JPH03110045A - Metallic fiber having bulging part and production thereof - Google Patents
Metallic fiber having bulging part and production thereofInfo
- Publication number
- JPH03110045A JPH03110045A JP24679989A JP24679989A JPH03110045A JP H03110045 A JPH03110045 A JP H03110045A JP 24679989 A JP24679989 A JP 24679989A JP 24679989 A JP24679989 A JP 24679989A JP H03110045 A JPH03110045 A JP H03110045A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- metallic fiber
- fiber
- metal
- fibers
- 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 7
- 229920000914 Metallic fiber Polymers 0.000 title abstract 7
- 239000002184 metal Substances 0.000 claims abstract description 64
- 229910052751 metal Inorganic materials 0.000 claims abstract description 64
- 239000000835 fiber Substances 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 239000011148 porous material Substances 0.000 claims description 11
- 239000000956 alloy Substances 0.000 abstract description 5
- 229910045601 alloy Inorganic materials 0.000 abstract description 5
- 238000002347 injection Methods 0.000 abstract description 5
- 239000007924 injection Substances 0.000 abstract description 5
- 239000011159 matrix material Substances 0.000 abstract description 5
- 238000009987 spinning Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 239000012779 reinforcing material Substances 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract description 3
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 239000007769 metal material Substances 0.000 abstract description 2
- 238000002074 melt spinning Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910017082 Fe-Si Inorganic materials 0.000 description 1
- 229910017133 Fe—Si Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
Landscapes
- Continuous Casting (AREA)
- Inorganic Fibers (AREA)
Abstract
Description
【発明の詳細な説明】
［ａ業上の利用分野］
本発明は繊維長手方向の適所にふくらみ部を有する金属
繊維およびその製造方法に関するものである。本発明に
よりて提供される金属繊維は、現在金属繊維が使用され
ているほとんどの分野で使用できるが、特に金属繊維同
士あるいは金属繊維とマトリックス間の物理的結合力の
必要な分野に適している。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a metal fiber having bulges at appropriate locations in the longitudinal direction of the fiber, and a method for producing the same. The metal fibers provided by the present invention can be used in most fields where metal fibers are currently used, but are particularly suitable for fields that require physical bonding strength between metal fibers or between metal fibers and a matrix. .
［従来の技術］
金属繊維を製造する方法としては、ダイスを用いて順次
細くする線引法、工具を用いて削り出してゆく切削法、
溶融金属を細孔より吐出させた後急冷凝固する溶融紡糸
法などが知られている。従来これらの方法は、一般的傾
向に従って均質繊維を製造することを目的として実施さ
れていたため、得られた金属繊維は断面積の変動の少な
い比較的平滑な表面からなる金属繊維であった。[Prior art] Methods for manufacturing metal fibers include a drawing method in which the fibers are gradually thinned using dies, a cutting method in which the fibers are cut out using a tool,
Melt spinning methods are known in which molten metal is discharged from pores and then rapidly solidified. Conventionally, these methods have been carried out with the aim of producing homogeneous fibers according to general trends, and the resulting metal fibers have relatively smooth surfaces with little variation in cross-sectional area.
［発明が解決しようとする課題］
従来技術によって得られた断面積変動の少ない平滑な金
属繊維は金属繊維同士を絡ませたとき、あるいは金属繊
維をマトリックス中に分散させたときの相互の係合ポイ
ントが少なく、従って物理的結合力が弱いため、該金属
繊維を短繊維として例えばマット等に使用する場合には
、す抜けを生じ易いという欠点があり、また複合材料の
強化材として使用する場合には金属繊維とマトリックス
との界面ですべりが生じやすく強化材としての効果が十
分に発揮されないという欠点がある。[Problem to be solved by the invention] Smooth metal fibers with little variation in cross-sectional area obtained by the prior art have mutual engagement points when the metal fibers are entangled with each other or when the metal fibers are dispersed in a matrix. Therefore, when the metal fibers are used as short fibers in mats, etc., they tend to slip through easily, and when used as reinforcing materials in composite materials, has the disadvantage that it tends to slip at the interface between the metal fibers and the matrix, making it less effective as a reinforcing material.
［課題を解決するための手段］
本発明に係る金属繊維は全長に亘って同一組成からなる
金属繊維であって、該金属繊維の適所にふくらみ部を有
する点に要旨がある。また本発明の上記金属繊維は、細
孔より吐出された溶融金属流が凝固する以前に該溶融金
属流の適所の直径を変動させてふくらみ部を形成するこ
とによって製造することができる。[Means for Solving the Problems] The metal fiber according to the present invention is a metal fiber having the same composition over its entire length, and has bulges at appropriate locations. Further, the metal fiber of the present invention can be manufactured by varying the diameter of a molten metal stream at an appropriate point to form a bulge before the molten metal stream discharged from the pores solidifies.
［作用コ
本発明の金属繊維におけるふくらみ部の形状は格別限定
されるものではないが、もつとも一般的には水玉状を呈
し、ふくらみ部の最大直径（Ｄａ）とふくらみを有しな
い通常部分の直径（ｏｂ）との比Ｄａ／Ｄｂも特に限定
されないが、好ましいのは１．１〜２０の範囲であり、
ふくらみ部の存在ピッチについても制約を受けないが、
例えば２００００Ｄｂで定義される長さ内に少なくとも
１個以上のふくらみ部を有することが好ましい。[Function] Although the shape of the bulge in the metal fiber of the present invention is not particularly limited, it generally exhibits a polka dot shape, and the maximum diameter (Da) of the bulge and the diameter of the normal portion without a bulge The ratio Da/Db with (ob) is also not particularly limited, but is preferably in the range of 1.1 to 20,
There are no restrictions on the pitch at which the bulge exists, but
For example, it is preferable to have at least one bulge within a length defined by 20,000 Db.
Ｄａ／Ｄｂが１．１未満では繊維外観が平滑になって物
理的結合力が弱くなり、Ｄａ／Ｄｂが２０を超えると物
理的結合力は良くなるものの、積層体や不織布等に使用
する場合にふくらみ部が大きすぎて成形性が悪くなる傾
向を示し、また製品外観の面でもあまり良いものは得ら
れない。また２００００Ｄｂで定義される繊維長さ内に
少なくとも１個以上のふくらみ艇がないと物理的結合力
は不十分となる。When Da/Db is less than 1.1, the fiber appearance becomes smooth and the physical bonding strength becomes weak, and when Da/Db exceeds 20, the physical bonding strength improves, but when used in laminates, nonwoven fabrics, etc. The bulges tend to be too large, resulting in poor moldability, and the appearance of the product is also not very good. Moreover, if there is not at least one inflatable boat within the fiber length defined by 20,000 Db, the physical bonding force will be insufficient.
また本発明の金属繊維を構成する金属材料は用途に応じ
て適正なものを選択すれば良く、例えばＦｅ、Ａ１．Ｃ
ｕ等、或はこれらの合金が使用される。また鉄系合金に
おけるＦｅの含有量は、強度などの機械的性質からの要
求、更には電磁波シールド材料や磁気シールド材料のフ
ィラー用途に使用する場合には、磁気的性質からの要求
を考慮して、Ｆｅを７５％以上の割合で含有することが
好ましい。Further, the metal material constituting the metal fiber of the present invention may be appropriately selected depending on the application, such as Fe, A1. C
u, etc., or alloys thereof are used. In addition, the Fe content in iron-based alloys is determined based on mechanical properties such as strength, and when used as a filler for electromagnetic shielding materials or magnetic shielding materials, taking into consideration magnetic properties. , Fe is preferably contained in a proportion of 75% or more.
次に、ふくらみ部を有する金属繊維の製造方法について
説明する。Next, a method for manufacturing a metal fiber having a bulge will be described.
本発明のようなふくらみ部を有する金属繊維を製造する
には、前記溶融紡糸法を改良して実施することが好まし
い。すなわち、通常の溶融紡糸法では、溶融金属を細孔
から一定流速に保ちつつ噴射し、溶融金属流の直径が一
定である内に急冷凝固させて均一な直径の金属繊維を製
造するが、本発明の金属繊維の場合は溶融金属を凝固さ
せる以前に溶融金属流の直径を変動させることによって
製造することができる。In order to produce metal fibers having bulges as in the present invention, it is preferable to improve the melt spinning method. In other words, in the usual melt spinning method, molten metal is injected through pores while maintaining a constant flow rate, and the molten metal flow is rapidly solidified while the diameter remains constant to produce metal fibers with a uniform diameter. The metal fibers of the invention can be produced by varying the diameter of the molten metal stream before solidifying the molten metal.
直径を変動させる手段としては種々考えられるが、次に
２例を非限定的に示す。Although various means for varying the diameter can be considered, two non-limiting examples will be shown below.
（１）回転するドラム内に遠心力で形成した水層中に、
溶融金属を噴射して金属繊維を製造する方法（第２図参
照）：
噴射圧を下げて２．０〜１０．０ｋｇ／ｃｍ２とし、ド
ラムの回転によって生じる水層の表面速度が通常の溶融
紡糸法における溶融金属流の吐出速度より１．２倍以上
に速くなる様にドラムの回転速度を調節すると、溶融金
属流は水層表面上で跳ねるような挙動を示し脈流を生じ
、この過程でふくらみ部を形成し、次いで急冷凝固され
る。(1) In the water layer formed by centrifugal force inside the rotating drum,
A method of producing metal fibers by injecting molten metal (see Figure 2): The injection pressure is lowered to 2.0 to 10.0 kg/cm2, and the surface velocity of the water layer generated by the rotation of the drum is lower than that of normal melt spinning. When the rotation speed of the drum is adjusted to be 1.2 times faster than the discharge speed of the molten metal flow in the method, the molten metal flow behaves as if it bounces on the surface of the water layer, creating a pulsating flow, and in this process, A bulge is formed and then rapidly solidified.
（２）溶融金属を紡糸筒内に吐出させて金属繊維を製造
する方法（第１図参照）；
噴射圧を変動させて細孔より溶融金属を吐出させ金属繊
維を振り落とす。即ち、噴射圧を変動させると溶融金属
流が脈動状態となり、ふくらみ部が形成される。(2) A method for producing metal fibers by discharging molten metal into a spinning tube (see Figure 1); Varying the injection pressure, discharging molten metal from pores and shaking off metal fibers. That is, when the injection pressure is varied, the molten metal flow becomes pulsating, and a bulge is formed.
［実施例コ
実施例Ｉ
Ｓｉ：８．０重量％、残部がＦｅと不可避不純物からな
るＦｅ−Ｓｉ合金を、底部に直径０．０６ｍｍの細孔を
有するセラミック製容器内で高周波加熱により１４６０
℃まで加熱して溶融させた後、平均圧力が２．５ｋｇ／
ｃｍ”のアルゴンガス加圧下で平均圧力±０．５ｋｇ／
ｃｍ’の範囲内で１秒間に３〜１０回変動させ細孔部よ
り１０℃の雰囲気下にある紡糸筒に吐出させて、銅製の
冷却板上に振り落としたところ、溶融金属流は細孔のノ
ズル下０．５〜１５ｃ＋ａの間で脈流を生じ、ふくらみ
部を有すると共に適宜長さで切断された金属繊維となっ
た。[Example Example I A Fe-Si alloy consisting of 8.0% by weight of Si and the balance being Fe and unavoidable impurities was heated to 1460% by high frequency heating in a ceramic container having pores with a diameter of 0.06 mm at the bottom.
After heating to ℃ and melting, the average pressure is 2.5 kg/
cm” under argon gas pressure, average pressure ±0.5 kg/
When the molten metal flow was fluctuated 3 to 10 times per second within the range of 10 cm' and discharged from the pores into a spinning tube in an atmosphere of 10°C, it was shaken off onto a copper cooling plate. A pulsating flow was generated between 0.5 and 15c+a below the nozzle, and the metal fiber had a bulge and was cut to an appropriate length.
このようにして得られた金属短繊維は、繊維長が１〜６
０ｃｍの範囲にあり、水玉状のふくらみ部の直径が８４
〜４２０μ口、ふくらみ部間の直径が５１〜７０μｍ、
ふくらみ部間の長さが０．５〜３０ｃｍの金属繊維であ
った。第３図は実施品の拡大図である。The short metal fibers obtained in this way have a fiber length of 1 to 6.
It is in the range of 0 cm, and the diameter of the polka dot-shaped bulge is 84 cm.
~420 μm mouth, diameter between bulges 51-70 μm,
The metal fiber had a length between bulges of 0.5 to 30 cm. FIG. 3 is an enlarged view of the actual product.
上記繊維を用いマット状製品を作成したところ、繊維の
す抜けが少ない製品が得られた。When a mat-like product was created using the above-mentioned fibers, a product with few fibers passing through was obtained.
実施例２
Ａ１：５．２重量％、Ｓｉ：２．７重量％、残部がＦｅ
と不可避不純物からなるＦｅ系合金を、底部に直径０．
０８ｍｍの細孔を有するセラミック製容器内で高周波加
熱により１５００℃まで加熱して溶融させた後、回転す
るドラム内に遠心力により形成した１５℃の水層中に、
３．０ｋｇ／ｃｍ２のアルゴンガス加圧下で細孔部と水
層表面との距離を３１１ＩＩ１１あけて細孔部より吐出
させた。このとき、水層の表面速度（ＶＷ ）と溶融金
属流の速度（ＶＪ ）との速度比Ｖｗ／Ｖａが１．２以
上になるようにドラムの回転速度を調整したところ、溶
融金属流は水層表面で脈流を生じ、ふくらみ部を有する
と共に適宜長さで切断された金属繊維となった。Example 2 A1: 5.2% by weight, Si: 2.7% by weight, balance Fe
A Fe-based alloy consisting of unavoidable impurities is placed at the bottom with a diameter of 0.
After melting by heating to 1500 °C by high frequency heating in a ceramic container with 08 mm pores, it is placed in a 15 °C water layer formed by centrifugal force in a rotating drum.
Under argon gas pressure of 3.0 kg/cm2, the water was discharged from the pores with a distance of 311II11 between the pores and the surface of the water layer. At this time, when the rotational speed of the drum was adjusted so that the speed ratio Vw/Va between the surface velocity of the water layer (VW) and the velocity of the molten metal flow (VJ) was 1.2 or more, the molten metal flow was Pulsating currents were generated on the surface of the layer, resulting in metal fibers that had bulges and were cut to appropriate lengths.
このようにして得られた繊維は繊維長が１〜３００ｃｍ
の範囲にあり、水玉状のふくらみ部の直径が９０〜３０
０μｍ、ふくらみ部間の直線状部の直径が６０〜８５μ
ｍ、ふくらみ部間の長さが０．５〜６０ｃｍの金属繊維
であった。The fibers obtained in this way have a fiber length of 1 to 300 cm.
The diameter of the polka dot-like bulge is between 90 and 30 mm.
0 μm, the diameter of the straight part between the bulges is 60 to 85 μm
m, the length between the bulges was 0.5 to 60 cm.
上記繊維を用いマット状製品を作成したところ、繊維の
す抜けが少ない製品が得られた。When a mat-like product was created using the above-mentioned fibers, a product with few fibers passing through was obtained.
［発明の効果〕
本発明は以上のように構成されており、繊維同士あるい
は繊維とマトリックス間の物理的結合力の強い金属繊維
を提供することができるようになった。本発明の金属繊
維をマット状製品等に使用した場合には金ａｍ 維のす
抜けが少ない安定した製品となり、複合材料の強化材と
して使用した場合には機械的性質の優れた複合材料とな
る。[Effects of the Invention] The present invention is configured as described above, and it has become possible to provide metal fibers with strong physical bonding strength between the fibers or between the fibers and the matrix. When the metal fibers of the present invention are used in mat-like products, etc., it becomes a stable product with few gold fibers falling through, and when used as a reinforcing material for composite materials, it becomes a composite material with excellent mechanical properties. .
第１図は実施例１に使用した溶融紡糸装置の断面図、第
２図は実施例２に使用した溶融紡糸装置の断面図、第３
図は本発明によって得られた金属繊維の拡大図である。
１・・・ガス
３・・・るつぼ
５・・・細孔
７・・・金属繊維
９・・・冷却液面
１１・・・回転ドラム
１３・・・モーター
２・・・ガス圧変動装置
４・・・誘導コイル
６・・・溶融金属流
８・・・紡糸筒
１０・・・冷却液体
１２・・・ベルト
第
図
第３図
第２図
１Figure 1 is a cross-sectional view of the melt-spinning apparatus used in Example 1, Figure 2 is a cross-sectional view of the melt-spinning apparatus used in Example 2, and Figure 3 is a cross-sectional view of the melt-spinning apparatus used in Example 2.
The figure is an enlarged view of the metal fiber obtained by the present invention. 1... Gas 3... Crucible 5... Pore 7... Metal fiber 9... Cooling liquid level 11... Rotating drum 13... Motor 2... Gas pressure fluctuation device 4. ... Induction coil 6 ... Molten metal flow 8 ... Spinning tube 10 ... Cooling liquid 12 ... Belt Fig. 3 Fig. 2 Fig. 1
Claims (2)
、該金属繊維の適所にふくらみ部を有することを特徴と
するふくらみ部を有する金属繊維。(1) A metal fiber having a bulge, which is a metal fiber having the same composition over its entire length, and has a bulge at a proper location of the metal fiber.
金属繊維の製造方法において、溶融金属流が凝固する以
前に溶融金属流の適所の直径を変動させて、請求項（１
）記載の金属繊維を製造することを特徴とするふくらみ
部を有する金属繊維の製造方法。(2) In a method for producing metal fibers in which molten metal is discharged from pores and solidified to form fibers, the diameter of the molten metal flow at an appropriate point is varied before the molten metal flow solidifies.
) A method for producing a metal fiber having a bulge, the method comprising producing the metal fiber according to the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24679989A JPH03110045A (en) | 1989-09-21 | 1989-09-21 | Metallic fiber having bulging part and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24679989A JPH03110045A (en) | 1989-09-21 | 1989-09-21 | Metallic fiber having bulging part and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03110045A true JPH03110045A (en) | 1991-05-10 |
Family
ID=17153852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24679989A Pending JPH03110045A (en) | 1989-09-21 | 1989-09-21 | Metallic fiber having bulging part and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03110045A (en) |
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|---|---|---|---|---|
| CN102717088A (en) * | 2012-07-02 | 2012-10-10 | 王金华 | Method for preparing aluminum fiber material |
| WO2014103202A1 (en) * | 2012-12-27 | 2014-07-03 | 三菱マテリアル株式会社 | Porous aluminum body and manufacturing method therefor |
| CN106102966A (en) * | 2014-05-16 | 2016-11-09 | 三菱综合材料株式会社 | Porous aluminum sintered body and the manufacture method of porous aluminum sintered body |
| CN106662409A (en) * | 2014-07-02 | 2017-05-10 | 三菱综合材料株式会社 | Porous aluminum heat exchange member |
| US10543531B2 (en) | 2014-10-30 | 2020-01-28 | Mitsubishi Materials Corporation | Porous aluminum sintered material and method of producing porous aluminum sintered material |
| US10981228B2 (en) | 2014-05-16 | 2021-04-20 | Mitsubishi Materials Corporation | Porous aluminum sintered compact and method of producing porous aluminum sintered compact |
| US10981230B2 (en) | 2014-05-30 | 2021-04-20 | Mitsubishi Materials Corporation | Porous aluminum complex and method of producing porous aluminum complex |
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1989
- 1989-09-21 JP JP24679989A patent/JPH03110045A/en active Pending
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| US9764385B2 (en) | 2012-12-27 | 2017-09-19 | Mitsubishi Materials Corporation | Porous aluminum body and manufacturing method therefor |
| JP2014141733A (en) * | 2012-12-27 | 2014-08-07 | Mitsubishi Materials Corp | Aluminum porous body and production method thereof |
| CN104797361A (en) * | 2012-12-27 | 2015-07-22 | 三菱综合材料株式会社 | Porous aluminum body and manufacturing method therefor |
| WO2014103202A1 (en) * | 2012-12-27 | 2014-07-03 | 三菱マテリアル株式会社 | Porous aluminum body and manufacturing method therefor |
| EP2939762B1 (en) * | 2012-12-27 | 2019-02-06 | Mitsubishi Materials Corporation | Porous aluminum body and manufacturing method therefor |
| CN106102966A (en) * | 2014-05-16 | 2016-11-09 | 三菱综合材料株式会社 | Porous aluminum sintered body and the manufacture method of porous aluminum sintered body |
| US10478895B2 (en) | 2014-05-16 | 2019-11-19 | Mitsubishi Materials Corporation | Porous aluminum sintered compact and method of producing porous aluminum sintered compact |
| US10981228B2 (en) | 2014-05-16 | 2021-04-20 | Mitsubishi Materials Corporation | Porous aluminum sintered compact and method of producing porous aluminum sintered compact |
| US10981230B2 (en) | 2014-05-30 | 2021-04-20 | Mitsubishi Materials Corporation | Porous aluminum complex and method of producing porous aluminum complex |
| CN106662409A (en) * | 2014-07-02 | 2017-05-10 | 三菱综合材料株式会社 | Porous aluminum heat exchange member |
| US10598446B2 (en) | 2014-07-02 | 2020-03-24 | Mitsubishi Materials Corporation | Porous aluminum heat exchange member |
| CN106662409B (en) * | 2014-07-02 | 2020-10-20 | 三菱综合材料株式会社 | Porous aluminothermic exchange member |
| US10543531B2 (en) | 2014-10-30 | 2020-01-28 | Mitsubishi Materials Corporation | Porous aluminum sintered material and method of producing porous aluminum sintered material |
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