JP3493587B2 - Titanium carbonitride-based cermet cutting tool with excellent wear resistance - Google Patents
Titanium carbonitride-based cermet cutting tool with excellent wear resistanceInfo
- Publication number
- JP3493587B2 JP3493587B2 JP18890694A JP18890694A JP3493587B2 JP 3493587 B2 JP3493587 B2 JP 3493587B2 JP 18890694 A JP18890694 A JP 18890694A JP 18890694 A JP18890694 A JP 18890694A JP 3493587 B2 JP3493587 B2 JP 3493587B2
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- Prior art keywords
- phase
- hard dispersed
- cored
- dispersed phase
- phase structure
- 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.)
- Expired - Lifetime
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Description
【発明の詳細な説明】
【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。
【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、容量％（以下、％は容量％を示す）で、
（１）Ｃｏおよび／またはＮｉを主成分とする金属結合
相：５〜３０％、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：実質的に残り、からなる
組成を有するＴｉＣＮ基サーメット、
（２）Ｃｏおよび／またはＮｉを主成分とする金属結合
相：５〜３０％、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と、単一相構造を有する
（Ｔｉ，Ｍ′）ＣＮからなる硬質分散相：実質的に残
り、からなる組成を有するＴｉＣＮ基サーメット、以上
（１）または（２）の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。
【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。
【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、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Ｍ
ｏ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［記号
（ａ）で示す］、単一相構造を有する上記（Ｔｉ，Ｍ）
ＣＮからなる硬質分散相［記号（ａ’）で示す］、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、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［記
号（ｂ）で示す］、を含有させて、ＴｉＣＮ基サーメッ
トを、いずれも全体に占める割合で、Ｃｏおよび／また
はＮｉを主成分とする金属結合相：８〜２３％、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）：２８〜６４
％、であり、残りが単一相構造を有する（Ｔｉ，Ｍ）Ｃ
Ｎからなる硬質分散相（ａ’）と、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）からなり、前記硬質
分散相（ａ’）の割合が５〜１８％、前記硬質分散相
（ａ）の割合が８〜４９％である組成を有するＴｉＣＮ
基サーメット、で構成すると、この結果のＴｉＣＮ基サ
ーメットは、上記（ａ）と（ａ’）の硬質分散相と、Ｃ
ｏ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、
上記の（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。
【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、全体に占める割合で、Ｃｏおよ
び／またはＮｉを主成分とする金属結合相：８〜２３
％、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）：２
８〜６４％、であり、残りが単一相構造を有する（Ｔ
ｉ，Ｍ）ＣＮからなる硬質分散相（ａ’）と、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）からな
り、前記硬質分散相（ａ’）の割合が５〜１８％、前記
硬質分散相（ａ）の割合が８〜４９％である組成を有す
るＴｉＣＮ基サーメット、で構成してなる、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。
【０００６】なお、この発明の切削工具において、これ
を構成するＴｉＣＮ基サーメットにおいて、金属結合相
の割合を８〜２３％と限定したのは、その割合が８％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２３％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る。また、上記硬質分散
相（ｂ）の占める割合を２８〜６４％としたのは、いず
れの場合も、その割合が前記下限値未満では所望のすぐ
れた耐摩耗性を得ることができず、一方その割合が前記
上限値を越えると、靭性が低下し、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。
【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，Ｍｏ，Ｔａ）ＣＮ〔ＴｉＣＮ
／Ｍｏ2 Ｃ／ＴａＣ＝６０／２０／２０〕粉末、さらに
ＷＣ粉末、Ｍｏ2 Ｃ粉末、ＮｂＣ粉末、ＶＣ粉末、Ｃｒ
3 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１４２
０〜１６００℃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、１４２０〜１
５００℃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ＳＮＭＧ
４３２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）１〜４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）１〜３を
それぞれ製造した。
【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’）、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２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３に示した。
【０００９】
【表１】【００１０】
【表２】【００１１】
【表３】【００１２】
【発明の効果】表２，３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（ａ）と単
一相構造を有する（Ｔｉ，Ｍ）ＣＮからなる硬質分散相
（ａ’）で構成された比較切削工具１〜３に比して、本
発明切削工具１〜４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
（ａ）と、単一相構造を有する（Ｔｉ，Ｍ）ＣＮからな
る硬質分散相（ａ’）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（ｂ）の共存によって、断続切削および連続切
削のいずれの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。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has excellent wear resistance and excellent toughness. Therefore, for example, not only continuous cutting of steel but also intermittent cutting. It relates to a cermet-based cermet-based cutting tool that exhibits excellent cutting performance over a long period of time without causing chipping or chipping (small chipping) on the cutting edge when used for is there. 2. Description of the Related Art Conventionally, for example, Japanese Patent Application Laid-Open No. Sho 62-170452
As described in Japanese Unexamined Patent Publication (Kokai) No. 63-83241, and the like, (1) a metal binding phase mainly containing Co and / or Ni: 5-30%, cored double phase structure and / or cored 3
A complex carbonitride solid solution having a heavy phase structure and having a core portion of Ti and one or more of the elements of Groups 4a, 5a and 6a of the periodic table excluding Ti [hereinafter, (Ti, M ´) CN
A hard dispersed phase consisting essentially of: a TiCN-based cermet having a composition consisting essentially of (2) a metal binding phase containing Co and / or Ni as a main component: 5 to 30%, a cored double phase Structure and / or cored 3
A complex carbonitride solid solution having a heavy phase structure and having a core portion of Ti and one or more of the elements of Groups 4a, 5a and 6a of the periodic table excluding Ti [hereinafter, (Ti, M ') CN
And a hard dispersed phase consisting of (Ti, M ') CN having a single-phase structure: a TiCN-based cermet substantially having a composition consisting of: (1) or (2) A cutting tool composed of a TiCN-based cermet is used for continuous cutting or interrupted cutting of steel, for example. [0003] On the other hand, with the recent trend toward FA and labor saving in cutting work, cutting tools have been required to further extend the service life.
N-base cermet cutting tools have excellent toughness. For example, intermittent cutting of steel does not cause chipping or chipping on the cutting edge.However, wear progresses relatively quickly, so it is used for short-time cutting. At present, the life is reached. [0004] Accordingly, the present inventors have proposed:
From the above-mentioned viewpoint, the above-mentioned conventional TiCN-based cermet cutting tool has been focused on, and as a result of further research for further improving the wear resistance, the above-described conventional TiC-based cermet cutting tool has been obtained.
The hard dispersed phase in the TiCN-based cermet constituting the cutting tool made of the N-based cermet has a cored double-phase structure and / or a cored triple-phase structure, and the core is composed of Ti and Cr.
And / or V, Ta, Nb, Zr, W, and M
a complex carbonitride solid solution with at least one of
(Ti, M) CN], a hard dispersed phase [shown by the symbol (a)], which has a single-phase structure (Ti, M)
A hard dispersed phase composed of CN [indicated by the symbol (a ')], specified above as (a) and (a'), and further as a hard dispersed phase, a cored double phase structure and / or a cored triple phase A hard dispersed phase (shown by symbol (b)) having a phase structure and a core portion made of TiCN, and containing Co and / or Ni mainly in a proportion of the whole TiCN-based cermet. Metal binding phase as a component: 8 to 23%, cored 2
Hard dispersed phase (b) having a heavy-phase structure and / or a cored triple-phase structure and having a core of TiCN: 28 to 64
%, And the remainder having a single-phase structure (Ti, M) C
N, a hard dispersed phase (a ') composed of N, a cored double phase structure and / or a cored triple phase structure, and the core portion is composed of (Ti,
M) TiCN comprising a hard dispersed phase (a) composed of CN, wherein the proportion of the hard dispersed phase (a ') is 5 to 18% and the proportion of the hard dispersed phase (a) is 8 to 49%.
Cermet, the resulting TiCN-based cermet comprises the hard dispersed phase of (a) and (a ')
Having excellent toughness brought about by coexistence with a metal binder phase mainly composed of o and / or Ni,
The hard disperse phase of the above (b) further increases the hardness, so that the cutting tool composed of this TiCN-based cermet not only cuts intermittently but also cuts or generates chipping on the cutting edge even in intermittent cutting. A study result was obtained that exhibited no wear and exhibited even better wear resistance. The present invention has been made on the basis of the above research results, and shows a metal binding phase containing Co and / or Ni as a main component in a proportion of 8 to 23 in the whole.
%, A hard dispersed phase (b) having a cored double phase structure and / or a cored triple phase structure and having a core portion of TiCN: 2
8 to 64%, with the remainder having a single-phase structure (T
a hard dispersed phase (a ′) composed of (i, M) CN, and a hard dispersed phase having a cored double phase structure and / or a cored triple phase structure and having a core portion of (Ti, M) CN (A), wherein the ratio of the hard dispersed phase (a ') is 5 to 18%, and the ratio of the hard dispersed phase (a) is 8 to 49%. The present invention is characterized by a TiCN-based cermet cutting tool having excellent wear resistance and excellent toughness. In the cutting tool of the present invention, in the TiCN-based cermet constituting the cutting tool, the ratio of the metal binding phase is limited to 8 to 23%. If the ratio is less than 8%, desired toughness is secured. On the other hand, when the ratio exceeds 23%, the wear resistance rapidly decreases. Further, the reason why the ratio of the hard dispersed phase (b) occupies 28 to 64% is that in any case, if the ratio is less than the lower limit, a desired excellent wear resistance cannot be obtained. If the ratio exceeds the above upper limit, the toughness is reduced, and chipping and chipping are likely to occur on the cutting edge. Next, a cutting tool according to the present invention will be described in detail with reference to examples. As raw material powder, all 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, Mo, Ta) CN [TiCN
/ Mo 2 C / TaC = 60/20/20] powder, 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 in the composition shown in Tables 1 and 2, wet-mixed in a ball mill for 72 hours, dried, and dried at 1.5 ton / The green compact was press-molded at a pressure of cm 2 , and the green compact was subjected to (1) a process of raising the temperature from room temperature to 1100 ° C.
~ 0.1torr nitrogen atmosphere, from 1100 ℃ to 142
The process of raising the temperature to a predetermined sintering temperature in the range of 0 to 1600 ° C., the process of holding the sintering temperature for one hour, and the process of cooling from the end of holding the sintering temperature to room temperature are performed in a nitrogen atmosphere of 40 to 100 torr (Hereinafter referred to as nitrogen atmosphere sintering conditions), (2) in a vacuum of 0.05 to 0.1 torr,
After holding at a predetermined temperature in the range of 500 ° C. for one hour and then sintering under cooling conditions (hereinafter referred to as vacuum sintering conditions) or above (1) or (2), all of them are SNMG.
Cutting tools made of TiCN-based cermet of the present invention (hereinafter, referred to as cutting tools of the present invention) 1 to 4 and cutting tools made of comparative cermet of TiCN-based cermet (hereinafter, referred to as comparative cutting tools) 1 having a throwaway tip shape conforming to the standard of 432 To 3 were each manufactured. Next, with respect to the various cutting tools obtained as a result, arbitrary portions of the cutting tools were 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 and the hard dispersed phase, and the ratio of the above (a), (a '), and (b) to the entire cermet in the hard dispersed phase. Was measured. The measurement results are shown in Table 2. 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:. dry interrupted cutting test of steel in 5 minutes, conditions as well as work material: SNCM439 (hardness: H B 270) round bar, cutting speed: 200 meters / Min., depth of cut: 2 mm, feed: 0.3 mm / rev., cutting time: 20 minutes, dry continuous cutting test of steel was performed, and the flank wear width of the cutting edge was measured in each test. Table 3 shows the results of these measurements. [Table 1] [Table 2] [Table 3] From the results shown in Tables 2 and 3, hard dispersion having a cored double-phase structure and / or a cored triple-phase structure in which the core is (Ti, M) CN is shown. Compared with the comparative cutting tools 1 to 3 composed of the hard dispersed phase (a ′) composed of the phase (a) and (Ti, M) CN having a single-phase structure, the cutting tools 1 to 4 of the present invention are: The hard dispersed phase (a) having a cored double-phase structure and / or a cored triple-phase structure in which the above-mentioned core portion, which provides excellent toughness, is made of (Ti, M) CN, and a single-phase structure. In addition to the hard dispersed phase (a ′) composed of (Ti, M) CN and the hard dispersed phase (b) having a cored double-phase structure and / or triple-phase structure composed of TiCN, , No breakage or chipping on the cutting edge in any of intermittent and continuous cutting It is evident to exhibit abrasion resistance. As described above, the cutting tool made of a TiCN-based cermet according to the present invention has excellent wear resistance and toughness. It shows excellent wear resistance and exhibits excellent cutting performance over a remarkably long period.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小谷 二郎 茨城県結城郡石下町大字古間木1511番地 三菱マテリアル株式会社 筑波製作所 内 (56)参考文献 特開 平６−158213（ＪＰ，Ａ) ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Jiro Kotani 1511 Furamagi, Ishishita-cho, Yuki-gun, Ibaraki Prefecture Mitsubishi Materials Corporation Tsukuba Plant Inside (56) References JP-A-6-158213 (JP, A)
Claims (1)
〜２３％、 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）：２
８〜６４％、 であり、残りが単一相構造を有し、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（ａ’）と、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）からなり、前記硬質分散相（ａ’）の割合が５〜
１８％、前記硬質分散相（ａ）の割合が８〜４９％であ
る組成を有する炭窒化チタン基サーメットで構成したこ
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。(57) [Claims 1] A metal binding phase containing Co and / or Ni as a main component in a proportion (volume%) of the whole: 8
~ 23%, having a cored dual phase structure and / or a cored triple phase structure,
Hard dispersed phase (b) whose core is made of titanium carbonitride: 2
8 to 64%, with the remainder having a single-phase structure, and Ti, Cr and / or V, Ta, Nb, Zr, W, and Mo.
A hard dispersed phase (a ') composed of a composite carbonitride solid solution with at least one of the following, and having a cored double phase structure and / or a cored triple phase structure, and a core portion comprising Ti , Cr and / or
Or a hard dispersed phase (a) composed of a complex carbonitride solid solution of V and one or more of Ta, Nb, Zr, W, and Mo, wherein the ratio of the hard dispersed phase (a ') is 5 ~
A cutting tool made of titanium carbonitride-based cermet having excellent wear resistance, comprising a titanium carbonitride-based cermet having a composition in which the ratio of the hard dispersed phase (a) is 8 to 49%.
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 JPH0825113A (en) | 1996-01-30 |
| JP3493587B2 true 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) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE519832C2 (en) * | 1999-05-03 | 2003-04-15 | Sandvik Ab | Titanium-based carbonitride alloy with binder phase of cobalt for easy finishing |
| SE519834C2 (en) * | 1999-05-03 | 2003-04-15 | Sandvik Ab | Titanium-based carbonitride alloy with binder phase of cobalt for tough machining |
-
1994
- 1994-07-19 JP JP18890694A patent/JP3493587B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0825113A (en) | 1996-01-30 |
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