JPH0478389B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an 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-56-165016, JP-A-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 as a jet into the liquid layer. 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 continued to conduct intensive research into the development of manufacturing equipment and manufacturing techniques for spinning in a rotating liquid as disclosed in the above-mentioned disclosures, but have now come across a major obstacle. The reason is that these rotating liquid spinning methods are batch type. In other words, in these methods, a cooling liquid layer is formed on the circumferential surface of a rotating cylindrical drum by centrifugal force, and by keeping the surface and interior of this cooling liquid layer stable, the molten metal flow ejected as a jet is to stably enter the cooling liquid layer without disturbance,
Moreover, after the molten metal stream is rapidly solidified, it is stably wound around the inner wall of the cylindrical drum by centrifugal force to form a desired thin metal wire. An example of this will be explained in more detail with reference to FIG. 1. The procedure for manufacturing fine metal wires by the rotating liquid spinning method is as follows: First, a predetermined amount of a master alloy having a predetermined alloy composition prepared in advance is heated to The molten metal is charged into a melting furnace 2 equipped with a molten metal, heated and melted to form a molten metal 3, and then ejected from a nozzle 4 having a predetermined hole diameter provided at the tip of the furnace 2. Next, the cylindrical rotating drum 5 (hereinafter abbreviated as drum) is rotated at a predetermined number of rotations, and a predetermined amount of cooling liquid 6 is supplied from a supply device (not shown). Subsequently, the melting furnace system (heating device 1 and melting furnace 2) is set at a predetermined position in the space inside the drum 5 as shown. Thereafter, an inert gas is introduced at a predetermined pressure through a pipe 7 communicating with the melting furnace 2, and pressure is applied to the molten metal 3, so that it is jetted out from the nozzle 4 as a jet 8. The jet 8 enters the rotating cooling liquid 6, 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 drum 5. In this case, since the thin metal wire 9 usually needs to be wound up to a certain length, the melting furnace system (the heating device 1 and the melting furnace 2) is traversed 10 in the width direction of the inner circumference of the drum 5. After all of the initially charged master alloy has been ejected, the melting furnace system is moved outward from the space of the drum 5, and then the rotation of the drum 5 is stopped, and the cooling liquid 6 is no longer held by centrifugal force and falls. The bundle of thin metal wires produced on the circumferential surface of the drum 5 is taken out after being stored in a container (not shown). Conventional manufacturing equipment for the rotating liquid spinning method has been a batch-type manufacturing equipment in which such a procedure is performed in one cycle. Therefore, as can be easily surmised, such manufacturing equipment is limited in the amount of fine metal wire produced per batch due to constraints imposed by the size of the machinery and equipment, and the amount of fine metal wire produced per batch is limited. Due to the fact that it requires time for post-processing and other reasons, it has the drawback of extremely low productivity, and the reality is that it is difficult to commercialize it.

The present inventors have developed an apparatus for continuously producing thin metal wires with low processing costs, which overcomes the above-mentioned obstacles of conventional production equipment, takes advantage of the basic features of the spinning submerged spinning method, and significantly increases productivity. It provides:

That is, in the apparatus of the present invention, two cylindrical drums having the same inner and outer diameters are installed horizontally in series with a predetermined gap between them so that they can rotate in the same manner, and the circumferential surface of the drums is placed between the gap and the inner peripheral surface of both drums near the gap. A cooling liquid layer is formed with the side plate of the liquid tank provided, and a seal ring is slidably fitted on each of the outer peripheral surfaces of both ends of the drum in the gap, and a guide roller is brought into contact with the seal ring. , the guide roller is arranged in advance so that the seal ring draws a trajectory such that it is closed at the upper position of the drum and opened at the lower position of the drum, and when the seal ring is opened at the lower part of the drum, the guide roller covers the seal ring gap and comes into contact with the seal ring. It is equipped with an endless running belt that takes the rapidly solidified thin metal wire, sends it out of the liquid layer, and guides it to the winding device. This continuous manufacturing apparatus for thin metal wire is characterized in that the metal injection device is inserted into the drum from the outside and placed above the seal ring gap.

Hereinafter, one embodiment of the apparatus of the present invention will be described in detail with reference to FIGS. 2 to 5.

FIG. 2 is a longitudinal sectional view of the device, in which two cylindrical drums 15, 15' with the same inner and outer diameters are connected to a bearing 21,
21', and horizontally installed in series with a predetermined gap 22 so as to be able to rotate in the same manner.
Rotary movement of the same device is provided by 23'.
Moreover, both the cylindrical drums 15 and 15' have a gap 22
Liquid tank side plates 24, 24' are provided around the inner peripheral surface of the tank, and a cooling liquid layer having a constant width and depth is formed between the side plates 24, 24' and the gap 22. Furthermore, seal rings 25 and 25' are slidably fitted onto the outer circumferential surfaces of the ends of both drums 15 and 15' in the gap 22, and a guide roller 26 is fitted onto both seal rings 25 and 25'. Both seal rings 25, 2 are brought into contact with each other.
It is set to provide a constant orbital opening and closing movement in which the drum 5' is closed when it is in the upper position of the drum and opened when it is in the lower position. This opening/closing movement will be described later. Reference numeral 27 designates an endless running belt, which is wound around belt pulleys 28 to 28'' below the drums 15, 15', as shown in the side view in FIG. The seal ring covers the gap 29 and runs at the same speed as the circumferential speed of the drums 15, 15' to pick up the thin metal wire 19 rapidly solidified in the liquid layer, send it out of the liquid layer, and send it to the winding device 30. It is something that guides. 31 is a separator roller. FIG. 3 also illustrates the manner in which the guide rollers 26 are arranged. The running belt 27 is brought into contact with the lower part of the cylindrical drums 15, 15' so as to sandwich the seal rings 25, 25' with the outer peripheries of the drums, and this contact is made within about 135 degrees with respect to the center of rotation of the drums. The belt pulleys 28, 28'' are arranged so as to form an arc range. FIG. 4 is a conceptual diagram of the opening and closing movement of both seal rings 25, 25'.
Temporarily, both seal rings 25 and 25' are attached to the cylindrical drum 1.
In the plan development view assuming that the cut is made at the highest apex of 5, 15', the 0° of the highest apex is the seal ring 25, 2.
When 5′ is closed, the 180° facing the cylindrical drum 15,
Seal ring 25,2 in the lower position of 15'
5' is shown when it is open. seal ring 25,
25' is subjected to the opening/closing sliding movement by the guide roller 26, so it has hardness that can follow the opening/closing movement, and has a contact surface with the cylindrical drum, a contact surface between both seal rings, and a contact surface with the running belt. It is necessary to select a material that has elasticity and a coefficient of friction that will prevent liquid leakage on each surface. FIG. 5 is an enlarged view of the main parts of FIG.
15' is closed by position regulation of the guide roller 26 at the upper position. Numerals 32 and 32' are lubricating mechanisms that facilitate sliding of the seal rings 25 and 25'. In this embodiment, a liquid groove 33 is provided to simplify the supply of cooling liquid, and for this purpose, the inner and outer diameters of the ends of both drums 15, 15' of the liquid groove forming portion are increased. In this case, the cooling liquid is supplied from the liquid groove 33, flows through a hole formed in a part of the liquid layer side plate 24, and overflows the liquid layer side plate 24' on the opposite side, thereby forming a stable cooling liquid layer. Furthermore, the overflowing cooling body is circulated through a cooler (not shown) to keep the liquid temperature constant. Note that the running belt 27 has a thin metal wire 19.
An auxiliary member such as a magnet 34 may be provided in order to ensure that the material is picked up smoothly. 35, 35' are holders for the guide roller 26. Also, molten metal 13, melting furnace 12, heating device 11, nozzle 14
The metal ejection device equipped with a cylindrical drum 15,1
5' is operated to form a cooling liquid layer, it is inserted into the cylindrical drums 15, 15' from the outside and placed above the seal ring gap 29, after which a fine metal wire is manufactured. 17 is an inert gas introduction pipe.

Since the manufacturing device of the present invention has the above-described configuration, it is possible to continuously manufacture thin metal wires even though the device is not large in size, so that the manufacturing amount can be significantly increased, and productivity can be improved. Since the temperature of the cooling liquid can be kept uniform at all times, the resulting thin metal wire is homogeneous in all parts, making it an extremely excellent manufacturing device.

Metals applicable to the present invention include pure metals, metals containing trace amounts of impurities, and all alloys, but in particular, alloys with excellent properties, such as forming an amorphous phase, can be formed by rapid solidification. The most preferred alloys are alloys that form a non-equilibrium crystalline phase or alloys that form a non-equilibrium crystalline phase. For example, "Science" No. 8, 1978, pp. 62-72, Bulletin of the Japan Institute of Metals, Vol. 15, No. 3, 1976, pp. 151-206, and "Metals"
Documents such as the December 1, 1971 issue, pages 73-78, and JP-A-49
−91014, Japanese Patent Application Publication No. 1973-101215, Japanese Patent Application Publication No. 1973-
No. 135820, JP-A-51-3312, JP-A-51-4017
No., JP-A-51-4018, JP-A-51-4019, JP-A-51-65012, JP-A-51-73923, JP-A-51-
No. 78705, JP-A-51-79613, JP-A-52-5620
No. 52-114421, Japanese Patent Application Laid-Open No. 54-99035, and many other publications. Among these alloys, Fe-Si-B is a representative alloy that has excellent amorphous formation ability and is a practical alloy.
system, Fe-P-C system, Fe-P-B system, Co-Si-B
Examples include Ni-Si-B system, Ni-Si-B system, etc., but it goes without saying that a large number of types can be selected from metal-semimetal combinations and metal-metal combinations.
Furthermore, by taking advantage of the characteristics of its composition, it is possible to assemble an alloy with 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.
“TRANSACTONS OF THE
JAPAN INSTITUTE OF MEMALS” VOL20
No.8AUgust1979 pages 468-471, Fe-Cr-Al alloys, Fe-Al-C alloys, and Nippon Metals described in Collected Summaries of General Lectures at the Autumn Conference of the Japan Institute of Metals (October 1979), pages 350 and 351. Collection of summaries of general lectures at the autumn meeting of the academic society (1981)
Examples include Mn-Al-C alloys and Fe-Mn-Al-C alloys described on pages 423 to 425 (November 2013).

[Brief explanation of the drawing]

Fig. 1 is a schematic longitudinal cross-sectional view of a conventional device, Fig. 2 is a longitudinal cross-sectional view of an embodiment of the device of the present invention, Fig. 3 is a side view of Fig. 2, and Fig. 4 is a seal ring opening and closing. A conceptual diagram of the movement is shown, and FIG. 5 is an enlarged view of the main part of FIG. 2. 1, 11... heating device, 2, 12... melting furnace,
3,13... Molten metal, 4,14... Nozzle,
5, 15, 15'...Cylindrical drum, 6...Cooling liquid, 8...Jet, 9,19...Thin metal wire, 2
2... Gap, 23, 23'... Timing pulley,
24, 24'...Liquid tank side plate, 25, 25'...Seal ring, 26...Guide roller, 27...Travel belt, 28-28''''...Belt pulley, 29
... Seal ring gap, 30 ... Winding device, 3
2, 32'...Lubrication mechanism, 33...Liquid groove, 34...
...Magnet.

Claims (1)

[Claims] 1 Two cylindrical drums having the same inner and outer diameters are installed horizontally in series with a predetermined distance between them so that they can rotate in the same way, and a liquid is placed around the inner circumferential surface of both drums near the gap between the drums. A cooling liquid layer is formed with the tank side plate, and a seal ring is slidably fitted on each of the outer circumferential surfaces of both ends of the drum in the gap, and a guide roller is brought into contact with both seal rings. The guide roller is arranged in advance so that the seal ring draws a trajectory such that it is closed at the upper position of the drum and opened at the lower position of the drum, and when the seal ring at the lower part of the drum is opened, the guide roller is placed so as to cover and abut between the seal rings. It is equipped with an endless running belt that takes the rapidly solidified thin metal wire, sends it out of the liquid layer, and guides it to the winding device. 1. A continuous manufacturing apparatus for thin metal wire, characterized in that the metal ejection device is inserted into the drum from the outside and is arranged above the gap between the seal rings.