JPH06172911A - Cutting tool made of zirconium carbonitride-based cermet excellent in wear resistance and chipping resistance - Google Patents
Cutting tool made of zirconium carbonitride-based cermet excellent in wear resistance and chipping resistanceInfo
- Publication number
- JPH06172911A JPH06172911A JP35038192A JP35038192A JPH06172911A JP H06172911 A JPH06172911 A JP H06172911A JP 35038192 A JP35038192 A JP 35038192A JP 35038192 A JP35038192 A JP 35038192A JP H06172911 A JPH06172911 A JP H06172911A
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- cutting tool
- based cermet
- resistance
- zrcn
- 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)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、すぐれた耐摩耗性と
耐欠損性を有し、したがって連続切削は勿論のこと、例
えば鋼の湿式断続切削に用いた場合にも切刃に欠けやチ
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ジルコニウム（以下、
ＺｒＣＮ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 chipping resistance. Therefore, when used for continuous cutting as well as wet cutting of steel, for example, the cutting edge is chipped or chipped. Zirconium carbonitride (hereinafter,
ZrCN) base cermet cutting tool.
【０００２】[0002]
【従来の技術】従来、鋼やダクタイル鋳鉄などの切削
に、例えば特開昭５２−９４８１４号公報に記載される
通り、重量％で（以下、％は重量％を示す）、 Ｎｉを主成分とする結合相：１０〜４９％、 ＴｉＣＮからなる分散相：残り、 からなる組成を有するＴｉＣＮ基サーメットで構成され
たＴｉＣＮ基サーメット製切削工具が用いられている。2. Description of the Related Art Conventionally, for cutting steel, ductile cast iron, etc., as described in, for example, JP-A-52-94814, by weight% (hereinafter,% means% by weight), Ni is a main component. There is used a cutting tool made of TiCN-based cermet composed of a TiCN-based cermet having a composition of a binder phase of 10 to 49%, a dispersed phase of TiCN: the rest.
【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化はめざましく、かつ省力化に対する要求も一段
と厳しさを増す状況にあり、したがって連続切削は勿論
のこと、断続切削でもすぐれた切削性能を長期に亘って
発揮する切削工具が求められる傾向にあるが、上記の従
来ＴｉＣＮ基サーメット製切削工具の場合、相対的に結
合相形成成分の含有割合が高いために、強度および靭性
が要求される、例えば鋼の乾式断続切削では比較的すぐ
れた耐摩耗性を示すものの、特に耐熱衝撃性が要求され
る、例えば鋼の湿式断続切削に用いた場合に、切刃に欠
けやチッピングなどが発生し易く、かつ連続切削でも上
記の通り結合相形成成分の含有割合が相対的に高いため
に十分満足する耐摩耗性を発揮することができないのが
現状である。On the other hand, in recent years FA cutting has been remarkably changed to FA, and the demand for labor saving is becoming more severe. Therefore, not only continuous cutting but also intermittent cutting is excellent. There is a tendency for a cutting tool to exhibit performance over a long period of time, but in the case of the conventional TiCN-based cermet cutting tool described above, strength and toughness are required due to the relatively high content of the binder phase forming component. For example, although it shows relatively excellent wear resistance in dry interrupted cutting of steel, especially when it is used for wet interrupted cutting of steel that requires thermal shock resistance, chipping or chipping of the cutting edge may occur. At present, it is difficult to exhibit satisfactory wear resistance because the content of the binder phase forming component is relatively high as described above even if it is easily generated.
【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、すぐれた耐摩耗性と耐欠損性の
両方を具備したサーメット製切削工具を開発すべく研究
を行なった結果、 （ａ） サーメットの主要構成成分を炭窒化ジルコニウ
ム（以下、ＺｒＣＮで示す）とし、従来サーメットの結
合相形成成分の含有割合である１０〜４９％を８％以下
に低くすれば耐摩耗性が著しく向上するようになるが、
このように低い結合相形成成分の含有量では良好な焼結
性を確保することができなくなり、強度および靭性の低
下が著しいこと。 （ｂ） しかし、ＺｒＣＮ基サーメットに、酸化ジルコ
ニウム（以下、ＺｒＯ2 で示す）および／または安定化
ＺｒＯ2 を５〜３０％の割合で含有させると、結合相形
成成分の含有量が８％以下となってもすぐれた焼結性を
確保することができ、高強度および高靭性を具備するよ
うになること。 （ｃ） さらに、上記の通り結合相形成成分の含有量を
８％以下とし、かつＺｒＯ2 および／または安定化Ｚｒ
Ｏ2 を含有させたＺｒＣＮ基サーメットに、Ｍｏ，Ｗ，
Ｖ，Ｓｉ，およびＢの炭化物、酸化アルミニウム、並び
にＴｉおよびＺｒのほう化物（以下、それぞれＭｏ
2 Ｃ，ＷＣ，ＶＣ，ＳｉＣ，Ｂ4 Ｃ，Ａｌ2Ｏ3 ，Ｔｉ
Ｂ2 ，およびＺｒＢ2 で示し、これらを総称して耐熱衝
撃性向上成分という）のうちの１種以上を１〜３０％の
割合で含有させると、耐熱衝撃性が一段と向上するよう
になり、この結果のＺｒＣＮ基サーメットで構成された
切削工具は、例えば鋼の乾式断続切削は勿論のこと、耐
熱衝撃性が要求される、例えば鋼の湿式断続切削に用い
た場合にも切刃に欠けやチッピングの発生なく、すぐれ
た耐欠損性を示すこと。 以上（ａ）〜（ｃ）に示される研究結果を得たのであ
る。Therefore, the present inventors have
From the above viewpoints, as a result of research to develop a cermet cutting tool having both excellent wear resistance and fracture resistance, (a) the main constituent components of cermet are zirconium carbonitride (hereinafter, ZrCN)), and if the content ratio of the binder phase forming component of the conventional cermet of 10 to 49% is lowered to 8% or less, the wear resistance is remarkably improved.
With such a low content of the binder phase forming component, it becomes impossible to secure good sinterability, and the strength and toughness significantly decrease. (B) However, when zirconium oxide (hereinafter referred to as ZrO 2 ) and / or stabilized ZrO 2 is contained in the ZrCN-based cermet in a proportion of 5 to 30%, the content of the binder phase forming component is 8% or less. However, excellent sinterability can be secured, and high strength and high toughness can be provided. (C) Further, as described above, the content of the binder phase forming component is 8% or less, and ZrO 2 and / or stabilized Zr is contained.
The ZrCN-based cermet containing O 2 is coated with Mo, W,
Carbides of V, Si, and B, aluminum oxide, and borides of Ti and Zr (hereinafter Mo, respectively).
2 C, WC, VC, SiC, B 4 C, Al 2 O 3 , Ti
B 2 and ZrB 2, which are collectively referred to as “heat shock resistance improving components”, are contained in a proportion of 1 to 30%, and the heat shock resistance is further improved. The cutting tool composed of the ZrCN-based cermet resulting from this requires not only dry interrupted cutting of steel but also thermal shock resistance, for example, when used for wet interrupted cutting of steel, the cutting edge is not chipped. Excellent chipping resistance without chipping. The research results shown in (a) to (c) above were obtained.
【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、結合相形成成分としてＣｏおよ
び／またはＮｉ：０．２〜８％、を含有し、さらに以下
いずれも分散相形成成分として、ＺｒＯ2 および／また
は安定化ＺｒＯ2 ：５〜３０％、Ｍｏ2 Ｃ，ＷＣ，Ｖ
Ｃ，ＳｉＣ，Ｂ4 Ｃ，Ａｌ2 Ｏ3 ，ＴｉＢ2 ，およびＺ
ｒＢ2 のうちの１種または２種以上からなる耐熱衝撃性
向上成分：１〜３０％、を含有し、残りがＺｒＣＮから
なる配合組成を有するＺｒＣＮ基サーメットで構成され
た耐摩耗性および耐欠損性にすぐれたＺｒＣＮ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 Co and / or Ni: 0.2 to 8% as a binder phase forming component. As a component, ZrO 2 and / or stabilized ZrO 2 : 5 to 30%, Mo 2 C, WC, V
C, SiC, B 4 C, Al 2 O 3 , TiB 2 , and Z
Abrasion resistance and chipping resistance composed of a ZrCN-based cermet containing 1 to 30% of thermal shock resistance-improving component of 1 or 2 or more of rB 2 and the balance of ZrCN. It is characterized by a ZrCN-based cermet cutting tool with excellent properties.
【０００６】づきに、この発明の切削工具において、こ
れを構成するＺｒＣＮ基サーメットの組成を上記の通り
に限定した理由を説明する。 （ａ） ＣｏおよびＮｉ これらの成分には、焼結性を向上させ、かつ焼結後は結
合相を形成して強度および靭性を向上させる作用がある
が、その含有量が０．２％未満では上記作用に所望の効
果が得られず、一方その含有量が８％を越えると耐摩耗
性が低下するようになることから、その含有量を０．２
〜８％と定めた。Next, the reason why the composition of the ZrCN-based cermet constituting the cutting tool of the present invention is limited as described above will be explained. (A) Co and Ni These components have the effects of improving sinterability and forming a binder phase after sintering to improve strength and toughness, but their content is less than 0.2%. However, the desired effect cannot be obtained in the above-mentioned action, and if the content exceeds 8%, the wear resistance tends to decrease.
It was set at ~ 8%.
【０００７】（ｂ） ＺｒＯ2 および安定化ＺｒＯ2 ここで云うＺｒＯ2 は純ＺｒＯ2 を意味し、また安定化
ＺｒＯ2 は、Ｙ，Ｃａ，Ｍｇ，および希土類元素の酸化
物のうちの１種以上を、通常１〜１０％の割合で固溶し
たＺｒＯ2 を意味するものであり、これらの成分には、
上記の通り焼結性を著しく向上させる作用があり、した
がって結合相形成成分の含有量を８％以下にしてもすぐ
れた焼結性を確保できるので、十分な強度と靭性が得ら
れ、しかもこのような結合相含有量の低減により一段と
すぐれた耐摩耗性を具備するようになるが、その含有量
が５％未満では前記作用に所望の効果が得られず、一方
その含有量が３０％を越えると耐摩耗性が低下するよう
になることから、その含有量を５〜３０％と定めた。[0007] (b) ZrO 2 and ZrO 2 which stabilized ZrO 2 referred to here means pure ZrO 2, also stabilized ZrO 2 is, Y, Ca, Mg, and one of the oxides of rare earth elements The above means ZrO 2 which is usually dissolved in a proportion of 1 to 10%, and these components include
As described above, it has the effect of remarkably improving the sinterability. Therefore, even if the content of the binder phase forming component is 8% or less, excellent sinterability can be secured, so that sufficient strength and toughness can be obtained. By reducing the content of the binder phase as described above, the wear resistance is further improved, but if the content is less than 5%, the desired effect on the above-mentioned action cannot be obtained, while the content is less than 30%. If the content exceeds the above range, the wear resistance will decrease, so the content was defined as 5 to 30%.
【０００８】（ｃ） 耐熱衝撃性向上成分 Ｍｏ2 Ｃ，ＷＣ，ＶＣ，ＳｉＣ，Ｂ4 Ｃ，Ａｌ2 Ｏ3 ，
ＴｉＢ2 ，およびＺｒＢ2 成分には、いずれも耐熱衝撃
性を向上させ、もって熱衝撃負荷のきわめて高い、例え
ば鋼の湿式断続切削にもすぐれた耐欠損性を発揮する作
用があるが、その含有量が１％未満では前記作用の所望
の効果が得られず、一方その含有量が３０％を越えると
耐摩耗性が低下するようになることから、その含有量を
１〜３０％と定めた。(C) Thermal shock resistance improving component Mo 2 C, WC, VC, SiC, B 4 C, Al 2 O 3 ,
The TiB 2 and ZrB 2 components both have the effect of improving the thermal shock resistance, and thus exhibiting an extremely high thermal shock load, for example, excellent fracture resistance even in wet interrupted cutting of steel. If the amount is less than 1%, the desired effect of the above-mentioned action cannot be obtained, while if the content exceeds 30%, the wear resistance tends to decrease, so the content was defined as 1 to 30%. .
【０００９】[0009]
【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ＺｒＣＮ粉
末、Ｍｏ2 Ｃ粉末、ＷＣ粉末、ＶＣ粉末、ＳｉＣ粉末、
Ｂ4 Ｃ粉末、Ａｌ2 Ｏ3 粉末、ＴｉＢ2 粉末、ＺｒＢ2
粉末、Ｃｏ粉末、およびＮｉ粉末、さらにいずれも０．
１〜０．５μｍの範囲内の所定の平均粒径を有するＺｒ
Ｏ2 粉末、Ｙ2 Ｏ3 ：２％含有の安定化ＺｒＯ2 （以
下、Ａという）粉末、ＭｇＯ：４％含有の安定化ＺｒＯ
2 （以下、Ｂという）粉末、ＣａＯ：６％含有の安定化
ＺｒＯ2 （以下、Ｃという）粉末、およびＣｅＯ2 ：１
０％含有の安定化ＺｒＯ2（以下、Ｄという）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、ボールミルで７２時間湿式混合し、乾燥した
後、１ton ／cm2 の圧力で圧粉体にプレス成形し、この
圧粉体を、窒素雰囲気中、１６００〜１８００℃の範囲
内の所定温度に２時間保持の条件で焼結し、引続いてＡ
ｒガスを用い、圧力：１０００気圧、温度：１４５０〜
１６００℃、時間：１時間の条件でＨＩＰ処理を施すこ
とによりＪＩＳ・ＳＮＧＮ１２０４０８のスローアウェ
イチップ形状をもった本発明ＺｒＣＮ基サーメット製切
削工具（以下、本発明切削工具という）１〜１７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-
ZrCN powder, Mo 2 C powder, WC powder, VC powder, SiC powder having a predetermined average particle size within the range of 2 μm,
B 4 C powder, Al 2 O 3 powder, TiB 2 powder, ZrB 2
Powder, Co powder, and Ni powder, each of which has a value of 0.
Zr having a predetermined average particle size within the range of 1 to 0.5 μm
O 2 powder, Y 2 O 3 : 2% stabilized ZrO 2 (hereinafter referred to as A) powder, MgO: 4% stabilized ZrO
2 (hereinafter referred to as B) powder, stabilized ZrO 2 (hereinafter referred to as C) powder containing 6% of CaO, and CeO 2 : 1
Stabilized ZrO 2 (hereinafter referred to as D) powder containing 0% was prepared, these raw material powders were compounded into the compounding compositions shown in Tables 1 and 2, wet-mixed in a ball mill for 72 hours, dried, and then 1 ton / The green compact is press-formed with a pressure of cm 2 and the green compact is sintered in a nitrogen atmosphere at a predetermined temperature within a range of 1600 to 1800 ° C. for 2 hours, and then A
Using r gas, pressure: 1000 atm, temperature: 1450-
The ZrCN-based cermet cutting tools of the present invention (hereinafter referred to as the present invention's cutting tools) 1 to 17 having JIS A / SNGN120408 throw-away tip shapes are manufactured by HIP treatment at 1600 ° C. for 1 hour. did.
【００１０】また、比較の目的で、平均粒径：１．６μ
ｍのＴｉＣＮ粉末および同１．２μｍのＮｉ粉末を用
い、表２に示される配合組成とし、焼結条件を、窒素雰
囲気中、温度：１４５０℃に２時間保持の条件とし、か
つＨＩＰ処理を行なわない以外は同一の条件で従来Ｔｉ
ＣＮ基サーメット製切削工具（以下、従来切削工具とい
う）１〜５をそれぞれ製造した。For comparison purposes, the average particle size is 1.6 μm.
m TiCN powder and the same 1.2 μm Ni powder were used, the composition was as shown in Table 2, the sintering conditions were nitrogen atmosphere, temperature: 1450 ° C. for 2 hours, and HIP treatment was performed. Conventional Ti under the same conditions except no
CN-based cermet cutting tools (hereinafter referred to as conventional cutting tools) 1 to 5 were manufactured.
【００１１】つぎに、この結果得られた各種の切削工具
について、 被削材：ＳＣＭ４４０（硬さ：ＨB ２４０）の丸棒、 切削速度：３３０ｍ／min.、 切込み：１．５mm、 送り：０．３mm／rev.、 切削時間：２０分、の条件での鋼の乾式連続高速切削試
験、 被削材：ＳＮＣＭ４３９（硬さ：ＨB ２００）の長さ方
向等間隔４本縦溝入丸棒、 切削速度：３９０ｍ／min.、 切込み：１mm、 送り：０．２２mm／rev.、 切削油：使用 切削時間：１０分、 の条件での鋼の湿式断続切削試験を行ない、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。Next, regarding the various cutting tools obtained as a result, the work material: a round bar of SCM440 (hardness: H B 240), cutting speed: 330 m / min., Depth of cut: 1.5 mm, feed: Dry continuous high-speed cutting test of steel under the conditions of 0.3 mm / rev., Cutting time: 20 minutes, work material: SNCM439 (hardness: H B 200), with four longitudinal grooves at regular intervals Rod, Cutting speed: 390 m / min., Depth of cut: 1 mm, Feed: 0.22 mm / rev., Cutting oil: Used Cutting time: 10 minutes, Wet intermittent cutting test of steel is performed, and escape of cutting edge The surface wear width was measured. The results of these measurements are shown in Table 3.
【００１２】[0012]
【表１】 [Table 1]
【００１３】[0013]
【表２】 [Table 2]
【００１４】[0014]
【表３】 [Table 3]
【００１５】[0015]
【発明の効果】表１〜３に示される結果から、本発明切
削工具１〜１７は、いずれも連続切削では従来切削工具
１〜５に比して一段とすぐれた耐摩耗性を示し、また熱
衝撃の厳しい湿式断続切削試験でも切刃に欠けやチッピ
ングの発生なく、すぐれた耐欠損性を示すのに対して、
従来切削工具１〜５はいずれも比較的短時間で切刃に欠
けやチッピングが発生し、使用寿命に至ることが明らか
である。上述のように、この発明のＺｒＣＮ基サーメッ
ト製切削工具は、すぐれた耐摩耗性と耐欠損性を合せも
つので、例えば鋼や鋳鉄の連続切削は勿論のこと、特に
熱衝撃の強い湿式断続切削においてもすぐれた切削性能
を長期に亘って発揮するのである。From the results shown in Tables 1 to 3, the cutting tools 1 to 17 of the present invention all show further excellent wear resistance in continuous cutting as compared with the conventional cutting tools 1 to 5, and also have excellent heat resistance. In the wet intermittent cutting test with severe impact, the cutting edge does not show chipping or chipping and shows excellent chipping resistance.
It is clear that all of the conventional cutting tools 1 to 5 have a cutting edge chipping or chipping in a relatively short time and reach the end of their service life. As described above, the ZrCN-based cermet cutting tool of the present invention has excellent wear resistance and fracture resistance, and therefore, for example, not only continuous cutting of steel and cast iron but also wet intermittent cutting with particularly strong thermal shock. Even in this, excellent cutting performance is exhibited over a long period of time.
Claims (1)
よび／またはＮｉ：０．２〜８％、を含有し、さらに以
下いずれも分散相形成成分として、 酸化ジルコニウムおよび／または安定化酸化ジルコニウ
ム：５〜３０％、 Ｍｏ，Ｗ，Ｖ，Ｓｉ，およびＢの炭化物、酸化アルミニ
ウム、並びにＴｉおよびＺｒのほう化物のうちの１種ま
たは２種以上：１〜３０％、を含有し、残りが炭窒化ジ
ルコニウムからなる配合組成を有する炭窒化ジルコニウ
ム基サーメットで構成したことを特徴とする耐摩耗性お
よび耐欠損性のすぐれた炭窒化ジルコニウム基サーメッ
ト製切削工具。1. Zinc oxide and / or stabilized zirconium oxide as a dispersed phase forming component, containing Co and / or Ni: 0.2 to 8% by weight as a binder phase forming component. : 5 to 30%, one or more of carbides of Mo, W, V, Si, and B, aluminum oxide, and borides of Ti and Zr: 1 to 30%, and the rest A zirconium carbonitride-based cermet cutting tool having excellent wear resistance and fracture resistance, which is characterized by being composed of a zirconium carbonitride-based cermet having a compounding composition of zirconium carbonitride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35038192A JPH06172911A (en) | 1992-12-03 | 1992-12-03 | Cutting tool made of zirconium carbonitride-based cermet excellent in wear resistance and chipping resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35038192A JPH06172911A (en) | 1992-12-03 | 1992-12-03 | Cutting tool made of zirconium carbonitride-based cermet excellent in wear resistance and chipping resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06172911A true JPH06172911A (en) | 1994-06-21 |
Family
ID=18410104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35038192A Withdrawn JPH06172911A (en) | 1992-12-03 | 1992-12-03 | Cutting tool made of zirconium carbonitride-based cermet excellent in wear resistance and chipping resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06172911A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105154741A (en) * | 2015-08-31 | 2015-12-16 | 苏州莱特复合材料有限公司 | High-temperature-resistant metal ceramic composite material and preparation method thereof |
-
1992
- 1992-12-03 JP JP35038192A patent/JPH06172911A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105154741A (en) * | 2015-08-31 | 2015-12-16 | 苏州莱特复合材料有限公司 | High-temperature-resistant metal ceramic composite material and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20000307 |