JPH0271904A - Tungsten carbide base sintered hard alloy made cutting tool excellent in anti-chipping - Google Patents
Tungsten carbide base sintered hard alloy made cutting tool excellent in anti-chippingInfo
- Publication number
- JPH0271904A JPH0271904A JP22329788A JP22329788A JPH0271904A JP H0271904 A JPH0271904 A JP H0271904A JP 22329788 A JP22329788 A JP 22329788A JP 22329788 A JP22329788 A JP 22329788A JP H0271904 A JPH0271904 A JP H0271904A
- Authority
- JP
- Japan
- Prior art keywords
- tungsten carbide
- carbide
- chipping
- cutting
- cemented carbide
- 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
- 238000005520 cutting process Methods 0.000 title claims abstract description 44
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 7
- 239000000956 alloy Substances 0.000 title claims abstract description 7
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 title claims description 11
- 150000004767 nitrides Chemical class 0.000 claims abstract description 7
- 150000001247 metal acetylides Chemical class 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 229910052758 niobium Inorganic materials 0.000 claims description 6
- 229910052715 tantalum Inorganic materials 0.000 claims description 6
- 229910052721 tungsten Inorganic materials 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000006104 solid solution Substances 0.000 claims description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims 1
- 239000010937 tungsten Substances 0.000 claims 1
- 239000000843 powder Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000003801 milling Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- -1 iron group metals Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000035936 sexual power Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、すぐれた耐欠損性を有し、特に高重切削や
、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炭化タングステン（以下ＷＣで示
す）超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] This invention has excellent fracture resistance, and is suitable for interrupted cutting under severe conditions such as heavy-duty cutting, high-feed cutting, and high-depth cutting. This invention relates to a cutting tool made of tungsten carbide (hereinafter referred to as WC) cemented carbide that exhibits excellent cutting performance when used for cutting, milling, etc.
一般に、鋼や鋳鉄などの断続切削やフライス切削などに
、
結合相形成成分としてＣｏ、Ｎｉ、およびＦｅ（鉄族金
属）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鍾以上：４〜２５％、
を含有し、残りが同じく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（以上重量％、以下％は！ｌ
１１量９６を示す）を有するＷＣＣ超超硬合金構成され
た切削工具、
が用いられている。Generally, for interrupted cutting or milling of steel, cast iron, etc., one or more of Co, Ni, and Fe (iron group metals): 10 to 25% is contained as a binder phase forming component, and if necessary. Accordingly, carbides, nitrides, and carbonitrides of Ti, Ta, Nb, and W, as well as solid solutions of two or more of these (excluding carbides, nitrides, and carbonitrides of W) are used as dispersed phase forming components. , hereinafter all these are (Ti, Ta, Nb,
A composition containing 4 to 25% of at least 4 to 25% of W) C-N), with the remainder consisting of WC as a dispersed phase forming component and unavoidable impurities.
A WCC cemented carbide constructed cutting tool having a weight of 96) is 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、高送りおよび
高切込み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ＷＣＣ超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苛酷な条件
で行なった場合、耐欠損性不足が原因で切刃に欠損やチ
ッピングが発生し、この結果摩耗が促進されるようにな
ることから、比較的短時間で使用寿命に至るのが現状で
ある。However, in recent years there has been a strong demand for labor saving and speeding up of cutting processes, and this has forced heavy cutting such as high speed cutting and high feed and high depth of cut.
When using the conventional WCC cemented carbide cutting tools mentioned above to perform interrupted cutting or milling under severe conditions such as high-speed cutting or heavy cutting, breakage and chipping occur on the cutting edge due to lack of fracture resistance. However, as a result of this, wear is accelerated, and the current situation is that the service life is reached in a relatively short period of time.
そこで、本発明者等は、上述のような観点から、上記の
従来ＷＣＣ超超硬合金製切削工具着目し、これに耐欠損
性を付与すべく研究を行なった結果、上記の従来ＷＣＣ
超超硬合金、Ｔｉの炭化物、窒化物、および炭窒化物（
以下、それぞれＴｉｃ。Therefore, from the above-mentioned viewpoint, the present inventors focused on the conventional WCC cemented carbide cutting tool, and conducted research to impart chipping resistance to the cutting tool.
Cemented carbides, Ti carbides, nitrides, and carbonitrides (
Below, Tic.
ＴｉＮ、およびＴｉＣＮで示し、これら全体をＴｉＣ−
Ｎで示す）のうちの１種末たは２種以上からなるボイス
力を、合金全体に占める割合で５〜４０％含有させると
、すぐれた耐欠損性をもつようになり、したがってこの
結果のＷＣＣ超超硬合金構成された切削工具は、断続切
削やフライス切削を、高速切削や重切削などの苛酷な条
件下で行なっても、切刃に欠損やチッピングの発生がな
くなり、すぐれた耐摩耗性を長期に亘って発揮するとい
う知見を得たのである。TiN and TiCN, and the whole is TiC-
If 5 to 40% of the total alloy contains voice force consisting of one or two or more of the following (denoted as N), it will have excellent fracture resistance. Cutting tools made of WCC cemented carbide have excellent wear resistance, with no breakage or chipping on the cutting edge, even when performing interrupted cutting or milling under severe conditions such as high-speed cutting or heavy cutting. They obtained the knowledge that they exhibit their sexual 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Ｃｏ、Ｎｉ、およびＦｅ（以下鉄
族金属という）のうちの１種または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：０．５〜３０％、
を含有し、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、
同じく分散相形成成分としてＴｉＣ−Ｎのうちの１種ま
たは２種以上からなるホイスカを、合金全体に占める割
合で５〜４０９６含有させてなるＷＣＣ超超硬合金構成
された、すぐれた耐欠損性を有するＷＣＣ超超硬合金製
切削工具特徴を有するものである。This invention was made based on the above findings, and includes one or more of Co, Ni, and Fe (hereinafter referred to as iron group metals) as a binder phase forming component: 5 to 20
%, and if necessary, as dispersed phase forming components (Ti, Ta, Nb, W)
One or more of C-N: 0.5 to 30%,
WCC cemented carbide having a composition with the remainder consisting of WC as a dispersed phase forming component and unavoidable impurities, Whiskers also consisting of one or more of TiC-N as a dispersed phase forming component, The WCC cemented carbide cutting tool is composed of a WCC cemented carbide containing 5 to 4096% of the total alloy, and has excellent fracture resistance.
つぎに、この発明の切削工具において、これを構成する
ＷＣＣ超超硬合金成分組成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 component composition of the WCC cemented carbide constituting the cutting tool is limited as described above will be explained.
（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％を越えると硬さ低下が著しく、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。(a) Iron group metal 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. On the other hand, if the content exceeds 20%, the hardness decreases significantly and wear resistance decreases, so the content was set at 5 to 20%.
（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、必要に応じて含有されるが、その含有
量が０．５％未満では所望の耐摩耗性向上効果が得られ
ず、一方その含有量が３０９６を超人ると靭性が低ドし
、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 are included as necessary, but their If the content is less than 0.5%, the desired effect of improving wear resistance cannot be obtained, while if the content exceeds 3096, the toughness will decrease and the fracture resistance will be impaired. The content was determined to be 0.5 to 30%.
（ｃ） ＴｉＣ−Ｎホイスカ
これらの成分には、上記の通り耐欠損性を飛躍的に向上
させる作用があるが、その含有量が５％未満では所望の
すぐれた耐欠損性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 fracture resistance as described above, but if their content is less than 5%, it is difficult to ensure the desired excellent fracture resistance. 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%. .
つぎに、この発明のＷＣＣ超超硬合金製切削工具実施例
により具体的に説明する。Next, the WCC cemented carbide cutting tool according to an embodiment of the present invention will be specifically explained.
原料粉末として、いずれも１〜５，５節の範囲内の１ろ
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、Ｎｌ粉末、お
よびＦｅ粉末を用意し、さらにｌＯ〜１００の範囲内の
アスペクト比（長さ／′径）を有するＴｉＣホイスカ、
ＴｉＮホイスカ、およびＴｉＣＮボイス力を用意し、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
、ボイス力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、１Ｏｔｏｎ／ｃｊの圧力で圧粉体にプレス
成形し、この圧粉体に、Ｉ Ｘ ＩＯ’ｔｏｒｒの真空
中、温度： １３８０〜１４００℃の条件で真空焼結、
または温度： １３８０−１４００℃、圧カニ２００ｋ
ｇ／ｅ−の条件でのホットプレスを施し、研磨してＳ
Ｐ Ｐ ４２２の形状をもった本発明ＷＣＣ超超硬合金
製スローアウェイチップ以下本発明超硬チップという）
１〜１５、およびホイスカの含有がない従来ＷＣＣ超超
硬合金製スローアウェイチップ以下従来超硬チップとい
う）１〜１５をそれぞれ製造した。Prepare Ta, Nb, W) C-N powder, Co powder, Nl powder, and Fe powder, and further have a TiC whisker having an aspect ratio (length/'diameter) in the range of lO ~ 100,
TiN whiskers and TiCN voice force were prepared, these raw materials were each blended into the composition shown in Table 1, the raw material powder except voice force was mixed in a ball mill for 72 hours, and then whiskers were added to this. Mix gently and
After drying, it is press-molded into a green compact at a pressure of 1 Oton/cj, and this green compact is vacuum sintered at a temperature of 1380 to 1400°C in a vacuum of IXIO'torr.
Or temperature: 1380-1400℃, pressure crab 200k
Hot pressed under g/e- conditions, polished and S
(hereinafter referred to as the present invention cemented carbide tip)
1 to 15, and conventional WCC cemented carbide indexable tips (hereinafter referred to as conventional cemented carbide tips) containing no whiskers were manufactured, respectively.
つぎに、この結果得られた各種の超硬チップについて、
被削材： Ｓ Ｎ ＣＭ４３９（硬さ： ＨＢ２５０）
の旬月、切削速度： ｌｌ０ｒｎ ／ｌｌｎ ｓ送
リ： ０．４ ｍｍ／ ｒｅｖ、、切込み：２報〜
の条件で鋼の高送り乾式断続切削試験を行ない、逃げ面
摩耗幅が０．３關に至るまでの切削時間を測定すると共
に、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 carbide tips obtained as a result, work material: SN CM439 (hardness: HB250)
Cutting speed: ll0rn /lln s feed
A high-feed dry intermittent cutting test was conducted on steel under the conditions of: 0.4 mm/rev, depth of cut: 2 reports, and the cutting time until the flank wear width reached 0.3 mm was measured. I observed the condition of the blade. These results are shown in Table 1.
第１表に示される結果から、本発明超硬チップ１〜１５
は、いずれもホイスカの含有によってすぐれた耐欠損性
を有するようになるので、苛酷な条件下での断続切削で
もすぐれた耐摩耗性を示すのに対して、従来超硬チップ
１〜１５は、いずれも耐欠損性不足が原因で、切刃に欠
損やチッピングが発生し、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 carbide tips 1 to 15 of the present invention
All of these have excellent fracture resistance due to the inclusion of whiskers, so they exhibit excellent wear resistance even in interrupted cutting under severe conditions, whereas conventional carbide tips 1 to 15 have In either case, it is clear that chipping and chipping occur on the cutting edge due to insufficient fracture resistance, resulting in only a short service life.
上述のように、この発明のＷＣＣ超超硬合金製切削工具
、すぐれた耐欠損性を有するので、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（ｉやチッピングの発生が
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 WCC cemented carbide cutting tool of the present invention has excellent fracture resistance, so it can be used for interrupted cutting and milling under heavy cutting conditions such as high speed cutting, high feed, and high depth of cut. The cutting edge does not suffer from chipping or chipping, exhibits excellent wear resistance, and exhibits excellent cutting performance over an extremely long period of time.
出 代 願人： 三菱金属株式会社 理人：富 外１名Out teenager Requester: Mitsubishi Metals Corporation Rito: wealth 1 other person
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
硬合金に、 同じく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種からなるホイスカ
を、合金全体に占める割合で５〜４０重量％含有させて
なる炭化タングステン基超硬合金で構成したことを特徴
とする耐欠損性のすぐれた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 tungsten carbide-based cemented carbide having a tungsten carbide-based cemented carbide having a composition of 5 to 40% by weight of whiskers made of one or two of Ti carbides, nitrides, and carbonitrides as a dispersed phase-forming component in the proportion of the entire alloy. A cutting tool made of a tungsten carbide-based cemented carbide having excellent fracture resistance, characterized in that it is made of a tungsten carbide-based cemented carbide having a tungsten carbide-based cemented carbide containing %.
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
テン基超硬合金に、 同じく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種からなるホイスカ
を、合金全体に占める割合で５〜４０重量％含有させて
なる炭化タングステン基超硬合金で構成したことを特徴
とする耐欠損性のすぐれた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
0% by weight, and the remainder is tungsten carbide as a dispersed phase forming component and unavoidable impurities. A tungsten carbide-based cemented carbide with excellent fracture resistance characterized by being made of a tungsten carbide-based cemented carbide containing 5 to 40% by weight of whiskers made of one or two of the following: Tungsten-based cemented carbide cutting tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63223297A JP2668977B2 (en) | 1988-09-06 | 1988-09-06 | Cutting tool made of tungsten carbide based cemented carbide with excellent fracture resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63223297A JP2668977B2 (en) | 1988-09-06 | 1988-09-06 | Cutting tool made of tungsten carbide based cemented carbide with excellent fracture resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0271904A true JPH0271904A (en) | 1990-03-12 |
| JP2668977B2 JP2668977B2 (en) | 1997-10-27 |
Family
ID=16795935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63223297A Expired - Lifetime JP2668977B2 (en) | 1988-09-06 | 1988-09-06 | Cutting tool made of tungsten carbide based cemented carbide with excellent fracture resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2668977B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100497850B1 (en) * | 2002-12-09 | 2005-06-29 | 대구텍 주식회사 | sinterd alloy of tungsten carbide having tensile strength and wear resistance character & cutting tools using the same |
| JP2008274439A (en) * | 2008-05-21 | 2008-11-13 | Akita Prefecture | W-ti-c-based composite body and production method therefor |
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 JP63223297A patent/JP2668977B2/en not_active Expired - Lifetime
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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100497850B1 (en) * | 2002-12-09 | 2005-06-29 | 대구텍 주식회사 | sinterd alloy of tungsten carbide having tensile strength and wear resistance character & cutting tools using the same |
| JP2008274439A (en) * | 2008-05-21 | 2008-11-13 | Akita Prefecture | W-ti-c-based composite body and production method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2668977B2 (en) | 1997-10-27 |
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