JPH0890310A - Surface coat cutting tool - Google Patents
Surface coat cutting toolInfo
- Publication number
- JPH0890310A JPH0890310A JP24994494A JP24994494A JPH0890310A JP H0890310 A JPH0890310 A JP H0890310A JP 24994494 A JP24994494 A JP 24994494A JP 24994494 A JP24994494 A JP 24994494A JP H0890310 A JPH0890310 A JP H0890310A
- Authority
- JP
- Japan
- Prior art keywords
- cutting tool
- titanium
- layer
- plane
- ray diffraction
- 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
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、超硬合金基体または
サーメット基体の表面に、Ｘ線回折による最大ピークが
（１１１）面であるチタンの炭窒化物層からなる単層ま
たはＸ線回折による最大ピークが（１１１）面であるチ
タンの炭窒化物層とその他にチタンの炭化物、窒化物、
炭酸化物、炭窒酸化物および酸化アルミニウムのうちの
１種または２種以上を含む複層を化学蒸着法により形成
してなる表面被覆切削工具に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single layer composed of a carbonitride layer of titanium having a maximum peak (111) plane by X-ray diffraction on the surface of a cemented carbide substrate or a cermet substrate, or by X-ray diffraction. A titanium carbonitride layer having a maximum peak at the (111) plane and other titanium carbides and nitrides,
The present invention relates to a surface-coated cutting tool obtained by forming a multi-layer containing one kind or two or more kinds of a carbon oxide, a carbonitride oxide and an aluminum oxide by a chemical vapor deposition method.
【０００２】[0002]
【従来の技術】従来、超硬合金基体またはサーメット基
体の表面に、チタンの炭窒化物からなる単層、または少
なくとも１層のチタンの炭窒化物層を含み、さらに必要
に応じて、チタンの炭化物、窒化物、炭酸化物、炭窒酸
化物および酸化アルミニウムのうちの１種または２種以
上を含む複層を化学蒸着法により形成してなる表面被覆
切削工具は良く知られており、鋼や鋳鉄などの連続切削
や断続切削に用いられている。前記従来のチタンの炭窒
化物層のＸ線回折による最大ピークは、通常、（２０
０）面に現れる。2. Description of the Related Art Conventionally, a surface of a cemented carbide substrate or a cermet substrate contains a single layer of carbonitride of titanium or at least one carbonitride layer of titanium. Surface-coated cutting tools formed by chemical vapor deposition of multiple layers containing one or more of carbides, nitrides, carbonates, carbonitrides and aluminum oxides are well known. It is used for continuous cutting and intermittent cutting of cast iron. The maximum peak by the X-ray diffraction of the conventional carbonitride layer of titanium is usually (20
It appears on the 0) plane.
【０００３】[0003]
【発明が解決しようとする課題】しかし、近年、切削工
程の省力化および短縮化に対する要求は強く、これに伴
ない、より一段と苛酷な条件下での高送りおよび高切込
みなどの高速連続切削や断続切削が強いられる傾向にあ
り、かかる過酷な切削条件では切削中に刃先温度が１０
００℃を越え、急速に逃げ面摩耗が進行し、さらに硬質
被覆層が剥離するなどして比較的早期に欠損し、従来の
表面被覆切削工具は十分な工具寿命が得られていなかっ
た。However, in recent years, there has been a strong demand for labor saving and shortening of the cutting process, and with this, high-speed continuous cutting such as high feed and high depth of cut under more severe conditions is required. Intermittent cutting tends to be forced, and the cutting edge temperature is 10 during cutting under such severe cutting conditions.
The flank wear rapidly progressed over 00 ° C., and the hard coating layer was peeled off to cause a relatively short break, so that the conventional surface-coated cutting tool could not have a sufficient tool life.
【０００４】[0004]
【課題を解決するための手段】そこで本発明者らは、か
かる観点から、従来よりもさらに一層使用寿命の長い表
面被覆切削工具を開発すべく研究を行っていたところ、
基体表面に、Ｘ線回折による最大ピークが（１１１）面
のチタンの炭窒化物からなる単層、または少なくとも１
層のＸ線回折による最大ピークが（１１１）面のチタン
の炭窒化物層を含み、さらに必要に応じて、チタンの炭
化物、窒化物、炭酸化物、炭窒酸化物および酸化アルミ
ニウムのうちの１種または２種以上を含む複層を化学蒸
着法により形成した表面被覆切削工具は、従来の表面被
覆切削工具に比べて使用寿命が長くなるという研究結果
が得られたのである。From this viewpoint, the present inventors have been conducting research to develop a surface-coated cutting tool having a longer service life than the conventional one.
On the surface of the substrate, a single layer made of titanium carbonitride whose maximum peak by X-ray diffraction is (111) plane, or at least 1
The layer includes a titanium carbonitride layer whose maximum peak by X-ray diffraction is a (111) plane, and, if necessary, one of titanium carbide, nitride, carbonate, carbonitride oxide, and aluminum oxide. It has been obtained that the surface-coated cutting tool in which a single layer or a multi-layer containing two or more layers is formed by the chemical vapor deposition method has a longer service life than the conventional surface-coated cutting tool.
【０００５】この発明は、かかる研究結果にもとずいて
なされたものであって、（１） 基体表面に、チタンの
炭窒化物層からなる単層を被覆してなる表面被覆切削工
具において、前記チタンの炭窒化物層はＸ線回折による
最大ピークが（１１１）面に現れるチタンの炭窒化物層
である表面被覆切削工具、（２） 基体表面に、少なく
とも１層のチタンの炭窒化物層を含み、さらにチタンの
炭化物、窒化物、炭酸化物、炭窒酸化物および酸化アル
ミニウムのうちの１種または２種以上を含む複層を被覆
してなる切削工具において、前記チタンの炭窒化物層
は、Ｘ線回折による最大ピークが（１１１）面に現れる
チタンの炭窒化物層である表面被覆切削工具、に特徴を
有するものである。The present invention has been made on the basis of the results of such research. (1) In a surface-coated cutting tool comprising a substrate surface coated with a single layer of a carbonitride layer of titanium, The titanium carbonitride layer is a titanium carbonitride layer in which the maximum peak by X-ray diffraction appears on the (111) plane. (2) At least one titanium carbonitride layer on the substrate surface. A cutting tool comprising a plurality of layers and further containing one or more of titanium carbides, nitrides, carbon oxides, carbonitride oxides and aluminum oxides. The layer is characterized by a surface-coated cutting tool which is a carbonitride layer of titanium in which the maximum peak by X-ray diffraction appears on the (111) plane.
【０００６】前記Ｘ線回折による最大ピークが（１１
１）面に現れるチタンの炭窒化物層は、２番目に強い結
晶面のＸ線回折によるピークの１．５倍以上であること
が一層好ましく、前記２番目に強い結晶面は（２２０）
面、（２００）面などである。ここで、チタンの炭窒化
物層の（１１１）面は、ＡＳＴＭ６−０６１４で定義さ
れるＴｉＣの（１１１）面の面間距離２．５１オングス
トロームおよびＡＳＴＭ６−０６４２で定義されるＴｉ
Ｎの（１１１）面の面間距離２．４４オングストローム
の間の面間距離を有するものとする。同様にチタンの炭
窒化物層の（２００）面は、ＴｉＣの（２００）面の面
間距離２．１７９オングストロームおよびＴｉＮの（２
００）面の面間距離２．１２オングストロームの間の面
間距離を有し、さらに、チタンの炭窒化物層の（２２
０）面は、ＴｉＣの（２２０）面の面間距離１．５３５
オングストロームおよびＴｉＮの（２２０）面の面間距
離１．４９６オングストロームの間の面間距離を有する
ものとする。The maximum peak by the X-ray diffraction is (11
It is more preferable that the carbonitride layer of titanium appearing on the 1) plane is 1.5 times or more of the peak by the X-ray diffraction of the second strongest crystal plane, and the second strongest crystal plane is (220).
Plane, (200) plane, and the like. Here, the (111) plane of the carbonitride layer of titanium is 2.51 angstroms between the (111) planes of TiC defined by ASTM6-0614 and Ti defined by ASTM6-0642.
It is assumed that the (111) plane of N has an interplanar distance of 2.44 angstroms. Similarly, the (200) plane of the carbonitride layer of titanium has a surface distance of 2.179 angstroms of the (200) plane of TiC and (2) of TiN.
The interplanar distance of the (00) plane is 2.12 angstroms, and the interplane distance of the titanium carbonitride layer of (22
The (0) plane is the distance between the TiC (220) planes of 1.535.
It is assumed to have an interplanar distance between the (220) planes of Angstrom and TiN of 1.496 angstroms.
【０００７】この発明のＸ線回折による最大ピークが
（１１１）面に現れるチタンの炭窒化物層は、化学蒸着
装置内の温度を比較的低温の７００〜１０００℃に保持
し、化学蒸着反応開始時はＴｉＣｌ4 ガス：０．５〜１
０Ｖｏｌ％、Ｎ2 ：１〜５０Ｖｏｌ％、残りがＨ2 から
なる混合ガスを流しながら、さらにＣＨ3 ＣＮガスを流
さずまたは流しても微量流し、化学蒸着反応終了時はＣ
Ｈ3 ＣＮガスを０．１〜５．０Ｖｏｌ％の範囲内の所定
のＣＨ3 ＣＮガス流量になるようにＣＨ3 ＣＮガス流量
を化学蒸着反応中に増加しながら供給することにより形
成される。The titanium carbonitride layer of which the maximum peak by the X-ray diffraction of the present invention appears on the (111) plane keeps the temperature inside the chemical vapor deposition apparatus at a relatively low temperature of 700 to 1000 ° C. and starts the chemical vapor deposition reaction. TiCl 4 gas: 0.5 to 1
While flowing a mixed gas of 0 Vol%, N 2 : 1 to 50 Vol%, and the balance of H 2 , a small amount of CH 3 CN gas may be flowed without flowing, or at the end of the chemical vapor deposition reaction, C
It is formed by supplying with increasing H 3 CN gas CH 3 CN gas flow rate to a predetermined CH 3 CN gas flow rate in the range of 0.1～5.0Vol% in chemical vapor deposition reaction.
【０００８】[0008]
実施例１ 通常の粉末冶金法により製造したＷＣ−６％Ｃｏからな
る成分組成を有しかつＩＳＯ規格のＳＮＭＡ４３２に定
めた形状の切削工具を用意した。この切削工具を通常の
化学蒸着装置に装入し、 温度：９１０℃、圧力：５０torr、 反応ガス組成（開始時）：２％ＴｉＣｌ4 −３８％Ｎ2
−０．２％ＣＨ3 ＣＮ−残り％Ｈ2 、 反応ガス組成（終了時）：２％ＴｉＣｌ4 −３８％Ｎ2
−１％ＣＨ3 ＣＮ−残り％Ｈ2 、 の条件でＣＨ3 ＣＮガス量を増加させながら６時間反応
ガスを流し、厚さ：５μｍのＴｉＣＮ層を形成し、本発
明被覆切削工具１を作製した。このＴｉＣＮ層をＸ線回
折測定したところ、最大ピークが（１１１）面に現れ、
２番目に強いピーク強度は（２２０）面に現れており、
（１１１）面のピーク強度は（２２０）面のピーク強度
の２．１倍であった。Example 1 A cutting tool having a composition of WC-6% Co produced by a usual powder metallurgy method and having a shape defined in ISO standard SNMA432 was prepared. This cutting tool was loaded into a normal chemical vapor deposition apparatus, temperature: 910 ° C., pressure: 50 torr, reaction gas composition (at the start): 2% TiCl 4 -38% N 2
-0.2% CH 3 CN- remaining% H 2, the reaction gas composition (end): 2% TiCl 4 -38% N 2
-1% CH 3 CN- flowing remaining% H 2, condition CH 3 CN gas of 6 hours the reaction gas while increasing the thickness: forming a TiCN layer of 5 [mu] m, manufactured present invention coated cutting tool 1 did. When this TiCN layer was measured by X-ray diffraction, the maximum peak appeared on the (111) plane,
The second strongest peak intensity appears on the (220) plane,
The peak intensity of the (111) plane was 2.1 times the peak intensity of the (220) plane.
【０００９】従来例１ 前記切削工具を通常の化学蒸着装置に装入し、 温度：８５０℃、圧力：５０torr、 反応ガス組成：２％ＴｉＣｌ4 −３０％Ｎ2 −１％ＣＨ
3 ＣＮ−残り％Ｈ2 、 の条件で一定組成の反応ガスを６時間流しながら厚さ：
５μｍのＴｉＣＮ層を形成し、従来被覆切削工具１を作
製した。このＴｉＣＮ層をＸ線回折測定したところ、最
大ピークが（２００）面に現れ、２番目に強いピークは
（２２０）面に現れていた。Conventional Example 1 The cutting tool was loaded into a conventional chemical vapor deposition apparatus, and temperature: 850 ° C., pressure: 50 torr, reaction gas composition: 2% TiCl 4 -30% N 2 -1% CH.
Thickness of 3 % CN-remaining% H 2 while flowing a reaction gas having a constant composition for 6 hours:
A TiCN layer of 5 μm was formed, and a conventional coated cutting tool 1 was produced. When this TiCN layer was subjected to X-ray diffraction measurement, the maximum peak appeared on the (200) plane and the second strongest peak appeared on the (220) plane.
【００１０】得られた本発明被覆切削工具１および従来
被覆切削工具１について、 被削材 ：ＦＣ２５、 切削速度：２５０ｍ／min 、 送 り：０．４mm／rev 、 切込み ：２mm、 切削油 ：水溶性、 の条件で連続切削試験を行ない、切刃の逃げ面摩耗幅が
０．３０ｍｍ以上になった時を工具寿命と判断し、工具
寿命に至までの切削時間を測定したところ、本発明被覆
切削工具１の工具寿命は２８分であり、一方、従来被覆
切削工具１の工具寿命は１２分であった。Regarding the obtained coated cutting tool 1 of the present invention and the conventional coated cutting tool 1, the work material is FC25, the cutting speed is 250 m / min, the feed is 0.4 mm / rev, the depth of cut is 2 mm, and the cutting oil is water-soluble. A continuous cutting test was conducted under the following conditions, and when the flank wear width of the cutting edge was 0.30 mm or more, the tool life was judged, and the cutting time up to the tool life was measured. The tool life of the cutting tool 1 was 28 minutes, while the tool life of the conventional coated cutting tool 1 was 12 minutes.
【００１１】実施例２ 通常の粉末冶金法により製造したＷＣ−５．５％Ｃｏか
らなる成分組成を有しかつＩＳＯ規格のＳＮＭＡ４３２
に定めた形状の切削工具を用意した。前記切削工具を通
常の化学蒸着装置に装入し、 温度：９００℃、圧力：７０torr、 反応ガス組成（開始時）：２％ＴｉＣｌ4 −３８％Ｎ2
−０．１％ＣＨ3 ＣＮ−残り％Ｈ2 、 反応ガス組成（終了時）：２％ＴｉＣｌ4 −３８％Ｎ2
−１％ＣＨ3 ＣＮ−残り％Ｈ2 、 となるようにＣＨ3 ＣＮガス量を増加させながら６時間
反応ガスを流し、厚さ：６μｍのＴｉＣＮ層を形成し
た。このＴｉＣＮ層をＸ線回折測定したところ、最大ピ
ークが（１１１）面に現れ、２番目に強いピークは（２
２０）面に現れており、（１１１）面のピーク強度は
（２２０）面のピーク強度の２．０倍であった。Example 2 SNMA432 of ISO standard having a composition of WC-5.5% Co produced by a conventional powder metallurgy method.
A cutting tool having the shape defined in 1. was prepared. The cutting tool was loaded in a normal chemical vapor deposition apparatus, temperature: 900 ° C., pressure: 70 torr, reaction gas composition (at the start): 2% TiCl 4 -38% N 2
-0.1% CH 3 CN- remaining% H 2, the reaction gas composition (end): 2% TiCl 4 -38% N 2
The reaction gas was flowed for 6 hours while increasing the amount of CH 3 CN gas such that -1% CH 3 CN-remaining% H 2 , to form a TiCN layer having a thickness of 6 μm. When this TiCN layer was subjected to X-ray diffraction measurement, the maximum peak appeared on the (111) plane and the second strongest peak was (2
The peak intensity of the (111) plane was 2.0 times that of the (220) plane.
【００１２】その後、 温度：１０００℃、圧力：５０torr、 反応ガス組成：３％ＡｌＣｌ3 −７％ＣＯ2 −３％ＨＣ
ｌ−残りＨ2 、 の条件下で４時間化学蒸着し、厚さ：２μｍのＡｌ2 Ｏ
3 層を形成し、ＴｉＣＮ層およびＡｌ2 Ｏ3 層からなる
複層を被覆した本発明被覆切削工具２を作製した。Thereafter, temperature: 1000 ° C., pressure: 50 torr, reaction gas composition: 3% AlCl 3 -7% CO 2 -3% HC
l-remaining H 2 , chemical vapor deposition for 4 hours, thickness: 2 μm of Al 2 O
A coated cutting tool 2 of the present invention was produced in which three layers were formed and a multilayer consisting of a TiCN layer and an Al 2 O 3 layer was coated.
【００１３】従来例２ 実施例２で得られた切削工具を使用し、この切削工具を
通常の化学蒸着装置に装入し、 温度：８６０℃、圧力：７０torr、 反応ガス組成：２．５％ＴｉＣｌ4 −４０％Ｎ2 −１％
ＣＨ3 ＣＮ−残り％Ｈ2 、 の条件で一定組成の反応ガスを５時間流し、厚さ：６μ
ｍのＴｉＣＮ層を形成した。このＴｉＣＮ層をＸ線回折
測定したところ、最大ピークが（２００）面に現れ、２
番目に強いピーク強度は（２２０）面に現れていた。Conventional Example 2 The cutting tool obtained in Example 2 was used, and this cutting tool was loaded into a usual chemical vapor deposition apparatus, and temperature: 860 ° C., pressure: 70 torr, reaction gas composition: 2.5% TiCl 4 -40% N 2 -1%
CH 3 CN-remaining% H 2 , a reaction gas having a constant composition was allowed to flow for 5 hours, and the thickness was 6 μm.
m TiCN layer was formed. When this TiCN layer was subjected to X-ray diffraction measurement, a maximum peak appeared on the (200) plane and 2
The second strongest peak intensity appeared on the (220) plane.
【００１４】その後、実施例２と同じ条件で、厚さ：２
μｍのＡｌ2 Ｏ3 層を形成し、ＴｉＣＮ層およびＡｌ2
Ｏ3 層からなる複層を被覆した従来被覆切削工具２を作
製した。Thereafter, under the same conditions as in Example 2, the thickness: 2
forming a the Al 2 O 3 layer of [mu] m, TiCN layers and Al 2
A conventional coated cutting tool 2 coated with a multi-layer consisting of O 3 layers was produced.
【００１５】得られた本発明被覆切削工具２および従来
被覆切削工具２について、 被削材 ：ＦＣＤ４５、 切削速度：３００ｍ／min 、 送 り：０．３mm／rev 、 切込み ：２mm、 切削油 ：水溶性、 の条件で連続切削試験を行ない、切刃の逃げ面摩耗幅が
０．３０ｍｍ以上になった時を工具寿命と判断し、工具
寿命に至までの切削時間を測定したところ、本発明被覆
切削工具２の工具寿命は２５分であり、一方、従来被覆
切削工具２の工具寿命は１１分であった。Regarding the obtained coated cutting tool 2 of the present invention and the conventional coated cutting tool 2, the work material: FCD45, cutting speed: 300 m / min, feed: 0.3 mm / rev, depth of cut: 2 mm, cutting oil: water-soluble A continuous cutting test was conducted under the following conditions, and when the flank wear width of the cutting edge was 0.30 mm or more, the tool life was judged, and the cutting time up to the tool life was measured. The tool life of the cutting tool 2 was 25 minutes, while the tool life of the conventional coated cutting tool 2 was 11 minutes.
【００１６】実施例３ 通常の粉末冶金法により製造したＷＣ−６％ＴｉＣ−６
％ＴａＣ−６％Ｃｏからなる成分組成を有しかつＩＳＯ
規格のＣＮＭＧ４３２に定めた形状の切削工具を用意し
た。前記切削工具を通常の化学蒸着装置に装入し、 温度：９２０℃、圧力：５０torr、 反応ガス組成（開始時）：２．５％ＴｉＣｌ4 −３５％
Ｎ2 −残り％Ｈ2 （ＣＨ3 ＣＮなし）、 反応ガス組成（終了時）：２．５％ＴｉＣｌ4 −３５％
Ｎ2 −２％ＣＨ3 ＣＮ−残り％Ｈ2 、 となるようにＣＨ3 ＣＮガス量を増加させながら６時間
反応ガスを流し、厚さ：６μｍのＴｉＣＮ層を形成し
た。このＴｉＣＮ層をＸ線回折測定したところ、最大ピ
ークが（１１１）面に現れ、２番目に強いピークは（２
２０）面に現れており、（１１１）面のピーク強度は
（２２０）面のピーク強度の２．３倍であった。Example 3 WC-6% TiC-6 produced by a conventional powder metallurgy method
% TaC-6% Co and has ISO
A cutting tool having a shape defined in the standard CNMG432 was prepared. The cutting tool was put into a normal chemical vapor deposition apparatus, and temperature: 920 ° C., pressure: 50 torr, reaction gas composition (at the start): 2.5% TiCl 4 -35%
N 2 -remaining% H 2 (without CH 3 CN), reaction gas composition (at the end): 2.5% TiCl 4 -35%
The reaction gas was allowed to flow for 6 hours while increasing the amount of CH 3 CN gas such that N 2 -2% CH 3 CN-remaining% H 2 , to form a TiCN layer having a thickness of 6 μm. When this TiCN layer was subjected to X-ray diffraction measurement, the maximum peak appeared on the (111) plane and the second strongest peak was (2
The peak intensity of the (111) plane was 2.3 times that of the (220) plane.
【００１７】その後、 温度：１０５０℃、圧力：５０torr、 反応ガス組成：３％ＴｉＣｌ4 −１０％ＣＨ4 −残り％
Ｈ2 、 の条件下で１時間化学蒸着し、厚さ：２μｍのＴｉＣ層
を形成し、さらに、 温度：１０３０℃、圧力：５０torr、 反応ガス組成：３％ＡｌＣｌ3 −９％ＣＯ2 −５％ＨＣ
ｌ−残りＨ2 、 の条件下で３時間化学蒸着し、厚さ：２μｍのＡｌ2 Ｏ
3 層を形成し、ＴｉＣＮ層、ＴｉＣ層およびＡｌ2 Ｏ3
層からなる複層を被覆した本発明被覆切削工具３を作製
した。After that, temperature: 1050 ° C., pressure: 50 torr, reaction gas composition: 3% TiCl 4 -10% CH 4 -remaining%
Chemical vapor deposition is carried out under the condition of H 2 for 1 hour to form a TiC layer having a thickness of 2 μm, further, temperature: 1030 ° C., pressure: 50 torr, reaction gas composition: 3% AlCl 3 -9% CO 2 -5 % HC
Chemical vapor deposition for 3 hours under conditions of 1-remaining H 2 and thickness: 2 μm of Al 2 O
3 layers are formed to form a TiCN layer, a TiC layer and an Al 2 O 3 layer.
The coated cutting tool 3 of the present invention coated with a multi-layer composed of layers was produced.
【００１８】従来例３ 実施例３で得られた切削工具を使用し、この切削工具を
通常の化学蒸着装置に装入し、 温度：８７０℃、圧力：５０torr、 反応ガス組成：２．５％ＴｉＣｌ4 −３５％Ｎ2 −２％
ＣＨ3 ＣＮ−残り％Ｈ2 、 の条件で一定組成の反応ガスを５時間流し、厚さ：６μ
ｍのＴｉＣＮ層を形成した。このＴｉＣＮ層をＸ線回折
測定したところ、最大ピークが（２００）面に現れ、２
番目に強いピークは（１１１）面に現れていた。Conventional Example 3 The cutting tool obtained in Example 3 was used, and the cutting tool was placed in a normal chemical vapor deposition apparatus, and temperature: 870 ° C., pressure: 50 torr, reaction gas composition: 2.5% TiCl 4 -35% N 2 -2%
CH 3 CN-remaining% H 2 , a reaction gas having a constant composition was allowed to flow for 5 hours, and the thickness was 6 μm.
m TiCN layer was formed. When this TiCN layer was subjected to X-ray diffraction measurement, a maximum peak appeared on the (200) plane and 2
The second strongest peak appeared on the (111) plane.
【００１９】その後、実施例３と同じ条件で厚さ：２μ
ｍのＴｉＣ層を形成したのち、さらに実施例３と同じ条
件で厚さ：２μｍのＡｌ2 Ｏ3 層を形成し、ＴｉＣＮ
層、ＴｉＣ層およびＡｌ2 Ｏ3 層からなる複層を被覆し
た従来被覆切削工具３を作製した。Thereafter, under the same conditions as in Example 3, the thickness was 2 μm.
m TiC layer was formed, and then an Al 2 O 3 layer having a thickness of 2 μm was formed under the same conditions as in Example 3 to form TiCN.
A conventional coated cutting tool 3 coated with a multilayer consisting of a layer, a TiC layer and an Al 2 O 3 layer was prepared.
【００２０】得られた本発明被覆切削工具３および従来
被覆切削工具３について、 被削材 ：ＳＣＭ４４０（硬さ：ＨB ２２０）、 切削速度：２００ｍ／min 、 送 り：０．３５mm／rev 、 切込み ：２mm、 切削油 ：なし、 切削時間：３０分、 の条件で連続切削試験を行ない、本発明被覆切削工具３
および従来被覆切削工具３の逃げ面摩耗幅を測定したと
ころ、本発明被覆切削工具３の逃げ面摩耗幅は０．２１
ｍｍであるに対し、従来被覆切削工具３の逃げ面摩耗幅
は０．６１ｍｍであった。Regarding the obtained coated cutting tool 3 of the present invention and the conventional coated cutting tool 3, a work material: SCM440 (hardness: H B 220), a cutting speed: 200 m / min, a feed: 0.35 mm / rev, Cutting depth: 2 mm, cutting oil: none, cutting time: 30 minutes, a continuous cutting test was carried out under the following conditions: coated cutting tool 3 of the present invention
When the flank wear width of the conventional coated cutting tool 3 was measured, the flank wear width of the coated cutting tool 3 of the present invention was 0.21.
While the flank wear width of the conventional coated cutting tool 3 was 0.61 mm, the flank wear width was 0.61 mm.
【００２１】[0021]
【発明の効果】実施例１〜３に示された結果から明らか
なように、Ｘ線回折による最大ピークが（１１１）面で
あるＴｉＣＮ層を有する本発明被覆切削工具１〜３をＸ
線回折による最大ピークが（２００）面であるＴｉＣＮ
層を有する従来被覆切削工具１〜３とそれぞれ比較した
場合、本発明被覆切削工具１〜３の方がいずれも切削寿
命が長いことがわかる。As is clear from the results shown in Examples 1 to 3, the coated cutting tools 1 to 3 of the present invention having the TiCN layer having the maximum peak by X-ray diffraction of the (111) plane were X-rayed.
TiCN whose maximum peak by line diffraction is the (200) plane
When compared with the conventional coated cutting tools 1 to 3 each having a layer, it can be seen that the coated cutting tools 1 to 3 of the present invention all have a longer cutting life.
【００３１】したがって、この発明の表面被覆切削工具
は、従来の表面被覆切削工具よりも一層優れた切削性能
を有しており、この発明の表面被覆切削工具を用いるこ
とにより切削工具交換回数などを減らすことができ、産
業の発展に大いに貢献しうるものである。Therefore, the surface-coated cutting tool of the present invention has much higher cutting performance than the conventional surface-coated cutting tool. It can be reduced and it can greatly contribute to the development of industry.
Claims (3)
る単層を被覆してなる表面被覆切削工具において、 前記チタンの炭窒化物層は、Ｘ線回折による最大ピーク
が（１１１）面に現れるチタンの炭窒化物層であること
を特徴とする表面被覆切削工具。1. A surface-coated cutting tool comprising a substrate surface coated with a single layer of a carbonitride layer of titanium, wherein the carbonitride layer of titanium has a maximum peak by X-ray diffraction of (111) plane. A surface-coated cutting tool, which is a carbonitride layer of titanium appearing in.
炭窒化物層を含み、さらにチタンの炭化物、窒化物、炭
酸化物、炭窒酸化物および酸化アルミニウムのうちの１
種または２種以上を含む複層を被覆してなる切削工具に
おいて、 前記チタンの炭窒化物層は、Ｘ線回折による最大ピーク
が（１１１）面に現れるチタンの炭窒化物層であること
を特徴とする表面被覆切削工具。2. The surface of the substrate includes at least one titanium carbonitride layer, and one of titanium carbide, nitride, carbon oxide, carbonitride oxide, and aluminum oxide.
In a cutting tool formed by coating a single layer or a multi-layer containing two or more species, the titanium carbonitride layer is a titanium carbonitride layer in which a maximum peak by X-ray diffraction appears on a (111) plane. A characteristic surface-coated cutting tool.
のＸ線回折による最大ピーク強度が、２番目に強い結晶
面のＸ線回折によるピーク強度の１．５倍以上であるこ
とを特徴とする請求項１または２記載の表面被覆切削工
具。3. The maximum peak intensity of X-ray diffraction of the (111) plane of the carbonitride layer of titanium is 1.5 times or more the peak intensity of X-ray diffraction of the second strongest crystal plane. The surface-coated cutting tool according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24994494A JPH0890310A (en) | 1994-09-19 | 1994-09-19 | Surface coat cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24994494A JPH0890310A (en) | 1994-09-19 | 1994-09-19 | Surface coat cutting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0890310A true JPH0890310A (en) | 1996-04-09 |
Family
ID=17200507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24994494A Pending JPH0890310A (en) | 1994-09-19 | 1994-09-19 | Surface coat cutting tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0890310A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007260851A (en) * | 2006-03-29 | 2007-10-11 | Kyocera Corp | Surface coated cutting tool |
| JP2008080476A (en) * | 2006-09-01 | 2008-04-10 | Mitsubishi Materials Corp | Surface coated cutting tool with hard coated layer exerting excellent abrasion resistance in high speed cutting work |
| JP2009056536A (en) * | 2007-08-31 | 2009-03-19 | Mitsubishi Materials Corp | Surface-coated cutting tool |
| JP2009056537A (en) * | 2007-08-31 | 2009-03-19 | Mitsubishi Materials Corp | Surface-coated cutting tool |
| JP2009056538A (en) * | 2007-08-31 | 2009-03-19 | Mitsubishi Materials Corp | Surface-coated cutting tool of which hard coating layer achieves excellent chipping resistance |
| JP2009255282A (en) * | 2008-03-28 | 2009-11-05 | Mitsubishi Materials Corp | Cutting tool formed of surface-coated cubic boron nitride base ultra high-pressure sintered material |
| WO2018168740A1 (en) * | 2017-03-14 | 2018-09-20 | 三菱マテリアル株式会社 | Surface-coated cutting tool having hard coating layer exhibiting excellent chipping resistance and wear resistance |
| JP2018149668A (en) * | 2017-03-14 | 2018-09-27 | 三菱マテリアル株式会社 | Surface coated cutting tool with hard coating layer exhibiting superior chipping resistance and abrasion resistance |
| US10407777B2 (en) * | 2014-09-26 | 2019-09-10 | Walter Ag | Coated cutting tool insert with MT-CVD TiCN on TiAI(C,N) |
| EP3620552A1 (en) | 2018-09-04 | 2020-03-11 | Tungaloy Corporation | Coated cutting tool |
| US10974324B2 (en) | 2017-11-29 | 2021-04-13 | Tungaloy Corporation | Coated cutting tool |
-
1994
- 1994-09-19 JP JP24994494A patent/JPH0890310A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007260851A (en) * | 2006-03-29 | 2007-10-11 | Kyocera Corp | Surface coated cutting tool |
| JP2008080476A (en) * | 2006-09-01 | 2008-04-10 | Mitsubishi Materials Corp | Surface coated cutting tool with hard coated layer exerting excellent abrasion resistance in high speed cutting work |
| JP2009056536A (en) * | 2007-08-31 | 2009-03-19 | Mitsubishi Materials Corp | Surface-coated cutting tool |
| JP2009056537A (en) * | 2007-08-31 | 2009-03-19 | Mitsubishi Materials Corp | Surface-coated cutting tool |
| JP2009056538A (en) * | 2007-08-31 | 2009-03-19 | Mitsubishi Materials Corp | Surface-coated cutting tool of which hard coating layer achieves excellent chipping resistance |
| JP2009255282A (en) * | 2008-03-28 | 2009-11-05 | Mitsubishi Materials Corp | Cutting tool formed of surface-coated cubic boron nitride base ultra high-pressure sintered material |
| US10407777B2 (en) * | 2014-09-26 | 2019-09-10 | Walter Ag | Coated cutting tool insert with MT-CVD TiCN on TiAI(C,N) |
| WO2018168740A1 (en) * | 2017-03-14 | 2018-09-20 | 三菱マテリアル株式会社 | Surface-coated cutting tool having hard coating layer exhibiting excellent chipping resistance and wear resistance |
| JP2018149668A (en) * | 2017-03-14 | 2018-09-27 | 三菱マテリアル株式会社 | Surface coated cutting tool with hard coating layer exhibiting superior chipping resistance and abrasion resistance |
| US10974324B2 (en) | 2017-11-29 | 2021-04-13 | Tungaloy Corporation | Coated cutting tool |
| EP3620552A1 (en) | 2018-09-04 | 2020-03-11 | Tungaloy Corporation | Coated cutting tool |
| US11007579B2 (en) | 2018-09-04 | 2021-05-18 | Tungaloy Corporation | Coated cutting tool |
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