JP3144080B2 - Nozzle for spinning metal fiber - Google Patents
Nozzle for spinning metal fiberInfo
- Publication number
- JP3144080B2 JP3144080B2 JP04232956A JP23295692A JP3144080B2 JP 3144080 B2 JP3144080 B2 JP 3144080B2 JP 04232956 A JP04232956 A JP 04232956A JP 23295692 A JP23295692 A JP 23295692A JP 3144080 B2 JP3144080 B2 JP 3144080B2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- metal
- molten metal
- temperature
- spinning
- 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
Links
- 229910052751 metal Inorganic materials 0.000 title claims description 64
- 239000002184 metal Substances 0.000 title claims description 64
- 239000000835 fiber Substances 0.000 title claims description 29
- 238000009987 spinning Methods 0.000 title claims description 17
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 239000011733 molybdenum Substances 0.000 claims description 5
- 229910052697 platinum Inorganic materials 0.000 claims description 5
- 229910052715 tantalum Inorganic materials 0.000 claims description 5
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052721 tungsten Inorganic materials 0.000 claims description 5
- 239000010937 tungsten Substances 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 4
- 238000002074 melt spinning Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- LTPBRCUWZOMYOC-UHFFFAOYSA-N Beryllium oxide Chemical compound O=[Be] LTPBRCUWZOMYOC-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- -1 alumina Chemical class 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は金属繊維を溶融紡糸法に
よつて、安全に、安定して紡糸することの可能な金属繊
維紡糸用ノズルに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal fiber spinning nozzle capable of spinning metal fibers safely and stably by a melt spinning method.
【０００２】[0002]
【従来の技術】従来直径の小さい金属繊維を製造する場
合、通常はダイスを通過させて直径を減少させ、ダイス
通過の回数を数多く繰返すことによつて目的とする線径
の小さい金属繊維を製造するのが一般であつた。しかし
ながら上記の方法は工数が多く掛り、従つて最終製品の
コストが高くつくことから、更に安価に線径の小さい金
属繊維を製造する方法が検討され、金属繊維が溶融紡糸
法によつて製造されるようになつた。（特開平３−2075
58号）2. Description of the Related Art Conventionally, when producing a metal fiber having a small diameter, usually, the diameter is reduced by passing through a die, and the number of times of passing through the die is repeated many times to produce a metal fiber having a small diameter. It was common to do. However, the above-mentioned method requires a lot of man-hours, and accordingly, the cost of the final product is high. Therefore, a method for producing a metal fiber having a small wire diameter at a lower cost has been studied, and the metal fiber is produced by a melt spinning method. I came to. (JP-A-3-2075
No. 58)
【０００３】本発明は前記の発明とは全く異なり、簡単
な紡糸用ノズルを使用して、金属繊維を連続的に安定し
て安全に製造する方法を提供するものである。既に本出
願人は、金属細繊維を溶融紡糸法によつて製造すること
を多年研究した結果、溶融金属を長手方向に断面積の変
動の小さい均一な連続繊維にして、且つ結晶配向の揃つ
た構造を有する連続金属繊維を製造する方法及び装置を
完成した。即ち溶融金属をオリフイスから気体冷却筒に
ジエツト噴射し、該気体冷却筒で噴射された金属を凝固
させ、ついで凝固して得られた金属繊維を回転ドラム内
に巻き取る金属繊維の製造方法とその製造装置に関する
ものである。（特開平３−243246号）[0003] The present invention is completely different from the above-mentioned invention, and provides a method for producing metal fibers continuously and stably and safely using a simple spinning nozzle. The applicant has already studied for many years the production of fine metal fibers by the melt-spinning method, and as a result, the molten metal has been made into continuous fibers having a small variation in cross-sectional area in the longitudinal direction and uniform in crystal orientation. A method and an apparatus for producing a continuous metal fiber having a structure have been completed. That is, a method of manufacturing a metal fiber by jetting molten metal from an orifice to a gas cooling cylinder, solidifying the metal injected by the gas cooling cylinder, and then winding the metal fiber obtained by solidification in a rotating drum, and The present invention relates to a manufacturing apparatus. (JP-A-3-243246)
【０００４】[0004]
【発明が解決しようとする課題】しかしながら上記本出
願人の発明になる金属繊維の溶融紡糸法における最大の
問題点は該金属繊維紡糸装置におけるノズルにあること
が本発明者の検討結果によつて判明した。例えば金属繊
維特に直径が100 μ以下のスチ−ル繊維を製造する場
合、 溶融紡糸温度を1500℃の高温度に保持しないと溶融
金属の粘度が高すぎて断面真円の金属繊維を製造するこ
とが著しく困難であるという問題点がある。However, the present inventors have found that the biggest problem in the melt spinning method of metal fibers according to the present invention lies in the nozzle of the metal fiber spinning apparatus. found. For example, when manufacturing metal fibers, especially steel fibers with a diameter of 100μ or less, unless the melt spinning temperature is maintained at a high temperature of 1500 ° C, the viscosity of the molten metal is too high to produce metal fibers with a perfect circular cross section. Is extremely difficult.
【０００５】ところが溶融紡糸温度を1500℃以上まで上
げると、溶融金属が接触しているセラミツクスノズルプ
レ−トと反応あるいは空気により表面酸化が起り、ノズ
ル詰りが生じ、ついに均一な金属繊維の紡糸が困難にな
る恐れがある。あるいは上記のように溶融金属を高温で
加熱溶融すると溶融金属をノズルから噴射時、ノズル温
度の急変により、該ノズルが破損する恐れがあり危険を
伴うので、通常は上記したような1500℃以上の高温では
金属の溶融紡糸は行われていない。そのために前記した
ように断面真円の金属繊維を安定して紡糸することは著
しく困難であつた。However, when the melt spinning temperature is raised to 1500 ° C. or higher, the molten metal reacts with the ceramic nozzle plate with which the molten metal is in contact or the surface is oxidized by air, causing nozzle clogging, and finally uniform metal fiber spinning. It can be difficult. Alternatively, when the molten metal is heated and melted at a high temperature as described above, when the molten metal is sprayed from the nozzle, a sudden change in the nozzle temperature may cause damage to the nozzle, which is dangerous. At high temperatures, no melt spinning of the metal takes place. Therefore, as described above, it is extremely difficult to stably spin a metal fiber having a perfectly circular cross section.
【０００６】上記に鑑み、本発明は上記の種々な問題点
を解決するために、金属の溶融温度を出来るだけ高くし
て溶融合金の粘度を下げ、且つノズルの詰りやノズルの
破損を防止し、金属繊維を安定に製造するための紡糸用
ノズルを提供することを目的とするものである。。In view of the above, the present invention has been made to solve the above various problems by increasing the melting temperature of the metal as much as possible to reduce the viscosity of the molten alloy and to prevent nozzle clogging and nozzle damage. It is another object of the present invention to provide a spinning nozzle for stably producing metal fibers. .
【０００７】[0007]
【課題を解決するための手段】前記の問題点を解決して
上記の目的を達成するために、本発明は少なくとも２種
のセラミツクスからなるプレ−トを積層して構成された
ノズルからなり、該少なくとも２種のセラミツクスプレ
−ト間にグラフアイト、モリブデン、タングステン、白
金、タンタル等の高融点物質をプレ−トヒ−タ−且つパ
ツキング材として挿入せしめてなる金属繊維紡糸用ノズ
ルに関するもので、特にグラフアイトはプレ−トヒ−タ
−及びパツキング材として好適である。SUMMARY OF THE INVENTION In order to solve the above problems and achieve the above object, the present invention comprises a nozzle formed by stacking at least two types of ceramic plates. The present invention relates to a metal fiber spinning nozzle in which a high melting point material such as graphite, molybdenum, tungsten, platinum, tantalum or the like is inserted as a plate heater and a packing material between the at least two kinds of ceramic plates. In particular, graphite is suitable as a plate heater and a packing material.
【０００８】次に図面によつて本発明を説明する。〔図
１〕は前記本出願人の特開平３−243246号発明の金属繊
維紡糸装置に使用されている溶融金属を貯えておく槽
(1) を備えた紡糸装置の吐出部分の一実施例の概略断面
図である。溶融金属(1) は高周波誘導コイル(5) により
ルツボ(2) 中で溶融状態にあり、圧力(P) をルツボの上
部(4) にかけることにより、吐出部(3) から吐出され
る。〔図１〕のような構造のルツボを使用する場合には
ルツボ(2) 自身の材質を検討する必要がある。即ちルツ
ボ内の溶融金属と接触する部分と非接触部分との温度差
のヒ−トシヨツクによりルツボ(2) が破損する恐れがあ
る。またルツボの側壁自身に噴射ガスの圧力がかかるた
め高温での強度も必要である。更に直径100 μ以下の金
属繊維を作成したい場合にはルツボへの吐出部の加工が
困難である。一般的には石英パイプを熱変形させること
により吐出部の加工を行い、ルツボとして使用されてい
る。Next, the present invention will be described with reference to the drawings. FIG. 1 shows a tank for storing the molten metal used in the metal fiber spinning apparatus of the present invention disclosed in Japanese Patent Application Laid-Open No. 3-243246.
FIG. 2 is a schematic cross-sectional view of one embodiment of a discharge portion of a spinning device provided with (1). The molten metal (1) is in a molten state in the crucible (2) by the high-frequency induction coil (5), and is discharged from the discharge portion (3) by applying a pressure (P) to the upper part (4) of the crucible. When a crucible having the structure shown in FIG. 1 is used, it is necessary to consider the material of the crucible (2) itself. That is, there is a possibility that the crucible (2) may be damaged due to heat shock of the temperature difference between the portion in contact with the molten metal and the non-contact portion in the crucible. Further, since the pressure of the injection gas is applied to the side wall of the crucible itself, strength at a high temperature is also required. Further, when it is desired to produce a metal fiber having a diameter of 100 μ or less, it is difficult to process the discharge portion into a crucible. Generally, the discharge portion is processed by thermally deforming a quartz pipe, and is used as a crucible.
【０００９】〔図２〕は本発明に使用される金属繊維紡
糸用ノズルに使用されるノズル部分の材質を示した一実
施例の概略断面図である。即ち〔図２〕に示すようにノ
ズル部分は２種のセラミツクス系材質(A),(B) からなる
プレ−トを溶融金属の流れ方向に対して垂直の方向に積
層して構成されている。この場合プレ−ト(A) は溶融金
属との反応性の小さいアルミナ、マグネシア、カルシ
ア、ベリリア等の金属酸化物から選ばれた１種を主成分
とするものが好ましい。またプレ−ト(B) はプレ−ト
(A) の支持用プレ−トとして高温での強度の大きい窒化
ケイ素又は窒化アルミニウム等が好適に使用される。FIG. 2 is a schematic sectional view of one embodiment showing a material of a nozzle portion used for a metal fiber spinning nozzle used in the present invention. That is, as shown in FIG. 2, the nozzle portion is formed by laminating plates made of two types of ceramic materials (A) and (B) in a direction perpendicular to the flow direction of the molten metal. . In this case, it is preferable that the plate (A) contains, as a main component, one selected from metal oxides such as alumina, magnesia, calcia and beryllia having low reactivity with the molten metal. Plate (B) is a plate
As the support plate (A), silicon nitride or aluminum nitride having high strength at high temperatures is preferably used.
【００１０】上記のようなノズルを使用して溶融金属の
紡糸を行う場合、問題とするのは溶融金属とノズルプレ
−ト(A) との高温での反応もしくは溶融金属の空気酸化
によるノズル詰りの問題である。溶融金属は、その種に
よつても異なるが1500℃以上の高温にまで上げないと粘
度が高く、安定して溶融紡糸ができない恐れがある。し
かしながら高温になるほど、金属の活性が高くなり、ノ
ズルプレ−トとの反応物が生成する。一般的にはこれら
の反応物もしくは高温において生成する金属自身の酸化
物の融点は溶融金属の温度に比較して20〜50℃程度高い
ため、金属を融点以上に保つていても上記の反応物や金
属の酸化物がノズルを詰らせることがあり、噴射不可能
になることが多い。またノズルブレ−トは溶融金属との
接触面から垂直方向に熱伝導により伝熱するが、ノズル
の先端においては、大気中への放熱により温度が下がる
ため反応物もしくは酸化物の生成を促進させることがあ
る。更にはノズルプレ−ト(A) は溶融金属との反応を防
ぐため、緻密質のセラミツクスが使用されることが多
く、少しの温度差でヒ−トシヨツクを生じるため、溶融
金属との接触面と非接触面との温度差により破損する場
合が多い。When the molten metal is spun using the above-described nozzle, the problem is the reaction of the molten metal with the nozzle plate (A) at a high temperature or the clogging of the nozzle due to the air oxidation of the molten metal. It is a problem. Molten metal varies depending on the type, but unless heated to a high temperature of 1500 ° C. or higher, the viscosity is high, and there is a possibility that melt spinning cannot be performed stably. However, the higher the temperature, the higher the activity of the metal and a reaction product with the nozzle plate is generated. Generally, the melting point of these reactants or the oxides of the metals themselves formed at high temperatures is about 20 to 50 ° C. higher than the temperature of the molten metal. In some cases, the nozzle may be clogged by metal or metal oxides, making it impossible to jet. In addition, the nozzle blade transmits heat vertically from the contact surface with the molten metal by heat conduction, but at the tip of the nozzle, the temperature is reduced by heat radiation to the atmosphere, so that the formation of reactants or oxides is promoted. There is. Further, in the nozzle plate (A), dense ceramics are often used in order to prevent a reaction with the molten metal, and a slight temperature difference causes a heat shock, so that a contact surface with the molten metal is not formed. It is often damaged by the temperature difference from the contact surface.
【００１１】上記の状況に鑑み、本発明者は溶融金属か
ら金属繊維を紡糸するノズルに関して、鋭意研究した結
果遂に前記した本発明の金属繊維用ノズルに到達するに
至つたもので、そのノズルの構成の一実施例の断面図を
〔図３〕に示した。In view of the above situation, the present inventor has conducted intensive studies on a nozzle for spinning metal fibers from molten metal, and has finally reached the above-described metal fiber nozzle of the present invention. FIG. 3 shows a sectional view of one embodiment of the configuration.
【００１２】上記したノズル詰りを回避し安全紡糸を行
うためにはノズルプレ−ト先端温度を溶融金属の温度以
上に加熱する必要がある。そのため本発明においては、
〔図３〕に示すようにノズルプレ−ト(A) とノズルプレ
−ト(B) との間隙にノズルプレ−ト(A) の下面に完全に
接触するように作成された厚さ0.5 〜５mmよりなるグラ
フアイト、モリブデン、タングステン、白金、タンタル
等の円輪状の高融点自己誘導発熱体(C) を挿入せしめる
ことによつてノズルプレ−ト(A) 下面をこの面状ヒ−タ
−により加熱するノズル構成となした。この構成を取ら
しめることによつて、面ヒ−タ−(C) は自己誘導発熱す
るため、ノズルプレ−ト(A) 下面は溶融金属の温度と同
等かあるいはそれ以上となり、ノズルプレ−ト先端の反
応物もしくは酸化物の生成を防止することになり、安定
した紡糸が可能になる。またノズルプレ−ト(A) の垂直
方向に発生する温度差を緩和させる作用があるため、ヒ
−トシヨツクによる破損の防止ともなる。更には、面ヒ
−タ−(C) は通常の電熱ヒ−タ−と異なり上記したよう
に自己誘導発熱するものであるからリ−ド線等も不要で
あり、装置的にも極めて簡便になり、使いやすく有用で
ある。In order to avoid the above-described nozzle clogging and perform safe spinning, it is necessary to heat the tip of the nozzle plate to a temperature higher than the temperature of the molten metal. Therefore, in the present invention,
As shown in FIG. 3, the gap between the nozzle plate (A) and the nozzle plate (B) has a thickness of 0.5 to 5 mm formed so as to completely contact the lower surface of the nozzle plate (A). A nozzle for heating the lower surface of the nozzle plate (A) by using a sheet heater by inserting a ring-shaped high melting point self-induction heating element (C) such as graphite, molybdenum, tungsten, platinum, tantalum, etc. Configuration. By adopting this configuration, the surface heater (C) generates self-induced heat, so that the lower surface of the nozzle plate (A) is equal to or higher than the temperature of the molten metal, and The formation of reactants or oxides is prevented, and stable spinning becomes possible. In addition, since the nozzle plate (A) has an effect of reducing a temperature difference generated in the vertical direction, damage due to heat shock can be prevented. Further, the surface heater (C) generates self-induced heat as described above, unlike a normal electric heater, so that a lead wire or the like is not required, and the apparatus is extremely simple. It is easy to use and useful.
【００１３】[0013]
【実施例】次に実施例により本発明を説明する。 〔実施例１〕 〔図３〕に示したようなノズルを使用
し、市販の鉄を誘導加熱で溶融した。ノズルプレ−ト
(A) には、口径100 μの細孔をもつ緻密質アルミナプレ
−トを、ノズルプレ−ト(B) には、 緻密質窒化ケイ素プ
レ−トを使用した。面ヒ−タ−(C) には、厚み１mmのモ
リブデンからなる円輪を挿入し、ルツボ内に20kg/cm2の
アルゴンガスで加圧して溶融金属を15分間ノズルより吐
出させた。吐出した溶融金属流体は、ノズル付近におい
て連続した流体として吐出していることを確認した。ま
た温度の測定を実施したところ、ルツボ内の溶融金属の
温度が1500℃であるのに対し、ノズルプレ−ト(A) 下面
の温度は1550℃となり上面と下面で温度が逆転している
ことを確認した。吐出後もノズルは破損することもなく
もとの形状を保つていた。Next, the present invention will be described by way of examples. Example 1 Using a nozzle as shown in FIG. 3, commercially available iron was melted by induction heating. Nozzle plate
For (A), a dense alumina plate having pores having a diameter of 100 μm was used, and for a nozzle plate (B), a dense silicon nitride plate was used. A circular ring made of molybdenum having a thickness of 1 mm was inserted into the surface heater (C), and the molten metal was discharged from the nozzle for 15 minutes by pressurizing the crucible with 20 kg / cm 2 of argon gas. It was confirmed that the discharged molten metal fluid was discharged as a continuous fluid near the nozzle. In addition, when the temperature was measured, the temperature of the molten metal in the crucible was 1500 ° C, whereas the temperature of the lower surface of the nozzle plate (A) was 1550 ° C, and the temperature was inverted between the upper and lower surfaces. confirmed. Even after the ejection, the nozzle maintained its original shape without being damaged.
【００１４】〔比較例１〕 〔図２〕に示したようなノ
ズルを使用し、市販の鉄を誘導加熱で溶融した。ノズル
プレ−トとしては、実施例と同様アルミナプレ−ト及び
窒化ケイ素プレ−トを使用した。溶融金属温度1600℃で
同様にして加圧したものの、金属流体は吐出後90秒で吐
出しなくなつた。吐出後ノズルプレ−トの先端部の観察
により金属の酸化層を確認した。またルツボ内の温度測
定を実施したところ、溶融金属の温度は1600℃であるに
もかかわらず、ノズルプレ−ト(A) 下面の温度はそれよ
り220 ℃低い1380℃であつた。Comparative Example 1 Commercially available iron was melted by induction heating using a nozzle as shown in FIG. As the nozzle plate, an alumina plate and a silicon nitride plate were used as in the example. Although the pressure was similarly increased at a molten metal temperature of 1600 ° C., the metal fluid stopped discharging 90 seconds after the discharge. After the discharge, the metal oxide layer was confirmed by observing the tip of the nozzle plate. When the temperature inside the crucible was measured, the temperature of the lower surface of the nozzle plate (A) was 1380 ° C, which was 220 ° C lower than that of the molten metal of 1600 ° C.
【００１５】[0015]
【発明の効果】本発明の効果を纏めると下記の通りであ
る。 (イ) 本発明により上下のノズルプレ−ト間に自己誘導発
熱体であるグラフアイト、モリブデン、タングステン、
白金、タンタル等の高融点を有する自己誘導発熱体をプ
レ−トヒ−タ−且つパツキング材として挿入せしめるこ
とにより、ノズルプレ−トの加熱が可能になり、溶融金
属の紡糸におけるノズル詰りがなく、安定して安全に断
面真円状の金属細線が容易に紡糸可能となつた。 (ロ) 更にノズルプレ−ト(A) と(B) との間に挿入される
プレ−ト(C) がグラフアイト、タングステン、白金、タ
ンタル等の高融点の自己誘導発熱体より構成されている
が故に、リ−ド線を必要とせず、装置的に極めて簡便で
且つ使い易い利点がある。The effects of the present invention are summarized as follows. (B) According to the present invention, graphite, molybdenum, tungsten, which is a self-induction heating element between the upper and lower nozzle plates,
By inserting a self-induction heating element having a high melting point, such as platinum or tantalum, as a plate heater and packing material, the nozzle plate can be heated, and there is no nozzle clogging during spinning of molten metal, and it is stable. As a result, a thin metal wire having a perfectly circular cross section can be easily spun. (B) Further, the plate (C) inserted between the nozzle plates (A) and (B) is composed of a high melting point self-induction heating element such as graphite, tungsten, platinum, and tantalum. Therefore, there is an advantage that a lead wire is not required and the device is extremely simple and easy to use.
【図１】従来公知の金属繊維紡糸装置の概略図。FIG. 1 is a schematic view of a conventionally known metal fiber spinning apparatus.
【図２】本発明に使用される２種のプレ−トよりなるノ
ズル部分の一実施例の概略断面図。FIG. 2 is a schematic sectional view of an embodiment of a nozzle portion composed of two types of plates used in the present invention.
【図３】本発明のノズルの一実施例の概略断面図。FIG. 3 is a schematic sectional view of an embodiment of the nozzle of the present invention.
１．溶融金属 ２．ルツボ ３．吐出部 ４．加圧部 ５．高周波誘導コイル Ａ，Ｂ．セラミツクスノズルプレ−ト Ｃ．面ヒ−タ− 1. Molten metal 2. Crucible 3. Discharge unit 4. Pressing part 5. High frequency induction coil A, B. C. Ceramic nozzle plate Surface heater
フロントページの続き (56)参考文献 特開 昭61−103650（ＪＰ，Ａ) 特開 昭59−42165（ＪＰ，Ａ) 特開 昭54−136536（ＪＰ，Ａ) 特開 昭60−177937（ＪＰ，Ａ) 特開 昭54−78326（ＪＰ，Ａ) 特開 平３−207558（ＪＰ，Ａ) 特開 平３−243246（ＪＰ，Ａ) 実開 昭61−122043（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B22D 11/06 380 B22D 11/06 360 Continuation of the front page (56) References JP-A-61-103650 (JP, A) JP-A-59-42165 (JP, A) JP-A-54-136536 (JP, A) JP-A-60-177937 (JP) JP-A-54-78326 (JP, A) JP-A-3-207558 (JP, A) JP-A-3-243246 (JP, A) JP-A-61-122043 (JP, U) (58) Field surveyed (Int. Cl. 7 , DB name) B22D 11/06 380 B22D 11/06 360
Claims (1)
るプレ−トを積層して構成されたノズルからなり、該プ
レ−ト間にグラフアイト、モリブデン、タングステン、
白金、タンタル等の高融点を有する物質をプレ−トヒ−
タ−且つパツキング材として挿入せしめてなることを特
徴とする金属繊維紡糸用ノズル。1. A nozzle comprising a stack of at least two kinds of ceramic plates, wherein graphite, molybdenum, tungsten,
Pre-heated materials having a high melting point such as platinum and tantalum
A metal fiber spinning nozzle, which is inserted as a tar and packing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04232956A JP3144080B2 (en) | 1992-08-07 | 1992-08-07 | Nozzle for spinning metal fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04232956A JP3144080B2 (en) | 1992-08-07 | 1992-08-07 | Nozzle for spinning metal fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0655247A JPH0655247A (en) | 1994-03-01 |
| JP3144080B2 true JP3144080B2 (en) | 2001-03-07 |
Family
ID=16947504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04232956A Expired - Fee Related JP3144080B2 (en) | 1992-08-07 | 1992-08-07 | Nozzle for spinning metal fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3144080B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3141320A1 (en) * | 2015-09-11 | 2017-03-15 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. | Apparatus and method of manufacturing metallic or inorganic fibers having a thickness in the micron range by melt spinning |
| CN105586649B (en) * | 2016-03-16 | 2017-11-10 | 武汉纺织大学 | A kind of preparation method of low-melting-point metal nanofiber |
| JP2021074750A (en) * | 2019-11-08 | 2021-05-20 | 大同特殊鋼株式会社 | Molten metal apparatus |
-
1992
- 1992-08-07 JP JP04232956A patent/JP3144080B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0655247A (en) | 1994-03-01 |
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