JPH0825113A - Cutting tool made of titanium carbonitride based cermet with excellent wear resistance - Google Patents
Cutting tool made of titanium carbonitride based cermet with excellent wear resistanceInfo
- Publication number
- JPH0825113A JPH0825113A JP18890694A JP18890694A JPH0825113A JP H0825113 A JPH0825113 A JP H0825113A JP 18890694 A JP18890694 A JP 18890694A JP 18890694 A JP18890694 A JP 18890694A JP H0825113 A JPH0825113 A JP H0825113A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- hard dispersed
- cored
- dispersed phase
- ticn
- 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)
Abstract
(57)【要約】
【目的】 すぐれた耐摩耗性と靭性を有するＴｉＣＮ基
サーメット製切削工具を提供する。
【構成】 Ｃｏおよび／またはＮｉを主成分とする金属
結合相：５〜３０容量％を含有し、残りが実質的に硬質
分散相からなるＴｉＣＮ基サーメットで構成された切削
工具において、前記硬質分散相を、（ａ）有芯２重相構
造および／または有芯３重相構造を有し、芯部が、（Ｔ
ｉ，Ｍ）ＣＮからなる硬質分散相、および（ａ' ）単一
相構造を有する（Ｔｉ，Ｍ）ＣＮからなる硬質分散相
と、２５〜７０容量％の（ｂ）有芯２重相構造および／
または３重相構造を有し、芯部がＴｉＣＮからなる硬質
分散相、および必要に応じて（ｂ' ）単一相構造を有す
るＴｉＣＮからなる硬質分散相（上記ＭはＣｒおよび／
またはＶと、Ｔａ，Ｎｂ，Ｚｒ，Ｗ，およびＭｏのうち
の１種以上とからなる）で構成してなる。(57) [Summary] [Objective] To provide a cutting tool made of a TiCN-based cermet having excellent wear resistance and toughness. A metal bonding phase containing Co and / or Ni as a main component: a cutting tool composed of a TiCN-based cermet containing 5 to 30% by volume and the remainder consisting essentially of a hard dispersed phase, wherein the hard dispersed The phase has (a) a cored double-phase structure and / or a cored triple-phase structure, and the core part has (T)
i, M) CN hard dispersed phase, and (a ') hard dispersed phase composed of (Ti, M) CN having a single phase structure, and 25 to 70% by volume of (b) cored dual phase structure and/
Alternatively, a hard dispersed phase having a triple phase structure and a core portion made of TiCN, and (b ′) a hard dispersed phase made of TiCN having a single phase structure (M is Cr and / or
Or V and at least one of Ta, Nb, Zr, W, and Mo).
Description
【０００１】[0001]
【産業上の利用分野】この発明は、すぐれた耐摩耗性を
有し、かつ靭性にもすぐれ、したがって、例えば鋼の連
続切削は勿論のこと、断続切削に用いた場合にも切刃に
欠損やチッピング（微小欠け）などの発生なく、すぐれ
た切削性能を長期に亘って発揮する炭窒化チタン（以
下、ＴｉＣＮで示す）基サーメット製切削工具に関する
ものである。BACKGROUND OF THE INVENTION The present invention has excellent wear resistance and excellent toughness. Therefore, for example, when used for continuous cutting of steel as well as for intermittent cutting, the cutting edge is damaged. The present invention relates to a titanium carbonitride (hereinafter referred to as TiCN) -based cermet cutting tool that exhibits excellent cutting performance for a long period of time without occurrence of chipping (chipping) or the like.
【０００２】[0002]
【従来の技術】従来、例えば特開昭６２−１７０４５２
号公報や特開昭６３−８３２４１号公報などに記載され
るように、Ｃｏおよび／またはＮｉを主成分とする金属
結合相：５〜３０容量％を含有し、残りが実質的に硬質
分散相からなり、かつ前記硬質分散相が、（ａ''） 有
芯２重相構造および／または有芯３重相構造を有し、か
つ芯部が、Ｔｉと、Ｔｉを除く周期律表の４ａ，５ａ，
および６ａ族元素のうちの１種以上との複合炭窒化物固
溶体〔以下、（Ｔｉ，Ｍ' ）ＣＮで示す］からなる硬質
分散相、（ａ''' ） 単一相構造を有する（Ｔｉ，Ｍ'
）ＣＮからなる硬質分散相、以上（ａ''）、あるいは
（ａ''）と（ａ''' ）からなるＴｉＣＮ基サーメットで
構成された切削工具が、例えば鋼などの連続切削や断続
切削に用いられている。2. Description of the Related Art Conventionally, for example, JP-A-62-170452.
As described in JP-A No. 63-83241 and the like, a metal bonded phase containing Co and / or Ni as a main component: 5 to 30% by volume, and the remainder substantially a hard dispersed phase. And the hard dispersed phase has (a ″) a cored double-phase structure and / or a cored triple-phase structure, and the core portion is Ti and 4a of the periodic table excluding Ti. , 5a,
And a hard disperse phase composed of a composite carbonitride solid solution [hereinafter referred to as (Ti, M ′) CN] with at least one of the 6a group elements, (a ″ ′) having a single phase structure (Ti , M '
) A hard disperse phase composed of CN, or a cutting tool composed of the above (a '') or a TiCN-based cermet composed of (a '') and (a ''') is used for continuous cutting or intermittent cutting of steel, for example. Is used for.
【０００３】[0003]
【発明が解決しようとする課題】一方、近年の切削加工
のＦＡ化および省力化に伴ない、切削工具にも一段と使
用寿命の延命化が求められているが、上記の従来ＴｉＣ
Ｎ基サーメット製切削工具は、すぐれた靭性を有するの
で、例えば鋼の断続切削で切刃に欠損やチッピングが発
生することはないが、摩耗進行が比較的早いために、短
時間の切削で使用寿命に至るのが現状である。On the other hand, with the recent trend toward FA and labor saving in cutting work, cutting tools have been required to further extend their service life.
N-based cermet cutting tools have excellent toughness, so for example, intermittent cutting of steel will not cause chipping or chipping of the cutting edge, but it will be used in a short time because the wear progresses relatively quickly. The current situation is that it reaches the end of its life.
【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ＴｉＣＮ基サーメッ
ト製切削工具に着目し、これのさらに一段の耐摩耗性向
上をはかるべく研究を行なった結果、上記の従来ＴｉＣ
Ｎ基サーメット製切削工具を構成するＴｉＣＮ基サーメ
ットにおける硬質分散相を、（ａ） 有芯２重相構造お
よび／または有芯３重相構造を有し、かつ芯部が、Ｔｉ
と、Ｃｒおよび／またはＶと、Ｔａ，Ｎｂ，Ｚｒ，Ｗ，
およびＭｏのうちの１種以上との複合炭窒化物固溶体
〔以下、（Ｔｉ，Ｍ）ＣＮで示す〕からなる硬質分散
相、（ａ' ） 単一相構造を有する上記（Ｔｉ，Ｍ）Ｃ
Ｎからなる硬質分散相、以上（ａ）および（ａ' ）に特
定した上で、さらに硬質分散相として、（ｂ） 有芯２
重相構造および／または有芯３重相構造を有し、かつ芯
部がＴｉＣＮからなる硬質分散相、（ｂ' ） 単一相構
造を有するＴｉＣＮからなる硬質分散相、以上（ｂ）、
あるいは（ｂ）と（ｂ' ）を、全体に占める割合で、２
５〜７０容量％の割合で含有させると、この結果のＴｉ
ＣＮ基サーメットは、上記（ａ）＋（ａ' ）の硬質分散
相と、Ｃｏおよび／またはＮｉを主成分とする金属結合
相との共存によってもたらされるすぐれた靭性を具備し
た上で、上記（ｂ）または（ｂ）＋（ｂ' ）の硬質分散
相によって一段と高硬度をもつようになり、したがって
このＴｉＣＮ基サーメットで構成された切削工具は、断
続切削は勿論のこと、断続切削においても切刃に欠損や
チッピングの発生なく、かつ一段とすぐれた耐摩耗性を
発揮するという研究結果を得たのである。Therefore, the present inventors have
From the above-mentioned viewpoint, the above-mentioned conventional TiCN-based cermet cutting tool was focused on, and as a result of further research for further improving the wear resistance, the above-described conventional TiC-based cermet cutting tool was obtained.
The hard dispersed phase in the TiCN-based cermet that constitutes the N-based cermet cutting tool is (a) having a cored double-phase structure and / or a cored triple-phase structure, and the core portion is made of Ti.
, Cr and / or V, Ta, Nb, Zr, W,
And a hard disperse phase composed of a composite carbonitride solid solution [hereinafter referred to as (Ti, M) CN] with at least one of Mo, and (a ′) above (Ti, M) C having a single-phase structure.
A hard dispersed phase consisting of N, specified above (a) and (a ′), and further as a hard dispersed phase, (b) Cored 2
A hard dispersed phase having a heavy-phase structure and / or a cored triple-phase structure and having a core portion made of TiCN, (b ') a hard dispersed phase made of TiCN having a single-phase structure, and above (b),
Alternatively, the ratio of (b) and (b ') to the total is 2
When the content is 5 to 70% by volume, the Ti
The CN-based cermet has excellent toughness brought about by the coexistence of the hard dispersed phase (a) + (a ′) and the metal bonded phase containing Co and / or Ni as a main component, and further, The hard dispersed phase b) or (b) + (b ') provides an even higher hardness. Therefore, a cutting tool composed of this TiCN-based cermet can be used not only for interrupted cutting but also for interrupted cutting. We obtained the results of research showing that the blade exhibits no wear or chipping, and exhibits superior wear resistance.
【０００５】この発明は、上記の研究結果にもとづいて
なされたものであって、Ｃｏおよび／またはＮｉを主成
分とする金属結合相：５〜３０容量％を含有し、残りが
実質的に硬質分散相からなるＴｉＣＮ基サーメットで構
成された切削工具において、上記硬質分散相を、（ａ）
有芯２重相構造および／または有芯３重相構造を有
し、かつ芯部が（Ｔｉ，Ｍ）ＣＮからなる硬質分散相、
（ａ' ） 単一相構造を有する（Ｔｉ，Ｍ）ＣＮからな
る硬質分散相、（ｂ） 有芯２重相構造および／または
有芯３重相構造を有し、かつ芯部がＴｉＣＮからなる硬
質分散相、（ｂ' ） 単一相構造を有するＴｉＣＮから
なる硬質分散相、以上（ａ），（ａ' ），（ｂ），およ
び（ｂ' ）の硬質分散相において、（ａ）と（ａ' ）と
（ｂ）、あるいは（ａ）と（ａ' ）と（ｂ）と（ｂ' ）
の硬質分散相で構成し、かつ上記（ｂ）、あるいは
（ｂ）と（ｂ' ）の硬質分散相の割合を、全体に占める
割合で、２５〜７０容量％としてなる、すぐれた耐摩耗
性を有し、かつ靭性にもすぐれたＴｉＣＮ基サーメット
製切削工具に特徴を有するものである。The present invention was made based on the above-mentioned research results, and contains a metallic binder phase containing Co and / or Ni as a main component: 5 to 30% by volume, and the rest is substantially hard. In a cutting tool composed of a TiCN-based cermet composed of a dispersed phase, the hard dispersed phase is (a)
A hard dispersed phase having a cored double-phase structure and / or a cored triple-phase structure, and the core portion of which is (Ti, M) CN,
(A ') a hard dispersed phase composed of (Ti, M) CN having a single phase structure, (b) having a cored double-phase structure and / or a cored triplet phase structure, and the core portion of which is TiCN A hard dispersed phase consisting of (b '), a hard dispersed phase composed of TiCN having a single phase structure, and (a), (a'), (b), and (b ') And (a ') and (b) or (a) and (a') and (b) and (b ')
Excellent wear resistance, which is composed of the hard disperse phase (1), and the ratio of the hard disperse phase (b) or (b) and (b ') above is 25 to 70% by volume in the whole. And is characterized by a TiCN-based cermet cutting tool having excellent toughness.
【０００６】なお、この発明の切削工具において、これ
を構成するＴｉＣＮ基サーメットの金属結合相の割合を
５〜３０容量％と限定したのは、その割合が５容量％未
満では所望の靭性を確保することができず、一方その割
合が３０容量％を越えると耐摩耗性が急激に低下するよ
うになるという理由によるものであり、また、上記
（ｂ）、あるいは（ｂ）と（ｂ' ）の硬質分散相の占め
る割合を２５〜７０容量％としたのは、その割合が２５
容量％未満では所望のすぐれた耐摩耗性を得ることがで
きず、一方その割合が７０容量％を越えると靭性が低
下、切刃に欠損やチッピングが発生し易くなるという理
由からである。In the cutting tool of the present invention, the ratio of the metallic binder phase of the TiCN-based cermet constituting the cutting tool is limited to 5 to 30% by volume, and the desired toughness is ensured when the ratio is less than 5% by volume. The reason for this is that if the ratio exceeds 30% by volume, the wear resistance will drop sharply, and the above (b) or (b) and (b ') The ratio of the hard dispersed phase of 25 to 70% by volume is that the ratio is 25
If the content is less than 70% by volume, the desired excellent wear resistance cannot be obtained. On the other hand, if the content exceeds 70% by volume, the toughness is reduced, and chipping and chipping are likely to occur on the cutting edge.
【０００７】[0007]
【実施例】つぎに、この発明の切削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０．５〜
２μｍの範囲内の所定の平均粒径を有する（Ｔｉ，Ｗ）
ＣＮ〔重量比で（以下同じ）、ＴｉＣＮ／ＷＣ＝７０／
３０〕粉末、（Ｔｉ，Ｍｏ）ＣＮ〔ＴｉＣＮ／Ｍｏ2 Ｃ
＝７０／３０〕粉末、（Ｔｉ，Ｔａ）ＣＮ〔ＴｉＣＮ／
ＴａＣ＝７０／３０〕粉末、（Ｔｉ，Ｎｂ）ＣＮ〔Ｔｉ
ＣＮ／ＮｂＣ＝７０／３０〕粉末、（Ｔｉ，Ｖ）ＣＮ
〔ＴｉＣＮ／ＶＣ＝８０／２０〕粉末、（Ｔｉ，Ｚｒ）
ＣＮ〔ＴｉＣＮ／ＺｒＣ＝８０／２０〕粉末、（Ｔｉ，
Ｗ，Ｍｏ）ＣＮ〔ＴｉＣＮ／ＷＣ／Ｍｏ2 Ｃ＝６０／３
０／１０〕粉末、（Ｔｉ，Ｗ，Ｖ）ＣＮ〔ＴｉＣＮ／Ｗ
Ｃ／ＶＣ＝７０／２０／１０〕粉末、（Ｔｉ，Ｍｏ，Ｔ
ａ）ＣＮ〔ＴｉＣＮ／Ｍｏ2 Ｃ／ＴａＣ＝６０／２０／
２０〕粉末、（Ｔｉ，Ｎｂ，Ｖ）ＣＮ〔ＴｉＣＮ／Ｎｂ
Ｃ／ＶＣ＝７０／２０／１０〕粉末、さらにＷＣ粉末、
Ｍｏ2 Ｃ粉末、ＮｂＣ粉末、ＶＣ粉末、Ｃｒ3 Ｃ2 粉
末、ＴａＣ粉末、ＴｉＮ粉末、ＴａＣＮ粉末、ＮｂＣＮ
粉末、ＴｉＣＮ粉末、Ｃｏ粉末、およびＮｉ粉末を用意
し、これら原料粉末を表１，２に示される配合組成に配
合し、ボールミルにて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、
ついで、この圧粉体を、（１） 常温から１１００℃ま
での昇温過程を０．０５〜０．１torrの窒素雰囲気と
し、１１００℃から１４２０〜１６００℃の範囲内の所
定の焼結温度までの昇温過程、前記焼結温度に１時間の
保持過程、および焼結温度保持終了から常温までの冷却
過程を４０〜１００torrの窒素雰囲気とした条件（以
下、窒素雰囲気焼結条件という）、（２） ０．０５〜
０．１torrの真空中、１４２０〜１５００℃の範囲内の
所定温度に１時間保持後冷却の条件（以下、真空焼結条
件という）、以上（１）または（２）の条件で焼結する
ことにより、いずれもＳＮＭＧ４３２の規格に則したス
ローアウエイチップ形状をもった本発明ＴｉＣＮ基サー
メット製切削工具（以下、本発明切削工具という）１〜
１０および比較ＴｉＣＮ基サーメット製切削工具（以
下、比較切削工具という）１〜６をそれぞれ製造した。EXAMPLES Next, the cutting tool of the present invention will be specifically described by way of examples. As raw material powder, 0.5-
Having a predetermined average particle size in the range of 2 μm (Ti, W)
CN [weight ratio (the same applies hereinafter), TiCN / WC = 70 /
30] powder, (Ti, Mo) CN [TiCN / Mo 2 C
= 70/30] powder, (Ti, Ta) CN [TiCN /
TaC = 70/30] powder, (Ti, Nb) CN [Ti
CN / NbC = 70/30] powder, (Ti, V) CN
[TiCN / VC = 80/20] powder, (Ti, Zr)
CN [TiCN / ZrC = 80/20] powder, (Ti,
W, Mo) CN [TiCN / WC / Mo 2 C = 60/3
0/10] powder, (Ti, W, V) CN [TiCN / W
C / VC = 70/20/10] powder, (Ti, Mo, T
a) CN [TiCN / Mo 2 C / TaC = 60/20 /
20] powder, (Ti, Nb, V) CN [TiCN / Nb
C / VC = 70/20/10] powder, and further WC powder,
Mo 2 C powder, NbC powder, VC powder, Cr 3 C 2 powder, TaC powder, TiN powder, TaCN powder, NbCN
Powder, TiCN powder, Co powder, and Ni powder were prepared, and these raw material powders were blended to the blending composition shown in Tables 1 and 2, and wet mixed in a ball mill for 72 hours, dried, and then dried at 1.5 ton / cm. Press-molded into green compact with pressure of 2 ,
Then, (1) the temperature rising process from room temperature to 1100 ° C. was conducted in a nitrogen atmosphere of 0.05 to 0.1 torr to a predetermined sintering temperature within the range of 1100 ° C. to 1420 to 1600 ° C. The temperature increasing process, the sintering temperature holding process for 1 hour, and the cooling process from the end of holding the sintering temperature to room temperature were set to a nitrogen atmosphere of 40 to 100 torr (hereinafter referred to as nitrogen atmosphere sintering conditions), ( 2) 0.05 ~
Hold at a predetermined temperature in the range of 1420 to 1500 ° C. for 1 hour in a vacuum of 0.1 torr and then sinter under the conditions of cooling (hereinafter referred to as vacuum sintering conditions), the above conditions (1) or (2) According to the present invention, the cutting tool made of TiCN-based cermet of the present invention (hereinafter, referred to as the cutting tool of the present invention) having a throwaway tip shape conforming to the standard of SNMG432
10 and comparative TiCN-based cermet cutting tools (hereinafter referred to as comparative cutting tools) 1 to 6 were manufactured.
【０００８】ついで、この結果得られた各種の切削工具
について、これの任意個所を透過型電子顕微鏡により観
察し、画像に現われたそれぞれの硬質分散相の中心部の
全金属成分に占めるＴｉ含有量を測定すると共に、画像
解析装置を併用して、結合相と硬質分散相の割合、さら
に前記硬質分散相における上記（ａ），（ａ' ），
（ｂ），および（ｂ' ）のそれぞれのサーメット全体に
占める割合を測定した。この測定結果を表３〜６に示し
た。また、上記の各種切削工具について、 被削材：ＳＮＣＭ４３９（硬さ：ＨB ２７０）の長さ方
向等間隔３本縦溝入り丸棒、 切削速度：１５０ｍ／min.、 切込み：２．８mm、 送り：０．３mm／rev.、 切削時間：５分、 の条件での鋼の乾式断続切削試験、並びに、 被削材：ＳＮＣＭ４３９（硬さ：ＨB ２７０）の丸棒、 切削速度：２００ｍ／min.、 切込み：２mm、 送り：０．３mm／rev.、 切削時間：２０分、 の条件での鋼の乾式連続切削試験を行ない、いずれの試
験でも切刃の逃げ面摩耗幅を測定した。これらの測定結
果を表７に示した。Next, with respect to various cutting tools obtained as a result, an arbitrary portion of the cutting tools was observed with a transmission electron microscope, and the Ti content in the total metal component at the center of each hard dispersed phase appeared in the image. And the ratio of the binder phase to the hard dispersed phase, and the above (a), (a '),
The proportion of each of (b) and (b ') in the whole cermet was measured. The measurement results are shown in Tables 3 to 6. Further, the above-mentioned various cutting tools, work material: SNCM439 (Hardness: H B 270) in the length direction at equal intervals three longitudinal grooves containing round bar, Cutting speed:. 150 meters / min, cut: 2.8 mm, Feed: 0.3 mm / rev., Cutting time: 5 minutes, Dry intermittent cutting test of steel under the conditions, Work material: SNCM439 (hardness: H B 270) round bar, Cutting speed: 200 m / min., depth of cut: 2 mm, feed: 0.3 mm / rev., cutting time: 20 minutes, a dry continuous cutting test of steel was performed, and the flank wear width of the cutting edge was measured in each test. The results of these measurements are shown in Table 7.
【０００９】[0009]
【表１】 [Table 1]
【００１０】[0010]
【表２】 [Table 2]
【００１１】[0011]
【表３】 [Table 3]
【００１２】[0012]
【表４】 [Table 4]
【００１３】[0013]
【表５】 [Table 5]
【００１４】[0014]
【表６】 [Table 6]
【００１５】[0015]
【表７】 [Table 7]
【００１６】[0016]
【発明の効果】表３〜７に示される結果から、いずれも
芯部が（Ｔｉ，Ｍ）ＣＮからなる有芯２重相構造および
／または有芯３重相構造を有する硬質分散相、あるいは
これと単一相構造を有する（Ｔｉ，Ｍ）ＣＮからなる硬
質分散相で構成された比較切削工具１〜６に比して、本
発明切削工具１〜１０は、いずれもすぐれた靭性をもた
らす上記の芯部が（Ｔｉ，Ｍ）ＣＮからなる有芯２重相
構造および／または有芯３重相構造を有する硬質分散
相、これと単一相構造を有する（Ｔｉ，Ｍ）ＣＮからな
る硬質分散相に加えて、芯部がＴｉＣＮからなる有芯２
重相構造および／または３重相構造を有する硬質分散
相、あるいはこれと単一相構造を有するＴｉＣＮからな
る硬質分散相の共存によって、断続切削および連続切削
のいずれの切断でも切刃に欠損やチッピングの発生な
く、すぐれた耐摩耗性を示すことが明らかである。上述
のように、この発明のＴｉＣＮ基サーメット製切削工具
は、すぐれた耐摩耗性と靭性を兼ね備えているので、連
続切削は勿論のこと、断続切削でも切刃に欠損やチッピ
ングの発生なく、すぐれた耐摩耗性を示し、著しく長期
に亘ってすぐれた切削性能を発揮するのである。From the results shown in Tables 3 to 7, a hard dispersed phase having a core double-phase structure and / or a core triple-phase structure in which the core portion is (Ti, M) CN, or Compared with this and the comparative cutting tools 1 to 6 composed of the hard dispersed phase composed of (Ti, M) CN having a single phase structure, the cutting tools 1 to 10 of the present invention all exhibit excellent toughness. The core portion is composed of a hard dispersed phase having a cored double phase structure and / or a cored triple phase structure composed of (Ti, M) CN, and (Ti, M) CN having a single phase structure. Core 2 made of TiCN in addition to the hard dispersed phase
Due to the coexistence of the hard dispersed phase having a heavy phase structure and / or a triple phase structure or the hard dispersed phase composed of TiCN having a single phase structure, the cutting edge is not damaged or cut in both cutting and continuous cutting. It is clear that it shows excellent wear resistance without chipping. As described above, the cutting tool made of a TiCN-based cermet of the present invention has excellent wear resistance and toughness, so that not only continuous cutting but also intermittent cutting does not cause chipping or chipping on the cutting edge, and is excellent. It has excellent wear resistance and exhibits excellent cutting performance over a remarkably long period.
Claims (2)
金属結合相：５〜３０容量％を含有し、残りが実質的に
硬質分散相からなる炭窒化チタン基サーメットで構成さ
れた切削工具において、上記硬質分散相を、 （ａ） 有芯２重相構造および／または有芯３重相構造
を有し、かつ芯部が、Ｔｉと、Ｃｒおよび／またはＶ
と、Ｔａ，Ｎｂ，Ｚｒ，Ｗ，およびＭｏのうちの１種以
上との複合炭窒化物固溶体からなる硬質分散相、 （ａ' ） 単一相構造を有し、かつＴｉと、Ｃｒおよび
／またはＶと、Ｔａ，Ｎｂ，Ｚｒ，Ｗ，およびＭｏのう
ちの１種以上との複合炭窒化物固溶体からなる硬質分散
相、 （ｂ） 有芯２重相構造および／または有芯３重相構造
を有し、かつ芯部が炭窒化チタンからなる硬質分散相、 以上（ａ），（ａ' ），および（ｂ）で構成し、上記
（ｂ）の硬質分散相の割合を、全体に占める割合で２５
〜７０容量％としたこと、を特徴とする耐摩耗性のすぐ
れた炭窒化チタン基サーメット製切削工具。1. A cutting tool composed of a titanium carbonitride-based cermet containing a metallic binder phase containing Co and / or Ni as a main component: 5 to 30% by volume, and the remainder consisting essentially of a hard dispersed phase. And (a) having a cored double-phase structure and / or a cored triplet phase structure, and the core portion having Ti, Cr and / or V.
And a hard dispersed phase composed of a composite carbonitride solid solution of Ta, Nb, Zr, W, and one or more of Mo, (a ′) having a single-phase structure, and having Ti, Cr, and / or Or a hard dispersed phase composed of a composite carbonitride solid solution of V and one or more of Ta, Nb, Zr, W, and Mo, (b) cored double-phase structure and / or cored triplet phase A hard dispersed phase having a structure and having a core made of titanium carbonitride, comprising the above (a), (a '), and (b). Occupy 25
A cutting tool made of titanium carbonitride-based cermet with excellent wear resistance, characterized in that the content is set to 70% by volume.
金属結合相：５〜３０容量％を含有し、残りが実質的に
硬質分散相からなる炭窒化チタン基サーメットで構成さ
れた切削工具において、上記硬質分散相を、 （ａ） 有芯２重相構造および／または有芯３重相構造
を有し、かつ芯部が、Ｔｉと、Ｃｒおよび／またはＶ
と、Ｔａ，Ｎｂ，Ｚｒ，Ｗ，およびＭｏのうちの１種以
上との複合炭窒化物固溶体からなる硬質分散相、 （ａ' ） 単一相構造を有し、かつＴｉと、Ｃｒおよび
／またはＶと、Ｔａ，Ｎｂ，Ｚｒ，Ｗ，およびＭｏのう
ちの１種以上との複合炭窒化物固溶体からなる硬質分散
相、 （ｂ） 有芯２重相構造および／または有芯３重相構造
を有し、かつ芯部が炭窒化チタンからなる硬質分散相、 （ｂ' ） 単一相構造を有する炭窒化チタンからなる硬
質分散相、 以上（ａ），（ａ' ），（ｂ），および（ｂ' ）で構成
し、上記（ｂ）および（ｂ' ）の硬質分散相の割合を、
全体に占める割合で２５〜７０容量％としたこと、を特
徴とする耐摩耗性のすぐれた炭窒化チタン基サーメット
製切削工具。2. A cutting tool composed of a titanium carbonitride-based cermet containing a metallic binder phase containing Co and / or Ni as a main component: 5 to 30% by volume, and the remainder consisting essentially of a hard dispersed phase. And (a) having a cored double-phase structure and / or a cored triplet phase structure, and the core portion having Ti, Cr and / or V.
And a hard dispersed phase composed of a composite carbonitride solid solution of Ta, Nb, Zr, W, and one or more of Mo, (a ′) having a single-phase structure, and having Ti, Cr, and / or Or a hard dispersed phase composed of a composite carbonitride solid solution of V and one or more of Ta, Nb, Zr, W, and Mo, (b) cored double-phase structure and / or cored triplet phase A hard dispersed phase having a structure and a core made of titanium carbonitride, (b ') a hard dispersed phase made of titanium carbonitride having a single-phase structure, above (a), (a'), (b) , And (b ′), and the proportion of the hard dispersed phase in the above (b) and (b ′) is
A cutting tool made of titanium carbonitride-based cermet with excellent wear resistance, characterized in that the proportion in the whole is 25 to 70% by volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18890694A JP3493587B2 (en) | 1994-07-19 | 1994-07-19 | Titanium carbonitride-based cermet cutting tool with excellent wear resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18890694A JP3493587B2 (en) | 1994-07-19 | 1994-07-19 | Titanium carbonitride-based cermet cutting tool with excellent wear resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0825113A true JPH0825113A (en) | 1996-01-30 |
| JP3493587B2 JP3493587B2 (en) | 2004-02-03 |
Family
ID=16231961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18890694A Expired - Lifetime JP3493587B2 (en) | 1994-07-19 | 1994-07-19 | Titanium carbonitride-based cermet cutting tool with excellent wear resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3493587B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000328169A (en) * | 1999-05-03 | 2000-11-28 | Sandvik Ab | Titanium-based carbonitride alloy |
| JP2000336450A (en) * | 1999-05-03 | 2000-12-05 | Sandvik Ab | Titanium-based carbonitride alloy |
| JP2000345275A (en) * | 1999-05-03 | 2000-12-12 | Sandvik Ab | Titanium-based carbonitride alloy |
-
1994
- 1994-07-19 JP JP18890694A patent/JP3493587B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000328169A (en) * | 1999-05-03 | 2000-11-28 | Sandvik Ab | Titanium-based carbonitride alloy |
| JP2000336450A (en) * | 1999-05-03 | 2000-12-05 | Sandvik Ab | Titanium-based carbonitride alloy |
| JP2000345275A (en) * | 1999-05-03 | 2000-12-12 | Sandvik Ab | Titanium-based carbonitride alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3493587B2 (en) | 2004-02-03 |
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