KR101390857B1 - surface coating method and surface coating machine of slag ball - Google Patents

Abstract

The present invention relates to a coating apparatus and a coating method for the surface of metal slug particles, and more particularly, to a coating apparatus for coating metal slug particles on a surface of each slug particle, It is about the technology that can increase the utilization value of particles as finishing materials such as interior decorations.

Description

Technical Field [0001] The present invention relates to a surface coating method and a surface coating machine of a slag ball,

In order to recycle iron slug particles generated in the smelting process by building, civil engineering materials, road marking means, etc., the surface of each slug particle is painted in various colors to increase the utilization value, And at the same time, a phenomenon such as entanglement between slug particles can be prevented.

Generally, during the smelting process in a steel mill, a by-product layer containing a metal is formed in the upper part of the furnace. These by-products are separately collected and then processed into a small granular form by landfill or wind.

The slag particles generated in the form of particles are sometimes recycled as civil engineering building materials or road paving materials,

Since the slug has a black color of its own, it needs to be painted in various colors depending on each applied technical field.

As a coating method of the slug particle surface, a method in which a liquid coating material is applied to each slug and then coagulated can be applied. However, since a lot of micropores are formed on the surface of the slug particles, when the liquid coating material is applied, The paint on the corresponding point is swollen and bubbles are formed, thereby causing a lot of coating defects.

In addition, when each particle is dried after each surface coating, there is no phenomenon that each slug particles are entangled with each other during the drying process. Currently, there is proposed a method of drying each slug particle in a separated state not.

Due to the difficulty of surface coating, the surface of the slug particles is not coated at present and the technical field which is finally applied is limited.

Korean Patent Publication No. 10-0693391

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve such conventional problems,

Basically, it is possible to coat the surface of each slug particle with high quality and to prevent the phenomenon that each slug particle is tangled with each other in the coating process, so that the metal slug particle which can increase the utilization value of the slug particle as a finish material A surface coating apparatus and a coating method.

An embodiment of the coating apparatus of the present invention having the above-

A heating device having a heating space formed therein and having an outlet connected to the heating space at one side thereof, a heating device formed in the heating device and capable of heating the heating space, The metal slug particles are arranged in the heating space, and the metal slug particles are arranged on the upper surface in such a manner that a plurality of through holes are vertically passed through the metal slug particles. A cooling air supply unit for supplying cooling air to the metal slug particles, a cooling air supply unit for supplying cooling air to the metal slug particles, Wherein the metal mesh is located in the vicinity of the outlet, And a first spray nozzle for spraying the cooling air from the lower side of the painting net to the upper side in the process of passing the particles through the discharge port, wherein the cooling air injected through the first spray nozzle The metal slug particles are floated into the outside atmosphere of the heating furnace, and at the same time, the powder coating material on the surface is dried.

The conveying unit includes a driving force generating unit and a conveying roller connected to the driving force generating unit and rotatable in a state of being located in the heating space. The coating net is in the form of a plate, and when the conveying roller is connected to the conveying roller, Lt; / RTI >

Or the conveying portion includes a first driving roller positioned in the heating space and a second driving roller located in the periphery of the discharging port, wherein the painting network is in the form of a belt in the form of an endless track, and both ends are connected to the first and second driving rollers And can be wound and rotated in an endless track form.

And a second spray nozzle located outside the heating furnace and spraying cooling air from the outside of the discharge port, wherein the air sprayed from the first spray nozzle during the passage of the metal slug particles through the discharge port Wherein the powder paint is secondarily lifted by the cooling air injected through the second injection nozzle while being primarily floated by the second injection nozzle, and at the same time, the powder coating material on the surface is further dried.

Further, at one side of the heating furnace, an entrance port through which the paint net can enter the heating space from the outside is formed, and an opening / closing door formed at the inlet port and the outlet port to open / close the inlet port and the outlet port have.

An embodiment of the coating method with such a constitution,

A method of manufacturing a metallic slug, comprising the steps of: placing a metal slug particle on a top surface of a painted net in the form of a net, and placing the metallic slug particle on the surface of the net; A step of spraying powder onto the surface of the metal slug particle, a step of placing the paint net in a horizontal direction in the heating space inside the heating furnace, a step of heating the heating space by the heating device to melt the powder coating on the surface of the metal slug particle A step of discharging the metal slug particles, which are deposited on the coating network, through the discharge port, in which the coating network is moved by the transferring unit, and a step of discharging cooling air to the lower side of the coating net So that the slug particles are discharged to the outside of the heating furnace Stimulus as soon at the same time and a drying step in which the paint is a powder coating of the surface drying.

Further, in the step of drying the paint, cooling air is injected through the second injection nozzle to float the metal slug particles floating in the air, and further drying and drying the surface paint is further performed .

The present invention having these various embodiments,

Basically, since each slug particle is metallic, the paint is uniformly applied over the entire surface of the slug particle as compared with the existing liquid paint through the powder coating.

As the metal slug particles are sprayed with cooling air in the process of passing through the discharge port in the process of moving the coating net after the powder coating, the metal slug particles are lifted into the outside atmosphere by heating, and the powder coating material on the surface is dried,

Since the slug particles are spread in the air during the floatation process, the slug particles can be separated and dried without being tangled by the paint during the drying process of the paint.

As a result, since the surface coating can be performed for each metal slug particle, it is advantageous that the metal slug particles of various colors can be utilized as a finishing material or a decorative material for construction.

In addition, as the cooling air is injected again through the auxiliary spray nozzle in the state where each slug particle is floated for the first time, the drying efficiency is further increased and at the same time, the slug particles are discharged to the collection point by the wind power, .

1 is an exploded perspective view
2 is a perspective view showing a structure of a heating furnace and a flue-
Fig. 3 is a perspective view showing a state in which the paint net is installed in the heating furnace.
Fig. 4 is an overall cross-sectional view
5 is a cross-sectional view showing a state in which metal slug particles are seated in a paint network
6 is a side cross-sectional view showing a process of powder coating after the metal slug particles are settled in the paint network
7 is a cross-sectional view showing a state in which the heating space is heated in a state in which the painting net is installed in the heating furnace through the entrance
8 is a cross-sectional view showing a process in which the paint net is drawn out through the discharge port by the transfer part during the melting of the powder coating material
Fig. 9 is a perspective view of Fig. 8
FIG. 10 is a cross-sectional view of a state in which metal particles are lifted into the atmosphere as cooling air is sprayed through the first injection nozzle in the process of drawing out the coating network and the metal slug particles to the outside
11 is a cross-sectional view of the state in which cooling air is sprayed from the second injection nozzle in the state that the metal slug particles are floated to the atmosphere
12 is a process flow chart showing the coating process of the metal slug particle surface
13 is a cross-sectional view showing a modified example of the paint network and the transfer part

Hereinafter, specific configurations and effects of the present invention will be described based on the embodiments shown in the drawings.

The coating apparatus for the surface of the metal slug particle of the present invention includes a heating unit 100, a flock drying unit 210, a coating net 500 and a powder coating unit 600 as shown in FIGS. 1 to 4, .

First, the heating unit 100 is a part where the powder coating material applied on the surface of the metal slug particles 1 (hereinafter referred to as "slug particles 1") is melted during the powder coating process, Device 120 as shown in FIG.

The heating furnace 110 has a function of providing a space necessary for heating. The heating furnace 110 has a box shape in which four sides are closed, a heating space 112 is formed therein, and a front wall has a discharge port And an inlet 117 serving as a passage through which the paint net 500 enters the heating space 112 from the outside is formed on the rear wall surface.

A separate opening and closing door 118 is provided in the discharge port 114 and the entrance port 117 to selectively open and close the discharge port 114 and the entrance port 117 so that the discharge port and the entrance port In the heating process of the slug particles, the discharge port and the inlet port are closed to allow the heating space to be sealed.

At this time, each opening / closing door 118 is hinged around the outlet port and the entrance port as shown in the drawing, so that the opening / closing door 118 is opened and closed while being rotated around the hinge axis. Of course, And the like.

The upper part of the heating furnace can be opened and closed without forming an entrance, and the upper part of the heating furnace can be opened in the process of inserting the painting net into the heating furnace described later, and then the painting net can be transformed.

 An installation duct 150 for installing a conveyance roller 720 to be described later is formed on both inner wall surfaces of the heating furnace 110. The installation duct 150 has the same length as the section from the rear end portion to the front end portion of the heating furnace Lt; / RTI >

A space 152 is formed in the installation duct 150 in the form of a closed tunnel and a heating space. The space between the space 150 of the installation duct 150 and the space A slit-shaped guide hole 154 communicating with the space is formed.

At this time, the guide hole 154 is formed over the entire length of the installation duct 150 and the front and rear ends thereof are formed in a state of communicating with the discharge port 114 and the entrance 117 of the heating furnace 100.

Although not shown in the drawing, a heat insulating layer or the like for heat insulation from the outside may be formed on the wall surface of the heating furnace, and the size and shape of the heating furnace 110 are not limited to the drawings.

The heating device 120 constituting the heating part 100 together with the heating furnace 110 functions to raise the heating space 112 to the melting temperature of the powder coating material in a state in which the powder coating material is coated on the surface of the slag particles , An electric heating method, or a burner type.

In the case of the electric heating method, the electric heater can be installed in the wall of the heating furnace or in the heating space, or in the case of the burner type, the raw material such as LPG gas is burned to supply the combustion heat to the heating space.

The heating device 120 is not limited to the electric heating or the combustion type, and can be applied to various types of modifications as long as the heating space can be heated to an appropriate level.

In the heating unit 100, a flock drying unit 200 is installed.

The flotation drying unit 200 serves to float each slug particle 1 in the air using compressed air to instantaneously cool and dry the powder coating material on the surface. The cooling air supply unit 210 and the first injection nozzle 220 and a second injection nozzle 230.

The cooling air supply unit 210 uses a structure, such as a compressor, capable of compressing air to generate high-pressure compressed air.

The cooling air supply unit 210 may be installed in the heating furnace 1110 or may be located in a separate external space.

The cooling air supply unit 210 is connected to the first connection pipe 212 and the first injection nozzle 220. The first connection pipe 212 connects the air generated from the cooling air supply unit 210 to the heating furnace 110, To the periphery of the discharge port 114,

One end is connected to the cooling air supply unit 210 and is disposed at a lower point of the outlet 114. [

A plurality of first injection nozzles 220 for external injection of cooling air are arranged on the upper surface of the first connection pipe 212 along the longitudinal direction of the discharge port 114.

At this time, the first injection nozzle 220 is formed such that the injection port is directed upward, and is formed in a diagonal direction toward the outside by heating, so that cooling air can be injected in an oblique direction from the bottom of the discharge port toward the outside.

According to this structure, the high-pressure cooling air generated from the cooling air supply unit 210 is moved along the first connection pipe 212 to the entire forming section of the discharge port 114, and then discharged through the first spray nozzle 220, In the oblique direction from the lower side of the discharge tube 114 toward the upper side.

Although the first connection pipe 212 is shown in the form of a pipe, it can be realized by a duct structure or the like, and unlike the drawing, the injection nozzle is deformed into a long elongated shape along the longitudinal direction of the first connection pipe 212 .

In addition, the first connection pipe 212 is not formed separately, and an air flow path is formed in the heating path and a first injection nozzle connected to the air flow path is formed in the lower part of the discharge port 114, So that the cooling air is moved along the air passage and then discharged from the lower portion of the outlet.

The second connection pipe 214 and the second injection nozzle 230 are further formed in the flock drying part 200 formed up to the first injection nozzle 220.

The second connecting pipe 214 and the second spray nozzle 230 additionally spray cooling air separately from the first spray nozzle 220 to increase the paint drying efficiency on the surface of the slag particle 1, To the collection point.

The second connecting pipe 214 is positioned below the forming point of the outlet 114 of the heating furnace and is positioned below the first connecting pipe in a state where the end is connected to the cooling air supplying unit 210.

The second injection nozzle 230 is formed on the upper surface of the second connection pipe 214 so that the cooling air can be injected from below to the upper side. And facing diagonally.

That is, the injection point of the second injection nozzle 230 is located below the injection point of the first injection nozzle.

Accordingly, the slug particles 1 are additionally supplied with cooling air jetted from the second injection nozzle 230 while the slug particles 1 are floated on the basis of the cooling air injected from the first injection nozzle.

The second connection pipe 214 may be connected to the cooling air supply unit 210 together with the first connection pipe or may be connected to a separate auxiliary cooling air supply unit 210, The cooling air injection timing may be made slightly later than the injection timing of the first injection nozzle or may be made at the same time.

Since the second connecting pipe 214 and the second spray nozzle 230 are means for further increasing the paint drying efficiency of the surface of the slug particles, if only the cooling air sprayed from the first spray nozzle 220 is sprayed The second connection pipe 214 and the second injection nozzle 230 may be omitted.

The heating furnace 110 is provided with a temperature sensing sensor 300 for measuring the heating temperature of the heating space 112 and controlling the operating time and time of the lifting and drying unit 200,

The temperature sensing sensor 300 functions to check whether the heating space 112 is raised to a temperature suitable for melting in the process of melting the powder coating material on the surface of the slag particles and to provide an operation signal of the cooling air supply unit 210 .

Accordingly, the temperature sensor 300 is connected to the cooling air supply unit 210 to control the injection timing of the cooling air.

In this state, the transfer unit 700 is installed in the heating furnace 110.

The transfer unit 700 performs the transfer function of the paint network 500 in the process of inserting the painting net 500 to be described later into the heating furnace 110 or discharging the painting net 500 to the outside of the heating furnace 110, And a conveying roller 720.

Among them, the driving force generating member 710 functions to generate a driving force necessary for transferring the painting net 500, and a general driving motor is used.

The conveying roller 720 conveys the driving force of the driving force generating member 710 to the paint net 500 and serves as a conveying path of the paint netting. And are arranged in a plurality of intervals along the longitudinal direction of the both installation ducts 150.

The conveying rollers 172 arranged in this manner are arranged in a vertically symmetrical state in the installation duct and the upper and lower conveying rollers are rotated in mutually opposite directions so that a paint web described later can pass between the upper and lower conveying rollers 720 do.

These conveying rollers may be connected to the power generating member or may be directly connected to each other by using a power transmitting member (not shown) such as a chain or a belt and rotated by the driving force of the driving force generating member.

As the conveying rollers 720 are installed in the installation duct 150, the conveying rollers are located in a space independent of the heating space, so that damage to the conveying roller can be minimized in the process of heating the heating space.

Of course, when there is no risk of damage due to heating due to the material of the conveying roller, the conveying roller may be installed in a state in which the conveying roller is completely exposed to the heating space without forming the installation duct.

In this way, the painting furnace 500 is further installed in the heating furnace 110 provided up to the transfer part 700.

The coated net 500 serves as a cradle for the metal slug particles during the powder coating process of the metal slug particles and the drying process of the coating material. The coated net 500 further includes the perforated plate 510 and the connection frame 520 (see FIG. 7) ).

Among them, the perforated plate 510 functions as a stowage slurry particle and a function of passing compressed air supplied from the flock drying unit 210. The perforated plate 510 is shaped like a plate having an area equal to or smaller than the heating space 112 as a whole, And the through holes 512 serving as passages of air are formed to penetrate to the lower surface.

In other words, as shown in the drawing, the mesh network has a mesh network as a whole.

At this time, the perforated plate 510 is entirely made of a conductive material, and current can be supplied during the powder coating process.

The connection frame 520 is a part where electrical connection is made with the powder coating part to be described later in the powder coating process and is also a part that is seated on the rotating roller 720 in the process of being transported by the transporting part described later .

The connecting frame 520 is installed in a flat plate-like shape so as to protrude outward along the periphery of the perforated plate 510.

The painting net 500 is positioned horizontally with the bottom surface of the heating space 112,

At this time, the painting net 500 is positioned between the vertically opposed conveying rollers 720 in a state in which the connecting frame 520 of both side edges is fitted in the guide hole 154 of the installation duct 500.

In this state, the paint nets 500 can be moved back and forth by the rotation of the respective conveying rollers.

As the coating network 500 is installed, the heating space 112 has a vertically divided structure with respect to the coating network 500.

The slag particles 1 are deposited in the paint network 500. The slug particles 1 are by-products generated in the smelting process as described above, and have a particle form containing about 20% or more of iron itself.

The slug particles 1 are uniformly dispersed over the entire upper surface of the perforated plate 510 of the paint net 500 as shown in FIGS. 5 and 6. At this time, the through holes 512 of the perforated plate 510 Are formed to be smaller than the diameter of the slug particles 1 so that the slug particles 1 do not fall downward through the through holes 512.

In the state where the slug particles 1 are seated, a separate powder coating unit 600 is connected to the paint net 500.

The powder coating (600) A powder spraying nozzle 620 and a current supply part 630. The powder coating part 610 is formed by coating a surface of each slug particle 1 with a powder coating material.

The coating material supply unit 610 receives the powder coating material used for powder coating and supplies the powder coating material at a predetermined pressure, and is located outside the heating furnace 110. The powder coating material used in this case is an epoxy or polyethylene powder .

The paint spray nozzle 620 serves to spray the powder paint in the paint supply part 610 to the outside and is formed in the form of a general spray gun.

The electric current supplying unit 630 forms a current in each slug particle 1 and powder coating material during powder coating so that the powder coating material reaches the surface of the slug particle by the electrode coater so that a high voltage is formed in the paint spraying nozzle 620 And is electrically connected to the perforated plate 510 in a connected grounded form.

Therefore, the slug particles 1 placed on the perforated plate 510 are electrically grounded through the perforated plate 510 as a conductive layer.

Since such a powder coating portion uses a known construction, further description of construction will be omitted.

Hereinafter, a powder coating method of the particle surface by such a constitution will be described.

The powder coating method according to the present invention first carries out the metal slug particle deposition step S100 as shown in FIGS. 12 and 5, which separates the entire paint net 500 from the heating furnace 110 So that the slug particles 1 are uniformly distributed on the upper surface of the perforated plate 510.

At this time, each slug particle is seated in a state in which the slug particles are not laminated with each other, so that the paint can be evenly applied to the surface of each slug particle (1).

Thereafter, a powder coating step S200 is performed. In this step, the powder coating material is sprayed onto the surface of each slug particle 1 by using the powder coating unit 600, As the high voltage is applied to the perforated plate 510, the respective slug particles 1 in contact with the perforated plate 510 are electrically grounded.

In this state, the powder coating powder is sprayed at a constant pressure through the paint spraying nozzle 620. At this time, since the high voltage is applied to the paint spraying nozzle 620 as described above, And is sprayed onto the surface of the slug particles (1).

In this state, as the static electricity is generated between the surface of each metal slug grounded through the perforated plate 510 and the powder coating material having a charge, the powder particles of the powder coating are maintained on the surface of each slug particle.

The powder coating step may simultaneously spray the powder coating material on the upper and lower sides of the perforated plate 510. The powder coating material sprayed from the lower side of the perforated plate 510 passes through the through holes of the perforated plate 510, ) Surface.

In this state, a paint net installation step (S300) is performed in which the entire paint net 500 is installed in the heating space of the heating furnace. This is done by inserting the paint net 500 into the heating port (117 And then inserted into the heating space 112. [0054]

At this time, the frame edges of both sides of the painting net are sandwiched between the conveying rollers 720 arranged vertically in a state of being fitted in the guide holes 154 of the installation duct 150.

In this state, as the transporting roller 720 is rotated by the driving force generating member 710, the entire coated network moves in a sliding manner forward, and is completely housed in the heating space 112.

Therefore, the heating space 112 is divided into upper and lower portions with respect to the paint net 500.

Since the electric current is supplied to the coating network even in the process of installing the coating network 500 in the heating furnace, powder coatings arriving at the surface of each slug particle are maintained in the state of arrival at the slug particle.

Thereafter, the coating material melting step S400 is performed. This is a process of melting the powder coating material that has arrived at the surface of the slag particles to be fused to the surface of the slug particles. To this end, the heating space is closed by the heating unit 100 And the heating space 112 is heated.

At this time, since the powder coating material generally melts at about 180 ° C to 200 ° C, the heating temperature of the heating space 112 is set accordingly.

When the heating temperature of the heating space 112 is heated to the melting temperature, the powders of the powder coatings arriving at the surfaces of the slug particles are melted and formed on the surface of each metal slug particle.

Thereafter, a paint network discharge step (S500) is performed. This is a process of discharging the painting network to the outside at the same time that the melting of the powder coating material is completed. As shown in FIGS. 8 to 10, As the transport rollers 720 are rotated again, the paint net 500 is moved backward and is drawn out through the discharge port 114 of the heating furnace.

Thereafter, the paint drying step (S600) is performed. In the process of drawing the paint net out, the powder coating on the surface of the metal slug particles is cooled and dried to complete the powder coating, and each slug particle is dried by the powder coating So that they are individually dried without being tangled with each other.

In more detail, as shown in FIGS. 8 to 10, the metal slug particles pass through the discharge port together with the paint net while the cooling air supply unit 210 is operated, Thereby generating cooling air.

Accordingly, the high-pressure cooling air generated from the cooling air supply unit 210 is moved along the first connection pipe 212 to a position below the discharge port 114, and then is injected toward the upward direction through the first injection nozzle 220 do.

At this time, the cooling air is injected from the lower side of the perforated plate 510 to the upper side so as to pass through the respective through holes 512 of the perforated plate 510.

As the cooling air passes through the through holes 512 in this form, the slug particles that are seated on the respective through holes 512 are floated to the air simultaneously by the air pressure of the compressed air.

At this time, as described above, since the injection direction of the first injection nozzle is formed diagonally, the metal slug particles fly in oblique direction.

As each metal slug particle is floated in the air, the powder coating on the surface is fused to the surface of the slug particle as the temperature is instantaneously lowered and dried.

As each slug particle is blown out into the atmosphere when it is blown to the atmosphere, each metal slug particle is separated from each other. In this state, since the powder paint of each slug particle is fused to the particle surface after cooling and drying, The slug particles do not become entangled with each other by the powder coating material during the drying and fusing process of the powder coating material.

As a result, the powder coating on the surface is dried and fused with each slug particle completely separated from each other.

In addition, as shown in FIG. 11, the additional floatation and drying step (S700) is performed in the state that each metal slug particle is levitated in the air, because the high-pressure cooling air is additionally injected through the second injection nozzle 230 This is a process in which the time during which each metal slug particle is placed in the atmosphere is increased.

In other words, since the drying time of the powder coating material may be short due to a short period of time in which each slug particle is levitated and dried by the wind pressure of the first spray nozzle, It is possible to increase the drying and fusion efficiency of the powder coating material by additionally supplying the cooling air through the nozzle.

As described above, when the injection direction of the second injection nozzle is different from the direction of the first injection nozzle, the metal slug particles finally fly along the injection direction of the second injection nozzle to the collection point to increase the collection efficiency .

If the drying and fusion of the powder coating material can be sufficiently achieved by floating the slug particles through the blowing of the first injection nozzle 220, the second injection nozzle and the second connection pipe may not be used or the construction itself may be omitted have.

As the slug particles are blown to the air by the blowing force, the slug particles float to the air while being separated from each other, and when the powder coating material is cooled and dried in the floating state, the slug particles So that they do not stick together.

The slug particles that have been dried and fused with the powder coating are collected on the floor, and the metal slug particles in this state are separated from each other and the powder coating is fused on each surface.

Thereafter, each slug particle is drawn out to be used as various building materials.

As described above, the powder coating is performed using the fact that the iron particles are contained in the slag particles generated in the smelting process, so that the coating quality can be higher than the conventional liquid coating method,

During the drying process of the powder coating material, each slug particle is blown to the atmosphere by the air pressure of the compressed air to dry the powder coating on the surface, so that the slug particles are prevented from being entangled in the drying process, So that it is possible to perform the above operation.

[Fig. 13] is a view showing a modified example of the present invention,

This modified example is a state in which the coated nets 500 are made into a belt structure having an endless track shape and a first driving roller 730 and a second driving roller 740 are provided in the entrance and exit 114 instead of the conveying roller The end of the paint web is wound around the first drive roller 730 and the second drive roller 740.

In this case, when the first driving roller and the second driving roller rotate, the painting net 500 rotates in an endless track shape and the metal slug particles seated on the upper side are taken out to the outside

In this case, the powder coating process is performed in the heating furnace, unlike the above embodiment in which the paint network is placed outside the heating furnace.

The above-described features of the present invention can be variously modified and combined by those skilled in the art. However, such modifications and combinations may be applied to the surfaces of the metal slug particles, in which the slug particles are levitated It should be judged that the slag particles belong to the protection scope of the present invention when they are related to the constitution and purpose of enabling the individual surface coating in a state where the slug particles are separated from each other as the powder coating is dried and fused.

100: heating section 110: heating furnace
112: heating space 114:
117: Entry opening 118: Opening and closing door
120: Heating device 150: Installation duct
152: space part 154: guide ball
200:
210: cooling air supply unit 212: first connection pipe
220: first injection nozzle 214: second connection pipe
230: Second injection nozzle
300: Temperature sensor
500: paint network 510: perforated plate
512: through hole 520: connection frame
600: powder coating table 610: paint supply part
620: paint spray nozzle 700:
710: driving force generating member 720: conveying roller
730: first drive roller 740: second drive roller
1: slug particle
S100: Slug particle deposition step S200: Powder coating step
S300: Painting network setting step S400: Painting melting step
S500: Paint network transfer step S600: Paint drying step

Claims (7)

A heating furnace having a heating space formed therein and having a discharge port connected to the outside of the heating space,
A heating device formed in the heating furnace and capable of heating the heating space,
A transfer part formed in the heating space,
The metal slug particles are arranged on the upper surface of the heating space, and the metal slug particles are arranged on the upper surface of the upper surface of the metal slug particles. A coating network in the form of a conductor,
A powder coating which is electrically connected to the coating network and is capable of powder coating on the surface of the metal slug particles,
A cooling air supply unit for supplying cooling air and a cooling air supply unit for supplying cooling air to the lower side of the painting net in the process of passing the paint net and the metal slug particles through the discharge opening, And a first spray nozzle for spraying in an upward direction,
The metal slug particles are lifted into the outside atmosphere of the heating furnace by the cooling air injected through the first injection nozzle and simultaneously the powder coating material on the surface is dried
Surface coating equipment for metal slug particles.
The method of claim 1,
Wherein the conveying unit includes a driving force generating unit and a conveying roller connected to the driving force generating unit and rotatable in a state of being located in the heating space,
The coating network is in the form of a plate and is conveyed by the rotational force of the conveying roller in a state of being connected to the conveying roller
Surface coating equipment for metal slug particles.
The method of claim 1,
Wherein the transfer section includes a first drive roller located in the heating space and a second drive roller located around the discharge port,
The coating network is a belt type in the form of an endless track, and both ends are wound on the first and second driving rollers and rotated in an endless track form
Surface coating equipment for metal slug particles.
The method of claim 1,
The above-
And a second injection nozzle which is located outside the heating furnace and discharges cooling air from the outside of the discharge port,
The metal slug particles are lifted by the cooling air injected through the second injection nozzle in a state where the metal slug particles are primarily floated by the air injected from the first injection nozzle during the passage of the metal slug particles through the discharge port, Of powder coating is additionally dried
Surface coating of metal slug particles.
3. The method of claim 2,
Wherein the heating furnace is provided at one side thereof with an entry port through which the painting net can enter the heating space from the outside,
And an opening / closing door formed at the inlet and the outlet so as to open / close the inlet / outlet,
Surface coating of metal slug particles.
A method of coating a surface of a metal slug particle using the structure according to any one of claims 1 to 5,
A slug particle settlement step in which metal slug particles are dispersed and placed on the top surface of a net-shaped paint net,
A powder coating step of spraying a powder coating material on the surface of the metal slug particle in a state where a current is supplied to the metal slug particle by connecting a power source to the paint network,
A painting net installation step of horizontally placing the painting net in a heating space inside the heating furnace,
A paint melting step of heating the heating space with the heating device to melt the powder coating material on the surface of the metal slug particles,
A paint net discharge step in which the paint slug is moved by the transfer unit and the metal slug particles, which are seated in the paint net during the movement, pass through the discharge port;
A drying step of spraying cooling air upward from below the painting net in the step of discharging the slag particles to dry the powder coating material on the surface while the slag particles are lifted into the outside air of the heating furnace,
Of the metal slug particles.
The method of claim 6,
Wherein the cooling air is sprayed through the second spray nozzle during the paint drying step so that the metal slug particles floating in the air are secondarily lifted and the surface paint is dried,
Wherein the metal slug particles are coated on the surface of the metal slug particles.

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