JPS6372450A - Device for continous production of thin metallic wire - Google Patents

Abstract

PURPOSE:To eliminate the undue stresses to be exerted to a thin metallic wire in the process of solidification and to simplify a device for spinning in a rotating liquid provided with an endless belt in the outer peripheral part in the space between two pieces of rotary drums by supporting the endless belt by means of supporting rollers. CONSTITUTION:The rotary drum 10 is longitudinally bisected to form a ring of an L-shaped section consisting of a cylindrical part 12 and a disk-shaped side plate 16 having a circular aperture 14 at the center. The side face of the cylindrical part 12 is sloped 40 and the slopes 4 are opposed to each other to form the space 10c. The endless belt 42 supported by the many supporting rollers 46 is wound on the drum 10. The drum 10 is rotated and a molten metal is injected from an injector 26 to a rotating cooling liquid layer 24 formed on the inner periphery of the drum. Such molten metal jet 36 is cooled and the thin metallic wire transferred onto the belt 42 rotated by a driving device 50 is carried by the belt 42 to a taking out port 44 for said wire, from which the wire is drawn to the outside from the drum 10 and is taken up on a coiler 58.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an apparatus for continuously producing thin metal wires, and more specifically, a device for continuously producing thin metal wires and continuously recovering the thin metal wires by a rotating liquid spinning method. This invention relates to continuous manufacturing equipment for thin metal wires.

[Prior art] Methods for obtaining gold R fine wire directly from molten metal include casting, blooming,
It has attracted particular attention in recent years from the viewpoint of energy saving by omitting intermediate steps such as rolling, or the development of a metal material f1 with new properties obtained by rapid solidification. The excellent properties obtained by rapid solidification include ultra-fine crystal grains, non-polarization, homogenization, expansion of the solid solubility limit, and strength, corrosion resistance, electrical and magnetic properties due to amorphization, etc.0 For example, amorphous The thin metal wire structure, that is, amorphous fiber, exhibits high strength and toughness that cannot be obtained with conventional crystalline metals, so it is being considered for application as a high-strength material, and it also has unique magnetic properties and Because there are
Application as a functional material is possible.

Conventionally announced methods for directly obtaining thin metal wires from molten metal can be broadly classified into the following four types.

1) Extrusion method 2) Rotating liquid spinning method 3) PDME method 4) Taylor method The extrusion method of 1) injects a melt molten in an inert gas into a fluid with a viscosity comparable to that of molten metal. This method aims to stabilize the jet flow and form fibers.

The spinning method in rotating liquid (2) is a method in which a cooling liquid bath is formed in a rotating drum by centrifugal force, and molten metal is injected into this cooling liquid to form fibers.

3) PDME method is Pendant Drop M
eftF, an abbreviation for the xtraction method, is a method in which pendant-shaped metal droplets are attached to the side of a disk rotating at high speed, and then pulled out and solidified.

The Taylor method (4) is a method in which metal placed in a glass tube is heated and melted, the glass tube softened by heating is pulled out together with the melt inside, and a drum is wound up.

The present invention relates to the improvement of the spinning submerged spinning method (2) among the four methods described above.The conventional apparatus used in the six-rotational submerged spinning method is shown in the front view of FIG. In Figure 0, which is a side sectional view, the rotating drum 10 includes a hollow cylindrical part 12, a side plate 16 attached to the negative side thereof and having a circular opening 14 in the center, and a side plate 16 that covers the entire surface of the other side of the cylindrical part 12. The output shaft 22 of the motor 20 is fixed to the center of the side plate 18, and the rotating drum 1
0 rotates at high speed. Cooling liquid is supplied to the inner periphery of the rotating drum 10 that rotates simultaneously at high speed, and the cooling liquid forms a rotating cooling liquid bath 24 due to centrifugal force. Molten metal injection device 26
consists of a vertical molten metal heating furnace 28 , a molten metal injection nozzle 30 attached downward to the lower end of the molten metal heating furnace 28 , and a molten metal pressurizing pipe 32 attached to the upper part of the molten metal heating furnace 28 . It is inserted through the opening 14 and is movable in the axial direction of the rotating drum 10.

To obtain thin metal wire using this rotating liquid spinning method,
The rotary drum 10 is rotated to supply cooling liquid to form a rotary cooling liquid bath 24 on the inner periphery of the rotary drum 10.Then, the master alloy inserted into the molten metal heating furnace 28 is melted to form a molten alloy 34. The metal injection device 26 is inserted through the opening 14 of the rotating drum 10, and the molten metal injection nozzle 30 is positioned above the inlet end 25a of the rotating cooling liquid tank 25. Next, an inert gas is sent into the molten metal pressurizing pipe 32 to melt the metal. At the same time as the alloy 34 is injected from the molten metal injection nozzle 30, the molten metal injection device 26 slowly moves from the inlet end 25g of the rotary cooling liquid 8!2 toward the inner end 25b. The injected molten alloy jet stream 36 is injected into the rotating cooling liquid bath 24 and rapidly cooled to become a thin metal wire 38 . By this method, fine wires 38 are continuously formed and accumulated in the rotating cooling liquid bath 25 within the rotating drum 10.

In this conventional rotating liquid spinning method, the metal wire I! 38 is not recovered from the rotary drum 10 and is accumulated in the rotary cooling liquid tank 25 of the rotary drum 10, so production is inevitably batch-type, and the amount produced at one time also depends on the size of the rotary drum 10. Due to the restrictions, when stopping the rotating drum 10 and taking out the thin metal wire 38, the metal 41! There was a drawback that the l line 38 could get tangled.

As a proposal for solving the drawbacks of the conventional spinning method in a rotating liquid, there are inventions disclosed in Japanese Patent Application Laid-open Nos. 135456/1982 and 166147/1980.

In the former invention, when manufacturing thin metal wire, the molten metal injection nozzle of the molten metal injection device is first rotated by a rotating drum! , placed in the unformed part of the rotating cooling liquid bath in the opening of the
A molten metal shet is injected into this opening to form a flat thin wire, and then the molten metal injection device is moved into a rotating drum to continuously inject the molten metal jet '5 into the rotating cooling liquid bath. In addition to manufacturing a thin wire, the first manufactured flat sheet is wound up using a winding means. In this method, the continuously manufactured metal wire t2 is stored in the rotating cooling liquid bath inside the rotating drano, so that thin metal wires can be obtained continuously. Since the flat thin wire is injected directly into the opening, it is different from the thin metal wire that is later injected into the rotating coolant water bath. It has drawbacks such as being extremely difficult.

In the latter invention, two rotating drums are installed horizontally on one side with a predetermined gap maintained, a liquid layer side plate is provided around the inner peripheral surface of both drums, and two seal rings are installed in the gap between both drums. The two seal rings are slidably arranged side by side, and the two seal rings are interlocked at the upper position and open at the lower position, and an endless belt is installed so as to be in contact with the gap between the seal rings when the seal rings are in the open position. The molten metal jet is injected from the molten metal injection device into the gap between the two rotating drums, solidifies in the rotating liquid layer on the inner periphery of the rotating drums, and becomes thin metal wires. At the opening, the metal wire is transferred to an endless belt, which pulls the thin metal wire out of the rotating drum. In this method, the fine metal wire that has solidified in the gap between the rotating drum is continuously taken out and collected through the gap between the seal rings, but the wire rod removal mechanism is extremely complicated because the wire rod is taken out by opening and closing the seal ring. However, the circumferential speed of the rotating drum and the rotational speed of the seal ring do not necessarily match, which adversely affects the solidification process of the thin metal wire, and a separate tuning mechanism is required to match the circumferential speed of the endless belt and the rotating drum. There are disadvantages such as requiring

[Problems to be Solved by the Invention] The present invention has been made to solve the problems described in Ati in the rotating liquid spinning method, which is a method for directly obtaining metal a-wire from molten metal. A thin metal wire manufacturing device that can easily take out the winding end, and can continuously recover thin metal wires with a simple configuration without applying unreasonable stress during the solidification process of the thin metal wires. The purpose is to provide

[Means for Solving the Problems] The thin metal wire manufacturing apparatus of the present invention forms a cooling liquid bath in a rotating drum by centrifugal force, and injects molten metal into the cooling liquid bath to continuously manufacture the thin metal wire. In the manufacturing apparatus, the rotating drum is vertically divided into two halves, each of which is formed into a rhomboid-shaped ring, which is opposed to each other at a predetermined interval, and has an inclined surface formed on the opposing tip side to form an fII; Said 2
An endless belt supported by a plurality of support rollers and wound around the outer periphery of a divided rotating drum except for some thin metal wire outlets, a rotation drive mechanism for the endless belt, and the rotating drum and the endless belt. a cooling liquid bath held in the space by centrifugal force;
a molten metal injection device that injects molten metal into the cooling liquid bath; a winder that takes out and winds the thin metal wire formed by rapid solidification from the thin wire outlet of the rotating drum; The main feature is that the cooling liquid supply device is equipped with a cooling liquid supply device that supplies a cooling liquid.

[Function] The rotating drum faces left and right with the side plates facing outward, with a predetermined gap in between. An endless belt supported by support rollers is wrapped around the outer periphery of the rotating drum, except for the thin metal wire outlet. Therefore, the gap between the rotating drum is closed by the endless belt, and a rotating tank is formed between the side plates on both sides and the inner periphery of the rotating drum.When cooling liquid is supplied to this tank and the endless belt is rotated, the rotating drum is closed. The rotation of the centrifugal force acts on the cooling liquid, creating a rotating cooling liquid bath. The molten metal injection device is inserted through the opening of the rotating drum, placed above the gap between the rotating drums, the base metal is melted and heated in the molten metal heating furnace, and the molten metal is pressurized by the molten metal pressurizing device, thereby injecting the molten metal. The molten metal jet is injected from the nozzle toward the rotating cooling liquid bath.The molten metal jet injected into the rotating cooling liquid bath from above the gap of the zero-rotation drum is rapidly cooled in the rotating cooling liquid bath, so that it does not solidify. The metal iFa wire is brought into contact with the endless belt due to centrifugal force. When the fine metal wire rotates with the endless belt and is brought to the metal wire outlet of the rotating drum, since the gap in the rotating drum is not closed by the endless belt, it is pulled out from the gap in the rotating drum and continuously wound. It is wound up by a take-up machine. On the other hand, the cooling liquid discharged from the gap of the rotating drum serving as the metal wire outlet is circulated again to the rotating cooling liquid tank by the cooling liquid supply device.

[Real Color Example] A preferred embodiment of the present invention will be described below with reference to the drawings.

Fig. 1 is a partially cutaway view of an embodiment of the present invention, and Fig. 2 is a sectional view taken along the line ll-Tl of the embodiment of Fig. 1. The zero-rotation drum 10 is vertically divided into two parts. It consists of a hollow cylindrical part 12 and a disc-shaped side plate 16 that is integrally attached to one side of the cylindrical part 12 and has a circular opening 14 in the center, and has a ring-shaped cross section. The other side surface of the cylindrical portion 12 is an inclined surface 40 inclined inward. The rotating drums 10& and 10b are divided into two parts, with the inclined surfaces 40 facing each other and the side plates 16 on the outside, with a gap 1 slightly larger than the diameter of the Kinsho MA wire.
They face each other on the left and right, separated by 0c.

The endless belt 42 connects rotating drums 10M and 10b.
A thin wire outlet 44 is provided on the outer periphery of the cylindrical portions 12a and 12b.
is wrapped around the two rotating drums 10.
The gap 10c is closed by the endless belt 42 except for the thin metal wire outlet 44, and the space surrounded by the inner periphery of the cylindrical part 12 and the side plates 16 on both sides is connected to the rotating liquid tank 2.
It's now 5. In addition, so that the gap 10e of the rotating drum 10 always maintains the same interval while rotating, the endless belt 42 may be provided with a guide, or the rotating drums 10a and 1 may be rotated.
The outer side of the endless belt 42 wound around the 0-rotation drum 10, which may be connected at 2 to 3 places on the 0b and cut by 1 inch, is supported by a large number of support rollers 46. The endless belt 42 wound up to one end 44a of the metal wire 44 goes around the outside of the support roller 46 and returns to the other end 44b of the thin metal wire outlet 44, and is stretched by a tension roller 48 in between. An endless belt drive 8! horizontal 50 is attached between the tension rollers 48, and a drive t
! One mechanism 50 rotates the endless belt 42 by a motor 20 and a pair of driving pulleys 52.

Molten metal injection equipment! 26 is a quartz tube 54 and a heating coil 56
A molten metal heating furnace 28 and a quartz tube 5 of the molten metal heating furnace 28
Molten metal injection nozzle 30 attached downward to the lower end of 4
and a molten metal pressurizing pipe 32 attached to the upper part of the quartz 9F54 of the molten metal heating furnace 28, which is inserted through the opening 14 of the rotating drum 10 and can be moved in the axial direction of the rotating drum 10.

A winder 5 is installed in the tangential direction of the metal 11111 outlet 4 and 1.
8 is provided to wind up the metal MJ wire drawn out from the metal thin wire outlet 44.

Further, a cooling liquid recovery tank 60 is installed directly below the metal ll1iI wire outlet 44 to recover the cooling liquid discharged from the thin metal wire outlet 44. The cooling liquid collected in the cooling liquid recovery tank 60 is pumped up by a pump 62 and supplied to the inner periphery of the rotating drum 10 through a cooling liquid supply pipe 64.

The operation of the apparatus according to the present embodiment having the above configuration will be explained. In FIG. 1, the motor 2 of the drive device 50
0 to rotate the endless belt 42 clockwise by the driving pulley 52. As a result, the two rotating drums 10a and 10b rotate counterclockwise while maintaining a slight gap 10c, and the pump 62 is activated to supply the inner circumference of the rotating drum 10 and the side plates on both sides from the cooling liquid supply pipe 64. When the cooling liquid is supplied to the rotating cooling liquid tank 25 surrounded by 16, the cooling liquid is stuck to the inner circumference of the rotating drum 10 by centrifugal force, and the rotating cooling liquid tank 24 of the cooling liquid is formed. The tank 25 is filled with a cooling liquid. At this time, the cooling liquid is discharged from the gap 10c of the thin metal wire outlet 44, but this cooling liquid is collected in the cooling liquid recovery tank 60, pumped up by the pump 62, and rotated again by the cooling liquid supply pipe 64. It is circulated to the cooling liquid tank 25.

On the other hand, a master alloy is inserted into the molten metal heating furnace 28 of the molten metal injection device 26, heated and melted to form a molten alloy 34, and the molten metal injection device 26 is inserted from the opening 14 of the rotary drum 10 as shown in FIG. The molten metal injection nozzle 30 is positioned directly above the gap 10e between the two circulation drums 10 as shown in FIG.
4 is injected from the molten metal injection nozzle 30. The molten alloy jet stream 36 injected from the molten metal injection nozzle 30 is injected into the rotating cooling liquid layer 24 and is rapidly cooled by the cooling liquid to become a metal m-line 38.

The metal side 1t138 falls onto the gap 10c and the gap 10
The thin metal wire is pressed by centrifugal force against the end 1 nose belt 42 that closes the window e, and is carried as it is by the endless belt 42 to the thin metal wire outlet 44, from where it is drawn out of the rotating drum 10. The end of the thin metal VA 38 that has been drawn out is wound up by the winder 58 and the molten metal jet 3 is injected from the molten metal injection nozzle 30 through zero or more operations.
6 becomes a thin metal wire 38 by the rotating cooling liquid layer 24, is discharged from a thin metal wire outlet 44, and is continuously collected.

A thin metal wire was manufactured using the apparatus of this example under the following conditions. Molten metal: Ni-based heat-resistant alloy, melting temperature: 1600
°C, nozzle diameter: 0.1~0.2 degrees Celsius, distance between nozzle and water surface M: several ■, angle between nozzle and water surface = 30~45°, circumferential speed of drum relative to jet speed of molten metal : Same or slightly faster (approximately 10II/See), drum diameter: 60cI1. The drum rotation speed was 300 rpm, and as a result, fine metal wires having a very fine structure and excellent toughness were continuously obtained.

[Advantages of Embodiment] In this embodiment, the side surface of the cylindrical portion 12 of the rotating drum 10 is made into an inclined surface 40, and the inclined surfaces 40 of the two rotating drums 1o are made to face each other to form a gap 10e, so that the cross section of the gap 10c has a figure 7 shape and ensures that the molten metal jet 36 is directed through the gap 10.
c and placed on the endless belt 42. Note that the cooling rate of the molten metal jet is an issue in obtaining thin metal wires, but depending on the alloy composition, the temperature, pressure, and speed at which the molten alloy is ejected, the distance and angle between the rotating cooling liquid layer and the tip of the molten metal nozzle, The diameter and shape of the molten metal nozzle, the components and temperature of the cooling liquid may be selected as appropriate.

[Effects of the Invention] As explained above, the present invention has two rotating drums facing each other left and right with a gap between them, and an endless belt supported by support rollers, which is made of metal 4Iil! The molten metal jet is wrapped around a rotating drum except for the outlet, and a molten metal jet is injected into the rotating cooling liquid layer that is formed on the inner circumference of the rotating drum by the rotation of the rotating drum. The metal a-wire is passed through an endless belt*
The um beam is carried to the outlet, pulled out from the rotating drum, and wound up by a winder.Since the endless belt and the rotating drum rotate at the same speed, the molten metal jet injected into the rotating cooling liquid layer is No extra stress is applied during solidification, and the gold α4IjJ wire will not be cut or deformed. Also, the endless belt rotates while closing the gap in the rotating drum, making R precision easier than conventional ones. It is. Furthermore, the wound end of the manufactured thin metal wire can be easily taken out from the gap of the rotating drum at the metal wire outlet, so that the manufactured thin metal wire can be continuously collected from the rotating drum.

Furthermore, since the cooling liquid can be circulated, the temperature conditions of the cooling liquid can be easily adjusted, and since there are gaps around the entire circumference of the rotating drum, the injection position of the molten metal nozzle can be freely selected. be able to.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of an embodiment of the present invention, Fig. 2 is a sectional view taken along the line Tl-11 of the embodiment of Fig. 1, and Fig. 3 is a conventional rotating submerged spinning method. A front view of the device, and FIG. 4 is a side sectional view of FIG. 3. 10...Rotating drum, 12... Cylindrical portion, 14...
Opening, 16... Side plate, 24... Rotating cooling liquid layer,
25... Rotating cooling liquid tank, 26... Molten metal injection device, 28... Molten metal heating furnace, 30... Molten metal injection nozzle, 32... Molten metal pressure piping, 34... Molten alloy, 36
... Molten alloy jet, 38... Fine metal wire, 42.
...Endless belt, 44...Metal thin wire outlet, 4
6... Support roller, 50... Endless belt drive device, 58... Winder, 6o... Cooling liquid recovery tank, 62... Pump, 64... Cooling liquid supply pipe 2nd Figure 3 Figure 40

Claims (1)

[Claims] (1) In an apparatus that forms a cooling liquid bath within a rotating drum by centrifugal force and injects molten metal into this cooling liquid bath to continuously produce thin metal wires, the rotating drum is vertically divided into two parts. A rotary drum configured as a letter-shaped ring facing each other at a predetermined interval and having inclined surfaces formed on the opposing tip sides, and a plurality of support rollers supported on the outer periphery of the two-divided rotary drum. an endless belt wound around the parts except for some thin metal wire outlets; a rotational drive mechanism for the endless belt; a cooling liquid bath held by centrifugal force in a space formed by the rotating drum and the endless belt; a molten metal injection device that injects molten metal into the cooling liquid bath; a winder that takes out and winds the thin metal wire formed by rapid solidification from the metal wire outlet of the rotating drum; and supplies the cooling liquid to the cooling liquid bath. 1. An apparatus for manufacturing thin metal wire, characterized in that it is equipped with a cooling liquid supply device.