JPH1161317A - Ball end mill made of cemented carbide, having ball nose end half excellent in wear resistance - Google Patents
Ball end mill made of cemented carbide, having ball nose end half excellent in wear resistanceInfo
- Publication number
- JPH1161317A JPH1161317A JP9224838A JP22483897A JPH1161317A JP H1161317 A JPH1161317 A JP H1161317A JP 9224838 A JP9224838 A JP 9224838A JP 22483897 A JP22483897 A JP 22483897A JP H1161317 A JPH1161317 A JP H1161317A
- Authority
- JP
- Japan
- Prior art keywords
- ball
- cemented carbide
- coercive force
- end mill
- ball nose
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
- B23C5/1009—Ball nose end mills
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、ボールノーズ部
の先端半部がすぐれた耐摩耗性を示し、長期に亘ってす
ぐれた切削性能を発揮する超硬合金製ボールエンドミル
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cemented carbide ball end mill in which the tip half of a ball nose exhibits excellent wear resistance and exhibits excellent cutting performance over a long period of time.
【０００２】[0002]
【従来の技術】従来、一般に、ボールエンドミルが、鋼
や鋳鉄、さらにＡｌ合金やカーボンなどの切削加工用工
具として知られ、これが、図２に概略正面図で示される
ように、先端部のボールノーズ部と、切刃本体と、シャ
ンク部からなり、前記ボールノーズ部における切刃が半
径ｒの半球面上に形成された構造をもつことも良く知ら
れるところである。また、上記ボールエンドミルが、重
量％で（以下、％は重量％を示す）、結合相形成成分と
して、Ｃｏ：８〜１６％およびＣｒ：０．１〜３％を含
有し、残りが分散相形成成分としての炭化タングステン
（以下、ＷＣで示す）と不可避不純物からなる組成をも
ち、かつ先端部のボールノーズ部からシャンク部にかけ
て０．６〜１．２μｍの範囲内の所定の平均粒径を有す
るＷＣ粒で構成された均等組織をもった超硬合金からな
ることも知られている。2. Description of the Related Art Conventionally, a ball end mill is generally known as a tool for cutting steel, cast iron, Al alloy, carbon, or the like. As shown in a schematic front view of FIG. It is well known that the nose portion, the cutting blade body, and the shank portion have a structure in which the cutting edge of the ball nose portion is formed on a hemispherical surface having a radius r. The ball end mill contains 8 to 16% of Co and 0.1 to 3% of Cr as a binder phase forming component in weight% (hereinafter,% indicates weight%), and the remainder is a dispersed phase. It has a composition consisting of tungsten carbide (hereinafter referred to as WC) as a forming component and unavoidable impurities, and has a predetermined average particle size in the range of 0.6 to 1.2 μm from the ball nose portion to the shank portion at the tip. It is also known that it is made of a cemented carbide having a uniform structure composed of WC grains.
【０００３】[0003]
【発明が解決しようとする課題】一方、近年の切削加工
は、切削加工装置の高性能化と相まって高精密化の傾向
にあり、これに伴ってボールエンドミルは細径化および
長尺化が不可欠の条件となっているが、ボールエンドミ
ルの細径化および長尺化のためにはＷＣ粒を微細化して
高強度を具備せしめることが必要であり、このようにＷ
Ｃ粒が微細化すればするほどボールエンドミルは高強度
をもつようになり、これの一層の細径化および長尺化が
可能となるが、ＷＣ粒を微細化すればするほどボールエ
ンドミルのボールノーズ部における先端部の摩耗進行が
促進されるようになって、使用寿命の短命化が避けられ
ないのが現状である。On the other hand, cutting in recent years tends to be highly precise in combination with the high performance of the cutting apparatus, and accordingly, the ball end mill must be reduced in diameter and length. However, in order to reduce the diameter and length of the ball end mill, it is necessary to refine the WC grains to provide high strength.
The finer the C grains, the higher the strength of the ball end mill, and the further the diameter and length of the ball end mill can be further increased. At present, the progress of abrasion at the tip of the nose is promoted, and shortening of service life is inevitable.
【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、特にボールエンドミルにおける
ボールノーズ部の先端半部の摩耗抑制に着目し、研究を
行った結果、 （ａ）切削加工時におけるボールノーズ部では、これの
最先端（中心点）は静止状態にあり、この最先端から切
刃本体に向けて周速は漸次増加する状態にあり、この状
態において、ボールノーズ部の先端半部のＷＣ粒の粒径
をこれ以外の部分のそれに比して粗粒にしてやると、前
記ボールノーズ部の先端半部の摩耗が著しく抑制される
ようになること。 （ｂ）超硬合金におけるＷＣ粒の粒径とこれの示す抗磁
力との間には相関関係があり、ＷＣ粒の粒径が粗くなる
ほど、これの示す抗磁力は低下するようになるが、超硬
合金の組成を、結合相形成成分として、Ｃｏ：９〜１２
％およびＣｒ：０．１〜２％を含有し、残りが分散相形
成成分としてのＷＣと不可避不純物からなる組成に特定
した上で、超硬合金の示す抗磁力とＷＣ粒の平均粒径と
の関係を調べると図１に示される結果を示し、図１にお
いて、ボールノーズ部の先端半部のＷＣ粒の平均粒径が
２〜３μｍの範囲内の値、すなわち前記先端半部を抗磁
力で測定して１４０〜２１０Ｏe を示す超硬合金とし、
これ以外の部分のＷＣ粒の平均粒径が０．７〜０．９μ
ｍの範囲内の値、すなわち同じくこれの抗磁力を測定し
た場合に２２０〜３４０Ｏe を示す超硬合金で構成する
と、前記ボールノーズ部の先端半部の耐摩耗性が著しく
向上し、かつこれ以外の部分は高強度を具備するように
なってボールエンドミルの細径化および長尺化を可能と
した上で、使用寿命の著しい延命化が図れること。 以上（ａ）および（ｂ）に示される研究結果を得たので
ある。Means for Solving the Problems Accordingly, the present inventors have
From the above viewpoints, we focused on the suppression of wear at the tip half of the ball nose in a ball end mill, and conducted research. As a result, (a) the ball nose at the cutting end ) Is in a stationary state, and the peripheral speed gradually increases from the foremost end toward the cutting blade main body. In this state, the particle size of the WC particles at the tip half of the ball nose part is reduced. If the grain size is made coarser than that, wear of the tip half of the ball nose portion is significantly suppressed. (B) There is a correlation between the grain size of the WC grains and the coercive force shown in the cemented carbide, and the coarser the grain size of the WC grains, the lower the coercive force shown, The composition of the cemented carbide is defined as Co: 9-12
% And Cr: 0.1 to 2%, the balance being specified to be a composition comprising WC as a disperse phase forming component and unavoidable impurities, the coercive force of the cemented carbide and the average particle size of the WC grains. The results shown in FIG. 1 are shown in FIG. 1. In FIG. 1, the average particle diameter of the WC grains at the tip half of the ball nose is in the range of 2 to 3 μm, that is, the tip half has a coercive force. Cemented carbide showing 140-210 Oe as measured by
The average particle diameter of the WC particles in other parts is 0.7 to 0.9 μm
When it is made of a cemented carbide having a value in the range of m, that is, 220 to 340 Oe when its coercive force is measured, the wear resistance of the tip half of the ball nose part is remarkably improved. Has a high strength so that the diameter and length of the ball end mill can be reduced, and the service life can be remarkably prolonged. The research results shown in (a) and (b) above were obtained.
【０００５】この発明は、上記の研究結果に基づいてな
されたものであって、結合相形成成分として、Ｃｏ：９
〜１２％およびＣｒ：０．１〜２％を含有し、残りが分
散相形成成分としてのＷＣと不可避不純物からなる組成
を有し、かつボールノーズ部の先端半部のＷＣ粒をこれ
以外の部分のＷＣ粒に比して相対的に粗粒とし、添付の
図１の超硬合金の示す抗磁力とＷＣ粒の平均粒径との関
係図において、上記ボールノーズ部の先端半部が１４０
〜２１０Ｏe 、これ以外の部分が２２０〜３４Ｏe の抗
磁力をそれぞれ示す超硬合金で構成してなる、ボールノ
ーズ部の先端半部がすぐれた耐摩耗性を示す超硬合金製
ボールエンドミルに特徴を有するものである。The present invention has been made on the basis of the above-mentioned research results, and has Co: 9 as a binder phase forming component.
-12% and Cr: 0.1-2%, the balance being composed of WC as a dispersed phase forming component and unavoidable impurities, and the WC grains in the tip half of the ball nose portion being other than this. In the graph showing the relationship between the coercive force of the cemented carbide and the average grain size of the WC grains shown in FIG.
The characteristic feature is a cemented carbide ball end mill in which the tip half of the ball nose portion has excellent abrasion resistance, the cemented carbide being composed of a cemented carbide exhibiting coercive force of 220 to 34 Oe. Have
【０００６】つぎに、この発明のボールエンドミルにお
いて、これを構成する超硬合金の組成およびこれの示す
抗磁力を上記の通りに限定した理由を説明する。 （Ａ）超硬合金の組成 （ａ）Ｃｏ Ｃｏ成分には、焼結性を向上させ、もって強度を向上さ
せる作用があるが、その含有量が９％未満では細径化お
よび長尺化に必要な所望の高強度を確保することができ
ず、一方その含有量が１２％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９〜１２％、望
ましくは９．５〜１１％と定めた。Next, in the ball end mill of the present invention, the composition of the cemented carbide constituting the ball end mill and the reason why the coercive force indicated by the composition is limited as described above will be described. (A) Composition of cemented carbide (a) Co The Co component has the effect of improving the sinterability and hence the strength. However, if the content is less than 9%, the diameter becomes small and the length becomes long. If the content exceeds 12%, the abrasion resistance decreases, so that the required high strength cannot be ensured, so that the content is 9 to 12%, preferably 9.5. １１11%.
【０００７】（ｂ）Ｃｒ Ｃｒ成分には、原料粉末であるＷＣ粉末が焼結時に粗大
化しない、すなわち原料粉末時の平均粒径を焼結後も保
持するようにする作用があり、したがって原料粉末のＷ
Ｃ粉末の平均粒径を調整するすることにより、ボールノ
ーズ部の先端半部のＷＣ粒の平均粒径を２〜３μｍにし
て、この部分の示す抗磁力を１４０〜２１０Ｏe とし、
かつこれ以外のＷＣ粒の平均粒径を０．７〜０．９μｍ
にして、これの示す抗磁力を２２０〜３４０Ｏe とする
には不可欠の成分であるが、その含有量が０．１％未満
ではＷＣ粒の粒度調整が困難になり、原料粉末であるＷ
Ｃ粉末の平均粒径を調整しても、ボールノーズ部の先端
半部ではＷＣ粒の平均粒径が３μｍを越え、またこれ以
外の部分では同０．９μｍを越える場合が発生し、それ
ぞれ所望の耐摩耗性および強度を確保することができ
ず、一方その含有量が２％を越えると、ＣｒとＷの複合
炭化物が析出するようになって、強度が急激に低下する
ことから、その含有量を０．１〜２％、望ましくは０．
４〜１．２％と定めた。(B) Cr The Cr component has the function of preventing the WC powder, which is the raw material powder, from coarsening during sintering, that is, maintaining the average particle size of the raw material powder even after sintering. Powder W
By adjusting the average particle size of the C powder, the average particle size of the WC particles at the tip half of the ball nose portion is set to 2 to 3 μm, and the coercive force of this portion is set to 140 to 210 Oe.
And the average particle size of the other WC particles is 0.7 to 0.9 μm
Is an indispensable component to make the coercive force indicated by this range from 220 to 340 Oe, but if its content is less than 0.1%, it becomes difficult to adjust the particle size of the WC particles, and the raw material powder W
Even if the average particle size of the C powder is adjusted, the average particle size of the WC particles may exceed 3 μm in the tip half of the ball nose portion, and may exceed 0.9 μm in other portions. When the content exceeds 2%, the composite carbide of Cr and W precipitates out, and the strength rapidly decreases. The amount is 0.1 to 2%, preferably 0.1 to 2%.
It was determined to be 4-1.2%.
【０００８】（Ｂ）抗磁力 （ａ）ボールノーズ部の先端半部 この部分の示す抗磁力が２１０Ｏe を越えるということ
は、ＷＣ粒の平均粒径が２μｍ未満になることを意味
し、この場合所望のすぐれた耐摩耗性を確保することが
できず、一方同じく抗磁力が１４０Ｏe 未満となること
は、ＷＣ粒の平均粒径が３μｍを越えて粗大化している
ことを意味し、この場合は強度低下が著しいことから、
これの示す抗磁力を１４０〜２１０Ｏe 、望ましくは１
７０〜１９０Ｏe と定めた。(B) Coercive force (a) The tip half of the ball nose portion The coercive force indicated by this portion exceeds 210 Oe means that the average particle size of the WC grains is less than 2 μm. If the desired excellent wear resistance cannot be ensured, while the coercive force is less than 140 Oe, it means that the average particle size of the WC grains exceeds 3 μm, and in this case, Because the strength decrease is remarkable,
The coercive force indicated by this is 140 to 210 Oe, preferably 1
It was determined to be 70 to 190 Oe.
【０００９】（ｂ）これ以外の部分 この部分の示す抗磁力が３４０Ｏe を越えることは、Ｗ
Ｃ粒の平均粒径が０．７μｍ未満になることを示し、こ
のようにＷＣ粒の平均粒径が０．７μｍ未満になると、
特にボールノーズ部の上半部の耐摩耗性の進行が促進さ
れるようになり、一方同じく示す抗磁力が２２０Ｏe 未
満になることは、ＷＣ粒の平均粒径が０．９μｍを越え
て粗粒となっていることを意味し、この場合には細径化
および長尺化に必要な所望の高強度を確保することがで
きないことから、これの示す抗磁力を２２０〜３４０Ｏ
e 、望ましくは２４０〜２６０Ｏe と定めた。(B) Other parts The coercive force indicated by this part exceeds 340 Oe.
This indicates that the average particle size of the C particles is less than 0.7 μm. Thus, when the average particle size of the WC particles is less than 0.7 μm,
In particular, the progress of abrasion resistance in the upper half of the ball nose is promoted, while the same coercive force is less than 220 Oe, which means that the average particle diameter of WC grains exceeds 0.9 μm In this case, it is not possible to secure the desired high strength required for the reduction in diameter and length, and thus the coercive force indicated by 220 to 340 O
e, desirably 240 to 260 Oe.
【００１０】[0010]
【発明の実施の形態】つぎに、この発明の超硬合金製ボ
ールエンドミルを実施例により具体的に説明する。原料
粉末として、それぞれ表１に示される平均粒径をもった
ＷＣ粉末、平均粒径：１．２μｍのＣｏ粉末、および同
２μｍのＣｒ3 Ｃ2 粉末を用意し、これら原料粉末を、
ボールノーズ部の先端半部（以下、単に先端半部と云
う）およびその他部分を形成する目的で、それぞれ表１
に示される配合組成に配合し、ボールミルで２４時間湿
式混合し、乾燥した後、まず先端半部形成用混合粉末
を、中心線深さ：１２７ｍｍ×径：１２．７ｍｍ×ボー
ルノーズ部のｒ：６．３５ｍｍのキャビテイ寸法をもっ
た金型内に最先端から７ｍｍの高さ位置まで装入し、つ
いでその他部分形成用混合粉末を充填し、１０ｋｇ／ｍ
ｍ2 の圧力で圧粉体にプレス成形し、この圧粉体を０．
１ｔｏｒｒ以下の真空中、１３５０〜１５００℃の範囲
内の所定温度に１．５時間保持の条件で焼結し、この焼
結体に切削加工を施すことにより、図２に示される形状
および長さ：１００ｍｍ×径：１０ｍｍ×ボールノーズ
部のｒ：５ｍｍの寸法をもち、かつ上記配合組成と実質
的に同じ成分組成を有し、さらに原料粉末として用いた
ＷＣ粉末の平均粒径と実質的に変わらない平均粒径のＷ
Ｃ粒で構成された超硬合金からなる本発明超硬合金製ボ
ールエンドミル（以下、本発明ボールエンドミルと云
う）１〜７をそれぞれ製造した。また、比較の目的で、
表１に示される通り先端半部を形成するのに用いる原料
粉末としてのＷＣ粉末の平均粒径を、その他部分を形成
するのに用いるＷＣ粉末の平均粒径と同じくする以外は
同一の条件で比較超硬合金製ボールエンドミル（以下、
比較ボールエンドミルと云う）１〜７をそれぞれ製造し
た。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a cemented carbide ball end mill of the present invention will be specifically described with reference to examples. As raw material powders, a WC powder having an average particle diameter shown in Table 1, a Co powder having an average particle diameter of 1.2 μm, and a Cr 3 C 2 powder having an average particle diameter of 2 μm were prepared.
For the purpose of forming the tip half of the ball nose (hereinafter simply referred to as the tip half) and other portions, each of Table 1 was used.
The mixture was wet-mixed in a ball mill for 24 hours, and dried. After that, the mixed powder for forming the front half portion was first subjected to center line depth: 127 mm x diameter: 12.7 mm x ball nose portion r: A mold having a cavity size of 6.35 mm is charged to a height position of 7 mm from the forefront, and then the mixed powder for forming other parts is filled into the mold and 10 kg / m.
The green compact is pressed into a green compact at a pressure of 0.2 m 2 .
By sintering in a vacuum of 1 torr or less at a predetermined temperature in the range of 1350 to 1500 ° C. for 1.5 hours, and cutting this sintered body, the shape and length shown in FIG. : 100 mm × diameter: 10 mm × r of ball nose part: 5 mm, having substantially the same composition as the above-mentioned composition, and substantially the average particle diameter of WC powder used as a raw material powder W of average particle size that does not change
Ball end mills (hereinafter referred to as ball end mills of the present invention) 1 to 7 of the present invention made of a cemented carbide composed of C grains were manufactured, respectively. Also, for comparison purposes,
As shown in Table 1, under the same conditions except that the average particle size of the WC powder used as the raw material powder used to form the tip half is the same as the average particle size of the WC powder used to form the other portions. Comparative cemented carbide ball end mill
Comparative ball end mills) 1 to 7 were manufactured respectively.
【００１１】この結果得られた各種のボールエンドミル
について、ボールノーズ部を切り落とし、これをさらに
先端半部と上半部（その他部分）に分け、この先端半部
と上半部のヒステリシス曲線をＣＩＳ（超硬工具協会）
規格に基づいて測定し、これより抗磁力を求めた。ま
た、上記の各種ボールエンドミルを用いて、 被削材：ＪＩＳ・ＳＣＭ４４０、 切削速度：１００ｍ／ｍｉｎ、 送り：０．１ｍｍ／刃、 軸方向切り込み：３．５ｍｍ、 径方向切り込み：１ｍｍ、 の条件で合金鋼の乾式溝加工を行い、ボールエンドミル
の最先端部における摩耗深さが０．２ｍｍに至るまでの
加工溝長さを測定した。これらの結果を表１に合せて示
した。With respect to the various ball end mills obtained as a result, the ball nose portion was cut off, and the ball nose portion was further divided into a tip half portion and an upper half portion (other portion). A hysteresis curve of the tip half portion and the upper half portion was obtained by CIS. (Carbide Tool Association)
The coercive force was determined from the measurement based on the standard. In addition, using the various ball end mills described above, work material: JIS SCM440, cutting speed: 100 m / min, feed: 0.1 mm / blade, axial cut: 3.5 mm, radial cut: 1 mm , Dry groove processing of the alloy steel was performed, and the processing groove length until the wear depth at the foremost part of the ball end mill reached 0.2 mm was measured. The results are shown in Table 1.
【００１２】[0012]
【表１】 [Table 1]
【００１３】[0013]
【発明の効果】表１に示される結果から、先端半部のＷ
Ｃ粒の平均粒径がその他部分のそれに比して相対的に粗
粒であり、これによってそれぞれの示す抗磁力も異なっ
たものになる本発明ボールエンドミル１〜７は、いずれ
もＷＣ粒の平均粒径が全長に亘って同じであり、この結
果抗磁力も同じ値を示すようになる比較ボールエンドミ
ル１〜７に比して、著し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、この発明のボールエン
ドミルは、これの細径化および長尺化を可能とする高強
度を具備した上で、ボールノーズ部の先端半部はすぐれ
た耐摩耗性を長期に亘って発揮するものであり、したが
って切削加工の高精密化にも十分満足に対応するもので
ある。From the results shown in Table 1, it is found that the W at the tip half
The ball end mills 1 to 7 according to the present invention, in which the average grain size of the C grains is relatively coarse as compared with those of the other parts and the coercive force indicated by each of them is different, It is evident that compared to the comparative ball end mills 1 to 7, which have the same particle size over the entire length and thus the same coercive force, they exhibit significantly better wear resistance. As described above, the ball end mill of the present invention has a high strength that allows the diameter and length of the ball end mill to be reduced, and the tip half of the ball nose portion has excellent wear resistance over a long period of time. Therefore, it can sufficiently satisfy the high precision of the cutting process.
【図１】超硬合金の示す抗磁力とＷＣ粒の平均粒径との
関係図である。FIG. 1 is a graph showing the relationship between the coercive force of a cemented carbide and the average particle size of WC grains.
【図２】ボールエンドミルの概略正面図である。FIG. 2 is a schematic front view of a ball end mill.
Claims (1)
重量％およびＣｒ：０．１〜２重量％を含有し、残りが
分散相形成成分としての炭化タングステンと不可避不純
物からなる組成を有し、 かつボールノーズ部の先端半部の炭化タングステン粒を
これ以外の部分の炭化タングステン粒に比して相対的に
粗粒とし、 添付の図１の超硬合金の示す抗磁力と炭化タングステン
粒の平均粒径との関係図において、上記ボールノーズ部
の先端半部が１４０〜２１０Ｏe 、これ以外の部分が２
２０〜３４Ｏe の抗磁力をそれぞれ示す超硬合金で構成
したことを特徴とする、ボールノーズ部の先端半部がす
ぐれた耐摩耗性を示す超硬合金製ボールエンドミル。1. Co: 9 to 12 as a binder phase forming component
% By weight and Cr: 0.1 to 2% by weight, the balance being composed of tungsten carbide as a dispersed phase forming component and unavoidable impurities, and tungsten carbide particles at the tip half of the ball nose portion. In the graph of FIG. 1 showing the relationship between the coercive force of the cemented carbide and the average particle size of the tungsten carbide particles, the tip of the ball nose portion 140-210 Oe in half, 2 in other
A ball end mill made of a hard metal alloy having excellent wear resistance in which a tip half of a ball nose portion is excellent in wear resistance, wherein the ball end mill is made of a hard metal having a coercive force of 20 to 34 Oe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9224838A JPH1161317A (en) | 1997-08-21 | 1997-08-21 | Ball end mill made of cemented carbide, having ball nose end half excellent in wear resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9224838A JPH1161317A (en) | 1997-08-21 | 1997-08-21 | Ball end mill made of cemented carbide, having ball nose end half excellent in wear resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1161317A true JPH1161317A (en) | 1999-03-05 |
Family
ID=16819978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9224838A Withdrawn JPH1161317A (en) | 1997-08-21 | 1997-08-21 | Ball end mill made of cemented carbide, having ball nose end half excellent in wear resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1161317A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001287114A (en) * | 2000-04-10 | 2001-10-16 | Nachi Fujikoshi Corp | Cemented carbide end mill |
| WO2002014569A2 (en) * | 2000-08-11 | 2002-02-21 | Kennametal Inc. | Chromium-containing cemented tungsten carbide body |
| JP2002126934A (en) * | 2000-10-27 | 2002-05-08 | Nachi Fujikoshi Corp | Cemented carbide end mill |
| US6554548B1 (en) | 2000-08-11 | 2003-04-29 | Kennametal Inc. | Chromium-containing cemented carbide body having a surface zone of binder enrichment |
| JP2009034811A (en) * | 2007-06-15 | 2009-02-19 | Sandvik Intellectual Property Ab | Cemented carbide insert for parting, grooving and threading |
| JP2011504808A (en) * | 2007-11-16 | 2011-02-17 | ベーレリト ゲーエムベーハー ウント コー． カーゲー． | Friction stir welding tool |
| JP2012076156A (en) * | 2010-09-30 | 2012-04-19 | Sumitomo Electric Hardmetal Corp | Cemented carbide, and method of manufacturing the same |
| CN102985583A (en) * | 2010-06-07 | 2013-03-20 | 山特维克知识产权股份有限公司 | Coated cutting tool |
| EP2962793A4 (en) * | 2013-02-27 | 2016-12-07 | Kyocera Corp | Cutting tool |
-
1997
- 1997-08-21 JP JP9224838A patent/JPH1161317A/en not_active Withdrawn
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001287114A (en) * | 2000-04-10 | 2001-10-16 | Nachi Fujikoshi Corp | Cemented carbide end mill |
| WO2002014569A2 (en) * | 2000-08-11 | 2002-02-21 | Kennametal Inc. | Chromium-containing cemented tungsten carbide body |
| WO2002014569A3 (en) * | 2000-08-11 | 2002-06-27 | Kennametal Inc | Chromium-containing cemented tungsten carbide body |
| US6554548B1 (en) | 2000-08-11 | 2003-04-29 | Kennametal Inc. | Chromium-containing cemented carbide body having a surface zone of binder enrichment |
| US6866921B2 (en) | 2000-08-11 | 2005-03-15 | Kennametal Inc. | Chromium-containing cemented carbide body having a surface zone of binder enrichment |
| JP2002126934A (en) * | 2000-10-27 | 2002-05-08 | Nachi Fujikoshi Corp | Cemented carbide end mill |
| JP2009034811A (en) * | 2007-06-15 | 2009-02-19 | Sandvik Intellectual Property Ab | Cemented carbide insert for parting, grooving and threading |
| JP2011504808A (en) * | 2007-11-16 | 2011-02-17 | ベーレリト ゲーエムベーハー ウント コー． カーゲー． | Friction stir welding tool |
| CN102985583A (en) * | 2010-06-07 | 2013-03-20 | 山特维克知识产权股份有限公司 | Coated cutting tool |
| JP2012076156A (en) * | 2010-09-30 | 2012-04-19 | Sumitomo Electric Hardmetal Corp | Cemented carbide, and method of manufacturing the same |
| EP2962793A4 (en) * | 2013-02-27 | 2016-12-07 | Kyocera Corp | Cutting tool |
| US9694426B2 (en) | 2013-02-27 | 2017-07-04 | Kyocera Corporation | Cutting tool |
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