JPH0726366A - Coated cemented carbide excellent in chipping resistance - Google Patents
Coated cemented carbide excellent in chipping resistanceInfo
- Publication number
- JPH0726366A JPH0726366A JP19410693A JP19410693A JPH0726366A JP H0726366 A JPH0726366 A JP H0726366A JP 19410693 A JP19410693 A JP 19410693A JP 19410693 A JP19410693 A JP 19410693A JP H0726366 A JPH0726366 A JP H0726366A
- Authority
- JP
- Japan
- Prior art keywords
- cemented carbide
- coating layer
- fracture resistance
- coated cemented
- thickness
- 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.)
- Pending
Links
- 239000011247 coating layer Substances 0.000 claims abstract description 21
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- 238000000576 coating method Methods 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims abstract description 6
- 238000005240 physical vapour deposition Methods 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000011195 cermet Substances 0.000 claims description 4
- 238000005229 chemical vapour deposition Methods 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 150000001247 metal acetylides Chemical class 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 229910052758 niobium Inorganic materials 0.000 claims description 2
- 150000004767 nitrides Chemical class 0.000 claims description 2
- 229910052715 tantalum Inorganic materials 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 238000005520 cutting process Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000005480 shot peening Methods 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- VWVRASTUFJRTHW-UHFFFAOYSA-N 2-[3-(azetidin-3-yloxy)-4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]pyrazol-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound O=C(CN1C=C(C(OC2CNC2)=N1)C1=CN=C(NC2CC3=C(C2)C=CC=C3)N=C1)N1CCC2=C(C1)N=NN2 VWVRASTUFJRTHW-UHFFFAOYSA-N 0.000 description 1
- SXAMGRAIZSSWIH-UHFFFAOYSA-N 2-[3-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,2,4-oxadiazol-5-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NOC(=N1)CC(=O)N1CC2=C(CC1)NN=N2 SXAMGRAIZSSWIH-UHFFFAOYSA-N 0.000 description 1
- LPZOCVVDSHQFST-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-3-ethylpyrazol-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C=1C(=NN(C=1)CC(=O)N1CC2=C(CC1)NN=N2)CC LPZOCVVDSHQFST-UHFFFAOYSA-N 0.000 description 1
- WZFUQSJFWNHZHM-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC(=O)N1CC2=C(CC1)NN=N2 WZFUQSJFWNHZHM-UHFFFAOYSA-N 0.000 description 1
- JVKRKMWZYMKVTQ-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]pyrazol-1-yl]-N-(2-oxo-3H-1,3-benzoxazol-6-yl)acetamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C=1C=NN(C=1)CC(=O)NC1=CC2=C(NC(O2)=O)C=C1 JVKRKMWZYMKVTQ-UHFFFAOYSA-N 0.000 description 1
- YJLUBHOZZTYQIP-UHFFFAOYSA-N 2-[5-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NN=C(O1)CC(=O)N1CC2=C(CC1)NN=N2 YJLUBHOZZTYQIP-UHFFFAOYSA-N 0.000 description 1
- CONKBQPVFMXDOV-QHCPKHFHSA-N 6-[(5S)-5-[[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]methyl]-2-oxo-1,3-oxazolidin-3-yl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C[C@H]1CN(C(O1)=O)C1=CC2=C(NC(O2)=O)C=C1 CONKBQPVFMXDOV-QHCPKHFHSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 101100368700 Caenorhabditis elegans tac-1 gene Proteins 0.000 description 1
- 229910010067 TiC2 Inorganic materials 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 102200082816 rs34868397 Human genes 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Landscapes
- Chemical Vapour Deposition (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Physical Vapour Deposition (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は切削工具、耐摩耗工具、
耐衝撃工具等に用いる衝撃荷重がかかる被覆超硬合金工
具に関する。BACKGROUND OF THE INVENTION The present invention relates to a cutting tool, an abrasion resistant tool,
The present invention relates to a coated cemented carbide tool which is used as an impact resistant tool and to which an impact load is applied.
【０００２】[0002]
【従来の技術】一般に超硬合金等の硬質焼結合金に硬質
被覆を化学蒸着法（ＣＶＤ法）でセラミック皮膜を被覆
した被覆超硬合金は、耐摩耗性にには優れるものの衝撃
荷重が加わった場合には欠損しやすいという欠点があ
る。その理由はＣＶＤ膜に５０〜１５０ｋｇ／ｍｍ2 も
引張応力が発生している為である。この問題を回避する
ために例えば特開平３−９２２０４、特開平３−１５３
８７５、特開平４−８４０９に見られるように、被覆超
硬合金の被覆膜に意図的に微細クラックを導入して残留
応力を開放してから実用に供する事が知られている。ま
た微細クラックを導入する手段として特開平２−２５４
１４４などに記載されているショットピーニングによる
方法がある。またその基体は超硬のみならずサーメット
などにも有効である。（特開平３−９２２０５）2. Description of the Related Art Generally, a coated cemented carbide obtained by coating a hard coating on a hard sintered alloy such as cemented carbide with a ceramic coating by a chemical vapor deposition method (CVD method) has excellent wear resistance, but is subjected to an impact load. However, there is a drawback that it is easy to lose. The reason is that tensile stress is generated even in the CVD film by 50 to 150 kg / mm 2 . In order to avoid this problem, for example, JP-A-3-92204 and JP-A-3-153
875 and Japanese Patent Application Laid-Open No. 4-84009, it is known to intentionally introduce fine cracks into a coating film of a coated cemented carbide to release residual stress and put it into practical use. Further, as means for introducing fine cracks, JP-A-2-254
There is a method by shot peening described in 144 etc. Further, the substrate is effective not only for cemented carbide but also for cermet and the like. (JP-A-3-92205)
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、これら
の微細クラックを導入して残留応力を減少／開放させる
方法は、この点では有効であるものの、クラックが工具
の最表面に露出しているために実際に切削工具として実
用に供した場合には、その部分に切削の荷重が集中し耐
衝撃性が不安定になるという欠点がある。However, the method of introducing these fine cracks to reduce / release the residual stress is effective in this respect, but the cracks are exposed on the outermost surface of the tool. When it is actually put to practical use as a cutting tool, there is a drawback that the load of cutting is concentrated on that portion and the impact resistance becomes unstable.
【０００４】[0004]
【課題を解決するための手段】そのため、本発明者らは
微細クラックの上方先端部を工具の最表面に存在させな
くすることで耐衝撃抵抗を飛躍的に向上させ得ることを
見いだした。Therefore, the inventors of the present invention have found that the impact resistance can be dramatically improved by eliminating the upper tip of the fine crack from existing on the outermost surface of the tool.
【０００５】[0005]
【作用】またその手段として、例えば微細クラックを導
入した皮膜の上にさらに物理蒸着法で０．５ミクロン以
上の膜を形成し、微細クラックの先端を皮膜内部に納め
ることが有効である。この場合最外層の厚みは０．５ミ
クロン以上５ミクロン以下が望ましく、０．５ミクロン
未満ではその効果は少なく、５ミクロンを超える場合は
その効果が飽和するのでそれ以下とした。In addition, as a means for this, it is effective to form a film of 0.5 μm or more by a physical vapor deposition method on the film in which fine cracks are introduced, and place the tips of the fine cracks inside the film. In this case, it is desirable that the thickness of the outermost layer is 0.5 micron or more and 5 micron or less. If it is less than 0.5 micron, its effect is small, and if it exceeds 5 micron, the effect is saturated.
【０００６】さらに、最外被覆層をＰＶＤ法で形成した
場合には、ＰＶＤ膜は通常圧縮応力が残留するため耐衝
撃性の向上が計られさらに望ましい。Further, when the outermost coating layer is formed by the PVD method, since the PVD film usually has residual compressive stress, the impact resistance is improved, which is more desirable.
【０００７】次に、下部被覆層については、基体と皮膜
との充分な密着性を得るために成膜温度が約１０００℃
とＰＶＤ法に比較して高いＣＶＤ法による皮膜が望まし
い。しかし、ＣＶＤ皮膜は引張応力が残留するため膜厚
は２〜１５ミクロンが望ましく、その範囲を超えると膜
の剥離が生ずるため望ましくない。またその範囲未満で
は耐摩耗性が不十分となり本発明の目的に反する。Next, regarding the lower coating layer, the film forming temperature is about 1000 ° C. in order to obtain sufficient adhesion between the substrate and the film.
It is desirable to use a film formed by a CVD method that is higher than the PVD method. However, the tensile stress of the CVD film remains, so that the film thickness is preferably 2 to 15 μm, and if it exceeds the range, the film peels off, which is not desirable. On the other hand, if it is less than that range, the abrasion resistance becomes insufficient, which is contrary to the object of the present invention.
【０００８】また、下部被覆層の残留応力を除去するた
めに、微細クラックを導入することは本発明にも必須で
ある。この場合のクラックは Ａ） 基体表面にほぼ垂直に存在させ、かつその平均長
さは下部被覆層厚み以上（下部被覆層＋５ミクロン）以
下が良い。その範囲未満では充分に残留応力が除去され
ないため効果が発揮できず、またその範囲を超えると応
力集中が激しくかえって耐衝撃性の不安定さを増す。ク
ラックの長軸方向が基体の表面にほぼ垂直であることが
望ましいのは、平行になるに従い膜の微細チッピングが
頻繁となるためである。It is also essential to the present invention to introduce fine cracks in order to remove the residual stress in the lower coating layer. The cracks in this case are: A) Almost perpendicular to the surface of the substrate, and the average length is preferably not less than the thickness of the lower coating layer (lower coating layer + 5 μm) or less. If it is less than the range, the residual stress is not sufficiently removed so that the effect cannot be exerted, and if it exceeds the range, the stress concentration becomes severe and the impact resistance becomes unstable. It is desirable that the major axis direction of the crack be substantially perpendicular to the surface of the substrate because the fine chipping of the film becomes more frequent as the cracks become parallel.
【０００９】Ｂ） クラック幅の平均値は５ミクロン以
下が良く、その範囲を超えると応力集中が増大し耐衝撃
性が劣化する。 Ｃ）クラック間隔の平均値は１０ミクロン以上２００ミ
クロン以下が良く、その範囲未満では耐摩耗性が劣化
し、またその範囲を超えると残留応力の除去が充分でな
くいずれも本発明の目的に反する。Ａ〜Ｃの形態を有す
る微細クラックの導入手段はショットピーニングが最も
簡便でありかつ実用的であるがショットブラスト等の機
械的な衝撃による方法や、物理的な手段でも効果は期待
できる。B) The average value of the crack width is preferably 5 microns or less, and if it exceeds the range, stress concentration increases and impact resistance deteriorates. C) It is preferable that the average value of the crack interval is 10 microns or more and 200 microns or less, and if it is less than that range, the wear resistance deteriorates, and if it exceeds the range, removal of residual stress is not sufficient and any of them is against the object of the present invention. . Shot peening is the simplest and practical method for introducing fine cracks having the forms A to C, but the effect can be expected by a method using mechanical impact such as shot blasting or a physical method.
【００１０】本発明の被覆膜は現在一般に流布しかつ最
も使用頻度の高いセラミック膜での効果が大きく、また
それが本発明の目的でもある。すなわち該セラミック膜
は、Ｔｉ、Ｚｒ、Ｈｆ、Ｎｂ、Ｔａ、Ｃｒ、Ｍｏ、Ｗ、
Ａｌの炭化物、窒化物、炭窒化物及び酸化物より選ばれ
た１種または２種以上の層から構成された膜である。ま
た、本発明の基体は超硬のみならずＴｉＣＮ基サーメッ
ト合金においてもその効果は大きく、本発明の目的とす
るところである。以下、実施例に基づいて詳細に説明す
る。The coating film of the present invention has a great effect on the ceramic film which is currently generally used and is used most frequently, and it is also an object of the present invention. That is, the ceramic film is made of Ti, Zr, Hf, Nb, Ta, Cr, Mo, W,
It is a film composed of one or more layers selected from Al carbides, nitrides, carbonitrides and oxides. Further, the substrate of the present invention has a great effect not only on cemented carbide but also on a TiCN-based cermet alloy, which is the object of the present invention. Hereinafter, a detailed description will be given based on examples.
【００１１】[0011]
【実施例】ＷＣ９０％、ＴｉＣ２％、ＴａＣ１％、Ｃｏ
７％を成分とする超硬合金１および、ＴｉＣＮ５０％、
ＷＣ２０％、ＴａＣ１８％、Ｃｏ６％、Ｎｉ６％を成分
とするＴｉＣＮ基サーメット合金２に下部被覆層として
ＣＶＤ法でＴｉＮ、ＴｉＣＮ、ＴｉＣ、Ａｌ2Ｏ3を下部
より表面に向かってこの順序にそれぞれ１、５、３、２
ミクロン被覆し、さらにショットピーニング処理を施し
て平均長さ１３ミクロン、平均クラック幅２ミクロン、
平均クラック間隔７０ミクロンの微細クラックを導入し
た。Example: WC90%, TiC2%, TaC1%, Co
Cemented Carbide 1 containing 7% and TiCN 50%,
A TiCN-based cermet alloy 2 containing 20% WC, 18% TaC, 6% Co, and 6% Ni was used as a lower coating layer, and TiN, TiCN, TiC, and Al 2 O 3 were deposited in this order from the bottom toward the surface in this order by 1 5, 3, 2
Micron coating, shot peening treatment, average length 13 microns, average crack width 2 microns,
Fine cracks with an average crack spacing of 70 microns were introduced.
【００１２】さらに、一部のチップはＰＶＤ法でＴｉＮ
膜をさらに被覆し、断続切削性能を比較した。断続切削
性能は以下の条件で比較した。 被削材 Ｓ４５Ｃ（４ッ溝入り） 切削条件 切削速度 １５０ｍ／ｍｉｎ 送り ０．４ｍｍ／ｒｅｖ 切り込み ２ｍｍ 工具形状 ＳＮＭＡ１２０４０８ 判定基準 欠損が生ずるまでの断続衝撃回数 その結果を表１、表２に示す。Further, some chips are made of TiN by the PVD method.
The film was further coated and the interrupted cutting performance was compared. The intermittent cutting performance was compared under the following conditions. Work material S45C (with 4 grooves) Cutting condition Cutting speed 150 m / min Feed 0.4 mm / rev Cutting depth 2 mm Tool shape SNMA120408 Judgment criteria Number of intermittent impacts until failure occurs The results are shown in Tables 1 and 2.
【００１３】[0013]
【表１】 試料番号 基体 ＰＶＤ層厚み（ミクロン） 衝撃回数（×１０００） 比較例 １ １ ０ １．５ 比較例 ２ １ ０．２ １．７ 比較例 ３ １ ０．４ １．８ 本発明例 ４ １ ０．５ ５．３ 本発明例 ５ １ ２．０ ７．３ 本発明例 ６ １ ５．０ １０．８ 比較例 ７ １ ６．５ ８．８Table 1 Sample No. Substrate PVD layer thickness (micron) Impact frequency (× 1000) Comparative example 1 1 0 1.5 Comparative example 2 1 0.2 1.7 Comparative example 3 1 0.4 1.8 Inventive example 4 1 0.5 5.3 Inventive Example 5 1 2.0 7.3 Inventive Example 6 1 5.0 10.8 Comparative Example 7 1 6.5 8.8
【００１４】[0014]
【表２】 試料番号 基体 ＰＶＤ層厚み（ミクロン） 衝撃回数（×１０００） 比較例 ８ ２ ０ ０．７ 比較例 ９ ２ ０．２ ０．９ 比較例 １０ ２ ０．４ １．０ 本発明例 １１ ２ ０．５ ３．３ 本発明例 １２ ２ ２．０ ６．１ 本発明例 １３ ２ ５．０ ７．４ 比較例 １４ ２ ６．５ ４．１Table 2 Sample No. Substrate PVD layer thickness (micron) Impact count (× 1000) Comparative example 8 2 0 0.7 Comparative example 9 2 0.2 0.9 Comparative example 10 2 0.4 1.0 Inventive example 11 2 0.5 3.3 Inventive Example 12 2 2.0 6.1 Inventive Example 13 2 5.0 7.4 Comparative Example 14 2 6.5 5.1
【００１５】表１、表２より本発明は、被削材に溝を入
れ機械的な衝撃が加わる条件における衝撃回数において
優れた性能を示すとともに、もたその時の回数も安定し
ており寿命バラツキも少ない。From Tables 1 and 2, the present invention shows excellent performance in the number of impacts under the condition that a groove is cut on a work material and a mechanical impact is applied, and the number of impacts at that time is also stable, resulting in variation in life. Also few.
【００１５】[0015]
【発明の効果】本発明は、従来の被覆超硬合金の欠点で
ある耐衝撃性を改善し、またその寿命を安定させたもの
で産業上の利用効果は極めて大きい。INDUSTRIAL APPLICABILITY The present invention improves impact resistance, which is a drawback of the conventional coated cemented carbide, and stabilizes its life, and has an extremely great industrial application effect.
───────────────────────────────────────────────────── 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 Ｃ２２Ｃ 29/00 Ａ Ｚ Ｃ２３Ｃ 16/30 16/56 28/00 Ａ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical indication C22C 29/00 AZ C23C 16/30 16/56 28/00 A
Claims (6)
０ミクロン以下の被覆を有する超硬合金において、該被
覆層が以下の特徴を持つ耐欠損性に優れる被覆超硬合
金。 １）最外被覆層 Ａ〜Ｃに示すクラックが存在しない。 ２）下部被覆層 Ａ〜Ｃに示すクラックが存在する。 Ａ）クラック長さの平均距離 被覆表面に垂直に下部被
覆層厚み以上、下部被覆層厚み＋５ミクロン以下 Ｂ）クラック幅の平均値 ５ミクロン以下 Ｃ）クラック間隔の平均値 １０ミクロン以上、２０
０ミクロン以下1. A surface of cemented carbide having a thickness of 5 μm or more 2
In a cemented carbide having a coating of 0 micron or less, the coating layer has the following characteristics and is excellent in fracture resistance. 1) Outermost coating layer There are no cracks shown in A to C. 2) Lower coating layer There are cracks shown in A to C. A) Average distance of crack lengths Lower coating layer thickness or more and lower coating layer thickness +5 microns or less perpendicular to the coating surface B) Average crack width value 5 microns or less C) Average crack spacing value 10 microns or more, 20
0 micron or less
超硬合金において、最外被覆層が物理蒸着法による被覆
層であり、下部被覆層が化学蒸着法による被覆層である
ことを特徴とする耐欠損性に優れる被覆超硬合金。2. The coated cemented carbide excellent in fracture resistance according to claim 1, wherein the outermost coating layer is a coating layer formed by physical vapor deposition and the lower coating layer is a coating layer formed by chemical vapor deposition. A coated cemented carbide with excellent fracture resistance.
れる被覆超硬合金において、最外被覆層の厚みが０．５
〜５ミクロン、下部被覆層の厚みが２〜１５ミクロンで
あることを特徴とする耐欠損性に優れる被覆超硬合金。3. The coated cemented carbide excellent in fracture resistance according to claim 1, wherein the outermost coating layer has a thickness of 0.5.
A coated cemented carbide with excellent fracture resistance, characterized in that the lower coating layer has a thickness of -5 μm and a thickness of 2-15 μm.
れる被覆超硬合金において、被覆層がＴｉ、Ｚｒ、Ｈ
ｆ、Ｎｂ、Ｔａ、Ｃｒ、Ｍｏ、Ｗ、Ａｌの炭化物、窒化
物、炭窒化物及び酸化物より選ばれた１種または２種以
上の層からなることを特徴とする耐欠損性に優れる被覆
超硬合金。4. The coated cemented carbide having excellent fracture resistance according to claim 1, wherein the coating layer is Ti, Zr, or H.
A coating excellent in fracture resistance, characterized by comprising one or more layers selected from carbides, nitrides, carbonitrides and oxides of f, Nb, Ta, Cr, Mo, W and Al. Cemented carbide.
超硬合金において、Ａ〜Ｃで特徴付けされたクラック微
細クラックが下部被覆層を被覆した後に機械的な衝撃に
より導入されたことを特徴とする耐欠損性に優れる被覆
超硬合金。5. The coated cemented carbide excellent in fracture resistance according to claim 1, wherein the crack micro-cracks characterized by AC are introduced by mechanical impact after coating the lower coating layer. A coated cemented carbide with excellent fracture resistance.
れる被覆超硬合金において、基体がＴｉＣＮ基サーメッ
ト合金であることを特徴とする耐欠損性に優れる被覆超
硬合金。6. The coated cemented carbide having excellent fracture resistance according to claim 1, wherein the substrate is a TiCN-based cermet alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19410693A JPH0726366A (en) | 1993-07-10 | 1993-07-10 | Coated cemented carbide excellent in chipping resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19410693A JPH0726366A (en) | 1993-07-10 | 1993-07-10 | Coated cemented carbide excellent in chipping resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0726366A true JPH0726366A (en) | 1995-01-27 |
Family
ID=16319037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19410693A Pending JPH0726366A (en) | 1993-07-10 | 1993-07-10 | Coated cemented carbide excellent in chipping resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0726366A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015009322A (en) * | 2013-06-28 | 2015-01-19 | 三菱マテリアル株式会社 | Surface coated cutting tool |
| JP2015188995A (en) * | 2014-03-28 | 2015-11-02 | 三菱マテリアル株式会社 | Surface coated cutting tool with excellent abnormal damage resistance |
| JP5962862B2 (en) * | 2013-08-21 | 2016-08-03 | 株式会社タンガロイ | Coated cutting tool |
-
1993
- 1993-07-10 JP JP19410693A patent/JPH0726366A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015009322A (en) * | 2013-06-28 | 2015-01-19 | 三菱マテリアル株式会社 | Surface coated cutting tool |
| JP5962862B2 (en) * | 2013-08-21 | 2016-08-03 | 株式会社タンガロイ | Coated cutting tool |
| JP2015188995A (en) * | 2014-03-28 | 2015-11-02 | 三菱マテリアル株式会社 | Surface coated cutting tool with excellent abnormal damage resistance |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4185172B2 (en) | Coated hard tool | |
| JP3452726B2 (en) | Multi-layer coated hard tool | |
| JP2007001007A (en) | Composite coating film for finishing hardened steel | |
| JP2000334606A (en) | Hard film coated tool | |
| KR20050010474A (en) | Oxide coated cutting tool | |
| EP0549584A1 (en) | Cvd and pvd coated cutting tools | |
| JPH09300106A (en) | Throw-away insert of surface coated super-hard alloy | |
| JP3658948B2 (en) | Coated cemented carbide | |
| KR20130019378A (en) | Surface-coated cutting tool | |
| KR20100034013A (en) | Tool with multilayered metal oxide coating and method for producing the coated tool | |
| EP0236961B1 (en) | Surface-coated cutting member | |
| KR102600870B1 (en) | Cutting tool having hard coating layer with ecellent wear resistance and toughness | |
| JPH0726366A (en) | Coated cemented carbide excellent in chipping resistance | |
| JPH05177411A (en) | Coated cutting tool and manufacturing method thereof | |
| JP4351521B2 (en) | Surface coated cutting tool | |
| JP3424263B2 (en) | Coated hard alloy members | |
| JP3638332B2 (en) | Coated hard alloy | |
| JP3360339B2 (en) | Coated cutting tool | |
| JP4105795B2 (en) | Hard film and hard film coated member with excellent wear resistance and crack resistance | |
| JP3643639B2 (en) | Cemented carbide structure, manufacturing method thereof and cutting tool using the same | |
| JP2677288B2 (en) | Coated tool material | |
| JPH03180464A (en) | Surface coated hard member excellent in wear resistance | |
| JP3572722B2 (en) | Coated hard alloy tool | |
| JPH01252305A (en) | Surface coated hard alloy cutting tip with tungsten carbide base | |
| JP2987963B2 (en) | Boron nitride coated hard material |