００３１】なお、結合材としてTiNz (0.5 ≦ｚ≦0.8
5）および／または TiCz （0.65≦ｚ≦0.85）を用いる
場合には、アルミニウムおよび／またはアルミニウム化
合物が50重量％を超えるとＣＢＮ焼結体の硬度および強
度が不十分となり、本発明の硬質耐摩耗層複合被覆切削
工具の基材としては不適当である。TiNz (0.5 ≤ z ≤ 0.8) is used as the binder.
5) and / or TiCz (0.65 ≦ z ≦ 0.85), when the amount of aluminum and / or the aluminum compound exceeds 50% by weight, the hardness and strength of the CBN sintered body become insufficient, and the hard resistance of the present invention increases. It is not suitable as a base material for a wear layer composite coated cutting tool.
【００３２】タイプ(2) のＣＢＮ焼結体では、平均粒径
が３μｍ以下のＣＢＮ粉末を出発材料として用いること
によって抗折力が 105Kgf/mm2 以上のＣＢＮ焼結体が製
造できる。この高靭性ＣＢＮ焼結体基材に本発明の硬質
耐熱被膜を被覆することによって、通常のＣＢＮ焼結体
工具や従来の耐摩耗層被覆ＣＢＮ焼結体工具では切削不
可能であった高硬度焼入鋼の強断続切削においても実用
レベルを十分に満たす工具寿命を実現することができ
る。In the type (2) CBN sintered body, a CBN sintered body having a transverse rupture strength of 105 Kgf / mm 2 or more can be manufactured by using CBN powder having an average particle size of 3 μm or less as a starting material. By coating this high toughness CBN sintered body substrate with the hard heat-resistant coating of the present invention, a high hardness which cannot be cut by a normal CBN sintered body tool or a conventional wear resistant layer-coated CBN sintered body tool. It is possible to realize a tool life sufficiently satisfying a practical level even in the strong interrupted cutting of hardened steel.
【００３３】[0033]
【実施例】以下、本発明の実施例を説明するが、下記実
施例は本発明を例示するもので、本発明が下記実施例に
限定されるものではない。EXAMPLES Examples of the present invention will be described below. However, the following examples are illustrative of the present invention and the present invention is not limited to the following examples.
【００３４】実施例１ TiＮ0.7 とAlとが80：20の割合（重量比）である結合材
を超硬合金製ポットおよびボールを用いて混合して結合
材粉末を得た。次に、この結合材とＣＢＮ粉末とを体積
比で40：60となるように配合し、Mo製容器に充填し、圧
力 5.2ＧPa、温度 1,750Ｋで15分間焼結した。ＪＩＳ規
格に記載の方法で測定した得られた焼結体の抗折力は 1
05 Kgf／mm2 であった。 Example 1 A binder powder was obtained by mixing a binder having TiN 0.7 and Al in a ratio of 80:20 (weight ratio) using a cemented carbide pot and a ball. Next, the binder and CBN powder were mixed in a volume ratio of 40:60, filled in a Mo container, and sintered at a pressure of 5.2 GPa and a temperature of 1,750 K for 15 minutes. The transverse rupture strength of the obtained sintered body measured by the method described in JIS standard is 1
It was 05 Kgf / mm 2 .
【００３５】この焼結体をＳＮＧＮ 120408 型のチップ
(ＩＳＯ規格）に加工し、イオンプレーティング法で中
間層のTiＣＮを被覆し、次いで、（Ti、Al）Ｎ、TiＮと
AlＮとの超格子積層化合物、TiＮとAlＮとの超微粒子積
層膜をそれぞれ成膜し、プラズマＣＶＤ法により、 Al2
Ｏ3 または Al2Ｏ3 とTiＣＮＯを２層以上積層した多層
膜を被覆し、最後にプラズマＣＶＤ法によりTiＣＮＯか
らなる表面層を５μｍ被覆した。すくい面のみを被覆す
る場合はモリブデン製のマスク薄板で逃げ面をカバー
し、すくい面のみを露出した状態で成膜するか、研磨に
より調整した。SNGN 120408 type chips were made from this sintered body.
(ISO standard), covered with TiCN of the intermediate layer by the ion plating method, and then with (Ti, Al) N, TiN
A superlattice laminated compound of AlN and an ultrafine particle laminated film of TiN and AlN are respectively formed, and Al 2 is formed by a plasma CVD method.
A multilayer film in which two or more layers of O 3 or Al 2 O 3 and TiCNO were laminated was coated, and finally, a surface layer made of TiCNO was coated by 5 μm by the plasma CVD method. In the case of covering only the rake face, the flank face was covered with a mask thin plate made of molybdenum, and the film was formed with only the rake face exposed or adjusted by polishing.
【００３６】評価は、硬度ＨＲＣ63の焼入鋼（ＳＵＪ２
材）の丸棒の外周を切削速度 150ｍ／min 、切込み 0.2
m 、送り 0.1mm／回転で乾式切削し、切削開始後25分に
おける各チップの逃げ面摩耗量、クレーター摩耗量およ
び欠損に至るまでの時間を測定して行った。各硬質耐摩
耗層の層厚は硬質耐摩耗層複合被覆切削工具の破面をＳ
ＥＭで観察して測定した。逃げ面摩耗量は実体顕微鏡を
用いて測定した。クレーター摩耗量はレーザー顕微鏡お
よび面粗度計を用いて測定した。なお、比較のために硬
質耐摩耗層を被覆していないＣＢＮ焼結体切削工具と、
硬質耐摩耗層を単層で被覆した硬質耐摩耗層被覆切削工
具とについても測定した。結果は〔表１〕〜〔表３〕に
示す。The evaluation is made of a hardened steel with hardness HRC63 (SUJ2
Material) round bar, cutting speed 150m / min, depth of cut 0.2
Dry cutting was performed at m, feed of 0.1 mm / revolution, and flank wear amount of each chip, crater wear amount, and time to fracture were measured 25 minutes after the start of cutting. The layer thickness of each hard wear-resistant layer is the same as the fracture surface of the hard wear-resistant layer composite coated cutting tool.
It was observed by EM and measured. The flank wear amount was measured using a stereoscopic microscope. The amount of crater wear was measured using a laser microscope and a surface roughness meter. For comparison, a CBN sintered body cutting tool not coated with a hard wear resistant layer,
A hard wear resistant layer-coated cutting tool in which the hard wear resistant layer was coated with a single layer was also measured. The results are shown in [Table 1] to [Table 3].
【００３７】[0037]
【表１】 [Table 1]
【００３８】[0038]
【表２】 [Table 2]
【００３９】[0039]
【表３】 [Table 3]
【００４０】〔表１〕〜〔表３〕の結果から下記のこと
が分かる。 1) 焼入鋼（ＳＵＪ２材）の切削では、従来のＣＢＮ焼
結体工具および硬質耐摩耗層を単層で被覆した切削工具
に比べて、本発明による硬質耐摩耗層複合被覆切削工具
が優れた耐摩耗性を示す。 2) 逃げ面に（Ti、Al）Ｎ、TiＮとAlＮとの超格子積層
化合物層またはTiＮとAlＮとの超微粒子積層膜層を被覆
し、すくい面に Al2Ｏ3 層または Al2Ｏ3 とTiＣＮとを
２層以上積層した多層膜を被覆した本発明による硬質耐
摩耗層複合切削工具が優れている。 3) 試料番号７、８、11〜13、16、17、22〜27の硬質耐
摩耗層複合切削工具が優れている。The following can be understood from the results of [Table 1] to [Table 3]. 1) In cutting hardened steel (SUJ2 material), the hard wear resistant layer composite coated cutting tool according to the present invention is superior to the conventional CBN sintered body tool and the cutting tool coated with a single hard wear resistant layer. It shows wear resistance. 2) The flank is coated with (Ti, Al) N, a superlattice laminated compound layer of TiN and AlN or an ultrafine particle laminated film layer of TiN and AlN, and the rake face is covered with an Al 2 O 3 layer or Al 2 O 3 The hard wear resistant layer composite cutting tool according to the present invention, which is coated with a multilayer film in which two or more layers of TiCN and TiCN are laminated, is excellent. 3) The hard wear resistant layer composite cutting tools of sample numbers 7, 8, 11 to 13, 16, 17, 22 to 27 are excellent.
【００４１】4) 試料番号15〜18から、すくい面に被覆
した硬質耐摩耗層の全層厚が 0.5μｍ未満では耐摩耗性
の向上は見られず、15μｍを超えると剥離することが分
かり、逃げ面に被覆した硬質耐摩耗層の全層厚が 0.5μ
ｍ未満では耐摩耗性の向上は見られず、10μｍを超える
と剥離することが分かる。従って、硬質耐摩耗層の全層
厚はすくい面の場合は 0.5〜15μｍが適当であり、逃げ
面の場合には 0.5〜10μｍが適当である。 5) 試料番号９〜14から中間層の層厚が0.03μｍ未満で
は密着力向上の効果は見られず、逆に５μｍを超えても
密着性の向上は見られないことが分かる。4) From Sample Nos. 15 to 18, it was found that no improvement in wear resistance was observed when the total thickness of the hard wear-resistant layer coated on the rake face was less than 0.5 μm, and peeling occurred when it exceeded 15 μm. The total thickness of the hard wear-resistant layer coated on the flank is 0.5μ
It can be seen that when the thickness is less than m, no improvement in wear resistance is observed, and when the thickness exceeds 10 μm, peeling occurs. Therefore, the total thickness of the hard wear-resistant layer is suitably 0.5 to 15 μm for the rake face and 0.5 to 10 μm for the flank face. 5) From Sample Nos. 9 to 14, it can be seen that when the thickness of the intermediate layer is less than 0.03 μm, the effect of improving the adhesive strength is not observed, and conversely, when it exceeds 5 μm, the adhesiveness is not improved.
【００４２】実施例２ 実施例１と同様な各種硬質耐摩耗層複合被覆切削工具を
用いて、硬度ＨＢ170のＦＣ300 材の丸棒の外周を切削
速度 500ｍ／分、切り込み0.25mm、送り0.15mm／回転で
乾式切削し、各チップの切削距離が10Kmの時の逃げ面摩
耗量とクレータ摩耗量とを測定した。また、欠損に至っ
た時点での切削距離を測定した。比較のために硬質耐摩
耗層を被覆していないＣＢＮ焼結体工具についても同じ
測定を行った。結果は〔表４〕に示してある。 Example 2 Using various hard wear resistant layer composite coated cutting tools similar to those in Example 1, the outer circumference of the FC300 material round bar with hardness HB170 was cut at a cutting speed of 500 m / min, a cut of 0.25 mm and a feed of 0.15 mm /. Dry cutting was performed by rotation, and the flank wear amount and crater wear amount when the cutting distance of each chip was 10 km were measured. In addition, the cutting distance at the time of reaching the defect was measured. For comparison, the same measurement was carried out on a CBN sintered body tool not coated with a hard wear resistant layer. The results are shown in [Table 4].
【００４３】[0043]
【表４】 [Table 4]
【００４４】〔表４〕の結果から、鋳鉄（ＦＣ300 材）
の切削では、本発明による硬質耐摩耗層複合被覆切削工
具が従来のＣＢＮ焼結体工具および硬質耐摩耗層を単層
で有する切削工具よりも優れた耐摩耗性を示すことが分
かる。また、実施例１と同様に、逃げ面に（Ti、Al）
Ｎ、TiＮとAlＮとの超格子積層化合物層またはTiＮとAl
Ｎとの超微粒子積層膜層を被覆し、すくい面に Al2Ｏ3
層または Al2Ｏ3 とTiＣＮとを２層以上積層した多層膜
を被覆した本発明の硬質耐摩耗層複合切削工具が優れて
いることが分かる（試料番号１〜３）。また、実施例１
の焼入鋼の切削とは異なり、実施例２で用いた鋳鉄の切
削では逃げ面に第２硬質耐摩耗層として Al2Ｏ3 が単層
被覆されていても、欠損・剥離を生じることなく、十分
に利用できることが明らかになった（試料番号１）。From the results of [Table 4], cast iron (FC300 material)
It is understood that, in the cutting of No. 3, the hard wear resistant layer composite coated cutting tool according to the present invention exhibits better wear resistance than the conventional CBN sintered body tool and the cutting tool having the hard wear resistant layer as a single layer. In addition, as in Example 1, the flank (Ti, Al)
N, TiN and AlN superlattice laminated compound layer or TiN and Al
An ultrafine particle laminated film layer with N is coated, and Al 2 O 3 is applied to the rake face.
It can be seen that the hard wear-resistant layer composite cutting tool of the present invention coated with a layer or a multilayer film in which two or more layers of Al 2 O 3 and TiCN are laminated is excellent (Sample Nos. 1 to 3). In addition, Example 1
Unlike the cutting of the hardened steel of No. 2, in the cutting of the cast iron used in Example 2, even if the flank face was coated with a single layer of Al 2 O 3 as the second hard wear-resistant layer, there was no loss or peeling. , It was revealed that it could be sufficiently utilized (Sample No. 1).
【００４５】実施例３ Co、Al、ＷＣ、TiＮの比率を43：30：25：２の割合（重
量比）にした結合材を超硬合金製ポットおよびボールを
用いて混合して結合材粉末を得た。この結合材とＣＢＮ
粉末とを体積比で12：88となるように配合し、Mo製容器
に充填し、圧力5.2 ＧPa、温度 1750 Ｋで15分間焼結し
た。得られた焼結体の抗折力は100Kgf／mm2 であった
(ＪＩＳ規格に記載の方法で測定) 。この焼結体をＳＮ
ＧＮ120408（ＩＳＯ規格）型のチップに加工し、イオン
プレーティング法で（Ti、Al）Ｎ、TiＮとAlＮとの超格
子積層化合物またはTiＮとAlＮとの超微粒子積層物を成
膜した。その後、プラズマＣＶＤ法で Al2Ｏ3 またはAl
2 Ｏ3 とTiＣＮとを２層以上積層した多層膜を被覆し
た。なお、各試料にはイオンプレーティング法で 2.5μ
ｍのTiＮ層の中間層を成膜し、プラズマＣＶＤ法で 2.5
μｍのTiＣＮ層の表面層を成膜した。 Example 3 Binder powder in which the ratio of Co, Al, WC and TiN was set to the ratio of 43: 30: 25: 2 (weight ratio) was mixed using a cemented carbide pot and ball, and binder powder was prepared. Got This binder and CBN
The powder and the powder were mixed in a volume ratio of 12:88, filled in a Mo container, and sintered at a pressure of 5.2 GPa and a temperature of 1750 K for 15 minutes. The bending strength of the obtained sintered body was 100 Kgf / mm 2 .
(Measured by the method described in JIS standard). SN this sintered body
A GN120408 (ISO standard) type chip was processed and a (Ti, Al) N, a superlattice laminated compound of TiN and AlN or an ultrafine particle laminated body of TiN and AlN was formed into a film by an ion plating method. After that, by plasma CVD method, Al 2 O 3 or Al
A multilayer film in which two or more layers of 2 O 3 and TiCN were laminated was coated. 2.5 μm for each sample by the ion plating method.
m of TiN layer is deposited and plasma CVD method is used.
A surface layer of a TiCN layer having a thickness of μm was formed.
【００４６】各硬質耐摩耗被覆切削工具を用いて、外周
６箇所にＶ字形状の溝を有する浸炭焼き入れした硬度Ｈ
ＲＣ60のＳＣＭ−415 材の外周を切削速度 150ｍ／分、
切込み 0.2mm、送り 0.1mm／回転で乾式で切削し、衝撃
回数50,000回時における各硬質耐摩耗層被覆切削工具の
逃げ面摩耗量と、クレーター摩耗量とを測定した。ま
た、各硬質耐摩耗層被覆切削工具が欠損するまでの衝撃
回数を測定した。比較のために、硬質耐摩耗層の被覆の
無いＣＢＮ焼結体切削工具（硬質耐摩耗層複合被覆切削
工具に用いたＣＢＮ焼結体基材）についても同じ測定を
した。結果は〔表５〕〔表６〕に示してある。Using each hard wear-resistant coated cutting tool, the hardness H was carburized and quenched with V-shaped grooves at 6 locations on the outer circumference.
Cutting speed of 150m / min around the outer circumference of RC60 SCM-415 material,
Dry cutting was performed with a depth of cut of 0.2 mm and a feed of 0.1 mm / revolution, and the flank wear amount and crater wear amount of each hard wear resistant layer-coated cutting tool at the time of impact of 50,000 times were measured. Further, the number of impacts until each hard wear resistant layer-coated cutting tool was damaged was measured. For comparison, the same measurement was performed on a CBN sintered body cutting tool without coating of a hard wear resistant layer (CBN sintered body base material used for a hard wear resistant layer composite coated cutting tool). The results are shown in [Table 5] and [Table 6].
【００４７】[0047]
【表５】 [Table 5]
【００４８】[0048]
【表６】 [Table 6]
【００４９】〔表５〕〔表６〕の結果から、浸炭材（Ｓ
ＣＭ−415 材）の断続切削では、本発明による硬質耐摩
耗層複合被覆切削工具が従来のＣＢＮ焼結体工具および
硬質耐摩耗層を単層で被覆した切削工具よりも著しく優
れた耐摩耗性を示すことが分かる。また、逃げ面に（T
i、Al）Ｎ、TiＮとAlＮとの超格子積層化合物、TiＮとA
lＮとの超微粒子積層物を被覆し、すくい面に Al2Ｏ3
とTiＣＮとを交互に２層以上積層した多層膜を被覆して
粗大粒状組織化を抑制した硬質耐摩耗層複合切削工具
（試料番号13〜15）が優れており、特に、試料番号14の
硬質耐摩耗層複合切削工具が優れている。From the results of [Table 5] and [Table 6], the carburized material (S
In the intermittent cutting of CM-415 material, the hard wear resistant layer composite coated cutting tool according to the present invention has significantly better wear resistance than the conventional CBN sintered body tool and the cutting tool coated with a single hard wear resistant layer. You can see that Also, on the flank (T
i, Al) N, superlattice laminated compound of TiN and AlN, TiN and A
coated with an ultrafine particle laminate of 1N and Al 2 O 3 on the rake face
A hard wear-resistant layer composite cutting tool (Sample Nos. 13 to 15) which is coated with a multilayer film in which two or more layers of TiCN and TiCN are alternately laminated to suppress coarse-grained grain structure is excellent. Wear resistant composite cutting tools are excellent.
【００５０】実施例４ 実施例２と同じ基材にイオンプレーティング法でTiＮの
中間層を 2.5μｍの厚さに被覆した後、各硬質耐摩耗層
をイオンプレーティング法および／またはプラズマＣＶ
Ｄ法で被覆した硬質耐摩耗層複合被覆切削工具を製作し
た。得られた工具を用いて、硬度ＨＢ160 のＦＣＤ550
黒皮材（自動車部品）の外周を切削速度 250ｍ／分、切
込み２mm、送り0.25mm／回転で湿式切削し、硬質耐摩耗
層複合被覆切削工具が欠損するまでのパス回数（被削材
１本につき１パスのみ切削）を測定した。比較のために
硬質耐摩耗層を被覆していないＣＢＮ焼結体切削工具
（硬質耐摩耗層複合被覆切削工具に用たＣＢＮ焼結体基
材）についても同じ測定をした。結果は〔表７〕に示し
てある。 Example 4 The same substrate as in Example 2 was coated with an intermediate layer of TiN to a thickness of 2.5 μm by the ion plating method, and then each hard wear resistant layer was subjected to the ion plating method and / or plasma CV.
A hard wear resistant layer composite coated cutting tool coated by the D method was manufactured. Using the tool obtained, FCD550 with hardness HB160
Wet cutting the outer periphery of the black skin material (automotive parts) at a cutting speed of 250 m / min, a depth of cut of 2 mm, and a feed of 0.25 mm / revolution, and the number of passes until the hard wear-resistant layer composite coated cutting tool is damaged (one work material) Per one cutting) was measured. For comparison, the same measurement was performed on a CBN sintered body cutting tool not coated with a hard wear resistant layer (CBN sintered body base material for a hard wear resistant layer composite coated cutting tool). The results are shown in [Table 7].
【００５１】[0051]
【表７】 [Table 7]
【００５２】〔表７〕の結果から、ＦＣＤ550 黒皮材の
荒切削では、本発明の硬質耐摩耗層複合被覆切削工具が
従来のＣＢＮ工具や硬質耐摩耗層を単層で被覆した切削
工具よりも著しく優れた耐摩耗性を示すことが分かる。
特に、逃げ面にTiＮとAlＮとの超格子積層化合物を被覆
し、すくい面に Al2Ｏ3 とTiＣＮとを交互に２層以上積
層した多層膜を被覆した硬質耐摩耗層複合切削工具（試
料番号６）が優れている。From the results of [Table 7], in rough cutting of FCD550 black skin material, the hard wear resistant layer composite coated cutting tool of the present invention is more effective than the conventional CBN tool or the hard wear resistant layer coated single layer cutting tool. It can be seen that also shows extremely excellent wear resistance.
In particular, a hard wear resistant composite cutting tool with a flank face coated with a superlattice laminate compound of TiN and AlN and a rake face coated with a multilayer film in which two or more layers of Al 2 O 3 and TiCN are alternately laminated (sample The number 6) is excellent.
【００５３】実施例５ 実施例１の試料26と同様な複合硬質耐摩耗層を有する切
削工具を作製したが、基材のＣＢＮ焼結体を〔表８〕に
示すＣＢＮ含有率（体積％）および結合材の組成（重量
％）のものに代えた。外周に４箇所のＵ字形状の溝を有
する硬度ＨＲＣ60のＳＫＤ11を被削材として切削速度 1
50ｍ／分、切り込み0.15mm、送り 0.1mm／回転で乾式切
削し、５分間切削したときの欠損率（サンプル数５）を
測定した。結果は〔表８〕〔表９〕に示してある。 Example 5 A cutting tool having a composite hard wear-resistant layer similar to the sample 26 of Example 1 was prepared, but the CBN sintered body of the base material had the CBN content (volume%) shown in [Table 8]. And the binder composition (wt%). Cutting speed using SKD11 of hardness HRC60 having four U-shaped grooves on the outer periphery as the work material 1
Dry cutting was carried out at 50 m / min, incision 0.15 mm, and feed 0.1 mm / revolution, and the defect rate (number of samples: 5) after cutting for 5 minutes was measured. The results are shown in [Table 8] and [Table 9].
【００５４】[0054]
【表８】 [Table 8]
【００５５】[0055]
【表９】 [Table 9]
【００５６】実施例１〜４の硬質耐摩耗層複合被覆切削
工具と同様に、この実施例の場合も従来のＣＢＮ焼結体
工具や硬質耐摩耗層を単層で被覆した切削工具よりも著
しく優れた耐摩耗性を示すことが分かるが、〔表８〕
〔表９〕の結果は、さらに、硬質耐摩耗層複合切削工具
用の専用の基材として高強度、高靭性の基材を開発し、
それに本発明るよる硬質耐摩耗層を複合的に被覆するこ
とによって、耐欠損性と耐摩耗性とがさらに優れた長寿
命で安定して使用可能（欠損に対するバラツキが少な
い）な硬質耐摩耗層複合被覆切削工具が開発できるとい
うことを明らかにしている。Similar to the hard wear resistant layer composite coated cutting tools of Examples 1 to 4, this embodiment is also significantly more remarkable than the conventional CBN sintered body tool and the cutting tool coated with the hard wear resistant layer as a single layer. It can be seen that it shows excellent wear resistance, but [Table 8]
The results of [Table 9] further indicate that a high-strength, high-toughness base material was developed as a dedicated base material for a hard wear resistant layer composite cutting tool,
A hard wear-resistant layer which is further excellent in fracture resistance and wear resistance and can be stably used over a long life (with little variation with respect to fracture) by compositely coating the hard wear-resistant layer according to the present invention It reveals that a composite coated cutting tool can be developed.
【００５７】[0057]
【発明の効果】以上の通り、本発明の硬質耐摩耗層複合
被覆切削工具は、優れた強度、硬度および耐欠損性を有
する高圧型窒化硼素焼結体基材、特にＣＢＮ焼結体基材
に優れた耐摩耗性を有する硬質耐摩耗層を密着性良く被
覆することによって、耐欠損性と耐摩耗性とを兼ね備
え、従来切削工具に比較して著しく長い寿命を有し、幅
広い用途に適用可能な切削性能を有している。As described above, the hard wear resistant layer composite coated cutting tool of the present invention is a high pressure type boron nitride sintered body substrate having excellent strength, hardness and fracture resistance, particularly a CBN sintered body substrate. By coating a hard wear resistant layer with excellent wear resistance with good adhesion, it has both fracture resistance and wear resistance, has a significantly longer life than conventional cutting tools, and is applicable to a wide range of applications. It has possible cutting performance.
【図１】 本発明の硬質耐摩耗層からなる複合被覆を有
する切削工具の実施例の概念的断面図。FIG. 1 is a conceptual cross-sectional view of an example of a cutting tool having a composite coating of a hard wear resistant layer of the present invention.
【図２】 本発明の切削工具の別の実施例の概念的断面
図。FIG. 2 is a conceptual cross-sectional view of another embodiment of the cutting tool of the present invention.
１ 硬質焼結体基材 ２ 第１硬質
耐摩耗層 ３ 第２硬質耐摩耗層 ４ 中間層 ５ 表面層1 Hard Sintered Body Substrate 2 First Hard Wear-Resistant Layer 3 Second Hard Wear-Resistant Layer 4 Intermediate Layer 5 Surface Layer
Claims (10)
質焼結体基材(1) の表面の切削に関与する箇所に、 1) (Ti, Al)Ｎ層、 2) TiＮ層とAlＮ層とを繰り返して積層した構造を有
し、全体として立方晶型のＸ線回折パターンを有し、各
層の層厚が 0.2nm〜20nmである超格子積層化合物層、 3) TiＮ層とAlＮ層とを少なくとも２層有し、各層が粒
径１nm〜50nmの超微粒子からなり、各層の厚さが１nm〜
60nmである積層膜層 からなる群の中から選択される第１硬質耐摩耗被覆層
(2) を有し、 さらにその外側の少なくとも一部に Al2O3層または Al2
O3とTiＣＮとを２層以上積層した多層膜からなる第２硬
質耐摩耗被覆層(3) を有する、ことを特徴とする硬質耐
摩耗層複合被覆切削工具。1. A 1) (Ti, Al) N layer, and 2) a TiN layer are provided at a location related to cutting of the surface of a hard sintered body substrate (1) containing 20 vol% or more of high-pressure phase type boron nitride. Superlattice compound layer having a structure in which an AlN layer is repeatedly laminated and having a cubic X-ray diffraction pattern as a whole, and the layer thickness of each layer is 0.2 nm to 20 nm, 3) TiN layer and AlN And at least two layers, each layer consisting of ultrafine particles having a particle size of 1 nm to 50 nm, and each layer having a thickness of 1 nm to
First hard wear-resistant coating layer selected from the group consisting of laminated film layers having a thickness of 60 nm
(2) and has an Al 2 O 3 layer or an Al 2 O 3 layer on at least a part of the outside.
A hard wear-resistant layer composite-coated cutting tool having a second hard wear-resistant coating layer (3) comprising a multilayer film in which two or more layers of O 3 and TiCN are laminated.
質焼結体基材のすくい面に対応する箇所の切削に関与す
る箇所が第１硬質耐摩耗被覆層(2) および第２硬質耐摩
耗被覆層(3) を有し、逃げ面に対応する箇所が第１硬質
耐摩耗被覆層(2) のみを有する請求項１に記載の硬質耐
摩耗層複合被覆切削工具。2. The first hard wear-resistant coating layer (2) and the second hard portion are the portions involved in the cutting of the portion corresponding to the rake face of the hard sintered body substrate containing 20 vol% or more of high-pressure phase type boron nitride. The hard wear resistant layer composite coated cutting tool according to claim 1, wherein the hard wear resistant layer composite coated cutting tool has a wear resistant coating layer (3), and a portion corresponding to a flank has only the first hard wear resistant coating layer (2).
質焼結体基材(1) と硬質耐摩耗層(2：3)との界面の少な
くとも一部に、膜厚が0.05〜５μｍのTiＮ、TiＣ、TiＣ
ＮおよびTiＣＮＯからなる群の中から選択される少なく
とも１種からなる中間層(4) をさらに有する請求項１ま
たは２に記載の硬質耐摩耗層複合被覆切削工具。3. A film thickness of 0.05 to 5 μm on at least a part of an interface between a hard sintered body substrate (1) containing 20 vol% or more of high-pressure phase type boron nitride and a hard wear resistant layer (2: 3). TiN, TiC, TiC
The hard wear resistant layer composite coated cutting tool according to claim 1 or 2, further comprising an intermediate layer (4) made of at least one selected from the group consisting of N and TiCNO.
とも一部に 0.1μｍ〜５μｍのTiＣ、TiＮ、TiＣＮおよ
びTiＣＮＯからなる群の中から選択される少なくとも１
種の表面層(5) を有する請求項１〜３のいずれか一項に
記載の硬質耐摩耗層複合被覆切削工具。4. At least one selected from the group consisting of 0.1 μm to 5 μm of TiC, TiN, TiCN and TiCNO on at least part of the outer surface of the hard wear resistant layer (2: 3).
A hard wear resistant layer composite coated cutting tool according to any one of claims 1 to 3 having a seed surface layer (5).
質焼結体基材(1) が、立方晶型窒化硼素粉末および／ま
たはウルツ鉱型窒化硼素30〜90体積％と、残部の結合材
粉末とを高圧焼結して得られた焼結体基材であり、結合
材粉末は周期律表４ａ、５ａ、６ａ族元素の窒化物、炭
化物、硼化物、酸化物およびこれらの固溶体から成る群
の中から選択される少なくとも１種とアルミニウムおよ
び／またはアルミニウム化合物 (および不可避的不純
物) とで構成される請求項１〜４のいずれか一項に記載
の硬質耐摩耗層複合被覆工具。5. A hard sintered body substrate (1) containing high-pressure phase type boron nitride in an amount of 20% by volume or more, comprising a cubic type boron nitride powder and / or wurtzite type boron nitride in an amount of 30 to 90% by volume and the balance of It is a sintered body substrate obtained by high-pressure sintering with a binder powder, wherein the binder powder is a nitride, a carbide, a boride, an oxide of a group 4a, 5a, or 6a element of the periodic table, and a solid solution thereof. A hard wear resistant layer composite coated tool according to any one of claims 1 to 4, which is composed of at least one selected from the group consisting of and aluminum and / or an aluminum compound (and inevitable impurities). .
り、結合材粉末が50〜95重量％のTiＣおよび／またはTi
Ｎおよび／またはTiＣＮおよび／またはTiＣＮＯおよび
／または（TiＭ）Ｃおよび／または（TiＭ）Ｎおよび／
または（TiＭ）ＣＮおよび／または（TiＭ）ＣＮＯから
成る群の中から選択される少なくとも１種（ここで、Ｍ
はTiを除く周期律表４ａ、５ａおよび６ａ族元素の中か
ら選択される遷移金属）と 5〜50重量％のアルミニウム
および／またはアルミニウム化合物とからなる請求項５
に記載の硬質摩耗層複合被覆切削工具。6. The high-pressure phase type boron nitride is cubic boron nitride, and the binder powder is 50 to 95% by weight of TiC and / or Ti.
N and / or TiCN and / or TiCNO and / or (TiM) C and / or (TiM) N and /
Or at least one selected from the group consisting of (TiM) CN and / or (TiM) CNO (where M is
Is a transition metal selected from elements of groups 4a, 5a and 6a of the periodic table excluding Ti) and 5 to 50% by weight of aluminum and / or an aluminum compound.
A hard wear layer composite coated cutting tool according to.
5 ≦ｚ≦0.85）と、20〜50重量％のアルミニウムおよび
／またはアルミニウム化合物と、不可避的不純物とから
なり、抵折力（ＪＩＳ規格による測定）が 110Kgf/mm2
以上である請求項６に記載の硬質耐摩耗層複合被覆切削
工具。7. TiNz (0.
5 ≤ z ≤ 0.85), 20 to 50% by weight of aluminum and / or aluminum compound, and unavoidable impurities, and the bending strength (measured by JIS standard) is 110 Kgf / mm 2
The hard wear resistant layer composite coated cutting tool according to claim 6, which is the above.
65≦ｚ≦0.85）と、20〜50重量％のアルミニウムおよび
／またはアルミニウム化合物と、不可避的不純物とから
なり、抗折力（ＪＩＳ規格による測定）が 105Kgf/mm2
以上である請求項６に記載の硬質耐摩耗層複合被覆切削
工具。8. A TiCz (0.
65 ≦ z ≦ 0.85), 20 to 50% by weight of aluminum and / or aluminum compound, and unavoidable impurities, and the transverse rupture strength (measured by JIS standard) is 105 Kgf / mm 2
The hard wear resistant layer composite coated cutting tool according to claim 6, which is the above.
質焼結体基材(1) が、立方晶型窒化硼素粉末および／ま
たはウルツ鉱型窒化硼素45〜95体積％と結合材粉末とを
高圧焼結して得られた焼結体基材であり、結合材粉末は
Co、Ni、ＷＣ、TiＮ、TiＣおよびこれらの固溶体から成
る群の中から選択される少なくとも１種とアルミニウム
および／またはアルミニウム化合物 (および不可避的不
純物) とからなる請求項１〜４のいずれか一項に記載の
硬質耐摩耗層複合被覆工具。9. A hard sintered body substrate (1) containing high-pressure phase type boron nitride in an amount of 20% by volume or more comprises a cubic boron nitride powder and / or a wurtzite type boron nitride 45 to 95% by volume and a binder powder. Is a sintered compact base material obtained by high-pressure sintering of
5. At least one selected from the group consisting of Co, Ni, WC, TiN, TiC and solid solutions thereof, and aluminum and / or an aluminum compound (and inevitable impurities). A hard wear resistant layer composite coated tool according to item.
であり、平均粒径が３μｍ以下で抗折力（ＪＩＳ規格に
よる測定）が 105Kgf/mm2 以上である請求項９に記載の
硬質耐摩耗層複合被覆工具。10. The hard according to claim 9, wherein the high-pressure phase type boron nitride is cubic type boron nitride, the average particle size is 3 μm or less, and the transverse rupture strength (measured according to JIS standard) is 105 Kgf / mm 2 or more. Wear resistant layer composite coated tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15844095A JP3374599B2 (en) | 1995-06-01 | 1995-06-01 | Hard wear-resistant composite coated cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15844095A JP3374599B2 (en) | 1995-06-01 | 1995-06-01 | Hard wear-resistant composite coated cutting tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08323506A true JPH08323506A (en) | 1996-12-10 |
| JP3374599B2 JP3374599B2 (en) | 2003-02-04 |
Family
ID=15671823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15844095A Expired - Lifetime JP3374599B2 (en) | 1995-06-01 | 1995-06-01 | Hard wear-resistant composite coated cutting tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3374599B2 (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002543993A (en) * | 1999-05-06 | 2002-12-24 | サンドビック アクティエボラーグ | Cutting tools coated with PVD- |
| US6620491B2 (en) * | 2000-08-31 | 2003-09-16 | Sumitomo Electric Industries, Ltd. | Tool of a surface-coated boron nitride sintered compact |
| US6623850B2 (en) * | 2000-08-31 | 2003-09-23 | Sumitomo Electric Industries, Ltd. | Tool of a surface-coated boron nitride sintered compact |
| US6716544B2 (en) | 2000-03-08 | 2004-04-06 | Sumitomo Electric Industries, Ltd. | Coated sinter of cubic-system boron nitride |
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| JP2010524699A (en) * | 2006-04-21 | 2010-07-22 | エレメント シックス （プロダクション）（プロプライエタリィ） リミテッド | Cubic boron nitride composite material and tool |
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| US6811580B1 (en) * | 1999-05-06 | 2004-11-02 | Sandvik Ab | Inserts for metal cutting purposes |
| JP2002543993A (en) * | 1999-05-06 | 2002-12-24 | サンドビック アクティエボラーグ | Cutting tools coated with PVD- |
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| US6623850B2 (en) * | 2000-08-31 | 2003-09-23 | Sumitomo Electric Industries, Ltd. | Tool of a surface-coated boron nitride sintered compact |
| JP2007528795A (en) * | 2003-07-15 | 2007-10-18 | ケンナメタル インコーポレイテッド | Cutting tool and method for reducing wear trace width of cutting tool |
| DE10332101B4 (en) * | 2003-07-15 | 2016-02-04 | Kennametal Inc. | Cutting tool and method for its production |
| JP2008526525A (en) * | 2004-12-30 | 2008-07-24 | ウォルター アーゲー | Al2O3 multilayer plate |
| US8017225B2 (en) | 2005-12-22 | 2011-09-13 | Mitsubishi Materials Corporation | Cutting tool made of surface-coated cubic boron nitride-based ultrahigh pressure sintered material |
| JP2007283479A (en) * | 2006-03-24 | 2007-11-01 | Sumitomo Electric Ind Ltd | Surface-coated cutting tool |
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| WO2008146727A1 (en) * | 2007-05-30 | 2008-12-04 | Sumitomo Electric Hardmetal Corp. | Surface-coated cutting tool |
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