JPH0276606A - Cutting tool made of high abrasion-resistant titanium carbide-nitride radical cermet - Google Patents
Cutting tool made of high abrasion-resistant titanium carbide-nitride radical cermetInfo
- Publication number
- JPH0276606A JPH0276606A JP22607588A JP22607588A JPH0276606A JP H0276606 A JPH0276606 A JP H0276606A JP 22607588 A JP22607588 A JP 22607588A JP 22607588 A JP22607588 A JP 22607588A JP H0276606 A JPH0276606 A JP H0276606A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- hard
- cutting
- cermet
- cutting tool
- 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 27
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims description 6
- 239000010936 titanium Substances 0.000 title claims description 6
- 229910052719 titanium Inorganic materials 0.000 title claims description 6
- 238000005299 abrasion Methods 0.000 title abstract 2
- 239000011230 binding agent Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 150000004767 nitrides Chemical class 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 150000002739 metals Chemical class 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- 150000001247 metal acetylides Chemical class 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 claims description 2
- 239000006104 solid solution Substances 0.000 claims description 2
- 239000012071 phase Substances 0.000 abstract description 34
- 238000005245 sintering Methods 0.000 abstract description 17
- 239000010410 layer Substances 0.000 abstract description 15
- 239000002344 surface layer Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 10
- 239000012298 atmosphere Substances 0.000 abstract description 9
- 239000012299 nitrogen atmosphere Substances 0.000 abstract description 6
- 239000007789 gas Substances 0.000 abstract description 2
- 239000007791 liquid phase Substances 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000005261 decarburization Methods 0.000 abstract 1
- 230000008520 organization Effects 0.000 abstract 1
- 230000000630 rising effect Effects 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Landscapes
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、すぐれた耐摩耗性を有し、特に高速切削や
、高送りおよび高切込み切削などの重切削に用いた場合
にすぐれた切削性′能を長期に亘って発揮する炭窒化チ
タン（以下Ｔ１ＣＮで示す）基サーメット製切削工具に
関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention has excellent wear resistance, and provides excellent cutting performance especially when used in heavy cutting such as high-speed cutting, high-feed, and high-depth cutting. This invention relates to a titanium carbonitride (hereinafter referred to as T1CN)-based cermet cutting tool that exhibits long-term performance.
従来、一般に、鋼などの切削に、
結合相形成成分としてＣｏおよびＮｉのうちの１種また
は２種＝５〜３０％、
硬質相形成成分として周期律表の４ａ、５ａ。Conventionally, in general, for cutting steel, etc., one or both of Co and Ni = 5 to 30% as binder phase forming components, and 4a and 5a of the periodic table as hard phase forming components.
および６ａ族金属の炭化物、窒化物、および炭窒化物、
並びにこれらの２種以上の固溶体（ただし、Ｔ１ＣＮ、
並びに６ａ族金属の窒化物および炭窒化物を除くととも
に、これら全体を（Ｍ）Ｃ−Ｎで示す）のうちの１種ま
たは２種以上：０．１〜３５９６、
を含有し、残りが同じく硬質相形成成分としてのＴ１Ｃ
Ｎと不可避不純物からなる組成（以上ｆ１％、以下％は
ｍｔｃ％を示す）を有し、かつ、硬質相が、２重相構造
（有芯構造）組織、または２王相構造と単相構造の混合
組織を有するＴ１ＣＮ基サーメットで製造された切削工
具、が用いられている。and carbides, nitrides, and carbonitrides of group 6a metals,
and solid solutions of two or more of these (however, T1CN,
and excluding nitrides and carbonitrides of group 6a metals, and containing one or more of the following (all represented by (M)C-N): 0.1 to 3596, and the rest being the same T1C as a hard phase forming component
It has a composition consisting of N and unavoidable impurities (the above f1%, the below % indicates mtc%), and the hard phase has a double phase structure (cored structure) structure, or a dual phase structure and a single phase structure. A cutting tool manufactured from a T1CN-based cermet having a mixed structure of is used.
一方、近年の切削加工能率の高能率化に伴い、高速切削
や高送り切削が適用される傾向にあるが、上記の従来Ｔ
１ＣＮ基サーメット製切削工具においては、すぐれた靭
性をもつものの、耐摩耗性が不十分であるために、高速
切削や高送り切削に用いた場合には、比較的短時間で使
用寿命に至るのが現状である。On the other hand, with the recent improvement in cutting processing efficiency, there is a tendency for high-speed cutting and high-feed cutting to be applied.
Although cutting tools made of 1CN-based cermet have excellent toughness, their wear resistance is insufficient, so when used for high-speed cutting or high-feed cutting, they reach the end of their useful life in a relatively short period of time. is the current situation.
そこで、本発明者等は、上述のような観点から、上記の
従来Ｔ１ＣＮ基サーメット製切削工具に着目し、これの
もつすぐれた靭性を損なうことなく、耐摩耗性を向上せ
しめるべく研究を行なった結果、従来Ｔ１ＣＮ基サーメ
ット製切削工具の製造において、その焼結に際しては、
主成分であるＴ１ＣＮや他の合金成分である窒化物およ
び炭窒化物が分解して脱窒しないようにするために、少
なくとも脱窒開始温度から焼結温度までの昇温過程、焼
結温度保持過程、および冷却過程を窒素雰囲気としてい
たが、これを、常温から脱窒開始温度越え〜液相出現温
度未満の範囲内の所定温度までの昇温過程を、真空など
の脱窒雰囲気またはＣＯ２ガス含有の脱炭雰囲気とし、
続いての残りの焼結温度までの昇温過程、焼結温度保持
過程、および冷却過程を同じく窒素雰囲気とすると、焼
結後のＴ１ＣＮ基サーメットの表面部には、単相構造の
硬質相と結合相からなる表面層が形成されるようになり
、この表面層は、２重相構造、または２重相構造と単相
構造の混合組織を有する硬質 ・相と結合相からなる靭
性のすぐれたサーメット内部に比して著しく硬質で、し
たがってこれを高速切削や高送り切削に用いた場合にす
ぐれた切削性能を長期に亘って発揮するようになるとい
う知見を得たのである。Therefore, from the above-mentioned viewpoint, the present inventors focused on the conventional T1CN-based cermet cutting tool described above, and conducted research to improve its wear resistance without impairing its excellent toughness. As a result, in the production of conventional T1CN-based cermet cutting tools, during sintering,
In order to prevent the main component T1CN and other alloy components nitrides and carbonitrides from decomposing and denitrifying, at least the temperature raising process from the denitrification start temperature to the sintering temperature, and the sintering temperature maintenance The heating process from room temperature to a predetermined temperature within the range of above the denitrification start temperature to below the liquid phase appearance temperature was carried out in a denitrification atmosphere such as vacuum or CO2 gas. A decarburizing atmosphere containing
If the subsequent heating process up to the remaining sintering temperature, sintering temperature holding process, and cooling process are performed in a nitrogen atmosphere, the surface of the T1CN-based cermet after sintering will have a hard phase with a single-phase structure. A surface layer consisting of a binder phase is formed, and this surface layer has a double-phase structure or a mixed structure of a double-phase structure and a single-phase structure. They found that it is significantly harder than the inside of the cermet, and therefore exhibits excellent cutting performance over a long period of time when used for high-speed cutting or high-feed cutting.
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ＣｏおよびＮｉのうちの１種また
は２種：５〜３０％、
硬質相形成成分としての（Ｍ）Ｃ−Ｎのうちの１種また
は２種以上：０．１〜３５％、を含有し、残りが同じく
硬質相形成成分としてのＴｆＣＮと不可避不純物からな
る組成を有し、かつ硬質相が、２重相構造（有芯構造）
組織、または２重相構造と単相構造の混合組織を有する
Ｔ１ＣＮ基サーメット製切削工具の表面部に、単相構造
の硬質相と結合相からなる表面硬質層を１〜ＩＯ−の平
均層厚で形成してなる耐摩耗性のすぐれたＴ１ＣＮ基サ
ーメット製切削工具に特徴を有するものである。This invention was made based on the above findings, and includes: 5 to 30% of one or both of Co and Ni as binder phase forming components; (M)C-N as a hard phase forming component; One or more of the following: 0.1 to 35%, and the remainder has a composition consisting of TfCN as a hard phase forming component and unavoidable impurities, and the hard phase has a double phase structure. (core structure)
On the surface of a T1CN-based cermet cutting tool having a structure or a mixed structure of a double-phase structure and a single-phase structure, a surface hard layer consisting of a hard phase of a single-phase structure and a binder phase is formed with an average layer thickness of 1 to IO−. The cutting tool is characterized by a T1CN-based cermet cutting tool with excellent wear resistance.
つぎに、この発明の切削工具において、Ｔ１ＣＮ基サー
メットの成分組成および表面硬質層の平均層厚を上記の
通りに限定した理由を説明する。Next, in the cutting tool of the present invention, the reason why the component composition of the T1CN-based cermet and the average layer thickness of the surface hard layer are limited as described above will be explained.
（ａ） ＣｏおよびＮｉの含有量
これらの成分には、分散する硬質相と強固に結合し、か
つ靭性を向上させる作用があるが、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。(a) Content of Co and Ni These components have the effect of strongly bonding with the dispersed hard phase and improving toughness, but if the content is less than 5%, the desired effect is not achieved. On the other hand, if the content exceeds 30%, the wear resistance will decrease, so the content was set at 5 to 30%.
（ｂ） （Ｍ）Ｃ−Ｎの含有量
これらの成分には、焼結性を向上させ、かつ強度を向上
させる作用があるが、その含有量が０．１％未満では前
記作用に所望の効果が得られず、−方その含有量が３５
％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０．１〜３５％と定めた。(b) Content of (M)C-N These components have the effect of improving sinterability and strength, but if the content is less than 0.1%, the desired effect may not be achieved. If the effect is not obtained, the content is 35
If it exceeds %, the wear resistance will decrease.
Its content was determined to be 0.1 to 35%.
（ｅ） 表面硬質層の平均層厚
表面硬質層は、内部がロックウェル硬さＡスケール（Ｈ
ＲＡ）：９０〜９２をもつのに対して、これより高いＨ
ＲＡ ： ９２〜９３．５を有し、硬質で、耐摩耗性の
すぐれたものであるが、その平均層厚が１μｓ未満では
所望の耐摩耗性を確保することができず、一方その平均
層厚が１０虜を越えると、靭性が低下するようになるこ
とから、その平均層厚を１〜ｌＯ虜と定めた。(e) Average layer thickness of the hard surface layer The inside of the hard surface layer has a Rockwell hardness of A scale (H
RA): 90-92, while H higher than this
RA: 92 to 93.5, is hard and has excellent wear resistance, but if the average layer thickness is less than 1 μs, the desired wear resistance cannot be secured; If the thickness exceeds 10 mm, the toughness decreases, so the average layer thickness was set at 1 to 10 mm.
また、表面硬質層は、上記の通り焼結雰囲気を調整する
ことによって形成することができるが、その層厚は、配
合組成の全Ｎ／ＣＮ比、焼結雰囲気の昇温過程における
窒素雰囲気への切換え温度、並びに前記窒素雰囲気にお
けるＮ２分圧などを制御することによって調整すること
ができる。In addition, the surface hard layer can be formed by adjusting the sintering atmosphere as described above, but the layer thickness depends on the total N/CN ratio of the compound composition and the nitrogen atmosphere during the temperature rise process of the sintering atmosphere. It can be adjusted by controlling the switching temperature, N2 partial pressure in the nitrogen atmosphere, etc.
つぎに、どの発明のＴ１ＣＮ基サーメット製切削工具を
実施例により具体的に説明する。Next, the T1CN-based cermet cutting tool of the invention will be specifically explained with reference to Examples.
原料粉末として、いずれも１〜１．５ｕｎの範囲内の所
定の平均粒径を６するＴ１ＣＮ粉末、各種の（Ｍ）Ｃ−
Ｎ粉末、Ｃｏ粉末、およびＮｌ粉末を用意し、これら原
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７２時間湿式混合し、乾燥した後、ＳＮ
ＭＧ４３２の規格形状にプレス成形し、ついで、
常温から１１００℃までの昇温過程： １ｏ−２ｔｏｒ
ｒの真空雰囲気、
１１００℃から１３５０℃までの昇温過程： １０Ｌｏ
ｒｒのＣＯ２雰囲気、
１３５０℃から１４２０〜１５００℃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、および前記焼結温度から常温までの冷却過程：
１０ｔｏｒｒのＮ２雰囲気、
とした条件で焼結することにより配合組成と実質的に同
じ組成をもち、かつ表面硬質層ををする本発明Ｔ１ＣＮ
基サーメット製切削チップ（以下本発明サーメットチッ
プという）１〜１５をそれぞれ製造した。As raw material powders, T1CN powder and various (M)C-
N powder, Co powder, and Nl powder are prepared, and these raw material powders are each blended into the composition shown in Table 1,
After wet mixing in a ball mill for 72 hours and drying, SN
Press molded into the standard shape of MG432, then heated from room temperature to 1100℃: 1o-2tor
r vacuum atmosphere, heating process from 1100℃ to 1350℃: 10Lo
rr CO2 atmosphere, heating process from 1350°C to a predetermined sintering temperature within the range of 1420 to 1500°C, holding process at the sintering temperature for 1 hour, and cooling process from the sintering temperature to room temperature:
The T1CN of the present invention has substantially the same composition as the blended composition and forms a hard surface layer by sintering in a 10 torr N2 atmosphere.
Cutting tips 1 to 15 made of base cermet (hereinafter referred to as cermet tips of the present invention) were manufactured, respectively.
また、比較の目的で、焼結条件を、
常温からｔｉｏｏ℃までの昇温過程： ｉｏ’ｔｏｒｒ
の真空雰囲気、
１１００℃から１４２０〜１５００℃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、および前記焼結温度から常温までの冷却過程：５
ｔｏｒｒのＮ２雰囲気１
とする以外は同一の条件で、表面硬質層の形成がない従
来Ｔ１ＣＮ基サーメット製切削チップ（以下従来サーメ
ットチップという）１〜１５をそれぞれ製造した。In addition, for the purpose of comparison, the sintering conditions were changed to the heating process from room temperature to tioo℃: io'torr
vacuum atmosphere, heating process from 1100°C to a predetermined sintering temperature within the range of 1420 to 1500°C, holding process at the sintering temperature for 1 hour, and cooling process from the sintering temperature to room temperature: 5
Conventional T1CN-based cermet cutting tips 1 to 15 (hereinafter referred to as conventional cermet tips) without a hard surface layer were manufactured under the same conditions except for a N2 atmosphere of 1 torr.
この結果得られた各種のサーメットチップについて、表
面硬質層の平均層厚、表面硬さ、および内部硬さ（いず
れもビッカース硬さ）を４−１定すると共に、耐摩耗性
を評価する目的で、
被削材： Ｊ Ｉｓ−５Ｃｌ５−５
Ｃ硬さ： ＨＢ１７０）の丸棒、
切削速度： ３００ｍ／ ｓｉｎ ｓ
切込み：２ｍ＋ｓｑ
送 リ： Ｑ 、 ３ｍｍ／ ｒｅｖ、、切削時間
： ２０１ｎ 。For the various cermet chips obtained as a result, the average layer thickness of the surface hard layer, surface hardness, and internal hardness (all Vickers hardness) were determined to be 4-1, and the wear resistance was evaluated. , Work material: JIS-5Cl5-5 C hardness: HB170) round bar, Cutting speed: 300m/sin s, Depth of cut: 2m+sq, Feed rate: Q, 3mm/rev, Cutting time: 201n.
の条件での鋼の乾式連続高速切削試験を行ない、切刃の
逃げ面摩耗幅を測定し、また靭性を評価する目的で、
被削材： Ｊ Ｉｓ−３Ｎｌ５−３Ｎ
Ｃ硬さ： ＨＢ２８＋））の角材、
切削速度： １５０ｍ／ａ＋ｉｎ 。A dry continuous high-speed cutting test was conducted on steel under the following conditions to measure the flank wear width of the cutting edge and to evaluate the toughness. Square timber, Cutting speed: 150m/a+in.
切込み＝２關、
送 リ： ０ 、３ｍｍ／ ｒｅｖ、、切削時間：
５ｏ＋Ｉｎｓ
の条件での鋼の乾式断続切削試験を行ない、１０本の試
験切刃数のうちの欠損発生切刃数を測定した。Depth of cut = 2 mm, feed rate: 0, 3 mm/rev, cutting time:
A dry interrupted cutting test was conducted on steel under the condition of 5°+Ins, and the number of cutting edges that suffered from breakage among the 10 tested cutting edges was measured.
これらの結果を第１表に示した。These results are shown in Table 1.
第１表に示される結果から、いずれのサーメットチップ
もすぐれた靭性を示すが、本発明サーメットチップ１〜
１５の方が、表面硬質層の形成によって、これの形成が
ない従来サーメットチップ１〜１５に比して、高い表面
硬さを有し、この結果としてすぐれた耐摩耗性を示すこ
とが明らかである。From the results shown in Table 1, all the cermet chips show excellent toughness, but the cermet chips 1 to 1 of the present invention show excellent toughness.
It is clear that cermet tips No. 15 have higher surface hardness due to the formation of a hard surface layer than conventional cermet tips No. 1 to 15, which do not have this formation, and as a result show excellent wear resistance. be.
上述のように、この発明のＴ１ＣＮ基サーメット製切削
工具は、表面硬質層の形成によってすぐれた耐摩耗性が
確保でき、一方その内部組織によってすぐれた靭性が確
保されるから、断続切削にすぐれた切削性能を発揮する
ばかりでなく、高速切削や高送り切削に用いてもすぐれ
た耐摩耗性を示し、著しく長い使用寿命を示すなど工業
上有用な特性を有するのである。As mentioned above, the T1CN-based cermet cutting tool of the present invention can ensure excellent wear resistance due to the formation of a hard surface layer, and excellent toughness due to its internal structure, making it excellent for interrupted cutting. It not only exhibits excellent cutting performance, but also exhibits excellent wear resistance even when used in high-speed cutting and high-feed cutting, and has industrially useful properties such as an extremely long service life.
■願人二 三菱金属株式会社■Applicant 2 Mitsubishi Metals Co., Ltd.
Claims (1)
種または２種：５〜３０％、 硬質相形成成分として周期律表の４ａ，５ａ，および６
ａ族金属の炭化物、窒化物、および炭窒化物、並びにこ
れらの２種以上の固溶体（ただし炭窒化チタン、並びに
６ａ族金属の窒化物および炭窒化物は除く）のうちの１
種または２種以上：０．１〜３５％、 を含有し、残りが同じく硬質相形成成分としての炭窒化
チタンと不可避不純物からなる組成（以上重量％）を有
し、 かつ硬質相が、２重相構造（有芯構造）組織、炭窒化チ
タン基サーメット製切削工具において、上記切削工具の
表面部に、単相構造の硬質相と結合相からなる表面硬質
層を１〜１０μｍの平均層厚で形成してなる耐摩耗性の
すぐれた炭窒化チタン基サーメット製切削工具。(1) One of Co and Ni as a bonding phase forming component
Species or 2 types: 5-30%, 4a, 5a, and 6 of the periodic table as hard phase forming components
One of carbides, nitrides, and carbonitrides of group a metals, and solid solutions of two or more of these (excluding titanium carbonitride and nitrides and carbonitrides of group 6a metals)
species or two or more species: 0.1 to 35%, with the remainder similarly consisting of titanium carbonitride as a hard phase forming component and unavoidable impurities (more than 2% by weight), and the hard phase is 2 In a cutting tool made of a titanium carbonitride-based cermet with a heavy phase structure (core structure) structure, a surface hard layer consisting of a hard phase of a single phase structure and a binder phase is formed on the surface of the cutting tool with an average layer thickness of 1 to 10 μm. Titanium carbonitride-based cermet cutting tool with excellent wear resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22607588A JPH0276606A (en) | 1988-09-09 | 1988-09-09 | Cutting tool made of high abrasion-resistant titanium carbide-nitride radical cermet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22607588A JPH0276606A (en) | 1988-09-09 | 1988-09-09 | Cutting tool made of high abrasion-resistant titanium carbide-nitride radical cermet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0276606A true JPH0276606A (en) | 1990-03-16 |
| JPH0513762B2 JPH0513762B2 (en) | 1993-02-23 |
Family
ID=16839423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22607588A Granted JPH0276606A (en) | 1988-09-09 | 1988-09-09 | Cutting tool made of high abrasion-resistant titanium carbide-nitride radical cermet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0276606A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000328169A (en) * | 1999-05-03 | 2000-11-28 | Sandvik Ab | Titanium base carbonitride alloy |
| JP2000336450A (en) * | 1999-05-03 | 2000-12-05 | Sandvik Ab | Titanium base carbonitride alloy |
| JP2014029001A (en) * | 2012-07-31 | 2014-02-13 | Sumitomo Electric Hardmetal Corp | Cermet, method for manufacturing the cermet, and cutting tool |
| WO2014054681A1 (en) * | 2012-10-02 | 2014-04-10 | 株式会社タンガロイ | Cermet tool |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54139815A (en) * | 1978-04-24 | 1979-10-30 | Mitsubishi Metal Corp | Sintered hard alloy having hardened surface layer |
| JPS54150411A (en) * | 1978-05-19 | 1979-11-26 | Mitsubishi Metal Corp | Tough thermet having soft surface layer |
| JPS62278267A (en) * | 1986-05-24 | 1987-12-03 | Hitachi Tool Eng Ltd | Surface-coated ticn cermet |
-
1988
- 1988-09-09 JP JP22607588A patent/JPH0276606A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54139815A (en) * | 1978-04-24 | 1979-10-30 | Mitsubishi Metal Corp | Sintered hard alloy having hardened surface layer |
| JPS54150411A (en) * | 1978-05-19 | 1979-11-26 | Mitsubishi Metal Corp | Tough thermet having soft surface layer |
| JPS62278267A (en) * | 1986-05-24 | 1987-12-03 | Hitachi Tool Eng Ltd | Surface-coated ticn cermet |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000328169A (en) * | 1999-05-03 | 2000-11-28 | Sandvik Ab | Titanium base carbonitride alloy |
| JP2000336450A (en) * | 1999-05-03 | 2000-12-05 | Sandvik Ab | Titanium base carbonitride alloy |
| JP2014029001A (en) * | 2012-07-31 | 2014-02-13 | Sumitomo Electric Hardmetal Corp | Cermet, method for manufacturing the cermet, and cutting tool |
| WO2014054681A1 (en) * | 2012-10-02 | 2014-04-10 | 株式会社タンガロイ | Cermet tool |
| JP5900638B2 (en) * | 2012-10-02 | 2016-04-06 | 株式会社タンガロイ | Cermet tool |
| JPWO2014054681A1 (en) * | 2012-10-02 | 2016-08-25 | 株式会社タンガロイ | Cermet tool |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0513762B2 (en) | 1993-02-23 |
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