JPH0780083B2 - Surface coated hard alloy cutting tool with stable service life - Google Patents
Surface coated hard alloy cutting tool with stable service lifeInfo
- Publication number
- JPH0780083B2 JPH0780083B2 JP61231416A JP23141686A JPH0780083B2 JP H0780083 B2 JPH0780083 B2 JP H0780083B2 JP 61231416 A JP61231416 A JP 61231416A JP 23141686 A JP23141686 A JP 23141686A JP H0780083 B2 JPH0780083 B2 JP H0780083B2
- Authority
- JP
- Japan
- Prior art keywords
- cutting tool
- service life
- cutting
- hard alloy
- stable service
- 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 - Fee Related
Links
- 239000000956 alloy Substances 0.000 title claims description 4
- 229910045601 alloy Inorganic materials 0.000 title claims description 4
- 239000010410 layer Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 15
- 239000011195 cermet Substances 0.000 claims description 4
- 239000002356 single layer Substances 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 238000002441 X-ray diffraction Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 150000004767 nitrides Chemical class 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 2
- 150000001247 metal acetylides Chemical class 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- RSAQARAFWMUYLL-UHFFFAOYSA-N tic-10 Chemical compound CC1=CC=CC=C1CN1C(CCN(CC=2C=CC=CC=2)C2)=C2C(=O)N2CCN=C21 RSAQARAFWMUYLL-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Chemical Vapour Deposition (AREA)
Description
【発明の詳細な説明】 〔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示すばかり
でなく、使用寿命がきわめて安定した表面被覆硬質合金
製切削工具に関するものである。TECHNICAL FIELD The present invention relates to a surface-coated hard alloy cutting tool which not only exhibits excellent wear resistance and chipping resistance but also has an extremely stable service life. .
〔従来の技術〕 炭化タングステン（以下WCで示す）基超硬合金母材や炭
窒化チタン（以下TiCNで示す）基サーメット母材の表面
に、Tiの炭化物、窒化物、および炭窒化物（以下それぞ
れTiC,TiN,およびTiCNで示す）のうちの１種の単層また
は２種以上の複層からなる内層と、酸化アルミニウム
（以下Al2O3で示す）からなる外層とで構成された表面
硬質層を被覆してなる表面被覆硬質合金製切削工具（以
下表面被覆切削工具という）が知られている。[Prior Art] On the surface of a tungsten carbide (hereinafter referred to as WC) -based cemented carbide base material or a titanium carbonitride (hereinafter referred to as TiCN) -based cermet base material, Ti carbide, nitride, and carbonitride (hereinafter (Indicated by TiC, TiN, and TiCN, respectively), a surface composed of an inner layer composed of one single layer or two or more composite layers and an outer layer composed of aluminum oxide (hereinafter referred to as Al 2 O 3 ). A surface-coated hard alloy cutting tool (hereinafter referred to as a surface-coated cutting tool) formed by coating a hard layer is known.
しかし、上記の従来表面被覆切削工具においては、使用
寿命に大きなバラツキがあり、このため切削定数で工具
交換する場合には、バラツキの下限値を考慮して、全体
的に短かい使用時間での工具交換を設定しているのが現
状であり、経済的でない。However, in the above-mentioned conventional surface-coated cutting tools, there is a large variation in service life, and therefore, when exchanging tools with cutting constants, considering the lower limit of variation, the overall operating time is short. It is not economical because the current situation is to set tool changes.
〔問題点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
表面被覆切削工具の使用寿命のバラツキを抑制し、もつ
て使用寿命の全体的延命化をはかるべく研究を行なつた
結果、上記の従来表面被覆切削工具における表面硬質層
は、Ｘ線回折分析によると、その内層はほとんどの場
合、最高ピークが（220）面を示し、かつ外層がα型お
よびＫ型の混合組織を示すことが判明し、しかして、化
学蒸着装置における雰囲気圧力、温度、並びに反応し
て、ガスの組成および流量割合などの条件を調整して、
表面硬質層における内層を、Ｘ線回決で最高ピークが
（200）面を示すTiC,TiN,およびTiCNで構成し、かつ外
層をα型Al2O3で構成すると、相対的に耐摩耗性および
耐欠損性が向上するようになるばかりでなく、同種工具
用の使用寿命のバラツキが著しく抑制されるようになつ
て、定数切削での工具交換の交換時間の延命化がはかれ
るようになるという知見を得たのである。[Means for Solving Problems] Therefore, the inventors of the present invention, from the viewpoints described above, suppress the variation in the service life of the surface-coated cutting tool, and thus extend the service life as a whole. As a result of conducting appropriate research, according to X-ray diffraction analysis, the surface hard layer in the above-described conventional surface-coated cutting tool almost always has the highest peak of the (220) plane and the outer layer of α It was found to exhibit a mixed structure of type I and type K. Therefore, by adjusting the conditions such as atmospheric pressure, temperature, and reaction in the chemical vapor deposition apparatus, gas composition and flow rate ratio,
If the inner layer of the hard surface layer is composed of TiC, TiN, and TiCN, whose maximum peak shows the (200) plane by X-ray rounding, and the outer layer is composed of α-type Al 2 O 3 , it has relatively high wear resistance. And not only the fracture resistance is improved, but also the variation in the service life of the same type of tool is significantly suppressed, and the life of the replacement time of tool replacement in constant cutting can be extended. I got the knowledge.
この発明は、上記知見にもとづいてなされたものであつ
て、WC基超硬合金母材またはTiCN基サーメツト母材の表
面に、TiC,TiN,およびTiCNのうちの１種の単層または２
種以上の複層からなり、かつＸ線回折で最高ピークが
（200）面を示す内層と、α型Al2O3からなる外層とで構
成された表面硬質層を被覆してなる、すぐれた耐摩耗性
と耐欠損性を有し、かつ安定した使用寿命を示す表面被
覆切削工具に特徴を有するものである。The present invention has been made based on the above findings, in which a single layer of TiC, TiN, and TiCN or a single layer of TiCN or TiCN is formed on the surface of a WC-based cemented carbide base material or a TiCN-based cermet base material.
It is an excellent coating consisting of a hard surface layer consisting of an inner layer consisting of multiple layers of at least two species and the highest peak of which is (200) plane in X-ray diffraction, and an outer layer consisting of α-type Al 2 O 3 . It is characterized by a surface-coated cutting tool that has wear resistance and chipping resistance and exhibits a stable service life.
〔実施例〕 つぎに、この発明の表面被覆切削工具を実施例により具
体的に説明する。[Examples] Next, the surface-coated cutting tool of the present invention will be specifically described with reference to Examples.
実施例 １ WC基超硬合金母材として、通常の粉末冶金法で製造され
た、重量％で、72％WC−８％TiC−10％TaC−10％Coの組
成（ISO分類p30に相当）、並びにSNMN432の形状をもつ
た切削工具素材、またTiCN基サーメツト母材として、同
じく通常の粉末冶金法で製造された、重量％で、50％Ti
CN−15％WC−８％TaC−10％Mo2C−５％Ni−12％Coの組
成、並びにSNGN432の形状をもつた切削工具素材をそれ
ぞれ用意し、この切削工具素材の表面に、通常の化学蒸
着装置を用い、第１表に示される条件で同じく第１表に
示される組成および平均層厚の表面硬質層を形成するこ
とによつて、本発明表面被覆切削工具１〜４および従来
表面被覆切削工具１〜４をそれぞれ製造した。Example 1 A composition of 72% WC-8% TiC-10% TaC-10% Co, which is produced by a normal powder metallurgy method as a WC-based cemented carbide base material and is 72% by weight (equivalent to ISO classification p30). , And a cutting tool material with the shape of SNMN432, and a TiCN-based cermet base material, also manufactured by the same ordinary powder metallurgy method.
The composition of the CN-15% WC-8% TaC-10% Mo 2 C-5% Ni-12% Co, and a cutting tool material that has a shape of SNGN432 respectively provided on the surface of the cutting tool material, usually The surface-coated cutting tools 1 to 4 of the present invention and conventional ones were formed by forming a hard surface layer having the composition and average layer thickness shown in Table 1 under the conditions shown in Table 1 using the chemical vapor deposition apparatus of Surface-coated cutting tools 1 to 4 were manufactured, respectively.
ついで、本発明表面被覆切削工具１〜３および従来表面
被覆切削工具１〜３については、試験本数を10本とし、 被削材:SNCM439（硬さ:HB230）の丸棒、 切削速度:160m/min、 送り:0.3mm/rev.、 切込み:2mm、 切削時間:30mm、 の条件で切削試験を行ない、切刃の逃げ面摩耗幅を測定
して耐摩耗性のバラツキを評価し、さらに 被削材:SNCM439（硬さ:HB270）の溝つき丸棒、 切削速度:140m/min、 送り:0.25mm/rev.、 切込み:1.5mm、 の条件で切削試験を行ない、切刃に欠損が発生するまで
の切削時間を測定し、耐欠損性のバラツキを評価した。Next, regarding the surface-coated cutting tools 1 to 3 of the present invention and the conventional surface-coated cutting tools 1 to 3, the number of test pieces is 10, and the work material is a round bar of SNCM439 (hardness: H B 230), cutting speed: A cutting test was performed under the conditions of 160 m / min, feed: 0.3 mm / rev., Depth of cut: 2 mm, cutting time: 30 mm, and the flank wear width of the cutting edge was measured to evaluate variations in wear resistance. Work material: SNCM439 (hardness: H B 270) round bar with groove, A cutting test is performed under the conditions of cutting speed: 140 m / min, feed: 0.25 mm / rev., Depth of cut: 1.5 mm, and the cutting time until the cutting edge is broken is measured to evaluate the variation in breakage resistance. did.
また、本発明表面被覆切削工具４および従来表面被覆切
削工具４については、同じく試験本数を10本とし、 被削材:SCM415（硬さ:HB140）の丸棒、 切削速度:200m/min、 送り:0.2mm/rev.、 切込み:1mm、 切削時間:45mm、 の条件で切削試験を行ない、切刃の逃げ面摩耗幅を測定
して耐摩耗性のバラツキを評価し、さらに 被削材:SCM415（硬さ:HB415）の角材、 切削速度:180m/mm、 送り:0.2.mm/rev.、 切込み:1.5mm、 の条件で切削試験を行ない、切刃に欠損が発生するまで
の切削時間を測定し、耐欠損性のバラツキを評価した。
これらの結果を第１図および第２図に示した。Further, regarding the surface-coated cutting tool 4 of the present invention and the conventional surface-coated cutting tool 4, the number of test pieces is 10, and the work material is a SCM415 (hardness: H B 140) round bar, and the cutting speed is 200 m / min. , Feed: 0.2 mm / rev., Depth of cut: 1 mm, Cutting time: 45 mm, the cutting test is performed, the flank wear width of the cutting edge is measured to evaluate the variation in wear resistance, and the work material : SCM415 (hardness: H B 415) square bar, cutting speed: 180m / mm, feed: 0.2.mm/rev., Depth of cut: 1.5mm, the cutting test is performed until the cutting edge becomes defective. The cutting time was measured to evaluate the variation in fracture resistance.
The results are shown in FIGS. 1 and 2.
第１図および第２図に示される結果から、本発明表面被
覆切削工具１〜４は、いずれも従来表面被覆切削工具１
〜４に比して、すぐれた耐摩耗性および耐欠損性を示
し、かつそのバラツキも著しく小さいことが明らかであ
る。From the results shown in FIGS. 1 and 2, the surface-coated cutting tools 1 to 4 of the present invention are all conventional surface-coated cutting tools 1
It is clear that, as compared with those of Nos. 4 to 4, excellent wear resistance and chipping resistance are exhibited, and their variations are remarkably small.
上述のように、この発明の表面被覆切削工具は、すぐれ
た耐摩耗性および耐欠損性を有し、かつそのバラツキも
小さいので、定数切削での切削工具の交換時間の延命化
がはかれるなど工業上有用な特性を有するのである。As described above, the surface-coated cutting tool of the present invention has excellent wear resistance and chipping resistance, and its variation is small, so that the life of the replacement time of the cutting tool in constant cutting can be extended. It has the above-mentioned useful properties.
第１図は表面被覆切削工具:10本ごとの逃げ面摩耗幅を
示す図、第２図は同じく表面被覆切削工具:10本ごとの
切刃に欠損が発生するまでの切削時間を示す図である。Fig. 1 is a diagram showing the flank wear width for every 10 surface-coated cutting tools, and Fig. 2 is a diagram showing the cutting time until a cutting edge is broken for every 10 surface-coated cutting tools. is there.
Claims (1)
窒化チタン基サーメット母材の表面に、Tiの炭化物、窒
化物、および炭窒化物のうちの１種の単層または２種以
上の複層からなり、かつＸ線回折で最高ピークが（20
0）面を示す内層と、α型酸化アルミニウムからなる外
層とで構成された表面硬質層を被覆してなるすぐれた耐
摩耗性および耐欠損性と、安定した使用寿命を示す表面
被覆硬質合金製切削工具。1. A single layer of one or more of carbides, nitrides and carbonitrides of Ti on the surface of a tungsten carbide based cemented carbide base material or a titanium carbonitride based cermet base material. It is composed of layers and the highest peak in X-ray diffraction is (20
Made of a surface-coated hard alloy showing excellent wear resistance and fracture resistance, and a stable service life, which is obtained by coating a surface hard layer composed of an inner layer showing a (0) surface and an outer layer made of α-type aluminum oxide. Cutting tools.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61231416A JPH0780083B2 (en) | 1986-09-30 | 1986-09-30 | Surface coated hard alloy cutting tool with stable service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61231416A JPH0780083B2 (en) | 1986-09-30 | 1986-09-30 | Surface coated hard alloy cutting tool with stable service life |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6389202A JPS6389202A (en) | 1988-04-20 |
| JPH0780083B2 true JPH0780083B2 (en) | 1995-08-30 |
Family
ID=16923246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61231416A Expired - Fee Related JPH0780083B2 (en) | 1986-09-30 | 1986-09-30 | Surface coated hard alloy cutting tool with stable service life |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0780083B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0364469A (en) * | 1989-08-01 | 1991-03-19 | Hitachi Tool Eng Ltd | Coated sintered hard alloy tool |
| JP3844285B2 (en) * | 2001-10-30 | 2006-11-08 | 三菱マテリアル神戸ツールズ株式会社 | Surface-coated cemented carbide cutting tool with excellent wear resistance due to high-speed cutting and hard coating layer |
| CN1280047C (en) * | 2001-10-30 | 2006-10-18 | 三菱综合材料神户工具株式会社 | Surface coated cemeted carbide cutting tool having hard coating layer exhibiting excellent wear resisitance in high speed machining |
| CN101959631B (en) * | 2008-02-27 | 2012-09-26 | 京瓷株式会社 | Surface coated member and cutting tool |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5918475B2 (en) * | 1976-09-13 | 1984-04-27 | 住友電気工業株式会社 | coated high speed steel |
| JPS5547110A (en) * | 1978-09-30 | 1980-04-03 | Eisai Co Ltd | Filtering apparatus |
| JPS5844149A (en) * | 1981-09-11 | 1983-03-15 | 日本ボ−マナイト株式会社 | Mold pressing execution of wall surface |
-
1986
- 1986-09-30 JP JP61231416A patent/JPH0780083B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6389202A (en) | 1988-04-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |