JPH0551555B2 - - Google Patents
Info
- Publication number
- JPH0551555B2 JPH0551555B2 JP60117828A JP11782885A JPH0551555B2 JP H0551555 B2 JPH0551555 B2 JP H0551555B2 JP 60117828 A JP60117828 A JP 60117828A JP 11782885 A JP11782885 A JP 11782885A JP H0551555 B2 JPH0551555 B2 JP H0551555B2
- Authority
- JP
- Japan
- Prior art keywords
- powder
- bulk
- silicon carbide
- sliding
- properties
- 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.)
- Expired - Lifetime
Links
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 25
- 239000000843 powder Substances 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 10
- 239000011230 binding agent Substances 0.000 claims description 8
- 239000000295 fuel oil Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 239000003575 carbonaceous material Substances 0.000 description 7
- 239000013078 crystal Substances 0.000 description 7
- 238000010304 firing Methods 0.000 description 7
- 238000005245 sintering Methods 0.000 description 7
- 239000000571 coke Substances 0.000 description 6
- 229910010271 silicon carbide Inorganic materials 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 239000011261 inert gas Substances 0.000 description 4
- 239000011295 pitch Substances 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 229910003481 amorphous carbon Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 238000004523 catalytic cracking Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011269 tar Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001639 boron compounds Chemical class 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011316 heat-treated pitch Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003027 oil sand Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 230000037081 physical activity Effects 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Ceramic Products (AREA)
- Sliding-Contact Bearings (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、軸受、メカニカルシールなどの摺動
部材に関し、さらに詳しくは、摺動特性にすぐれ
た摺動部材の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to sliding members such as bearings and mechanical seals, and more particularly to a method for manufacturing sliding members with excellent sliding characteristics.
一般に炭素質材料は自己潤滑性、耐食性、耐熱
性においてすぐれた特性を有することから、コー
クスもしくは黒鉛を主成分として、タール、ピツ
チなどの結合材（バインダー）を配合し、混練
し、成形し、焼成されたものが、軸受、メカニカ
ルシールなどの摺動部材として古くから利用され
ている。
In general, carbonaceous materials have excellent properties in terms of self-lubricating properties, corrosion resistance, and heat resistance. Therefore, carbonaceous materials are made of coke or graphite as the main component, mixed with a binder such as tar or pitch, kneaded, and molded. Sintered products have been used for a long time as sliding members such as bearings and mechanical seals.
ところが、最近、使用条件の苛酷化、用途の多
様化に伴い、耐摩耗性、および機械的強度の一層
向上した摺動部材が要求される様になつて来た。
この様な要求に応えるために種々の提案がなされ
ている。 However, in recent years, as usage conditions have become more severe and applications have become more diverse, there has been a demand for sliding members with further improved wear resistance and mechanical strength.
Various proposals have been made to meet such demands.
たとえば、○イ耐摩耗性の向上が図られた摺動部
材としては、従来、コークスもしくは黒鉛粉末に
炭化珪素ウイスカーあるいは窒化珪素ウイスカー
を添加もしくは混合し、さらにフエノール系樹脂
などのバインダーとともに混練、加圧成形した
後、加熱処理して得られる摺動部材（特開昭58−
172266号公報）がある。 For example, sliding members with improved wear resistance have conventionally been produced by adding or mixing silicon carbide whiskers or silicon nitride whiskers to coke or graphite powder, and then kneading and processing them with a binder such as a phenolic resin. Sliding member obtained by pressure forming and then heat treatment
172266).
また、○ロ機械的強度が向上した成形焼結体もし
くは成形複合材を製造する方法としては、従来、
コークス、カーボンブラツクなどの無定形の炭素
粉末に金属珪素および（または）炭化珪素粉末と
焼結助剤としての硼素化合物を添加混合し、加圧
下で加熱成形することにより成形焼結体を製造す
る方法（特公昭60−9980号公報）が知られてい
る。 In addition, as a method for producing shaped sintered bodies or shaped composite materials with improved mechanical strength,
A shaped sintered body is produced by adding and mixing metal silicon and/or silicon carbide powder and a boron compound as a sintering aid to amorphous carbon powder such as coke or carbon black, and heat forming the mixture under pressure. A method (Japanese Patent Publication No. 60-9980) is known.
上記○イの方法は、コークス、黒鉛などの炭素質
材料が具備する炭素質材料固有の自己潤滑性を損
わず、さらに炭化珪素ウイスカーなどを添加する
ことによつて、炭素質材料の欠点である耐摩耗性
を改善した点ですぐれている。しかしながら、機
械的強度の点では必ずしも満足のいくものではな
く、また、バインダーが摺動特性に悪影響をおよ
ぼすという問題もある。さらに製造工程におい
て、バインダーを用いて混練したのち、成形を行
なうなど、実際の製造にあたつて工程が複雑とな
り、経済的にも不利である。 The method of ○A above does not impair the inherent self-lubricating properties of carbonaceous materials such as coke and graphite, and also eliminates the drawbacks of carbonaceous materials by adding silicon carbide whiskers. It is superior in that it has improved wear resistance. However, the mechanical strength is not necessarily satisfactory, and there is also the problem that the binder adversely affects the sliding properties. Furthermore, in the manufacturing process, the actual manufacturing process is complicated, such as kneading with a binder and then molding, which is also economically disadvantageous.
また、上記○ロの方法は炭素系材料の機械的強度
の向上または改善された材料として優れていると
いえるが、しかしながら摺動部材としての摺動特
性の点では必ずしも満足のいくものではない。 Further, although the above method (○) and (b) can be said to be excellent in improving the mechanical strength of the carbon-based material or improving the material, it is not necessarily satisfactory in terms of sliding characteristics as a sliding member.
周知のように苛酷な条件下で用いる摺動部材
は、非常にすぐれた摺動特性すなわち耐摩耗性、
潤滑性があり、さらに緻密で機械的強度にすぐれ
ていることが必要である。 As is well known, sliding members used under harsh conditions have extremely excellent sliding properties, i.e. wear resistance,
It must have lubricity, be dense, and have excellent mechanical strength.
一般に、炭素質材料は、その結晶構造の特徴
からＣ軸方向の結合力が弱いため結晶の六角網面
のすべりによつて自己潤滑性が与えられるが、高
度に配向した結晶構造を有する程、その性能はす
ぐれている。したがつて高度に配向した結晶構造
を有する程、すぐれた摺動特性が発揮されること
になる。また、緻密化の点では、自己焼結性に
すぐれている程、高密度の焼結体が得られやす
く、機械的強度の向上にもつながる。したがつ
て、苛酷な条件下で使用される摺動部材としては
上記およびの特性の双方を有することが肝要
である。 In general, carbonaceous materials have a weak bonding force in the C-axis direction due to the characteristics of their crystal structure, so they are given self-lubricating properties by the sliding of the hexagonal network planes of the crystal, but the more highly oriented the crystal structure is, the more Its performance is excellent. Therefore, the more highly oriented the crystal structure is, the better the sliding properties will be exhibited. In addition, in terms of densification, the better the self-sintering property, the easier it is to obtain a high-density sintered body, which also leads to improved mechanical strength. Therefore, it is important for a sliding member to be used under severe conditions to have both of the above characteristics.
しかしながら、前記○ロで製造された焼結体は機
械的強度の改善された材料ではあるが、結晶構造
が発達していないコークス、カーボンブラツクな
どの無定形の炭素粉末を基材としているため、こ
の焼結体を摺動部材として使用した場合、苛酷な
条件下で必要とされるすぐれた摺動特性が望めな
い。また、製造工程においても、自己焼結性を有
しないコークスやカーボンブラツク粉末と難焼結
性である炭化珪素粉末とを原料基材とした場合、
焼結助剤が必要になるとともに加圧下で加熱焼結
させる必要があることから、製造コストの増大、
製造工程の複雑化につながるだけでなく、さらに
大形の製品化が困難になるなどの問題が生じ、技
術的、経済的に不利がある。 However, although the sintered body manufactured in the above-mentioned method B is a material with improved mechanical strength, it is based on amorphous carbon powder such as coke or carbon black that does not have a developed crystal structure. When this sintered body is used as a sliding member, the excellent sliding properties required under severe conditions cannot be expected. In addition, in the manufacturing process, when coke or carbon black powder, which does not have self-sintering properties, and silicon carbide powder, which is difficult to sinter, are used as raw material bases,
As a sintering aid is required and heating sintering under pressure is required, manufacturing costs increase.
This not only complicates the manufacturing process, but also causes problems such as making it difficult to produce larger products, which is technically and economically disadvantageous.
本発明は上述した点に鑑みてなされたものであ
り、摺動特性すなわち耐摩耗性、潤滑性にすぐれ
るとともに緻密かつ機械的強度の向上した摺動部
材を得る方法を提供すること、を目的とする。
The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a method for obtaining a sliding member that has excellent sliding properties, that is, wear resistance and lubricity, is dense, and has improved mechanical strength. shall be.
本発明者らは、重質油を熱処理して得られるバ
ルクメソフエースが、自己焼結性にすぐれるとと
もに高度に配向した結晶構造を有し自己潤滑性の
点でもすぐれた特性を有していること、さらに炭
化珪素は、難焼結性であるが耐熱性、耐摩耗性に
すぐれているという特性に着目し、これら双方の
特性を兼ね備えた摺動部材を得る方法について鋭
意研究した結果、バルクメソフエース粉末と炭化
珪素粉末とを効果的に混合・焼成することによつ
てこれらの材料が有するすぐれた特性を相乗的に
発揮させて、極めてすぐれた摺動特性を有する摺
動部材が得られることを見出した。 The present inventors have discovered that bulk mesophase obtained by heat-treating heavy oil has excellent self-sintering properties, a highly oriented crystal structure, and excellent self-lubricating properties. In addition, we focused on the characteristics of silicon carbide, which is difficult to sinter, but has excellent heat resistance and wear resistance, and as a result of intensive research into ways to obtain sliding members that have both of these characteristics. By effectively mixing and firing bulk mesophace powder and silicon carbide powder, the excellent properties of these materials are synergistically exhibited, resulting in a sliding member with extremely excellent sliding properties. I found out that it can be done.
本発明は、上記知見に基づいてなされたもので
ある。すなわち、本発明に係る摺動部材の製造方
法は、重質油を熱処理することによつて得られる
バルクメソフエースの粉末と炭化珪素粉末とを混
合し、この混合物をバインダーを用いないで成形
し、次いで焼成することを特徴とする。 The present invention has been made based on the above findings. That is, the method for manufacturing a sliding member according to the present invention involves mixing bulk mesophase powder obtained by heat-treating heavy oil with silicon carbide powder, and molding this mixture without using a binder. , followed by firing.
以下、本発明をさらに詳細に説明する。 The present invention will be explained in more detail below.
本発明に用いるバルクメソフエースとは、石油
の常圧残油、減圧残油、接触分解のデカントオイ
ル、熱分解タールなど石油系重質油、石炭ター
ル、オイルサンド油などの炭化水素重質油を400
〜500℃の温度に加熱処理した際に熱処理ピツチ
中に生成するメソフエース小球体を凝集合体させ
て母相ピツチから分離したものを意味し、化学
的、物理的な活性に富む物質である。 The bulk mesophase used in the present invention refers to petroleum-based heavy oils such as petroleum atmospheric residual oil, vacuum residual oil, catalytic cracking decant oil, pyrolysis tar, and hydrocarbon heavy oils such as coal tar and oil sand oil. 400
Mesophase is a substance that is separated from the matrix pitch by agglomerating the mesophase spherules that are formed in the heat-treated pitch when heat-treated to a temperature of ~500°C, and is a substance that is rich in chemical and physical activity.
このようなバルクメソフエースの製造方法につ
いては本出願人に係る特開昭57−200213号公報ま
たは特開昭59−30887号公報等に開示されており、
重質油を400〜500℃の温度に加熱し重縮合反応を
行なわせてメソフエース小球体を含有するピツチ
を得たのち、該ピツチを250〜400℃に冷却し、乱
流を付与することによりメソフエース小球体を凝
集合体させ、これを母相から分離することにより
バルクメソフエースが得られる。なお、このよう
なバルクメソフエースを製造するための装置は、
本出願人に係る特開昭59−30887号公報に開示さ
れている。 A method for producing such a bulk mesophase is disclosed in Japanese Patent Application Laid-Open No. 57-200213 or Japanese Patent Application Laid-Open No. 30887-1989, etc., filed by the present applicant.
By heating heavy oil to a temperature of 400 to 500°C to perform a polycondensation reaction to obtain a pitch containing mesophase spherules, the pitch is cooled to 250 to 400°C and turbulence is imparted. Bulk mesophase is obtained by agglomerating mesophase spherules and separating them from the parent phase. The equipment for manufacturing such bulk mesophace is
This is disclosed in Japanese Patent Application Laid-Open No. 59-30887 filed by the present applicant.
このようにして製造されたバルクメソフエース
は、軽度の加熱処理を施して用いてもよく、加熱
処理を施さないで用いてもよいが、成形直前の粒
径が約10μ以細であることが好ましい。 The bulk mesophase produced in this way may be used after being subjected to a mild heat treatment, or may be used without being subjected to a heat treatment, but it is important that the particle size immediately before molding is approximately 10 μm or less. preferable.
炭化珪素粉末はベーター形でもアルフアー形で
もよく一般市販品のものを入手して用いることが
出来るが、粒径は約10μ以細が好ましい。 The silicon carbide powder may be of beta type or alpha type, and commercially available products can be obtained and used, but the particle size is preferably about 10 μm or smaller.
次いで上記バルクメソフエース粉末と炭化珪素
粉末とをバインダーを用いないで混合し、成形
し、焼成を行なうが、バルクメソフエース粉末に
対する炭化珪素粉末の混合割合が少なくてもまた
多くても、さらに焼成温度が低すぎてもまた高す
ぎても、すぐれた摺動特性を得るには到らない。 Next, the above-mentioned bulk mesophace powder and silicon carbide powder are mixed without using a binder, molded, and fired. If the temperature is too low or too high, excellent sliding properties cannot be obtained.
すなわち、本発明の方法においては、バルクメ
ソフエース粉末に対する炭化珪素粉末の混合割合
ならびに焼成温度を経験的に求められる最終条件
に設定して、混合、焼成を行なうことが肝要であ
る。 That is, in the method of the present invention, it is important to set the mixing ratio of the silicon carbide powder to the bulk mesophace powder and the firing temperature to the final conditions determined empirically, and then perform the mixing and firing.
バルクメソフエース粉末に対する炭化珪素粉末
の混合割合は、バルクメソフエース粉末の炭素原
子と水素原子の原子比によつても異なるが、炭化
珪素の含有量が、10〜70重量％の範囲内であるこ
とが好ましい。 The mixing ratio of silicon carbide powder to bulk mesophase powder varies depending on the atomic ratio of carbon atoms to hydrogen atoms in bulk mesophase powder, but the content of silicon carbide is within the range of 10 to 70% by weight. It is preferable.
たとえば、バルクメソフエースの炭素原子と水
素原子の原子比がＣ／Ｈが約2.18の場合は、炭化
珪素の含有量は、55〜65重量％が好ましく、焼成
温度は、2000℃〜2200℃の範囲が好ましい。ま
た、原子比Ｃ／Ｈが、約2.31の場合は、炭化珪素
の含有量は、45〜55重量％が好ましく、焼成温度
は、1800℃〜2000℃の範囲が好ましい。さらにま
た、原子比Ｃ／Ｈが、約2.37の場合にあつては、
炭化珪素の含有量は、25〜35重量％が好ましく、
焼成温度は、1900℃〜2100℃の範囲が好ましい。 For example, when the atomic ratio of carbon atoms to hydrogen atoms in the bulk mesophase is C/H of about 2.18, the silicon carbide content is preferably 55 to 65% by weight, and the calcination temperature is 2000°C to 2200°C. A range is preferred. Further, when the atomic ratio C/H is about 2.31, the content of silicon carbide is preferably 45 to 55% by weight, and the firing temperature is preferably in the range of 1800°C to 2000°C. Furthermore, when the atomic ratio C/H is about 2.37,
The content of silicon carbide is preferably 25 to 35% by weight,
The firing temperature is preferably in the range of 1900°C to 2100°C.
バルクメソフエース粉末と炭化珪素粉末の混合
方法は、バルクメソフエースをあらかじめジエツ
トミル又は振動ボールミルなどの粉砕機により約
10μ以細に粉砕したのち、振動ボールミル、ライ
カイ機、などの混合機により混合物するか、ある
いは、粗粉砕（約60メツシユ以下）したバルクメ
ソフエース粗粒粉末と炭化珪素粉末を軽度に加
熱・混合処理したのち、この混合物を約10μ以細
に粉砕して用いてもよい。この場合、バルクメソ
フエース粉末と炭化珪素粉末をむらなく均一に混
合することが重要である。 The method for mixing bulk mesophace powder and silicon carbide powder is to crush bulk mesophyce powder in advance using a crusher such as a jet mill or a vibrating ball mill.
After pulverizing to 10 μm or finer, mix it with a mixer such as a vibrating ball mill or raikai machine, or lightly heat and mix coarsely pulverized (approximately 60 mesh or less) bulk mesophace coarse powder and silicon carbide powder. After the treatment, this mixture may be pulverized into particles of about 10 μm or smaller for use. In this case, it is important to mix the bulk mesophace powder and the silicon carbide powder evenly and uniformly.
混合物は、モールド成形、CIP成形などの周知
の方法によつて、所望の大きさ、形状に成形する
ことが出来る。成形物は常法によつて焼成される
が、焼成温度は、前述したように、バルクメソフ
エース粉末と炭化珪素粉末の混合割合およびバル
クメソフエース粉末の炭素元素と水素元素の原子
比によつても異なり、1800〜2200℃の温度範囲内
で最適値が選ばれる。 The mixture can be molded into a desired size and shape by well-known methods such as molding and CIP molding. The molded product is fired by a conventional method, and the firing temperature depends on the mixing ratio of bulk mesophase powder and silicon carbide powder and the atomic ratio of carbon element and hydrogen element in bulk mesophase powder. The optimum value is selected within the temperature range of 1800 to 2200℃.
このようにして得られた本発明の摺動部材は、
高品質炭素摺動部材に比べ、1/5〜1/6の摩耗量お
よび２〜３倍の曲げ強度を有するとともにすぐれ
た摺動特性を有するものである。 The sliding member of the present invention thus obtained is
Compared to high-quality carbon sliding members, it has 1/5 to 1/6 the amount of wear and 2 to 3 times the bending strength, and has excellent sliding properties.
実施例 １
石油の接触分解油から得たバルクメソフエース
を、熱処理を施すことなくジエツトミルで粉砕
し、Ｃ／H2.18、平均粒度3.0μのバルクメソフエ
ース粉末を調整した。
Example 1 Bulk mesophase obtained from petroleum catalytic cracking oil was pulverized in a jet mill without heat treatment to prepare bulk mesophase powder with a C/H of 2.18 and an average particle size of 3.0μ.
このバルクメソフエース粉末を40部とイビデン
（社）製、平均粒径0.3μのベーター形炭化珪素粉
末60部とをライカイ機を用いて均一に混合し、こ
の混合物50ｇをCIP成形して、径30mm、高さ30mm
の成形体を得た。 40 parts of this bulk mesophace powder and 60 parts of beta-type silicon carbide powder manufactured by Ibiden Co., Ltd. with an average particle size of 0.3μ were mixed uniformly using a Laikai machine, and 50g of this mixture was CIP-molded and 30mm, height 30mm
A molded body was obtained.
次いで得られた成形体を不活性ガス雰囲気中、
2100℃で焼成し、かさ密度1.92ｇ／cm3、曲げ強度
1000Kg／cm2の摺動部材(A)を試作した。 Next, the obtained molded body was placed in an inert gas atmosphere.
Sintered at 2100℃, bulk density 1.92g/cm 3 , bending strength
A 1000Kg/cm 2 sliding member (A) was prototyped.
実施例 ２
実施例−１で用いたバルクメソフエースを熱処
理してＣ／Ｈ比2.31のバルクメソフエースを得た
のち、実施例−１と同様に調整した平均粒径3.0μ
のバルクメソフエース粉末50部と実施例−１で用
いた炭化珪素粉末50部を実施例−１と同様に混
合・成形して成形体を得た。Example 2 The bulk mesophase used in Example-1 was heat-treated to obtain bulk mesophase with a C/H ratio of 2.31, and then the average particle size was adjusted in the same manner as in Example-1 to 3.0μ.
50 parts of the bulk mesophace powder and 50 parts of the silicon carbide powder used in Example-1 were mixed and molded in the same manner as in Example-1 to obtain a molded body.
次いで得られた成形体を不活性ガス雰囲気中、
1900℃で焼成し、かさ密度2.0ｇ／cm3、曲げ強度
1420Kg／cm2の摺動部材(B)を試作した。 Next, the obtained molded body was placed in an inert gas atmosphere.
Sintered at 1900℃, bulk density 2.0g/cm 3 , bending strength
A sliding member (B) weighing 1420Kg/cm 2 was prototyped.
実施例 ３
実施例−２と同様に熱処理・調整したＣ／Ｈ比
2.37、平均粒径3.0μのバルクメソフエース粉末70
部と実施例−１で用いた炭化珪素粉末30部を実施
例−１と同様に混合・成形して成形体を得た。Example 3 C/H ratio heat treated and adjusted in the same manner as Example-2
2.37, bulk mesophace powder 70 with average particle size 3.0μ
and 30 parts of the silicon carbide powder used in Example-1 were mixed and molded in the same manner as in Example-1 to obtain a molded body.
次いで得られた成形体を不活性ガス雰囲気中、
2000℃で焼成し、かさ密度2.02ｇ／cm3、曲げ強度
1140Kg／cm2の摺動部材(C)を試作した。 Next, the obtained molded body was placed in an inert gas atmosphere.
Sintered at 2000℃, bulk density 2.02g/cm 3 , bending strength
We prototyped a sliding member (C) weighing 1140Kg/cm 2 .
実施例 ４
実施例−１で用いたバルクメソフエースを熱処
理を施すことなく60メツシユ以下に粗粉砕したバ
ルクメソフエース粗粒粉末と、実施例−１で用い
た炭化珪素粉末とを加熱・混合処理し、この加
熱・混合処理によつて、バルクメソフエースの
Ｃ／Ｈ比2.35、バルクメソフエースと炭化珪素と
の混合比70／30部の混合物を調製した。この混合
物をジエツトミルで平均粒径3.0μに粉砕し、実施
例−１と同様にCIP成形して成形体を得た。Example 4 Bulk mesophase coarse powder obtained by coarsely pulverizing the bulk mesophase used in Example-1 to 60 mesh or less without heat treatment and the silicon carbide powder used in Example-1 were heated and mixed. By this heating and mixing treatment, a mixture of bulk mesophace with a C/H ratio of 2.35 and a mixing ratio of bulk mesophace and silicon carbide of 70/30 parts was prepared. This mixture was pulverized with a jet mill to an average particle size of 3.0 μm, and CIP molded in the same manner as in Example-1 to obtain a molded product.
次いで得られた成形体を不活性ガス雰囲気中、
2000℃で焼成し、かさ密度2.05ｇ／cm3、曲げ強度
1150Kg／cm2の摺動部材(D)を試作した。 Next, the obtained molded body was placed in an inert gas atmosphere.
Sintered at 2000℃, bulk density 2.05g/cm 3 , bending strength
We prototyped a sliding member (D) weighing 1150Kg/cm 2 .
摺動試験例
実施例１〜３で試作した(A)、(B)、(C)の各摺動部
材について、摺動試験機を用いて、摺動試験を行
なつた結果、いづれにおいも、その摩耗量は高品
位炭素材料に比べ1/5〜1/6であり、かつ非常にす
ぐれた摺動特性が認められた。 Sliding test example As a result of conducting a sliding test using a sliding testing machine for each of the sliding members (A), (B), and (C) prototyped in Examples 1 to 3, no odor was detected. The amount of wear was 1/5 to 1/6 that of high-grade carbon materials, and extremely excellent sliding properties were observed.
本発明によれば、自己焼結性に優れるととも
に、さらに高度に配向した結晶構造を有し自己潤
滑性にすぐれたバルクメソフエースを原料として
用いているため、バインダーを用いることなく、
摺動特性すなわち耐摩耗性にすぐれるとともに緻
密かつ機械的強度の向上した摺動部材が得られ
る。
According to the present invention, bulk mesophase, which has excellent self-sintering properties, has a highly oriented crystal structure, and has excellent self-lubricating properties is used as a raw material, and therefore, without using a binder,
A sliding member that has excellent sliding properties, that is, wear resistance, is dense, and has improved mechanical strength can be obtained.
Claims (1)
ルクメソフエースの粉末と炭化珪素粉末とを混合
し、この混合物をバインダーを用いないで成形
し、次いで焼成することを特徴とする、摺動部材
の製造方法。1. A sliding member characterized in that bulk mesophace powder obtained by heat treating heavy oil and silicon carbide powder are mixed, this mixture is molded without using a binder, and then fired. manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60117828A JPS61275166A (en) | 1985-05-31 | 1985-05-31 | Manufacture of sliding member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60117828A JPS61275166A (en) | 1985-05-31 | 1985-05-31 | Manufacture of sliding member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61275166A JPS61275166A (en) | 1986-12-05 |
| JPH0551555B2 true JPH0551555B2 (en) | 1993-08-02 |
Family
ID=14721248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60117828A Granted JPS61275166A (en) | 1985-05-31 | 1985-05-31 | Manufacture of sliding member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61275166A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2543293Y2 (en) * | 1989-03-17 | 1997-08-06 | 富士通株式会社 | Diaphragm pump |
-
1985
- 1985-05-31 JP JP60117828A patent/JPS61275166A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61275166A (en) | 1986-12-05 |
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