KR20160020337A - arc metal spray system, and method of arc spray using the same - Google Patents

Abstract

Provided is an arc metal spray system. The arc metal spray system comprises: a first arc nozzle to which wire rods of a first metal are guided; a second arc nozzle to which wire rods of a second metal are guided, having a diameter greater than the first arc nozzle; and a center air nozzle to inject compressed air to the first wire rods and the second wire rods which are melted by arcs by being injected from outlets of the first arc nozzle and the second arc nozzle.

Description

Arc spraying system, and an arc spraying method using the arc spraying system,

The present invention relates to an arc spraying system and an arc spraying method using the same, and more particularly, to an arc spraying system having arc nozzles having different diameters, and an arc spraying method using the arc spraying system.

Arc arc spraying is a technique in which arc heat is generated between two metal wires to scatter metal wire melted by arc heat with compressed air to deposit on the surface of the work.

Since the molten metal wire is directly heated by arc heat, it has high heat efficiency and high adhesion to materials, and is widely used in various fields requiring metal coating.

As disclosed in Korean Patent Laid-Open Publication No. 2003-0085391 (Application No. 10-2002-0023803), a coating arc spraying system configured to enable a continuous arc spraying operation using a wire feeder that a worker can grasp on the back is developed .

Depending on the thickness and / or diameter of the metal wire to be provided, the formation rate, thickness, quality, etc. of the coating film formed by applying the molten metal wire may vary. In other words, in the case of forming a coating film relatively fast, it is possible to improve the spraying efficiency by using thick metal wires, and in the case of forming a coating film in a relatively fine portion, arc spraying is performed using a thin metal wire rod can do.

Accordingly, research and development of an arc spraying system having an arc nozzle capable of utilizing metal wires having various thicknesses / diameters and an arc welding method using the arc spraying system are needed.

Korean Patent Publication No. 2003-0085391

SUMMARY OF THE INVENTION It is an object of the present invention to provide a highly reliable arc spraying system and an arc spraying method using the same.

It is another object of the present invention to provide an arc spraying system with improved working efficiency and an arc spraying method using the same.

Another object of the present invention is to provide an arc spraying system capable of using metal wires having various thicknesses and / or diameters and an arc spraying method using the arc spraying system.

Another object of the present invention is to provide an arc spraying system having an arc nozzle whose size can be adjusted according to the thickness and / or diameter of a metal wire, and an arc spraying method using the arc spraying system.

The problems to be solved by the present invention are not limited to those described above.

In order to solve the above technical problems, the present invention provides an arc spraying system.

According to one embodiment, the arc spraying system includes a first arc nozzle to which a first metal wire is guided, a second metal wire to be guided, a second arc nozzle having a larger diameter than the first arc nozzle, And a center air nozzle injecting compressed air into the first and second metal wires injected from the ejection openings of the first and second arc nozzles and melted by the arc.

According to one embodiment, the arc spraying system further comprises: a third arc nozzle having a third metal wire guided and having the same diameter as the first arc nozzle, and a second arc nozzle having a fourth diameter smaller than that of the third arc nozzle And a fourth arc nozzle having a second arc nozzle.

According to one embodiment, the discharge port of the central air nozzle may be disposed between the discharge ports of the first and third arc nozzles, and between the discharge ports of the second and fourth arc nozzles.

According to one embodiment, the central air nozzle may include a plurality of ejection openings through which the compressed air is ejected.

According to an embodiment of the present invention, the arc spraying system includes a capping portion extending to decrease the diameter according to a direction in which the first and second metal wires are guided, and a capping portion surrounding the first and second arc nozzles .

According to one embodiment, the capping unit may include a first opening exposing the discharge openings of the first and second arc nozzles.

According to one embodiment, the arc spraying system may further include a shielding portion extending in a predetermined diameter according to a direction in which the first and second metal wires are guided, and surrounding the capping portion.

According to one embodiment, the shielding portion includes a second opening exposing the first openings of the capping portion and the discharge openings of the first and second arc nozzles, And a cover portion covering a space between the first opening and the second opening of the shielding portion.

According to one embodiment, the cover portion may include a third opening that exposes the first openings of the capping portion and the discharge openings of the first and second arc nozzles.

According to an embodiment, the size of the ejection openings of the first arc nozzle and the second arc nozzle may be adjusted.

In order to solve the above-mentioned technical problems, the present invention provides a method of using an arc spraying system.

According to one embodiment, the method of using the arc spraying system comprises the steps of preparing metal wires having different diameters, selecting one of the metal wires, arc spraying with arc nozzles having different diameters In the system, the method may include selecting the arc nozzle having a diameter corresponding to the diameter of the selected metal wire, and conducting the arc metal spray by guiding the metal wire with the arc nozzle.

According to one embodiment, the metal wires include first and second metal wires having different diameters and formed of different materials, and the step of selecting the arc nozzle comprises the step of selecting the diameter of the first metal wire And selecting an arc nozzle corresponding to the diameter of the second metal wire material, wherein performing the arc metal spraying comprises: spraying the first metal wire and the second metal wire And arc spraying the wire simultaneously.

The arc spraying system according to the embodiment of the present invention includes arc nozzles having different diameters. Accordingly, arc spraying can be performed using metal wires having various thicknesses adaptively to the user's convenience and work environment. Accordingly, a highly efficient arc spraying system with improved working efficiency can be provided.

1 is a view for explaining an arc spraying system according to an embodiment of the present invention.
2 is a front view of an arc event included in the arc spraying system according to the first embodiment of the present invention.
3 is an exploded perspective view of an arc event included in the arc spraying system according to the first embodiment of the present invention.
4 is an enlarged perspective view of an arc nozzle of an arc event included in the arc spraying system according to the second embodiment of the present invention.
5 is a view for explaining a discharge port size adjusting unit mounted on an arc nozzle included in an arc event according to a second embodiment of the present invention.
FIGS. 6 and 7 are diagrams for explaining an example of using an arc event according to the second embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the technical spirit of the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the concept of the invention to those skilled in the art.

Further, in the drawings, the thicknesses of the films and regions are exaggerated for an effective explanation of the technical content. Also, while the terms first, second, third, etc. in the various embodiments of the present disclosure are used to describe various components, these components should not be limited by these terms. These terms have only been used to distinguish one component from another. Thus, what is referred to as a first component in any one embodiment may be referred to as a second component in another embodiment. Each embodiment described and exemplified herein also includes its complementary embodiment. Also, in this specification, 'and / or' are used to include at least one of the front and rear components.

The singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It is also to be understood that the terms such as " comprises "or" having "are intended to specify the presence of stated features, integers, Should not be understood to exclude the presence or addition of one or more other elements, elements, or combinations thereof. Also, in this specification, the term "connection " is used to include both indirectly connecting and directly connecting a plurality of components.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 is a view for explaining an arc spraying system according to an embodiment of the present invention.

Referring to FIG. 1, the arc event 100 may be supplied with metal wire from the wire rod supplying part 200. The metal wires may be wound on the wire rod feeder 200. The metal wires wound on the wire rod supplying part 200 may be supplied to the arc incident 100 according to the amount of the metal wire consumed in the arc event 100. [

The control feeder 300 may supply compressed air and power to the arc event 100. A power source supplied from the control supply 300 is applied to the metal wires to generate an arc in the metal wires and the metal wires can be melted by the arc heat. The molten metal wire may be applied to the workpiece by compressed air injected from the arc event 100.

The arc spraying operator may hold the arc event 100 in his hand and scatter the molten metal toward the material. The arc spraying worker can melt and spray the metal wires of various sizes depending on the characteristics of the material and / or the external environment. Hereinafter, this will be described with reference to Figs. 2 to 4. Fig.

FIG. 2 is a front view of an arc event included in the arc spraying system according to the first embodiment of the present invention, FIG. 3 is an exploded perspective view of an arc event included in the arc spraying system according to the first embodiment of the present invention And FIG. 4 is an enlarged perspective view of an arc nozzle of an arc event included in the arc spraying system according to the second embodiment of the present invention.

2 to 4, an arc event according to an embodiment of the present invention includes first to fourth arc nozzles 110, 120, 130, 140, arc nozzles, a center air nozzle 150, a nozzle, a capping portion 160, a shielding portion 170, and a cover portion 180.

The first through fourth arc nozzles 110, 120, 130, and 140 may guide the first through fourth metal wires 112, 122, 132, and 142, respectively. The first to fourth metal wires 112, 122, 132, and 142 may be supplied from the wire rod supplying unit 200 described with reference to FIG. The first to fourth metal wire rods 112, 122, 132, and 142 discharged from the first to fourth arc nozzles 110, 120, 130 and 140 may be melted by an arc .

The first arc nozzle 110 and the third arc nozzle 130 may have substantially the same diameter and the second arc nozzle 120 and the fourth arc nozzle 140 may have substantially the same diameter Diameter. Accordingly, the diameters of the first and third metal wires 112 and 132 guided by the first and third arc nozzles 110 and 130 are equal to each other, and the diameters of the second and fourth arc nozzles 110 and 130, The diameters of the second and fourth metal wires 122 and 142 guided by the first and second metal wires 120 and 140 may be equal to each other.

According to an embodiment, the diameters of the second and fourth arc nozzles 120 and 140 may be larger than the diameters of the first and third arc nozzles 110 and 130. Accordingly, the diameters of the second and fourth metal wires 122, 142 may be larger than the diameters of the first and third metal wires 112, 132.

The central air nozzle 150 is disposed between the ejection openings of the first and third arc nozzles 110 and 130 and between the ejection openings of the second and fourth arc nozzles 120 and 140 . The central air nozzle 150 is connected to the first to fourth metal wires 112, 122, 132, and 142, which are discharged from the first to fourth art nozzles 110, 120, 130, The compressed air can be injected. According to one embodiment, as shown in FIGS. 2 and 3, the central air nozzle 150 may have a plurality of ejection openings through which compressed air is ejected. Alternatively, according to another embodiment, the central air nozzle 150 may have one discharge port through which compressed air is injected.

The capping unit 160 is extended to decrease the diameter according to a direction in which the first to fourth metal wires 112, 122, 132, and 142 are guided, and the first to fourth arc nozzles 110, 120, 130, 140). The capping unit 160 may include a first opening 162 exposing the discharge ports of the first through fourth arc nozzles 110, 120, 130, and 140. The first to fourth metal wires 112, 122, 132, and 142 melted by the arc are discharged from the center air nozzle 150 through the first opening 162, . ≪ / RTI > The first to fourth metal wire rods 112 (112, 122, 132, 142) are melted by the capping portion 160 whose diameter is reduced according to the direction in which the first to fourth metal wire rods 112, , 122, 132, 142) can be precisely controlled and scattered on the workpiece.

The shielding portion 170 may extend to a predetermined diameter along the direction in which the first to fourth metal wires 112, 122, 132, and 142 are guided to surround the capping portion 160. The shielding part 170 includes a second opening 172 for exposing the first opening 162 of the capping part 160 and the discharge openings of the first through fourth arc nozzles 110, 120, 130, ). The sealing portion 170 may protect the capping portion 160.

The cover 180 covers a space between the first opening 162 of the capping part 160 and the second opening 172 of the sealing part 170, A first opening 162 and a third opening 182 exposing the discharge openings of the first through fourth arc nozzles 110, 120, 130 and 140. The melted first to fourth metal wires 112, 122, 132, and 142 can be more precisely controlled and scattered by the cover 180 by the cover 180.

The first to fourth metal wire rods 112, 122, 132, and 142 are disposed in the first to fourth arc nozzles 110, 120, 130, and 130, respectively, 140, at least one of the first to fourth arc nozzles 110, 120, 130, 140 is selected so that the metal wire guided by the selected arc nozzle is sprayed by arc spraying It is obvious that it can be.

The arc spraying system according to the embodiment of the present invention includes arc nozzles having different diameters. Accordingly, arc spraying can be performed using metal wires having various thicknesses adaptively to the user's convenience and work environment. Accordingly, a highly efficient arc spraying system with improved working efficiency can be provided.

The method of using the arc spraying system according to the first embodiment of the present invention described above will be described below.

1 to 4, metal wires having different diameters are prepared. One of the metal wires may be selected. As described with reference to Figs. 2 to 4, in the arc spraying system having the first to fourth arc nozzles 110, 120, 130, 140 having different diameters, the diameter of the selected metal wire An arc nozzle having a corresponding diameter can be selected. The arc metal spraying may be performed by guiding the metal wires with the selected arc nozzle.

If the first metal wire and the second metal wire having different diameters are selected, an arc nozzle corresponding to the diameter of the first metal wire and an arc nozzle corresponding to the second metal wire may be selected . Thereafter, the first metal wire and the second metal wire may be arc-sprayed simultaneously. When the first metal wire and the second metal wire include different materials and the diameter of the second metal wire is larger than the diameter of the first metal wire, the content of the second metal in the coating layer formed by arc- May be higher than the content of the first metal. In other words, according to the properties required by the coating layer, the arc spraying process can be easily performed by adjusting the contents of metals.

In contrast to the first embodiment of the present invention described above, according to the second embodiment of the present invention, the diameter of the arc nozzle of the arc event can be adjusted. This will be described below with reference to Figs. 5 to 7. Fig.

5 is a view for explaining a discharge port size adjusting unit mounted on an arc nozzle included in an arc event according to a second embodiment of the present invention.

Referring to FIG. 5, at least one of the first to fourth arc nozzles 110, 120, 130, and 140 described with reference to FIGS. 2 to 4 may be provided with a discharge port size adjusting unit. The discharge port size regulating unit may be mounted at the discharge port of the first to fourth arc nozzles 110, 120, 130, and 140. The discharge port size regulating unit includes a plurality of segments Seg1, Seg2, ... SegN and may block the discharge ports of the first to fourth arc nozzles 110, 120, 130,

As the degree of overlap of the plurality of segments Seg1, Seg2, ... SegN increases, the size of the discharge port of the arc nozzle can be reduced. In this case, the metal wire having a relatively small diameter can be guided by the arc nozzle. On the other hand, unlike the above, the smaller the overlap degree of the plurality of segments Seg1, Seg2, ... SegN, the larger the size of the discharge port of the arc nozzle. In this case, the metal wire having a relatively large diameter can be guided by the arc nozzle.

According to the third embodiment, unlike the second embodiment of the present invention described above, the discharge port size regulating unit described with reference to FIG. 5 is different from the discharge port size regulating unit illustrated in FIG. 5 in that the center air nozzle 150 And can be mounted on the air outlet. In this case, the pressure of the compressed air injected from the central air nozzle 150 can be adjusted by the discharge port size adjusting unit.

Specifically, as the degree of overlap of the plurality of segments Seg1, Seg2, ... SegN increases, the size of the discharge port of the central air nozzle 150 can be reduced. In this case, the compressed air supplied from the central air nozzle 150 may be supplied to the molten metal wire through the discharge port having a relatively narrow size. Accordingly, the central air nozzle 150 is relatively High pressure compressed air can be injected into molten metal wires.

On the other hand, unlike the above, the smaller the degree of overlap of the plurality of segments Seg1, Seg2, ... SegN, the larger the size of the discharge port of the central air nozzle 150 can be. In this case, the compressed air supplied from the central air nozzle 150 passes through the discharge port having a relatively large size, and can be supplied to the molten metal wires. Accordingly, the central air nozzle 150 can inject compressed air having a relatively low pressure to molten metal wires.

According to another embodiment of the present invention, when the central air nozzle 150 includes a plurality of discharge ports, the discharge port size regulating units may be mounted on the plurality of discharge ports, and the sizes of the plurality of discharge ports may be respectively controlled .

FIGS. 6 and 7 are diagrams for explaining an example of using an arc event according to the second embodiment of the present invention.

6 and 7, the first to fourth arc nozzles 110, 120, 130, and 140 for guiding the first to fourth metal wires, An arc event is provided. The discharge port size adjusting unit described with reference to FIG. 5 may be mounted on the discharge ports of the first to fourth arc nozzles 110, 120, 130, and 140.

As shown in FIG. 6, the sizes of the ejection openings of the first to fourth arc nozzles 110, 120, 130, and 140 may be relatively large. In addition, the sizes of the first to fourth arc nozzles 110, 120, 130, and 140 may be substantially the same.

7, the sizes of the ejection openings of the first to fourth arc nozzles 110, 120, 130 and 140 may be different from each other by the toe-hole size regulating unit. Particularly, the segments of the discharge port size regulating portion mounted on the first and third arc nozzles 110 and 130 may be formed in the discharge port size regulating portion mounted on the second and fourth arc nozzles 120 and 140 Can be overlapped relatively more than segments. Accordingly, the diameter of the ejection openings of the first and third arc nozzles 110 and 130 may be larger than the diameter of the ejection openings of the second and fourth arc nozzles 120 and 140. Accordingly, the first and third arc nozzles 110 and 130 can guide relatively large diameter metal wires, and the second and fourth arc nozzles 120 and 140 have relatively small diameters Can be guided.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the present invention.

100: arc event
200:
300: control feeder
110, 120, 130, 140: first to fourth arc nozzles
112, 122, 132, 142: first to fourth metal wire rods
150: Middle air nozzle
160: capping portion
162: first opening
170:
172: second opening
180:
182: third opening

Claims (12)

A first arc nozzle through which the first metal wire is guided;
A second arc nozzle guided by the second metal wire and having a larger diameter than the first arc nozzle; And
And a center air nozzle for spraying the compressed air to the first and second metal wires injected from the ejection openings of the first and second arc nozzles and fired by the arc.
The method according to claim 1,
A third arc nozzle guided by the third metal wire and having the same diameter as the first arc nozzle; And
Further comprising a fourth arc nozzle having a fourth metal wire guided and having the same diameter as the third arc nozzle.
3. The method of claim 2,
And an outlet of the central air nozzle is disposed between the discharge ports of the first and third arc nozzles and between the discharge ports of the second and fourth arc nozzles.
The method according to claim 1,
Wherein the central air nozzle has a plurality of discharge ports through which the compressed air is injected.
The method according to claim 1,
Further comprising a capping portion extending to reduce the diameter along the direction in which the first and second metal wires are guided, the capping portion surrounding the first and second arc nozzles.
6. The method of claim 5,
Wherein the capping portion includes a first opening exposing the discharge openings of the first and second arc nozzles.
The method according to claim 6,
Further comprising a shielding portion extending in a predetermined diameter along the direction in which the first and second metal wires are guided and surrounding the capping portion.
8. The method of claim 7,
Wherein the shielding portion includes a second opening exposing the first openings of the capping portion and the ejection openings of the first and second arc nozzles,
And a cover portion covering a space between the first opening of the capping portion and the second opening of the shielding portion.
9. The method of claim 8,
Wherein the cover portion has a third opening that exposes the first opening of the capping portion and the outlets of the first and second arc nozzles.
The method according to claim 1,
Wherein the size of the ejection openings of the first arc nozzle and the second arc nozzle is adjusted.
Preparing metal wires having different diameters;
Selecting one of the metal wires;
In an arc spraying system including arc nozzles having different diameters, selecting the arc nozzle having a diameter corresponding to the diameter of the metal wire selected; And
And guiding the metal wires with the arc nozzle to perform arc metal spraying.
12. The method of claim 11,
Wherein the metal wires comprise first and second metal wires having different diameters and formed of different materials,
Wherein the step of selecting the arc nozzle comprises the steps of selecting an arc nozzle corresponding to the diameter of the first metal wire and selecting an arc nozzle corresponding to the diameter of the second metal wire,
Wherein performing the arc metal spraying comprises arc-spraying the first metal wire and the second metal wire simultaneously.

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