JPH0271906A - Surface coated tungsten carbide base sintered hard alloy made cutting tool excellent in plastic deformation resistance - Google Patents
Surface coated tungsten carbide base sintered hard alloy made cutting tool excellent in plastic deformation resistanceInfo
- Publication number
- JPH0271906A JPH0271906A JP22329988A JP22329988A JPH0271906A JP H0271906 A JPH0271906 A JP H0271906A JP 22329988 A JP22329988 A JP 22329988A JP 22329988 A JP22329988 A JP 22329988A JP H0271906 A JPH0271906 A JP H0271906A
- Authority
- JP
- Japan
- Prior art keywords
- cutting tool
- tungsten carbide
- cutting
- carbide
- plastic deformation
- 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
- 238000005520 cutting process Methods 0.000 title claims abstract description 55
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 title claims description 10
- 239000000956 alloy Substances 0.000 title abstract description 4
- 229910045601 alloy Inorganic materials 0.000 title abstract description 4
- 150000004767 nitrides Chemical class 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims description 22
- 150000001247 metal acetylides Chemical class 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 7
- 229910052758 niobium Inorganic materials 0.000 claims description 6
- 229910052715 tantalum Inorganic materials 0.000 claims description 6
- -1 carbonitrides Chemical class 0.000 claims description 5
- 239000002356 single layer Substances 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- 229910052721 tungsten Inorganic materials 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 239000006104 solid solution Substances 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims 1
- 239000002131 composite material Substances 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 238000003801 milling Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical class [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Physical Vapour Deposition (AREA)
- Chemical Vapour Deposition (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、すぐれた耐塑性変形性を有し、特に高速切
削や、高送り切削および高切込み切削などの苛酷な条件
下での断続切削やフライス切削などに用いた場合に、す
ぐれた切削性能を発揮する表面被覆炭化タングステン（
以下ＷＣで示す）基超硬合金製切削工具に関するもので
ある。[Detailed Description of the Invention] [Industrial Application Field] The present invention has excellent plastic deformation resistance, and is suitable for interrupted cutting under severe conditions such as high-speed cutting, high-feed cutting, and high-depth cutting. Surface-coated tungsten carbide that exhibits excellent cutting performance when used for cutting and milling.
The present invention relates to a cutting tool made of cemented carbide (hereinafter referred to as WC).
一般に、鋼や鋳鉄などの断続切削やフライス切削などに
、
結合用形成成分としてのＧｏ、Ｎｉ、およびＦｅ （
以下鉄属金属という）のうちの１種以上：１０〜２５％
、
を含有し、さらに必要に応じて、
分散相形成成分としてＴｉ 、Ｔａ、Ｎｂ、およびＷの
炭化物、窒化物、および炭窒化物、並びにこれらの２種
以上の固溶体（ただしＷの炭化物、窒化物、および炭窒
化物を除く、以下これら全体を（Ｔｉ 、Ｔａ、Ｎｂ、
Ｗ）Ｃ−Ｎで示す）のうちの１種以上：４〜２５重量％
、
を含Ｈし、残りが分散相形成成分としてのＷＣと不可避
不純物からなる組成（以上ｆｆ１ｆｆｉ％、以下％は重
量％を示す）を有するＷＣＣ超超硬合金基体表面に、化
学蒸着法や物理蒸着法を用いて、Ｔｉの炭化物、窒化物
、炭窒化物、炭酸化物、および炭窒酸化物、並びに酸化
アルミニウム（以下、それぞれＴｔＣ，ＴｉＮ、Ｔ１Ｃ
Ｎ。In general, Go, Ni, and Fe (
One or more of the following: 10 to 25%
, and if necessary, carbides, nitrides, and carbonitrides of Ti, Ta, Nb, and W as dispersed phase-forming components, and solid solutions of two or more of these (however, carbides, nitrides of W, (Ti, Ta, Nb,
W) One or more of the following: 4 to 25% by weight
A chemical vapor deposition method or a physical Using a vapor deposition method, Ti carbides, nitrides, carbonitrides, carbonates, and carbonitrides of Ti, and aluminum oxides (hereinafter, TtC, TiN, and T1C, respectively) are produced.
N.
ＴｉＣ０，ＴｉＣＮ０およびＡｇ２ｏ３で示し、Ａｇ２
Ｏ３を除く全体を、ＴｆＣ−Ｎ・０で示す）のうちの１
種の単層または２種以上の複層からなる硬質層を２〜６
μｍの下均層厚で被覆してなる表面波５１ｗｃ基超硬合
金製切削工具、
が広く用いられている。Indicated by TiC0, TiCN0 and Ag2o3, Ag2
The whole excluding O3 is shown as TfC-N・0).
2 to 6 hard layers consisting of a single layer of seeds or a multilayer of two or more types
Surface wave 51wc-based cemented carbide cutting tools coated with a lower average layer thickness of μm are widely used.
しかし、近年の切削工程の省力化および高速化に対する
要求は厳しく、これに伴って高速切削や、高送り切削お
よび高切込み切削などの重切削を余儀無くされる傾向に
あるが、上記の従来表面被覆ＷＣＣ基超硬合金製切削工
具用いて断続切削やフライス切削を高速切削や重切削な
どの笥酷な条件で行なった場合、著しい発熱と衝撃によ
って基体が塑性変形し、この基体の塑性変形によって硬
質層にクラックが発生し易くなり、これが原因で切刃に
欠損やチッピングが発生するようになるばかりでなく、
場合によっては硬質層に剥離が生じるようになり、この
結果切刃の摩耗が皆しく促進することになることから、
きわめて短かい使用寿命しか示さないのが現状である。However, in recent years there has been a severe demand for labor saving and speeding up of cutting processes, and as a result, heavy cutting such as high-speed cutting, high-feed cutting, and high-depth cutting has become necessary. When a WCC-based cemented carbide cutting tool is used to perform interrupted cutting or milling under harsh conditions such as high-speed cutting or heavy cutting, the base material undergoes plastic deformation due to significant heat generation and impact, and this plastic deformation causes the base material to become hard. Cracks are more likely to occur in the layer, which not only causes chipping and chipping of the cutting edge, but also
In some cases, peeling may occur in the hard layer, which will accelerate the wear of the cutting edge.
Currently, they only have an extremely short service life.
そこで、本発明者等は、上述のような観点から、上記の
従来表面被覆ＷＣＣ基超硬合金製切削工具石目し、これ
にすぐれた耐塑性変形性を付与すべく研究を行なった結
果、上記の従来表面被覆ＷＣＣ基超硬合金製切削工具お
ける基体に、Ｔｉの炭化物、窒化物、および炭窒化物（
以下それぞれ、ＴｉＣ，ＴｉＮ、およびＴ１ＣＮで示し
、これら全体をＴｉＣ−Ｎで示す）のうちのＩＦＩｉま
たは２種以上からなるボイス力を、基体全体に占める割
合で５〜４０％含有させると、すぐれた耐塑性変形性を
もつようになり、この結果の表面被覆ＷＣＣ基超硬合金
製切削工具、これを断続切削やフライス切削に、高速切
削や重切削などの４酷な条件で使用しても、硬質層に欠
損やチッピング、さらに剥離の発生が皆無となり、すぐ
れた切削性能を長期に互って発揮するようになるという
知見を得たのである。Therefore, from the above-mentioned viewpoint, the present inventors conducted research to improve the texture of the conventional surface-coated WCC-based cemented carbide cutting tool and impart excellent plastic deformation resistance to it. In the conventional surface-coated WCC-based cemented carbide cutting tool mentioned above, Ti carbide, nitride, and carbonitride (
If IFIi or two or more of the following are expressed as TiC, TiN, and T1CN, and all of these are expressed as TiC-N, in an amount of 5 to 40% of the entire base, excellent The resulting surface-coated WCC-based cemented carbide cutting tool can be used in interrupted cutting, milling, high-speed cutting, heavy cutting, and other harsh conditions. They discovered that the hard layer is completely free from chipping, chipping, and peeling, and exhibits excellent cutting performance over a long period of time.
この発明は、上記知見にもとづいてなされたものであっ
て・
結合相形成成分として鉄族金属のうちの１ ［４または
２種以上：５〜２０％、
を含有し、さらに必要に応じて、
分散相形成成分として（Ｔｉ 、Ｔａ 、Ｎｂ 、Ｗ）
Ｃ−Ｎのうちの１種または２種以上二〇、５〜３０％、
を自白°し、残りが分散相形成成分としてのＷＣと不可
避不純物からなる組成を有するＷＣＣ超超硬合金基体表
面に、
ＴｉＣ−Ｎ・０およびＡｇ２Ｏ３のうちの１種の単層ま
たは２種以上の複層からなる硬質層を０．５〜２０μｍ
の平均層厚で被覆してなる表面被覆ＷＣＣ基超硬合金製
切削工具おいて、上記ｗｃｉ超硬合金基体に、分散相形
成成分としてＴｉＣ−Ｎのうちの１種または２種以上か
らなるボイス力を、基体全体に占める割合で５〜４０９
６含有させることによって耐塑性変形性を向上せしめた
表面波１ｗｃ基超硬合金製切削工具に特徴を有するもの
である。This invention was made based on the above findings, and contains one [4 or more of iron group metals: 5 to 20%] as a binder phase forming component, and further contains, if necessary, As dispersed phase forming components (Ti, Ta, Nb, W)
20, 5 to 30% of one or two or more of C-N;
A single layer of one type or two or more types of TiC-N.0 and Ag2O3 is applied to the surface of a WCC cemented carbide substrate having a composition in which the remainder consists of WC as a dispersed phase forming component and unavoidable impurities. A hard layer consisting of multiple layers of 0.5 to 20 μm
In the surface-coated WCC-based cemented carbide cutting tool formed by coating with an average layer thickness of The force is 5 to 409 as a proportion of the entire base.
A cutting tool made of surface wave 1wc-based cemented carbide is characterized by improved plastic deformation resistance by containing 6.
つぎに、この発明の切削工具において、ＷＣＣ超超硬合
金基体成分組成および硬質層の平均層厚を上記の通りに
限定した理由を説明する。Next, in the cutting tool of the present invention, the reason why the composition of the WCC cemented carbide base material and the average layer thickness of the hard layer are limited as described above will be explained.
＾、ＷＣ基超硬基金硬合金基体組成
（ａ）鉄族金属
これらの成分には、分散相と強固に結合し、強度および
靭性を向上させる作用があるが、その含有量が５％未満
では前記作用に所望の効果が得られず、一方その含有量
が２０％を越えると硬さ低ドが著しく、耐摩耗性が低下
するようになることから、その含有量を５〜２０％と定
めた。^, WC-based cemented carbide base alloy base composition (a) Iron group metals These components have the effect of strongly bonding with the dispersed phase and improving strength and toughness, but if their content is less than 5%, The desired effect cannot be obtained in the above action, and on the other hand, if the content exceeds 20%, the hardness will be significantly lower and the wear resistance will decrease, so the content is set at 5 to 20%. Ta.
（ｂ） （Ｔｉ 、Ｔａ、Ｎｂ、Ｗ）Ｃ−Ｎこれらの
成分には、合金の硬さを高めて、耐摩耗性を向上させる
作用があるので、必要に応じて金白゛されるが、その含
有量が０ 、５９６未満では所望の耐摩耗性向」二効果
が得られず、一方その含有量が３０９６を越えると靭性
が低下し、耐欠損性が損なわれるようになることから、
その含有量を０．５〜３０％と定めた。(b) (Ti, Ta, Nb, W)C-N These components have the effect of increasing the hardness of the alloy and improving its wear resistance, so they may be gold-plated if necessary. If the content is less than 0.596, the desired wear resistance effect cannot be obtained, while if the content exceeds 3096, the toughness will decrease and the fracture resistance will be impaired.
Its content was determined to be 0.5 to 30%.
（ｃ） ＴｉＣ−Ｎホイスカ
これらの成分には、上記の通り耐塑性変形性を飛躍的に
向上させる作用かあるが、その含有量が５％未満では前
記作用に所望の効果を確保することができず、一方その
含有量が４０％を越えると素地中に均一に分散分布させ
ることが困難になり、局部的材質ムラが生ずるようにな
ることから、その含有量を５〜４０％と定めた。(c) TiC-N Whisker These components have the effect of dramatically improving plastic deformation resistance as described above, but if their content is less than 5%, the desired effect cannot be ensured. On the other hand, if the content exceeds 40%, it becomes difficult to disperse and distribute it uniformly in the substrate, causing local unevenness in the material, so the content was set at 5 to 40%. .
Ｂ、硬質層の平均層厚
その平均層厚が０．５ｔ１３未満では、硬質層形成に伴
なう所望の耐摩耗性向上効果が得られず、一方その平均
層厚が２０−を越えると、欠損やチッピングが発生し易
くなることから、その平均層厚を０．５〜２０−と定め
た。B. Average layer thickness of the hard layer If the average layer thickness is less than 0.5t13, the desired effect of improving wear resistance due to the formation of the hard layer cannot be obtained; on the other hand, if the average layer thickness exceeds 20- Since defects and chipping are likely to occur, the average layer thickness was set at 0.5 to 20-20.
つぎに、この発明の表面波ＩＷｃ基超硬合金製切削工具
を実施例により具体的に説明する。Next, the surface wave IWc-based cemented carbide cutting tool of the present invention will be specifically explained using examples.
原料粉末として、いずれも１〜５．５１ＥＩＪの範囲内
の平均粒径を有するＷＣ粉末、各種の（Ｔｉ。As raw material powders, WC powders and various types of (Ti.
Ｔａ、Ｎｂ、Ｗ）Ｃ−Ｎ粉末、ＣＯ粉末、Ｎｉ粉末、お
よびＦｅ粉末を用意し、さらに１０〜１００の範囲内の
アスペクト比（長さ／径）を育するＴｉＣホイスカ、Ｔ
ｉＮホイスカ、およびＴ１ＣＮホイスカを用意し、これ
ら原料をそれぞれ第１表に示される配合組成に配合し、
ホイスカを除く原料粉末をボールミルにて７２時時間式
混合し、ついでこれにホイスカを加えて軽く混合し、乾
燥した後、ＬＯｔｏｎ／ｃμｍの圧力で圧粉体にプレス
成形し、この圧粉体に、Ｉ Ｘ １０’ｔｏｒｒの真空
中、温度： １３８０〜１４００℃の条件での真空焼結
、または温度： Ｈ８０〜１４００℃、圧カニ ２０（
１ｋｇ／ｃシの条件でのホットプレスを施し、研磨して
５ＰＰ４３２の形状としたＷＣＣ超超硬合金基体製造し
、引続いてこの基体の表面に、通常の化学蒸着装置を用
い、同じく第１表に示される組成および平均層厚の単層
または複層からなる硬質層を形成することにより本発明
表面技工ＷＣ基超硬合金製スローアウェイチップ（以下
、本発明被覆超硬チップという）１〜［５、およびＷＣ
Ｃ超超硬合金基体ホイスカの含有がない従来表面被覆Ｗ
ＣＣ超超硬合金製スローアウェイチップ以下、従来被覆
超硬チップという）１〜１５をそれぞれ製造した。Ta, Nb, W)C-N powder, CO powder, Ni powder, and Fe powder were prepared, and TiC whiskers and T
Prepare an iN whisker and a T1CN whisker, mix these raw materials into the composition shown in Table 1,
The raw material powder excluding the whiskers was mixed in a ball mill for 72 hours, then the whiskers were added thereto and mixed lightly. After drying, it was press-molded into a green compact at a pressure of LOton/cμm. , vacuum sintering in a vacuum of I x 10'torr, temperature: 1380-1400°C, or temperature: H80-1400°C, pressure crab 20 (
A WCC cemented carbide substrate was produced by hot pressing and polishing at a pressure of 1 kg/c to form a 5PP432 shape. By forming a hard layer consisting of a single layer or multiple layers with the composition and average layer thickness shown in the table, the surface technology WC-based cemented carbide indexable tip of the present invention (hereinafter referred to as the coated carbide tip of the present invention) 1 to [5, and W.C.
C Cemented carbide base Conventional surface coating W that does not contain whiskers
CC cemented carbide indexable chips (hereinafter referred to as conventional coated carbide chips) 1 to 15 were manufactured, respectively.
ついで、この結宋得られた各種の被覆超硬チップについ
て、
被削材・ＳＮＣＭ４３９（硬さＨＢ２７０）の角材、切
削速度： １００ｍ／ｍｉｎ、
送 リ： ０．３ｍｍ／ｒｅｖ、、切込み：４１
１１１％
の条件で鋼の高切込み乾式断続切削試験を行ない、切刃
の逃げ面摩耗幅が０．３ｍｍに至るまでの切削時間を測
定すると共に、試験後の切刃状況を観察した。これらの
結果を第１表に示した。Next, regarding the various coated carbide tips obtained, the work material was a square piece of SNCM439 (hardness HB270), cutting speed: 100 m/min, feed rate: 0.3 mm/rev, depth of cut: 41
A high-cut dry intermittent cutting test was conducted on steel under conditions of 111%, and the cutting time until the flank wear width of the cutting edge reached 0.3 mm was measured, and the condition of the cutting edge was observed after the test. These results are shown in Table 1.
第１表に示される結果から、本発明被覆超硬チップ１〜
１５は、基体かホイスカを含有することによってずくれ
た耐塑性変形性を具備するようになるので、高切込みの
苛酷な条件ドでらすぐれた耐１９耗性を示すのに対して
、従来被覆超硬チップ］〜１５は、発熱および衝撃によ
って基体が塑性変形することから、切刃に欠損やチッピ
ングか発生し、短かい使用寿命しか示さないことが明ら
かである。From the results shown in Table 1, the coated carbide tips of the present invention 1 to
15 has excellent plastic deformation resistance due to the inclusion of whiskers in the base material, so it exhibits excellent wear resistance even under severe conditions with a high depth of cut. It is clear that carbide chips] to No. 15 have only a short service life because the base body undergoes plastic deformation due to heat generation and impact, resulting in chipping or chipping of the cutting edge.
上述のように、この発明の表面彼覆ＷＣ捕超硬り金製切
削工具は、これを構成する基体かすぐれた耐塑性変形性
を有するので、断続切削やフライス切削を、高速切削や
、高送りおよび高切込みなどの重切削条件で行なっても
切刃に欠損やチッピングの発生かなく、すぐれた耐摩耗
性を示し、著しく長期に亘ってすぐれた切削性能を発揮
するのである。As mentioned above, the surface-covered WC superhard metal cutting tool of the present invention has excellent plastic deformation resistance in its base material, so it can be used for interrupted cutting, milling, high-speed cutting, and high-speed cutting. Even when cutting under heavy cutting conditions such as high feed and high depth of cut, the cutting edge does not break or chip, exhibiting excellent wear resistance, and exhibiting excellent cutting performance over an extremely long period of time.
Claims (2)
うちの１種または２種以上：５〜２０重量％、を含有し
、残りが分散相形成成分としての炭化タングステンと不
可避不純物からなる組成を有する炭化タングステン基超
硬合金基体の表面に、Ｔｉの炭化物、窒化物、炭窒化物
、炭酸化物、および炭窒酸化物、並びに酸化アルミニウ
ムのうちの１種の単層または２種以上の複層からなる硬
質層を０．５〜２０μｍの平均層厚で被覆してなる表面
被覆炭化タングステン基超硬合金製切削工具において、 上記炭化タングステン基超硬合金基体に、分散相形成成
分としてＴｉの炭化物、窒化物および炭窒化物のうちの
１種または２種以上からなるホイスカを、基体全体に占
める割合で５〜４０重量％含有せしめたことを特徴とす
る耐塑性変形性のすぐれた表面被覆炭化タングステン基
超硬合金製切削工具。(1) A composition containing 5 to 20% by weight of one or more of Co, Ni, and Fe as binder phase forming components, and the remainder consisting of tungsten carbide as a dispersed phase forming component and unavoidable impurities. A single layer or a composite layer of two or more of Ti carbides, nitrides, carbonitrides, carbonates, and carbonitrides of Ti, and aluminum oxide are formed on the surface of a tungsten carbide-based cemented carbide substrate having a In a surface-coated tungsten carbide-based cemented carbide cutting tool formed by coating a hard layer with an average layer thickness of 0.5 to 20 μm, the tungsten carbide-based cemented carbide substrate is coated with Ti as a dispersed phase forming component. A surface coating with excellent plastic deformation resistance characterized by containing 5 to 40% by weight of whiskers made of one or more of carbides, nitrides, and carbonitrides based on the entire substrate. Tungsten carbide-based cemented carbide cutting tool.
うちの１種または２種以上：５〜２０重量％、を含有し
、さらに、 分散相形成成分としてＴｉ、Ｔａ、Ｎｂ、およびＷの炭
化物、窒化物、および炭窒化物、並びにこれらの２種以
上の固溶体（ただし、Ｗの炭化物、窒化物、および炭窒
化物は除く）のうちの１種または２種以上：０．５〜３
０重量％、 を含有し、残りが分散相形成成分としての炭化タングス
テンと不可避不純物からなる組成を有する炭化タングス
テン基超硬合金基体の表面に、Ｔｉの炭化物、窒化物、
炭窒化物、炭酸化物、および炭窒酸化物、並びに酸化ア
ルミニウムのうちの１種の単層または２種以上の複層か
らなる硬質層を０．５〜２０μｍの平均層厚で被覆して
なる表面被覆炭化タングステン基超硬合金製切削工具に
おいて、 上記炭化タングステン基超硬合金基体に、分散相形成成
分としてＴｉの炭化物、窒化物および炭窒化物のうちの
１種または２種以上からなるホイスカを、基体全体に占
める割合で５〜４０重量％含有せしめたことを特徴とす
る耐塑性変形性のすぐれた表面被覆炭化タングステン基
超硬合金製切削工具。(2) Contains 5 to 20% by weight of one or more of Co, Ni, and Fe as binder phase forming components, and further contains Ti, Ta, Nb, and W as dispersed phase forming components. One or more of carbides, nitrides, carbonitrides, and solid solutions of two or more of these (excluding W carbides, nitrides, and carbonitrides): 0.5 to 3
Ti carbide, nitride,
Coated with a hard layer consisting of a single layer or a multilayer of two or more of carbonitride, carbonate, carbonitoxide, and aluminum oxide with an average layer thickness of 0.5 to 20 μm. In a cutting tool made of a surface-coated tungsten carbide-based cemented carbide, the tungsten carbide-based cemented carbide substrate is provided with a whisker comprising one or more of Ti carbides, nitrides, and carbonitrides as a dispersed phase forming component. A cutting tool made of a surface-coated tungsten carbide-based cemented carbide having excellent plastic deformation resistance, characterized in that the content thereof is 5 to 40% by weight relative to the entire base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22329988A JPH0271906A (en) | 1988-09-06 | 1988-09-06 | Surface coated tungsten carbide base sintered hard alloy made cutting tool excellent in plastic deformation resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22329988A JPH0271906A (en) | 1988-09-06 | 1988-09-06 | Surface coated tungsten carbide base sintered hard alloy made cutting tool excellent in plastic deformation resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0271906A true JPH0271906A (en) | 1990-03-12 |
Family
ID=16795969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22329988A Pending JPH0271906A (en) | 1988-09-06 | 1988-09-06 | Surface coated tungsten carbide base sintered hard alloy made cutting tool excellent in plastic deformation resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0271906A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5216845A (en) * | 1990-10-10 | 1993-06-08 | Gte Valenite Corporation | Method of machining nickel based superalloys |
| US5232318A (en) * | 1990-09-17 | 1993-08-03 | Kennametal Inc. | Coated cutting tools |
| US5279191A (en) * | 1990-10-10 | 1994-01-18 | Gte Valenite Corporation | Reinforced alumina ceramic-metal bodies |
| US5325747A (en) * | 1990-09-17 | 1994-07-05 | Kennametal Inc. | Method of machining using coated cutting tools |
| US5460640A (en) * | 1990-10-10 | 1995-10-24 | Valenite Inc. | Alumina-rare earth oxide ceramic-metal bodies |
| EP0711844A1 (en) * | 1990-08-31 | 1996-05-15 | Valenite Inc. | Ceramic metal articles and methods of manufacture |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3507632A (en) * | 1965-11-22 | 1970-04-21 | Karl Swoboda | Composition of matter comprising hard materials |
-
1988
- 1988-09-06 JP JP22329988A patent/JPH0271906A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3507632A (en) * | 1965-11-22 | 1970-04-21 | Karl Swoboda | Composition of matter comprising hard materials |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0711844A1 (en) * | 1990-08-31 | 1996-05-15 | Valenite Inc. | Ceramic metal articles and methods of manufacture |
| US5232318A (en) * | 1990-09-17 | 1993-08-03 | Kennametal Inc. | Coated cutting tools |
| US5325747A (en) * | 1990-09-17 | 1994-07-05 | Kennametal Inc. | Method of machining using coated cutting tools |
| US5395680A (en) * | 1990-09-17 | 1995-03-07 | Kennametal Inc. | Coated cutting tools |
| US5216845A (en) * | 1990-10-10 | 1993-06-08 | Gte Valenite Corporation | Method of machining nickel based superalloys |
| US5279191A (en) * | 1990-10-10 | 1994-01-18 | Gte Valenite Corporation | Reinforced alumina ceramic-metal bodies |
| US5460640A (en) * | 1990-10-10 | 1995-10-24 | Valenite Inc. | Alumina-rare earth oxide ceramic-metal bodies |
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