【発明の詳細な説明】この発明は、鋼および鋳鉄の切削、特に高速切削や高送
り切削などの苛酷な条件下での切削に際して、すぐれた
切削性能を発揮する切削工具用表面被覆焼結合金部材に
関するものである。Detailed Description of the Invention The present invention provides a surface-coated sintered alloy for cutting tools that exhibits excellent cutting performance when cutting steel and cast iron, especially when cutting under harsh conditions such as high-speed cutting and high-feed cutting. It is related to members.
一般に、炭化タングステン（以下ＷＣで示す）または炭
化チタンＣ以下ＴｉＣで示す）ｆ：：主成分とし、結合
相形成成分として、鉄族金属（Ｆｅ、Ｎｉ。In general, tungsten carbide (hereinafter referred to as WC) or titanium carbide (hereinafter referred to as TiC) is used as the main component, and iron group metals (Fe, Ni) are used as the binder phase forming component.
Ｃｏ）のうちの１種または２種以上、あるいは鉄族金属
のうちの１種または２種以上と、クロム族金属（Ｃｒ、
Ｍｏ、 Ｗ ）およびＡｌのうちの１種または２種以
上とを含有し、さらに必要に応じて、硬質分散形成成分
として、元素周期律表の４ａ、５ａ。Co) or one or more iron group metals and chromium group metals (Cr,
4a and 5a of the periodic table of elements as a hard dispersion forming component, if necessary.
および６ａ族金属の炭化物、窒化物、および炭窒化物の
うちの１種または２種以上を含有したＷＣ基超硬焼結合
金またはＴｉＣ基焼結サーメットからなる基体の表面に
、、同じく元素周期律表の４ａ族金属（Ｔｉ 、 Ｚｒ
、 Ｈｆ ）の炭化物、窒化物、および酸化物、並びに
これらの２種以上の固溶体からなる群のうちの１種の単
層または２種以上の複層からなる被覆層を化学蒸着法な
どにより形成してなる表面被覆焼結合金部月が切削工具
として用いられていることはよく知られるところである
。And on the surface of a base made of WC-based cemented carbide sintered alloy or TiC-based sintered cermet containing one or more of group 6a metal carbides, nitrides, and carbonitrides, Group 4a metals (Ti, Zr
, Hf ) carbides, nitrides, and oxides, and solid solutions of two or more of these, forming a coating layer consisting of a single layer or a multilayer of two or more of these by chemical vapor deposition or the like. It is well known that surface-coated sintered alloy parts made of these materials are used as cutting tools.
しかしながら、これらの従来切削工具用表面被覆焼結合
金部材においては、被削月が鋼の場合にはすぐれた切削
寿命を示すが、被削材が鋳鉄になると短かい切削寿命し
か示さないものや、これとは反対に鋳鉄の切削には長い
切削寿命を示すが、鋼の切削でｉ短かい切削寿命しか示
さないものがほとんどで、鋼および鋳鉄のいずれの切削
においても満足する切削寿命を示すものは存在せず、ま
してや、これら両被削拐の高速切削および高送り切削な
どの苛酷な条件下ての切削に際して満足な切削性能全発
揮するものは皆無であるのが現状である。However, these conventional surface-coated sintered alloy members for cutting tools show excellent cutting life when the workpiece is steel, but only short cutting life when the workpiece material is cast iron. , on the contrary, shows a long cutting life when cutting cast iron, but most of them show only a short cutting life when cutting steel, and show a satisfactory cutting life when cutting both steel and cast iron. Currently, there is no such thing in existence, and even more so, there is no one that can fully exhibit satisfactory cutting performance when cutting under severe conditions such as high-speed cutting and high-feed cutting for both of these types of workpieces.
そこで、本発明者等は、上述のような観点から鋼および
鋳鉄の両方の切削に用いることができることは勿論のこ
と、これら両被削拐の高速切削および高送り切削も可能
な切削工具を開発すべく研究を行なった結果、基体がｗ
ｃ基超硬焼結合金またはＴｉＣ基焼結ザーメットで構成
され、被覆層が０．５〜２０μｍの平均層厚を有し、か
つ周期律表の４ａ族金属の炭化物、窒化物、および酸化
物、並びにこれらの２種以上の固溶体からなる群のうち
の１種の単層または２種以上の複層（以下、これらを総
称して中間被覆層という）で構成された上記従来表面被
覆焼結合金部材の表面に、さらにＳｉとＡｇ、の複合炭
酸窒化物〔以下、（Ｓｉ、 ＡＱ ） ＣＯＮ テ示す
〕からなる被覆層（以下、表面被覆層という）を０．５
〜２０μｍの平均層厚で被覆すると、この結果の表面被
覆層および中間被覆層を有する表面被覆焼結合金部相に
おいては、ｎｒｊ記中間被覆層が前記基体および前記表
面被覆層と強固に結合すると共に、前記表面被覆層が、
高い常温および高温硬さ、高靭性、並びにすぐれた耐摩
耗性および耐酸化性、さらに高温での化学的安定性をも
つことから、これを鋼および鋳鉄の切削に切削工具とし
て使用した場合に、は、いずれの被削拐の切削において
もすぐれた切削寿命を示し、特にこれら両波削材の高速
切削および高送り切削においてもきわめてすぐれた切削
性能を発揮するという知見を得たのである。Therefore, from the above-mentioned viewpoint, the present inventors developed a cutting tool that can not only be used for cutting both steel and cast iron, but also capable of high-speed cutting and high-feed cutting of both materials. As a result of conducting research to find out, the base material is w.
Composed of C-based cemented carbide sintered alloy or TiC-based sintered cermet, the coating layer has an average layer thickness of 0.5 to 20 μm, and carbides, nitrides, and oxides of group 4a metals of the periodic table. , and the above-mentioned conventional surface-coated sintered bond composed of a single layer of one type or a multilayer of two or more types from the group consisting of two or more types of solid solutions (hereinafter, these are collectively referred to as intermediate coating layers). On the surface of the gold member, a coating layer (hereinafter referred to as surface coating layer) consisting of a composite carbonate nitride of Si and Ag (hereinafter referred to as (Si, AQ) CON) is further applied by 0.5%.
When coated with an average layer thickness of ~20 μm, in the resulting surface-coated sintered alloy part having a surface coating layer and an intermediate coating layer, the intermediate coating layer is strongly bonded to the substrate and the surface coating layer. In addition, the surface coating layer is
Due to its high room temperature and high temperature hardness, high toughness, excellent wear resistance and oxidation resistance, and chemical stability at high temperatures, it can be used as a cutting tool for cutting steel and cast iron. It has been found that this material exhibits excellent cutting life in cutting any type of workpiece, and in particular, exhibits extremely excellent cutting performance in high-speed cutting and high-feed cutting of these corrugated materials.
この発明は、上記知見にもとづいてなされたものである
が、中間被覆層および表面被覆層の平均層厚をそれぞれ
０．５〜２０μｍと限定したのは。This invention was made based on the above findings, and the reason is that the average layer thicknesses of the intermediate coating layer and the surface coating layer are each limited to 0.5 to 20 μm.
中間被覆層については、その平均層厚が０．５μｍ未満
では所望の強固な接合強度を確保することができず、ま
た表面被覆層については、その平均層厚が０．５μｍ未
満では、所望のすぐれた切削性能を長期に亘って確保す
ることができず、一方中間被覆層および表面被覆層のい
ずれにおいても、その平均層厚が２０μｍを越えると、
被覆処理時間が長いことに原因して、結晶粒が粗大化し
、この結果靭性が低下するばかりでなく１表面が荒れて
凹凸が激しくなるという理由からである。For the intermediate coating layer, if the average layer thickness is less than 0.5 μm, the desired strong bonding strength cannot be secured, and for the surface coating layer, if the average layer thickness is less than 0.5 μm, the desired strong bonding strength cannot be secured. Excellent cutting performance cannot be ensured over a long period of time, and on the other hand, if the average layer thickness of both the intermediate coating layer and the surface coating layer exceeds 20 μm,
This is because the long coating treatment time causes the crystal grains to become coarse, which not only reduces toughness but also makes the surface rough and rough.
つぎに、この発明の表面被覆焼結合金部拐を実施例によ
り具体的に説明する。Next, the surface-coated sintered alloy part of the present invention will be specifically explained using examples.
実施例 ｌｌ５Ｏ規格ｐ２０グレード（重量％ｆ、ＴｉＣ：１０％
、 ＴａＣ： ４ ％ 、 Ｃｏ ： １１％、 ｗ
ｃ ：残りの組成を有するＷＣ基超硬焼結合金）の切削
チップを、耐熱合金製反応容器内に装入し、まず、Ｔｉ
Ｃｔ４：２ ％、 ＣＨ４： ２ ％、 Ｈ２：９６
％からなる組成を有する反応混合ガスｆ ’ ｌ Ｑ
ｔ／ｍｌｎの流速で流しながら。Example l l5O standard p20 grade (weight % f, TiC: 10%
, TaC: 4%, Co: 11%, w
c: Cutting chips of WC-based cemented carbide sintered alloy having the remaining composition were charged into a heat-resistant alloy reaction vessel, and first, Ti
Ct4: 2%, CH4: 2%, H2: 96
% of the reaction mixture f' l Q
While flowing at a flow rate of t/mln.
５０ ｔｏｒｒの減圧下で温度：１０５０℃に２時間保
持の条件で化学蒸着処理を行なって、前記切削チップ表
面に炭化チタン（以下ＴｉＣで示す）の中間被覆層を形
成し、ついでＨ２ガスｆ １０１／ｍ１ｎ（Ｄ 流速で
３分間流して前記反応容器内の残留ガスを完全に除去し
、引続イテ、ＣＨ３・５ｉＣ７ａ ： １．５ ％ 、
Ａ２Ｃｌ３：２．０係、ＮＨ３：３．０係、ＣＯ２：
２．Ｏ係、Ｈ２：９１．５％からなる組成Ｃ以上容量係
、以下係の表示はすべて容量係を示す）を有する反応混
合ガスを、同じ（ｌ Ｑ ｔ／ｙｍｎの流速で流しなが
ら、７０ ｔｏｒｒの減圧下で温度： １０００℃Ｖｔ
Ｃ１時間保持の条件で化学蒸着処理を行なって、ｉＱ記
中間被覆層の上に表面被覆層を形成することによって本
発明表面被覆焼結合金切削チップ（以下本発明被覆切削
チップという）■を製造した。A chemical vapor deposition process was performed under a reduced pressure of 50 torr and maintained at a temperature of 1050° C. for 2 hours to form an intermediate coating layer of titanium carbide (hereinafter referred to as TiC) on the surface of the cutting tip, and then H2 gas f101 was applied. /m1n (D) to completely remove residual gas in the reaction vessel by flowing at a flow rate of 3 minutes.
A2Cl3: 2.0 part, NH3: 3.0 part, CO2:
2. A reaction mixture gas having a composition C consisting of 91.5% and 91.5% of H2 is supplied at a flow rate of 70 torr. Temperature under reduced pressure: 1000℃Vt
The surface-coated sintered alloy cutting tip of the present invention (hereinafter referred to as the coated cutting tip of the present invention) is manufactured by performing chemical vapor deposition treatment under conditions of holding for C1 hour to form a surface coating layer on the intermediate coating layer described in iQ. did.
この結果得られた本発明被覆切削チップ１は、中間被覆
層平均層厚＝５μｍ、表面被覆層平均層厚＝２μｍを有
し、かつこれら両層の中間には０５〜２μｍの層厚で相
互拡散層が形成されてお９＆さらに前記表面被覆層は１
組成式： Ｓ ｉ Ｏ，３０Ａｅｏ２゜Ｃ０，１０００
，１５Ｎ０．２５を有する非結晶状固体相からなるもの
であった。The coated cutting tip 1 of the present invention obtained as a result has an average layer thickness of the intermediate coating layer = 5 μm, an average layer thickness of the surface coating layer = 2 μm, and a layer thickness of 0.5 to 2 μm between these two layers. A diffusion layer is formed 9 & further the surface coating layer is 1
Composition formula: S i O, 30Aeo2゜C0,1000
, 15N0.25.
実施例 ２中間被覆層１Ｔｉｃ層と炭酸化チタイ（以下ＴｉＣ０で
示す）層で構成し、この場合のＴｉＣ層形成のための化
学蒸着処理条件を、反応混合ガス組成；ＴｉＣｌ４：
２ａＩＩ、 ＣＨ４： ２％、 Ｈ２：９６ ％、反応
混合ガスの流速：１０ｔ／＋＋＋ｒｎ、反応温度： １
０００℃。Example 2 Intermediate coating layer 1 was composed of a Tic layer and a carbonated titanium (hereinafter referred to as TiC0) layer, and the chemical vapor deposition treatment conditions for forming the TiC layer in this case were as follows: reaction mixture gas composition: TiCl4:
2aII, CH4: 2%, H2: 96%, flow rate of reaction mixture gas: 10t/+++rn, reaction temperature: 1
000℃.
真空度： ６０ ｔｏｒｒ 、反応時間：１時間とし、
またＴｉＣ０層形成のための化学蒸着処理条件を、反応
混合ガス組成： ＴｉＣｌ４ ： ２％、 ｃｏ： １
チ、 ｃｏ２：０．５係、 Ｈ２： ９６．５係１反応
混合ガスの流速：ｉ ｏ ｔ／＝ｎ 、反応温度：９０
０℃、真空度Ｈ５Ｑｔｏｒｒ。Vacuum degree: 60 torr, reaction time: 1 hour,
In addition, the chemical vapor deposition processing conditions for forming the TiC0 layer are as follows: reaction mixture gas composition: TiCl4: 2%, co: 1
H, co2: 0.5 factor, H2: 96.5 factor, flow rate of 1 reaction mixed gas: i o t/=n, reaction temperature: 90
0°C, vacuum level H5Qtorr.
反応時間：４時間とする以外は、上記実施例１Ｖ−。Example 1V- above, except that reaction time: 4 hours.
おけると同一の条件にて本発明被覆切削チップ２を製造
した。The coated cutting tip 2 of the present invention was manufactured under the same conditions as those used in the test.
この結束得られた本発明被包切削チップ２は、それぞれ
の平均層厚が、ＴｉＣの中間被覆層：２μｍ。The bundled cutting tips 2 of the present invention each have an average layer thickness of 2 μm as the intermediate coating layer of TiC.
組成式： Ｔｉｃｍ、６０ｏ４を有する中間被覆層二８
μｍ。Intermediate coating layer 28 with composition formula: Ticm, 60o4
μm.
および同じく組成式： Ｓｉ ｏ３ｏＡＡｏ、ｚｏＣｏ
ｔｏＯｏ、＋ｓＮｏ、ｚｓ ’ｆｒ：有する表面被覆層
＝ ２μｍを有するものであった。And the same compositional formula: Si o3oAAo, zoCo
toOo, +sNo, zs'fr: surface coating layer = 2 μm.
実施例 ３表面被覆層形成のための化学蒸着処理条件を、反応混合
ガス組成１ｃＨ３・５ｉＣＡ４： １０係、 ＡｉｔＣ
ｔ３：３％、ＮＨ３：３％、ＣＯ２：２％、 Ｈ２：９
１％、反応混合ガスの流速： ｌ Ｏｔ／ｍｔｎ 、反
応温度：９５０℃。Example 3 The chemical vapor deposition treatment conditions for forming the surface coating layer were as follows: Reaction mixture gas composition: 1cH3・5iCA4: 10 parts, AitC
t3: 3%, NH3: 3%, CO2: 2%, H2: 9
1%, reaction mixture gas flow rate: 1 Ot/mtn, reaction temperature: 950°C.
真空度： ７０ ｔｏｒｒ、反応時間：１時間とする以
外は、実施例１におけると同一の条件にて本発明被覆切
削チップ３を製造した。The coated cutting tip 3 of the present invention was manufactured under the same conditions as in Example 1 except that the degree of vacuum was 70 torr and the reaction time was 1 hour.
この結果の本発明被覆切削チップ３は、ＴｉＣの中間被
覆層平均層厚： ５μｍ９表面被覆層平均層厚＝１．５
μｍを有し、かつ表面被覆層は、組成式： ｓ’０．１
ｓＡ”０．３５ｃＯ，１０ｏＯ，１５ＮＯ，２５ｋ有す
る非結晶状固体相からなるものであった。The resulting coated cutting tip 3 of the present invention has a TiC intermediate coating layer average layer thickness: 5 μm9 Surface coating layer average layer thickness = 1.5
μm, and the surface coating layer has a composition formula: s'0.1
It consisted of an amorphous solid phase with sA'' of 0.35cO, 10oO, 15NO, 25k.
実施例 ４表面被覆層形成のための化学蒸着処理条件を、反応混合
ガス組成；ＣＨ３・５ＩＣ１３： ０．３係。Example 4 Chemical vapor deposition treatment conditions for forming a surface coating layer were as follows: reaction mixture gas composition: CH3.5IC13: 0.3.
ＭＣ１３： ２係、ＮＨ３：３係、ＣＯ２：１係、 Ｈ
２： ９３．７係。MC13: Section 2, NH3: Section 3, CO2: Section 1, H
2: 93.7 Section.
反応混合ガスの流速： ８ ｔ／−ｒｒｎ、反応温度：
１０００℃。Flow rate of reaction mixture gas: 8 t/-rrn, reaction temperature:
1000℃.
真空度： ７０ ｔｏｒｒ、反応時間：１時間とする以
外は、実施例１におけると同一の条件にて本発明ヤ覆切
削チップ４を製造した。The coated cutting tip 4 of the present invention was manufactured under the same conditions as in Example 1 except that the degree of vacuum was 70 torr and the reaction time was 1 hour.
この結果得られた本発明被覆切削チップ４は、ＴｉＣの
中間被覆層平均層厚＝５μｍ１５μｍ１表面被覆厚：１
５μｍを有し、かつ表面被覆層は、組成式： Ｓｉ ｏ
、ｏｅＡＡｏ４ｓ Ｃ０，１５００，０５Ｎ０．２９
’（ｉ：有する非結晶状固体相からなるものであった。The coated cutting tip 4 of the present invention obtained as a result has a TiC intermediate coating layer average layer thickness of 5 μm, 15 μm, surface coating thickness of 1
5 μm, and the surface coating layer has a compositional formula: Si o
,oeAAo4s C0,1500,05N0.29
'(i: Consisting of an amorphous solid phase with
実施例 ５中間被覆層を窒化チタンＣ以下ＴｉＮで示す）で構成し
、かつこの中間被覆層形成のための化学蒸着処理条件を
、反応混合ガス組成； ＴｉＣｌ４： ２％。Example 5 The intermediate coating layer was composed of titanium nitride C (hereinafter referred to as TiN), and the chemical vapor deposition treatment conditions for forming the intermediate coating layer were as follows: Reaction mixture gas composition: TiCl4: 2%.
Ｎ２：２０係、Ｈ２ニア８係９反応混合ガスの流速：１
０７／ｍｉｎ、反応温度：９５０℃、真空度ニアＱｔｏ
ｒｒ。N2: 20 parts, H2 near 8 parts 9 Flow rate of reaction mixed gas: 1
07/min, reaction temperature: 950°C, degree of vacuum near Qto
rr.
反応時間：１時間とし、また表面被覆層形成のための化
学蒸着処理条件を、反応混合ガス組成：ＣＨ３・ＳｉＣ
／！４ ： １．４ ％ 、 ＡｕＣｌ３：０．６ ％
、 ＮＨ３：３．０係、ＣＯ２：１．０係、 Ｈ２：
９４．０係９反応混合ガスの流速： ９ ｔ／−７ｎ
、反応温度： １０００℃、真空度： ７０ ｔｏｒｒ
、反応時間＝４５分とする以外は、実施例１におけると
同一の条件にて本発明被覆切削チップ５を製造した。The reaction time was 1 hour, and the chemical vapor deposition treatment conditions for forming the surface coating layer were as follows: Reaction mixture gas composition: CH3/SiC
/! 4: 1.4%, AuCl3: 0.6%
, NH3: 3.0 part, CO2: 1.0 part, H2:
94.0 Coefficient 9 Flow rate of reaction mixture gas: 9 t/-7n
, reaction temperature: 1000°C, degree of vacuum: 70 torr
The coated cutting tip 5 of the present invention was manufactured under the same conditions as in Example 1 except that the reaction time was 45 minutes.
この結果得られた本発明被覆切削チップ５は、ＴｉＮの
中間被覆層平均層厚＝ ２μｍ１表面被覆層平均層厚：
１．５μｍを有し、かつ表面被覆層は、組成式’Ｓｉｏ
、ｓｓＡε０．０７ＣＯ，１１００，０６Ｎ０．２１を
有する非結晶状固体相からなるものであった。The coated cutting tip 5 of the present invention obtained as a result has an average layer thickness of the TiN intermediate coating layer=2 μm1 average layer thickness of the surface coating layer:
1.5 μm, and the surface coating layer has the composition formula 'Sio
, ssAε0.07CO,1100,06N0.21.
実施例 ６中間被覆層を炭窒化チタン（以下Ｔ１ＣＮで示す）で構
成し、かつＴ１ＣＮの中間被覆層形成のだめの化学蒸着
処理条件を、反応混合ガス組成；ＴｌＣ１４：２ ％、
Ｎ２ ：２０係、ＣＨ３：２％、Ｈ２ニア６係１反応
混合ガスの流速：１０ｔ／−＋＃、反応温度：９５０℃
。Example 6 The intermediate coating layer was composed of titanium carbonitride (hereinafter referred to as T1CN), and the chemical vapor deposition treatment conditions for forming the intermediate coating layer of T1CN were as follows: reaction mixture gas composition: TlC 14:2%;
N2: 20 parts, CH3: 2%, H2 near 6 parts 1 Reaction mixed gas flow rate: 10t/-+#, reaction temperature: 950°C
.
真空度： ７０ ｔｏｒｒ 、反応時間：１時間とし、
また表面被覆層形成のだめの化学蒸着処理条件を、反応
混合ガス組成：ＣＨ３・５ＩＣｔ３：２係、 Ａ１．Ｃ
１３： ２％。Vacuum degree: 70 torr, reaction time: 1 hour,
In addition, the chemical vapor deposition treatment conditions for forming the surface coating layer were as follows: reaction mixture gas composition: CH3.5ICt3:2, A1. C
13: 2%.
ＮＨ３：１％、Ｃｏ２：２係、Ｈ２：９３係９反応混合
ガスの流速：ｌＱｔ／ｍｉｎ、反応温度： １０００℃
、真空度： ７０ ｔｏｒｒ 、反応時間：１時間とす
る以外は、実施例１におけると同一の条件にて本発明被
覆切削チップ６を製造した。NH3: 1%, Co2: 2 parts, H2: 93 parts 9 Flow rate of reaction mixed gas: lQt/min, reaction temperature: 1000°C
The coated cutting tip 6 of the present invention was manufactured under the same conditions as in Example 1 except that the degree of vacuum was 70 torr and the reaction time was 1 hour.
この結果得られた本発明被覆切削チップ６は。The resulting coated cutting tip 6 of the present invention is as follows.
中間被覆層平均層厚：５μｍ１表面被覆層平均層厚：２
μｍを有し、かつ中間被覆層は組成式：Ｔ ｉ ＣＯ，
３Ｎｏ、７を有し、また表面被覆層は組成式：Ｓｉ ｏ
４Ａｔｉｏ、ｔ ＣＯ３００，ＩＮｏ、１ ｋ：有する
非結晶状固体相からなるものであった。Intermediate coating layer average layer thickness: 5 μm1 Surface coating layer average layer thickness: 2
μm, and the intermediate coating layer has a compositional formula: T i CO,
3 No. 7, and the surface coating layer has a composition formula: Si o
It consisted of an amorphous solid phase with 4Atio, tCO300, INo, 1k:.
実施例 ７中間被覆層を炭化ジルコニウム（以下ＺｒＣて示す）で
構成し、かつＺｒＣの中間被覆層形成のための化学蒸着
処理条件を、反応混合ガス組成ｔ Ｚ ｒＣｌ ４：２
係、、ＣＨ４：２係、Ｈ２：９６％９反応混合ガスの流
速：ｌＯｔ／ｍｉｎ、反応温度： １０００℃、真空度
： ７ Ｑ ｔｏｒｒ、反応時間：２時間とし、また表
面被覆層形成のための化学蒸着処理条件は実施例３にお
けると同一の条件とする以外は、実施例１におけると同
一の条件［’ｌ：：て本発明被覆切削チップ７全製造し
た。Example 7 The intermediate coating layer was composed of zirconium carbide (hereinafter referred to as ZrC), and the chemical vapor deposition treatment conditions for forming the intermediate coating layer of ZrC were as follows: reaction mixture gas composition t Z rCl 4:2
, CH4: 2 parts, H2: 96% 9 Flow rate of reaction mixed gas: 10t/min, reaction temperature: 1000°C, degree of vacuum: 7 Q torr, reaction time: 2 hours, and for forming a surface coating layer. All of the coated cutting tips 7 of the present invention were manufactured under the same conditions as in Example 1, except that the chemical vapor deposition treatment conditions were the same as in Example 3.
この結果の本発明被覆切削チップ７は、ＺｒＣの中間被
覆層の平均層厚が５μｍであり、一方表面被覆層は実施
例３におけると同じ組成式：％式％：中間被覆層を窒化ハフニウム（以下ＨｆＮで示す）で構
成し、かつＨｆＮの中間層形成のための化学蒸着処理条
件凱反応混合ガス組成ｔ ＨｆＣ７４： ３％。The resulting coated cutting tip 7 of the present invention has an intermediate coating layer of ZrC with an average layer thickness of 5 μm, while a surface coating layer has the same compositional formula as in Example 3: Hafnium nitride ( Chemical vapor deposition treatment conditions for forming an intermediate layer of HfN (hereinafter referred to as HfN), reaction mixture gas composition t HfC74: 3%.
Ｎ２ ： ２０％、 Ｈ２： ７７％９反応混合カ、ｚ
、ｏ流速：１゜ｔ／開開度反応温度 １０００℃、
真空度： ７ Ｑ ｔｏｒｒ。N2: 20%, H2: 77%9 Reaction mixture, z
, o Flow rate: 1°t/opening degree reaction temperature 1000°C,
Vacuum level: 7 Q torr.
反応時間：２時間とし、一方、表面ｉ覆層形成のための
化学蒸着処理条件は実施例５におけると同一の条件とす
る以外は、実施例１におけると同一の条件にて本発明被
覆切削チップ８を製造した。The present invention coated cutting tip was prepared under the same conditions as in Example 1, except that the reaction time was 2 hours, and the chemical vapor deposition treatment conditions for forming the surface i-covering layer were the same as in Example 5. 8 was manufactured.
この結果の本発明被覆切削チップ８ｉ−ｊ、ＨｆＮの中
間被覆層の平均層厚が５μｍであり、かつ表面被覆層は
実施例５におけると同一の組成式：％式％：２切削チップの材質を、重量係で、Ｎｉ：１７％。As a result, the average layer thickness of the HfN intermediate coating layer of the coated cutting tips 8i-j of the present invention was 5 μm, and the surface coating layer had the same compositional formula as in Example 5: % Formula %: 2 Material of the cutting tip By weight, Ni: 17%.
Ｍｏ：８％、Ｔｉｃおよび不可避不純物：残りからなる
組成を有するＴｉＣ基焼結サーメットとする以外は、実
施例１におけると同一の条件で、本発明被覆切削チップ
９を製造した。A coated cutting tip 9 of the present invention was manufactured under the same conditions as in Example 1, except that a TiC-based sintered cermet having a composition consisting of Mo: 8%, Tic, and the remainder of unavoidable impurities was used.
この結果の本発明被覆切削チップ９は１本発明被覆切削
チップ１と同様に、ＴｉＣの中間被覆層の平均層厚が５
μｍであり１表面被覆層が組成式゛：５１０３０Ｖ０．
２０ｃＯ，ｌ０ｏＯ，１４ＮＯ，２５ｋ有する平均層厚
：２ノ１ ｍのものてあった。The resulting coated cutting tip 9 of the present invention is similar to the coated cutting tip 1 of the present invention, in which the average layer thickness of the TiC intermediate coating layer is 5.
μm, and one surface coating layer has a composition formula: 51030V0.
There was one containing 20cO, 10oO, 14NO, 25k and an average layer thickness of 2 m.
また、比較の目的で、実施例１および９におけるＷＣ基
超硬焼結合金およびＷｃ基焼結サーメットの切削チップ
の表面を、実施例１におけると同一の条件でＴｉＣを６
μｍの平均層厚で被覆したもの（以下、従来被覆切削チ
ップ１，２という）を用意した。For comparison purposes, the surface of the cutting tip of the WC-based cemented carbide sintered alloy and the Wc-based sintered cermet in Examples 1 and 9 was treated with 6 TiC under the same conditions as in Example 1.
Cutting chips coated with an average layer thickness of μm (hereinafter referred to as conventionally coated cutting chips 1 and 2) were prepared.
ついで、この結果得られた本発明被覆チップ１〜９およ
び従来被覆切削チップ１．２について、被削拐： ＳＮ
ＣＭ−８（硬さ： ＨＢ２７０）、切削速度： １８０
ｍ／ｍｔｎ 、送り： ０．２５ ｍｍ／ ｒｅｖｌ、
切込み＝１．５闇の条件での鋼高速切削試験、被削材：
ＳＮＣＭ−８（硬さＨＢ２７０）、切削速度’ １２０
ｍ／ｍｆ＝。Next, the resulting coated chips 1 to 9 of the present invention and the conventionally coated cutting chips 1.2 were subjected to cutting process: SN
CM-8 (hardness: HB270), cutting speed: 180
m/mtn, feed: 0.25 mm/revl,
Depth of cut = 1.5 Steel high speed cutting test under dark conditions, work material:
SNCM-8 (hardness HB270), cutting speed '120
m/mf=.
送り： ０．５ ｍｍ ／ ｒｅｖ、 、切込み：１．
５ｍｍの条件での鋼高送り切削試験、被削Ｕ’ ： Ｆ
Ｃ−２５（硬さ：ＨＢ ２００ ） 、切削速度： １
６０ ｍ／−７−、送り： ０．２５ ｍｍ／ ｒｅｖ
、 。Feed: 0.5 mm/rev, depth of cut: 1.
Steel high feed cutting test under the condition of 5mm, workpiece U': F
C-25 (hardness: HB 200), cutting speed: 1
60 m/-7-, feed: 0.25 mm/rev
, .
切込み：１．５ｍｍの条件での鋳鉄高速切削試験、およ
び被削拐： ＦＣ−２５（硬さ：ＨＢ２００）、切削速
度： １２０ ｍｌａｍ 、送り：ｏ５叫／ ｒｅｖｌ
、切込み：１、５ ｍｍの条件での鋳鉄高速切削試験を
それぞれ行ない、３０分間の連続切削後の逃げ面摩耗深
さを測定した。これらの結果を第１表に示した。Cast iron high-speed cutting test under conditions of depth of cut: 1.5 mm, and workpiece abrasion: FC-25 (hardness: HB200), cutting speed: 120 ml, feed: O5/revl
, depth of cut: 1 and 5 mm, and cast iron high-speed cutting tests were conducted, and the depth of flank wear after continuous cutting for 30 minutes was measured. These results are shown in Table 1.
第１表に示される結果から、本発明被覆切削チップ１〜
９・は、いずれも鋼および鋳鉄の高速および高送り切削
において、従来被覆切削チップ１゜２に比して一段とす
ぐれた切削寿命を示すことが明らかである。From the results shown in Table 1, the coated cutting tips 1 to 1 of the present invention
It is clear that both No. 9 and No. 9 exhibit a much superior cutting life in high-speed and high-feed cutting of steel and cast iron compared to the conventional coated cutting insert 1°2.
上述のように、この発明の表面被覆焼結合金部材は、そ
の表面被覆層が、高い常温および高温硬さ並びに高靭性
を有し、さらに耐摩耗性１面Ｊ酸化性および高温での化
学的安定性にすぐれた（ Ｓｉ 。As mentioned above, the surface-coated sintered alloy member of the present invention has a surface coating layer that has high hardness at room temperature and high temperature, and high toughness, and also has wear resistance, one side J oxidation resistance, and chemical resistance at high temperatures. Excellent stability (Si).
ｈｉ）ＣＯＮで構成され、かつ前記表面被覆層は前記第
１表中間被覆層によって焼結合金基体の表面に強固に密着結
合しているので、これを鋼および鋳鉄の切削に用いた場
合、いずれの場合においても長い切削寿命を示し、さら
にこれら両被削イ２の高床切削および商送り切削に際し
てもすぐれた切削性能を発揮するなど切削工具として有
用な特注を有するのである。hi) Since the surface coating layer is tightly bonded to the surface of the sintered alloy base by the intermediate coating layer in Table 1, when it is used for cutting steel and cast iron, It has a special feature that makes it useful as a cutting tool, such as exhibiting a long cutting life even in the case of 2, and also exhibiting excellent cutting performance in high-floor cutting and vertical cutting of both of these workpieces.
出願人 三菱金属株式会社Applicant: Mitsubishi Metals Corporation
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14589182AJPS5935675A (en) | 1982-08-23 | 1982-08-23 | Surface-coated sintered alloy member for cutting tool |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14589182AJPS5935675A (en) | 1982-08-23 | 1982-08-23 | Surface-coated sintered alloy member for cutting tool |
| Publication Number | Publication Date |
|---|---|
| JPS5935675Atrue JPS5935675A (en) | 1984-02-27 |
| JPS6150145B2 JPS6150145B2 (en) | 1986-11-01 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14589182AGrantedJPS5935675A (en) | 1982-08-23 | 1982-08-23 | Surface-coated sintered alloy member for cutting tool |
| Country | Link |
|---|---|
| JP (1) | JPS5935675A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998023786A1 (en)* | 1996-11-29 | 1998-06-04 | W. Blösch AG | Method for production of pvd and/or pecvd hard material coatings |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998023786A1 (en)* | 1996-11-29 | 1998-06-04 | W. Blösch AG | Method for production of pvd and/or pecvd hard material coatings |
| Publication number | Publication date |
|---|---|
| JPS6150145B2 (en) | 1986-11-01 |
| Publication | Publication Date | Title |
|---|---|---|
| US6093479A (en) | Coated hard alloy blade member | |
| JP3402146B2 (en) | Surface-coated cemented carbide end mill with a hard coating layer with excellent adhesion | |
| JPH10237650A (en) | Wc base cemented carbide and its production | |
| JPS6119367B2 (en) | ||
| JP2001239404A (en) | Cutting tool made of surface coated cemented carbide having good chipping resistance | |
| JP3460571B2 (en) | Milling tool with excellent wear resistance | |
| JPH11335870A (en) | Titanium carbonitride-aluminum oxide-coated tool | |
| JP3266047B2 (en) | Surface coated cemented carbide cutting tool with excellent interlayer adhesion with hard coating layer | |
| JP3358696B2 (en) | High strength coating | |
| JPH0768623B2 (en) | Surface coated cemented carbide | |
| JPS5935675A (en) | Surface-coated sintered alloy member for cutting tool | |
| JPH08257808A (en) | Surface coated cutting tool | |
| JP3519127B2 (en) | High thermal conductive coated tool | |
| JP3333080B2 (en) | High-strength coated members with consistent interfaces | |
| JP3371796B2 (en) | Surface coated cemented carbide cutting tool with excellent fracture resistance | |
| JP4484500B2 (en) | Surface coated cutting tool | |
| JPH04116134A (en) | Wc base sintered hard alloy excellent in toughness and sintered hard alloy coated with hard layer | |
| JP2648718B2 (en) | Manufacturing method of coated cemented carbide tool | |
| JP2019155569A (en) | Surface-coated cutting tool having hard coating layer exerting excellent oxidation resistance and deposition resistance | |
| JPH0387368A (en) | Coated sintered hard alloy tool | |
| JP3371823B2 (en) | Surface coated cemented carbide cutting tool with excellent interlayer adhesion with hard coating layer | |
| JP4867572B2 (en) | Surface coated cutting tool with excellent chipping resistance due to hard coating layer | |
| JP3236908B2 (en) | Surface coated WC based cemented carbide cutting tool | |
| JPH1177405A (en) | Surface coated cemented carbide cutting tool excellent in high speed cutting and wear resistance | |
| JPH1086002A (en) | Cutting tool made of surface-coated cemented carbide excellent in thermal shock resistance |