KR101768950B1

KR101768950B1 - Manufacturing apparatus for globular shape metal powder using rotating cylinder with hole

Info

Publication number: KR101768950B1
Application number: KR1020150152067A
Authority: KR
Inventors: 김일규
Original assignee: 주식회사 나노코리아
Priority date: 2015-10-30
Filing date: 2015-10-30
Publication date: 2017-08-18
Also published as: KR20170051698A

Abstract

The present invention relates to an apparatus for manufacturing spherical metal powder using another idle rotating cylinder, and more particularly to a rotating spherical rotating machine in which a metal melt is dropped in a rotating cylinder by using a rotary cylinder in which a plurality of perforations are perforated on the outer circumferential surface, A hollow cylindrical metal powder can be easily and easily manufactured by adjusting the rotation speed of the rotary cylinder or the size of the perforated hole so that the metal powder can be discharged in the form of a spherical metal powder. And a sintered metal powder production apparatus.

Description

TECHNICAL FIELD [0001] The present invention relates to a spherical metal powder production apparatus using a hollow cylindrical cylinder,

The present invention relates to an apparatus for manufacturing a spherical metal powder by which a melt falling freely in the interior of a rotating cylinder through which a plurality of perforations are perforated can be made into a spherical metal powder.

In general, metal powders are made of fine powder of metal, and are used for paints, printing inks, catalysts for chemical industry, raw materials for flame, and metal reducing agents. The metal powder can be manufactured into a spherical shape, an irregular shape, a resin shape, a flake shape, or the like depending on the manufacturing method.

Examples of the method of manufacturing the metal powder include a method of shaving a thin metal plate, an atomizing method of melting a metal and spraying a high-pressure fluid to harden a mist shape, a ball mill, And how to make changes.

Among them, there is known a device including a tundish for containing molten molten metal and a spray unit for spraying a fluid such as a high-pressure gas or water into a molten metal flowing out from the tundish by means of a metal powder production apparatus using atomizing.

Among them, in the case of producing metal powder by using gas injection, there is a disadvantage that the production cost is increased due to a large amount of gas used. However, the equipment for reusing gas may be equipped, but the cost of equipment for reusing gas is high There has been a problem that difficulty arises due to facility investment costs.

In addition, there is also a problem that it is not easy to easily adjust the size of the metal powder so produced to a desired size.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for manufacturing a spherical metal powder by using a rotating cylinder having a perforated hole, The present invention also provides a sintered metal powder production apparatus using the other idle rotating cylinder to manufacture sophisticated sintered metal powder for a metal having poor metal flowability.

Other objects and advantages of the present invention will be described hereinafter and will be understood by the embodiments of the present invention. Further, the objects and advantages of the present invention can be realized by the means and the combination shown in the claims.

In order to solve the above-described problems, the present invention provides a method for manufacturing a sintered metal powder, comprising: a molten metal (10); A plurality of perforations 40 are formed in the outer periphery of the molten metal 10 so as to be rotated at a predetermined rotational speed so that the melted material falling freely into the inside is shaped into a spherical metal powder A rotary cylinder 30 for discharging the air to the outside through the perforation 40; And an enclosure 20 for forming an internal space in which the rotary cylinder 30 is installed so that a predetermined gas is filled therein and cooling the spherical metal powder discharged from the rotary cylinder 30 simultaneously with discharge And the size of the spherical metal powder can be adjusted according to the circular size of the perforation (40).

As described above, according to the present invention, it is easy to manufacture metal powders of different sizes by controlling the diameter of the pores by using the rotary cylinder formed with pores.

In addition, the present invention has the effect of easily controlling and controlling the size of the metal powder by adjusting the rotation speed of the rotating cylinder (selectively adjusting the predetermined speed).

In addition, the present invention is advantageous in manufacturing spherical powder for a metal having relatively low fluidity of the metal melt as compared with other metals by rotating the metal melt in the housing having the inner space and discharging through the perforated plate to produce spherical metal powder It is effective.

Further, in the present invention, it is necessary to use a high-pressure gas pressure device as an essential factor, and thus the facility facility is very expensive, but the gas pressure does not need to be relatively higher than the existing one, .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of an embodiment of an apparatus for manufacturing spherical metal powder using another idle cylinder according to the present invention; FIG.

Before describing in detail several embodiments of the invention, it will be appreciated that the application is not limited to the details of construction and arrangement of components set forth in the following detailed description or illustrated in the drawings. The invention may be embodied and carried out in other embodiments and carried out in various ways. It should also be noted that the device or element orientation (e.g., "front,""back,""up,""down,""top,""bottom, Expressions and predicates used herein for terms such as "left,"" right, "" lateral, " and the like are used merely to simplify the description of the present invention, Or that the element has to have a particular orientation. Also, terms such as " first "and" second "are used herein for the purpose of the description and the appended claims, and are not intended to indicate or imply their relative importance or purpose.

The present invention has the following features in order to achieve the above object.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

To this end, one embodiment of the present invention includes: a molten metal (10) storing molten metal as a target of sphering metal powder; A plurality of perforations 40 are formed in the outer periphery of the molten metal 10 so as to be rotated at a predetermined rotational speed so that the melted material falling freely into the inside is shaped into a spherical metal powder A rotary cylinder 30 for discharging the air to the outside through the perforation 40; And an enclosure 20 for forming an internal space in which the rotary cylinder 30 is installed so that a predetermined gas is filled therein and cooling the spherical metal powder discharged from the rotary cylinder 30 simultaneously with discharge And the size of the spherical metal powder can be adjusted according to the circular size of the perforation (40).

The rotary cylinder 30 is configured such that the plurality of perforations 40 are not formed at a predetermined minimum height of the rotary cylinder 30 so that the melt is filled in the rotary cylinder 30 to a predetermined height, So that the melt of the rotating cylinder (30) heated and dropped does not stick to the rotating cylinder (30).

Further, the predetermined height is controlled according to the temperature of the melt.

Hereinafter, an apparatus for manufacturing spherical metal powder using another idle cylinder according to a preferred embodiment of the present invention will be described in detail with reference to FIG.

The sintered metal powder production apparatus using another idle rotating cylinder according to the present invention includes a molten metal (10), a rotating cylinder (30), and a housing (20).

The molten metal (10) is a place in which the molten material to be the target of the metal powder is stored, and an outlet through which the stored molten material falls down is formed at the upper and lower end portions which can be opened and closed. Of course, such an outlet portion can also be opened or closed, or the opening and closing amount can be adjusted.

The housing 20 has a relatively large size as compared with the molten metal 10 at the lower end of the molten metal 10 described above and is hollowed to form an inner space and a portion of the molten metal 10 And a separate gas inlet 60 is formed in the outer periphery of the gas outlet 60 so that a separate cooling gas is injected into the inside of the housing 20 And is filled with a certain level of gas so that the melt discharged to the outside through the perforations 40 of the rotary cylinder 30 to be described later can be cooled in the form of spherical metal powder.

The spherical metal powder discharged to the housing 20 is discharged to the outside through the discharge port 70 at the lower end. As the gas injected into the housing 20, nitrogen, argon, helium, or the like, which is an inert gas, is used.

The rotating cylinder 30 is provided inside the housing 20 as described above and has an upper end opened and an upper end opened perpendicularly to the upper opening of the housing 20 and the outlet of the molten metal 10 So that the molten metal which is freely dropped and supplied from the molten metal 10 can be supplied into the rotary cylinder 30. In this case,

Since the rotating cylinder 30 has an inner space with an inner space of a predetermined size, it is easy to manufacture a spherical powder for various metals having relatively low fluidity of the metal melt as compared with other metals.

The rotating cylinder 30 is rotated at a predetermined rotational speed in a form in which a plurality of perforations 40 are perforated on the outer periphery of the rotary cylinder 30 so that the molten material supplied to the inside of the rotary cylinder 30 is adjusted in accordance with the size of the circular perforation 40 And is discharged to the housing 20 in the form of spherical metal powder.

Of course, by varying the rotational speed of the rotary cylinder 30 or the size of the perforated bore 40, it is easy to manufacture spherical metal powders of various sizes desired by the user.

In the case of the perforations 40 perforated in the rotary cylinder 30, the perforation 40 is not punctured from the lowermost end of the rotary cylinder 30 to a predetermined height, The molten material falling on the rotary cylinder 30 may come into contact with the bottom surface of the rotary cylinder 30 to be cooled immediately and stick to the floor surface. At this time, the perforation 40 is not formed up to a predetermined height at the lowermost end of the rotary cylinder 30 so that the initial melt is filled up to a predetermined height of the rotary cylinder 30, and the rotary cylinder 30 is heated by the melted material State, the above-described problem does not occur.

Of course, the predetermined height at which the perforation 40 is not punctured at the lowermost portion of the rotary cylinder 30 will be adjustable according to the temperature (ex: usually 1600 ° C) of the melt supplied to the rotary cylinder 30 by free fall.

A rotary means 50 such as a rotary motor is connected to the rotary cylinder 30 so as to transmit rotational power to the lower end of the rotary cylinder 30 in the housing 20, (E.g., a bearing or the like) that does not interfere with rotation of the rotary cylinder 30 when the rotary cylinder 30 is in contact with (or is rotated in contact with) a part of the outer circumference of the rotary cylinder 30 It can be installed in form and structure.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

10: molten metal
20: enclosure
30: rotating cylinder
40: Perforation
50: rotating means
60: gas inlet
70: Outlet

Claims

A metal melt (10) storing a molten metal as a target of sphering metal powder;
A plurality of perforations 40 are formed in the outer periphery of the molten metal 10 so as to be rotated at a predetermined rotational speed so that the melted material falling freely into the inside is shaped into a spherical metal powder A rotary cylinder 30 for discharging the air to the outside through the perforation 40;
A separate gas inlet 60 is formed in the outer periphery of the rotary cylinder 30 so as to fill the interior of the housing 20 with a predetermined level of cooling gas, (20) for cooling the spherical metal powder discharged from the discharge port (30) simultaneously with discharge,
According to the circular size of the perforation (40), the size of the spherical metal powder can be adjusted,
The rotary cylinder 30 is provided with a plurality of perforations 40 so as to prevent the perforations from being formed at the lowest end of the rotary cylinder 30 so that the melt is filled up to a predetermined height in the rotary cylinder 30, The rotary cylinder 30 is heated so that the melt of the rotary cylinder 30 heated by the melt does not stick to the rotary cylinder 30,
The predetermined height is adjusted according to the temperature of the melt,
Wherein the gas injected into the housing (20) is one of inert gas, nitrogen, argon, and helium.

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