JPS59104250A - Production of fine metallic wire - Google Patents

Abstract

PURPOSE:To enable take out of a fine wire wound on the inside peripheral surface of a rotary cylindrical drum without collapsing the shape in a method for producing the fine metallic wire by said drum by changing the direction of the revolving shaft of the drum from a horizontal to vertical direction in the stage of stopping the drum. CONSTITUTION:A rotary cylindrical drum 5 is rotated while its revolving shaft is maintained horizontal and the cooling liquid 7 therein is held on the circumferential surface of the drum by centrifugal force. A molten metal 2 is ejected from a nozzle 4 at the tip of a crucible by the pressure of gaseous Ar, is cooled to solidify by a liquid 7 and is held as a fine wire 8 on the circumferential surface of the drum. The crucible 1, the nozzle 4 and a heater 4 are drawn out to the outside of the drum 5 upon completion of the injection and thereafter the entire part of the device is rotated by 90 deg. around a pin 12 while the drum 5 is rotated so that the shaft 11 is changed from a horizontal to vertical direction. When the rotation of the drum 5 is slowly reduced and is stopped, the liquid 7 gathers on the base of the drum, and is discharged through the shaft 11 and a hollow hole 13, thus leaving only the bundle of a fine wire 8. Said wire is taken out without collapsion in its shape.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to the termination of molten metal spouting in the case of manufacturing thin metal wires having a circular cross section directly from molten metal.

This invention relates to a manufacturing method that is particularly effective during shutdown.

In recent years, amorphous alloys have been useful as materials for various types of 1Q.

A method for manufacturing thin metal wires with circular cross sections from microcrystalline alloys and non-ductile alloys has been proposed9, for example, in JP-A-55-649.
No. 48, JP-A No. 56-165016, etc. employ a spinning method in a rotating liquid. In this method, a cooling liquid layer is formed by centrifugal force in a cylindrical drum that rotates nine times, and molten metal is ejected into this cooling liquid layer.

The thin wires are cooled and solidified, and then pressed against the inner circumferential wall of the drum by centrifugal force (t). ,
When the spouting of molten metal is finished and the rotating drum is stopped, this bundle of thin wires falls downward into the drum along with the cooling liquid.
At that time, the thin wire bundle loses its shape and has the disadvantage of falling apart or getting tangled. In addition, stitching may occur during unwinding, resulting in wire breakage, which is undesirable from a practical standpoint.

In order to eliminate the drawbacks of the conventional method as described above, the inventors of the present invention have conducted various studies to prevent the bundle of thin wire wound up on the inner peripheral surface of the drum from falling when the 9-turn cylindrical drum is stopped. We focused on the fact that all you have to do is to maintain the bundle without losing its shape and take it out as a bundle from the drum or pull it out from the terminal.

This has led to the present invention.

In other words, when the rotating cylindrical drum is stopped, the present invention changes the direction of the rotating shaft, on which the rotating cylindrical drum is fixed at the shaft end, from horizontal to vertical, thereby preventing the cooling liquid and metal wire bundle inside the cylindrical drum from falling. The present invention provides a manufacturing method that prevents this.

The metal applicable to the present invention is a pure metal.

Examples include metals containing trace amounts of impurities or all alloys, but especially alloys that have excellent properties when rapidly solidified.For example, alloys that form an amorphous phase or alloys that form a non-equilibrium crystalline phase. This is the most preferred alloy. Specific examples of alloys that form the amorphous phase include 8, for example, "Cyenne" No. 8, 1978, 62-72.
Page 1 Bulletin of the Japan Institute of Metals, Vol. 15, No. 6, 1976
pp. 151-206, [Kin 1ii”, J1971, 12
Documents such as the 1st issue of the month, pages 73-78, and JP-A-49-910
No. 14, JP-A-50-101215, JP-A-49-1
No. 35820, JP-A No. 513'512, JP-A No. 51-
No. 4019, JP-A-51-65012, JP-A-4)1
-73920, JP-A-51-73923, JP-A-5
No. 1-78705.

JP-A-51-79613, JP-A-52-5620,
JP-A-52-114421, JP-A-54-99035
As stated in many publications such as No. Among these alloys, typical examples that have excellent amorphous formation ability and are practical alloys include F'e Si B system,
Fe-P-C system.

re-P-B system, Co-3i-B system, Ni-3i-
Examples include the I3 series, but the type is gold 1. Back - Hankin 1
1 combination.

It goes without saying that there are a large number of metal-metal combinations to choose from. Furthermore, by taking advantage of the characteristics of its composition, it is possible to assemble an alloy that has 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" Volume 66 (19
80) No. 6, pp. 682-389, “Journal of the Japan Institute of Metals”
Volume 44, No. 3.

1980, pp. 245-254, l'-TRANSA
CTIONS OF' THE JAPAN lN5T Engineering TUTg OF' METALS J VOL 204
8. August 1979, 468-471 pages 1 Japan Institute of Metals Autumn Conference General Purchase Summary Collection (October 1979) 3
Fe-Cr-Al alloys and re-Al-C alloys described on pages 50 and 351, and Mn − described on pages 423 to 425 of the 9 Japan Institute of Metals Annual Conference General Lecture Summary Collection (November 1981). AI-C alloy.

Examples include Fe-Cr-Al alloy, Fe-Mn-AI-C alloy, and the like.

The method of the present invention will be explained in more detail below with reference to the drawings.

Figure 1 shows a metal thin film using a conventional rotating cylindrical drum. IjI
This is an example of a manufacturing apparatus, in which molten metal (2) is heated in a μ pot (1) by a heater (3) (for example, siliconite or high frequency heating is used).

The two-rotation cylindrical drum (5) is rotationally driven by a motor (6), and the cooling liquid (7) in the drum (5) is pressed against the inner peripheral surface of the drum (5) by centrifugal force. The molten gold R (2) is ejected from the nozzle /l/ (4) at the tip of the pot (1) by pressurizing the argon gas, enters the cooling liquid (7) inside the tube, and is cooled and solidified to become a thin wire (8). The thin wire (8) is drawn onto the inner circumferential surface of the drum (5) by centrifugal force, but at this time, the nozzle w (4) is traversed in the axial direction of the drum (5), so that the thin wire (8) is drawn onto the inner circumferential surface 1 of the drum (5). It accumulates in bundles.

This conventional method (according to this), after the ejection of the weld metal (2) from the nozzle (4) is completed, the /L/ pressure point (1) and the heater (3) are pulled from the inside of the drum (5) to the outside, Extrusion 1
When the rotating drum (5) is stopped, the cooling liquid (7) and the bundle of thin wires (8) will fall down inside the drum (5), and at this time the bundle of #I wires (8) will lose its shape. be. In such a device, even if a support rod is attached to prevent the thin wire bundle from falling downward into the drum during the fall, it is difficult to completely prevent the bundle from deforming. In addition, if the rotating cylindrical drum is made loose and then stopped, the centrifugal force will gradually decrease, causing the cooling liquid layer to become severely undulated and the thin wire bundle to collapse. Furthermore, if the motor is suddenly stopped using the brake, the cooling liquid will fall all at once, causing the motor to lose its shape.

An embodiment of the manufacturing method of the present invention will be explained with reference to FIGS. 2 and 6. FIG. 2 shows a state in which the rotating shaft (b) of the drum is in a horizontal state during manufacturing; A rotating cylindrical drum (5) fixed to the shaft end is driven by a motor (8) via a timing bell Ill→, and the molten metal (2
) is ejected as a jet from the nozzle tv (4) at the tip of the crucible (1) due to the pressurization of argon gas.

It is held as a thin wire (8) on the inner peripheral surface of the drum.

At this time, the nozzle /I/(4) is in the vertical direction, and the state of ejecting the molten metal is very stable.

Next, when the ejection of the molten metal (2) from the nozzle/l/(4) is completed, the crucible (1), nozzle (4) and heater (3) are removed from the drum (5) as shown in Figure 6. After pulling it out, keep the 9-turn cylindrical drum (5) rotating and load it.
The entire row is rotated by 90° about the pin @, and the axis of rotation Qυ, which was in the horizontal direction, is now in the direction of the lead. That is, the rotating cylindrical drum (5) is placed in a supine position Qjl. At this time (this pedestal C1t3 is temporarily closed).

After being pulled downward from the position shown in FIG. 2, the bag gap is rotated 900 times, and then returned to the predetermined position once again to place the device 4 in a stable state. Next, when the rotation of the rotary circular drum (5) is slowly stopped, the cooling liquid (7) in the drum (5) loses centrifugal force and the bottom surface of the drum (5) gathers around the rotating shaft (b) and the hollow It is discharged through the hole (to) and the discharge port (→().

Only the bundle of thin wires (8) remains inside the drum (5). In this way, the bundle of thin wires (8) can be taken out without losing its shape.

Note that, unlike the method of the present invention, it is also possible to set the rotating shaft of the rotating cylindrical drum approximately vertically from the beginning of spouting molten metal, and then stop it as it is when the jetting ends. Although it is desirable to have cooling in this case, the water surface of the air body is vertical, so it is necessary to bend the direction of the nozzle in the horizontal direction.
This type of groove construction for the nozzle is so complicated that it cannot be put to practical use.

Since the method of the present invention involves the above-mentioned purchasing, it is a relatively simple method that can prevent the cooling liquid and the metal wire bundle from falling during the operation stop (F), and also prevent the unavoidable disturbance of the wire bundle.
When unpacking! It is extremely superior in workability and economy, as it eliminates the generation of lines and IFJf lines.

Next, the present invention will be specifically explained using examples.

Example 1 Fe7e Si□sB. (The subscript is atomic%) is melted and ejected by a rotating cylindrical drum with a diameter of 50 ow and a medium size of 80111 at a rotation speed of 34 Or, p, m, ,
) When a thin metal wire with a diameter of 150 μm and a length of 2000 m was manufactured using the method of the present invention at a wrapper speed of 10 cN/min, it was possible to take it in the form of a bundle without losing its shape in the drum.

Example 2 COtg, s Siu, s B 15 (subscripts are atomic%
) is melted and spouted, with a diameter of 5QQ,
Rotating cylindrical drum with a width of 80 rpm at a rotation speed of 10 r,p
, m, , ) When a fine metal wire with a diameter of 130 μm and a length of 1000 m was manufactured using the method of the present invention at a Raverne speed of 8 a/min, it was possible to take it in a bundle without losing its shape in the drum.

[Brief explanation of drawings]

Fig. 1 shows a conventional apparatus for producing fine metal wires using a rotating cylindrical drum; Figs. 2 and 3 show examples of embodiments of the apparatus for producing fine metal wires that can be used in the method of the present invention; The aspect of
FIG. 3 shows the state when the rotating cylindrical drum is stopped. (1)... Crucible, (2)... Molten metal, (3)
... Heater, (4) ... Xtv, (5) ... Rotating cylindrical drum, (6) ... Mop, (v) ... Cooling liquid, (8) ... Metal axis , (9) ... Frame patent applicant Unitika Co., Ltd.

Claims (1)

[Claims] (1) Molten metal is ejected from a nozzle into the liquid of a rotating cylindrical drum that has a cooling liquid on its circumferential surface by centrifugal force, and the molten metal is cooled and solidified to form thin metal wires on the circumferential surface of the rotating cylindrical drum. In the method for manufacturing fine metal wire, the nozzle remains vertical even after the molten metal has finished spouting, but the rotating shaft with a two-rotation cylindrical drum fixed at one end remains horizontal while the molten metal is spouting. A method for producing a thin metal wire, which comprises rotating the thin metal wire vertically after completion of the process, and then stopping the operation.