KR101600881B1 - Multi Cooling System for Producing Metal and Alloy Spherical Powders - Google Patents

Abstract

The purpose of the present invention is to provide a multiple cooling system to manufacture metal and alloy spherical powder, which can efficiently manufacture metal and alloy spherical powder having excellent material properties caused by homogenization of compositions, improved solid solubility, and refinement of a structure due to a continuous cooling being carried out on molten metal and molten alloy by two methods; a centrifugal atomization and a water curtain. In order to achieve this purpose, the multiple cooling system to manufacture the metal and the alloy spherical powder, comprises: a furnace which receives a raw material of a metal material or an alloy material therein, melts the raw material by a heating induction coil to manufacture molten metal, and includes a discharge port to flow out the molten metal on a bottom; a centrifugal cooling part positioned corresponding to the discharge port on a lower part of the furnace, rotates to be able to contact with the molten metal flowed into the discharge port of the furnace, and scatters the molten metal in a powder form for primary cooling; a water curtain part arranged on the lower part of the furnace to receive the centrifugal cooling part, and forms a water curtain, into which water is supplied from the outside, and with which spherical powder scattered from the centrifugal cooling part contacts to secondarily cool the spherical powder. In regards to this, the water curtain part comprises: a cylindrical body which supports and contacts with the spherical powder scattered simultaneously with cooling from the centrifugal cooling part such that the spherical powder crashes into the cylindrical body; a water supply unit coupled to an upper part of the cylindrical body, into which water is supplied from the outside; and a water nozzle arranged on a top of an inner periphery of the cylindrical body, forms a nozzle hole able to spray water by communicating with the water supply unit, and sprays water by applying pressure such that water in the cylindrical body may be flowed down in a curtain form.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a multi-cooling system for producing metal and alloy spherical powders,

The present invention relates to multiple cooling systems for the production of metal and alloy spherical powders and, more particularly, to continuous cooling of molten metal and molten alloy with a water curtain with centrifugal spraying to improve the solidification rate, And more particularly to a multiple cooling system for the production of metal and alloy spherical powders capable of efficiently producing spherical powders of metals and alloys having better physical properties due to homogenization of the powders,

In order to achieve the rapid development of the electronics industry, the spread of electronic devices, and the improvement of the processing speed, it is necessary to produce a fine metal powder which is chemically stable and excellent in conduction, To be established.

As a representative technique for producing such a metal powder, a rapid solidification process is used. That is, the rapid solidification method manufactures spherical powder for various mechanical parts such as aluminum alloy, copper alloy and stainless steel as well as functional alloy such as hard magnetic material, soft magnetic material, hydrogen storage alloy material and thermoelectric material .

Generally, the rapid solidification method includes a water atomization method, a gas atomization method, and a gas atomization method, which are techniques for blowing a fluid or a gas at a high speed into a metal molten metal which is spouted when metal powder is produced from a molten metal, ), And centrifugal atomization in which particles are atomized by the centrifugal force of a cup or disk rotating at a high speed.

Here, the sphere powder producing apparatus used for producing various metals and alloy powders by the gas spraying method is roughly described as follows. The furnace is provided with a heating furnace for dissolving the raw material alloy. In the heating furnace, a high- And the alloy are heated to melt, and the molten raw material is passed through the gas injection nozzle to be dispersed at a high pressure to produce metal and alloy powders.

According to the prior art disclosed in connection with the apparatus for manufacturing a spherical powder by the centrifugal atomization method, Korean Patent Registration No. 374363 (Mar. 29, 2003) discloses a method of melting a solder for soldering which is installed on the upper side of a chamber, A tundish for dropping a molten metal discharged from a molten metal portion provided at an upper center portion of the chamber, and a molten metal dropped from the tundish by a centrifugal force by means of a high-speed motor, And a collecting tank for collecting the powder formed by the atomizer; and a heat exchanger installed at a predetermined length below the chamber to sufficiently cool a large amount of powder and transfer it without heat accumulation A manufacturing apparatus for a solder paste by a centrifugal atomization method having a cooling pipe, A stirrer for rotating the rotating rod and a speed reducer for reducing the rotating speed of the rotating bar by a rotation rate of the stirring motor, The rotating disk formed by powdering the molten metal dropped by the centrifugal force by the high-speed motor has a "V" -shaped shape in the range of 110 to 130 ° from its surface, so that a metal powder having a uniform particle size can be produced A device for producing a powder for solder paste by a centrifugal atomization method is known.

However, in the case of the cooling system for producing the conventional powder described above, since both the gas spraying and the centrifugal atomization-based manufacturing apparatuses are only subjected to the primary cooling action, the cooling rate of the metal powder (≤10 ³ ° C) In the case of a manufacturing apparatus according to centrifugal atomization, the swirling flow center volume of the cooling gas is difficult to perform the swirling motion and the cooling speed is lowered. Therefore, the quality of the metal powder is not constant, there was.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method of cooling a metal powder by rapidly cooling the metal powder while uniformly cooling the metal powder, It is an object of the present invention to provide a multiple cooling system for producing spherical powders of metal and alloy spherical powder capable of producing spherical powders having better physical properties due to homogenization, increase in solubility, and fine structure of the tissues.

The multi-cooling system for producing metal and alloy spherical powders proposed by the present invention is a multi-cooling system for producing metal and alloy spherical powders, in which a raw material of a metal material or an alloying material is charged and melted with a heating induction coil to produce a molten metal, ; A centrifugal cooling unit disposed at a lower portion of the heating furnace in such a manner as to rotate in contact with the molten metal flowing out to the discharge port of the heating furnace and scattering the molten metal in a spherical powder form; A water curtain unit provided at a lower portion of the heating furnace to receive the centrifugal cooling unit and to supply water from the outside to form a water curtain to which spherical powder scattered from the centrifugal cooling unit can be contacted to thereby secondarily cool the spherical powder; Wherein the water curtain part comprises a cylindrical body which is in contact with and supported by the centrifugal cooling part so as to collide with the spherical powder scattered at the same time as the cooling water is cooled and water supplied to the upper part of the cylindrical body, A water nozzle which is provided at an inner peripheral upper end of the cylindrical body and forms a nozzle hole communicating with the water supply means so as to be capable of spraying water and which injects pressure by applying pressure so that water flows in the form of a curtain film .

The centrifugal cooling unit is composed of a rotating disk which is located inside the water curtain unit and in which the molten metal flowing out of the heating furnace rotates and comes in contact with the rotating disk,

The rotary disk is formed in a shape selected from a disk shape, a conical shape, and an arc shape having a gentle curved surface.

The material of the rotating disc is made of a metal material or ceramic.

It is also possible to form a coated surface coating layer by using a borazon material on the surface of the rotating disk.

In the centrifugal cooling unit, the rotating speed of the rotating disk is configured to be rotatable at 1,000 to 50,000 RPM.

The water in the water curtain portion forms a temperature of 0 to 100 ° C and is sprayed toward the cylindrical body at an injection pressure of 0 to 200 bar at the water nozzle.

In addition, the water curtain unit may include a plurality of water nozzles formed on the inner side of the cylindrical body so as to form multiple water curtains, and may be constructed of multiple water nozzles of a concentric circular structure.

In addition, the water curtain portion may have a multi-layered structure in which a plurality of multiple water nozzles are concentrically arranged in the vertical direction at mutually spaced intervals.

The water curtain portion of the present invention is provided with suction means provided at a lower end of the cylindrical body and sucking the water flowing in the cylindrical body, water circulation capable of circulating and supplying water sucked from the suction means to the water supply means And a water circulation unit composed of lines.

It is also possible to constitute a cooling means provided on the water circulation line and cooling the water circulation unit so as to lower the temperature of the water.

According to the multiple cooling system for producing the metal and alloy spherical powder according to the present invention, the centrifugal cooling unit for primarily cooling the liquid molten metal and the water curtain unit for generating water in the form of a curtain form secondary cooling are formed, It is possible to obtain a product having excellent physical properties due to homogenization of the spherical powder itself, increase in solubility, and fine structure of the spherical powder.

In addition, the multi-cooling system for manufacturing the spherical powder of the metal and alloy according to the present invention comprises a rotary disk rotating in contact with the melt in various shapes (disc shape, conical shape, arc shape) It is possible to manufacture spherical powders efficiently and suitably according to the working conditions.

Further, the multiple cooling system for manufacturing the spherical powder of the metal and alloy according to the present invention is formed by forming a rotating disk with a ceramics coated metal material or ceramic and forming a surface coating layer of a borazone material, It is possible to secure the durability of the disk itself and to prolong the life of the equipment.

In addition, since the multiple cooling system for producing the metal and alloy spherical powder according to the present invention is composed of multiple water nozzles having a concentric circular structure, multiple water curtains are formed, thereby maximizing the cooling effect of the spherical powder.

In addition, since the multiple cooling system for producing the spherical powder of metal and alloy according to the present invention constitutes the water circulation part capable of returning the used water in the water curtain part, it is possible to maintain the cooling effect while lowering the cost by reducing the water supply amount .

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a configuration diagram schematically showing an embodiment according to the present invention. Fig.
2 is a front view showing a first embodiment of a rotating disk according to the present invention;
3 is a front view showing a second embodiment of a rotating disk according to the present invention;
4 is a front view showing a third embodiment of a rotating disk according to the present invention;
5 is a cross-sectional view showing a first embodiment of a water curtain portion in an embodiment according to the present invention.
6 is a bottom view showing a second embodiment of the water curtain portion in the embodiment according to the present invention.
Fig. 7 is a schematic view showing a second embodiment of a water curtain portion according to the embodiment of the present invention; Fig.
8 is a schematic diagram showing another embodiment according to the present invention.

The present invention relates to a heating furnace having a heating furnace having a discharge port for charging a raw material of a metal material or an alloying material therein and dissolving the raw material into a heating induction coil to discharge the molten metal to the lower end thereof; A centrifugal cooling unit disposed at a lower portion of the heating furnace in such a manner as to rotate in contact with the molten metal flowing out to the discharge port of the heating furnace and scattering the molten metal in a spherical powder form; A water curtain unit provided at a lower portion of the heating furnace to receive the centrifugal cooling unit and to supply water from the outside to form a water curtain to which spherical powder scattered from the centrifugal cooling unit can be contacted to thereby secondarily cool the spherical powder; Wherein the water curtain part comprises a cylindrical body which is in contact with and supported by the centrifugal cooling part so as to collide with the spherical powder scattered at the same time as the cooling water is cooled and water supplied to the upper part of the cylindrical body, A water nozzle which is provided at an inner peripheral upper end of the cylindrical body and forms a nozzle hole communicating with the water supply means so as to be capable of spraying water and which injects pressure by applying pressure so that water flows in the form of a curtain film The multi-cooling system for the manufacture of spherical metal and alloy spheres containing the powder is characterized by its technical construction.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the illustrative embodiments set forth herein.

As shown in FIG. 1, a multi-cooling system for manufacturing a metal and alloy spherical powder according to the present invention includes a heating furnace 10, a centrifugal cooling unit 20, and a water curtain unit 30 .

The heating furnace 10 is constructed so that a raw material of a metal material or an alloying material is charged into the furnace 10 and melted in a heating induction coil 11 to produce a molten liquid.

At the lower end of the heating furnace (10), a discharge port (13) through which the molten metal can flow out is formed.

The centrifugal cooling unit 20 is positioned at a lower portion of the heating furnace 10 in correspondence with the discharge port 13 and functions to primarily cool the molten metal.

The centrifugal cooling unit 20 is rotated so as to rotate in contact with the molten metal flowing out to the discharge port 13 of the heating furnace 10 and is cooled so as to be dispersed in the form of solid spherical powder by contact with the molten liquid and centrifugal atomization.

As shown in Fig. 1, the centrifugal cooling unit 20 includes a rotating disk 21 which rotates and contacts the molten metal, and a driving means 23 for applying a rotational force to the rotating disk 21. As shown in Fig.

The rotary disk 21 is located on the inner side of the water curtain portion 30 and is located on the outflow path of the molten metal flowing out from the discharge port of the heating furnace 10 and rotates, Are directly contactable.

The rotating disk 21 is made of a metal material which is not deformed even when it comes into contact with the continuous spherical powder. For example, the rotary disk 21 can be formed using various metal materials such as copper, stainless steel, and plated steel.

The rotating disk 21 is formed using a metal material or a ceramic material but is formed by using a metal material or a ceramic material coated on the outside. That is, the rotary disk 21 is formed by coating a surface of a metallic material or a ceramic with a coating material of glass or refractory (for example, enamel, alumina, halide, etc.) to secure corrosion resistance and heat resistance.

It is also possible to construct a surface coating layer (not shown) coated on the surface of the rotating disk 21 by using a borazon material.

The surface coating layer may be formed entirely on the outer surface of the rotary disk 21 or may be partially formed only on the upper surface of the outer surface of the rotary disk 21 in contact with the spherical powder.

Generally, borazon is a boron nitride (BN) made by reacting nitrogen with boron, and is called cubic boron nitride because it has a cubic crystal structure like diamond. Also, the borazone has an advantage that it is not oxidized at a high temperature of 1,370 캜 and hardly wears because it does not react with iron.

When the rotary disk 21 is formed of the ceramic coated metal material and the surface coating layer of the borazone material is formed as described above, the spray efficiency of the spherical powder is improved and the durability of the rotary disk 21 is secured, It is possible to extend the service life.

The rotary disk 21 is formed in a disk shape, a conical shape, an arc shape having a gentle curved surface, or the like.

As shown in Fig. 2, the first embodiment of the rotary disk 21 is formed to have a circular plate shape having a flat upper surface. In other words, the rotary disk 21 has a vertically flat plane and is formed so as to have a cross section of "-" shape with a structure extending in the transverse direction with respect to an area where the spherical powder can be contacted.

As shown in FIG. 3, the second embodiment of the rotating disk 21 is formed to have a conical shape that forms an inclined surface inclined downward at four sides around the central portion. That is, the lower surface of the rotating disk 21 has a flat plane, a central portion of the upper surface protrudes upward pointedly, and an inclined surface in all directions with the center as a center, and has a triangular cross section.

As shown in Fig. 4, the third embodiment of the rotating disk 21 is formed to have an arc shape having a gentle curved surface.

Although the rotary disk 21 is shown as an arc shape formed concavely downward in the drawing, it is also possible to form the rotary disk 21 in an arc shape convex upward.

The driving unit 23 is connected to the rotating disk 21 to apply a rotational force to the rotating disk 21 so as to rotate. That is, the driving means 23 is connected to the axis of the rotating disk 21 and rotates to rotate the rotating disk 21.

The rotation speed of the rotary disk 21 in the centrifugal cooling unit 20 is configured to rotate at 1,000 to 50,000 RPM.

If the rotational speed of the rotating disk 21 is less than 1,000 RPM, the spraying efficiency of the spherical powder by the rotating disk 21 drops, and the spherical powder does not reach the water curtain 30, And when the rotational speed of the rotating disk 21 exceeds 50,000 RPM, the force of contact with the spherical powder contacting the rotating disk 21 is too strong, resulting in an imbalance in the shape of the spherical powder There is a problem.

As shown in FIGS. 1 and 5, the water curtain part 30 is formed by forming a water curtain to which a spherical powder scattered by the centrifugal cooling part 20 can be contacted. The water curtain part 30 includes a cylindrical body 31, , A water supply means (33), and a water nozzle (35).

The cylindrical body 31 is formed in a cylindrical shape extending in the vertical direction.

The cylindrical body 31 is hollowed to have an empty space in which a spherical powder can be scattered, and forms an inner wall contacting and supporting the spherical powder scattered from the centrifugal cooling unit 20.

The inner wall surface of the cylindrical body 31 may be formed as a flat vertical surface in the vertical direction and the inner wall surface of the cylindrical body 31 may be formed as an inclined surface inclined downward inwardly Do.

The water supply means 33 has a structure in which a water supply pipe 34 is connected to the upper portion of the cylindrical body 31 and water can be supplied to the cylindrical body 31 through the water supply pipe 34.

The water supply pipe 34 is connected to the water supply means 33 in correspondence with the cylindrical body 31 so that at least one water supply pipe 33 is provided. It is preferable that the water supply pipes 34 are arranged symmetrically on both sides of the cylindrical body 31 as shown in Fig. 5 so that water can be supplied from both sides.

The water supply means 33 may be a water tank or a water pipe for storing water to be supplied to the cylindrical body 31.

Although not shown in the drawing, the water supply means 33 constitutes a drive pump so that water of constant pressure can be supplied along the water supply pipe 34.

When the water supply means 33 is constituted by a water tank, it is preferable to install the water supply means 33 at a position higher than the cylindrical body 31 so that water can be smoothly moved to the cylindrical body 31 by gravity.

The water nozzle (35) is configured to inject water supplied from the water supply means (33) into the cylindrical body (31).

The water nozzle 35 is provided at an inner peripheral upper end of the cylindrical body 31 and forms a nozzle hole 36 capable of spraying water through the water supply means 33.

A nozzle hole (36) of the water nozzle (35) forms a water curtain by applying pressure to the interior of the cylindrical body (31) so that water flows in the form of a curtain film.

In the water curtain 30, water is supplied at a temperature of 0 to 100 캜. It is preferable to apply a temperature of 10 to 30 DEG C so as to optimize the cooling efficiency while preventing the shrinkage phenomenon.

The water curtain unit 30 is configured to inject water at an ejection pressure of 0 to 200 bar at the water nozzle 35 toward the cylindrical body 31.

When the injection pressure of the water curtain part 30 is less than 0 bar, the force of dropping the water is too weak to lower the cooling efficiency. When the injection pressure of the water curtain part 30 is more than 200 bar, There is a problem that the cooling force can not be achieved due to the strong force of falling.

6, the water curtain unit 30 includes a plurality of water nozzles 35 having concentric circles so as to form multiple water curtains in the cylindrical body 31 35 may be applied.

The multiple water nozzles 35 have a structure in which a plurality of water nozzles 35 are arranged inside the cylindrical body 31 with different diameters and spaced apart from each other.

As described above, when the water nozzle 35 of the water curtain part 30 is constituted by the multiple water nozzle 35 having the concentric circular structure, multiple water curtains can be formed to maximize the cooling effect of the spherical powder.

As shown in FIG. 7, the water curtain unit 30 may have a multi-layered structure in which a plurality of multiple water nozzles 35 are disposed concentrically with each other in the vertical direction.

For example, water nozzles 35 having the smallest diameter among the plurality of multiple water nozzles 35 are disposed on the uppermost side, and water nozzles 35 having a diameter gradually increasing toward the bottom side are sequentially arranged do.

And a chamber C for accommodating the spherical powder subjected to the second cooling treatment is provided below the water curtain portion 30. [

The operation of the present invention as described above will be described. First, the raw material is charged in the heating furnace 10, and the power is applied to the heating induction coil 11 to dissolve the molten metal to produce a liquid molten metal. Then, the molten metal in the heating furnace 10 flows out through the discharge port 13 while the molten metal contacts with the centrifugal cooling unit 20 to generate spherical powder as well as being primarily cooled. Here, in the case of the centrifugal cooling unit 20, power is applied to the driving means 23 before the molten metal is supplied from the heating furnace 10 to thereby create a driving state in which the rotating disk 21 is rotated so as to rotate, The molten metal of the heating furnace 10 is supplied so that the molten metal is contacted with the rotating disk 21 rotating at a high speed and scattered. At this time, in the case of the spherical powder, the water curtain unit 30 is cooled down secondarily while being in contact with the water curtain of the water curtain unit 30. The water curtain unit 30 supplies water from the water supply unit 33 through the water supply pipe 34 , The water supplied toward the cylindrical body 31 is sprayed by the water nozzle 35 so that water flows through the cylindrical body 31 to generate a water curtain in the cylindrical body 31. The water curtain formed on the cylindrical body 31 of the water curtain section 30 is secondarily cooled as the spherical powder scattered from the centrifugal cooling section 20 is contacted with the water curtain, and in the case of the spherical powder, I will add.

That is, according to the multi-cooling system for manufacturing the metal and alloy spherical powder according to the present invention, the centrifugal cooling unit for primarily cooling the liquid molten metal and the water curtain unit for generating water in the form of a curtain, It is possible to cool the spherical powder immediately after the first cooling and thereby to make the solidification speed of the spherical powder extremely fast and to improve the hardness of the spherical powder itself.

Another embodiment of the multiple cooling system for producing metal and alloy spherical powders according to the present invention is as shown in Fig. 8, comprising a suction means 41 for sucking in water and a water circulation line 43 for returning water And a water circulating part 40 constituted by the water circulation part.

The suction means (41) is provided at the lower end of the cylindrical body (31) and is configured to suck the flowing water in the cylindrical body (31). That is, the suction unit 41 generates a suction force to circulate the water used for cooling the spherical powder to the water supply unit 33 of the water curtain unit 30 so as to be reused.

The suction means 41 generates a suction force by generating a vacuum therein.

Since the vacuum generating structure of the suction means 41 can be constructed by applying the same structure as a general vacuum cleaner or a vacuum generator, detailed description thereof will be omitted.

The water circulation line 43 of the water circulation unit 40 is connected to the water supply means 33 or the water supply pipe 34 from the lower end of the cylindrical body 31 so as to communicate therewith, Path.

The water circulation unit 40 may be provided with a cooling unit 45 provided on the water circulation line 43 and cooling the water to lower the temperature of the water. In other words, the cooling means 45 is configured to cool water along the water circulation line 43 to cool the water, which is supplied to the water supply means 33 but is raised due to contact with the spherical powder.

In the above, the cooling means (45) can be structured such that the water can be cooled by cooling the water or by applying a refrigerant pipe to the structure of the blower.

When the cooling means 45 is constructed as described above, it is possible to cool the original water temperature to compensate for the increased temperature of the used water.

That is, when the water curtain unit 30 according to the present invention is constructed as in the above-described other embodiments, it is possible to reduce the amount of water supplied, so that the cooling effect can be maintained while reducing the cost.

In the other embodiments described above, the same configuration as that of the above-described embodiment can be employed, so that detailed description is omitted.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the drawings disclosed in the present invention are not intended to limit the scope of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as falling within the scope of the present invention.

10: heating furnace 11: heating induction coil
13: Discharge port 20: Centrifugal cooling section
21: rotating disk 23: driving means
30: water curtain part 31: cylindrical body
33: Water supply means 34: Water supply pipe
35: Water nozzle 36: Nozzle ball
40: water circulation part 41: suction means
43: water circulation line 45: cooling means

Claims (11)

A heating furnace having a discharge port for charging a raw material of a metal material or an alloying material into the inside thereof, dissolving the raw material in a heating induction coil to produce a molten metal, and discharging the molten metal to the lower end;
A centrifugal cooling unit disposed at a lower portion of the heating furnace in such a manner as to rotate in contact with the molten metal flowing out to the discharge port of the heating furnace and scattering the molten metal in a spherical powder form;
A water curtain unit provided at a lower portion of the heating furnace to receive the centrifugal cooling unit and to supply water from the outside to form a water curtain to which spherical powder scattered from the centrifugal cooling unit can be contacted to thereby secondarily cool the spherical powder; Including,
Wherein the water curtain portion comprises a cylindrical body which is in contact with and supported by the centrifugal cooling unit so that spherical powder scattered at the same time is collided with the centrifugal cooling unit, water supply means connected to the upper portion of the cylindrical body and capable of supplying water from the outside, And a water nozzle which is provided at an upper end of the inner periphery of the sieve and communicates with the water supplying means to form a nozzle hole capable of spraying water, the water nozzle injecting pressure by applying pressure so that water flows in the form of a curtain film In addition,
Wherein the water curtain portion is provided with a suction means provided at a lower end of the cylindrical body for sucking the water flowing in the cylindrical body and a water circulation line capable of circulating and supplying the water sucked from the suction means to the water supply means A water circulation part,
Wherein the water circulation unit comprises cooling means provided on the water circulation line and cooling the water to lower the temperature of the water.
The method according to claim 1,
Wherein the centrifugal cooling unit includes a rotating disk which is located inside the water curtain unit and in which the molten metal flowing out of the heating furnace rotates and contacts with the rotating disk and a driving means for applying a rotational force to the rotating disk, Multiple cooling systems for manufacturing.
The method of claim 2,
Wherein the rotating disk is formed in a shape selected from a disk shape, a conical shape, and an arc shape having a gentle curved surface.
The method of claim 2,
Wherein the material of the rotating disc is made of ceramic coated metal or ceramic.
The method of claim 2,
And a surface coating layer coated on the surface of the rotating disk using a borazon material.
The method of claim 2,
Wherein the rotating speed of the rotating disk in the centrifugal cooling unit is rotated at 1,000 to 50,000 RPM.
The method according to claim 1,
Wherein the water in the water curtain part forms a temperature of 0 to 100 캜 and injects the water at an injection pressure of 0 to 200 bar at the water nozzle toward the cylindrical body.
The method according to claim 1,
Wherein the water curtain part is constituted by multiple water nozzles of a concentric circular structure having a plurality of water nozzles formed on the inside of the cylindrical body at intervals from each other so as to form multiple water curtains, Multiple cooling systems for manufacturing.
The method of claim 8,
Wherein the water curtain portion has a multi-layer structure in which a plurality of multiple water nozzles on a concentric circle are arranged at mutually spaced intervals in the vertical direction.
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