JPS6061147A - Method and device for producing continuously fine metallic wire - Google Patents

Abstract

PURPOSE:To enable continuous production of a fine metallic wire by injecting a molten metal jet to a stable liquid layer formed by the spiral motion approximately equal to rotating motion to cool quickly and solidify said metal and taking out the resulted fine metallic wire at the water path of the above-described liquid. CONSTITUTION:A liquid is supplied from a nozzle 14 to a water path 13 having parts 13a, 13b, 13c drawing a spiral orbit and the motion equal to rotating motion is applied to the liquid to act centrifugal force thereby forming a stable liquid layer. The jet flow 12 of a molten metal injected from a nozzle attached to the tip of a molten furnace system 11 toward the loop 13b is quickly cooled and solidified in the liquid layer traveling by drawing the rotating orbit together with the path 13. The resulted fine metallic wire is taken out at one end 13d of the water path and is taken off to a winder 15. The continuous production of the fine metallic wire with high productivity at a low working cost is thus made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for continuously manufacturing thin metal wires.

In recent years, a so-called rotating liquid spinning method has been proposed as a method for producing thin metal wires having a circular cross section from molten metal, and the technology is rapidly becoming established.

That is, JP-A-56-165016, JP-A-57-52
No. 550, JP-A-57-79052 Jij et al.

The characteristics of these technologies are that a liquid layer is formed by centrifugal force on the inner peripheral surface of a rotating cylindrical drum, a jet of molten metal is ejected into the liquid layer, and the molten metal is rapidly solidified to produce thin metal wires. This method can easily obtain thin wire mesh wires with a circular cross section and excellent properties, and can significantly increase the cooling rate compared to conventional methods. It is known that it is particularly suitable for producing fine metal wires made of grain-containing metals. The inventors of the present invention have continued to conduct intensive research into the development of manufacturing equipment and manufacturing technology for spinning in a rotating liquid as disclosed in the above-mentioned disclosures, but they have now come across a major obstacle. That is,
This spinning method uses centrifugal force to form a cooling liquid layer along the inner periphery of a rotating cylindrical drum, and by keeping the surface and interior of this cooling liquid layer stable, a molten metal flow ejected as a jet is formed. The molten metal stream stably enters the cooling liquid layer without disturbance, and after the molten metal stream is rapidly solidified, it is stably wound around the inner wall of the cylindrical drum by centrifugal force to form the desired thin metal wire. It is something. Therefore, in the conventional procedure for manufacturing fine metal wires by this rotating liquid spinning method, as shown in FIG. The molten metal (
3) Wait for ejection from a nozzle (4) with a predetermined hole diameter attached to the tip of the tomato melting furnace (2). Next, the cylindrical drum (5) is rotated at a predetermined number of rotations, and a predetermined amount of cooling liquid (6) is supplied from a supply device (not shown). Subsequently, the melting furnace system [heating device (1) and melting furnace (2) 1 are set at predetermined positions in the space inside the cylindrical drum (5) as shown in the figure. Thereafter, an inert gas is introduced at a predetermined pressure through a pipe (7) connected to the melting furnace (2), and pressure is applied to the molten metal, which is ejected as a jet (8) from a nozzle (4). The jet (8) enters the rotating cooling liquid, rapidly solidifies into a thin metal wire (9) (shown in cross section), and is wound onto the inner wall of the cylindrical drum (5). Usually, it is necessary to wind up a certain length of thin metal wire, so the melting furnace system [heating device (1) and melting furnace (2)] traverses in the width direction [in the direction of the arrow] of the cylindrical drum (5). be done. After all the initially charged master alloy has been ejected, the melting furnace system is moved from the inside of the cylindrical drum (5) to the outside, and then the rotation of the cylindrical drum (5) is stopped and the cooling liquid falls. is received in a receiving container (not shown), and then the produced bundle of thin metal wires is collected. The conventional method was a batch-type production method in which the above-mentioned procedure is completed in one cycle, or a conventional method of spinning in a rotating liquid. Therefore, as can be easily inferred, the amount of thin metal wire per batch is limited due to constraints imposed by the size of the machinery and equipment, and preparatory and post-processing operations for each batch require time. For these reasons, the productivity is extremely low, and the conventional rotating liquid spinning method has its drawbacks, and the actual situation is that it cannot be turned into a bottom-end company.

The present inventors have overcome the above-mentioned obstacles, and have provided a continuous manufacturing method and apparatus for thin metal wires with high productivity and low processing costs, which take advantage of the basic characteristics of the spinning method. .

Embodiments of the present invention will be described below based on the drawings. FIG. 2 is a schematic diagram showing the principle of the present invention. In the figure, aυ is the metal melting furnace system, and (2) is the melting furnace system Ql.
) is a molten metal jet stream ejected from a nozzle attached to the tip of the molten metal jet stream, and (2) is a waterway that runs in a spiral trajectory such as (taa), (tab), and (xac), for example, a rubber belt with nine grooves. , a structure that can maintain a cooling liquid layer of a certain shape. The α paste is a nozzle that supplies liquid to the waterway (6), and the amount of liquid supplied can be adjusted depending on conditions such as the speed and shape of the running waterway. As shown in the figure
The molten metal jet stream (6) ejected in the loop of 18b) rapidly cools and solidifies in the cooling liquid layer that travels in a rotating orbit with the waterway (to), and due to the action of centrifugal force, the molten metal jet stream (6) It is taken up to the bottom of the waterway, becomes a thin metal wire, passes through the loop of (taC), and passes through the end (1) of the waterway.
It separates from the liquid layer at the part 8d) and is wound up by winder 0!19.

The rubber belt that forms the waterway changes direction and reaches the other end position (1:1le) that endlessly supplies liquid to the waterway.
Return to As a method for drawing a spiral trajectory in the waterway, for example, a fixed rail drawing a spiral trajectory is created by connecting rail units αQ as shown in FIG. 8 (8),
There is a method of attaching an endless belt aη having a shape as shown in FIG. 8 to the rail.

Here, when the belt ση runs on the fixed rail, in order to reduce frictional resistance and make the running smooth, compressed air is guided to the rail through the introduction pipe (T), and the sliding between the rail and the belt @ is There is a method that employs the so-called air bearing method in which an air layer is formed on the # side. Also, Figure 4 (A) (
As shown in B), it is also possible to adopt a running system using wheels Q (or J, or an electromagnet Q1 running system as shown in Figure 5). In Figure 2, t;L-(18a)(18
The water channel 0 having 8 loop portions in c) is shown, but it is not necessarily limited to this, but for example, if the loop portion necessary for stabilizing the liquid layer when the running speed in the water channel is high, it may be selected arbitrarily. The device can be easily manufactured by combining the rail units described above.

As described above, the present invention jets a molten metal jet stream toward a stable liquid layer formed by a spiral motion that is substantially equivalent to a rotational motion, rapidly solidifies the molten metal jet flow to create a thin metal wire, and also provides a channel for forming a liquid layer. Since it is possible to take out the thin metal wire from a part of the wire, it is possible to continuously manufacture the thin metal wire, and the productivity is high and the thin metal wire can be provided at low cost.

Example Using the apparatus shown in Fig. 2 and Fig. 8, Fe75S 0
Continuously 13 alloys with the composition Bls (& is atomic%)
It was melted at 20° C. and continuously spouted from a nozzle with a diameter of Q, 15 wO under a pressure of 4 BKgfki. The belt has a shape of 20 cm wide and 15 mm deep.Water at 5℃ is continuously supplied from the water supply nozzle, and the amount of water supplied is adjusted so that the grooves of the rubber belt are full.
It was run at a speed of 1m1n. There are 8 rubber belts (approximately 5)
A spiral with a diameter of 0.00 tm was drawn, and the ejection position was set at the middle of the spiral. The total length of the belt was 26 m. The wound thin metal wire had a diameter of 0.15 m, a substantially perfect circle in cross section, and was substantially amorphous. Furthermore, the continuity of the thin metal wire reached a total wire length of 420,000 m, or 10 hours, excluding forced switching during dotting during winding.

By the way, metals applicable to the present invention include pure metals, metals containing trace amounts of impurities, and all alloys. In particular, alloys that have excellent properties when rapidly solidified, such as those with an amorphous phase. The most preferred alloys are alloys that form or alloys that form non-equilibrium crystalline phases. Specific examples of alloys that form the amorphous phase include "+J Iens" No. 8, 1978, p. 682, Bulletin of the Japan Institute of Metals, Vol. 15, No. 3, 1976, 151-206.
Pageya, "Tsukuda" December 1, 1971 issue, '1B-'IS
Documents such as pages and JP-A-49-91014, JP-A-50-
101215, JP 49-185820, JP 51-8812, JP 51-4017, JP 51
-4018, JP-A-51-4019, JP-A-51-
No. 65012, JP-A-51-78920S, JP-A-51
-78923, JP-A-51-78705, JP-A-5
No. 1-79618, JP-A-52-5620, JP-A-5
This is as described in many publications such as No. 2-114421 and JP-A-54-99085. Among these alloys, Fe-3i-B system, Fe-P-C system, F-3i-B system, Fe-P-C system, F
Examples include the e-P-B system, Co-8i-B system, Ni-5i-B system, etc., but it is important to note that there are many types to choose from, such as combinations of gold content and semimetals, and combinations of metals and metals. Not even. Moreover, by taking advantage of its compositional characteristics, it is possible to assemble an alloy with excellent properties that cannot be obtained with conventional crystalline metals. Further, as a specific example of an alloy that forms a non-equilibrium crystalline phase, for example, "Tetsu to Hagane" Vol. 66 (1)
980) No. 3, p. 882-'+89, "Journal of the Japanese Metal Society," Vol. 44, No. 3, 1980, p. 24, p. 4, "T
Video 5ACTION 0FTf(E JAPAN lN
5TITUTE OF METALSJ VOL, 2
0 No, 8August 19794611h47
Page 1, Summaries of the General Conference of the Japan Institute of Metals (1979)
(October) 850 pages, 851 Fe-Cr-A described in
/ series alloy, Fe-Al! -C-based alloys and general presentation summaries of the Autumn Conference of the Japan Institute of Metals (November 1981) 428-4
Mn-Al-C alloy, Fe-Cr-A described on page 25
l! Examples include Fe-Mn-Al-C alloys.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing a conventional method, Fig. 2 is a schematic diagram showing an embodiment of the present invention, Fig. 8 (8)) to Fig. 5 (6)
1 is a schematic perspective view of various examples of waterway devices according to the present invention. Qυ... Melting furnace system, (6)... Molten metal jet stream, Ql... Channel, (18a to 08c)... Loop part in the channel, Q4)... Liquid supply nozzle, 4. ... Winder, asu... rail unit, αη... belt,
(To)...Introduction pipe, QI...Wheel, (7)■υ...
・Electromagnet agent Yoshihiro Moriki Figure 1 Figure 2 Figure 3 (A) (B) Figure 4<A) 5 (A) (3)

Claims (1)

[Claims] (1) A centrifugal force is exerted on a liquid running in a water channel having a portion that describes a spiral trajectory by giving a motion equivalent to a circumferential motion, forming a stable liquid layer, and melting the liquid into the liquid layer. 1. A method for continuous production of thin metal wire, characterized in that a jet stream of molten metal ejected from a system enters the system and is rapidly cooled and solidified, thereby taking out the thin metal wire from a part of the waterway and pulling it out. 2. A water channel has a plurality of loop portions forming a spiral trajectory, a nozzle is provided for supplying liquid to the water channel, and molten metal is added to the liquid layer formed by the liquid supplied to the water channel at an appropriate location of the loop portion. 1. A continuous manufacturing apparatus for thin metal wire, characterized in that a means for ejecting a jet stream is provided, and a winder is provided for collecting and winding the metal solidified by the liquid layer from a suitable position in the water channel.