JPH01180980A - Coated tool material - Google Patents
Coated tool materialInfo
- Publication number
- JPH01180980A JPH01180980A JP531788A JP531788A JPH01180980A JP H01180980 A JPH01180980 A JP H01180980A JP 531788 A JP531788 A JP 531788A JP 531788 A JP531788 A JP 531788A JP H01180980 A JPH01180980 A JP H01180980A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum oxide
- coated
- al2o3
- layer
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 54
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 5
- 150000004767 nitrides Chemical class 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 3
- 239000000919 ceramic Substances 0.000 claims abstract description 3
- 239000011195 cermet Substances 0.000 claims abstract description 3
- 229910052735 hafnium Inorganic materials 0.000 claims abstract description 3
- 239000010959 steel Substances 0.000 claims abstract description 3
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 30
- 239000010936 titanium Substances 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 2
- 150000001247 metal acetylides Chemical class 0.000 claims description 2
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims 1
- 238000000576 coating method Methods 0.000 abstract description 23
- 239000011248 coating agent Substances 0.000 abstract description 21
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052593 corundum Inorganic materials 0.000 abstract description 9
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract description 9
- 229910052594 sapphire Inorganic materials 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 21
- 230000000052 comparative effect Effects 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 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 2
- BYFGZMCJNACEKR-UHFFFAOYSA-N Al2O Inorganic materials [Al]O[Al] BYFGZMCJNACEKR-UHFFFAOYSA-N 0.000 description 1
- 101100202556 Arabidopsis thaliana SCPL8 gene Proteins 0.000 description 1
- 101100149742 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) SNG1 gene Proteins 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- -1 and carbonitride Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- WHJFNYXPKGDKBB-UHFFFAOYSA-N hafnium;methane Chemical compound C.[Hf] WHJFNYXPKGDKBB-UHFFFAOYSA-N 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- NMEHNETUFHBYEG-IHKSMFQHSA-N tttn Chemical compound C([C@@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CC=1C=CC(O)=CC=1)C(=O)N[C@@H](CO)C(=O)N[C@@H](CC=1NC=NC=1)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](C)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](C(C)C)C(=O)NCC(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N1[C@@H](CCC1)C(=O)NCC(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCCN)C(O)=O)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CCSC)NC(=O)[C@H](CCC(O)=O)NC(=O)[C@H](CCC(O)=O)NC(=O)[C@H](CC(O)=O)NC(=O)[C@@H](NC(=O)[C@H]1N(CCC1)C(=O)[C@H](CCC(N)=O)NC(=O)[C@@H](N)[C@@H](C)O)[C@@H](C)O)C1=CC=CC=C1 NMEHNETUFHBYEG-IHKSMFQHSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、工具として用いる被覆工具材料に係り、さら
に詳細には少な（とも酸化アルミニウムの被覆層を有す
る被覆工具材料の性能を向上させるように改良したもの
である。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a coated tool material used as a tool, and more particularly to a method for improving the performance of a coated tool material having a coating layer of aluminum oxide. This is an improved version.
従来、少な（とも酸化アルミニウムを被覆した工具材料
として、特公昭５２−１３２０１号公報に開示されてい
るように硬物質体からなる母材に隣接してＴｉ 、 Ｚ
ｒ、 Ｈｆ 、 Ｔａの炭化物および窒化物の被膜を形
成し、次いで酸化アルミニウムまたは酸化ジルコニウム
の被膜を設けた工具材料がある。Conventionally, as a tool material coated with aluminum oxide, Ti and Z were used adjacent to a base material made of a hard material as disclosed in Japanese Patent Publication No. 52-13201.
There are tool materials in which a coating of carbides and nitrides of r, Hf, Ta is formed, followed by a coating of aluminum oxide or zirconium oxide.
また、特公昭５３−２８８７２号公報に示されているよ
うに超硬合金を母材とし、その表面へα−酸化アルミニ
ウムを１〜２０μ鯛被覆した工具材料もある。Furthermore, as shown in Japanese Patent Publication No. 53-28872, there is also a tool material in which the base material is made of cemented carbide and the surface thereof is coated with 1 to 20 μm of α-aluminum oxide.
しかしながら、硬物質体を母材とし、その表面へ前記し
たような酸化アルミニウムを被覆した工具材料は、炭化
チタンや窒化チタンまたは炭窒化チタンなどを１層以上
被覆した工具材料に比べると、すぐれた耐摩耗性を示す
が、高速切削における連続切削加工において安定した耐
摩耗性を示さなかったり、断続の旋削加工やフライス切
削加工などにおいて耐欠損性にや＼問題を有している。However, tool materials whose base material is a hard material and whose surface is coated with aluminum oxide as described above are superior to tool materials whose surfaces are coated with one or more layers of titanium carbide, titanium nitride, titanium carbonitride, etc. Although it exhibits wear resistance, it does not show stable wear resistance during continuous cutting at high speeds, and has problems with chipping resistance during intermittent turning and milling.
以上のように酸化アルミニウムの被膜を形成させた工具
材料においても切削条件によっては必ずしも所望する工
具寿命を満足させてはいない。これは酸化アルミニウム
被膜自体の靭性の不足や、酸化アルミニウム被膜と隣接
する他の層、あるいは硬物質体からなる母材との密着性
が不足することが起因するものと推察される。As described above, even tool materials on which an aluminum oxide film is formed do not always satisfy the desired tool life depending on the cutting conditions. This is presumed to be due to insufficient toughness of the aluminum oxide coating itself, insufficient adhesion between the aluminum oxide coating and other layers adjacent to it, or with a base material made of a hard material.
本発明は、上記した問題点に鑑みなしたもので、酸化ア
ルミニウム自体の靭性を向上させ、しかも硬物質体から
なる母材や他の層との密着性を高めて耐摩耗性ならびに
耐欠損性を大きく改善させ所期の工具寿命が得られる被
覆工具材料を提供せんとするものである。The present invention was developed in view of the above-mentioned problems, and it improves the toughness of aluminum oxide itself, and also improves the adhesion with the base material made of hard material and other layers, thereby improving wear resistance and chipping resistance. The object of the present invention is to provide a coated tool material that greatly improves the tool life and provides the desired tool life.
本発明は、前々記した問題点を下記する手段によって解
決したものである。The present invention solves the above-mentioned problems by the following means.
すなわち、超硬合金やサーメットあるいはセラミックス
または特殊鋼などからなる硬質物体を母材とし、該母材
の表面へ少な（とも酸化アルミニウムを０．５〜２０μ
ｍ被覆した工具材料の前記した酸化アルミニウム層部の
下層をα−酸化アルミニウムとし、その上層側をκ−酸
化アルミニウムとさせたものである。That is, a hard object made of cemented carbide, cermet, ceramics, or special steel is used as a base material, and a small amount (0.5 to 20 μm of aluminum oxide) is applied to the surface of the base material.
The lower layer of the aluminum oxide layer portion of the m-coated tool material is made of α-aluminum oxide, and the upper layer is made of κ-aluminum oxide.
少なくとも酸化アルミニウム被膜を有する被覆工具の切
削特性と、その被膜形成の条件を種々変化させて作った
特性の異なる酸化アルミニウム層との関係を調べたとこ
ろ、α−酸化アルミニウムは酸化アルミニウムのなかで
最も安定した結晶状態であって、しかも高温において形
成され易いことがわかった。When we investigated the relationship between the cutting characteristics of a coated tool that has at least an aluminum oxide coating and aluminum oxide layers with different characteristics made by varying the coating formation conditions, it was found that α-aluminum oxide is the best among aluminum oxides. It was found that it is in a stable crystalline state and is easily formed at high temperatures.
しかし、高温下でα−酸化アルミニウムを形成させると
酸化アルミニウムの粒子が粗くなり耐摩耗性は低下する
けれども酸化アルミニウム以外の層ないしは前記した硬
物質体からなる母材との密着性にすぐれるものとなるこ
とが分った。However, when α-aluminum oxide is formed at high temperatures, the particles of aluminum oxide become coarse and the wear resistance decreases; It turns out that
一方、に−酸化アルミニウムは、α−酸化アルミニウム
よりも低い温度で形成させることはできるが、α−酸化
アルミニウムに比べて、や＼安定性に欠けるきらいはあ
るけれども粒子そのものは非常に微細であって耐摩耗性
や耐欠損性は良好なものである。On the other hand, aluminum oxide can be formed at a lower temperature than α-aluminum oxide, but the particles themselves are very fine, although they tend to be less stable than α-aluminum oxide. It has good wear resistance and chipping resistance.
そこで、硬物質体からなる母材に前々記した各層を被覆
するにあたって、密着性および生産性が高く、しかも安
定性に富むα−酸化アルミニウムを下層部とさせ、その
上層部に粒子が微細であるκ−酸化アルミニウムを形成
させることによって酸化アルミニウムに接する酸化アル
ミニウム以外の層、すなわちチタンやジルコニウムまた
はハフニウムの炭化物や窒化物および炭窒化物などと硬
物質体からなる母材との密着性を向上させ、耐摩耗性に
富むのと同時に耐欠損性にもすぐれる少なくとも酸化ア
ルミニウム被膜を有する被覆工具材料が得られることを
見いだしたものである。Therefore, when coating the above-mentioned layers on the base material made of hard material, α-aluminum oxide, which has high adhesion and productivity, and is highly stable, is used as the lower layer, and the upper layer is made of α-aluminum oxide, which has fine particles. By forming κ-aluminum oxide, the adhesion between a layer other than aluminum oxide in contact with aluminum oxide, such as titanium, zirconium, or hafnium carbide, nitride, and carbonitride, and a base material made of a hard material can be improved. It has been discovered that it is possible to obtain a coated tool material having at least an aluminum oxide coating which has improved wear resistance and chipping resistance at the same time.
なお、硬物質体からなる母材の表面に少なくとも酸化ア
ルミニウム被膜を形成するにあたり、α−酸化アルミニ
ウムを下層部とし、その上層部をκ−酸化アルミニウム
とした理由は、これが逆になると、α−酸化アルミニウ
ムの形成中にκ−酸化アルミニウムの一部がα−酸化ア
ルミニウムに変態してしまうことによって酸化アルミニ
ウム被膜の表面粒子が粗くなって耐摩耗性や耐欠損性が
損われるからである。The reason for forming at least an aluminum oxide film on the surface of a base material made of a hard material is that α-aluminum oxide is used as the lower layer and κ-aluminum oxide is used as the upper layer. This is because part of the κ-aluminum oxide transforms into α-aluminum oxide during the formation of aluminum oxide, which causes the surface particles of the aluminum oxide coating to become rough, impairing wear resistance and chipping resistance.
また、に−ＡＪｈＯａ／α−Ａｌ２Ｏ３の２段層のにの
結晶形の比率（に／α）を０．１〜１０に限定した理由
は、に／α＜０．１になると粒子の細いκ−酸化アルミ
ニウムの効果がほとんどみられず、逆にに／α〉１０に
なると、酸化アルミニウム層と、その他の層部（例えば
炭化チタン）との密着性が低下して、いずれも所ル］の
工具寿命は得られない。In addition, the reason why the ratio of the crystal form (ni/α) in the two-layer layer of Ni-AJhOa/α-Al2O3 was limited to 0.1 to 10 is that when Ni/α<0.1, the grains become thin κ. -Almost no effect of aluminum oxide is observed, and on the contrary, when /α>10, the adhesion between the aluminum oxide layer and other layers (e.g. titanium carbide) decreases, and in both cases Tool life cannot be obtained.
そして、に−酸化アルミニウムとα−酸化アルミニウム
からなる酸化アルミニウムの層厚は、０．５μｍ未満で
は被覆工具材料としての耐摩耗性が不足し、１０μｍを
上廻ると被膜形成のための時間が大巾にか＼リコスト的
な問題を有するのと耐欠損性が低下する。If the layer thickness of aluminum oxide consisting of aluminum oxide and α-aluminum oxide is less than 0.5 μm, the wear resistance as a coated tool material will be insufficient, and if it exceeds 10 μm, it will take a long time to form the coating. There are problems with the width and cost, and the fracture resistance decreases.
以下、本発明の実施例について述べる。 Examples of the present invention will be described below.
実施例１
超硬合金Ｐ２０相当品からなる硬物質体（形番： ＣＮ
ＭＧＩ ２０４０８ＧＧ）をＣＶＤコーティング炉内に
設置し、まず２０Ｔｏｒｒの減圧下１０００℃の加熱雰
囲気で、５％Ｔ ｉ ＣＨ４，１０％ ＣＨ４、残りを
Ｈ２の混合ガスの気流中にて、その表面へＴｉＣを５μ
ｍ被覆した。次いで１１００℃まで加熱し５９６Ａ Ｉ
Ｃｌ ３．５ ％ ＣＯ２、残りＨ２からなる混合気流
中において２時間をかけてα−Ａｌ２Ｏ３を２μｍ形成
させ、さらに１０６０℃にて３９６ＡＩＣＩ３、残りＨ
２からなる混合気流中にて１時間を加えてに−Ａｌ２Ｏ
３被膜を０．５μｍ形成させて本発明になる被覆工具Ａ
を得た。Example 1 Hard material body made of cemented carbide P20 equivalent (model number: CN
MGI 20408GG) was installed in a CVD coating furnace, and TiC was first applied to its surface in a heated atmosphere of 1000°C under a reduced pressure of 20 Torr in an air flow of a mixed gas of 5% Ti CH4, 10% CH4, and the rest H2. 5μ
m coated. Then, it was heated to 1100°C and 596A I
α-Al2O3 was formed to a thickness of 2 μm over 2 hours in a mixed gas flow consisting of 3.5% Cl, CO2, and the remainder H2, and then at 1060°C, 396AICI3, the remainder H2 was formed.
-Al2O for 1 hour in a mixed gas stream consisting of 2
3 Coated tool A of the present invention by forming a coating of 0.5 μm
I got it.
次に上記の方法と類似した条件で、被膜形成時間を変え
て本発明になる被覆工具Ｂを得た。Next, a coated tool B according to the present invention was obtained under similar conditions to the above method but with different coating formation times.
なお、上記した本発明になる該工具ならびに比較工具Ｃ
，Ｄの詳細を表−１に示す。In addition, the above-mentioned tool according to the present invention and comparative tool C
, D are shown in Table 1.
表−１
実施例２
超硬合金Ｐ３０相当品からなる硬物質体をＣＶＤコーテ
ィング炉内に設置し、まず２゜Ｔｏｒｒ の減圧下で１
０００℃の加熱雰囲気で５９６ＴｉＣＩ１４．１０％Ｃ
Ｈ４、残りＨ２の混合気流中にて、その表面へＴｉＣを
３μｍ被覆した。Table 1 Example 2 A hard material made of cemented carbide P30 or equivalent was placed in a CVD coating furnace, and first coated under a reduced pressure of 2° Torr.
596TiCI14.10%C in a heating atmosphere of 000℃
The surface was coated with TiC to a thickness of 3 μm in a mixed gas flow of H4 and the remaining H2.
次に、５９６ＴｉＣＪ４．８９６ＣＨ４，２９６ＣＯ２
、残りＨ２の混合ガス気流中にてＴｉ（Ｃ，Ｏ）を１〜
２μｍ被覆した。その後１１００℃にて５９６ Ａ Ｉ
！ ＣＡａ、５％ＣＯ２、残りＨ２からなる混合ガス気
流中にα−ＡｌｚＯａを１．５μｍ被覆 ′し、さらに
１０６０℃にて３％Ａ Ｉ ＣＡ’ ｓ、３９６ＣＯ２
、残りＨ２からなる混合気流中にてに−Ａ６２０ａを０
．５ ｔｔｔｎ形成させ、さらに１０００℃にて５％Ｔ
ｉ ＣＩＩ ４．１０９６Ｎ２、残りＨ２からなる混
合気流中にてＴｉＮを１μｍ被覆させた本発明になる被
覆工具Ｅを得た。Next, 596TiCJ4.896CH4,296CO2
, Ti(C,O) from 1 to 1 in the remaining H2 mixed gas stream.
It was coated with a thickness of 2 μm. After that, 596 A I at 1100℃
! α-AlzOa was coated to a thickness of 1.5 μm in a mixed gas stream consisting of CAa, 5% CO2, and the remainder H2, and further coated with 3% AI CA's and 396 CO2 at 1060°C.
, -A620a is 0 in the mixture flow consisting of the remaining H2.
．． 5 tttn was formed, and further 5% T was added at 1000°C.
A coated tool E according to the present invention was obtained in which TiN was coated to a thickness of 1 μm in a mixed air flow consisting of i CII 4.1096N2 and the remainder H2.
また、上記と類似の方法で被覆処理時間のみを変えて本
発明になる被覆工具Ｆを得た。Further, a coated tool F according to the present invention was obtained using a method similar to that described above but only changing the coating treatment time.
上記した本発明になる該工具ならびに比較工具Ｇ、Ｈの
詳細を表−２に示した。Details of the tool according to the present invention and comparative tools G and H described above are shown in Table 2.
表−２
実施例３
ＡＡ’２０３粉末にＳｉＣウィスカーを４Ｑｗｔ％含有
させた繊維強化型複合焼結硬物質体（ＳＮＧＩ ２０４
１２）をＣＶＤコーティング炉内へ設置し、これを１１
００℃の加熱状態で１５ Ｔｏｒｒの減圧下とさせ、５
４ＡＩＣ１ｓ、５５％ ＣＯ２、残りＨ２からなる混合
ガス気流中にて前記硬物質体の表面へα−ＡＩ！２０ａ
を２μｍ被覆し、さらに１０６０℃にて３％ＡＩＣ＃１
３．３９６ＣＯｚ、残りＨ２からなる混合ガス気流中で
に−Ａｌ２Ｏ３を１μｍ被覆して本発明になる被覆工具
■を得た。Table 2 Example 3 Fiber-reinforced composite sintered hard material body (SNGI 204) containing 4Qwt% of SiC whiskers in AA'203 powder
12) is installed in the CVD coating furnace, and this is
Under a reduced pressure of 15 Torr while heating at 00°C,
α-AI! onto the surface of the hard material in a mixed gas stream consisting of 4AIC1s, 55% CO2, and the remainder H2! 20a
coated with 2 μm of AIC #1 at 1060°C.
In a mixed gas flow consisting of 3.396 COz and the remainder H2, -Al2O3 was coated to a thickness of 1 .mu.m to obtain a coated tool (2) of the present invention.
また、上記と類似した被覆方法で被覆処理時間を変えて
被覆工具Ｉの表面にさらにＴｉＮを１μｍ被覆した本発
明になる被覆工具Ｊを得た。Further, a coated tool J according to the present invention was obtained in which the surface of the coated tool I was further coated with 1 μm of TiN using a coating method similar to that described above but varying the coating treatment time.
以上の本発明になる該工具ならびは比較工具に、Ｌの詳
細を表−３に示した。Table 3 shows the details of L in the tool according to the present invention and the comparative tool.
表−３
実施例４
Ｓｉ３Ｎ４ を主成分とする焼結硬物質体（ＳＮＧ１
２０４１２）をＣＶＤコーティング炉内に設置し、これ
を１０００℃の加熱状態で２０ Ｔｏｒｒの減圧下とさ
せ、５％ＴｉＣｌ４．１０％Ｎ２、残りＨ２からなる混
合ガス気流中にてＴｉＮを２．５ μｍ被覆し、次いで
１１００℃にて５９６ＡＩＣｇ３．５％ＣＯ２、残りＨ
２からなる混合ガス気流中にてα−ＡｈＯａを１μｍ、
１０５０℃にて３％ＡＡＩＣＪａ、３５％ ＣＯ２、残
りＨ２からなる混合ガス気流中にてに−Ａ＃２０ｇを形
成させて本発明になる被覆工具Ｍを得た。Table 3 Example 4 Sintered hard material body mainly composed of Si3N4 (SNG1
20412) was placed in a CVD coating furnace, heated to 1000°C and under a reduced pressure of 20 Torr, 2.5% TiN was coated in a mixed gas flow consisting of 5% TiCl, 4.10% N2, and the remainder H2. μm coating, then 596AICg 3.5% CO2 at 1100℃, balance H
1 μm of α-AhOa in a mixed gas flow consisting of 2,
A coated tool M according to the present invention was obtained by forming 20 g of -A# in a mixed gas stream consisting of 3% AAICJa, 35% CO2, and the remainder H2 at 1050°C.
そして、上記と類似した被覆方法で、被覆処理時間を変
えることによって本発明になる被覆工具Ｎ、Ｏを得た。Then, coated tools N and O according to the present invention were obtained by using a coating method similar to that described above but varying the coating treatment time.
以上の本発明になる該工具ならびに比較工具Ｐ、Ｑ、Ｈ
の詳細を表−４に示した。The above-mentioned tools of the present invention and comparative tools P, Q, and H
The details are shown in Table 4.
表−４
〔発明の効果〕
表−１に示した被覆工具を用いて切削速度１２０、ｎ／
、１．、送り０．２−／ｒ−ｖ、切込み２．５ ｍｍ
にて被削材ＳＮＣＭ４４７の連続切削テストを行い、逃
げ面摩耗幅が０．３ 、、、ｎに達するまでの時間を測
定した結果、Ａは１５分、Ｂは１７分、Ｃは８分、Ｄは
６分であった。Table 4 [Effect of the invention] Using the coated tool shown in Table 1, the cutting speed was 120, n/
, 1. , feed 0.2-/r-v, depth of cut 2.5 mm
A continuous cutting test was conducted on the work material SNCM447 at D was 6 minutes.
また、切削速度１２０．、／、、ｉ、、送り０．４ｍ
ｍ／ ｒ ｔ ｖ、切込み２．５ｍ−にて軸方向に４つ
の溝を形成した被削材ＳＣＭ４４５を用いて断続切削テ
ストを行い、試料が欠損にいたるまでの衝撃回数を求め
た結果、Ａは２８４０回、Ｂは３０３０回に対し、Ｃは
１７６０回、Ｄは２１２０回であった。In addition, the cutting speed was 120. , /, ,i, ,Feed 0.4m
An interrupted cutting test was conducted using a workpiece material SCM445 in which four grooves were formed in the axial direction at a depth of cut of 2.5 m and a cutting depth of 2.5 m, and the number of impacts until the sample fractured was determined. was 2,840 times, B was 3,030 times, C was 1,760 times, and D was 2,120 times.
表−２に示した被覆工具を上記と同様の旋削テストをお
こなった結果、逃げ面摩耗幅がＱ、３ｍｍに達するまで
の時間は、Ｅが１７分、Ｆが１８分、Ｇが６分、Ｈは９
分であった。As a result of conducting the same turning test as above on the coated tools shown in Table 2, the time required for the flank wear width to reach Q, 3 mm was 17 minutes for E, 18 minutes for F, 6 minutes for G, H is 9
It was a minute.
また衝撃回数はＥが３２４０回、Ｆが３１７０回に対し
、Ｇは１６００回、Ｈは１７５０回であった。Further, the number of impacts was 3240 times for E and 3170 times for F, 1600 times for G and 1750 times for H.
表−３に示した被覆工具は、逃げ面摩耗幅がＱ、３ｍｙ
＋＋＋に達するまでの時間が、■は２０分、Ｊは１８分
、Ｋは１１分、Ｌは１０分であり、衝撃回数は、■が５
８６０回、Ｊは５７２０回に対し、Ｋは４２００回、Ｌ
は３１６０回であった。The coated tool shown in Table 3 has a flank wear width of Q, 3my.
The time it takes to reach +++ is 20 minutes for ■, 18 minutes for J, 11 minutes for K, and 10 minutes for L, and the number of impacts is 5 for ■.
860 times, J 5720 times, K 4200 times, L
was 3160 times.
また表−４に示した被覆工具においては、逃げ面摩耗幅
が０．３．ｍに達するまでの時間が、Ｍは１３分、Ｎ１
ｐ１１４分、ｏは１２分、Ｐは８分、Ｑは７分、Ｒは５
分であり、衝撃回数は、Ｍが６７２０回、Ｎは６６９０
回、０は５９５０回であったのに対し、Ｐは４８６０回
、Ｑは４７９０回、Ｒは２９８０回であった。Furthermore, in the coated tools shown in Table 4, the flank wear width was 0.3. The time it takes to reach m is 13 minutes, N1
p114 minutes, o 12 minutes, P 8 minutes, Q 7 minutes, R 5
minutes, and the number of impacts is 6720 times for M and 6690 times for N.
0 was 5950 times, P was 4860 times, Q was 4790 times, and R was 2980 times.
本発明は、以上述べたとおり、酸化アルミニウム層の下
層部をα−酸化アルミニウムとし、その上層部をκ−酸
化アルミニウムトシたことによって優れた耐摩耗性と耐
欠損性を有し、安定した切削性が維持できる被覆工具材
料となった。As described above, the present invention has excellent wear resistance and chipping resistance, and stable cutting by using α-aluminum oxide as the lower layer of the aluminum oxide layer and κ-aluminum oxide as the upper layer. This resulted in a coated tool material that maintains its properties.
Claims (2)
は特殊鋼などの硬物質体を母材とし、該母材の表面へ酸
化アルミニウム、または該母材と該酸化アルミニウムと
の間、および前記酸化アルミニウムの表面部へチタンや
ジルコニウムあるいはハフニウムなどの炭化物や窒化物
ないしは炭窒化物の１種以上を０．５〜２０μｍ被覆し
た工具材料において、前記した酸化アルミニウム層の下
層部をα−酸化アルミニウムとし、その上層側をκ−酸
化アルミニウムとさせたことを特徴とする被覆工具材料
。(1) A hard material body such as cemented carbide, cermet, ceramics, or special steel is used as a base material, and aluminum oxide is applied to the surface of the base material, or between the base material and the aluminum oxide, and the surface of the aluminum oxide. In a tool material coated with 0.5 to 20 μm of one or more carbides, nitrides, or carbonitrides such as titanium, zirconium, or hafnium, the lower layer of the aluminum oxide layer described above is α-aluminum oxide, and the upper layer is α-aluminum oxide. A coated tool material characterized in that the side thereof is made of κ-aluminum oxide.
α−酸化アルミニウムとκ−酸化アルミニウムの比率を
κ−Ａｌ＿２Ｏ＿３／α−Ａｌ＿２Ｏ＿３＝０．１〜１
０であることを特徴とする特許請求の範囲第１項に記載
の被覆工具材料。(2) The layer thickness of aluminum oxide is 0.5 to 10 μm,
The ratio of α-aluminum oxide and κ-aluminum oxide is κ-Al_2O_3/α-Al_2O_3=0.1~1
1. The coated tool material according to claim 1, wherein the coated tool material is 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP531788A JP2677288B2 (en) | 1988-01-12 | 1988-01-12 | Coated tool material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP531788A JP2677288B2 (en) | 1988-01-12 | 1988-01-12 | Coated tool material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01180980A true JPH01180980A (en) | 1989-07-18 |
| JP2677288B2 JP2677288B2 (en) | 1997-11-17 |
Family
ID=11607881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP531788A Expired - Fee Related JP2677288B2 (en) | 1988-01-12 | 1988-01-12 | Coated tool material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2677288B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0686707A1 (en) * | 1992-12-22 | 1995-12-13 | Mitsubishi Materials Corporation | Surface coated cutting tool |
| US5587233A (en) * | 1992-03-27 | 1996-12-24 | Widia Gmbh | Composite body and its use |
| JP2004188577A (en) * | 2002-06-28 | 2004-07-08 | Mitsubishi Materials Corp | Cutting tool of surface-coated cermet with hard coating layer having excellent thermal shock resistance |
| USRE41972E1 (en) | 1994-07-20 | 2010-11-30 | Sandvik Intellectual Property Ab | Aluminum oxide coated tool |
-
1988
- 1988-01-12 JP JP531788A patent/JP2677288B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5587233A (en) * | 1992-03-27 | 1996-12-24 | Widia Gmbh | Composite body and its use |
| EP0686707A1 (en) * | 1992-12-22 | 1995-12-13 | Mitsubishi Materials Corporation | Surface coated cutting tool |
| USRE41972E1 (en) | 1994-07-20 | 2010-11-30 | Sandvik Intellectual Property Ab | Aluminum oxide coated tool |
| JP2004188577A (en) * | 2002-06-28 | 2004-07-08 | Mitsubishi Materials Corp | Cutting tool of surface-coated cermet with hard coating layer having excellent thermal shock resistance |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2677288B2 (en) | 1997-11-17 |
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