JPS6096349A - Method and device for continuous production of fine metallic wire - Google Patents

Abstract

PURPOSE:To eject a molten metal into liquid flow and to produce continuously a fine metallic wire by the construction consisting of providing two cylindrical rotary drums in a threading spacing so as to face each other, providing successively the drums in series, bringing an endless flat belt into tight contact with the outside circumference of the spacing to form a groove bottom, pouring a cooling liquid from above, forming a liquid layer by centrifugal force and taking out said layer from below. CONSTITUTION:The respective thick walled ends 13, 13' of the entire circumference of two pieces of cylindrical rotary drums 11, 11' having the same diameter are provided to face a prescribed threading spacing and are successively provided in series in a way that the drums can be simultaneously rotated. An endless flat belt 15 is brought into tight contact with the greater part of the threading spacing by means of a driving pulley 16 and plural pulleys 17, 18, 19 on the outside circumferential surface of the threading space and at the same time both drums 11, 11' are simultaneously rotated by the pulley 16. A liquid pouring part 21 is provided near the upper point where the belt 15 contacts tightly the space first and a liquid taking out part 22 and a port 32 for taking out a fine metallic wire are provided near the lower point off the threading space. The top end of a nozzle 28 is disposed in a part above a liquid groove 20 when a liquid layer is formed in the groove 20.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for 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 establishment of this technology is progressing rapidly. That is, JP-A-56-1
No. 65016, JP-A No. 57-52550.

JP-A No. 57-79052, etc., and the feature of these prior art is that a liquid layer is formed by centrifugal force on the circumferential surface of a rotating cylindrical drum, and molten metal is ejected into the liquid layer as a jet. According to these methods, thin metal wires with a circular cross section and excellent properties can be easily obtained, and the cooling rate is faster than that of conventional methods. It is recommended that it can be made extremely large and is particularly suitable for manufacturing thin metal wires made of amorphous metals or metals containing fine crystal grains.

The inventors of the present invention have been diligently researching the development of manufacturing equipment and manufacturing technology for the spinning submerged spinning method as disclosed in the above-mentioned disclosure, but have now come across a major obstacle. The reason is that these rotating liquid spinning methods are hatch type. In other words, to explain these methods, a cooling liquid layer is formed by centrifugal force on the circumferential surface of a cylindrical tram that rotates five times, and by keeping the surface and inside of this cooling liquid layer stable, the molten metal flow ejected as a jet is After the molten metal flow stably enters the cooling liquid layer without disturbance and is rapidly solidified, it is stably wound around the inner wall of the cylindrical wire by centrifugal force to form a desired thin metal wire. This is a characteristic feature.

An example of this will be explained in more detail with reference to FIG.
First, a predetermined amount of a pre-prepared master alloy having a predetermined alloy composition is charged into a melting machine 2 equipped with a heating device 1.
The metal is heated and melted to form a molten metal 3, which is then placed on standby for ejection from a nozzle 4 with a predetermined hole diameter provided at the tip of the furnace 2. Next, the cylindrical rotating drum 5 (hereinafter abbreviated as tram) is rotated at a predetermined number of rotations, and a predetermined amount of cooling liquid 6 is supplied from a supply device (not shown). Next, the melting furnace system (heating device 1
Then, the melting furnace 2) is placed at a predetermined position in the space inside the drum 5 as shown. After that, inert gas is introduced at a predetermined pressure through the pipe 7 leading to the melting furnace 2, and
g Pressure is applied to the molten metal 3, and the gen from the nozzle 4].
Make it squirt as 8. Jet 8 is a rotating cooling liquid 6
It penetrates into the interior, rapidly solidifies, and becomes a thin metal wire 9 (shown as a dotted cross section).

It is wound up on the inner wall of the L-ram 5. In this case, the thin metal wire 9 usually needs to be wound up to a certain length, so the melting furnace system (heating device 1 and

The melting furnace 2) traverses 1 in the width direction of the inner circumference of the IS ram 5.
Set it to 0. After all the initially charged master alloy has been ejected, the melting furnace system is moved outward from the space of the drum 5,
Next, the rotation of the drum 5 is stopped, and the cooling liquid 6 that is no longer held by the centrifugal force and falls is stored in a container (not shown), and then the bundle of thin metal wires manufactured on the circumferential surface of the drum 5 is taken out = 5 − is. A hatch-type production apparatus in which such a procedure is performed as one cycle is a conventional production apparatus for spinning in a rotating liquid. Therefore, as can be easily inferred.

Such manufacturing equipment limits the amount of fine metal wire produced per batch due to restrictions imposed by the size of the machinery and equipment, and requires time for pre-preparation and post-processing for each batch. For various reasons, it has the drawback of extremely low productivity, and the reality is that it is extremely difficult to commercialize it.

The inventors have overcome the obstacles of conventional manufacturing equipment.

In addition to making use of the basic characteristics of the rotating liquid spinning method,
It is an object of the present invention to provide a method and apparatus for continuously manufacturing fine metal wires at low processing costs and which significantly increases productivity.

An embodiment of the device of the present invention will be described below. This will be explained in detail with reference to FIG.

Figure 2 is a longitudinal sectional view of the main part of the device, with two pieces having an outer diameter of 600 mm.
One end of each of the cylindrical drums 11.11' having the same diameter as φ is provided with a thick end 1 over the entire circumference to form a liquid groove 6 and a side wall 12.12' to obtain a liquid depth of 20 mm.
3.13', both thick ends 13.13' of one F ram 11.11' are set opposite to each other at a predetermined threading interval of 30 mm, and can be rotated simultaneously by bearings 14.14" hair ring B, etc. 15 is an endless flat heald, and the healds 1 to 15 have a width of 50 mm and are connected to the liquid groove side wall 12.
It has a width that covers 12', that is, a threading interval of 30 mm.

As shown in FIG. 3 (schematic side view of the device of the present invention), the drive pulley 16 and the turn pulleys 17, 18, and 19 are used to close most of the yarn threading interval circumference, and the heald running speed is 6.
Both drums 11.11° are rotated at 00 m/min and serve as the groove bottoms of the liquid grooves 20.

Reference numeral 21 denotes a liquid injection part provided at the upper side where the rotating heald 15 first comes into close contact with the thread threading interval to form the liquid groove 20;
A stable cooling liquid layer is formed in the liquid groove 20 by the centrifugal force caused by the rotation of the first drum LL 11', and the cooling water is continuously supplied from the core part 2 to a stable cooling liquid layer in the liquid groove 20. The liquid take-out portion 22 near the lower part where
The liquid is taken out from the tank, enters the water receiving tank 23, is adjusted to 5° C. by the pump 24 via the cooler 25, and is then supplied to the liquid injection section 21.

Rotate both drums 11.1.1'' by heald 15.

After cooling water is supplied to the liquid groove 20, a thin metal wire is then spun. 26 is a melting furnace equipped with a heater 27, and the tip of the melting furnace 26 has a hole diameter of 0. 15mm
One φ nozzle 28 is installed, and Fe75 atomic %
, 5ilo atomic %, and 1315 atomic % are supplied into the melting furnace 26 in an argon atmosphere through the supply pipe 29 , and the molten metal 30 melted at 1300° C. is partially on the liquid groove 20 . The nozzle 2 whose tip is arranged at
From 8, argon gas is applied to the cooling water of 4.5 kg/c+a continuously and rapidly cooled and solidified by applying a pressure of 4.5 kg/c+a to the liquid groove 20 to form a fine metal wire 31. The thin metal wire was separated from the cooling water through a take-out port 32 provided in the drum, and was continuously taken out of the drum, and continuously wound up using a winding machine 33 provided separately.

The obtained 50,000 m long continuous thin metal wire has a straight i-thread of 0.1
5mmφ, its cross section is almost a perfect circle, and its tensile strength at break is 3.
55kg/mm2. The elongation at break was high, 3.5%, and when the thin metal wire was examined for crystallinity by X-ray diffraction, only a broad diffraction peak characteristic of an amorphous state was observed.

Since the present invention has the above-described configuration, it is possible to continuously manufacture thin metal wires even though the apparatus does not require a huge amount of equipment, so that the amount of manufacturing can be significantly increased.

This is an extremely excellent manufacturing method and apparatus in which productivity is improved and the temperature of the cooling liquid can be kept constant at all times, so that all parts of the obtained thin metal wire are homogeneous and highly strong.

The metals applicable to the present invention include pure metals, metals containing trace amounts of impurities, and all alloys, but especially alloys 1 that have excellent properties when rapidly solidified, such as forming an amorphous phase. The most preferred alloys are alloys or alloys that form non-equilibrium crystalline phases. For example, "Science No. 8, 1978, pp. 62-72 1 Bulletin of the Japan Institute of Metals Vol. 15, No. 3, 1976, pp. 151-20
6 pages, [Metal J December 1971 issue, 73-7
Documents such as 8 pages and JP-A 1972-91014, JP-A 1972-1973
-101215, JP-A-49-135820.

JP-A-51-3312, JP-A-51-4017, JP-A-9-51-4018, JP-A-51-4019, JP-A-5
1-65012, JP-A-51-73923, JP-A-451-78705, JP-A-51. -79613,
This is as described in many publications such as JP-A-52-5620, JP-A-52-114421, and JP-A-54-99035. Among these alloys, Pe
-5i-B system, Fe-P-C system, Fe-P-B system C
Examples include o-3i-B series, Ni-3i-B series, etc.
Needless to say, there are a wide variety of types that can be selected from metal-metalloid combinations and metal-metal combinations. 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. A specific example of an alloy that forms a non-equilibrium crystalline phase is 1, for example, "Tetsu to Hagane" Vol. 66 (1980) No. 3, pp. 382-389.

“Journal of the Japan Institute of Metals” No. 44 @ No. 3, 1980/24
Pages 5-254, rTRANsAcTONs OF T)
IE JAPAN INSTITUT [! OF MEMA
LS JνOL 2ONa 8 August 197
Pages 9468-471 9 Fe-Cr-Al alloys 10-gold, Pe-AI-C alloys and Nippon Metals described on pages 350 and 351 of the Japan Institute of Metals Autumn Conference General Lecture Abstracts (October 1979) Mn-AI-C alloy, re-Mn-AI-, described in the General Conference Abstracts of the Academic Conference (November 1981), pages 423-425.
Examples include C-based alloys.

[Brief explanation of drawings]

FIG. 1 is a schematic vertical cross-sectional view of a conventional device, FIG. 2 is a vertical cross-sectional view of essential parts of a device according to an embodiment of the present invention, and FIG. 3 is a schematic side view of the entire device. 11, 11'... Cylindrical tram, 12.12'...
・Liquid groove side wall. 13, 13'...Thick end portion, 14.14'...Bearing, 15...Endless heald, 16...Drive pulley, 17.18.19...Turn pulley, 20...
-Liquid groove, 21...Liquid injection part, 22...Liquid extraction part, 26...Melting furnace, 27...Heater, 28...
- Nozzle, 29... Supply pipe, 30... Molten metal, 31... Fine metal wire, 32... Fine metal wire outlet, 3
3... Winding machine. Patent distributor Unikorikiki Co., Ltd. 831 Rod 2 Cause

Claims (2)

[Claims] (1) The entire circumference of one end of each of the two cylindrical rotating drums with the same diameter consists of a thick end that will become the side wall of the liquid groove from now on.
The thick end portions of both drums are arranged opposite to each other at a predetermined thread threading interval, and are connected in series so as to be able to rotate simultaneously, and on the outer circumferential surface of the thread threading interval, there is an endless ring having a width that covers the threading interval. The drum is rotated by bringing the belt into close contact with most of the gap using a plurality of pulleys including a drive pulley, and by bringing the heddle into close contact with the gap, the heald serves as the bottom of the groove to cool only the part that constitutes the liquid groove. The device operates with a structure in which liquid is injected from the top side, a stable cooling liquid layer is formed by centrifugal force, and then taken out from the bottom side.The nozzle attached to the melting furnace is placed inside the drum to generate a rotating cooling liquid flow. A flow of molten metal is ejected into a part of the
1. A method for continuously manufacturing a thin metal wire, which comprises rapidly cooling and solidifying the thin metal wire, and then continuously taking out the thin metal wire from the lower side of the liquid groove component and winding it up. (2) One end of each of the two cylindrical rotary drums having the same diameter is provided around the entire circumference as a thick end suitable for obtaining a desired liquid depth, which will later be used as a side wall of the liquid groove. The thick end portions of both drums are arranged in series so as to be able to rotate simultaneously with the thick end portions of both drums facing each other at a predetermined thread threading interval, and an endless drum having a width that covers the thread threading interval is provided on the outer circumferential surface of the thread threading interval. At the same time, the heald is brought into close contact with most of the gap by a plurality of bobbins including a drive pulley, and only the belt-contacting part is formed in the liquid groove as the bottom surface of the liquid groove. It has a structure in which both drums are rotated simultaneously by a drive pulley, and a liquid injection part is provided near the upper side where the rotating belt first comes into close contact with the thread threading interval, and the other belt is located near the upper side where the rotating belt first comes into close contact with the thread threading interval. A liquid take-out part and a thin metal wire take-out port are provided near the lower part where the liquid comes off further, and when both drums rotate and a liquid layer is formed in the liquid groove. Continuous production of thin metal wire, characterized by having a structure in which a metal melting device equipped with a nozzle is inserted into a drum from the outside, and the tip of the nozzle is placed on a part of the liquid groove at an interval of two threads. Device.