JPS63201009A - Production of carbide - Google Patents
Production of carbideInfo
- Publication number
- JPS63201009A JPS63201009A JP62032560A JP3256087A JPS63201009A JP S63201009 A JPS63201009 A JP S63201009A JP 62032560 A JP62032560 A JP 62032560A JP 3256087 A JP3256087 A JP 3256087A JP S63201009 A JPS63201009 A JP S63201009A
- Authority
- JP
- Japan
- Prior art keywords
- carbon black
- powder
- carbide
- mixing
- black
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000000843 powder Substances 0.000 claims abstract description 30
- 239000006229 carbon black Substances 0.000 claims abstract description 24
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 8
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 8
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract 2
- 229910052715 tantalum Inorganic materials 0.000 claims abstract 2
- 229910052719 titanium Inorganic materials 0.000 claims abstract 2
- 229910052721 tungsten Inorganic materials 0.000 claims abstract 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 10
- 239000002184 metal Substances 0.000 abstract description 9
- 229910052751 metal Inorganic materials 0.000 abstract description 9
- 239000006231 channel black Substances 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 3
- 239000006232 furnace black Substances 0.000 abstract description 2
- 241000872198 Serjania polyphylla Species 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 235000019241 carbon black Nutrition 0.000 description 15
- 238000007796 conventional method Methods 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 150000001247 metal acetylides Chemical class 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000003763 carbonization Methods 0.000 description 3
- 238000010000 carbonizing Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 241000408495 Iton Species 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 2
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 2
- 239000006234 thermal black Substances 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- -1 furnace blank Chemical compound 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Inorganic materials O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
一本発明は超硬合金の主原料となるーＣ，ＭｏｚＣ，Ｔ
ｔＣ。[Detailed Description of the Invention] [Industrial Field of Application] The present invention is directed to C, MozC, and T, which are the main raw materials for cemented carbide.
tC.
ＴａＣ等の炭化物の製造方法に関する。This invention relates to a method for producing carbides such as TaC.
炭化物の製造方法としては従来、ＷＯ３，ＭＯＯ３＋Ｔ
ｉ０ｚ＋ＴａｚＯｓなどと、チャンネルブラック、ファ
ーネスブラック、サーマルブラック、アセチレンブラン
ク、天然黒鉛、人造黒鉛などのカーボンブラック（炭素
粉末）を混合して直接炭化する方法や、これらの酸化物
に水素還元を施し、金属粉末としたのち、それにカーボ
ンブラックを混合して炭化する方法などがある。Conventionally, methods for producing carbides include WO3, MOO3+T
There is a method of directly carbonizing i0z+TazOs, etc. by mixing carbon black (carbon powder) such as channel black, furnace black, thermal black, acetylene blank, natural graphite, and artificial graphite, and a method of directly carbonizing these oxides by hydrogen reduction. There are methods such as making it into a powder, then mixing it with carbon black and carbonizing it.
上記の従来の炭化物の製造方法に使用されるカーボンブ
ラックのうちチャンネルブラック、ファーネスブランク
、サーマルフ゛ラック及びアセチレンブランクのカーボ
ンブラックはストラクチャー即ち鎖状構造を有している
。このストラクチャーは上記した従来の炭化物の製造工
程のうちＮＯ，等との混合あるいは、それらの酸化物の
水素還元金属粉末との混合を行う際、乾式ボールミル又
はヘンシェルミキサーが用いられて破壊されるのである
が、不充分な破壊しか得られなかった。このストラクチ
ャーの破壊が不充分な場合には、高融点金属酸化物の金
属粉末との混合が均一になり難いという問題点があった
。Among the carbon blacks used in the above-mentioned conventional methods for producing carbides, the carbon blacks of channel black, furnace blank, thermal black and acetylene blank have a structure, that is, a chain structure. This structure is destroyed by using a dry ball mill or Henschel mixer when mixing with NO, etc. or mixing these oxides with hydrogen-reduced metal powder in the conventional carbide manufacturing process described above. Yes, but only insufficient destruction was achieved. If this structure is insufficiently destroyed, there is a problem in that it is difficult to uniformly mix the high melting point metal oxide with the metal powder.
従って本発明の目的はかかる問題点を解決するためにス
トラクチャーが十分に破壊されて金属粉末との均一な混
合が行われ、それを素材として得られる超硬合金の性能
を向上させることを目的とする。Therefore, the purpose of the present invention is to solve this problem by sufficiently destroying the structure and uniformly mixing it with the metal powder, thereby improving the performance of the cemented carbide obtained using the structure as a material. do.
本発明に係る炭化物の製造方法においては、前記のチャ
ンネルブラック等のストラクチャーを有するカーボンブ
ラックを予めボールミル等で粉砕し、ストラクチャーを
十分に破壊したものを金属酸化物又は金属粉末との混合
工程に供することを要旨とする。In the method for producing a carbide according to the present invention, carbon black having a structure such as the channel black described above is ground in advance using a ball mill or the like, and the structure is sufficiently destroyed, and the resulting material is subjected to a mixing step with a metal oxide or metal powder. The gist is that.
斯くして、カーボンブラックが金属粉末と均一に混合す
るようになるため炭化物の均粒化、微細化が得られる。In this way, the carbon black is uniformly mixed with the metal powder, so that the grains of the carbide can be made uniform and fine.
このカーボンブラックの破壊のメカニズムと炭化後の状
態を模式的に従来例として第１図に、本発明の例として
第２図に示した。The mechanism of destruction of carbon black and its state after carbonization are schematically shown in FIG. 1 as a conventional example and in FIG. 2 as an example of the present invention.
〔比較例１〕
ボールミルで４８時間粉砕した０、０４μｍのカーボン
ブラックを０．５μｍのＷ粉末に６．３重量％配合しボ
ールミルで４８時間混合した完粉と、粉砕しない０．０
４μｍカーボンブラックと０．５μ−Ｗ粉末をボールミ
ルで４８時間混合した完粉をＩＴｏｎ／ｃｒｌで型押し
、これらの圧粉体を、水素雰囲気中で１４００℃で加熱
して反応せしめその炭化物の特性を比較した。[Comparative Example 1] Finished powder in which 6.3% by weight of 0.04 μm carbon black ground in a ball mill for 48 hours was blended with 0.5 μm W powder and mixed in a ball mill for 48 hours, and 0.04 μm in size without being ground in a ball mill for 48 hours.
The finished powder obtained by mixing 4μm carbon black and 0.5μ-W powder in a ball mill for 48 hours was pressed with Iton/crl, and the compacted powder was heated at 1400℃ in a hydrogen atmosphere to cause a reaction, and the properties of the carbide were determined. compared.
以下余日
表−２得られた一Ｃ粉末の特性
表−１１表−２でみられるように見掛比重が高く生産性
が向上し、ＷＣ粉末粒庫が微細となり、本発明が従来の
方法より優れていることを示している。As shown in Table 2 below, the apparent specific gravity is high and the productivity is improved, and the WC powder granules become finer, and the present invention is different from the conventional method. It shows that it is better.
また本発明方法による炭化物と従来方法によるそれを用
いて表−３の組成の超硬合金を製造し、特性を比較した
。Further, cemented carbide having the composition shown in Table 3 was manufactured using the carbide produced by the method of the present invention and that produced by the conventional method, and the properties were compared.
その結果−１表−１の如（抗折力が高く、第３図。The results are shown in Table 1 (transverse rupture strength is high, Figure 3).
４図からも判る様に本発明による札は微細で均一な組織
であり、本発明の有効性が超硬合金でもその効果が大で
あることが明らかとなった。As can be seen from Figure 4, the tag according to the present invention has a fine and uniform structure, and it is clear that the effectiveness of the present invention is great even when using cemented carbide.
（比較例２〕
１．８μｍＷ粉末をボー°ルミルで４８時間粉砕した０
、０４μ車カーボンブラツクおよび粉砕しない０．０４
μ−カーボンブラックをボールミｌしで４８時間混合し
た完粉をＩ Ｔｏｎ／−で型押し、これらの圧粉体を水
素雰囲気中で１５００℃で反応せしめ、その炭化物の特
性を比較した。(Comparative Example 2) 1.8 μm W powder was ground in a ball mill for 48 hours.
, 04μ car carbon black and non-shatter 0.04
Complete powders prepared by mixing μ-carbon black in a ball mill for 48 hours were embossed with I Ton/-, and these green compacts were reacted at 1500° C. in a hydrogen atmosphere, and the properties of the carbides were compared.
表−７１０％Ｃｏ合金の特性
得られたＷＣ粉末の見掛密度は表−５から判る様に本発
明法が高く、ストラフチャ−（鎖状構造）の破壊による
均一混合が裏付けられている。Table 7 Characteristics of 10% Co Alloy The apparent density of the obtained WC powder is higher in the method of the present invention, as seen from Table 5, which confirms the uniform mixing due to the destruction of struttle (chain structure).
また本発明の方法による炭化物と従来方法によるそれを
用いて製造した１０ｏ／６Ｃｏ超硬合金の特性も本発明
によるＷＣ粉末からのものは従来法に比べ微細で均粒（
第５図、第６図）であり、硬度、強度（表−７）も高い
。In addition, the characteristics of the 10o/6Co cemented carbide manufactured using the carbide produced by the method of the present invention and the carbide produced by the conventional method are that those made from the WC powder of the present invention are finer and more uniformly grained (
5 and 6), and its hardness and strength (Table 7) are also high.
〔比較例３〕
ボールミルで４８時間粉砕した０、０４μｍのカーボン
ブラックを０．８μｍのＴｉＯ□粉末に３１．１重量％
配合しボールミルで４８時間混合した完粉と粉砕しない
０．０４μｍカーボンブラックと０．８μｌのＴｉＯ□
をボールミルで４８時間混合した完粉をＩＴｏｎ／ｃｊ
で型押し、これらの圧粉体を水素雰囲気中で２０００℃
で炭化し、その炭化物の特性を比較した。[Comparative Example 3] 0.04 μm carbon black ground for 48 hours in a ball mill was added to 0.8 μm TiO□ powder at 31.1% by weight.
Complete powder mixed in a ball mill for 48 hours, unmilled 0.04μm carbon black and 0.8μl TiO□
Iton/cj is the finished powder mixed in a ball mill for 48 hours.
These green compacts were stamped at 2000℃ in a hydrogen atmosphere.
The properties of the carbides were compared.
表−８から明らかの様に本発明によるＴｉＣ粉末は結合
炭素が高く十分炭化が進んでおり、その為酸素の含有量
も低い。得られたＴｉＣ粉末の粒度も微細である等々か
ら本発明はＴｉＣ粉末の製造においても確認された。As is clear from Table 8, the TiC powder according to the present invention has a high bonded carbon content and is sufficiently carbonized, and therefore has a low oxygen content. The present invention was also confirmed in the production of TiC powder, as the particle size of the obtained TiC powder was also fine.
本発明は以上の比較例からも明らかのように、炭化物の
製造方法においてストラクチャーを有するカーボンブラ
ックを予めそのストラクチャーを破壊して金属酸化物又
は金属粉末と混合するようにしたのでそれらとの混合が
均一に行われるようになり結果的にはそれを素材として
製造される超硬合金の性能が向上するという効果が得ら
れる。As is clear from the above comparative examples, in the method for producing carbide, the structure of carbon black having a structure is destroyed in advance and mixed with a metal oxide or metal powder, so that mixing with the metal oxide or metal powder is prevented. The process is performed uniformly, and as a result, the performance of the cemented carbide manufactured from the same material is improved.
第１図は従来の炭化物製造法によるカーボンブラックの
破壊のメカニズムと炭化後の状態を示す模式図、
第２図は本発明の炭化物製造法によるカーボンブラック
の破壊のメカニズムと炭化後の状態を示す模式図、
第３図は本発明による炭化物を用いて製造した超硬合金
の組織図、
第４図は従来法による第３図に対応する組織１ヌ第５図
は本発明による炭化物を用いて製造した１０％ＣＯ超硬
合金の組織図、
第６図は従来法による第５図に対応する組織１ヌである
。
代理人（７７８３）弁理士ン畠田憲保
手続補正書（方式）
昭和７２年９８７日Figure 1 is a schematic diagram showing the destruction mechanism of carbon black and the state after carbonization by the conventional carbide production method. Figure 2 shows the destruction mechanism of carbon black and the state after carbonization by the carbide production method of the present invention. Schematic diagram; Figure 3 is a microstructure diagram of a cemented carbide manufactured using the carbide according to the present invention; Figure 4 is a diagram showing the structure 1 corresponding to Figure 3 according to the conventional method; The structure diagram of the manufactured 10% CO cemented carbide, FIG. 6, is the structure 1 corresponding to FIG. 5 obtained by the conventional method. Agent (7783) Patent Attorney Noriho Hatada Procedural Amendment (Method) Date 987, 1987
Claims (1)
金属酸化物と、ストラクチャーを有するカーボンブラッ
クとを混合して水素雰囲気又は真空中で炭化物を製造す
る方法において、前記カーボンブラックを予めその有す
るストラクチャーを破壊して混合することを特徴とする
炭化物の製造方法。 ２、前記ストラクチャーの破壊がボールミルで行われる
ことを特徴とする特許請求の範囲第１項記載の炭化物の
製造方法。 ３、前記ストラクチャーの破壊がヘンシェルミキサーで
行われることを特徴とする特許請求の範囲第１項記載の
炭化物の製造方法。[Claims] 1. A method for producing a carbide in a hydrogen atmosphere or vacuum by mixing powders and metal oxides of W, Mo, Ti, Ta, etc. having a high melting point and carbon black having a structure. . A method for producing a carbide, characterized in that the carbon black is mixed by destroying its structure in advance. 2. The method for producing a carbide according to claim 1, wherein the structure is destroyed using a ball mill. 3. The method for producing a carbide according to claim 1, wherein the structure is destroyed using a Henschel mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62032560A JPS63201009A (en) | 1987-02-17 | 1987-02-17 | Production of carbide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62032560A JPS63201009A (en) | 1987-02-17 | 1987-02-17 | Production of carbide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63201009A true JPS63201009A (en) | 1988-08-19 |
Family
ID=12362293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62032560A Pending JPS63201009A (en) | 1987-02-17 | 1987-02-17 | Production of carbide |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63201009A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999015461A1 (en) * | 1997-09-24 | 1999-04-01 | The University Of Connecticut | Sinterable carbides from oxides using high energy milling |
| US7306411B2 (en) | 2002-09-03 | 2007-12-11 | Mitsubishi Materials Corporation | Drill with groove width variation along the drill and double margin with a thinning section at the tip |
| DE102007026214A1 (en) | 2007-06-05 | 2008-12-11 | Evonik Degussa Gmbh | lamp black |
| CN102050449A (en) * | 2010-05-31 | 2011-05-11 | 东阳市沃诺斯硬质合金有限公司 | Production method of nano TiC powdered material |
-
1987
- 1987-02-17 JP JP62032560A patent/JPS63201009A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999015461A1 (en) * | 1997-09-24 | 1999-04-01 | The University Of Connecticut | Sinterable carbides from oxides using high energy milling |
| US6214309B1 (en) * | 1997-09-24 | 2001-04-10 | University Of Connecticut | Sinterable carbides from oxides using high energy milling |
| US7306411B2 (en) | 2002-09-03 | 2007-12-11 | Mitsubishi Materials Corporation | Drill with groove width variation along the drill and double margin with a thinning section at the tip |
| DE102007026214A1 (en) | 2007-06-05 | 2008-12-11 | Evonik Degussa Gmbh | lamp black |
| WO2008148641A2 (en) | 2007-06-05 | 2008-12-11 | Evonik Degussa Gmbh | Lamp black |
| WO2008148641A3 (en) * | 2007-06-05 | 2009-03-12 | Evonik Degussa Gmbh | Lamp black |
| CN102050449A (en) * | 2010-05-31 | 2011-05-11 | 东阳市沃诺斯硬质合金有限公司 | Production method of nano TiC powdered material |
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