JP2001289226A - Screw made of carbon fiber reinforced carbon composite material - Google Patents
Screw made of carbon fiber reinforced carbon composite materialInfo
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- JP2001289226A JP2001289226A JP2000199229A JP2000199229A JP2001289226A JP 2001289226 A JP2001289226 A JP 2001289226A JP 2000199229 A JP2000199229 A JP 2000199229A JP 2000199229 A JP2000199229 A JP 2000199229A JP 2001289226 A JP2001289226 A JP 2001289226A
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- screw
- carbon
- carbon fiber
- composite material
- fiber reinforced
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、２Ｄの炭素繊維強
化炭素複合材料（以下、「Ｃ／Ｃ材」という。）からな
るネジに関し、特に、熱処理炉やＣＺ炉等の構造材とし
て使用されるＣ／Ｃ材製ネジに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw made of a 2D carbon fiber reinforced carbon composite material (hereinafter referred to as "C / C material"), and is particularly used as a structural material for heat treatment furnaces and CZ furnaces. C / C screws.
【０００２】[0002]
【従来の技術】従来より、熱処理炉やＣＺ炉等の高温構
造体の各構成部品を締結する締結部材として、黒鉛材よ
りも引張強度等の機械的特性に優れる２ＤのＣ／Ｃ材製
のネジが使用されている。2. Description of the Related Art Conventionally, as a fastening member for fastening each component of a high-temperature structure such as a heat treatment furnace or a CZ furnace, a 2D C / C material which is superior in mechanical properties such as tensile strength to graphite material is used. Screws are used.
【０００３】近年、熱処理炉やＣＺ炉は大型化の傾向に
あり、これに伴って各構成部品の重量も大きくなり、そ
のため、各構成部品の締結に用いられるネジにも高負荷
荷重が作用するようになり、これまで以上に各構成部品
を締結するネジに高強度のものが要求されるようになっ
ている。[0003] In recent years, heat treatment furnaces and CZ furnaces have been increasing in size, and accordingly, the weight of each component has also increased. Therefore, a high load is applied to the screws used for fastening each component. As a result, screws that fasten each component are required to have higher strength than ever before.
【０００４】[0004]
【発明が解決しようする課題】ところが、従来の多くの
Ｃ／Ｃ材製のネジは、例えば、実開昭６３−４９０１３
号公報に記載されているように、２Ｄの炭素繊維積層体
からなるＣ／Ｃ材を、切削加工により切り出して製作さ
れている。このため、切削加工時に、Ｃ／Ｃ材製作時に
含浸等により各炭素繊維同士を結合させ、また、Ｃ／Ｃ
材の密度を高めている炭素質のマトッリクス部分も同時
に切削されるため、各炭素繊維間の結合力が低下し、Ｃ
／Ｃ材全体として層間強度が低下して、炉の各構成部品
を締結するネジとして十分な強度とすることが困難であ
った。また、ネジ部表面は、炭素繊維が剥き出しになる
部分ができ、切削加工後のネジ部は、炭素繊維のほつれ
等で、毛羽立つことがあり、これらほつれた炭素繊維に
よって、スムーズな締結が困難になることもあった。However, many conventional screws made of C / C material are disclosed in, for example, Japanese Utility Model Laid-Open No. 63-49013.
As described in Japanese Patent Application Laid-Open Publication No. H10-264, a C / C material composed of a 2D carbon fiber laminate is cut out and manufactured. For this reason, at the time of cutting, each carbon fiber is bonded to each other by impregnation or the like at the time of manufacturing the C / C material.
Since the carbonaceous matrix portion, which increases the density of the material, is also cut at the same time, the bonding force between the carbon fibers decreases, and C
The interlayer strength of the entire / C material was reduced, and it was difficult to make the strength sufficient as a screw for fastening each component of the furnace. In addition, the surface of the threaded portion has a portion where the carbon fiber is exposed, and the threaded portion after cutting may be fuzzy due to fraying of the carbon fiber, etc., and smooth fastening is difficult due to the frayed carbon fiber. Sometimes it was.
【０００５】そこで、本発明は、熱処理炉やＣＺ炉等の
各構成部品の締結に用いられるネジとして十分な強度を
有し、かつ、各構成部品をスムーズに締結することがで
きる２ＤのＣ／Ｃ材製ネジを提供することを目的とす
る。[0005] Therefore, the present invention provides a 2D C / C screw which has sufficient strength as a screw used for fastening various components such as a heat treatment furnace and a CZ furnace, and can smoothly fasten each component. An object of the present invention is to provide a screw made of C material.
【０００６】[0006]
【課題を解決するための手段】前記課題を解決するため
の本発明のＣ／Ｃ材製ネジは、２Ｄの炭素繊維強化炭素
複合材料からなるネジであって、前記炭素繊維がスパン
ヤーンの平織クロスであるものである。また、２Ｄの炭
素繊維強化炭素複合材料からなるネジであって、前記炭
素繊維がフィラメントの平織クロスであるものである。
そして、前記ネジのネジ部にガラス状炭素が含浸又は／
及び被覆、若しくは、熱分解炭素が含浸又は／及び被覆
がされたものであることが好ましい。さらに、高純度化
処理され、灰分量で１０ｐｐｍ以下であるものが好まし
い。A C / C screw according to the present invention for solving the above-mentioned problems is a screw made of a 2D carbon fiber reinforced carbon composite material, wherein the carbon fiber is a plain woven cloth of spun yarn. It is something that is. Also, the screw is made of a 2D carbon fiber reinforced carbon composite material, wherein the carbon fiber is a plain woven cloth of filaments.
And, the vitreous carbon is impregnated into the screw portion of the screw or /
And / or coated with pyrolytic carbon. Further, those which are subjected to high purification treatment and have an ash content of 10 ppm or less are preferable.
【０００７】本発明における２ＤのＣ／Ｃ材からなるネ
ジは、通常行われている方法で製作された２ＤのＣ／Ｃ
材を使用することができる。[0007] The screw made of a 2D C / C material in the present invention is a 2D C / C material manufactured by a commonly used method.
Materials can be used.
【０００８】２ＤのＣ／Ｃ材は、炭素繊維が一方向に配
列したシートを炭素繊維の方向が直交するようにシート
を交互に積層するか、炭素繊維による経糸、緯糸からな
る織物状の炭素繊維シートを積層したものに、ピッチや
樹脂を含浸させて、焼成し、板状のＣ／Ｃ材としたもの
である。[0008] The 2D C / C material is prepared by laminating sheets in which carbon fibers are arranged in one direction alternately so that the directions of carbon fibers are orthogonal to each other, or woven carbon fibers made of warps and wefts of carbon fibers. A laminate of fiber sheets is impregnated with a pitch or a resin and fired to obtain a plate-like C / C material.
【０００９】この際に、炭素繊維として、目の細かいス
パンヤーンの平織クロス若しくは、目の荒い３Ｋ〜１２
Ｋ、好ましくは６Ｋ〜１２Ｋのフィラメントの平織クロ
スを用いることができる。目の細かいスパンヤーンの平
織クロスを用いることで、切削加工により呼び径が小さ
く、ピッチの小さいネジを切り出した場合でも、ネジ部
の炭素繊維のほつれを少なくすることができる。一方、
目の荒い３Ｋ〜１２Ｋ、好ましくは６Ｋ〜１２Ｋのフィ
ラメントの平織クロスを用い、呼び径が小さく、ピッチ
が小さく、さらにネジ山の小さいネジを切り出した場
合、ネジ部の炭素繊維のほつれが多くなるとともに、層
間剥離が発生しやすくなる。また、ネジ山加工後に、ネ
ジ山に欠け等が発生することがある。この欠け等は、ネ
ジ山加工により炭素繊維間の結合力が最も低下する炭素
繊維の積層方向に直交する上下２面に良く発生するた
め、予め、これら上下２面を機械加工により除去してお
くことが好ましい。[0009] At this time, as the carbon fiber, a plain woven cloth of fine spun yarn or 3K to 12
A plain weave cloth of K, preferably 6K to 12K filaments can be used. By using a plain woven cloth of fine spun yarn, even if a screw having a small nominal diameter and a small pitch is cut out by cutting, it is possible to reduce fraying of the carbon fiber in the screw portion. on the other hand,
Using a plain woven cloth of filaments of 3K to 12K, preferably 6K to 12K, with a small nominal diameter, a small pitch, and a screw with a small screw thread, the carbon fiber of the thread part will be more frayed. At the same time, delamination tends to occur. Further, after the thread is formed, the thread may be chipped. Since this chipping or the like often occurs on the upper and lower surfaces orthogonal to the laminating direction of the carbon fibers where the bonding force between the carbon fibers is most reduced by the thread processing, these upper and lower two surfaces are previously removed by machining. Is preferred.
【００１０】また、あまりネジ山に負荷がかからなく、
呼び径が小さく、ピッチの小さなネジが必要な場合、例
えば、三角ネジであるＭ２０（メートルネジ、呼び径２
０ｍｍ）以下のネジを製作する場合には、目の細かいス
パンヤーンの平織クロスからなるＣ／Ｃ材を用いること
が好ましい。また、逆に、ネジ山に大きな負荷がかか
り、呼び径が大きく、ピッチが比較的大きなネジが必要
な場合、例えば、呼び径が２０ｍｍ以上の、台形ネジ
や、角ネジ、のこ歯ネジを製作する場合には、目の荒い
３Ｋ〜１２Ｋ、好ましくは６Ｋ〜１２Ｋのフィラメント
の平織クロスからなるＣ／Ｃ材を用いることが好まし
い。もちろん、目の細かいスパンヤーンの平織クロスを
用いて、製作することもできる。このように、製作した
いネジの呼び径、ピッチ等にあわせて、２Ｄ−Ｃ／Ｃ材
を構成する炭素繊維を選択することで、各構成部品の締
結条件に合わせたネジ形状にすることができる。[0010] Also, the load is not so much applied to the thread,
When a screw with a small nominal diameter and a small pitch is required, for example, M20 (metric screw, nominal diameter 2
In the case of manufacturing a screw of 0 mm or less, it is preferable to use a C / C material made of a plain woven cloth of fine spun yarn. Conversely, when a large load is applied to the screw thread and a screw with a large nominal diameter and a relatively large pitch is required, for example, a trapezoidal screw with a nominal diameter of 20 mm or more, a square screw, or a saw tooth screw is used. In the case of manufacturing, it is preferable to use a C / C material composed of plain woven cloth of coarse filaments of 3K to 12K, preferably 6K to 12K. Of course, it can also be manufactured using a plain woven cloth of fine spun yarn. As described above, by selecting the carbon fibers constituting the 2D-C / C material in accordance with the nominal diameter, pitch, and the like of the screw to be manufactured, the screw shape can be adjusted to the fastening conditions of each component. .
【００１１】ネジ山加工後は、１８００〜２２００℃の
範囲で５〜３０時間、ハロゲンガス雰囲気下で高純度処
理することが好ましい。これによって、灰分量を１０ｐ
ｐｍ以下、好ましくは５ｐｐｍ以下とすることができ、
ＣＺ炉の各構成部品を締結するネジとして使用すること
が可能となる。After the thread processing, it is preferable to perform high-purity treatment in a halogen gas atmosphere at a temperature of 1800 to 2200 ° C. for 5 to 30 hours. As a result, the ash content is reduced to 10 p.
pm or less, preferably 5 ppm or less,
It can be used as a screw for fastening each component of the CZ furnace.
【００１２】ここで、ハロゲンガスとは、ハロゲンまた
はその化合物のガスのことであり、例えば塩素や塩素化
合物、フッ素、フッ素化合物を用いることができると共
に、塩素とフッ素とを同一分子内に含む化合物（モノク
ロロトリフルオルメタン、トリクロロモノフルオルメタ
ン、ジクロルフルオルエタン、トリクロロモノフルオル
エタン等）を用いることができる。Here, the halogen gas is a gas of halogen or a compound thereof, for example, chlorine, a chlorine compound, fluorine, a fluorine compound, and a compound containing chlorine and fluorine in the same molecule. (Monochlorotrifluoromethane, trichloromonofluoromethane, dichlorofluoroethane, trichloromonofluoroethane, etc.) can be used.
【００１３】高純度処理後、少なくともネジ部にガラス
状炭素を含浸又は被覆のいずれか一方若しくは両方、若
しくは熱分解炭素を含浸又は被覆のいずれか一方若しく
は両方をする。これによって、ネジ部の加工によって、
低下した各炭素繊維同士の結合力を高めるとともに、ネ
ジ部表面を滑らかにすることができる。また、ガラス状
炭素を含浸被覆した後に、高純度化処理を行うこともで
きる。After the high-purity treatment, at least one of the screw portions is impregnated or coated with glassy carbon, or is impregnated with pyrolytic carbon or coated with one or both. By this, by the processing of the screw part,
It is possible to increase the bonding strength between the reduced carbon fibers and to smooth the surface of the screw portion. Further, after the glassy carbon is impregnated and coated, a high-purification treatment can be performed.
【００１４】ガラス状炭素の含浸、被覆は、フェノール
（レゾール、ノボラック）、フラン、ポリイミド、ポリ
アミドイミド、ポリエーテルイミド、ポリカルボジイミ
ド、ビスアリルナジイミド等の樹脂群から選ばれた１つ
または特性を損なわない範囲で組み合わせた樹脂中に、
浸漬若しくは浸漬後、これらの樹脂を加圧して含浸する
等任意の方法で行うことができる。次いで、刷毛等の任
意の方法で同様の樹脂を塗布等することで被覆すること
ができる。もちろん、表面にこれら樹脂を塗布等により
被覆するだけであってもよい。樹脂を含浸若しくは塗布
したのち、１００〜４００℃で熱処理を行い、樹脂を硬
化し、硬化後、７００〜１２００℃で焼成し、樹脂を炭
化させて、ガラス状炭素を含浸、被覆することができ
る。その後、さらに、１８００〜２２００℃で熱処理を
行ってもよい。The impregnation and coating of the glassy carbon may be performed by using one or a property selected from the group consisting of resins such as phenol (resole, novolak), furan, polyimide, polyamideimide, polyetherimide, polycarbodiimide, and bisallylnadiimide. In the resin combined within the range that does not impair,
After immersion or immersion, these methods can be performed by any method such as impregnation by pressurizing these resins. Next, the resin can be coated by applying the same resin or the like by an arbitrary method such as a brush. Of course, the surface may be simply coated with these resins by coating or the like. After impregnating or applying the resin, heat treatment is performed at 100 to 400 ° C., the resin is cured, and after curing, baked at 700 to 1200 ° C. to carbonize the resin and impregnate and coat the glassy carbon. . Thereafter, heat treatment may be further performed at 1800 to 2200 ° C.
【００１５】また、熱分解炭素の含浸、被覆は、ＣＶＩ
法によって行うことが好ましい。これによって、熱分解
炭素をＣ／Ｃ材の気孔を介して内部にまで含浸し、かつ
表面を被覆することができる。ここで、熱分解炭素と
は、炭化水素類、例えば、炭素数１〜８、特に炭素数３
のプロパンやメタンガス等の炭化水素ガスもしくは炭化
水素化合物を熱分解させて得られる高純度で高結晶化度
の黒鉛化物である。このＣＶＩ法による含浸後、ＣＶＤ
法により熱分解炭素を被覆することもできる。もちろ
ん、ＣＶＤ法による熱分解炭素の被覆だけであってもよ
い。In addition, impregnation and coating of pyrolytic carbon are performed by CVI
It is preferable to carry out by a method. Thereby, the pyrolytic carbon can be impregnated into the interior through the pores of the C / C material, and the surface can be coated. Here, pyrolytic carbon refers to hydrocarbons, for example, having 1 to 8 carbon atoms, particularly 3 carbon atoms.
Is a high purity, high crystallinity graphitic substance obtained by thermally decomposing a hydrocarbon gas or a hydrocarbon compound such as propane or methane gas. After impregnation by this CVI method, CVD
Pyrolytic carbon can be coated by the method. Of course, only the coating of the pyrolytic carbon by the CVD method may be used.
【００１６】また、ここでいうＣＶＩ法とは、化学気相
含浸法のことであり、前述した熱分解炭素を浸透析出さ
せる方法であって、前述した炭化水素類あるいは炭化水
素化合物を用い、炭化水素濃度３〜３０％好ましくは５
〜１５％とし、全圧を１３．３ｋＰａ好ましくは６．６
５ｋＰａ以下の操作をする。このような操作を行った場
合、炭化水素が基材表面付近で脱水素、熱分解、重合な
どによって巨大炭素化合物を形成し、これが基材上に沈
積、析出し、更に脱水素反応が進み緻密な熱分解炭素層
が形成され、あるいは浸透して含浸される。析出の温度
範囲は一般に８００〜２５００℃までの広い範囲である
が、できるだけ多く含浸するためには１３００℃以下の
比較的低温領域で熱分解炭素を析出させることが望まし
い。また析出時間は５０時間好ましくは１００時間以上
の長時間にすることが内部にまで熱分解炭素を形成させ
る場合には適している。さらにこれによって、各繊維間
の隅々にまで熱分解炭素を形成させることができる。ま
た含浸の程度を高めるために、等温法、温度勾配法、圧
力勾配法等が使用でき、時間の短縮及び緻密化を可能に
するパルス法を使用してもよい。The CVI method referred to herein is a chemical vapor impregnation method, which is a method of permeating and depositing the above-mentioned pyrolytic carbon, and using the above-mentioned hydrocarbons or hydrocarbon compounds to form carbonized carbon. Hydrogen concentration 3 to 30%, preferably 5
１５15%, and the total pressure is 13.3 kPa, preferably 6.6.
Operate at 5 kPa or less. When such an operation is performed, the hydrocarbon forms a giant carbon compound near the surface of the base material by dehydrogenation, thermal decomposition, polymerization, etc., which deposits and precipitates on the base material, and the dehydrogenation reaction further proceeds, resulting in a dense body. A pyrolytic carbon layer is formed or penetrated and impregnated. The temperature range for precipitation is generally a wide range from 800 to 2500 ° C., but in order to impregnate as much as possible, it is desirable to deposit pyrolytic carbon in a relatively low temperature range of 1300 ° C. or less. A deposition time of 50 hours, preferably 100 hours or more is suitable for forming pyrolytic carbon inside. Furthermore, this allows pyrolytic carbon to be formed in every corner between the fibers. Further, in order to increase the degree of impregnation, an isothermal method, a temperature gradient method, a pressure gradient method, or the like can be used, and a pulse method capable of shortening time and densifying may be used.
【００１７】本発明にかかるＣ／Ｃ材製ネジは以上のよ
うに構成されており、ネジの呼び径や、ピッチや、用
途、使用条件に応じて炭素繊維を適宜選択し、所望のネ
ジ形状に加工後、ネジ部にガラス状炭素を含浸又は／及
び被覆、若しくは、熱分解炭素を含浸又は／及び被覆す
ることで、ネジ部における炭素繊維同士の結合力を高め
ることができ、ネジ部の強度を高め、また、表面の毛羽
立ちを抑えて、滑らかな表面にできる。これによってス
ムーズな締結を行うことができるようにしたものであ
る。The C / C screw according to the present invention is configured as described above. Carbon fibers are appropriately selected according to the nominal diameter, pitch, application, and use conditions of the screw, and a desired screw shape is obtained. After processing, the screw portion is impregnated with and / or coated with glassy carbon, or impregnated or / and coated with pyrolytic carbon, whereby the bonding force between carbon fibers in the screw portion can be increased. Increases strength and suppresses fluffing on the surface, resulting in a smooth surface. Thus, smooth fastening can be performed.
【００１８】[0018]
【実施例】以下、実施例により、本発明をより具体的に
説明する。なお、本発明に係るＣ／Ｃ材製ネジは下記の
実施例に限定されるものではない。The present invention will be described more specifically with reference to the following examples. The C / C screws according to the present invention are not limited to the following embodiments.
【００１９】（実施例１）スパンヤーンの炭素繊維の平
織クロスにフェノール樹脂を塗工しプリプレグを作製
し、このプリプレグを３００×３００ｍｍに裁断した
後、複数枚を積層し熱圧プレスで１６０℃で、厚さ２０
ｍｍになるように成形した。この成形体を１０℃／ｈの
昇温速度で、８００℃まで加熱し、焼成処理を行った。
その後、ピッチ含浸、焼成を数回繰り返し、更に最終熱
処理として２０００℃で熱処理を行い、かさ密度１．６
１ｇ／ｃｍ3 の２ＤのＣ／Ｃ材を得た。このＣ／Ｃ材か
ら、Ｍ２０の全ネジボルトを加工した。加工された全ネ
ジボルトは欠けのないものであった。次いで、ハロゲン
ガスによる高純度化処理を行い、試験用のネジとした。
かさ密度は１．６１ｇ／ｃｍ3 、曲げ強度は９５ＭＰａ
であった。(Example 1) A prepreg was prepared by applying a phenol resin to a plain woven cloth of spun yarn carbon fiber, and the prepreg was cut into 300 x 300 mm. , Thickness 20
mm. This molded body was heated to 800 ° C. at a rate of temperature increase of 10 ° C./h, and baked.
Thereafter, pitch impregnation and firing were repeated several times, and a heat treatment was further performed at 2000 ° C. as a final heat treatment, and the bulk density was 1.6.
A 2D C / C material of 1 g / cm 3 was obtained. From this C / C material, all M20 screw bolts were machined. All the processed screw bolts were intact. Next, a high-purity treatment was performed using a halogen gas to obtain a test screw.
Bulk density is 1.61 g / cm 3 , flexural strength is 95 MPa
Met.
【００２０】（実施例２）６Ｋのフィラメントの炭素繊
維の平織クロスにフェノール樹脂を塗工しプリプレグを
作製し、このプリプレグを１０００×１０００ｍｍに裁
断した後、複数枚を積層し、１６０℃で熱圧成形を行
い、厚さ２０ｍｍの成形体とした。この成形体を１０℃
／ｈの昇温速度で、８００℃まで加熱し、焼成処理を行
った。その後、ピッチ含浸、焼成を数回繰り返し、更に
最終熱処理として２０００℃で熱処理を行い、かさ密度
１．６４ｇ／ｃｍ3 の２ＤのＣ／Ｃ材を得た。このＣ／
Ｃ材から、Ｔｒ２０の全ネジボルトを加工した。加工さ
れたＴｒ２０×４の全ネジボルトは、一部のネジ山に欠
けが生じたものであったため、この欠けの生じやすい２
面（炭素繊維の積層方向に直交する上下の面）を予め機
械加工によって削除し、図１に示す形状のネジとした。
次いで、ハロゲンガスによる高純度化処理を行い、試験
用のネジとした。かさ密度は１．６４ｇ／ｃｍ3 、曲げ
強度は１６９ＭＰａであった。(Example 2) A prepreg was prepared by applying a phenol resin to a plain woven cloth of carbon fiber of 6K filaments, and the prepreg was cut into 1000 x 1000 mm. Press molding was performed to obtain a molded body having a thickness of 20 mm. This molded body is kept at 10 ° C
At a heating rate of / h, the mixture was heated to 800 ° C. to perform a firing treatment. Thereafter, pitch impregnation and firing were repeated several times, and heat treatment was further performed at 2000 ° C. as a final heat treatment to obtain a 2D C / C material having a bulk density of 1.64 g / cm 3 . This C /
From the C material, all screw bolts of Tr20 were machined. Since all of the processed Tr20 × 4 screw bolts had chippings in some of the screw threads, the chippings were likely to occur.
The faces (upper and lower faces perpendicular to the lamination direction of the carbon fibers) were previously removed by machining to obtain screws having the shape shown in FIG.
Next, a high-purity treatment was performed using a halogen gas to obtain a test screw. The bulk density was 1.64 g / cm 3 and the flexural strength was 169 MPa.
【００２１】（実施例３）実施例１におけるネジに、フ
ェノール樹脂を含浸、熱硬化させた後、１０℃／ｈの昇
温速度で、８００℃まで加熱し、焼成処理を行った。そ
の後、最終熱処理として２０００℃で熱処理を行った
後、ハロゲンガスによる高純度化処理を行い、試験用の
ネジとした。かさ密度は１．６３ｇ／ｃｍ3 、曲げ強度
は１０２ＭＰａであった。(Example 3) The screw in Example 1 was impregnated with a phenolic resin and thermally cured, and then heated to 800 ° C at a rate of 10 ° C / h to perform a baking treatment. Then, after performing a heat treatment at 2000 ° C. as a final heat treatment, a high-purity treatment with a halogen gas was performed to obtain a test screw. The bulk density was 1.63 g / cm 3 and the bending strength was 102 MPa.
【００２２】（実施例４）実施例２におけるネジに、フ
ェノール樹脂を含浸、熱硬化させた後、１０℃／ｈの昇
温速度で、８００℃まで加熱し、焼成処理を行った。そ
の後、最終熱処理として２０００℃で熱処理を行った
後、ハロゲンガスによる高純度化処理を行い、試験用の
ネジとした。かさ密度は１．６５ｇ／ｃｍ3 、曲げ強度
は１８２ＭＰａであった。(Example 4) The screw in Example 2 was impregnated with a phenol resin and thermally cured, and then heated to 800 ° C at a rate of 10 ° C / h to perform a firing treatment. Then, after performing a heat treatment at 2000 ° C. as a final heat treatment, a high-purity treatment with a halogen gas was performed to obtain a test screw. The bulk density was 1.65 g / cm 3 and the flexural strength was 182 MPa.
【００２３】（実施例５）実施例１におけるネジを、Ｃ
ＶＤ炉で１２００℃で、原料ガスとしてＣ3 Ｈ8ガス
を、キャリアガスとしてＨ2 ガスを供給し、ＣＶＩ処理
を行い、熱分解炭素を含浸被覆し、試験用のネジとし
た。かさ密度は１．７１ｇ／ｃｍ3 、曲げ強度は１４２
ＭＰａであった。(Embodiment 5) The screw in Embodiment 1 is replaced with C
In a VD furnace at 1200 ° C., C 3 H 8 gas was supplied as a raw material gas and H 2 gas was supplied as a carrier gas, CVI treatment was performed, and pyrolytic carbon was impregnated and coated to obtain test screws. Bulk density is 1.71 g / cm 3 , flexural strength is 142
MPa.
【００２４】（実施例６）実施例２におけるネジを、Ｃ
ＶＤ炉で１２００℃で、原料ガスとしてＣ3 Ｈ8ガス
を、キャリアガスとしてＨ2 ガスを供給し、ＣＶＩ処理
を行い、熱分解炭素を含浸被覆し、試験用のネジとし
た。かさ密度は１．７５ｇ／ｃｍ3 、曲げ強度は２５５
ＭＰａであった。(Embodiment 6) The screws in Embodiment 2 are replaced with C
In a VD furnace at 1200 ° C., C 3 H 8 gas was supplied as a raw material gas and H 2 gas was supplied as a carrier gas, CVI treatment was performed, and pyrolytic carbon was impregnated and coated to obtain test screws. Bulk density is 1.75 g / cm 3 , flexural strength is 255
MPa.
【００２５】（比較例１）高純度処理された等方性黒鉛
材（ＩＳＯ−６３０：東洋炭素（株）製）から、Ｍ２０
の全ネジボルトを加工し、試験用のネジとした。(Comparative Example 1) A high purity treated isotropic graphite material (ISO-630: manufactured by Toyo Carbon Co., Ltd.)
All screw bolts were machined to obtain test screws.
【００２６】実施例１乃至６及び比較例１のネジについ
て、それぞれ引張試験を行い、ネジ山強度を測定した。
引張試験は、メスネジが加工された引張試験用治具を両
端に取付けて、２４．５ｋＮのロードセルを用い、クロ
スヘッド移動速度を０．５ｍｍ／ｍｉｎとし、静的引張
荷重を掛けて行い、ネジ山が崩れた時点での強度を、ネ
ジ山強度とした。この時、メスネジへのネジ込み深さ
は、ネジの直径に等しい長さとし、各メスネジ間の距離
は４０ｍｍとした。Each of the screws of Examples 1 to 6 and Comparative Example 1 was subjected to a tensile test, and the thread strength was measured.
The tensile test was performed by attaching a jig for tensile test in which a female screw was processed to both ends, using a 24.5 kN load cell, setting the crosshead moving speed to 0.5 mm / min, applying a static tensile load, and The strength at the time when the peak collapsed was defined as the screw thread strength. At this time, the depth of screwing into the female screw was a length equal to the diameter of the screw, and the distance between each female screw was 40 mm.
【００２７】各ネジのネジ山強度を表１にまとめて示
す。Table 1 shows the thread strength of each screw.
【００２８】[0028]
【表１】 [Table 1]
【００２９】表１より、ネジ部を台形ネジとした方が、
メートルネジの場合よりも強度が高くなり、更に、該ネ
ジ部にガラス状炭素を含浸又は／及び被覆することで、
強度が向上し、また、該ネジ部に熱分解炭素を含浸又は
／及び被覆することで、ガラス状炭素を含浸又は／及び
被覆した場合よりも更に強度が向上することがわかる。
このことから、締結強度が必要な場合は、ネジ部を台形
ネジとし、そのネジ部に熱分解炭素を含浸又は／及び被
覆することで、強度を大幅に向上させることができるこ
とがわかる。As shown in Table 1, when the screw portion is a trapezoidal screw,
The strength is higher than in the case of the metric screw, and furthermore, by impregnating or / and coating the screw portion with glassy carbon,
It can be seen that the strength is improved, and that the screw portion is impregnated or / and coated with pyrolytic carbon, and the strength is further improved as compared with the case where the glass portion is impregnated and / or coated.
From this, it can be seen that when fastening strength is required, the thread can be made trapezoidal and the thread can be impregnated and / or coated with pyrolytic carbon to significantly improve strength.
【００３０】[0030]
【発明の効果】本発明にかかるＣ／Ｃ材製ネジは以上の
ように構成されており、ネジの呼び径、ピッチ、用途、
使用条件に応じて炭素繊維を適宜選択し、所望のネジ形
状に加工後、ネジ部にガラス状炭素を含浸又は／及び被
覆、若しくは、熱分解炭素を含浸又は／及び被覆するこ
とで、ネジ部における炭素繊維同士の結合力を高めるこ
とができ、ネジ部の強度を高め、また、表面の毛羽立ち
を抑えて、滑らかな表面とすることができ、各構成部品
を締結する時にスムーズな締結を行うことができる。The screw made of C / C material according to the present invention is configured as described above, and the nominal diameter, pitch, application, and
The carbon fiber is appropriately selected according to the use conditions, and after processing into a desired screw shape, the screw portion is impregnated or / and coated with glassy carbon, or impregnated or / and coated with pyrolytic carbon, thereby forming the screw portion. Can increase the bonding force between carbon fibers in each other, increase the strength of the threaded portion, suppress the fluffing of the surface, and make the surface smooth, and perform smooth fastening when fastening each component be able to.
【図１】本実施例における全ネジボルトの一形態例を示
す斜視図である。FIG. 1 is a perspective view showing an example of an embodiment of a full-thread bolt according to the present embodiment.
１ ネジ 1 screw
Claims (7)
るネジであって、前記炭素繊維がスパンヤーンの平織ク
ロスである炭素繊維強化炭素複合材料製ネジ。1. A screw made of a 2D carbon fiber reinforced carbon composite material, wherein the carbon fiber is a plain woven cloth of spun yarn.
るネジであって、前記炭素繊維がフィラメントの平織ク
ロスである炭素繊維強化炭素複合材料製ネジ。2. A screw made of a 2D carbon fiber reinforced carbon composite material, wherein the carbon fiber is a plain woven cloth of filaments.
浸又は／及び被覆がされた請求項１又は２に記載の炭素
繊維強化炭素複合材料製ネジ。3. The screw made of a carbon fiber reinforced carbon composite material according to claim 1, wherein the screw portion of the screw is impregnated and / or coated with glassy carbon.
又は／及び被覆がされた請求項１又は２に記載の炭素繊
維強化炭素複合材料製ネジ。4. The screw made of a carbon fiber reinforced carbon composite material according to claim 1, wherein the screw portion of the screw is impregnated with and / or coated with pyrolytic carbon.
以下である請求項１〜４のいずれかに記載の炭素繊維強
化炭素複合材料製ネジ。5. Highly purified, 10 ppm ash content
The carbon fiber reinforced carbon composite material screw according to any one of claims 1 to 4, which is:
３〜５のいずれかに記載の炭素繊維強化炭素複合材料製
ネジ。6. The device according to claim 1, wherein said screw portion is a triangular screw.
6. The screw made of the carbon fiber reinforced carbon composite material according to any one of 3 to 5.
こ歯ネジのいずれかである請求項２〜５のいずれかに記
載の炭素繊維強化炭素複合材料製ネジ。7. The screw made of carbon fiber reinforced carbon composite material according to claim 2, wherein said screw portion is one of a trapezoidal screw, a square screw and a saw-tooth screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000199229A JP3983459B2 (en) | 2000-01-11 | 2000-06-30 | Carbon fiber reinforced carbon composite screw |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000006150 | 2000-01-11 | ||
| JP2000-6150 | 2000-02-04 | ||
| JP2000-27638 | 2000-02-04 | ||
| JP2000027638 | 2000-02-04 | ||
| JP2000199229A JP3983459B2 (en) | 2000-01-11 | 2000-06-30 | Carbon fiber reinforced carbon composite screw |
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| Publication Number | Publication Date |
|---|---|
| JP2001289226A true JP2001289226A (en) | 2001-10-19 |
| JP3983459B2 JP3983459B2 (en) | 2007-09-26 |
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|---|---|---|---|
| JP2000199229A Expired - Lifetime JP3983459B2 (en) | 2000-01-11 | 2000-06-30 | Carbon fiber reinforced carbon composite screw |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7883240B2 (en) * | 2007-10-16 | 2011-02-08 | Foxsemicon Integrated Technology, Inc. | Light emitting diode based light source assembly |
| JP2011027182A (en) * | 2009-07-24 | 2011-02-10 | Oki Kogei:Kk | Screwing member |
| WO2019117012A1 (en) | 2017-12-12 | 2019-06-20 | ハードロック工業株式会社 | Member having screw thread made from carbon fiber-reinforced composite material |
| CN110528150A (en) * | 2019-09-19 | 2019-12-03 | 天津工业大学 | A kind of soft or hard shuffling woven fabric and preparation method thereof |
| CN114195541A (en) * | 2021-12-31 | 2022-03-18 | 富优特(山东)新材料科技有限公司 | Preparation method and application of carbon/carbon composite material impregnation slurry containing polyimide |
| JP2023070210A (en) * | 2021-11-09 | 2023-05-19 | 株式会社Ｃｆｃデザイン | Screw component formed of two-dimensional carbon/carbon composite material comprising stacked anisotropic nonwoven fabrics |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7883240B2 (en) * | 2007-10-16 | 2011-02-08 | Foxsemicon Integrated Technology, Inc. | Light emitting diode based light source assembly |
| JP2011027182A (en) * | 2009-07-24 | 2011-02-10 | Oki Kogei:Kk | Screwing member |
| WO2019117012A1 (en) | 2017-12-12 | 2019-06-20 | ハードロック工業株式会社 | Member having screw thread made from carbon fiber-reinforced composite material |
| KR20200095486A (en) | 2017-12-12 | 2020-08-10 | 하드 로크 고교 가부시키가이샤 | Threaded member made of carbon fiber reinforced composite material |
| CN110528150A (en) * | 2019-09-19 | 2019-12-03 | 天津工业大学 | A kind of soft or hard shuffling woven fabric and preparation method thereof |
| JP2023070210A (en) * | 2021-11-09 | 2023-05-19 | 株式会社Ｃｆｃデザイン | Screw component formed of two-dimensional carbon/carbon composite material comprising stacked anisotropic nonwoven fabrics |
| WO2023085080A1 (en) * | 2021-11-09 | 2023-05-19 | 株式会社Ｃｆｃデザイン | Screw component formed of two-dimensional carbon/carbon composite material that is obtained by stacking anisotropic nonwoven fabrics |
| JP7320578B2 (en) | 2021-11-09 | 2023-08-03 | 株式会社Ｃｆｃデザイン | Screw part made of two-dimensional carbon/carbon composite material laminated with anisotropic nonwoven fabric |
| DE112022000159T5 (en) | 2021-11-09 | 2023-08-10 | Cfc Design Inc. | Fastening screws made from a two-dimensional carbon-carbon composite material produced by laminating anisotropic non-woven fabrics |
| CN114195541A (en) * | 2021-12-31 | 2022-03-18 | 富优特(山东)新材料科技有限公司 | Preparation method and application of carbon/carbon composite material impregnation slurry containing polyimide |
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