JPH0247207A - Hard alloy with tic-based cermet layer formed on surface - Google Patents
Hard alloy with tic-based cermet layer formed on surfaceInfo
- Publication number
- JPH0247207A JPH0247207A JP19638288A JP19638288A JPH0247207A JP H0247207 A JPH0247207 A JP H0247207A JP 19638288 A JP19638288 A JP 19638288A JP 19638288 A JP19638288 A JP 19638288A JP H0247207 A JPH0247207 A JP H0247207A
- Authority
- JP
- Japan
- Prior art keywords
- hard alloy
- tic
- alloy
- layer
- powder
- 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.)
- Pending
Links
- 239000000956 alloy Substances 0.000 title claims abstract description 30
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 30
- 239000011195 cermet Substances 0.000 title abstract description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000000843 powder Substances 0.000 abstract description 11
- 239000010410 layer Substances 0.000 description 15
- 238000005520 cutting process Methods 0.000 description 13
- 238000005245 sintering Methods 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 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 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229910003468 tantalcarbide Inorganic materials 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、切削工具や耐摩耗工具に用いる耐摩耗性にす
ぐれた硬質焼結合金に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a hard sintered alloy with excellent wear resistance for use in cutting tools and wear-resistant tools.
［従来技術と、その問題点］
従来、超硬合金は切削工具や耐摩耗工具に広く使われて
いるが、近年使用条件の大巾な向上により耐摩耗性に幾
分の問題点を有するようになり、高速切削や熱間での圧
延ロールまたは鍛造金型などに用いた場合は、摩耗の促
進が速くなり、工具寿命が短くなる。[Prior art and its problems] Conventionally, cemented carbide has been widely used for cutting tools and wear-resistant tools, but due to the drastic improvement in usage conditions in recent years, it seems that it has some problems in wear resistance. Therefore, when used in high-speed cutting or hot rolling rolls or forging molds, wear accelerates and tool life is shortened.
そこで、前記の超硬合金の表面に炭化チタンや窒化チタ
ンあるいは酸化アルミニウムの薄膜を化学的に、または
物理的に蒸着させ、該合金の耐摩耗性を向上させること
がおこなわれているが、超硬合金に上記した薄膜を化学
蒸着法や物理蒸着法によって形成させることは、その装
置自体が高価なもので、その装置に要した投資額が必然
的に製品コスト（こ跳ね返る。Therefore, attempts have been made to chemically or physically deposit a thin film of titanium carbide, titanium nitride, or aluminum oxide on the surface of the cemented carbide to improve the wear resistance of the alloy. When forming the above-mentioned thin film on a hard metal by chemical vapor deposition or physical vapor deposition, the equipment itself is expensive, and the investment required for the equipment inevitably increases the product cost.
したがって超硬合金に前記薄膜を形成したものは高価格
なものになるという問題点を有している。Therefore, a problem arises in that a cemented carbide with the thin film formed thereon is expensive.
［発明の目的］
本発明は、上記した問題点に鑑みなしたもので、高価な
装置を必要とすることなく、超硬合金をさらに耐摩耗性
を高め、製品コストを押えながら工具寿命を大巾に延ば
すことが可能な硬質焼結合金を提供することを目的とす
るものである。[Object of the Invention] The present invention was made in view of the above-mentioned problems, and it is possible to further improve the wear resistance of cemented carbide without the need for expensive equipment, and to extend tool life while reducing product costs. The object of the present invention is to provide a hard sintered alloy that can be stretched across a wide range.
［問題点を解決するための手段コ
本発明は、前々記した問題点を下記する手段によって解
決したものである。[Means for Solving the Problems] The present invention solves the above-mentioned problems by the following means.
すなわち、硬質合金の表面に、焼結時に該合金から析出
されるコバルトおよび／またはニッケルなどによって結
合されたＴｉＣ層または（Ｔｉ−Ｗ）Ｃ層が厚み５μか
ら１００μ形成させた硬質焼結合金としたものである。That is, a hard sintered alloy in which a TiC layer or (Ti-W)C layer is formed on the surface of the hard alloy with a thickness of 5 μm to 100 μm bonded by cobalt and/or nickel etc. precipitated from the alloy during sintering. This is what I did.
［発明の作用］
上記した構成の本発明になる硬質焼結合金は次のように
して得るものである。[Operation of the Invention] The hard sintered alloy according to the present invention having the above-described structure is obtained as follows.
すなわち、炭化タングステンや炭化チタンまたは窒化チ
タンや炭化タンタルの粉末にコバルトやニッケルなどを
適量添加し、これを混合撹拌して得た粉末を圧粉体とし
、該圧粉体を予備焼結してセミシン体を得、このセミシ
ン体を５０ｃｃのアルコールに対して粒度１．２μ程度
の炭化チタン粉末を５ｇ分散させた液中へ浸漬し、つい
で前記液中から該セミシン体を取り出して自然乾燥させ
たものを真空中にて１３６０℃〜１４５０″Ｃの温度を
約６０分間加えて得るものである。That is, an appropriate amount of cobalt, nickel, etc. is added to the powder of tungsten carbide, titanium carbide, titanium nitride, or tantalum carbide, and the powder obtained by mixing and stirring is made into a powder compact, and the compact is pre-sintered. A semi-thin body was obtained, and this semi-thin body was immersed in a liquid in which 5 g of titanium carbide powder with a particle size of about 1.2 μ was dispersed in 50 cc of alcohol, and then the semi-thin body was taken out from the liquid and air-dried. It is obtained by applying a temperature of 1360° C. to 1450° C. for about 60 minutes in a vacuum.
これにより前記硬質焼結合金の表面部には５μから１０
０μ程度の耐摩耗に富むＴｉＣ系サーメツト層が形成で
きる。As a result, the surface of the hard sintered alloy has a surface area of 5 to 10 μm.
A TiC-based cermet layer with excellent wear resistance of about 0μ can be formed.
このＴｉＣ系サーメツト層を有せしめた硬質焼結合金は
、該合金から析出するコバルトやニッケルによって銀層
は該合金の表面部に固着されるので被膜の強度はきわめ
て高くなる。In a hard sintered alloy having a TiC-based cermet layer, the silver layer is fixed to the surface of the alloy by the cobalt and nickel precipitated from the alloy, so the strength of the coating is extremely high.
しかも前記合金と表面層とは熱膨張係数がきわめて近接
しているので残留応力も少なく、合金の焼結と同時に層
の形成ができるので密着性が大巾に向上して耐ハクリ性
ならびに耐欠損性を大きく改善する。Moreover, since the thermal expansion coefficients of the alloy and the surface layer are very close, there is little residual stress, and since the layer can be formed at the same time as the alloy is sintered, the adhesion is greatly improved, resulting in peeling and chipping resistance. Greatly improve your sexuality.
また、耐摩耗性の向上と共に、耐溶着性も改善されるの
で良好な被削面精度が得られ仕上げ切削に適するように
なる。Furthermore, since the wear resistance is improved and the adhesion resistance is also improved, good work surface accuracy can be obtained, making it suitable for finish cutting.
なお、前記した層の厚みは、５μを下層ると工具寿命は
短くなる恐れがあるし、１００μを越える層の形成は、
該合金から銀層がハクリする危険性と製造コストかや−
高くなるので好ましくない。Note that if the thickness of the layer mentioned above is less than 5μ, the tool life may be shortened, and if the thickness of the layer exceeds 100μ,
The risk of the silver layer peeling off from the alloy and the manufacturing cost.
I don't like it because it's expensive.
［実施例］ 以下、本発明の実施例について述べる。[Example] Examples of the present invention will be described below.
表−１に示す組成の粉末を溶媒中で混合撹拌し、これを
乾燥させて得た粉末をプレス形成して所定形状の圧粉体
とした。Powder having the composition shown in Table 1 was mixed and stirred in a solvent, and the powder obtained by drying the powder was press-formed to obtain a green compact in a predetermined shape.
この圧粉体を焼結炉内に載置し、真空中で温度７００℃
〜８３０℃を３０分間加えておこなう予備焼結によって
セミシン体を得た。This green compact was placed in a sintering furnace at a temperature of 700°C in a vacuum.
A semi-thin body was obtained by preliminary sintering at ~830°C for 30 minutes.
他方、容器にアルコール（ヘキサン、アセトンなどの有
機溶媒でも可）５０ｃｃに対して粒度１．２μ程度の炭
化チタン粉末を５ｇ添加して混合した液を用意した。On the other hand, a liquid was prepared in a container by adding and mixing 5 g of titanium carbide powder with a particle size of about 1.2 μm to 50 cc of alcohol (an organic solvent such as hexane or acetone is also acceptable).
上記した液中へ前記したセミシン体を浸漬させた後、こ
れを取り出して自然乾燥させた。After the semi-thin body was immersed in the above solution, it was taken out and air-dried.
なお、層の厚みのコントロールは、有機溶媒に対する添
加粉末の量の増減、または該層への浸漬回数の増減など
によっておこなうものである。The thickness of the layer is controlled by increasing or decreasing the amount of powder added to the organic solvent or by increasing or decreasing the number of times the layer is immersed.
前記したセミシン体を焼結炉内に載置して真空下で１３
６０℃〜１４５０℃の温度を約６０分間加えて焼結して
硬質焼結合金を得た。The above-described semi-thin body was placed in a sintering furnace and heated for 13 minutes under vacuum.
A hard sintered alloy was obtained by sintering at a temperature of 60° C. to 1450° C. for about 60 minutes.
以上の硬質焼結合金は、その表面部に５μから１００μ
程度の層が形成されていた、これの詳細も表−１に示す
。The above hard sintered alloy has a surface area of 5μ to 100μ
The details of this are also shown in Table 1.
なお、前記層を観察した結果、ＴｉＣ核の周りにＷを固
溶した周辺組織を有する、いわゆるＴｉＣ系サーメツト
層であった。Note that, as a result of observing the layer, it was found to be a so-called TiC-based cermet layer having a peripheral structure containing W as a solid solution around a TiC nucleus.
また銀層の硬度は、該合金の銀層を取り除いた部分と比
較して３００ｍＨｖ （荷重３００ｇ）程度高いもので
あった。Further, the hardness of the silver layer was approximately 300 mHv (load: 300 g) higher than that of the portion of the alloy from which the silver layer was removed.
表−１
［発明の効果コ
上記した本発明になる硬質合金から旋削用チップに形成
したものと、比較のために市販されている旋削用チップ
とを用意して性能テストをおこなった。なお、その詳細
は以下のとおりである。Table 1 [Effects of the Invention] A performance test was conducted using a turning tip formed from the above-mentioned hard alloy according to the present invention and a commercially available turning tip for comparison. The details are as follows.
テスト１
チップ型番ＳＮＭＮ１２０４０８のに４０ （ＪｉＳＢ
４１０４）の比較チップと、同型番の本発明になるチッ
プをバイトホルダーに固定し、これをＣＮＣ旋盤（４０
ＫＷ馬力）に装着して外径３０Ｃ）ｉｎのＦｅ１２材（
Ｈｓ２２＞を乾式切削で、切削速度１００ｍ／ｍｉｎ、
送り０．２ｍｍ／ｒｅＶ、切り込み２．０ｍｍを与えて
試験した以上の結果、比較品であるに４０のチップは、
約２５分間の切削で、フランク摩耗は０．４順であった
のに対し、本発明になるチップは、約２５分間切削した
時点でのフランク摩耗は０．２ｍｍであった。Test 1 Chip model number SNMN120408 40 (JiSB
A comparative tip (4104) and a tip of the present invention of the same model number were fixed to a tool holder, and then placed on a CNC lathe (4104).
Fe12 material (KW horsepower) with an outer diameter of 30C)
Hs22> by dry cutting, cutting speed 100m/min,
As a result of testing with a feed rate of 0.2 mm/reV and a depth of cut of 2.0 mm, the comparative chip No. 40 had the following results:
After about 25 minutes of cutting, the flank wear was on the order of 0.4, whereas with the tip of the present invention, the flank wear after about 25 minutes of cutting was 0.2 mm.
テスト２
また、チップ型番ＣＮＭＧ１２０４０８ＧＧのＰＩＯ（
ＪｉＳＢ４１０４）の比較チップと、同型番の本発明に
なるチップをバイトホルダーに固定し、これをＣＮＣ旋
盤（４０ＫＷ馬力）に装着して外径１００順の５Ｃｒ４
２０Ｈ材（Ｈｓ２３）を乾式切削で、切削速度１５０ｍ
／ｍｉｎ、送り０．２ｍｍ／ｒｅｖ、切込み２．０正を
与えて試験したものは、比較的チップが１０分間の切削
で０．３３ｍｍのフランク摩耗をみたのに対し、本発明
になるチップは、約３５分間切削したときのフランク摩
耗は０２６龍であった。Test 2 Also, PIO of chip model number CNMG120408GG (
JiSB4104) comparison tip and the present invention tip of the same model number were fixed to a tool holder, and these were mounted on a CNC lathe (40KW horsepower) to make 5Cr4 in order of outer diameter 100.
Dry cutting of 20H material (Hs23) at a cutting speed of 150 m.
/min, feed rate 0.2 mm/rev, and depth of cut 2.0 positive, the insert showed flank wear of 0.33 mm after 10 minutes of cutting, whereas the insert according to the present invention , the flank wear was 0.26 dragons when cutting for about 35 minutes.
本発明は、以上に述べた如く、従来のチップに比べて格
段にすぐれた耐摩耗性を有し、かつ耐溶着性も大きく改
善されることにより、高精度な仕上面が得られるように
なったのと同時に、硬質合金に形成する高硬度の被膜が
きわめて容易に形成でき被膜形成コストを大きく低減さ
せた。As described above, the present invention has much better wear resistance than conventional tips, and greatly improves welding resistance, making it possible to obtain highly accurate finished surfaces. At the same time, it was possible to form a highly hard coating on a hard alloy extremely easily, greatly reducing the cost of coating.
また、該合金の表面硬度がきわめて高いことから切削工
具はもとより耐摩耗性が大きく要求される塑性加工用工
具、すなわち圧延ロールや鍛造用金型などに用いて大き
く効果を発揮するものである。In addition, since the surface hardness of this alloy is extremely high, it is highly effective when used not only in cutting tools but also in plastic working tools that require high wear resistance, such as rolling rolls and forging dies.
Claims (1)
トおよび／またはニッケルなどによつて結合されたＴｉ
Ｃ層または（Ｔｉ・Ｗ）Ｃ層が、厚み５μから１００μ
形成されていることを特徴とする硬質焼結合金。(1) Ti bonded to the surface of a hard alloy by cobalt and/or nickel precipitated from the alloy
C layer or (Ti/W)C layer has a thickness of 5μ to 100μ
A hard sintered alloy characterized by being formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19638288A JPH0247207A (en) | 1988-08-05 | 1988-08-05 | Hard alloy with tic-based cermet layer formed on surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19638288A JPH0247207A (en) | 1988-08-05 | 1988-08-05 | Hard alloy with tic-based cermet layer formed on surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0247207A true JPH0247207A (en) | 1990-02-16 |
Family
ID=16356942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19638288A Pending JPH0247207A (en) | 1988-08-05 | 1988-08-05 | Hard alloy with tic-based cermet layer formed on surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0247207A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011177716A (en) * | 2010-02-26 | 2011-09-15 | Showa Denko Kk | Forging die, method for manufacturing the same, and forging method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4832734A (en) * | 1971-09-01 | 1973-05-02 | ||
| JPS4841124A (en) * | 1971-09-29 | 1973-06-16 |
-
1988
- 1988-08-05 JP JP19638288A patent/JPH0247207A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4832734A (en) * | 1971-09-01 | 1973-05-02 | ||
| JPS4841124A (en) * | 1971-09-29 | 1973-06-16 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011177716A (en) * | 2010-02-26 | 2011-09-15 | Showa Denko Kk | Forging die, method for manufacturing the same, and forging method |
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