JPH09209123A - Hard layer lamination coated cutting tool - Google Patents
Hard layer lamination coated cutting toolInfo
- Publication number
- JPH09209123A JPH09209123A JP1883496A JP1883496A JPH09209123A JP H09209123 A JPH09209123 A JP H09209123A JP 1883496 A JP1883496 A JP 1883496A JP 1883496 A JP1883496 A JP 1883496A JP H09209123 A JPH09209123 A JP H09209123A
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- JP
- Japan
- Prior art keywords
- layer
- hard
- cutting tool
- hard coating
- composite
- 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.)
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- Cutting Tools, Boring Holders, And Turrets (AREA)
- Physical Vapour Deposition (AREA)
- Chemical Vapour Deposition (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、連続および断続
旋削など、いかなる条件の旋削にも共用できる硬質層積
層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 hard layer laminated coating cutting tool which can be commonly used for turning under any condition such as continuous and intermittent turning.
【０００２】[0002]
【従来の技術】従来、ＷＣ基超硬合金、サーメットなど
の基体表面に、耐摩耗性を向上させる目的でＴｉとＡｌ
の複合炭化物層、ＴｉとＡｌの複合窒化物層、ＴｉとＡ
ｌの複合炭窒化物層のうちの一種の単層または２種以上
の複層（以下、これらの層をＴｉとＡｌの複合化合物層
と総称する）からなる平均層厚：０．５〜５μｍの硬質
層を形成した硬質層被覆切削工具は広く知られている
（特開昭６２−５６５６５号公報参照）。2. Description of the Related Art Conventionally, on the surface of a base material such as WC-based cemented carbide or cermet, Ti and Al are used for the purpose of improving wear resistance.
Composite carbide layer of Ti, composite nitride layer of Ti and Al, Ti and A
An average layer thickness consisting of one single layer or two or more multi-layers (hereinafter, these layers are collectively referred to as a composite compound layer of Ti and Al) of the composite carbonitride layer of 1: 0.5 to 5 μm A hard layer-coated cutting tool having a hard layer is widely known (see JP-A-62-56565).
【０００３】また、硬質層被覆切削工具の硬質層の基体
に対する付着強度を改善させるために、ＴｉＣ、Ｔｉ
Ｎ、ＴｉＣＮのうちの一種の単層または２種以上の複層
からなる平均層厚：０．５〜１０μｍの付着強化層を介
して、平均層厚：０．５〜５μｍのＴｉとＡｌの複合化
合物層を形成した硬質層積層被覆切削工具も広く知られ
ている（特開平１−２５２３０４号公報参照）。Further, in order to improve the adhesion strength of the hard layer of the hard layer-coated cutting tool to the substrate, TiC, Ti
A single layer of N and TiCN, or a multilayer consisting of two or more layers, having an average layer thickness of 0.5 to 10 μm and an average layer thickness of 0.5 to 5 μm of Ti and Al. A hard layer laminated cutting tool having a composite compound layer is also widely known (see Japanese Patent Laid-Open No. 1-252304).
【０００４】さらに、Ａｌ含有量が基体付着面から外面
に向かって増加するＴｉとＡｌの複合化合物層を基体表
面に形成した硬質層被覆切削工具も広く知られている
（特開平３−１８８２６４号公報参照）。Further, a hard layer-coated cutting tool in which a composite compound layer of Ti and Al in which the Al content increases from the surface where the substrate is attached to the outer surface is formed on the surface of the substrate is also widely known (JP-A-3-188264). See the bulletin).
【０００５】しかし、これら従来のＴｉとＡｌの複合化
合物層を基体表面に形成した硬質層被覆切削工具または
硬質層積層被覆切削工具においては、ＴｉとＡｌの複合
化合物層のＴｉ／Ａｌの比を５０／５０より大きくする
と、耐摩耗性は良いが耐熱衝撃性に劣り、またＴｉ／Ａ
ｌの比を５０／５０より小さくすると、耐熱衝撃性は高
いが、耐摩耗性が悪いという欠点があり、そのために、
従来は旋削の条件に応じて硬質層被覆切削工具を分類
し、旋削条件に応じて最適な硬質層被覆切削工具を利用
者に提供していた。However, in these conventional hard layer-coated cutting tools or hard layer-laminated coating cutting tools in which a composite compound layer of Ti and Al is formed on the surface of a substrate, the Ti / Al ratio of the composite compound layer of Ti and Al is When it is larger than 50/50, the wear resistance is good, but the thermal shock resistance is poor, and Ti / A
When the ratio of l is smaller than 50/50, the thermal shock resistance is high, but the wear resistance is poor, and therefore,
Conventionally, the hard layer-coated cutting tools are classified according to the turning conditions, and the optimum hard layer-coated cutting tools are provided to the user according to the turning conditions.
【０００６】[0006]
【発明が解決しようとする課題】しかし、近年の硬質層
被覆切削工具に対する値下げ要求が激しく、この対応策
の一つとして、少品種大量生産してコストを削減し、硬
質層被覆切削工具１個当たりの単価を下げる傾向があ
り、従来のように旋削条件に応じて最適な硬質層被覆切
削工具を分類して利用者に提供することは行われなくな
り、一種類の硬質層被覆切削工具を用いて条件の異なっ
た旋削、例えば、一種類の硬質層被覆切削工具で連続旋
削だけでなく断続旋削にも共用することのできるＴｉと
Ａｌの複合化合物層を形成した硬質層被覆切削工具が求
められている。しかし、あらゆる旋削条件に対して共に
十分な工具寿命を有するＴｉとＡｌの複合窒化物層を被
覆してなる切削工具は今だ得られていない。However, there is a strong demand for price cuts for hard layer-coated cutting tools in recent years, and one of the countermeasures against this is to mass-produce a small variety of products to reduce costs, and to cut one hard layer-coated cutting tool. Since there is a tendency to lower the unit price per hit, it is no longer possible to classify the optimum hard layer coated cutting tool according to the turning conditions and provide it to the user as in the past, and use one type of hard layer coated cutting tool. Therefore, there is a need for a hard layer coated cutting tool that forms a composite compound layer of Ti and Al that can be used not only for continuous turning but also for intermittent turning with one type of hard layer coated cutting tool. ing. However, a cutting tool coated with a composite nitride layer of Ti and Al, which has a sufficient tool life for all turning conditions, has not yet been obtained.
【０００７】[0007]
【課題を解決するための手段】そこで、本発明者らは、
いかなる条件の旋削にも優れた性能を示す硬質層被覆切
削工具を製造すべく研究を行った結果、（ａ）ＷＣ基超
硬合金またはＴｉＣＮ基サーメットからなる基体表面
に、ＴｉＣ、ＴｉＮ、ＴｉＣＮのうちの一種の単層また
は２種以上の複層からなる平均層厚：０．１〜１０μｍ
の付着強化層を介して、Ｔｉ／Ａｌの比が原子比で２０
／８０〜６０／４０の範囲内のＴｉとＡｌの複合炭化物
層、ＴｉとＡｌの複合窒化物層、ＴｉとＡｌの複合炭窒
化物層のうちの一種の単層または２種以上の複層からな
る平均層厚：０．５〜１０μｍの硬質被覆下層と、Ｔｉ
／Ａｌの比が原子比で５０／５０〜８０／２０の範囲内
のＴｉとＡｌの複合炭化物層、ＴｉとＡｌの複合窒化物
層、ＴｉとＡｌの複合炭窒化物層のうちの一種の単層ま
たは２種以上の複層からなる平均層厚：０．５〜１０μ
ｍの硬質被覆上層とを被覆してなり、かつ前記硬質被覆
下層のＴｉ／Ａｌの比の値は前記硬質被覆上層のＴｉ／
Ａｌの比の値より小である硬質層積層被覆切削工具は、
いかなる旋削条件に共用しても、従来より一層使用寿命
が向上する、（ｂ）前記（ａ）記載の硬質層積層被覆切
削工具の最表面に、平均層厚：０．１〜５μｍのＴｉＮ
層を被覆してもよい、という知見を得たのである。Means for Solving the Problems Accordingly, the present inventors have:
As a result of conducting research to produce a hard layer-coated cutting tool that exhibits excellent performance in turning under any condition, (a) TiC, TiN, and TiCN on the surface of a substrate made of WC-based cemented carbide or TiCN-based cermet Average layer thickness consisting of one type of single layer or two or more types of multilayers: 0.1 to 10 μm
The Ti / Al ratio is 20 in atomic ratio through the adhesion strengthening layer of
/ 80 to 60/40 within the range of Ti and Al compound carbide layer, Ti and Al compound nitride layer, Ti and Al compound carbonitride layer, a single layer or two or more layers. An average layer thickness of 0.5 to 10 μm, a hard coating lower layer, and Ti
One of a Ti / Al compound carbide layer, a Ti / Al compound nitride layer, and a Ti / Al compound carbonitride layer having an atomic ratio of / Al of 50/50 to 80/20. Average layer thickness consisting of a single layer or two or more types of multilayers: 0.5 to 10 μm
m of the hard coating upper layer, and the value of the Ti / Al ratio of the hard coating lower layer is Ti / Al of the hard coating upper layer.
A hard layer laminated coating cutting tool having a ratio smaller than Al is
Even if used under any turning condition, the service life is further improved than before. (B) TiN having an average layer thickness of 0.1 to 5 μm on the outermost surface of the hard layer laminated coated cutting tool described in (a) above.
We have found that the layers may be coated.
【０００８】この発明は、かかる知見に基づいて成され
たものであって、（１） ＷＣ基超硬合金またはＴｉＣ
Ｎ基サーメットからなる基体表面に、ＴｉＣ、ＴｉＮ、
ＴｉＣＮのうちの一種の単層または２種以上の複層から
なる平均層厚：０．１〜１０μｍの付着強化層を介し
て、Ｔｉ／Ａｌの比が原子比で２０／８０〜６０／４０
の範囲内のＴｉとＡｌの複合炭化物層、ＴｉとＡｌの複
合窒化物層、ＴｉとＡｌの複合炭窒化物層のうちの一種
の単層または２種以上の複層からなる平均層厚：０．５
〜１０μｍの硬質被覆下層と、Ｔｉ／Ａｌの比が原子比
で５０／５０〜８０／２０の範囲内のＴｉとＡｌの複合
炭化物層、ＴｉとＡｌの複合窒化物層、ＴｉとＡｌの複
合炭窒化物層のうちの一種の単層または２種以上の複層
からなる平均層厚：０．５〜１０μｍの硬質被覆上層と
を被覆してなり、かつ前記硬質被覆下層のＴｉ／Ａｌの
比の値は前記硬質被覆上層のＴｉ／Ａｌの比の値より小
である硬質層積層被覆切削工具、（２） 前記（１）記
載の硬質層複合被覆切削工具の最表面に、平均層厚：
０．１〜５μｍのＴｉＮ層を被覆してなる硬質層積層被
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 above-mentioned findings. (1) WC-based cemented carbide or TiC
On the substrate surface made of N-based cermet, TiC, TiN,
The Ti / Al ratio is 20/80 to 60/40 in terms of atomic ratio through an adhesion-strengthening layer having an average layer thickness of 0.1 to 10 μm consisting of one single layer of TiCN or two or more layers of TiCN.
An average layer thickness consisting of a single layer or a combination of two or more layers of a composite carbide layer of Ti and Al, a composite nitride layer of Ti and Al, and a composite carbonitride layer of Ti and Al within the range of: 0.5
-10 μm hard coating lower layer, Ti / Al composite carbide layer of Ti / Al having an atomic ratio of 50/50 to 80/20, Ti / Al composite nitride layer, and Ti / Al composite. One of the carbonitride layers is composed of a single layer or two or more types of multilayers, and is covered with a hard coating upper layer having an average layer thickness of 0.5 to 10 μm, and Ti / Al of the hard coating lower layer. The value of the ratio is smaller than the value of the Ti / Al ratio of the hard coating upper layer, the hard layer laminated coating cutting tool, (2) The average layer thickness on the outermost surface of the hard layer composite coating cutting tool according to (1) above. :
It is characterized by a hard layer laminated coating cutting tool formed by coating a TiN layer of 0.1 to 5 μm.
【０００９】この発明の硬質層積層被覆切削工具におけ
る付着強化層、硬質被覆下層、硬質被覆上層および最表
面のＴｉＮ層を前記の如く限定した理由を説明する。The reason why the adhesion strengthening layer, the hard coating lower layer, the hard coating upper layer and the outermost TiN layer in the hard layer laminated coating cutting tool of the present invention are limited as described above will be explained.
【００１０】（イ）付着強化層 ＴｉＣ層、ＴｉＮ層、ＴｉＣＮ層のうちの一種の単層ま
たは２種以上の複層を付着強化層として基体に対して直
接被覆し、その上にＴｉとＡｌの複合化合物層を被覆す
ると、ＴｉとＡｌの複合化合物層の密着性が向上し、剥
離が防止されるが、付着強化層の厚さが０．１μｍ未満
では付着強度向上による工具寿命の向上が望めず、一
方、付着強化層の厚さが１０μｍを越えると、耐摩耗性
が低下する。したがって、付着強化層の厚さは０．１〜
１０μｍに定めた。付着強化層の厚さの一層好ましい範
囲は０．５〜５．０μｍである。(A) Adhesion-strengthening layer A TiC layer, a TiN layer, or a TiCN layer, which is a single layer or two or more types of multiple layers, is directly coated on a substrate as an adhesion-strengthening layer, on which Ti and Al are deposited. When the composite compound layer of No. 1 is coated, the adhesion of the composite compound layer of Ti and Al is improved and peeling is prevented, but if the thickness of the adhesion strengthening layer is less than 0.1 μm, the tool life is improved due to the improvement of the adhesion strength. On the other hand, if the thickness of the adhesion-strengthening layer exceeds 10 μm, the abrasion resistance decreases. Therefore, the thickness of the adhesion strengthening layer is 0.1 to
It was set to 10 μm. A more preferable range of the thickness of the adhesion strengthening layer is 0.5 to 5.0 μm.
【００１１】（ロ）硬質被覆下層および硬質被覆上層 ＴｉとＡｌの複合化合物層は、Ｔｉ／Ａｌの比率の異な
る硬質被覆下層および硬質被覆上層からなることが好ま
しく、硬質被覆下層はＴｉとＡｌの複合炭化物層のＴｉ
／Ａｌの値が２０／８０〜６０／４０の範囲内にあり、
硬質被覆上層はＴｉとＡｌの複合炭化物層のＴｉ／Ａｌ
の値が５０／５０〜８０／２０の範囲内にあり、かつ硬
質被覆下層のＴｉ／Ａｌの値は硬質被覆上層のＴｉ／Ａ
ｌの値よりも小であることが必要である。その理由とし
て、硬質被覆下層のＴｉ／Ａｌの値は硬質被覆上層のＴ
ｉ／Ａｌの値よりも小であることにより積層被覆層の中
心部の熱伝導率が向上し、耐欠損性が向上することによ
るものと考えられるが明らかではない。前記硬質被覆下
層および硬質被覆上層の厚さが、それぞれ０．５μｍ未
満では耐摩耗性が悪く、一方、１０μｍを越えると耐欠
損性が低下する。したがって、硬質被覆下層および硬質
被覆上層の厚さはそれぞれ０．５〜１０μｍに定めた。
硬質被覆下層および硬質被覆上層の厚さの一層好ましい
範囲はそれぞれ１．０〜５．０μｍである。(B) Hard coating lower layer and hard coating upper layer The composite compound layer of Ti and Al is preferably composed of a hard coating lower layer and a hard coating upper layer having different Ti / Al ratios. The hard coating lower layer is composed of Ti and Al. Ti of composite carbide layer
/ Al value is in the range of 20 / 80-60 / 40,
The hard coating upper layer is Ti / Al which is a composite carbide layer of Ti and Al.
Is within the range of 50/50 to 80/20, and the value of Ti / Al of the hard coating lower layer is Ti / A of the hard coating upper layer.
It must be less than the value of l. The reason is that the value of Ti / Al of the hard coating lower layer is T of the hard coating upper layer.
It is considered to be due to the fact that when the value is smaller than the value of i / Al, the thermal conductivity of the central portion of the laminated coating layer is improved and the fracture resistance is improved, but it is not clear. If the hard coating lower layer and the hard coating upper layer each have a thickness of less than 0.5 μm, the wear resistance is poor, while if they exceed 10 μm, the fracture resistance decreases. Therefore, the thickness of each of the hard coating lower layer and the hard coating upper layer is set to 0.5 to 10 μm.
More preferable ranges of the thickness of the hard coating lower layer and the hard coating upper layer are 1.0 to 5.0 μm, respectively.
【００１２】（ハ）ＴｉＮ層 ＴｉＮ層は美しい黄金色を硬質層複合被覆切削工具に付
与するために、必要に応じて最外層として形成するが、
その厚さが０．１μｍ未満では黄金色が出ず、一方、５
μｍを越えると、耐欠損性および耐欠損性が低下する。
したがって、最外層のＴｉＮ層は０．１〜５μｍに定め
た。最外層のＴｉＮ層の厚さの一層好ましい範囲は０．
２〜３μｍである。(C) TiN layer The TiN layer is formed as the outermost layer as necessary in order to impart a beautiful golden color to the hard layer composite coated cutting tool.
When the thickness is less than 0.1 μm, golden color does not appear, while 5
If it exceeds μm, the chipping resistance and the chipping resistance decrease.
Therefore, the outermost TiN layer is set to 0.1 to 5 μm. A more preferable range of the thickness of the outermost TiN layer is 0.
It is 2-3 μm.
【００１３】[0013]
【発明の実施の形態】つぎに、この発明の硬質層複合被
覆切削工具を実施例に基づいて具体的に説明する。 実施例１ 基体として、重量％で、ＷＣ−９％Ｃｏ−８％ＴｉＣ−
１０％ＴａＣからなるＷＣ基超硬合金で構成され、かつ
ＩＳＯ規格ＳＮＧＧ１２０４０８Ｒの形状を有する切削
チップを用意し、この切削チップの表面に、まず、化学
蒸着装置（表１にはＣＶＤで示す。）および物理蒸着装
置の１つであるアークイオンプレーティング装置（表１
にはＰＶＤで示す。）を用い、表１に示される条件でそ
れぞれ表２、表３および表４に示される組成および平均
層厚を有する付着強化層を形成し、引き続いて、その上
に表１に示されるＰＶＤ条件でそれぞれ表２、表３およ
び表４に示される組成および平均層厚を有する硬質被覆
下層および硬質被覆上層を形成し、さらに必要に応じて
最外層のＴｉＮ層を形成することにより、本発明硬質層
積層被覆切削工具（以下、本発明被覆切削工具とい
う。）１〜１８、比較硬質層積層被覆切削工具（以下、
比較被覆切削工具という。）１〜６および従来硬質層積
層被覆切削工具（以下、従来被覆切削工具という。）１
〜５を作製した。BEST MODE FOR CARRYING OUT THE INVENTION Next, the hard layer composite coated cutting tool of the present invention will be specifically described based on Examples. Example 1 As a substrate, by weight%, WC-9% Co-8% TiC-
A cutting tip composed of a WC-based cemented carbide made of 10% TaC and having a shape of ISO standard SNGG120408R is prepared. First, a chemical vapor deposition device (indicated by CVD in Table 1) is provided on the surface of the cutting tip. And an arc ion plating device which is one of physical vapor deposition devices (Table 1
Is indicated by PVD. ) Is used to form an adhesion-strengthening layer having the compositions and average layer thicknesses shown in Tables 2, 3, and 4, respectively, under the conditions shown in Table 1, followed by the PVD conditions shown in Table 1 above. By forming a hard coating lower layer and a hard coating upper layer having the compositions and the average layer thicknesses shown in Tables 2, 3 and 4, respectively, and further forming the outermost TiN layer, if necessary. Layer laminated coating cutting tool (hereinafter referred to as the present invention coated cutting tool) 1 to 18, comparative hard layer laminated coating cutting tool (hereinafter, referred to as
It is called a comparative coated cutting tool. 1 to 6 and conventional hard layer laminated coating cutting tool (hereinafter referred to as conventional coating cutting tool) 1
~ 5 were produced.
【００１４】[0014]
【表１】 [Table 1]
【００１５】[0015]
【表２】 [Table 2]
【００１６】[0016]
【表３】 [Table 3]
【００１７】[0017]
【表４】 [Table 4]
【００１８】次に、これら本発明被覆切削工具１〜１
８、比較被覆切削工具１〜６および従来被覆切削工具１
〜５について、以下の湿式連続旋削試験および乾式断続
旋削試験を行った。Next, these coated cutting tools 1 to 1 of the present invention
8, comparative coated cutting tools 1-6 and conventional coated cutting tool 1
The following wet continuous turning test and dry interrupted turning test were performed on Nos. 5 to 5.
【００１９】（Ａ） 被削材：ＳＮＣＭ４３９（Ｎｉ−Ｃｒ−Ｍｏ鋼、ＨB ２
６０）、 切削速度：１８０ｍ／ｍｉｎ．、 送り：０．３ｍｍ／刃、 切り込み：１．５ｍｍ、 切削時間：２０ｍｉｎ．、 の条件（旋削条件Ａという）での鋼の湿式連続旋削試
験、(A) Work material: SNCM439 (Ni-Cr-Mo steel, HB 2
60), cutting speed: 180 m / min. , Feed: 0.3 mm / blade, incision: 1.5 mm, cutting time: 20 min. Wet continuous turning test of steel under the following conditions (referred to as turning condition A):
【００２０】（Ｂ） 被削材：円筒支持台の長さ方向両側２箇所に取り付けた
断面扇形のＳＮＣＭ４３９（Ｎｉ−Ｃｒ−Ｍｏ鋼、ＨB
２６０）製角材、 切削速度：１８０ｍ／ｍｉｎ．、 送り：０．２５ｍｍ／刃、 切り込み：３．０ｍｍ、 切削時間：１０ｍｉｎ．、 の条件（旋削条件Ｂという）での鋼の乾式断続旋削試
験、(B) Work material: SNCM439 (Ni-Cr-Mo steel, HB with a fan-shaped cross section attached to two positions on both sides in the length direction of the cylindrical support table.
260) Square bar, Cutting speed: 180 m / min. , Feed: 0.25 mm / blade, incision: 3.0 mm, cutting time: 10 min. Dry interrupted turning test of steel under the conditions of, (Turning condition B),
【００２１】これら条件の旋削試験を行った後、旋削条
件Ａでは切刃の逃げ面摩耗幅、旋削条件Ｂでは２０個の
試験切刃の内の欠け発生数をそれぞれ測定し、その結果
を表５に示した。After performing the turning test under these conditions, the flank wear width of the cutting edge under the turning condition A and the number of chipping occurrences of 20 test cutting edges under the turning condition B were measured, respectively, and the result is shown. 5 shows.
【００２２】[0022]
【表５】 [Table 5]
【００２３】表２〜表５に示される結果から、本発明被
覆切削工具１〜１８は、従来被覆切削工具１〜５に比べ
て、耐摩耗性および耐欠損性に優れ、長期にわたって優
れた切削性能を発揮することがわかる。また、比較被覆
切削工具１〜６に見られるように、この発明の条件から
外れても、切刃の耐欠損性または耐摩耗性のいずれかの
点で劣ることが分かる。From the results shown in Tables 2 to 5, the coated cutting tools 1 to 18 of the present invention are superior to the conventional coated cutting tools 1 to 5 in wear resistance and fracture resistance, and are excellent in cutting over a long period of time. You can see that it performs well. Further, as can be seen from the comparative coated cutting tools 1 to 6, it can be seen that even if the conditions of the present invention are deviated, the cutting edge is inferior in either fracture resistance or wear resistance.
【００２４】実施例２ 基体として、重量％で、ＴｉＣＮ−１５％ＷＣ−１０％
ＴａＣ−９％Ｍｏ2 Ｃ６％Ｎｉ−１２Ｃｏからなる組成
を有するＴｉＣＮ基サーメットで構成され、かつＩＳＯ
規格ＳＰＧＮ１２０４０８の形状を有する切削チップを
用意し、この切削チップの表面に、実施例１と同様のア
ーク式イオンプレーティング装置を用い、実施例１の表
１に示される条件にてそれぞれ表６、表７および表８に
示される組成および平均層厚を有する付着強化層を形成
し、引き続いて、その上に表１に示されるＰＶＤ条件で
それぞれ表６、表７および表８に示される組成および平
均層厚を有する硬質被覆下層および硬質被覆上層を形成
し、さらに必要に応じて最外層のＴｉＮ層を形成するこ
とにより、本発明被覆切削工具１９〜３３、比較被覆切
削工具７〜１２および従来被覆切削工具６〜９を作製し
た。Example 2 As a substrate, by weight%, TiCN-15% WC-10%
Is composed of a TiCN-based cermet having a composition of TaC-9% Mo 2 C 6% Ni-12Co, and is ISO
A cutting tip having the shape of the standard SPGN120408 was prepared, and the same arc type ion plating device as that in Example 1 was used on the surface of this cutting tip, under the conditions shown in Table 1 of Example 1, Table 6, respectively. An adhesion-strengthening layer having the compositions and average layer thicknesses shown in Tables 7 and 8 was formed, followed by the PVD conditions shown in Table 1 and the compositions shown in Tables 6, 7, and 8 respectively. By forming a hard coating lower layer and a hard coating upper layer having an average layer thickness, and further forming a TiN layer of the outermost layer, if necessary, the coated cutting tools 19 to 33 of the present invention, the comparative coated cutting tools 7 to 12 and the conventional one. Coated cutting tools 6-9 were produced.
【００２５】[0025]
【表６】 [Table 6]
【００２６】[0026]
【表７】 [Table 7]
【００２７】[0027]
【表８】 [Table 8]
【００２８】これら本発明被覆切削工具１９〜３３、比
較被覆切削工具７〜１２および従来被覆切削工具６〜９
について、下記の湿式連続旋削試験および乾式断続旋削
試験を行った。These coated cutting tools 19 to 33 of the present invention, comparative coated cutting tools 7 to 12 and conventional coated cutting tools 6 to 9
The following wet continuous turning test and dry interrupted turning test were carried out.
【００２９】（Ｃ） 被削材：ＳＣＭ４４０（Ｃｒ−Ｍｏ鋼、ＨB ２２０）、 切削速度：２００ｍ／ｍｉｎ．、 送り：０．２５ｍｍ／刃、 切り込み：２．０ｍｍ、 切削時間：２０ｍｉｎ．、 の条件（旋削条件Ｃという）での鋼の湿式連続旋削試
験、(C) Work material: SCM440 (Cr-Mo steel, HB 220), cutting speed: 200 m / min. , Feed: 0.25 mm / blade, incision: 2.0 mm, cutting time: 20 min. Wet continuous turning test of steel under the following conditions (referred to as turning condition C):
【００３０】（Ｄ） 被削材：円筒支持台の長さ方向両側２箇所に取り付けた
断面扇形のＳＣＭ４４０（Ｃｒ−Ｍｏ鋼、ＨB ２２０）
製角材、 切削速度：１４０ｍ／ｍｉｎ．、 送り：０．３ｍｍ／刃、 切り込み：３．０ｍｍ、 切削時間：１０ｍｉｎ．、 の条件（旋削条件Ｄという）での鋼の乾式断続旋削試
験、(D) Work material: SCM440 (Cr-Mo steel, HB 220) with a fan-shaped cross section attached at two positions on both sides in the length direction of the cylindrical support base.
Square bar, cutting speed: 140 m / min. , Feed: 0.3 mm / blade, incision: 3.0 mm, cutting time: 10 min. Dry interrupted turning test of steel under the conditions of, (Turning condition D),
【００３１】これら条件の旋削試験を行った後、旋削条
件Ｃでは切刃の逃げ面摩耗幅、旋削条件Ｄでは２０個の
試験切刃の内の欠け発生数をそれぞれ測定し、その結果
を表９に示した。After performing the turning test under these conditions, the flank wear width of the cutting edge under the turning condition C and the number of occurrences of chipping in 20 test cutting edges under the turning condition D were measured, respectively, and the result is shown. 9 shows.
【００３２】[0032]
【表９】 [Table 9]
【００３３】[0033]
【発明の効果】表６〜表９に示される結果から、本発明
被覆切削工具１９〜３３は、従来被覆切削工具６〜９に
比べて、耐摩耗性および耐欠損性に優れ、長期にわたっ
て優れた切削性能を発揮することがわかる。また、比較
被覆切削工具７〜１２に見られるように、この発明の条
件から外れても、切刃の耐摩耗性または耐欠損性のいず
れかの点で劣ることが分かる。上述のように、この発明
の硬質層積層被覆切削工具は、条件の異なる旋削に共用
しても優れた工具寿命を発揮し、産業上優れた効果をも
たらすものである。From the results shown in Tables 6 to 9, the coated cutting tools 19 to 33 of the present invention are superior to the conventional coated cutting tools 6 to 9 in wear resistance and fracture resistance, and are excellent for a long period of time. It can be seen that excellent cutting performance is exhibited. Further, as can be seen from the comparative coated cutting tools 7 to 12, it is found that even if the conditions of the present invention are not satisfied, the cutting edge is inferior in either wear resistance or chipping resistance. As described above, the hard layer laminated coating cutting tool of the present invention exhibits an excellent tool life even when it is commonly used for turning under different conditions, and brings an excellent industrial effect.
Claims (2)
ットからなる基体表面に、ＴｉＣ、ＴｉＮ、ＴｉＣＮの
うちの一種の単層または２種以上の複層からなる平均層
厚：０．１〜１０μｍの付着強化層を介して、 Ｔｉ／Ａｌの比が原子比で２０／８０〜６０／４０の範
囲内のＴｉとＡｌの複合炭化物層、ＴｉとＡｌの複合窒
化物層、ＴｉとＡｌの複合炭窒化物層のうちの一種の単
層または２種以上の複層からなる平均層厚：０．５〜１
０μｍの硬質被覆下層と、 Ｔｉ／Ａｌの比が原子比で５０／５０〜８０／２０の範
囲内のＴｉとＡｌの複合炭化物層、ＴｉとＡｌの複合窒
化物層、ＴｉとＡｌの複合炭窒化物層のうちの一種の単
層または２種以上の複層からなる平均層厚：０．５〜１
０μｍの硬質被覆上層と、を被覆してなり、かつ前記硬
質被覆下層のＴｉ／Ａｌの比の値は前記硬質被覆上層の
Ｔｉ／Ａｌの比の値より小であることを特徴とする硬質
層積層被覆切削工具。1. An average layer thickness consisting of a single layer of TiC, TiN, and TiCN or a multilayer of two or more types: 0.1 to 10 μm on the surface of a substrate made of WC-based cemented carbide or TiCN-based cermet. Through the adhesion-strengthening layer of Ti / Al, a Ti / Al composite carbide layer, a Ti / Al composite nitride layer, and a Ti / Al composite layer having an atomic ratio of 20/80 to 60/40. Average layer thickness consisting of one kind of carbonitride layer or two or more kinds of multilayers: 0.5 to 1
0 μm hard coating lower layer, Ti / Al composite carbide layer of Ti / Al, Ti / Al composite nitride layer, Ti / Al composite carbon having Ti / Al ratio in the atomic ratio range of 50/50 to 80/20. Average layer thickness consisting of one single layer or two or more multilayers of the nitride layers: 0.5 to 1
A hard coating upper layer having a thickness of 0 μm, and the value of the Ti / Al ratio of the hard coating lower layer is smaller than the value of the Ti / Al ratio of the hard coating upper layer. Multilayer cutting tool.
削工具の最表面に、平均層厚：０．１〜５μｍのＴｉＮ
層を被覆してなることを特徴とする硬質層積層被覆切削
工具。2. A TiN having an average layer thickness of 0.1 to 5 μm on the outermost surface of the hard layer laminated cutting tool according to claim 1 or 2.
A hard layer laminated coating cutting tool characterized by being coated with layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01883496A JP3414102B2 (en) | 1996-02-05 | 1996-02-05 | Hard layer laminated coated cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01883496A JP3414102B2 (en) | 1996-02-05 | 1996-02-05 | Hard layer laminated coated cutting tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09209123A true JPH09209123A (en) | 1997-08-12 |
| JP3414102B2 JP3414102B2 (en) | 2003-06-09 |
Family
ID=11982603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01883496A Expired - Fee Related JP3414102B2 (en) | 1996-02-05 | 1996-02-05 | Hard layer laminated coated cutting tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3414102B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007331103A (en) * | 2006-06-15 | 2007-12-27 | Sandvik Intellectual Property Ab | Insert for milling of cast iron |
| JP2008512262A (en) * | 2005-01-31 | 2008-04-24 | サンドビック インテレクチュアル プロパティー アクティエボラーグ | Cemented carbide insert for short hole drilling that requires toughness |
| JP2009034811A (en) * | 2007-06-15 | 2009-02-19 | Sandvik Intellectual Property Ab | Cemented carbide insert for parting, grooving and threading |
| US8057571B2 (en) | 2006-12-27 | 2011-11-15 | Sandvik Intellectual Property Ab | Corrosion resistant tool |
| JP2015208845A (en) * | 2014-04-30 | 2015-11-24 | 三菱マテリアル株式会社 | Surface-coated cutting tool exhibiting excellent chipping resistance |
-
1996
- 1996-02-05 JP JP01883496A patent/JP3414102B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008512262A (en) * | 2005-01-31 | 2008-04-24 | サンドビック インテレクチュアル プロパティー アクティエボラーグ | Cemented carbide insert for short hole drilling that requires toughness |
| JP2007331103A (en) * | 2006-06-15 | 2007-12-27 | Sandvik Intellectual Property Ab | Insert for milling of cast iron |
| US8057571B2 (en) | 2006-12-27 | 2011-11-15 | Sandvik Intellectual Property Ab | Corrosion resistant tool |
| JP2009034811A (en) * | 2007-06-15 | 2009-02-19 | Sandvik Intellectual Property Ab | Cemented carbide insert for parting, grooving and threading |
| JP2015208845A (en) * | 2014-04-30 | 2015-11-24 | 三菱マテリアル株式会社 | Surface-coated cutting tool exhibiting excellent chipping resistance |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3414102B2 (en) | 2003-06-09 |
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