JPH07126833A - Hard coating body for cutting tool - Google Patents
Hard coating body for cutting toolInfo
- Publication number
- JPH07126833A JPH07126833A JP29271193A JP29271193A JPH07126833A JP H07126833 A JPH07126833 A JP H07126833A JP 29271193 A JP29271193 A JP 29271193A JP 29271193 A JP29271193 A JP 29271193A JP H07126833 A JPH07126833 A JP H07126833A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- complex
- layer
- flank
- cutting tool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 65
- 239000011248 coating agent Substances 0.000 title claims abstract description 60
- 238000005520 cutting process Methods 0.000 title claims abstract description 40
- 239000010410 layer Substances 0.000 claims abstract description 44
- 150000004767 nitrides Chemical class 0.000 claims abstract description 14
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 150000001247 metal acetylides Chemical class 0.000 claims abstract description 5
- 239000002356 single layer Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 23
- 239000000919 ceramic Substances 0.000 claims description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 5
- 229910000997 High-speed steel Inorganic materials 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 229910002090 carbon oxide Inorganic materials 0.000 claims description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 claims 1
- 239000001569 carbon dioxide Substances 0.000 claims 1
- 239000010936 titanium Substances 0.000 description 28
- 229910052719 titanium Inorganic materials 0.000 description 12
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 239000010408 film Substances 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 238000007733 ion plating Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 4
- 239000011195 cermet Substances 0.000 description 4
- 239000008199 coating composition Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005240 physical vapour deposition Methods 0.000 description 4
- 238000004544 sputter deposition Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 230000000873 masking effect Effects 0.000 description 2
- 229910004349 Ti-Al Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910004692 Ti—Al Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- -1 cemented carbide Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000010730 cutting oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 102220033831 rs145989498 Human genes 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013077 target material Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Physical Vapour Deposition (AREA)
- Chemical Vapour Deposition (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、フライス工具，旋削工
具，ドリル，エンドミルに代表される切削工具として最
適な切削工具用硬質被覆体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hard coating for a cutting tool most suitable as a cutting tool represented by a milling tool, a turning tool, a drill and an end mill.
【０００２】[0002]
【従来の技術】従来から、高速度鋼，超硬合金，サーメ
ット等の焼結合金または各種のセラミックス焼結体でな
る基材の表面に、化学蒸着法（ＣＶＤ法）や物理蒸着法
（ＰＶＤ法）により被膜を被覆した被覆体が切削工具と
して多数実用され提案されている。2. Description of the Related Art Conventionally, a chemical vapor deposition method (CVD method) or a physical vapor deposition method (PVD method) is applied to the surface of a base material made of a sintered alloy such as high speed steel, cemented carbide, cermet or various ceramics sintered bodies. A large number of coated bodies coated with a coating by the method) have been put to practical use and proposed as cutting tools.
【０００３】これらの切削工具用被覆体は、一般に逃げ
面とすくい面における被膜厚さおよび被膜材質を同一に
した被覆体として用いられるが、実用時には、逃げ面側
とすくい面側の受ける影響が異なるために、切削条件に
よっては極端に短寿命になるという問題がある。These cutting tool coatings are generally used as coatings having the same coating thickness and coating material on the flank and the rake face, but in practical use, the flank face and the rake face are affected. Since they are different, there is a problem that the life becomes extremely short depending on the cutting conditions.
【０００４】この問題を解決するための提案が多数行わ
れており、その代表的なものに、特開昭５２−１０８７
１号公報および特開昭５２−２８４７７号公報がある。Many proposals have been made to solve this problem, and a typical one of them has been disclosed in Japanese Patent Laid-Open No. 52-1087.
1 and JP-A-52-28477.
【０００５】[0005]
【発明が解決しようとする課題】切削工具用被覆体にお
ける逃げ面側とすくい面側に関する問題を解決しようと
した特開昭５２−１０８７１号公報には、超硬合金でな
る基材のすくい面に少なくとも窒化チタンが２〜１０μ
ｍの厚みに、逃げ面には少なくとも窒化チタンが５〜２
０μｍの厚みをＰＶＤにより被覆されている切削工具用
硬質被覆体について記載されている。Japanese Unexamined Patent Publication No. 52-10871, which is intended to solve the problems relating to the flank side and the rake surface side in the coating for a cutting tool, is disclosed in Japanese Patent Laid-Open No. 52-10871. At least titanium nitride is 2-10μ
m thickness and at least titanium nitride 5-2 on the flank
A hard coating for a cutting tool is described which is PVD coated with a thickness of 0 μm.
【０００６】同公報に記載の切削工具用被覆体は、高硬
度で耐フランク摩耗性に優れる炭化チタンを逃げ面に被
覆し、化学的に安定な窒化チタンをすくい面に被覆する
ことにより、切削工具としての寿命を高めようとしたも
のではあるが、高速切削になると窒化チタンの被膜が被
覆されたすくい面の損傷が激しくなり、チッピングまた
は欠損を引き起こして短寿命になるという問題がある。The cutting tool coating described in the above publication is characterized by coating the flank surface with titanium carbide having high hardness and excellent flank wear resistance, and coating the chemically stable titanium nitride on the rake surface. Although it is an attempt to extend the life as a tool, there is a problem that at high speed cutting, the rake face covered with the titanium nitride film is severely damaged, causing chipping or chipping and shortening the life.
【０００７】特開昭５２−２８４７７号公報には、耐摩
耗性を有する被膜をすくい面に比較的薄く、逃げ面に比
較的厚く被覆した切削工具用被覆超硬合金について記載
されている。Japanese Unexamined Patent Publication (Kokai) No. 52-28477 describes a coated cemented carbide for a cutting tool, in which a rake face is coated with a relatively thin film and a flank face is coated with a relatively thick film.
【０００８】同公報に記載の切削工具用被覆超硬合金
は、逃げ面とすくい面に同一材質で、異なった厚さの被
膜を被覆したことが記載されているが、切削時に影響を
及ぼす逃げ面の摩耗形態とすくい面の摩耗形態が相違す
るために、同一材質の被膜ではそれぞれの摩耗形態に耐
えることが困難となり、従来の被覆超硬合金と比較して
それほど大きな効果が期待できないという問題がある。In the coated cemented carbide for cutting tools described in the same publication, it is described that the flank face and the rake face are coated with a film of the same material and having different thicknesses, but the flank face has an influence on cutting. Since the wear morphology of the surface and the wear morphology of the rake face are different, it is difficult for the coating of the same material to withstand each wear morphology, and so much effect cannot be expected compared to conventional coated cemented carbide There is.
【０００９】本発明は、上述のような問題点を解決した
もので、具体的には、逃げ面とすくい面におけるそれぞ
れの被膜材質とその厚さをそれぞれ調整することによ
り、被膜の耐剥離性，耐クレーター摩耗性および耐フラ
ンク摩耗性の両方を高めて長寿命を達成した切削工具用
硬質被覆体の提供を目的とする。The present invention solves the above-mentioned problems. Specifically, the peeling resistance of the coating is adjusted by adjusting the coating material and the thickness of the coating on the flank and the rake face, respectively. The purpose of the present invention is to provide a hard coating for a cutting tool which has improved crater wear resistance and flank wear resistance and has achieved a long life.
【００１０】[0010]
【課題を解決するための手段】本発明者は、超硬合金や
サーメットでなる基材の表面に被膜を被覆してなる被覆
体を切削工具として用いた場合、特に高速切削条件で用
いた場合には、クレーター摩耗，フランク摩耗または被
膜の剥離でもって極端に短寿命になるという問題を検討
していたところ、クレーター摩耗が生じるすくい面とフ
ランク摩耗が生じる逃げ面とにおける被膜材質と被膜厚
さを主とする被膜構成を調整すると耐クレーター摩耗
性，耐フランク摩耗性および被膜の耐剥離性のすべてが
バランスよく向上し、長寿命になるという知見を得て、
本発明を完成するに至ったものである。Means for Solving the Problems The present inventor has found that when a coated body obtained by coating a surface of a base material made of cemented carbide or cermet with a coating is used as a cutting tool, particularly when used under high-speed cutting conditions. Has been studying the problem of extremely short life due to crater wear, flank wear or peeling of the coating. We have found that adjusting the coating composition, which mainly consists of, improves the crater wear resistance, flank wear resistance, and peeling resistance of the coating in a well-balanced manner, resulting in a long service life.
The present invention has been completed.
【００１１】すなわち、本発明の切削工具用硬質被覆体
は、高速度鋼，焼結合金またはセラミックス焼結体でな
る基材の少なくとも逃げ面とすくい面に被膜が被覆され
た切削工具用被覆体において、該逃げ面は、Ｔｉの炭化
物，窒化物，炭窒化物，炭酸化物，窒酸化物，炭窒酸化
物およびＴｉ含有の複合炭化物，複合窒化物，複合炭窒
化物，複合炭酸化物，複合窒酸化物，複合炭窒酸化物の
中の少なくとも１種の単層または多層でなる層厚１．５
〜５μｍのＴｉ元素含有被膜が被覆されており、該すく
い面は、Ｔｉの炭化物，窒化物，炭窒化物，炭酸化物，
窒酸化物，炭窒酸化物およびＴｉ含有の複合炭化物，複
合窒化物，複合炭窒化物，複合炭酸化物，複合窒酸化
物，複合炭窒酸化物の中の少なくとも１種の単層または
多層でなる層厚０．３〜１．０μｍの内層と、層厚５μ
ｍ以下でなる酸化アルミニウムの外層が被覆されている
ことを特徴とする。That is, the hard coating for a cutting tool of the present invention is a coating for a cutting tool in which at least a flank and a rake face of a base material made of high speed steel, a sintered alloy or a ceramics sintered body are coated with a coating. In the above, the flank includes a Ti carbide, a nitride, a carbonitride, a carbon oxide, a nitrogen oxide, a carbonitride oxide and a Ti-containing complex carbide, a complex nitride, a complex carbonitride, a complex carbonate, and a complex. A layer thickness of at least one single layer or a multilayer of at least one of nitrogen oxides and complex carbonitride oxides 1.5
A Ti element-containing film of ˜5 μm is coated, and the rake face has Ti carbide, nitride, carbonitride, carbon oxide,
Single or multiple layers of at least one selected from among nitrogen oxides, carbonitride oxides and Ti-containing complex carbides, complex nitrides, complex carbonitrides, complex carbonates, complex nitrides, complex carbonitrides. And an inner layer having a layer thickness of 0.3 to 1.0 μm and a layer thickness of 5 μm
It is characterized by being coated with an outer layer of aluminum oxide having a thickness of m or less.
【００１２】本発明の硬質被覆体における基材は、具体
的には、例えば従来から切削工具として用いられている
各種の高速度鋼、各種の超硬合金，ＴｉＣサーメット，
Ｎ含有ＴｉＣ系サーメット等の焼結合金またはＡｌ2Ｏ3
系セラミックス焼結体，Ｓｉ3Ｎ4系セラミックス焼結体
を挙げることができる。The base material in the hard coating of the present invention is specifically, for example, various high speed steels conventionally used as cutting tools, various cemented carbides, TiC cermets,
Sintered alloy such as N-containing TiC cermet or Al 2 O 3
Examples thereof include a system ceramics sintered body and a Si 3 N 4 system ceramics sintered body.
【００１３】これらの基材の逃げ面に被覆されるＴｉ元
素含有被膜は、具体的には、例えばＴｉＣ，ＴｉＮ，Ｔ
ｉ（Ｃ，Ｎ），Ｔｉ（Ｃ，Ｏ），Ｔｉ（Ｎ，Ｏ），Ｔｉ
（Ｃ，Ｎ，Ｏ），（Ｔｉ，Ａｌ）Ｃ，（Ｔｉ，Ｈｆ）
Ｃ，（Ｔｉ，Ｔａ）Ｃ，（Ｔｉ，Ａｌ）Ｎ，（Ｔｉ，Ｈ
ｆ）Ｎ，（Ｔｉ，Ｔａ）Ｎ，（Ｔｉ，Ａｌ）（Ｃ，
Ｎ），（Ｔｉ，Ｖ）（Ｃ，Ｎ），（Ｔｉ，Ｔａ）（Ｃ，
Ｎ），（Ｔｉ，Ａｌ）（Ｃ，Ｏ），（Ｔｉ，Ｔａ）
（Ｃ，Ｏ），（Ｔｉ，Ａｌ）（Ｎ，Ｏ），（Ｔｉ，Ｔ
ａ）（Ｎ，Ｏ），（Ｔｉ，Ａｌ）（Ｃ，Ｎ，Ｏ），（Ｔ
ｉ，Ｔａ）（Ｃ，Ｎ，Ｏ）を挙げることができる。この
Ｔｉ元素含有被膜は、層厚さが１．５μｍ未満になる
と、高速切削時における逃げ面摩耗が急速に進行し、短
寿命になること、逆に層厚さが５μｍを超えて厚くなる
と、被膜の剥離が生じ易くなり短寿命になるため、１．
５〜５μｍと定めたものであり、好ましくは、２．５〜
４．５μｍである。さらに、このＴｉ元素含有被膜の表
面に、層厚１μｍ以下の酸化アルミニウムの被膜を被覆
することは、逃げ面における耐酸化性，耐熱性を高める
ことができ、高速切削領域で用いる切削工具として特に
好ましいことである。The Ti element-containing coatings coated on the flanks of these substrates are, for example, TiC, TiN, T
i (C, N), Ti (C, O), Ti (N, O), Ti
(C, N, O), (Ti, Al) C, (Ti, Hf)
C, (Ti, Ta) C, (Ti, Al) N, (Ti, H
f) N, (Ti, Ta) N, (Ti, Al) (C,
N), (Ti, V) (C, N), (Ti, Ta) (C,
N), (Ti, Al) (C, O), (Ti, Ta)
(C, O), (Ti, Al) (N, O), (Ti, T
a) (N, O), (Ti, Al) (C, N, O), (T
i, Ta) (C, N, O). When the layer thickness of this Ti element-containing coating is less than 1.5 μm, flank wear during high-speed cutting progresses rapidly and the life becomes short, and conversely when the layer thickness exceeds 5 μm, Since peeling of the coating easily occurs and the life is shortened, 1.
5 to 5 μm, and preferably 2.5 to
It is 4.5 μm. Furthermore, by coating the surface of this Ti element-containing coating with a coating of aluminum oxide having a layer thickness of 1 μm or less, oxidation resistance and heat resistance on the flank can be enhanced, and it is particularly useful as a cutting tool used in a high-speed cutting region. It is preferable.
【００１４】一方、基材のすくい面に被覆される内層
は、具体的には、上述した逃げ面のＴｉ元素含有被膜と
同様の組成成分から選択することができるものであり、
この内層とＴｉ元素含有被膜とが異なった組成成分に選
定することもよいが、製造工程上から、同一組成成分に
選定し、内層の層厚さと、Ｔｉ元素含有被膜の層厚さと
の調整でもって、それぞれの作用効果を最大に引き出す
のが好ましいことである。この内層は、層厚さが０．３
μｍ未満になると、基材と外層である酸化アルミニウム
との付着性が低下し、剥離し易くなること、逆に１．０
μｍを超えて厚くなると、製造工程時における内層の被
覆時間が長くなり、コスト高となるために、０．３〜
１．０μｍと定めたものである。On the other hand, the inner layer coated on the rake face of the substrate is specifically selected from the same composition components as the Ti element-containing coating on the flank face,
It is possible to select different composition components for the inner layer and the Ti element-containing coating, but it is possible to select the same composition component from the manufacturing process and adjust the layer thickness of the inner layer and the layer thickness of the Ti element-containing coating. Therefore, it is preferable to maximize each action and effect. This inner layer has a layer thickness of 0.3.
If it is less than μm, the adhesiveness between the base material and the aluminum oxide as the outer layer is lowered, and peeling is facilitated.
When the thickness is more than μm, the coating time of the inner layer in the manufacturing process becomes long and the cost becomes high.
It is set to 1.0 μm.
【００１５】この内層の表面に被覆される酸化アルミニ
ウムの外層は、層厚が５μｍを超えて厚くなると、剥離
し易く、短寿命になるために、５μｍ以下と定めたもの
である。この外層と内層との合計の総膜厚は、耐剥離性
および製造工程上から、特に５μｍ以下でなることが好
ましいことである。The outer layer of aluminum oxide coated on the surface of the inner layer is easily peeled off when the layer thickness exceeds 5 μm and has a short life. It is preferable that the total total film thickness of the outer layer and the inner layer is 5 μm or less in view of the peeling resistance and the manufacturing process.
【００１６】以上のような逃げ面およびすくい面におけ
る被膜構成にすることでもって、本発明の硬質被覆体
は、切削工具としての長寿命化が達成されるのである
が、さらに少なくとも逃げ面およびすくい面にＴｉの窒
化物，炭窒化物，窒酸化物または炭窒酸化物でなる層厚
１μｍ以下の最外層を被覆することは、使用前または使
用後の判別等を含めた品質管理上から好ましいことであ
る。The hard coating of the present invention achieves a long life as a cutting tool by using the coating composition on the flank and the rake face as described above, but at least the flank and the rake face. It is preferable to cover the surface with an outermost layer of Ti nitride, carbonitride, oxynitride, or oxycarbonitride having a layer thickness of 1 μm or less from the viewpoint of quality control including determination before or after use. That is.
【００１７】本発明の硬質被覆体における逃げ面および
すくい面に形成されるそれぞれの被膜は、化学量論組成
または非化学量論組成からなる場合でもよく、逃げ面に
被覆される酸化アルミニウムの被膜およびすくい面に被
覆される外層の結晶構造としては、αー酸化アルミニウ
ムおよび／またはκー酸化アルミニウムからなることが
特に好ましい。The respective coatings formed on the flank and the rake face in the hard coating of the present invention may have a stoichiometric composition or a non-stoichiometric composition, and the aluminum oxide coating coated on the flank. The crystal structure of the outer layer coated on the rake face is particularly preferably made of α-aluminum oxide and / or κ-aluminum oxide.
【００１８】本発明の硬質被覆体は、従来からのＣＶＤ
法やＰＶＤ法により行うことができるもので具体的に
は、例えば逃げ面とすくい面とで、それぞれ異なった被
膜材質に構成する場合には、従来からのマスキング法や
試料取付治具の調整で行ない、逃げ面とすくい面とで、
それぞれ異なった被膜厚さに構成する場合には、従来か
らのマスキング法またはガス圧，試料取付治具，被膜作
製時間等の製造工程の調整でもって行うことができる。The hard coating of the present invention is formed by conventional CVD.
Method or PVD method. Specifically, for example, when different flanks and rake surfaces are made of different coating materials, the conventional masking method or adjustment of the sample mounting jig can be used. Do it, on the flank and the rake face,
When the coating thicknesses are different from each other, it can be performed by a conventional masking method or adjustment of the manufacturing process such as gas pressure, sample attachment jig, and film forming time.
【００１９】[0019]
【作用】本発明の硬質被覆体は、逃げ面に被覆されるＴ
ｉ元素含有被膜が基材と被膜との付着強度を高めると共
に、耐フランク摩耗性を最大限に高める作用をしてお
り、すくい面に被覆される内層が基材と外層との付着強
度の媒介的作用をし、外層が耐クレーター摩耗性を最大
限に高める作用をしているものである。The hard coating of the present invention has a T coated on the flank.
The i-element-containing coating enhances the adhesion strength between the base material and the coating and maximizes the flank wear resistance, and the inner layer coated on the rake face mediates the adhesion strength between the base material and the outer layer. The outer layer functions to maximize the crater abrasion resistance.
【００２０】[0020]
【実施例１】市販の超硬合金（ＩＳＯ規格、ＳＮＧＮ１
２０４０８形状、Ｐ３０相当材質）の基材を用いて、イ
オンプレーティング法（ＩＰと記載）とスパッター法
（Ｓと記載）とを組合わせて、表１に示した第１処理条
件および第２処理条件、または、第１処理条件，第２処
理条件および第３処理条件の工程を順次施して本発明品
１〜６の被覆体を得た。Example 1 Commercial cemented carbide (ISO standard, SNGN1
The first treatment condition and the second treatment shown in Table 1 by using a base material of 20408 shape and P30 equivalent material) in combination with the ion plating method (described as IP) and the sputtering method (described as S). The conditions, or the steps of the first treatment condition, the second treatment condition, and the third treatment condition were sequentially performed to obtain coated bodies of the products 1 to 6 of the present invention.
【００２１】比較として、上述の本発明品と同一の基材
を用いて、同様にイオンプレーティング法とスパッター
法でもって、表２に示した第１処理条件、または第１処
理条件および第２処理条件、もしくは第１処理条件，第
２処理条件および第３処理条件を施して比較品１〜９の
被覆体を得た。For comparison, the same base material as that of the above-described product of the present invention is used, and the first treatment condition shown in Table 2 or the first treatment condition and the second treatment condition are similarly obtained by the ion plating method and the sputtering method. The treatment conditions, or the first treatment condition, the second treatment condition, and the third treatment condition were applied to obtain coated bodies of Comparative Products 1 to 9.
【００２２】表１および表２に示した処理条件の内、イ
オンプレーティング法（ＩＰ）は、反応容器内に試料を
配置した後、容器内を３×１０-5Ｔｏｒｒの真空とし、
次いで表１および表２に記載した各ガス組成でもって、
２×１０-3Ｔｏｒｒの減圧とし、基材の温度５００℃，
基材バイアス−５０Ｖを印加し、表１の本発明品３の第
１処理条件のみＴｉーＡｌターゲットを用いた以外は、
他はすべてＴｉターゲットを用いるという条件でもって
表１および表２に記載した時間の間被覆した。このと
き、すくい面と逃げ面における被膜厚さの調整は、被膜
厚さを薄くしたい面には蒸着物質が制限されるような治
具を用いて行なった。Among the processing conditions shown in Tables 1 and 2, in the ion plating method (IP), after placing the sample in the reaction vessel, the vessel was evacuated to 3 × 10 −5 Torr,
Then, with each gas composition shown in Table 1 and Table 2,
Reduced pressure to 2 × 10 -3 Torr, substrate temperature 500 ° C,
A substrate bias of −50 V was applied, and a Ti—Al target was used only in the first treatment condition of the product 3 of the present invention in Table 1.
All others were coated for the times set forth in Tables 1 and 2 with the proviso that a Ti target was used. At this time, the adjustment of the film thickness on the rake face and the flank face was performed by using a jig in which the vapor deposition substance was restricted on the face where the film thickness was desired to be thin.
【００２３】また、表１および表２に示した処理条件の
内、スパッター法（Ｓ）は、反応容器内に試料を配置し
た後、容器内を５×１０-6Ｔｏｒｒの真空とし、次いで
表１および表２に記載した各ガス組成、ガス圧力および
ターゲット材質でもって、基材の温度５５０℃に加熱し
て表１および表２に記載した時間の間被覆した。このと
き、すくい面と逃げ面における被膜厚さの調整は、試料
面の設置方向とガス圧のコントロールでもって行なっ
た。Among the processing conditions shown in Tables 1 and 2, in the sputtering method (S), after placing the sample in the reaction vessel, the vessel was evacuated to 5 × 10 −6 Torr and then the With each gas composition, gas pressure and target material shown in Table 1 and Table 2, the substrate was heated to a temperature of 550 ° C. and coated for the time shown in Table 1 and Table 2. At this time, the adjustment of the film thickness on the rake face and the flank face was performed by controlling the installation direction of the sample surface and the gas pressure.
【００２４】[0024]
【表１】 [Table 1]
【００２５】[0025]
【表２】 以上のようにして得た本発明品１〜６および比較品１〜
９の逃げ面とすくい面における被膜について、走査型電
子顕微鏡とＸ線回折装置を用いて調査し、それぞれの結
果を表３および表４に示した。[Table 2] The present invention products 1 to 6 and the comparative products 1 to 1 obtained as described above
The coatings on the flank and rake face of No. 9 were investigated using a scanning electron microscope and an X-ray diffractometer, and the respective results are shown in Tables 3 and 4.
【００２６】[0026]
【表３】 [Table 3]
【００２７】[0027]
【表４】 次に、本発明品１〜６および比較品１〜９を用いて、被
削材：Ｓ４８Ｃ（硬さＨＢ２４０、直径２５０ｍｍ）、
切削速度：３００ｍｍ／ｍｉｎ、送り：０．３ｍｍ／ｒ
ｅｖ、切込み：１．５ｍｍ、水溶性切削油による湿式切
削条件でもって切削試験を行い、平均逃げ面摩耗量（Ｖ
B）が０．３ｍｍになったときを寿命、または切刃にチ
ッピングや欠損が発生した時を寿命とし、そのときの寿
命時間を求めて表５に示した。[Table 4] Next, using the present invention products 1 to 6 and the comparative products 1 to 9, a work material: S48C (hardness HB240, diameter 250 mm),
Cutting speed: 300 mm / min, feed: 0.3 mm / r
ev, depth of cut: 1.5 mm, a cutting test was performed under wet cutting conditions with water-soluble cutting oil, and the average flank wear amount (V
When B ) was 0.3 mm, the life was determined, or when chipping or chipping occurred on the cutting edge, the life was determined, and the life time was calculated and shown in Table 5.
【００２８】[0028]
【表５】 [Table 5]
【００２９】[0029]
【実施例２】実施例１における本発明品１の作製条件の
内、基材のみ、市販の窒素含有ＴｉＣ系サーメット、Ｓ
ｉＣウイスカー含有Ａｌ2Ｏ3系セラミックス焼結体、お
よびＳｉ3Ｎ4系セラミックス焼結体の基材に換えて、他
の条件は、ほぼ同様に処理して、それぞれの基材の逃げ
面およびすくい面が実施例１における本発明品１と同様
の被膜構成からなる本発明品７〜９を得た。Example 2 Among the manufacturing conditions of the product 1 of the present invention in Example 1, only the substrate was used, a commercially available nitrogen-containing TiC-based cermet, S
In place of the base material of the iC whisker-containing Al 2 O 3 -based ceramics sintered body and the Si 3 N 4 -based ceramics sintered body, other conditions were treated in substantially the same manner and the flank and Inventive products 7 to 9 having the same coating composition as the inventive product 1 in Example 1 on the rake face were obtained.
【００３０】比較として、実施例１における比較品６の
作製条件の内、基材のみ、上述の本発明品７〜９の基材
を用いて、他の条件は、ほぼ同様に処理して、それぞれ
の基材の逃げ面およびすくい面が実施例１における比較
品６と同様の被膜構成からなる比較品１０〜１２を得
た。By way of comparison, among the manufacturing conditions of the comparative product 6 in Example 1, only the base material, the above-mentioned base materials of the products 7 to 9 of the present invention were used, and other conditions were treated in substantially the same manner. Comparative products 10 to 12 were obtained in which the flank and rake face of each base material had the same coating composition as the comparative product 6 in Example 1.
【００３１】こうして得た本発明品７〜９および比較品
１０〜１２を用いて、実施例１における切削条件でもっ
て切削試験を行い、その結果を表６に示した。Using the products 7 to 9 of the present invention and the comparative products 10 to 12 thus obtained, a cutting test was conducted under the cutting conditions of Example 1, and the results are shown in Table 6.
【００３２】[0032]
【表６】 [Table 6]
【００３３】[0033]
【発明の効果】本発明の硬質被覆体は、従来の被覆体に
比べて、被膜の剥離が生じ難く、逃げ面およびすくい面
におけるそれぞれの耐摩耗性に優れていることから、切
削工具として用いたときに約４．５〜１８倍も優れた寿
命時間を示し、本発明の硬質被覆体から外れた被覆体に
比べて、約４〜８０倍も優れた寿命時間を示すという効
果がある。EFFECTS OF THE INVENTION The hard coating of the present invention is used as a cutting tool because it is less likely to cause peeling of the coating and has excellent wear resistance on the flank and the rake face as compared with the conventional coating. In this case, it has an excellent life time of about 4.5 to 18 times, and has an effect of showing a life time of about 4 to 80 times as excellent as that of the coating material deviated from the hard coating material of the present invention.
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ２３Ｃ 16/30 26/00 Ｃ Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location C23C 16/30 26/00 C
Claims (4)
焼結体でなる基材の少なくとも逃げ面とすくい面に被膜
が被覆された切削工具用被覆体において、該逃げ面は、
Ｔｉの炭化物，窒化物，炭窒化物，炭酸化物，窒酸化
物，炭窒酸化物およびＴｉ含有の複合炭化物，複合窒化
物，複合炭窒化物，複合炭酸化物，複合窒酸化物，複合
炭窒酸化物の中の少なくとも１種の単層または多層でな
る層厚１．５〜５μｍのＴｉ元素含有被膜が被覆されて
おり、該すくい面は、Ｔｉの炭化物，窒化物，炭窒化
物，炭酸化物，窒酸化物，炭窒酸化物およびＴｉ含有の
複合炭化物，複合窒化物，複合炭窒化物，複合炭酸化
物，複合窒酸化物，複合炭窒酸化物の中の少なくとも１
種の単層または多層でなる層厚０．３〜１．０μｍの内
層と、層厚５μｍ以下でなる酸化アルミニウムの外層が
被覆されていることを特徴とする切削工具用硬質被覆
体。1. A cutting tool coating comprising a base material made of high-speed steel, a sintered alloy or a ceramics sintered body and at least a flank and a rake surface of which are coated with a flank,
Ti carbide, nitride, carbonitride, carbon oxide, oxynitride, carbonitride oxide and Ti-containing complex carbide, complex nitride, complex carbonitride, complex carbonate, complex nitride oxide, complex carbonitride A Ti element-containing coating having a layer thickness of 1.5 to 5 μm, which is a single layer or a multi-layer of at least one kind of oxide, is coated, and the rake face has a Ti carbide, a nitride, a carbonitride, or a carbon dioxide. At least one of oxides, oxynitrides, oxycarbonitrides and complex carbides containing Ti, complex nitrides, complex carbonitrides, complex carbonates, complex oxynitrides, complex oxycarbonitrides
A hard coating for a cutting tool, characterized by being coated with an inner layer having a layer thickness of 0.3 to 1.0 [mu] m made of a single layer or multiple layers of the seed and an outer layer of aluminum oxide having a layer thickness of 5 [mu] m or less.
表面に層厚１μｍ以下の酸化アルミニウムの被膜が被覆
されていることを特徴とする請求項１記載の切削工具用
硬質被覆体。2. The hard coating for a cutting tool according to claim 1, wherein the flank is formed by coating the surface of the Ti element-containing coating with a coating of aluminum oxide having a layer thickness of 1 μm or less.
の合計の総膜厚が５μｍ以下でなることを特徴とする請
求項１または請求項２記載の切削工具用硬質被覆体。3. The hard coating for a cutting tool according to claim 1, wherein the rake face has a total total film thickness of the inner layer and the outer layer of 5 μm or less.
よび上記すくい面にＴｉの窒化物，炭窒化物，窒酸化物
または炭窒酸化物でなる層厚１μｍ以下の最外層が被覆
されていることを特徴とする請求項１，２または請求項
３記載の切削工具用硬質被覆体。4. The outermost layer having a layer thickness of 1 μm or less, which is made of Ti nitride, carbonitride, oxynitride or oxycarbonitride, is coated on at least the flank and the rake surface of the coating. The hard coating for a cutting tool according to claim 1, 2, or 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29271193A JPH07126833A (en) | 1993-10-28 | 1993-10-28 | Hard coating body for cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29271193A JPH07126833A (en) | 1993-10-28 | 1993-10-28 | Hard coating body for cutting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07126833A true JPH07126833A (en) | 1995-05-16 |
Family
ID=17785326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29271193A Withdrawn JPH07126833A (en) | 1993-10-28 | 1993-10-28 | Hard coating body for cutting tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07126833A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007075941A (en) * | 2005-09-13 | 2007-03-29 | Ngk Spark Plug Co Ltd | Cutting insert and cutting tool |
| JP2007111838A (en) * | 2005-10-21 | 2007-05-10 | Sumitomo Electric Hardmetal Corp | Replaceable cutting edge |
-
1993
- 1993-10-28 JP JP29271193A patent/JPH07126833A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007075941A (en) * | 2005-09-13 | 2007-03-29 | Ngk Spark Plug Co Ltd | Cutting insert and cutting tool |
| JP2007111838A (en) * | 2005-10-21 | 2007-05-10 | Sumitomo Electric Hardmetal Corp | Replaceable cutting edge |
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| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
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