JPH024972A - Surface-coated cermet for cutting tool - Google Patents
Surface-coated cermet for cutting toolInfo
- Publication number
- JPH024972A JPH024972A JP15595788A JP15595788A JPH024972A JP H024972 A JPH024972 A JP H024972A JP 15595788 A JP15595788 A JP 15595788A JP 15595788 A JP15595788 A JP 15595788A JP H024972 A JPH024972 A JP H024972A
- Authority
- JP
- Japan
- Prior art keywords
- cermet
- coating layer
- hard
- coated
- cutting
- 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
- 239000011195 cermet Substances 0.000 title claims abstract description 33
- 239000011247 coating layer Substances 0.000 claims abstract description 26
- 239000000758 substrate Substances 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 239000002344 surface layer Substances 0.000 claims abstract description 7
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 4
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 3
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 3
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 3
- 239000010410 layer Substances 0.000 claims description 18
- 239000006104 solid solution Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 4
- 239000002356 single layer Substances 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 2
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims description 2
- 150000004767 nitrides Chemical class 0.000 abstract description 5
- 239000007787 solid Substances 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 239000000843 powder Substances 0.000 description 11
- 238000005245 sintering Methods 0.000 description 11
- 238000001816 cooling Methods 0.000 description 6
- 239000012298 atmosphere Substances 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 239000012299 nitrogen atmosphere Substances 0.000 description 4
- 238000005240 physical vapour deposition Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 iron group metals Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910021404 metallic carbon Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Landscapes
- Chemical Vapour Deposition (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、被覆層のサーメット基体への付着性にすぐ
れ、特に高速切削や、高送りおよび高切込みなどの重切
削に切削工具として用いた場合にも被覆層の剥離が著し
く抑制され、すぐれた耐摩耗性を示す表面被覆サーメッ
トに関するものである。[Detailed Description of the Invention] [Field of Industrial Application] This invention has excellent adhesion of the coating layer to the cermet substrate, and is suitable for use as a cutting tool, especially in heavy cutting such as high-speed cutting, high feed, and high depth of cut. The present invention relates to a surface-coated cermet that exhibits excellent wear resistance and exhibits excellent abrasion resistance in which peeling of the coating layer is significantly suppressed even in cases where the coating layer peels off.
従来、一般に、鋼などの切削に切削工具として、結合相
形成成分としてのＣｏ、Ｎｉ、およびＦｅ （鉄族金
属）のうちの１種以上：５〜３０％、を含有し、残りが
硬質分散相形成成分としての組成式： （Ｔｉ、Ｍ）
ＣＮ（ただしＭはＴａ、Ｎｂ。Conventionally, cutting tools for cutting steel, etc., have generally contained 5 to 30% of one or more of Co, Ni, and Fe (iron group metals) as binder phase forming components, and the remainder is a hard dispersion. Compositional formula as a phase forming component: (Ti, M)
CN (M is Ta, Nb.
Ｗ、およびＭｏのうちの１種以上からなる）で現わされ
る金属炭窒化物固溶体および不可避不純物からなる組成
（以上重量％、以下％は重量％を示す）を有するサーメ
ット基体の表面に、化学蒸着法（ＣＶＤ法）や物理蒸着
法（ＰＶＤ法）を用いて、炭化チタン、窒化チタン、お
よび炭窒化チタン（以下、それぞれＴｉｃ、ＴｉＮ、お
よびＴ１ＣＮで示す）のうちの１種の単層または２種以
上の複層からなる被覆層を０．５〜２０ρの平均層厚で
形成してなる表面被覆サーメットが用いられている。On the surface of a cermet substrate having a composition consisting of a metal carbonitride solid solution (consisting of one or more of W and Mo) and unavoidable impurities (the above weight %, below % indicates weight %), A single layer of one of titanium carbide, titanium nitride, and titanium carbonitride (hereinafter referred to as Tic, TiN, and T1CN, respectively) is deposited using a chemical vapor deposition method (CVD method) or a physical vapor deposition method (PVD method). Alternatively, a surface-coated cermet is used, which is formed by forming a coating layer consisting of two or more types of multilayers with an average layer thickness of 0.5 to 20ρ.
しかし、近年の切削の高速化および省力化に伴い、高速
切削や重切削を余儀無くされつつあるが、上記の従来表
面被覆サーメットの場合、サーメット基体表面に対する
被覆層の付着強度が相対的に低いことが原因で、これを
高速切削や重切削に使用すると、被覆層が剥離し易く、
これが摩耗の進行を促進し、短かい使用寿命しか示さな
いのが現状である。However, as cutting speeds and labor savings have increased in recent years, high-speed cutting and heavy-duty cutting have become necessary, but in the case of the conventional surface-coated cermets mentioned above, the adhesion strength of the coating layer to the cermet base surface is relatively low. Due to this, when this is used for high-speed cutting or heavy cutting, the coating layer tends to peel off.
At present, this accelerates the progress of wear and shows only a short service life.
そこで、本発明者等は、上述のような観点から、上記の
従来表面被覆サーメットに着目し、これの被覆層のサー
メット基体表面に対する付着強度を向上せしめるべく研
究を行なった結果、サーメット基体の真空焼結時に、少
なくとも焼結温度からの冷却（この場合焼結温度へ昇温
した時点からでもよい）を窒素雰囲気で行なうと、焼結
後のサーメット基体の表面部には実質的に金属炭窒化物
固溶体だけからなる表面硬質層が形成されるようになり
、この状態で、ＣＶＤ法やＰＶＤ法により被覆層を形成
すると、この被覆層のサーメット基体に対する密着性は
著しく強固なものとなり、これを高速切削や重切削に切
削工具として用いた場合にも、被覆層の剥離は著しく抑
制されるようになることから、すぐれた耐摩耗性を長期
に亘って発揮するという知見を得たのである。Therefore, from the above-mentioned viewpoint, the present inventors focused on the above-mentioned conventional surface-coated cermet and conducted research to improve the adhesion strength of the coating layer to the cermet substrate surface. During sintering, if cooling is performed at least from the sintering temperature (in this case, it may be possible from the time the temperature rises to the sintering temperature) in a nitrogen atmosphere, the surface of the cermet substrate after sintering will substantially contain metal carbonitride. A hard surface layer consisting only of a solid solution of solid matter is formed, and when a coating layer is formed by CVD or PVD in this state, the adhesion of this coating layer to the cermet substrate becomes extremely strong. Even when used as a cutting tool for high-speed cutting or heavy-duty cutting, peeling of the coating layer is significantly suppressed, and we have obtained the knowledge that it exhibits excellent wear resistance over a long period of time.
この発明は、上記知見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のＣｏ、Ｎｌ、およびＦｅのうち
の１種以上：５〜３０％、
を含有し、残りが硬質分散相形成成分としての組成式：
（Ｔｉ、Ｍ）ＣＮ（ただしＭはＴａ、Ｎｂ。This invention was made based on the above knowledge, and contains 5 to 30% of one or more of Co, Nl, and Fe as binder phase forming components, and the remainder forms a hard dispersed phase. Compositional formula as a component:
(Ti, M)CN (where M is Ta, Nb.
Ｗ、およびＭＯのうちの１種以上からなる）で現わされ
る金属炭窒化物固溶体および不可避不純物からなる組成
を有し、かつ表面部に実質的に上記金属炭窒化物固溶体
だけからなる表面硬質層を１〜１０虜の平均層厚で形成
してなるサーメット基体の表面に、ＴｉＣ，ＴｉＮ、お
よびＴ１ＣＮのうちの１種の単層または２種以上の複層
からなる被覆層を０．５〜２０節の平均層厚で形成して
なる切削工具用表面被覆サーメット、
に特徴を有するものである。A surface having a composition consisting of a metal carbonitride solid solution represented by W, and one or more of MO) and unavoidable impurities, and whose surface portion consists essentially only of the metal carbonitride solid solution. A coating layer consisting of a single layer or a multilayer of two or more of TiC, TiN, and T1CN is applied to the surface of a cermet substrate formed by forming a hard layer with an average layer thickness of 1 to 10 mm. A surface-coated cermet for a cutting tool formed with an average layer thickness of 5 to 20 knots.
つぎに、この発明の表面被覆サーメットにおいて、上記
の通りに数値限定した理由を説明する。Next, in the surface-coated cermet of the present invention, the reason why the numerical values are limited as described above will be explained.
（ａ） 結合相形成成分の含有量
これらの成分には、硬質分散相を強固に結合し、サーメ
ットに強度および靭性を付与する作用があるが、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、サーメット基体の
耐摩耗性が低下するようになるばかりでなく、これの表
面部に金属炭窒化物固溶体だけからなる表面硬質層を形
成するのが困難となることから、その含有量を５〜３０
％と定めた。(a) Content of binder phase forming components These components have the effect of strongly binding the hard dispersed phase and imparting strength and toughness to the cermet, but if the content is less than 5%, the desired effect may not be achieved. The effect of
On the other hand, if the content exceeds 30%, not only will the wear resistance of the cermet substrate decrease, but it will also be difficult to form a hard surface layer consisting only of the metal carbonitride solid solution on the surface. Therefore, the content should be 5 to 30
%.
（ｂ） 表面硬質層の平均層厚
その平均層厚が１ρ未満では、被覆層の付着強度が不十
分で、苛酷な切削条件下では剥離が発生し易くなり、一
方その平均層厚が１０庫を越えると、チッピングや欠け
が発生し易くなることから、その平均層厚を１〜ｌＯ１
！ｎと定めた。(b) Average layer thickness of surface hard layer If the average layer thickness is less than 1ρ, the adhesion strength of the coating layer will be insufficient and peeling will easily occur under severe cutting conditions. If the average layer thickness exceeds 1 to 1O1, chipping and chipping are likely to occur.
! It was set as n.
（ｃ） 被覆層の平均層厚
その平均層厚が０．５庫未満では、被覆層形成に伴なう
所望の耐摩耗性向上効果が得られず、一方その平均層厚
が２０ｔ１ｍを越えると、同様に耐欠損性が低下し、チ
ッピングや欠けが発生し易くなることから、その平均層
厚を０．５〜２０μｓと定めた。(c) Average layer thickness of the coating layer If the average layer thickness is less than 0.5 mm, the desired effect of improving wear resistance due to the formation of the coating layer cannot be obtained, while if the average layer thickness exceeds 20 t1m. The average layer thickness was set at 0.5 to 20 .mu.s since chipping resistance was similarly reduced and chipping and chipping were likely to occur.
なお、この発明の表面被覆サーメットにおいて、サーメ
ット基体の表面部に形成される表面硬質層は、焼結温度
、窒素雰囲気への変換時点、および冷却速度を調整する
ことによって、その厚さを制御することができる。In the surface-coated cermet of the present invention, the thickness of the hard surface layer formed on the surface of the cermet base is controlled by adjusting the sintering temperature, the point of conversion to the nitrogen atmosphere, and the cooling rate. be able to.
つぎに、この発明の表面被覆サーメットを実施例により
具体的に説明する。Next, the surface-coated cermet of the present invention will be specifically explained with reference to Examples.
原料粉末として、いずれも１．０〜２．５μｍの範囲内
の平均粒径を有するＴ１ＣＮ粉末、ＴａＣ粉末、ＮｂＣ
粉末、ｗｃ粗粉末ＭＯ２Ｃ粉末、Ｃｏ粉末、Ｎｆ粉末、
およびＦｅ粉末を用意し、これらの原料粉末をそれぞれ
第１表に示される配合組成に配合し、ボールミルにて７
２時時間式混合し、乾燥した後、１．５ｔｏｎ／ｃ−の
圧力で圧粉体にプレス成形し、ついで、この圧粉体を、
常温から焼結温度への昇温雰囲気、並びに焼結温度保持
雰囲気： １Ｏ−２ｔｏｒｒの真空、焼結温度： １４
００〜１５００℃の範囲内の所定温度、焼結温度から常
温までの冷却雰囲気：１ｔｏｒｒの窒素雰囲気、
冷却速度：６〜ｂ
速度、
の条件で焼結して、Ｃｏ、Ｎｉ、およびＦｅのうちの１
種以上からなる結合相形成成分をそれぞれ第１表に示さ
れる配合量と実質的に同じ量含有し、残りが硬質分散相
形成成分としての組成式：（Ｔｉ、Ｍ） ・ＣＮを有す
る金属炭窒化物固溶体と不可避不純物からなる組成を有
し、かつ表面部にそれぞれ第１表に示される平均層厚の
表面硬質層が形成されたサーメット基体を製造し、引続
いてこれらのサーメット基体の表面に、通常の物理蒸着
装置を用い、通常の条件で同じく第１表に示される組成
および平均層厚の被覆層を形成することによって本発明
表面被覆サーメット１〜［３をそれぞれ製造した。As raw material powders, T1CN powder, TaC powder, and NbC powder all have an average particle size within the range of 1.0 to 2.5 μm.
Powder, wc coarse powder MO2C powder, Co powder, Nf powder,
and Fe powder were prepared, and these raw material powders were blended into the composition shown in Table 1, and milled in a ball mill for 7
After mixing for 2 hours and drying, it is press-molded into a green compact at a pressure of 1.5 ton/c-, and then this green compact is heated in an atmosphere where the temperature is raised from room temperature to the sintering temperature, and then sintered. Temperature holding atmosphere: 1O-2torr vacuum, sintering temperature: 14
Sintering is performed at a predetermined temperature within the range of 00 to 1500°C, cooling atmosphere from the sintering temperature to room temperature: 1 torr nitrogen atmosphere, cooling rate: 6 to b, and the following conditions are used: 1
Metallic carbon containing binder phase forming components consisting of at least one species in substantially the same amounts as shown in Table 1, with the remainder being a hard dispersed phase forming component having the following compositional formula: (Ti, M) ・CN A cermet substrate having a composition consisting of a nitride solid solution and unavoidable impurities and having a hard surface layer formed on each surface with an average layer thickness shown in Table 1 is manufactured, and then the surface of these cermet substrates is Surface-coated cermets 1 to 3 of the present invention were each manufactured by forming a coating layer having the composition and average layer thickness shown in Table 1 using an ordinary physical vapor deposition apparatus under ordinary conditions.
また、比較の目的で、焼結時における真空雰囲気から窒
素雰囲気への変換を行なわず、昇温開始から冷却終了ま
でを１（１−２ｔｏｒｒの真空雰囲気中で行なうと共に
、いずれの場合も焼結温度からの冷却速度を３℃／ｍｉ
ｎとする以外は、同一の条件にて従来表面被覆サーメッ
ト１〜１３をそれぞれ製造した。なお、従来表面被覆サ
ーメット１〜１３におけるサーメット基体の表面部には
表面硬質層の形成はなく、組織的に変化のないものであ
った。For the purpose of comparison, the vacuum atmosphere during sintering was not converted to a nitrogen atmosphere, and the period from the start of temperature rise to the end of cooling was performed in a vacuum atmosphere of 1 (1-2 torr), and in both cases, the sintering Cooling rate from temperature to 3℃/mi
Conventional surface-coated cermets 1 to 13 were manufactured under the same conditions except for n. In addition, there was no formation of a surface hard layer on the surface portion of the cermet base in conventional surface-coated cermets 1 to 13, and there was no structural change.
ついで、この結果得られた各種の表面被覆サーメットを
切削工具として用い、
被削材：ＳＣＭ４１５（硬さ： ＨＢ１５０）の丸棒、
切削速度： ３００ ｍ／ｍｉｎ 。Next, the various surface-coated cermets obtained as a result were used as a cutting tool to cut a round bar of work material: SCM415 (hardness: HB150),
Cutting speed: 300 m/min.
送 リ： ０．２ ｍｍ／ｒｅｖ ｓ切込み：１ｍ
ｍ。Feed: 0.2 mm/rev s Depth of cut: 1m
m.
切削時間： ２０ｍ１ｎ 。Cutting time: 20m1n.
の条件で鋼の連続高速切削試験に供し、試験後の切刃の
逃げ面摩耗幅を測定すると共に、被覆層の剥離の有無を
観察した。この結果を第１表に示した。The steel was subjected to a continuous high-speed cutting test under the following conditions, and the flank wear width of the cutting edge was measured after the test, and the presence or absence of peeling of the coating layer was observed. The results are shown in Table 1.
第１表に示される結果から明らかなように、本発明表面
被覆サーメット１〜Ｉ３は、いずれも被覆層のサーメッ
ト基体への密着性にすぐれているので、被覆層に剥離現
象は見られず、したがってすぐれた耐摩耗性を示すのに
対して、従来表面被覆サーメット１〜１３は、いずれも
被覆層のサーメット基体への密着性が不十分なので、被
覆層に剥離が発生し、耐摩耗性の劣ったものになってい
る。As is clear from the results shown in Table 1, surface-coated cermets 1 to I3 of the present invention all have excellent adhesion of the coating layer to the cermet substrate, so no peeling phenomenon is observed in the coating layer. Therefore, while they exhibit excellent abrasion resistance, conventional surface-coated cermets 1 to 13 all have insufficient adhesion of the coating layer to the cermet substrate, resulting in peeling of the coating layer and poor abrasion resistance. It has become inferior.
上述のように、この発明の表面被覆サーメットは、これ
を構成する被覆層のサーメット基体への付着強度が、サ
ーメット基体表面部に形成された結合相形成成分が存在
せず、実質的に金属炭窒化物固溶体だけからなる表面硬
質層によって著しく向上したものになっているので、こ
れを高速切削や重切削などの苛酷な切削条件下で切削工
具として使用しても被覆層に剥離が発生することはなく
、すぐれた耐摩耗性を示すのである。As mentioned above, the surface-coated cermet of the present invention has a coating layer constituting the cermet substrate that has a bonding strength substantially equal to that of metal carbon because there is no binder phase forming component formed on the surface of the cermet substrate. The surface hardness layer consisting only of nitride solid solution has been significantly improved, so even if this is used as a cutting tool under harsh cutting conditions such as high-speed cutting or heavy cutting, the coating layer will not peel off. It shows excellent abrasion resistance.
Claims (1)
のうちの１種以上：５〜３０％、を含有し、残りが硬質
分散相形成成分としての組成式：（Ｔｉ、Ｍ）ＣＮ（た
だしＭはＴａ、Ｎｂ、Ｗ、およびＭｏのうちの１種以上
からなる）で現わされる金属炭窒化物固溶体および不可
避不純物からなる組成を有し、かつ表面部に実質的に上
記金属炭窒化物固溶体だけからなる表面硬質層を１〜１
０μｍの平均層厚で形成してなるサーメット基体の表面
に、炭化チタン、窒化チタン、および炭窒化チタンのう
ちの１種の単層または２種以上の複層からなる被覆層を
０．５〜２０μｍの平均層厚で形成してなる切削工具用
表面被覆サーメット。(1) Co, Ni, and Fe as bonded phase forming components
One or more of the following: 5 to 30%, with the remainder as a hard dispersed phase forming component Compositional formula: (Ti, M)CN (where M is one of Ta, Nb, W, and Mo) It has a composition consisting of a metal carbonitride solid solution represented by (composed of at least 1 species) and unavoidable impurities, and has 1 to 1 hard surface layers consisting essentially only of the metal carbonitride solid solution on the surface.
A coating layer consisting of a single layer or a multilayer of two or more of titanium carbide, titanium nitride, and titanium carbonitride is coated on the surface of a cermet substrate formed with an average layer thickness of 0 μm. A surface-coated cermet for cutting tools formed with an average layer thickness of 20 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63155957A JP2812390B2 (en) | 1988-06-23 | 1988-06-23 | Manufacturing method of surface coated cermet cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63155957A JP2812390B2 (en) | 1988-06-23 | 1988-06-23 | Manufacturing method of surface coated cermet cutting tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH024972A true JPH024972A (en) | 1990-01-09 |
| JP2812390B2 JP2812390B2 (en) | 1998-10-22 |
Family
ID=15617231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63155957A Expired - Lifetime JP2812390B2 (en) | 1988-06-23 | 1988-06-23 | Manufacturing method of surface coated cermet cutting tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2812390B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0492059A2 (en) * | 1990-12-25 | 1992-07-01 | Mitsubishi Materials Corporation | Surface coated cermet blade member |
| US20170008093A1 (en) * | 2014-02-26 | 2017-01-12 | Mitsubishi Materials Corporation | Surface-coated titanium carbonitride-based cermet cutting tool having excellent chipping resistance |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62174380A (en) * | 1986-01-27 | 1987-07-31 | Mitsubishi Metal Corp | Surface coated sintered hard alloy member for cutting tool |
| JPS63103069A (en) * | 1986-10-17 | 1988-05-07 | Hitachi Tool Eng Ltd | Surface coated sintered hard alloy |
| JPS63103071A (en) * | 1986-10-17 | 1988-05-07 | Hitachi Tool Eng Ltd | Surface coated sintered hard alloy |
-
1988
- 1988-06-23 JP JP63155957A patent/JP2812390B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62174380A (en) * | 1986-01-27 | 1987-07-31 | Mitsubishi Metal Corp | Surface coated sintered hard alloy member for cutting tool |
| JPS63103069A (en) * | 1986-10-17 | 1988-05-07 | Hitachi Tool Eng Ltd | Surface coated sintered hard alloy |
| JPS63103071A (en) * | 1986-10-17 | 1988-05-07 | Hitachi Tool Eng Ltd | Surface coated sintered hard alloy |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0492059A2 (en) * | 1990-12-25 | 1992-07-01 | Mitsubishi Materials Corporation | Surface coated cermet blade member |
| US5296016A (en) * | 1990-12-25 | 1994-03-22 | Mitsubishi Materials Corporation | Surface coated cermet blade member |
| EP0492059B1 (en) * | 1990-12-25 | 2000-07-26 | Mitsubishi Materials Corporation | Surface coated cermet blade member |
| US20170008093A1 (en) * | 2014-02-26 | 2017-01-12 | Mitsubishi Materials Corporation | Surface-coated titanium carbonitride-based cermet cutting tool having excellent chipping resistance |
| US10076789B2 (en) * | 2014-02-26 | 2018-09-18 | Mitsubishi Materials Corporation | Surface-coated titanium carbonitride-based cermet cutting tool having excellent chipping resistance |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2812390B2 (en) | 1998-10-22 |
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