JPH0716709A - Apparatus for producing metal fine wire - Google Patents

Abstract

PURPOSE:To simplify the constitution of an apparatus and to obtain a continuous fine wire having high quality by extending a groove in the horizontal surface of a rotary body having the horizontal surface rotating around a vertical shaft, supplying a cooling liquid into the groove and continuously injecting the molten metal from an injection nozzle. CONSTITUTION:At the time of injecting the molten metal M into the cooling liquid in the groove 4 from the nozzle hole 11 while rotating the rotary body 2, the molten metal M is dipped into the cooling liquid F and rapidly solidified to continuously produce the round cross sectional metal fine wire W. At this time, as the groove 4 and a crucible 3 are relatively shifted in the circumferential direction, the metal fine wire W is continuously extended along the groove 4. As the cooling liquid F is rotated together with the rotary body 2, the cooling liquid is almost in the stationary condition to the rotary body 2. Therefore, by balancing the rotating speed of the rotary body 2 with the injecting quantity from the nozzle hole 11, the desirable size of the metal fine wire W having high quality can be produced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for directly producing fine metal wires by injecting molten metal into a cooling liquid.

[0002]

2. Description of the Related Art Molten metal is continuously jetted from a nozzle,
A method for continuously producing a thin metal wire by bringing this into contact with a cooling liquid layer formed by centrifugal force on the inner surface of a cylindrical drum rotating around a horizontal axis to solidify and cool, is disclosed in Japanese Examined Patent Publication No. S60-38228. Is disclosed in.

[0003]

According to the above-mentioned prior art, the injection nozzle is moved along the axis of the rotary shaft of the drum in order to prevent the metal wires which have been solidified by cooling from being deposited at one place on the inner surface of the drum. There is a need. In addition, in order to manufacture thin wires with high strength, it is necessary to increase the cooling rate,
To manufacture thick wire, it is necessary to increase the cooling rate,
It is also necessary to increase the injection speed of the molten metal. Therefore, in order to satisfy these demands, it is necessary to increase the rotation speed of the drum, and the equipment tends to be large.

The present invention has been devised in order to eliminate such disadvantages of the prior art, and its main object is to provide an apparatus for manufacturing metal wires having a simplified structure. .

[0005]

According to the present invention, an object of the present invention is to rotate a structure of an apparatus for continuously injecting molten metal into a cooling liquid to produce a thin metal wire around a vertical axis. A rotary body having a horizontal plane, a groove extending on the horizontal plane of the rotary body along a circumference centered on a vertical axis, cooling means for supplying a cooling liquid into the groove, and a groove provided above the groove. And a molten metal spray nozzle.

[0006]

According to this structure, since the injection axis of the molten metal is parallel to the rotation axis of the rotating body provided with the cooling liquid groove, it is possible to sufficiently cool the injection nozzle without moving it. Moreover, since the jet nozzle is directed downward, if the jet nozzle is configured to be able to swivel, the rotation speed of the rotating body (coolant groove) is lowered by rotating the coolant groove and the jet nozzle in opposite directions. However, since the relative rotation speed between the cooling liquid groove and the nozzle can be increased, the substantial cooling speed and the molten metal injection speed can be increased without changing the liquid surface position.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described in detail below with reference to specific embodiments shown in the accompanying drawings.

FIG. 1 schematically shows an apparatus for manufacturing a fine metal wire constructed according to the present invention. This thin metal wire manufacturing apparatus 1 includes a rotating body 2 which is driven to rotate about a vertical axis by a DC motor or the like (not shown), and a molten metal M inside.
And a crucible 3 for storing

The rotating body 2 is endless in the circumferential direction,
It also comprises an annular portion 5 having a U-shaped groove 4 having an appropriate depth and an open upper portion, and a spoke portion 7 for supporting the annular portion 5 on the central axis 6. A passage hole 8 for supplying the cooling liquid F into the groove 4 of the annular portion 5 via the central axis 6 is provided in the spoke portion 7.

The crucible 3 is arranged above the opening of the groove 4, and the molten metal M inside the crucible 3 is generated by an eddy current generated in a heating coil 10 wound around a protective tube 9 around the crucible 3.
The nozzle hole 11 provided on the bottom surface while heating
The molten metal M can be injected into the groove 4 from. Further, although not shown in the figure, this crucible 3
The molten metal supply path and the pressurized gas supply path are connected.

Next, the procedure for manufacturing the thin metal wire W by this apparatus will be described. When the molten metal M is sprayed from the nozzle hole 11 into the cooling liquid F in the groove 4 while rotating the rotating body 2, the molten metal M is immersed in the cooling liquid F and rapidly solidified, and the thin metal wire W having a circular cross section is formed. Are continuously manufactured. At this time, groove 4
Since the crucible 3 and the crucible 3 are relatively moving in the circumferential direction, the thin metal wire W is continuously extended along the groove 4.

Here, the cooling water F overflows beyond the outer wall of the groove 4 due to the centrifugal force generated by the rotation of the rotating body 2, but the cooling liquid F is replenished so that a constant liquid level is always maintained. Since the cooling liquid F rotates with the rotating body 2, it is substantially stationary with respect to the rotating body 2. Therefore, the rotation speed of the rotating body 2 and the nozzle hole 1
By balancing the injection amount from No. 1, it is possible to manufacture the metal thin wire W having a desired thickness with high quality.

By the way, when the circumferential groove 4 filled with the cooling liquid F is rotated on a horizontal plane, the liquid level does not become horizontal due to the action of centrifugal force, and the liquid level varies depending on the magnitude of the centrifugal force due to the rotational speed. It causes a change in position. However, in order to manufacture a uniform thin wire, it is necessary to keep the distance between the nozzle hole 11 and the liquid surface constant, and the fluctuation of the liquid surface position is caused by the nozzle hole 1
1 is also accompanied by a change in the distance between the liquid surfaces, which is not preferable for obtaining a uniform thin wire.

In order to eliminate such inconvenience, although not shown in the figure, the crucible 3 containing the molten metal M is constructed so as to be able to revolve around the axis of the rotating body 2 and is rotated. It is recommended to rotate the body 2 in the opposite direction. By doing so, the molten metal M is moved at a relative speed between the crucible 3 and the groove 4.
Since the rotation speed of the rotating body 2 can be lowered to stabilize the liquid level position of the cooling liquid F and the overflow amount of the cooling liquid F can be reduced, the power required to drive the rotating body 2 can be reduced. Can be reduced.

The cross-sectional shape of the groove 4 may be a shape in which a bulged portion 12 outward in the radial direction is formed on the bottom of the groove 4, as shown in FIG. According to this, since the metal thin wire is housed in the bulging portion 12, the housing capacity of the metal thin wire is increased.

[0016]

As described above, according to the present invention, since the solidified fine wires can be deposited in the depth direction of the groove filled with the cooling liquid, the movement of the cooling drum in the rotation axis direction in synchronization with the rotation of the cooling drum is performed. Need not be applied to the nozzle. Further, since the rotating body of the present invention rotates on a horizontal plane, vertical vibration due to the influence of gravity is less likely to occur even if the rotating body has low balance accuracy. Therefore, the configuration of the device can be simplified. In addition, since the rotation speed of the rotating body can be reduced to stabilize the movement of the cooling liquid, the variation in the distance between the nozzle and the liquid surface is reduced, and a high-quality continuous thin wire can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a thin metal wire manufacturing apparatus according to the present invention.

FIG. 2 is a partial cross-sectional view showing a modified example of the groove.

[Explanation of symbols]

 F Cooling liquid M Molten metal W Metal fine wire 1 Metal fine wire manufacturing device 2 Rotating body 3 Crucible 4 Groove 5 Annular part 6 Central shaft 7 Spoke part 8 Passage hole 9 Protective tube 10 Heating coil 11 Nozzle hole 12 Swelling part

Claims (1)

[Claims] 1. An apparatus for producing thin metal wires by continuously injecting molten metal into a cooling liquid, comprising: a rotating body having a horizontal plane that rotates about a vertical axis; A metal having a groove extending along a horizontal plane of the rotating body, a cooling means for supplying a cooling liquid into the groove, and a molten metal jetting nozzle provided above the groove. Fine wire manufacturing equipment.