JPH0452169B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an apparatus for continuous production of thin metal wires.

BACKGROUND ART 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 establishment of this technology is progressing rapidly.
For example, in the spinning method disclosed in JP-A No. 56-165016, a cooling liquid layer is formed by centrifugal force on the inner peripheral surface of a rotating cylindrical drum, and molten metal is poured into the liquid layer in the axial direction of the drum. The molten metal is rapidly cooled and solidified to produce a coiled metal wire. This method easily produces a thin metal wire with a circular cross section and excellent properties. It is known that the cooling rate can be significantly increased compared to previous methods, and that it is particularly suitable for manufacturing thin metal wires made of amorphous metals or metals containing fine crystal grains. .

The spinning method in a rotating liquid described in the above-mentioned document is shown in more detail in FIG. That is, a predetermined amount of a pre-prepared master alloy having a predetermined alloy composition is charged into a melting furnace 102 equipped with a heating device 101, heated and melted to become a molten metal 103,
The ejection from a nozzle 104 having a predetermined hole diameter attached to the tip of the melting furnace 102 is awaited. next,
Rotating the cylindrical drum 105 at a predetermined number of rotations,
A cooling liquid layer 106 is formed by supplying a predetermined amount of cooling liquid from a supply device (not shown). Next, the melting furnace system (heating device 101 and melting furnace 102 is set at a predetermined position in the space inside the cylindrical drum 105 as shown in the figure. After that, a predetermined pressure is applied from a pipe 107 leading to the melting furnace 102. Inert gas is introduced into the molten metal 103 and pressure is applied to the nozzle 10.
4 is ejected as jet 108. The jet 108 enters the rotating cooling liquid layer 106 and rapidly solidifies into a thin metal wire 109 (only the cross section is shown), which is wound onto the inner wall of the cylindrical drum 105. Usually, it is necessary to wind up a certain length of thin metal wire, so the melting furnace system (heating device 101 and melting furnace 102 are traversed in the axial direction (direction of arrow 110) of the cylindrical drum 105. After all of the mother alloy has been ejected, the melting furnace system is moved out of the space of the cylindrical drum 105, and then the rotation of the cylindrical drum 105 is stopped, and the falling cooling liquid is received in a receiving container (not shown). After that, the produced bundle of thin metal wires is taken out.The batch-type production method in which the above-mentioned procedure is one cycle has been the conventional method for spinning in a rotating liquid.

On the other hand, a method for continuously manufacturing thin metal wires by spinning in a rotating liquid is disclosed in Japanese Patent Application Laid-Open No. 70062/1983. In this method, a cooling liquid is injected into an annular groove provided on the inner peripheral surface of a hollow rotating roll, the cooling liquid is held in the groove using the centrifugal force of the roll, and the molten metal is passed through a nozzle at the lower end of the crucible. Let it flow into the groove,
An amorphous metal coil formed by rapid cooling and solidification is guided outward by a guiding means and wound by a winding machine. Compressed air is used as the guide means, or a guide plate such as a scraper is brought into contact with the bottom of the groove to scoop out the coil.

Problems to be Solved by the Invention In the above-mentioned conventional example, firstly, in the batch-type manufacturing method, the amount of thin metal wire per batch is limited due to restrictions imposed by the size of mechanical equipment;
The disadvantage of the conventional spinneret spinning method is that the productivity is extremely low due to the time required for pre-preparation and post-processing of one batch of cans, and the reality is that it is impossible to commercialize this method. It was hot.

Further, in the continuous manufacturing method, when guiding the coil, not only is the cooling liquid layer disturbed by the action of the guiding means, but also it is necessary to continuously replenish the cooling liquid blown outside by the guiding means. This also increases the turbulence in the cooling liquid layer. Incidentally, in an attempt to obtain the desired thin metal wire of about 60 to 250 μmφ, the inventors tried the continuous manufacturing method described above under various conditions, but the molten metal liquid spouted from the nozzle was unstable due to the cooling liquid layer. It fell apart before it cooled and solidified inside, making it impossible to obtain a continuous thin metal wire.

The present invention solves these problems,
The object of the present invention is to provide a continuous manufacturing apparatus for thin metal wires that takes advantage of the basic characteristics of spinning in a rotating liquid and has high productivity and low processing costs.

Means for Solving the Problem In order to solve this problem, the present invention provides a rotating drum in which a cooling liquid layer is formed on the inner peripheral surface by centrifugal force, and a drive device for rotating the rotating drum at a predetermined rotation speed. Continuous production of thin metal wire, comprising a jet means for supplying molten metal as a jet to a cooling liquid layer, and a winder provided outside the rotating drum to wind up the thin metal wire formed in the cooling liquid layer. The apparatus further comprises: a pick-up for synchronous rotation with the rotating drum; and during the synchronous rotation, the pick-up at a first radial position in the layer of cooling liquid and a position of the rotating drum relative to the first radial position; a thin metal wire guiding device including cam means for radially displacing the wire to and from a second radial position proximate to the rotational axis; and a pick-up in the first radial position and substantially opposite the jet supply means. timing control means for actuating the jet supply means to position the tip of the thin metal wire above the pick-up when the jet is in the rotating drum; The first rotary drive unit is rotatably driven to attract and take in the parts.
a magnetic roller, a scraper facing the first magnet roller for peeling and guiding the tip of the fine metal wire that has been sucked and taken in; A second magnet roller that is rotatably driven within the rotating drum and movable to the vicinity of the winding machine outside the rotating drum in order to wind and hold the continuous portion of the thin metal wire. Provides continuous manufacturing equipment.

Effect: According to the above configuration, the pick-up, which rotates in synchronization with the rotating drum and can be displaced in the radial direction by the cam means, guides the tip of the thin metal wire to the first magnet roller and causes it to be attracted thereto. , no disturbance occurs in the cooling liquid layer. Then, the thin metal wire that has been sucked and taken in by the first magnet roller is guided to be peeled off by a scraper, and is attracted to the second magnet roller, so that the portion of the thin metal wire (continuous (only a small part of the total length of the thin metal wire to be manufactured) is wound and held on the second magnet roller. As a result, conditions are provided for taking out the thin metal wires from the rotating drum while continuing the continuous production of the thin metal wires. Since the second magnet roller can be moved close to the external winder, the thin metal wire can be passed to the winder, and from then on, the thin metal wire can be continuously wound directly from the rotating drum by the winder. be.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 4.

In FIGS. 1 and 2, reference numeral 1 denotes a rotating drum with one end closed and the other end open, and its rotating shaft 2 is rotatably supported via a pair of bearings 3. A driven pulley 4 is fixed to the rotating shaft 2, and the driven pulley 4 is connected via a timing belt 5 to a drive pulley 7 fixed to an output shaft 6a of a drive motor 6.

A guide box 8 is further fixed to the rotating shaft 2, and a movable body 9 is housed within the guide box 8 so as to be movable in the radial direction of the drum 1. A connecting arm 10 extends from the movable body 9 in a direction away from the drum 1, and this connecting arm 10 is guided to a cam ring 12 via a cam follower 11. Furthermore, from the movable body 9, a connecting bar 13
protrudes into the drum 1, and a pick-up 13a is provided at one end. Connection bar 13
drum 1 so that it can move in the radial direction of drum 1.
A guide hole 1a extending in the radial direction is formed at the closed end side. Since the guide box 8 is fixed to the rotating shaft 2, the movable body 9, that is, the pick-up 13a connected thereto, rotates in synchronization with the drum 1. At this time, the pick-up 13a follows the cam ring portion of the cam ring 12. radially displaced.
The cam ring part of the cam ring 12 is a pick-up 13a.
is set so that it follows the trajectory A shown in FIG. Further, the pick-up 13a has a single L connected to the connecting bar 13, as shown in FIG. 4a.
Although the pick-up 13a may be constructed with a bent rod in the shape of
As shown in FIG.
It is preferable to construct the net with a predetermined area as shown in Figure a. Note that the guide box 8, movable body 9, connecting arm 10, cam follower 11, cull ring 1
2. The connecting bar 13 and the pick-up 13a constitute a thin metal wire guiding device 14.

A melting furnace 15 equipped with a heating device 16 is disposed inside the rotating drum 1 . The melting furnace 15 has a nozzle 17 with a predetermined hole diameter at the lower end, and a pipe 18 at the upper end which is also used for supplying alloy pellets.
It is connected to an inert gas supply source (not shown) via. As the heating device 16, it is desirable to use a high frequency induction heating coil as shown in the figure so that the metal can be melted quickly in the melting furnace 15.

Inside the rotating drum 1, a first magnet roller 19 is disposed at a fixed position substantially opposite to the melting furnace 15 with respect to its center.
The magnet roller 19 is rotated by a drive motor 20. A nip roller 28 whose position is fixed is provided opposite to the first magnet roller 19, and a second magnet roller 29 rotated by a drive motor 30 is provided below the first magnet roller 19. ing. The second magnet roller 29 is movable outside the rotary drum 1 together with a drive motor 30 for it. Further, a scraper 31 is disposed below the nip roller 28, facing the first magnet roller 19.

Further, a cam disk 21 having a marking protrusion 21a is fixed to the rotating shaft 2 at one location in the circumferential direction, and a proximity switch 22 detects when the marking protrusion 21a reaches a predetermined rotational position.

The continuous manufacturing apparatus for thin metal wires having the above configuration operates as follows.

First, a predetermined amount of a pellet-shaped master alloy having a predetermined composition prepared in advance is charged into the melting furnace 15.
The metal is heated and melted by the heating device 16 to form a molten metal 23, which is kept on standby so that it can be ejected from the nozzle 17 at the lower end of the melting furnace 15 at any time. Next, the rotary drum 1 is rotated at a predetermined number of rotations by the drive motor 6, and a predetermined amount of cooling liquid is supplied to the drum 1 from a supply device (not shown). An annular cooling liquid layer 24 is formed on the inner peripheral surface of the cooling liquid layer 24 .

After completing the above preparation work, close proximity switch 2
2 into operation. When the marking protrusion 21a on the cam disc 21 reaches a predetermined rotational position, the proximity switch 22 detects this and operates, for example, a valve (not shown) provided in the piping 18 to melt the inert gas at a predetermined pressure. It is introduced into the furnace 15. As a result, a jet 25 of molten metal is ejected from the nozzle 17 of the melting furnace 15. At this time, the pick-up 13a is located almost directly below the nozzle 17 or slightly in front of the position directly below it. The molten metal jet 25 enters the rotating cooling liquid layer 24, rapidly solidifies and becomes a thin metal wire 25, whose tip end reaches the pick-up 13.
near the outer peripheral surface of the first magnet roller 19 located near the cooling liquid layer 24 in order to move along the trajectory A (FIG. 3) given by the cam contour of the cam ring 12. will be reached. Therefore, after the tip of the thin metal wire 26 is attracted to the magnet roller 19 by magnetic force, it passes between the first magnet roller 19 and the nip roller 28 and reaches the scraper 31. Due to the action of the scraper 31, the tip of the thin metal wire 26 is peeled off from the first magnet roller 19, and is attracted to the second magnet roller 29, where it is wound and held. Now, the ejection speed of the jet 25 is V ₀ , the circumferential speed of the rotating drum 1 is V ₁ , and the circumferential speed of the first magnet roller 19 is
Assuming V ₂ , it is preferable to set the relationship between these parameters as follows.

V ₁ = (0.7 to 1.2) V ₀ V ₂ = (1.0 to 1.2) V ₀ On the other hand, the second magnet roller 29 has its drive motor 30 composed of a constant torque motor, so that the first magnet roller The rotation speed is adjusted so that a constant tension is always applied to the thin metal wire 26 fed out from between the roller 19 and the nip roller 28, so that the thin metal wire 26 is not cut or sagged.

The thin metal wire guiding device 14 achieves the desired purpose by attracting the tip of the thin metal wire 26 to the first magnet roller 19. Therefore, preferably,
The cam ring 12 is made movable in the axial direction of the rotating drum 1, and after the tip of the thin metal wire 26 is attracted to the first magnet roller 19, the cam ring 12 is moved.
is moved so that the cam follower 11 is guided by a circular second cam rack (not shown) provided on the cam ring 12, and the pick-up 13 is moved.
It is advantageous for a to move along a trajectory along the inner circumferential surface of the rotating drum 1. However, this is not necessarily necessary, and the pick-up 13a is
Continuously moving along the trajectory A shown in the figure itself is not a substantial problem.

After the thin metal wire 26 is wound around the second magnet roller 29 to a certain length from its tip, the second magnet roller 29 continues to rotate by a mechanism (not shown) together with its drive motor 30. It was taken out of the rotating drum 1. It is slowly moved to the vicinity of the winder 27. and the second
A thin metal wire 26 (actually guided by a plurality of rollers (not shown)) extending between the magnet roller 29 and the rotating drum 1 is formed by a cutter provided on one empty bobbin in the winder 27. The material is cut and wound around the bobbin according to the above method. Thereafter, the thin metal wire 26 is directly wound from the drum 1 until this bobbin is fully wound, and after that is completed, winding is automatically performed on other empty bobbins in the winding machine 27 in a known manner. Switch. In addition, the second
The purpose of the magnet roller 29 is to pull the thin metal wire 26 out of the drum 1 and deliver it to the winder 27.
After handing over the drum, it is placed on standby outside the drum 1.

In the embodiment described above, if the thin metal wire 26 is to be manufactured continuously over a long period of time, the melting furnace 15 located inside the rotating drum 1 is provided with one or more additional melting furnaces located outside the drum 1. Molten metal or alloy pellets may be continuously supplied from the furnace via piping.

By the way, metals that can be applied to the present invention include metals made of a pure single element, metals made of a single element containing trace amounts of impurities, and all kinds of alloys. The most preferable alloys are alloys having the following properties, such as alloys forming an amorphous phase or alloys forming a non-equilibrium crystalline phase. As a specific example of an alloy that forms the amorphous phase, for example, "Science" 8th
No., 1978, pp. 62-72, Bulletin of the Japan Institute of Metals, Vol. 15, No. 3
No. 1976, pp. 151-206, and "Metal" December 1, 1971.
Documents such as Japanese issue, pages 73-78, and Japanese Patent Application Laid-open No. 1973-91014,
JP-A-50-101215, JP-A-49-135820, JP-A-51-3312, JP-A-51-4017, JP-A-51-
4018, JP-A-51-4019, JP-A-51-65012,
JP-A-51-73920, JP-A-51-73923, JP-A-Sho
No. 51-78705, JP-A-51-79613, JP-A-52-
No. 5620, JP-A-52-114421, JP-A-54-99035
As stated in many publications such as No.
Among these alloys, Fe-Si-
B system, Fe-P-C system, Fe-P-B system, Co-Si-
Examples include B type, Ni-Si-B type, etc., but it goes without saying that a wide variety of types can be selected from metal-semimetal combinations and metal-metal combinations. Furthermore, by taking advantage of the characteristics of their compositions, it is possible to combine alloys that have excellent properties that cannot be obtained with conventional crystalline metals. Further, as specific examples of alloys that form non-equilibrium crystalline phases, for example, "Tetsu to Hagane" Vol. 66 (1980) No. 3, pp. 382-389, "Journal of the Japan Institute of Metals" Vol. 44, No. 3 , 1980, pp. 245-254.
"TRANSACTION OF THE JAPAN"
INSTITUTE OF METALS” VOL.20, No.
8August1979 pp. 468-471, Japanese Institute of Metals Autumn Conference Summary Collection (October 1979), pages 350 and 351, Fe-Cl-Al alloys, Fe-Al-C alloys, and the Japan Institute of Metals. Autumn conference general lecture summaries (1981
Examples include Mn-Al-C alloys, Fe-Cr-Al alloys, and Fe-Mn-Al-C alloys described on pages 423 to 425 (November 2013).

Effects of the Invention As described above, in the continuous manufacturing apparatus for thin metal wire according to the present invention, the tip of the thin metal wire is picked up by the pick-up which rotates synchronously with the rotating drum and is displaceable in the radial direction by the cam means. The thin metal wire is attracted to the first magnet roller, and is further guided to the second magnet roller to be wound and held, so that the thin metal wire can be removed from the rotating drum without disturbing the cooling liquid phase. It can be taken out and wound up continuously by a winding machine, and the productivity is high and thin metal wires can be continuously manufactured at low cost.

[Brief explanation of drawings]

FIG. 1 is a partially sectional side view showing an apparatus for continuously manufacturing thin metal wires according to an embodiment of the present invention, and FIG.
3 is a schematic diagram showing the trajectory of the pick-up, FIG. 4 a, b, and c are perspective views showing various types of pick-ups, and FIG. 5 is a section showing a conventional thin metal wire manufacturing apparatus. FIG. 1... Rotating drum, 6... Drive motor, 12...
...Cam ring, 13a...Pickup, 15...
...Melting furnace, 16...Heating device, 17...Nozzle,
18...Inert gas (alloy pellet) piping, 19
. . . First magnet roller, 21 . , 27
...Rewinder, 31...Scraper.

Claims (1)

[Claims] 1. A rotating drum in which a cooling liquid layer is formed on the inner peripheral surface by centrifugal force, a drive device that rotates the rotating drum at a predetermined rotation speed, a jet means for supplying molten metal as a jet to the cooling liquid layer, and a cooling liquid layer. A continuous production device for a thin metal wire, comprising: a winder provided outside the rotating drum for winding the thin metal wire formed therein; radially displacing the pick-up during synchronous rotation between a first radial position in the cooling liquid layer and a second radial position closer to the rotational axis of the rotating drum than the first radial position; a thin metal wire guiding device including a cam means for picking up the tip of the thin metal wire; a first magnet roller rotatably driven to adsorb and take in the tip of the thin metal wire in proximity to the pick-up located at a second radial position within the rotating drum; A scraper that faces the first magnetic roller and guides the tip of the thin metal wire that has been sucked and taken in to peel, and a scraper that adsorbs the tip of the thin metal wire that has been guided to be peeled by the scraper and winds the continuing portion of the thin metal wire. 1. A continuous manufacturing apparatus for thin metal wire, comprising: a second magnet roller which is rotatably driven within the rotating drum to hold the wire and is movable outside the rotating drum to a position close to a winding machine.