JP2535866B2 - Surface coated hard alloy cutting tool - Google Patents
Surface coated hard alloy cutting toolInfo
- Publication number
- JP2535866B2 JP2535866B2 JP62029268A JP2926887A JP2535866B2 JP 2535866 B2 JP2535866 B2 JP 2535866B2 JP 62029268 A JP62029268 A JP 62029268A JP 2926887 A JP2926887 A JP 2926887A JP 2535866 B2 JP2535866 B2 JP 2535866B2
- Authority
- JP
- Japan
- Prior art keywords
- cutting tool
- cutting
- carbonitride
- hard alloy
- coated
- 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.)
- Expired - Lifetime
Links
Landscapes
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Chemical Vapour Deposition (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、すぐれた耐摩耗性と耐欠損性を有し、か
つ使用寿命の安定した表面被覆硬質合金製切削工具に関
するものである。TECHNICAL FIELD The present invention relates to a surface-coated hard alloy cutting tool having excellent wear resistance and fracture resistance and having a stable service life.
炭化タングステン（以下WCで示す）基超硬合金母材や
炭窒化チタン（以下TiCNで示す）基サーメット母材の表
面に、Tiの炭化物、窒化物、および炭窒化物（以下、そ
れぞれTiC,TiN,TiCNで示す）の内の１種の単層または２
種以上の複層からなる内層と、κ型酸化アルミニウム、
またはκ型酸化アルミニウムとα型酸化アルミニウムか
らなる外層（以下、κ型Al2O3主体の外層という）とで
構成された表面硬質層を被覆してなる表面被覆硬質合金
製切削工具（以下、表面被覆切削工具という）が知ら
れ、広く実用に供されている（特公昭61−15149号公
報）。On the surface of a tungsten carbide (hereinafter referred to as WC) based cemented carbide base material or a titanium carbonitride (hereinafter referred to as TiCN) based cermet base material, Ti carbide, nitride, and carbonitride (hereinafter referred to as TiC and TiN, respectively) , TiCN)), a single layer or 2
Inner layer consisting of multiple layers of at least one kind, and κ type aluminum oxide,
Alternatively, a surface-coated hard alloy cutting tool formed by coating a surface hard layer composed of an outer layer composed of κ-type aluminum oxide and α-type aluminum oxide (hereinafter, referred to as κ-type Al 2 O 3 -based outer layer) (hereinafter, A surface-coated cutting tool) is known and is widely put to practical use (Japanese Patent Publication No. 61-15149).
しかし、上記の従来表面被覆切削工具においては、使
用寿命に大きなバラツキがあり、このため切削定数で工
具交換する場合には、バラツキの下限値を考慮して、全
体的に短かい使用時間での工具交換を設定しているのが
現状であり、経済性の面で問題がある。However, in the above-mentioned conventional surface-coated cutting tools, there is a large variation in service life, and therefore, when exchanging tools with cutting constants, considering the lower limit of variation, the overall operating time is short. Currently, there is a tool change, and there is a problem in terms of economy.
そこで、本発明者等は、上述のような観点から、上記
の表面被覆切削工具の使用寿命のバラツキを抑制し、も
って使用寿命の全体的延命化をはかるべく研究を行なっ
た結果、内層については、Tiの炭窒酸化物（以下、TiCN
Oで示す）の単層、またはTiCNOとTiCおよびTiCNのうち
の１種もしくは２種の複層からなり、かつＸ線回折で
（220）面に最高ピークを有するようにすると、相対的
に耐摩耗性および耐欠損性が向上するようになるばかり
でなく、同種切削工具の使用寿命のバラツキが著しく抑
制されるようになり、使用寿命の全体的延命化を可能に
するという知見を得たのである。Therefore, the inventors of the present invention, from the above viewpoints, suppress variations in the service life of the surface-coated cutting tool, and as a result of conducting a study for the purpose of prolonging the life of the service life, the inner layer is , Ti oxycarbonitride (hereinafter, TiCN
(Indicated by O) or a single layer of TiCNO and one or two layers of TiC and TiCN and having the highest peak in the (220) plane by X-ray diffraction, We have found that not only are wear resistance and fracture resistance improved, but also variations in the service life of the same type of cutting tool are significantly suppressed, which makes it possible to extend the service life as a whole. is there.
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、WC基超硬合金母材またはTiCN基サーメット母材の
表面に、Ｘ線回折で（220）面に最高ピークが現われるT
iCNOの単層、またはTiCNOとTiCおよびTiCNの内の１種も
しくは２種の複層からなる内層と、κ型Al2O3主体の外
層とで構成された表面硬質層を被覆してなる、すぐれた
耐摩耗性と耐欠損性を有し、かつ安定した使用寿命を示
す表面被覆切削工具に特徴を有するものである。This invention has been made based on the above findings, and the highest peak appears on the (220) plane by X-ray diffraction on the surface of the WC-based cemented carbide base material or TiCN-based cermet base material.
A hard surface layer composed of an iCNO single layer, or an inner layer consisting of TiCNO and one or more multi-layers of TiC and TiCN, and an outer layer mainly composed of κ-type Al 2 O 3 is coated. It is characterized by a surface-coated cutting tool having excellent wear resistance and chipping resistance, and exhibiting a stable service life.
なお、この発明の表面被覆切削工具における内層と外
層は、化学蒸着装置における雰囲気圧力、温度、並びに
反応ガスの組成および流量割合などの条件を調整するこ
とによって形成することができる。The inner layer and the outer layer in the surface-coated cutting tool of the present invention can be formed by adjusting conditions such as atmospheric pressure, temperature, and composition and flow rate ratio of the reaction gas in the chemical vapor deposition device.
つぎに、この発明の表面被覆切削工具を実施例により
具体的に説明する。Next, the surface-coated cutting tool of the present invention will be specifically described with reference to examples.
実施例 １ WC基超硬合金母材として、通常の粉末冶金法で製造さ
れた、重量％で、72％WC−８％TiC−10％TaC−10％Coの
組成（ISO分類P30に相当）、並びにSNMN432の形状をも
った切削工具素材、またTiCN基サーメット母材として、
同じく通常の粉末冶金法で製造された、重量％で、50％
TiCN−15％WC−８％TaC−10％Mo2C−５％Ni−12％Coの
組成、並びにSNGN432の形状をもった切削工具素材をそ
れぞれ用意し、これらの切削工具素材の表面に、通常の
化学蒸着装置を用い、第１表に示される条件で同じく第
１表に示される組成および平均層厚の表面硬質層を形成
することによって、本発明表面被覆切削工具１〜４およ
び従来表面被覆切削工具１〜４をそれぞれ製造した。Example 1 A composition of 72% WC-8% TiC-10% TaC-10% Co (corresponding to ISO classification P 30) in% by weight, which was produced by a usual powder metallurgy method as a WC-based cemented carbide base material. ), And a cutting tool material with the shape of SNMN432, and a TiCN-based cermet base material,
50% by weight, also manufactured by normal powder metallurgy
The composition of the TiCN-15% WC-8% TaC-10% Mo 2 C-5% Ni-12% Co, and a cutting tool material having a shape of SNGN432 respectively provided on the surface of these cutting tools material, The surface-coated cutting tools 1 to 4 of the present invention and the conventional surface are formed by forming a hard surface layer having the composition and average layer thickness shown in Table 1 under the conditions shown in Table 1 by using an ordinary chemical vapor deposition apparatus. Coated cutting tools 1 to 4 were manufactured respectively.
ついで、本発明表面被覆切削工具１〜３および従来表
面被覆切削工具１〜３については、試験本数を10本と
し、 被削材:SNCM439（硬さ:HB230）の丸棒、 切削速度:170m/min、 送り:0.33mm/rev.、 切込み:2mm、 切削時間:30mm、 の条件で鋼の連続切削試験を行ない、切刃の逃げ面摩耗
幅を測定して耐摩耗性のバラツキを評価し、さらに、 被削材:SNCM439（硬さ:HB270）の溝つき丸棒、 切削速度:150m/min、 送り:0.25mm/rev.、 切込み:1.5mm、 の条件で鋼の断続切削試験を行ない、切刃に欠損が発生
するまでの切削時間を測定し、耐欠損性のバラツキを評
価した。Next, regarding the surface-coated cutting tools 1 to 3 of the present invention and the conventional surface-coated cutting tools 1 to 3, the number of test pieces is 10, and the work material is a round bar of SNCM439 (hardness: H B 230), cutting speed: 170m / min, feed: 0.33mm / rev., Depth of cut: 2mm, cutting time: 30mm, a continuous cutting test of steel is performed, and the flank wear width of the cutting edge is measured to evaluate variations in wear resistance. In addition, the work material: SNCM439 (hardness: H B 270) round bar with groove, cutting speed: 150 m / min, feed: 0.25 mm / rev., Depth of cut: 1.5 mm, intermittent cutting of steel A test was conducted to measure the cutting time until the cutting edge was broken to evaluate the variation in breaking resistance.
また、本発明表面被覆切削工具４および従来表面被覆
切削工具４については、同じく試験本数を10本とし、 被削材:SCM415（硬さ:HB140）の丸棒、 切削速度:200m/min、 送り:0.26mm/rev.、 切込み:1mm、 切削時間:45min、 の条件で鋼の連続切削試験を行ない、切刃の逃げ面摩耗
幅を測定して耐摩耗性のバラツキを評価し、さらに、 被削材:SCM415（硬さ:140）の角材、 切削速度:200m/min、 送り:0.2mm/rev.、 切込み:1.5mm、 の条件で鋼の断続切削試験を行ない、切刃に欠損が発生
するまでの切削時間を測定し、耐欠損性のバラツキを評
価した。これらの結果を第１図および第２図に示した。Further, regarding the surface-coated cutting tool 4 of the present invention and the conventional surface-coated cutting tool 4, the number of test pieces is 10, and the work material is a SCM415 (hardness: H B 140) round bar, and the cutting speed is 200 m / min. , Feed: 0.26 mm / rev., Depth of cut: 1 mm, cutting time: 45 min, a continuous cutting test of steel is performed, the flank wear width of the cutting edge is measured, and the variation in wear resistance is evaluated. , Work material: SCM415 (hardness: 140) square bar, Under the conditions of cutting speed: 200 m / min, feed: 0.2 mm / rev., Depth of cut: 1.5 mm, the steel is subjected to an intermittent cutting test, and the cutting time until a fracture occurs in the cutting edge is measured to determine the fracture resistance. The variation was evaluated. The results are shown in FIGS. 1 and 2.
第１図および第２図に示される結果から、本発明表面
被覆切削工具１〜４は、いずれも従来表面被覆切削工具
１〜４に比して、すぐれた耐摩耗性および耐欠損性を示
し、かつそのバラツキも著しく小さいことが明らかであ
る。From the results shown in FIG. 1 and FIG. 2, all of the surface-coated cutting tools 1 to 4 of the present invention show excellent wear resistance and fracture resistance as compared with the conventional surface-coated cutting tools 1 to 4. It is also clear that the variation is extremely small.
上述のように、この発明の表面被覆切削工具は、すぐ
れた耐摩耗性と耐欠損性を有し、かつそのバラツキも小
さいので、定数切削での切削工具の交換時間の延命化が
可能となるなど著しく長期に亘ってすぐれた切削性能を
安定的に発揮するのである。As described above, the surface-coated cutting tool of the present invention has excellent wear resistance and fracture resistance, and its variation is small, so that it is possible to prolong the life of the replacement time of the cutting tool in constant cutting. It provides stable cutting performance over a long period of time.
第１図は表面被覆切削工具:10本ごとの逃げ面摩耗幅を
示す図、第２図は同じく表面被覆切削工具:10本ごとの
切刃に欠損が発生するまでの切削時間を示す図である。Fig. 1 is a diagram showing the flank wear width for every 10 surface-coated cutting tools, and Fig. 2 is a diagram showing the cutting time until a cutting edge is broken for every 10 surface-coated cutting tools. is there.
Claims (1)
窒化チタン基サーメット母材の表面に、Ｘ線回折で（22
0）面に最強ピークが現われるTiの炭窒酸化物の単層、
またTiの炭窒酸化物とTiの炭化物および炭窒化物のうち
の１種もしくは２種の複層からなる内層と、κ型酸化ア
ルミニウム、またはκ型酸化アルミニウムとα型酸化ア
ルミニウムからなる外層とで構成された表面硬質層を被
覆してなる、すぐれた耐摩耗性と耐欠損性を有し、かつ
安定した使用寿命を示す表面被覆硬質合金製切削工具。1. A surface of a tungsten carbide-based cemented carbide base material or a titanium carbonitride-based cermet base material is subjected to X-ray diffraction (22
0) A single layer of carbonitride oxide of Ti showing the strongest peak on the surface,
In addition, an inner layer composed of one or two layers of Ti carbonitride oxide, Ti carbide and carbonitride, and an outer layer composed of κ-type aluminum oxide or κ-type aluminum oxide and α-type aluminum oxide. A surface-coated hard alloy cutting tool having excellent wear resistance and chipping resistance, and a stable service life, which is obtained by coating a surface hard layer composed of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62029268A JP2535866B2 (en) | 1987-02-10 | 1987-02-10 | Surface coated hard alloy cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62029268A JP2535866B2 (en) | 1987-02-10 | 1987-02-10 | Surface coated hard alloy cutting tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63195268A JPS63195268A (en) | 1988-08-12 |
| JP2535866B2 true JP2535866B2 (en) | 1996-09-18 |
Family
ID=12271530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62029268A Expired - Lifetime JP2535866B2 (en) | 1987-02-10 | 1987-02-10 | Surface coated hard alloy cutting tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2535866B2 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2668221B2 (en) * | 1987-09-26 | 1997-10-27 | 京セラ株式会社 | Coated cemented carbide |
| SE464818B (en) * | 1989-06-16 | 1991-06-17 | Sandvik Ab | COVERED SHOULD BE CUTTING |
| DE4209975A1 (en) * | 1992-03-27 | 1993-09-30 | Krupp Widia Gmbh | Composite body and its use |
| US5920760A (en) * | 1994-05-31 | 1999-07-06 | Mitsubishi Materials Corporation | Coated hard alloy blade member |
| SE514695C2 (en) * | 1995-07-14 | 2001-04-02 | Sandvik Ab | Cutting tool coated with alumina and method for its manufacture |
| JP3418066B2 (en) * | 1996-07-03 | 2003-06-16 | 日立金属株式会社 | Alumina-coated tool and manufacturing method thereof |
| JP3560303B2 (en) * | 1996-11-29 | 2004-09-02 | 日立金属株式会社 | Aluminum oxide coated tool and method of manufacturing the same |
| JP2007508095A (en) * | 2003-10-17 | 2007-04-05 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Apparatus for performing bioelectric interaction with an individual and method for performing on-demand lead-off detection |
| JP4534790B2 (en) * | 2005-02-23 | 2010-09-01 | 三菱マテリアル株式会社 | A surface-coated cermet cutting tool that exhibits excellent chipping resistance with a hard coating layer in high-speed intermittent cutting |
| JP4867364B2 (en) * | 2006-01-27 | 2012-02-01 | 横浜ゴム株式会社 | Bioelectric information measuring device |
| US8530050B2 (en) | 2007-05-22 | 2013-09-10 | United Technologies Corporation | Wear resistant coating |
| JP4825235B2 (en) * | 2008-04-25 | 2011-11-30 | 三菱電機株式会社 | Connection abnormality detection device and in-vehicle electronic device using the device |
| EP2614905A4 (en) | 2010-09-07 | 2016-06-01 | Sumitomo Elec Hardmetal Corp | Surface-coated cutting tool |
| KR101536462B1 (en) | 2013-12-23 | 2015-07-24 | 한국야금 주식회사 | Coated film for cutting tools for machining hrsa and cast iron |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56156767A (en) * | 1980-05-02 | 1981-12-03 | Sumitomo Electric Ind Ltd | Highly hard substance covering material |
| JPS6115149A (en) * | 1984-06-30 | 1986-01-23 | Canon Inc | Photoconductive film and electrophotographic sensitive body using it |
-
1987
- 1987-02-10 JP JP62029268A patent/JP2535866B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63195268A (en) | 1988-08-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |