JP3182939B2 - Manufacturing method of composite material - Google Patents
Manufacturing method of composite materialInfo
- Publication number
- JP3182939B2 JP3182939B2 JP31856992A JP31856992A JP3182939B2 JP 3182939 B2 JP3182939 B2 JP 3182939B2 JP 31856992 A JP31856992 A JP 31856992A JP 31856992 A JP31856992 A JP 31856992A JP 3182939 B2 JP3182939 B2 JP 3182939B2
- Authority
- JP
- Japan
- Prior art keywords
- fibers
- composite material
- long fiber
- molten metal
- long
- 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 - Fee Related
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、複合材の製造方法に関
するものであり、特に、長尺化が可能な複合材の製造方
法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a composite material, and more particularly to a method for producing a composite material which can be lengthened.
【０００２】[0002]
【従来の技術】従来、複合材の製造方法として、たとえ
ば溶融金属浸漬法が用いられてきた。2. Description of the Related Art Conventionally, as a method for producing a composite material, for example, a molten metal immersion method has been used.
【０００３】この溶融金属浸漬法とは、細径の繊維の集
合体からなる長繊維束を溶融金属中に浸漬し、溶融金属
を長繊維束中に含浸させた後、含浸した溶融金属を連続
的に凝固させて、複合材を製造する方法である。[0003] This molten metal immersion method is to immerse a long fiber bundle composed of an aggregate of small diameter fibers in a molten metal, impregnate the molten metal into the long fiber bundle, and then continuously impregnate the molten metal. This is a method of manufacturing a composite material by solidifying it.
【０００４】また、この溶融金属浸漬法を用いた複合材
の製造では、ノズル等の導入も試みられている。すなわ
ち、溶融金属を含浸させた長繊維束を、溶融金属を凝固
させる前に、たとえばテーパ状のノズル等に通して、余
分な金属を絞り落としてから外形を成形することによ
り、複合材中の長繊維体積割合を制御する方法である。In the production of a composite material using the molten metal immersion method, introduction of a nozzle or the like has been attempted. That is, before solidifying the molten metal, the long fiber bundle impregnated with the molten metal is passed through, for example, a tapered nozzle to squeeze out excess metal and form the outer shape. This is a method for controlling the long fiber volume ratio.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、この溶
融金属浸漬法により太径の複合材を製造する場合、長繊
維束に含まれる長繊維の数が増え束が大きくなるため、
溶融金属を長繊維束内部にまで含浸させるために、長繊
維束を長時間溶融金属中に浸漬する必要が生じる。この
とき、長繊維束の外側に位置する長繊維は、長時間溶融
金属と接触することになる。However, when a large diameter composite material is manufactured by the molten metal immersion method, the number of long fibers contained in the long fiber bundle increases and the bundle becomes large.
In order to impregnate the molten metal into the inside of the long fiber bundle, it is necessary to immerse the long fiber bundle in the molten metal for a long time. At this time, the long fiber located outside the long fiber bundle comes into contact with the molten metal for a long time.
【０００６】このように、長時間溶融金属と接触する
と、長繊維は、溶融金属との反応により、その特性が劣
化する。また、長繊維束表面に化合物層が大きく成長
し、破断しやすくなる。[0006] As described above, when the long fiber comes into contact with the molten metal for a long time, the properties of the long fiber are deteriorated due to the reaction with the molten metal. In addition, the compound layer grows largely on the surface of the long fiber bundle, and it is easily broken.
【０００７】このため、従来の溶融金属浸漬法によって
製造された太径の複合材は、その特性が期待されるもの
より低い値となっていた。For this reason, the large-diameter composite material manufactured by the conventional molten metal immersion method has a lower value than expected.
【０００８】この発明の目的は、上述の問題点を解決
し、特性に優れた太径の長尺複合材を、連続的に製造す
る方法を提供することにある。An object of the present invention is to solve the above-mentioned problems and to provide a method for continuously producing a large-diameter long composite material having excellent characteristics.
【０００９】[0009]
【課題を解決するための手段】この発明による複合材の
製造方法は、複数束の長繊維束を溶融金属中に浸漬し長
繊維束中に溶融金属を含浸させるステップと、溶融金属
が含浸した複数束の長繊維束を溶融金属中で１本の束に
集束するステップと、集束された長繊維束中に含浸した
溶融金属を連続的に凝固させるステップとを備える。A method of manufacturing a composite material according to the present invention comprises the steps of dipping a plurality of long fiber bundles in a molten metal to impregnate the long fiber bundle with the molten metal; The method includes a step of converging a plurality of long fiber bundles into one bundle in the molten metal, and a step of continuously solidifying the molten metal impregnated in the bundled long fiber bundles.
【００１０】好ましくは、長繊維は、炭素繊維、ＳｉＣ
繊維、Ｓｉ−Ｃ−Ｔｉ−Ｏ繊維、アルミナ繊維、Ｂ繊
維、金属繊維およびこれらの長繊維に表面改質層を設け
たものから選ばれるとよい。Preferably, the long fibers are carbon fibers, SiC
The fibers may be selected from fibers, Si-C-Ti-O fibers, alumina fibers, B fibers, metal fibers, and those obtained by providing a surface-modified layer on these long fibers.
【００１１】また、好ましくは、金属は、アルミニウ
ム、マグネシウム、銅、亜鉛、鉛およびこれらを主体と
する合金から選ばれるとよい。[0011] Preferably, the metal is selected from aluminum, magnesium, copper, zinc, lead and alloys mainly composed of these.
【００１２】[0012]
【作用】この発明の製造方法では、溶融金属が含浸した
複数束の長繊維束を、溶融金属中で、１本の束に集束し
ている。そのため、各長繊維束のまわりに、溶融金属を
十分に供給することができ、また各長繊維束の径が太く
ないため、長繊維束の中央まで溶融金属が含浸するのに
要する時間を短縮できる。したがって、長繊維と溶融金
属との反応が抑制され、長繊維の特性の劣化および長繊
維束表面における化合物層の生成を防止することができ
る。According to the manufacturing method of the present invention, a plurality of long fiber bundles impregnated with molten metal are bundled into one bundle in the molten metal. As a result, the molten metal can be sufficiently supplied around each of the long fiber bundles, and since the diameter of each of the long fiber bundles is not large, the time required for the molten metal to be impregnated to the center of the long fiber bundle is reduced. it can. Therefore, the reaction between the long fiber and the molten metal is suppressed, and deterioration of the properties of the long fiber and formation of a compound layer on the surface of the long fiber bundle can be prevented.
【００１３】[0013]
【実施例】図１は、本発明の一実施例による複合材の製
造工程を示す斜視図である。FIG. 1 is a perspective view showing a manufacturing process of a composite material according to one embodiment of the present invention.
【００１４】図１を参照して、６束の長繊維束１を溶融
金属２中に浸漬し、各長繊維束１内に溶融金属２を含浸
させる。続いて、溶融金属２が含浸した６束の長繊維束
１を、溶融金属２中で、ノズル３を介して、１本の束に
集束した後、溶融金属２を凝固させて、複合材４を製造
する。以上の工程は、矢印５の方向へ連続的に行なわれ
る。Referring to FIG. 1, six long fiber bundles 1 are immersed in molten metal 2 to impregnate each long fiber bundle 1 with molten metal 2. Subsequently, the six long fiber bundles 1 impregnated with the molten metal 2 are bundled into one bundle through the nozzle 3 in the molten metal 2, and the molten metal 2 is solidified to form a composite material 4. To manufacture. The above steps are performed continuously in the direction of arrow 5.
【００１５】ノズル３は、長繊維束１を集束すると同時
に、所望とする複合材の長繊維体積割合を得るために余
分な溶融金属２を絞り落とす役目、さらには、複合材４
の外形を成形する役目をも果たす。The nozzle 3 serves to converge the long fiber bundle 1 and simultaneously squeeze out excess molten metal 2 to obtain a desired long fiber volume ratio of the composite material.
It also plays the role of shaping the external shape.
【００１６】長繊維束１を構成する長繊維は、炭素繊
維、ＳｉＣ繊維、Ｓｉ−Ｃ−Ｔｉ−Ｏ繊維、アルミナ繊
維、Ｂ繊維、金属繊維が望ましく、長繊維の濡れ性ある
いは反応性を改善するために表面に表面改質層を設けた
ものであってもよい。また、６束の長繊維束１はすべて
同種のものに限られず、異なる種類の長繊維束であって
もよい。さらに、長繊維束１は、通常、たとえば炭素繊
維の場合１０００本〜１２０００本の繊維の束の状態で
市販されているため、これをこのまま１単位束の長繊維
束として用いることが望ましい。The long fibers constituting the long fiber bundle 1 are preferably carbon fibers, SiC fibers, Si-C-Ti-O fibers, alumina fibers, B fibers, and metal fibers, and improve the wettability or reactivity of the long fibers. In order to achieve this, a surface modified layer may be provided on the surface. Further, the six bundles of long fiber bundles 1 are not limited to the same kind, and may be different kinds of long fiber bundles. Furthermore, since the long fiber bundle 1 is usually commercially available in the form of, for example, a bundle of 1,000 to 12,000 fibers in the case of carbon fibers, it is desirable to use this as it is as a long fiber bundle of one unit bundle.
【００１７】溶融金属２は、アルミニウム、マグネシウ
ム、銅、亜鉛、鉛およびこれらを主体とする合金が望ま
しい。The molten metal 2 is desirably aluminum, magnesium, copper, zinc, lead or an alloy mainly composed of these.
【００１８】図２は、本発明の他の実施例による複合材
の製造工程を示す斜視図である。図２を参照して、長繊
維束を一旦集束して１本の束とした後、溶融金属２中に
浸漬する。続いて、プーリ６を介して、小さい長繊維束
７に分離して、溶融金属２が含浸しやすくする。その
後、上述の実施例と同様に、長繊維束７を、溶融金属２
中でノズル３を介して１本の束に集束した後、溶融金属
２を凝固させて、複合材４を製造する。以上の工程は、
矢印５の方向へ連続的に行なわれる。FIG. 2 is a perspective view showing a manufacturing process of a composite material according to another embodiment of the present invention. Referring to FIG. 2, the long fiber bundle is once bundled into one bundle, and then immersed in molten metal 2. Subsequently, it is separated into small long fiber bundles 7 via pulleys 6 to facilitate impregnation of the molten metal 2. Then, similarly to the above-described embodiment, the long fiber bundle 7 is
After converging into one bundle through the nozzle 3 in the inside, the molten metal 2 is solidified to produce the composite material 4. The above steps are
It is performed continuously in the direction of arrow 5.
【００１９】このように、溶融金属に浸漬後、長繊維束
をプーリ等で分離する際には、長繊維が交錯しないよう
に注意する必要がある。As described above, when the long fiber bundle is separated by the pulley or the like after being immersed in the molten metal, care must be taken so that the long fibers do not intersect.
【００２０】なお、以上の実施例に関する開示は、本発
明の単なる具体例に過ぎず、本発明の技術的範囲を何ら
制限するものではない。たとえば、長繊維束を１本の束
に集束する際、上述の実施例ではノズルを用いている
が、図３に示すように、各長繊維束を撚り合わせてもよ
い。また、図４に示すように、ある長繊維束を他の長繊
維束に巻き付けてもよい。さらに、ノズルを用いる方
法、撚り合わせる方法および巻き付ける方法を、それぞ
れ組合わせることにより、長繊維束の集束を行なっても
よい。The disclosure of the above embodiments is merely a specific example of the present invention, and does not limit the technical scope of the present invention. For example, when the long fiber bundle is bundled into one bundle, the nozzles are used in the above-described embodiment, but the long fiber bundles may be twisted as shown in FIG. Further, as shown in FIG. 4, a certain long fiber bundle may be wound around another long fiber bundle. Furthermore, the method of using a nozzle, the method of twisting, and the method of winding may be combined to converge the long fiber bundle.
【００２１】また、製造装置に関しても、上述の実施例
で示したもの以外に、たとえば図５に示すような装置を
用いても、同様の効果が期待できる。Similar effects can be expected by using a manufacturing apparatus such as the one shown in FIG. 5 in addition to the apparatus shown in the above embodiment.
【００２２】（実験例）図１に示す装置を用いて、表１
のＮｏ．１〜Ｎｏ．１２に示す１２種の複合材を作製
し、その特性を測定した。(Experimental Example) Using the apparatus shown in FIG.
No. 1 to No. Twelve kinds of composite materials shown in No. 12 were produced, and the characteristics were measured.
【００２３】また、比較のため、従来の溶融金属浸漬法
を用いて、表１のＮｏ．１３〜Ｎｏ．１９に示す７種の
複合材を作製し、その特性を測定した。For comparison, No. 1 in Table 1 was obtained by using the conventional molten metal immersion method. 13-No. Seventeen types of composite materials shown in No. 19 were produced, and the characteristics were measured.
【００２４】これらの測定結果を、併せて表１に示す。
表１中の長繊維種類とは、用いた長繊維束を構成する長
繊維の種類を示す。表１において、ＳｉＣはＳｉＣ繊
維、Ｓｉ−Ｃ−Ｔｉ−ＯはＳｉ−Ｃ−Ｔｉ−Ｏ繊維、Ｂ
はＢ繊維、Ｃは炭素繊維、Ａｌ2 Ｏ3 はアルミナ繊維を
それぞれ示す。Table 1 also shows the results of these measurements.
The type of long fiber in Table 1 indicates the type of long fiber constituting the used long fiber bundle. In Table 1, SiC is SiC fiber, Si-C-Ti-O is Si-C-Ti-O fiber, B
Represents a B fiber, C represents a carbon fiber, and Al 2 O 3 represents an alumina fiber.
【００２５】また、表１中の金属種類とは、長繊維束と
複合する金属種類を示す。表１において、Ａｌはアルミ
ニウム（Ａｌ０５０）合金、Ｍｇはマグネシウム（９９
％Ｍｇ）合金、Ｃｕは銅（Ｃ１０２０）合金、Ｚｎは亜
鉛（９９％Ｚｎ）合金、Ｐｂ−Ｓｎは鉛錫（Ｐｂ−５０
％Ｓｎ）合金をそれぞれ示す。これらの金属の溶融温度
は、それぞれ、アルミニウム合金が６８０℃、マグネシ
ウム合金が６７０℃、銅合金が１２００℃、亜鉛合金が
４５０℃、鉛錫合金が３２０℃であった。The types of metals in Table 1 indicate types of metals that are combined with long fiber bundles. In Table 1, Al is an aluminum (Al050) alloy, and Mg is magnesium (99).
% Mg) alloy, Cu is a copper (C1020) alloy, Zn is a zinc (99% Zn) alloy, and Pb-Sn is lead tin (Pb-50).
% Sn) alloys are shown. The melting temperatures of these metals were 680 ° C for aluminum alloy, 670 ° C for magnesium alloy, 1200 ° C for copper alloy, 450 ° C for zinc alloy, and 320 ° C for lead-tin alloy, respectively.
【００２６】なお、炭素繊維に対して、アルミニウム合
金、マグネシウム合金、銅合金をマトリクスに用いる場
合には、炭素繊維に濡れ性を付与するため、特開昭６１
−６９４４８記載のセラミックコーティング、具体的に
は、炭素、炭化ケイ素、ホウ化チタンの３層コーティン
グを施したものを用いた。また、炭素繊維に対して、亜
鉛合金、鉛錫合金を用いる場合には、炭素繊維にＮｉあ
るいはＣｕをメッキしたものを用いた。When an aluminum alloy, a magnesium alloy, or a copper alloy is used as a matrix for carbon fibers, the wettability is imparted to the carbon fibers.
A ceramic coating described in -69448, specifically, a three-layer coating of carbon, silicon carbide, and titanium boride was used. When a zinc alloy or a lead-tin alloy is used for the carbon fiber, a carbon fiber plated with Ni or Cu is used.
【００２７】さらに、表１中の長繊維体積割合とは、得
られた複合材中の長繊維の体積割合を示す。Further, the long fiber volume ratio in Table 1 indicates the volume ratio of long fibers in the obtained composite material.
【００２８】また、表１中の１束に占める長繊維の本数
とは、１単位束中に含まれる長繊維の本数を示し、長繊
維本数とは、複合材中に含まれる長繊維の総数を示す。
すなわち、たとえば、本発明例のＮｏ．１は、１束に占
める長繊維の本数が約５００本で長繊維の総数が約４２
５００本であるから、長繊維束を８５束集束して得られ
た複合材であることを示している。一方、従来例のＮ
ｏ．１３は、１束に占める長繊維の本数と長繊維の総数
がともに約４２５００本であるから、長繊維束を１束用
いた複合材であることを示している。The number of long fibers in one bundle in Table 1 indicates the number of long fibers contained in one unit bundle, and the number of long fibers means the total number of long fibers contained in the composite material. Is shown.
That is, for example, for example, 1 indicates that the number of long fibers in one bundle is about 500 and the total number of long fibers is about 42
Since the number is 500, it indicates that the composite material is obtained by collecting 85 long fiber bundles. On the other hand, N
o. Reference numeral 13 indicates that the composite material uses one long fiber bundle because both the number of long fibers and the total number of long fibers in one bundle are about 42,500.
【００２９】さらに、表１中の浸漬時間とは、各繊維束
中に溶融金属が完全に含浸するまでにかかった時間、す
なわち、複合材を得るために必要な溶融金属浸漬時間を
示す。Further, the immersion time in Table 1 indicates the time required until the molten metal is completely impregnated in each fiber bundle, that is, the molten metal immersion time required to obtain a composite material.
【００３０】また、表１中の引張強さとは、得られた複
合材を引張試験した結果を示し、引張強さの理論値と
は、長繊維の引張強さと金属の引張強さから予想した複
合材の引張強さ（複合則（rule of mixture ）から予想
される値）を示す。さらに、表１中のＲＯＭ比とは、複
合材の引張強さを複合材の引張強さの理論値で除した値
を百分率で示したものである。The tensile strength in Table 1 indicates the result of a tensile test of the obtained composite material, and the theoretical value of the tensile strength was estimated from the tensile strength of the long fiber and the tensile strength of the metal. Shows the tensile strength (value expected from the rule of mixture) of the composite material. Further, the ROM ratio in Table 1 is a value obtained by dividing the tensile strength of the composite material by the theoretical value of the tensile strength of the composite material, as a percentage.
【００３１】[0031]
【表１】 [Table 1]
【００３２】表１から明らかなように、本発明の製造方
法によって作製された複合材Ｎｏ．１〜Ｎｏ．１２は、
従来の製法で作製された複合材Ｎｏ．１３〜Ｎｏ．１９
と比較して、溶融金属への浸漬時間が短く、さらにＲＯ
Ｍ比が高くなっており、良好な特性を有していることが
確認された。As is clear from Table 1, the composite material No. 1 produced by the production method of the present invention. 1 to No. 12 is
The composite material No. manufactured by the conventional manufacturing method. 13-No. 19
Immersion time in molten metal is shorter than that of
The M ratio was high, and it was confirmed that the film had good characteristics.
【００３３】[0033]
【発明の効果】以上説明したように、本発明による複合
材の製造方法を用いることにより、特性に優れた太径の
長尺複合材を、連続的に製造することが可能となる。As described above, by using the method for producing a composite material according to the present invention, it is possible to continuously produce a large-diameter long composite material having excellent properties.
【図１】本発明の一実施例による複合材の製造工程を示
す斜視図である。FIG. 1 is a perspective view showing a manufacturing process of a composite material according to an embodiment of the present invention.
【図２】本発明の他の実施例による複合材の製造工程を
示す斜視図である。FIG. 2 is a perspective view illustrating a manufacturing process of a composite material according to another embodiment of the present invention.
【図３】本発明による複合材の製造において、長繊維束
を集束する方法の一例を示す斜視図である。FIG. 3 is a perspective view showing an example of a method for bundling long fiber bundles in manufacturing a composite material according to the present invention.
【図４】本発明による複合材の製造において、長繊維束
を集束する方法の他の例を示す斜視図である。FIG. 4 is a perspective view showing another example of a method of bundling long fiber bundles in manufacturing a composite material according to the present invention.
【図５】本発明のさらに他の実施例による複合材の製造
工程を示す図である。FIG. 5 is a view illustrating a manufacturing process of a composite material according to still another embodiment of the present invention.
１ 長繊維束 ２ 溶融金属 ４ 複合材 ７ 長繊維束 なお、各図中、同一符号は同一または相当部分を示す。 DESCRIPTION OF SYMBOLS 1 Long fiber bundle 2 Molten metal 4 Composite material 7 Long fiber bundle In each figure, the same code | symbol shows the same or equivalent part.
フロントページの続き (56)参考文献 特開 平５−43961（ＪＰ，Ａ) 特開 昭53−45015（ＪＰ，Ａ) 特公 昭62−37099（ＪＰ，Ｂ２) 特公 昭56−9256（ＪＰ，Ｂ２) 特公 昭45−17833（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.7，ＤＢ名) C22C 47/00 - 49/14 B22D 19/00 B22D 23/04 Continuation of the front page (56) References JP-A-5-43961 (JP, A) JP-A-53-45015 (JP, A) JP-B-62-37099 (JP, B2) JP-B-56-9256 (JP, A) , B2) JP-B-45-17833 (JP, B1) (58) Fields investigated (Int. Cl. 7 , DB name) C22C 47/00-49/14 B22D 19/00 B22D 23/04
Claims (3)
し、前記長繊維束中に前記溶融金属を含浸させるステッ
プと、 前記溶融金属が含浸した前記複数束の長繊維束を、前記
溶融金属中で１本の束に集束するステップと、 前記集束された長繊維束中に含浸した前記溶融金属を、
連続的に凝固させるステップとを備える、複合材の製造
方法。A step of immersing a plurality of long fiber bundles in a molten metal and impregnating the molten metal into the long fiber bundle; and Converging into a single bundle in the molten metal; and
Continuously solidifying the composite material.
Ｓｉ−Ｃ−Ｔｉ−Ｏ繊維、アルミナ繊維、Ｂ繊維、金属
繊維およびこれらの長繊維に表面改質層を設けたものか
ら選ばれる、請求項１記載の複合材の製造方法。2. The method according to claim 1, wherein the long fibers are carbon fibers, SiC fibers,
The method for producing a composite material according to claim 1, wherein the composite material is selected from Si-C-Ti-O fibers, alumina fibers, B fibers, metal fibers, and those obtained by providing a surface-modified layer on these long fibers.
ム、銅、亜鉛、鉛およびこれらを主体とする合金から選
ばれる、請求項１または請求項２記載の複合材の製造方
法。3. The method for producing a composite material according to claim 1, wherein the metal is selected from aluminum, magnesium, copper, zinc, lead, and an alloy containing these as a main component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31856992A JP3182939B2 (en) | 1992-11-27 | 1992-11-27 | Manufacturing method of composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31856992A JP3182939B2 (en) | 1992-11-27 | 1992-11-27 | Manufacturing method of composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06158197A JPH06158197A (en) | 1994-06-07 |
| JP3182939B2 true JP3182939B2 (en) | 2001-07-03 |
Family
ID=18100603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31856992A Expired - Fee Related JP3182939B2 (en) | 1992-11-27 | 1992-11-27 | Manufacturing method of composite material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3182939B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6245425B1 (en) | 1995-06-21 | 2001-06-12 | 3M Innovative Properties Company | Fiber reinforced aluminum matrix composite wire |
| US6329056B1 (en) | 2000-07-14 | 2001-12-11 | 3M Innovative Properties Company | Metal matrix composite wires, cables, and method |
| US6344270B1 (en) | 2000-07-14 | 2002-02-05 | 3M Innovative Properties Company | Metal matrix composite wires, cables, and method |
| US6485796B1 (en) | 2000-07-14 | 2002-11-26 | 3M Innovative Properties Company | Method of making metal matrix composites |
| US6559385B1 (en) * | 2000-07-14 | 2003-05-06 | 3M Innovative Properties Company | Stranded cable and method of making |
| JP3710048B2 (en) | 2000-08-29 | 2005-10-26 | 矢崎総業株式会社 | Pressure impregnation device for impregnating metal into fiber bundle |
| JP4798614B2 (en) * | 2006-04-28 | 2011-10-19 | コーア株式会社 | Resistor |
| JP4798615B2 (en) * | 2006-04-28 | 2011-10-19 | コーア株式会社 | Resistor |
-
1992
- 1992-11-27 JP JP31856992A patent/JP3182939B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06158197A (en) | 1994-06-07 |
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