JPH111762A - Cutting tool made of surface coated cemented carbide, having hard coating layer excellent in wear resistance - Google Patents
Cutting tool made of surface coated cemented carbide, having hard coating layer excellent in wear resistanceInfo
- Publication number
- JPH111762A JPH111762A JP15231497A JP15231497A JPH111762A JP H111762 A JPH111762 A JP H111762A JP 15231497 A JP15231497 A JP 15231497A JP 15231497 A JP15231497 A JP 15231497A JP H111762 A JPH111762 A JP H111762A
- Authority
- JP
- Japan
- Prior art keywords
- cemented carbide
- coating layer
- hard coating
- cutting tool
- coated cemented
- 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
Landscapes
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Physical Vapour Deposition (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、硬質被覆層がす
ぐれた耐摩耗性を有し、したがって例えば鋼などの連続
切削や断続切削で長期に亘ってすぐれた切削性能を発揮
し、工具寿命の延命化を可能ならしめる表面被覆超硬合
金製切削工具（以下、被覆超硬工具と云う）に関するも
のである。BACKGROUND OF THE INVENTION The present invention relates to a hard coating layer having excellent wear resistance, and therefore, exhibits excellent cutting performance over a long period of time in continuous cutting or interrupted cutting of, for example, steel, and has a long tool life. The present invention relates to a cutting tool made of a surface-coated cemented carbide (hereinafter, referred to as a coated cemented carbide tool) capable of extending the life.
【０００２】[0002]
【従来の技術】従来、一般に、例えば図３に概略説明図
で示される物理蒸着装置の１種であるアークイオンプレ
ーティング装置を用い、ヒータで装置内を、例えば雰囲
気を２０ｍｔｏｒｒの真空として、５００℃の温度に加
熱した状態で、アノード電極と所定組成を有するＴｉ−
Ａｌ合金がセットされたカソード電極（蒸発源）との間
に、例えば電圧：３５Ｖ、電流：９０Ａの条件でアーク
放電を発生させ、同時に装置内に反応ガスとして窒素ガ
スを導入し、一方炭化タングステン（以下、ＷＣで示
す）基超硬合金または炭窒化チタン（以下、ＴｉＣＮで
示す）基サーメットからなる基体（以下、これらを総称
して超硬基体と云う）には、例えばー２００Ｖのバイア
ス電圧を印加した条件で、前記超硬合金基体の表面に、
例えば特開昭６２−５６５６５号公報に記載されるよう
に、ＴｉとＡｌの複合窒化物［以下、（Ｔｉ，Ａｌ）Ｎ
で示す］で構成された硬質被覆層を２〜２０μｍの平均
層厚で蒸着することにより被覆超硬工具を製造すること
が知られている。また、これらの被覆超硬工具が、例え
ば鋼などの連続切削や断続切削に用いられることも良く
知られるところである。2. Description of the Related Art Conventionally, an arc ion plating apparatus, which is a kind of physical vapor deposition apparatus schematically shown in FIG. 3, is generally used, and the inside of the apparatus is heated to 500 mtorr, for example, by a heater. In the state heated to a temperature of ° C., the anode electrode and Ti-
An arc discharge is generated between the cathode electrode (evaporation source) on which the Al alloy is set, for example, under the conditions of a voltage: 35 V and a current: 90 A. At the same time, nitrogen gas is introduced into the apparatus as a reaction gas, while tungsten carbide is introduced. A substrate made of a base cemented carbide (hereinafter, referred to as WC) or a cermet based on titanium carbonitride (hereinafter, referred to as TiCN) (hereinafter, these are collectively referred to as a cemented carbide substrate) has a bias voltage of -200 V, for example. Under the conditions of applying, the surface of the cemented carbide substrate,
For example, as described in JP-A-62-56565, a composite nitride of Ti and Al [hereinafter, (Ti, Al) N
It is known to produce a coated superhard tool by depositing a hard coating layer constituted by the following formula] with an average layer thickness of 2 to 20 μm. It is also well known that these coated carbide tools are used for continuous cutting or interrupted cutting of steel, for example.
【０００３】[0003]
【発明が解決しようとする課題】一方、近年の切削装置
のＦＡ化はめざましく、かつ切削加工の低コスト化に対
する要求も強く、これに伴い、切削工具には使用寿命の
延命化が強く望まれているが、上記の従来被覆超硬工具
は、これらの要求に十分満足に対応できるだけの耐摩耗
性を具備するものではなく、したがってより一段と長い
使用寿命を示す被覆超硬工具の開発が望まれている。On the other hand, in recent years, the use of FA in cutting devices has been remarkable, and there has been a strong demand for lowering the cost of cutting. Accordingly, it has been strongly desired that cutting tools have a longer service life. However, the above-mentioned conventional coated carbide tools do not have sufficient wear resistance to meet these requirements, and therefore, there is a demand for the development of a coated carbide tool having a longer service life. ing.
【０００４】[0004]
【課題を解決するための手段】そこで、本発明者等は、
上述のような観点から、上記の従来被覆超硬工具を構成
する硬質被覆層に着目し、特にこれの耐摩耗性向上を図
るべく研を行った結果、 （ａ）一般に上記の従来被覆超硬工具の硬質被覆層を構
成する（Ｔｉ，Ａｌ）Ｎは、上記の通り図３に例示され
るアークイオンプレーティング装置を用い、 雰囲気圧力（真空度）：５〜３０ｍｔｏｒｒ、 雰囲気温度：３００〜７００℃、 アーク放電電流：８０〜１００Ａ、 アーク放電電圧：１０〜５０Ｖ、 基体へのバイアス電圧：−１５０〜−３００Ｖ、 とした条件で形成されていること。 （ｂ）上記（ａ）の蒸着手段で形成された（Ｔｉ，Ａ
ｌ）Ｎ層が硬質被覆層を構成する被覆超硬工具は、Ｃｕ
ｋα線を線源として用いたＸ線回折で、図２に例示され
るＸ線回折パターンを示し、図２に示される通り３５．
５〜３７．５度、４２．５〜４４．５度、および６１．
５４．５度のそれぞれの範囲内の回折角（２θ）に回折
ピークが現れるが、これらの回折ピークのうちの３５．
５〜３７．５度の範囲内の回折角（２θ）に最高回折ピ
ーク高さが現れること。 （ｃ）同じく図３に例示されるアークイオンプレーティ
ング装置において、これのカソード電極（蒸発源）にセ
ットされるＴｉ−Ａｌ合金の組成を、組成式：（Ｔｉ
1-x Ａｌx ）Ｎ（ただし、ｘは原子比で０．３〜０．７
を示す）を満足する硬質被覆層が得られる組成に特定し
た上で、上記（ａ）の蒸着条件のうち、アーク放電電流
およびバイアス電圧をいずれも上げて、それぞれ２００
〜２５０Ａおよび−３０〜−８０Ｖとし、その他の条件
は同じとした条件、すなわち、 雰囲気圧力（真空度）：５〜３０ｍｔｏｒｒ、 雰囲気温度：３００〜７００℃、 アーク放電電流：２００〜２５０Ａ、 アーク放電電圧：１０〜５０Ｖ、 基体へのバイアス電圧：−３０〜−−８０Ｖ、 とした条件で、超硬基体の表面に１〜１０μｍの平均層
厚で（Ｔｉ，Ａｌ）Ｎ層の形成を行うと、この（Ｔｉ，
Ａｌ）Ｎ層が形成された被覆超硬工具は切削加工できわ
めいすぐれた耐摩耗性を長期に亘って発揮すること。 （ｄ）上記（ｃ）の蒸着条件で形成された（Ｔｉ，Ａ
ｌ）Ｎ層を硬質被覆層とする被覆超硬工具を、上記
（ｂ）におけると同じくＣｕｋα線を線源として用いた
Ｘ線回折で観察すると、図１に例示されるＸ線回折パタ
ーンを示し、図１に示される通り硬質被覆層を構成する
（Ｔｉ，Ａｌ）Ｎは４２．５〜４４．５度の範囲内の回
折角（２θ）に最高回折ピーク高さが現れるようになる
こと。以上（ａ）〜（ｄ）に示される研究結果を得たの
である。Means for Solving the Problems Accordingly, the present inventors have
From the above-mentioned viewpoints, attention was paid to the hard coating layer constituting the above-mentioned conventional coated carbide tool, and in particular, the grinding was carried out to improve the wear resistance of the hard coating layer. (Ti, Al) N constituting the hard coating layer of the tool is obtained by using the arc ion plating apparatus illustrated in FIG. 3 as described above, the atmospheric pressure (degree of vacuum): 5 to 30 mtorr, and the atmospheric temperature: 300 to 700. C., arc discharge current: 80 to 100 A, arc discharge voltage: 10 to 50 V, bias voltage to the substrate: -150 to -300 V. (B) (Ti, A) formed by the vapor deposition means of (a) above
l) The coated carbide tool in which the N layer constitutes the hard coating layer is Cu
2 shows an X-ray diffraction pattern exemplified in FIG. 2 by X-ray diffraction using kα ray as a radiation source, and as shown in FIG.
5-37.5 degrees, 42.5-44.5 degrees, and 61.
Diffraction peaks appear at diffraction angles (2θ) within the respective ranges of 54.5 degrees, and 35.5 of these diffraction peaks.
The highest diffraction peak height appears at a diffraction angle (2θ) within the range of 5 to 37.5 degrees. (C) In the arc ion plating apparatus also illustrated in FIG. 3, the composition of the Ti—Al alloy set in the cathode electrode (evaporation source) of the apparatus is represented by a composition formula: (Ti
1-x Al x ) N (where x is an atomic ratio of 0.3 to 0.7)
Is specified, and the arc discharge current and the bias voltage are increased by 200% in each of the vapor deposition conditions (a).
~ 250 A and -30 to -80 V, and other conditions were the same, namely, atmosphere pressure (degree of vacuum): 5 to 30 mtorr, atmosphere temperature: 300 to 700 ° C, arc discharge current: 200 to 250 A, arc discharge When a (Ti, Al) N layer is formed on the surface of the super hard substrate with an average layer thickness of 1 to 10 μm under the following conditions: voltage: 10 to 50 V, bias voltage to the substrate: −30 to −80 V , This (Ti,
The coated carbide tool on which the Al) N layer is formed exhibits excellent wear resistance over a long period of time by cutting. (D) (Ti, A) formed under the vapor deposition conditions of (c) above.
1) When the coated carbide tool having the N layer as the hard coating layer is observed by X-ray diffraction using the Cukα ray as the radiation source as in (b) above, an X-ray diffraction pattern exemplified in FIG. 1 is obtained. As shown in FIG. 1, (Ti, Al) N constituting the hard coating layer has a maximum diffraction peak height at a diffraction angle (2θ) within the range of 42.5 to 44.5 degrees. The research results shown in (a) to (d) above were obtained.
【０００５】この発明は、上記の研究結果に基づいてな
されたものであって、超硬基体の表面に、アークイオン
プレーティング形成の組成式：（Ｔｉ1-x Ａｌx ）Ｎ
（ただし、ｘは原子比で０．３〜０．７を示す）を有す
る（Ｔｉ，Ａｌ）Ｎからなる硬質被覆層を１〜１０μｍ
の平均層厚で物理蒸着してなる被覆超硬工具にして、Ｃ
ｕｋα線を線源として用いた上記被覆超硬工具のＸ線回
折で、上記硬質被覆層を構成する上記（Ｔｉ，Ａｌ）Ｎ
の回折ピークのうち、４２．５〜４４．５度の範囲内の
回折角（２θ）に最高回折ピーク高さが現れるＸ線回折
パターンを示してなる、硬質被覆層がすぐれた耐摩耗性
を有する被覆超硬工具に特徴を有するものである。The present invention has been made based on the results of the above research, and has a composition formula for forming an arc ion plating on the surface of a cemented carbide substrate: (Ti 1-x Al x ) N
(Where x represents an atomic ratio of 0.3 to 0.7), a hard coating layer of (Ti, Al) N having a thickness of 1 to 10 μm.
Coated carbide tools made by physical vapor deposition with an average layer thickness of
X-ray diffraction of the coated cemented carbide tool using ukα ray as a radiation source, the (Ti, Al) N constituting the hard coating layer
The hard coating layer exhibits excellent wear resistance, which shows an X-ray diffraction pattern in which the highest diffraction peak height appears at a diffraction angle (2θ) in the range of 42.5 to 44.5 degrees among the diffraction peaks. The coated carbide tool has a feature.
【０００６】なお、この発明の被覆超硬工具において、
硬質被覆層を構成する（Ｔｉ，Ａｌ）ＮのＡｌはＴｉＣ
Ｎに対して硬さを高め、もって耐摩耗性を向上させるた
めに固溶するものであり、したがって組成式：（Ｔｉ
1-x Ａｌx ）ＮのＸ値が０．３未満では所望の耐摩耗性
を確保することができず、一方その値が０．７を越える
と、切刃に欠けやチッピングが発生し易くなると云う理
由によりＸ値を０．３〜０．７（原子比）と定めたので
ある。また、同じく硬質被覆層の平均層厚を１〜１０μ
ｍとしたのは、その層厚が１μｍ未満では所望のすぐれ
た耐摩耗性を確保することができず、一方その層厚が１
０μｍを越えると切刃に欠けやチッピングが発生し易く
なると云う理由によるものである。さらに、この発明の
被覆超硬工具に、これの使用前および使用後の識別を容
易にするために、最表面層として金色の色調を有する窒
化チタン（ＴｉＮ）層を０．１〜１μｍの平均層厚で蒸
着してもよい。[0006] In the coated carbide tool of the present invention,
Al of (Ti, Al) N constituting the hard coating layer is TiC
N to form a solid solution in order to increase the hardness with respect to N and thereby improve the wear resistance.
If the X value of 1-x Al x ) N is less than 0.3, the desired wear resistance cannot be ensured. On the other hand, if the value exceeds 0.7, chipping and chipping of the cutting edge are liable to occur. For this reason, the X value was determined to be 0.3 to 0.7 (atomic ratio). Also, the average thickness of the hard coating layer is 1 to 10 μm.
When the thickness of the layer is less than 1 μm, the desired excellent wear resistance cannot be secured, while the thickness of the layer is 1 μm.
This is because if it exceeds 0 μm, chipping and chipping of the cutting edge are likely to occur. Further, in order to facilitate the discrimination before and after use of the coated carbide tool of the present invention, a titanium nitride (TiN) layer having a golden color tone as an outermost surface layer has an average thickness of 0.1 to 1 μm. It may be deposited with a layer thickness.
【０００７】[0007]
【発明の実施の形態】ついで、この発明の被覆超硬工具
を実施例により具体的に説明する。原料粉末として、い
ずれも１〜３μｍの平均粒径を有するＷＣ粉末、ＴｉＣ
粉末、ＺｒＣ粉末、ＶＣ粉末、ＴａＣ粉末、ＮｂＣ粉
末、Ｃｒ3 Ｃ2 粉末、ＴｉＮ粉末、ＴａＮ粉末、および
Ｃｏ粉末を用意し、これら原料粉末を、表１に示される
配合組成に配合し、ボールミルで７２時間湿式混合し、
乾燥した後、１．５ｔｏｎ／ｃｍ2 の圧力で圧粉体にプ
レス成形し、この圧粉体を真空中、温度：１４００℃に
１時間保持の条件で焼結し、焼結後、切刃部分にＲ：
０．０５のホーニング加工を施してＩＳＯ規格・ＳＰＧ
Ａ１２０４０８のチップ形状をもったＷＣ基超硬合金製
の超硬基体Ａ１〜Ａ１０を形成した。また、原料粉末と
して、いずれも０．５〜２μｍの平均粒径を有するＴｉ
ＣＮ（重量比でＴｉＣ／ＴｉＮ＝５０／５０）粉末、Ｍ
ｏ2 Ｃ粉末、ＺｒＣ粉末、ＮｂＣ粉末、ＴａＣ粉末、Ｗ
Ｃ粉末、Ｃｏ粉末、およびＮｉ粉末を用意し、これら原
料粉末を、表２に示される配合組成に配合し、ボールミ
ルで２４時間湿式混合し、乾燥した後、１ｔｏｎ／ｃｍ
2 の圧力で圧粉体にプレス成形し、この圧粉体を１０ｔ
ｏｒｒの窒素雰囲気中、温度：１５４０℃に１時間保持
の条件で焼結し、焼結後、切刃部分にＲ：０．０３のホ
ーニング加工を施してＩＳＯ規格・ＳＥＫＮ１２０３Ａ
ＦＥＮ１のチップ形状をもったＴｉＣＮ系サーメット製
の超硬基体Ｂ１〜Ｂ６を形成した。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the coated carbide tool of the present invention will be specifically described with reference to examples. WC powder, TiC having an average particle diameter of 1 to 3 μm,
Powder, ZrC powder, VC powder, TaC powder, NbC powder, Cr 3 C 2 powder, TiN powder, TaN powder, and Co powder were prepared, and these raw material powders were blended in the composition shown in Table 1 to form a ball mill. For 72 hours,
After drying, it is pressed into a green compact at a pressure of 1.5 ton / cm 2 , and the green compact is sintered in a vacuum at a temperature of 1400 ° C. for 1 hour, and after sintering, the cutting edge is cut. R in part:
Honing process of 0.05 and ISO standard / SPG
Carbide substrates A1 to A10 made of a WC-based cemented carbide having a chip shape of A120408 were formed. In addition, as raw material powder, Ti having an average particle size of 0.5 to 2 μm is used.
CN (TiC / TiN = 50/50 by weight ratio) powder, M
o 2 C powder, ZrC powder, NbC powder, TaC powder, W
A C powder, a Co powder, and a Ni powder were prepared, and these raw material powders were blended in the blending composition shown in Table 2, wet-mixed in a ball mill for 24 hours, dried, and then dried at 1 ton / cm.
Press molding into a green compact at a pressure of 2
In a nitrogen atmosphere of orr, sintering is performed at a temperature of 1540 ° C. for 1 hour, and after sintering, a honing process of R: 0.03 is performed on a cutting edge portion, and ISO standard SEKN1203A is applied.
Carbide substrates B1 to B6 made of TiCN-based cermet having a chip shape of FEN1 were formed.
【０００８】ついで、これら超硬基体Ａ１〜Ａ１０およ
びＢ１〜Ｂ６を、アセトン中で超音波洗浄し、乾燥した
状態で、それぞれ第３図に例示される通常のアークイオ
ンプレーティング装置に装入し、一方カソード電極（蒸
発源）として種々の成分組成をもったＴｉ−Ａｌ合金を
装着し、装置内を排気して１×１０-5ｔｏｒｒの真空に
保持しながら、ヒーターで装置内を５００℃に加熱した
後、Ａｒガスを装置内に導入して１×１０-3ｔｏｒｒの
Ａｒ雰囲気とし、この状態で超硬基体に−８００ｖのバ
イアス電圧を印加して超硬基体表面をＡｒガスボンバー
ト洗浄し、ついで装置内に反応ガスとして窒素ガスを導
入して、それぞれ表３、４に示される反応雰囲気温度を
保持しながら、同じく表３、４に示される反応雰囲気
（真空度）とすると共に、前記超硬基体に印加するバイ
アス電圧を下げて、表３、４に示される電圧とし、かつ
アーク放電電流およびアーク放電電圧をそれぞれ同じく
表３、４に示される条件として、前記カソード電極とア
ノード電極との間にアーク放電を発生させ、もって前記
超硬基体Ａ１〜Ａ１０およびＢ１〜Ｂ６のそれぞれの表
面に、同じく表３、４に示されるＸ値および平均層厚を
もった（Ｔｉ，Ａｌ）Ｎからなる硬質被覆層を蒸着する
ことにより本発明被覆超硬工具１〜１６および従来被覆
超硬工具１〜１６をそれぞれ製造した。この結果得られ
た各種の被覆超硬工具について、その硬質被覆層表面を
Ｃｕｋα線を線源として用いたＸ線回折で観察したとこ
ろ、蒸着条件のうちのアーク放電電流およびバイアス電
圧を相対的に高くして（Ｔｉ，Ａｌ）Ｎ層を形成した本
発明被覆超硬工具１〜１６は、いずれも（Ｔｉ，Ａｌ）
Ｎの回折ピークのうち、４２．５〜４４．５度の範囲内
の回折角（２θ）に最高回折ピーク高さが現れるＸ線回
折パターンを示し、一方蒸着条件のうちのアーク放電電
流およびバイアス電圧が相対的に低い、従来蒸着条件で
（Ｔｉ，Ａｌ）Ｎ層を形成した従来被覆超硬工具１〜１
６は、いずれも（Ｔｉ，Ａｌ）Ｎの回折ピークのうち、
３５．５〜３７．５度の範囲内の回折角（２θ）に最高
回折ピーク高さが現れるＸ線回折パターンを示した。な
お、図１が本発明被覆超硬工具 のＸ線回折パターン
を示し、図２が従来被覆超硬工具 のＸ線回折パター
ンを示すものである。Next, these super-hard substrates A1 to A10 and B1 to B6 are ultrasonically cleaned in acetone, dried, and charged into a usual arc ion plating apparatus illustrated in FIG. On the other hand, Ti-Al alloys having various component compositions are mounted as a cathode electrode (evaporation source), and the inside of the apparatus is evacuated and kept at a vacuum of 1 × 10 -5 torr while the inside of the apparatus is heated to 500 ° C. Then, Ar gas was introduced into the apparatus to form an Ar atmosphere of 1 × 10 −3 torr, and in this state, a −800 V bias voltage was applied to the super hard substrate to clean the surface of the super hard substrate with an Ar gas bombardment. Then, nitrogen gas was introduced into the apparatus as a reaction gas, and while maintaining the reaction atmosphere temperature shown in Tables 3 and 4, respectively, the reaction atmosphere (degree of vacuum) shown in Tables 3 and 4 was obtained. Then, the bias voltage applied to the cemented carbide substrate is lowered to the voltages shown in Tables 3 and 4, and the arc discharge current and the arc discharge voltage are also set to the conditions shown in Tables 3 and 4, respectively, under the conditions shown in Tables 3 and 4. An arc discharge was generated between the anode and the anode electrode, and the surface of each of the cemented carbide substrates A1 to A10 and B1 to B6 had the X value and average layer thickness shown in Tables 3 and 4 (Ti, The coated superhard tools 1 to 16 of the present invention and the conventionally coated superhard tools 1 to 16 were produced by depositing a hard coating layer made of Al) N. When the surface of the hard coating layer of each of the coated carbide tools obtained as a result was observed by X-ray diffraction using a Cukα ray as a radiation source, the arc discharge current and the bias voltage among the deposition conditions were relatively determined. Each of the coated carbide tools 1 to 16 of the present invention in which the (Ti, Al) N layer was formed by raising the height was (Ti, Al).
7 shows an X-ray diffraction pattern in which the highest diffraction peak height appears at a diffraction angle (2θ) within the range of 42.5 to 44.5 degrees among the diffraction peaks of N, while the arc discharge current and the bias among the deposition conditions are shown. Conventional coated carbide tools 1 to 1 having a (Ti, Al) N layer formed under conventional deposition conditions with relatively low voltage
6 is a diffraction peak of (Ti, Al) N
The X-ray diffraction pattern showed the highest diffraction peak height at a diffraction angle (2θ) within the range of 35.5 to 37.5 degrees. FIG. 1 shows the X-ray diffraction pattern of the coated carbide tool of the present invention, and FIG. 2 shows the X-ray diffraction pattern of the conventionally coated carbide tool.
【０００９】つぎに、この結果得られた本発明被覆超硬
工具１〜１０および従来被覆超硬工具１〜１０について
は、 被削材：ＳＣＭ４４０（硬さ：ＨB ２２０）の角材、 切削速度：１２０ｍ／ｍｉｎ．、 切込み：２．５ｍｍ、 送り：０．２５ｍｍ／刃、 の条件での合金鋼の乾式断続切削（フライス切削）試験
を行ない、また本発明被覆超硬工具１１〜１６および従
来被覆超硬工具１１〜１６については、 被削材：ＳＮＣＭ４４０（硬さ：ＨB ２２０）の角材、 切削速度：３００ｍ／ｍｉｎ．、 切込み：２ｍｍ．、 送り：０．１５ｍｍ／刃、 の条件での合金鋼の乾式断続切削（フライス切削）試験
を行い、いずれの切削試験でも切刃の逃げ面摩耗幅が
０．２ｍｍに至るまでの切削時間を測定した。これらの
測定結果を表３、４に示した。Next, the resulting coated carbide tools 1 to 10 of the present invention and the conventional coated carbide tools 1 to 10 obtained as described above are as follows: work material: square material of SCM440 (hardness: HB 220); cutting speed: 120 m / min. , Depth of cut: 2.5 mm, feed: 0.25 mm / tooth, a dry interrupted cutting (milling) test of alloy steel was performed, and the coated carbide tools 11 to 16 of the present invention and the conventionally coated carbide tools 11 -16: work material: square material of SNCM440 (hardness: HB 220), cutting speed: 300 m / min. , Depth of cut: 2 mm. , Feed: 0.15 mm / tooth, a dry intermittent cutting (milling) test of alloy steel was performed under the following conditions. In any cutting test, the cutting time until the flank wear width of the cutting edge reached 0.2 mm was determined. It was measured. Tables 3 and 4 show the measurement results.
【００１０】[0010]
【表１】 [Table 1]
【００１１】[0011]
【表２】 [Table 2]
【００１２】[0012]
【表３】 [Table 3]
【００１３】[0013]
【表４】 [Table 4]
【００１４】[0014]
【発明の効果】表３、４に示される結果から、本発明被
覆超硬工具１〜１６は、いずれも従来被覆超硬工具１〜
１６に比してすぐれた耐摩耗性を発揮し、長い使用寿命
を示すことが明らかである。上述のように、この発明の
被覆超硬工具は、この種の従来被覆超硬工具に比して長
い使用寿命を示すので、切削装置のＦＡ化および切削加
工の低コスト化に十分満足に対応することができるもの
である。According to the results shown in Tables 3 and 4, all of the coated carbide tools 1 to 16 of the present invention are the same as those of the conventional coated carbide tools 1 to 16.
It is clear that it exhibits excellent wear resistance as compared with No. 16 and has a long service life. As described above, the coated carbide tool of the present invention has a longer service life than this type of conventional coated carbide tool, and therefore sufficiently satisfies the use of FA in a cutting device and a reduction in the cost of cutting. Is what you can do.
【図１】本発明被覆超硬工具 のＸ線回折パターンを
示す図である。FIG. 1 is a view showing an X-ray diffraction pattern of a coated carbide tool of the present invention.
【図２】従来被覆超硬工具 のＸ線回折パターンを示
す図である。FIG. 2 is a view showing an X-ray diffraction pattern of a conventional coated carbide tool.
【図３】アークイオンプレーティング装置の概略説明図
である。FIG. 3 is a schematic explanatory view of an arc ion plating apparatus.
Claims (1)
炭窒化チタン系サーメット基体の表面に、アークイオン
プレーティング形成の組成式：（Ｔｉ1-x Ａｌx ）Ｎ
（ただし、ｘは原子比で０．３〜０．７を示す）を有す
るＴｉとＡｌの複合窒化物からなる硬質被覆層を１〜１
０μｍの平均層厚で物理蒸着してなる表面被覆超硬合金
製切削工具にして、Ｃｕｋα線を線源として用いた上記
表面被覆超硬合金製切削工具のＸ線回折で、上記硬質被
覆層を構成する上記ＴｉとＡｌの複合窒化物の回折ピー
クのうち、４２．５〜４４．５度の範囲内の回折角（２
θ）に最高回折ピーク高さが現れるＸ線回折パターンを
示すことを特徴とする硬質被覆層がすぐれた耐摩耗性を
有する表面被覆超硬合金製切削工具。1. A composition formula for forming an arc ion plating on the surface of a tungsten carbide-based cemented carbide substrate or a titanium carbonitride-based cermet substrate: (Ti 1-x Al x ) N
(Where x represents an atomic ratio of 0.3 to 0.7), a hard coating layer made of a composite nitride of Ti and Al having a thickness of 1 to 1
A surface-coated cemented carbide cutting tool formed by physical vapor deposition with an average layer thickness of 0 μm, and the hard-coated layer was subjected to X-ray diffraction of the surface-coated cemented carbide cutting tool using a Cukα ray as a radiation source. Of the diffraction peaks of the composite nitride of Ti and Al constituting the above, the diffraction angle (22.5 to 44.5 degrees)
A cutting tool made of a surface-coated cemented carbide having a hard coating layer with excellent wear resistance, which shows an X-ray diffraction pattern in which the highest diffraction peak height appears at θ).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15231497A JP3536593B2 (en) | 1997-06-10 | 1997-06-10 | Surface coated cemented carbide cutting tool with excellent wear resistance with hard coating layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15231497A JP3536593B2 (en) | 1997-06-10 | 1997-06-10 | Surface coated cemented carbide cutting tool with excellent wear resistance with hard coating layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH111762A true JPH111762A (en) | 1999-01-06 |
| JP3536593B2 JP3536593B2 (en) | 2004-06-14 |
Family
ID=15537823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15231497A Expired - Fee Related JP3536593B2 (en) | 1997-06-10 | 1997-06-10 | Surface coated cemented carbide cutting tool with excellent wear resistance with hard coating layer |
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| Country | Link |
|---|---|
| JP (1) | JP3536593B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002537133A (en) * | 1999-02-17 | 2002-11-05 | ユナキス・バルツェルス・アクチェンゲゼルシャフト | Protective coating method for cutting tools and tool sets |
| JP2006181653A (en) * | 2004-12-27 | 2006-07-13 | Mitsubishi Materials Corp | Surface coated thermet-made cutting tool having hard coating layer exhibiting excellent chipping resistance in intermittent heavy cutting |
| JP2006181654A (en) * | 2004-12-27 | 2006-07-13 | Mitsubishi Materials Corp | Surface coated cubic boron nitride-base sintered material-made cutting tool having hard coating layer exhibiting excellent chipping resistance in intermittent heavy cutting for high-hardness steel |
-
1997
- 1997-06-10 JP JP15231497A patent/JP3536593B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002537133A (en) * | 1999-02-17 | 2002-11-05 | ユナキス・バルツェルス・アクチェンゲゼルシャフト | Protective coating method for cutting tools and tool sets |
| JP2010179458A (en) * | 1999-02-17 | 2010-08-19 | Oerlikon Trading Ag Truebbach | Process for protective coating of machining tool and tool set |
| JP2006181653A (en) * | 2004-12-27 | 2006-07-13 | Mitsubishi Materials Corp | Surface coated thermet-made cutting tool having hard coating layer exhibiting excellent chipping resistance in intermittent heavy cutting |
| JP2006181654A (en) * | 2004-12-27 | 2006-07-13 | Mitsubishi Materials Corp | Surface coated cubic boron nitride-base sintered material-made cutting tool having hard coating layer exhibiting excellent chipping resistance in intermittent heavy cutting for high-hardness steel |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3536593B2 (en) | 2004-06-14 |
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