KR20190073899A - Coating jig for aluminium extrusion profile, chrome coating method with that coating jig, and aluminium extrusion profile with that chrome coating method - Google Patents

Abstract

The present invention relates to chromium coating and, more specifically, to a chromium coating method for an aluminum extrusion profile using sputtering and an aluminum extrusion profile coated with chromium by the same. A jig for coating an aluminum extrusion profile includes a lower plate member, a column member, a profile support member, and an upper fixing member.

Description

[0001] The present invention relates to an aluminum extrusion profile coating jig, a chromium coating method using the jig, and a coated aluminum extrusion profile,

The present invention relates to a chromium coating, and more particularly to a jig for aluminum extrusion profile coating using sputtering, a chromium coating method using the jig, and an aluminum extrusion profile coated by the method.

Generally, aluminum is subjected to a process of converting an aluminum billet into a profile of a specific shape by a pre-designed mold in a desired shape. This process is called a thermal extrusion process and can be applied to a light metal which undergoes plastic deformation of a mold by pressure under a relatively low temperature range of 500-600 ° C. such as aluminum.

The aluminum extrusion profile produced by extrusion is subjected to a heat treatment and a surface treatment step. Normally, surface treatment is mainly made of polishing and rust prevention coating. However, anodizing technique to which aluminum is mainly applied is still applied for protection and corrosion prevention purpose. However, The application is limited, and it is difficult to apply it in a place where high gloss is required, such as chrome gloss.

In particular, aluminum extrusion profiles are used industrially for various applications in office supplies, factory assemblies, supports for construction and support of equipment, construction sites, building interiors, and elevators. Coated aluminum profiles can be used to provide higher added value In particular, it is necessary to develop a technology capable of easily forming a high-gloss chrome coating on the surface of aluminum extruded profile, because it can have a characteristic of metallic gloss, luxury, and antibacterial property through chromium coating Existed.

As a result of efforts to solve the above problems, the inventor of the present invention has completed the present invention by developing chromium coating technology of an aluminum extruded profile having a very high gloss by a PVD method rather than a conventional wet plating method.

It is therefore an object of the present invention to provide an aluminum extrusion profile having a structure that can be stably fixed to one jig without using another jig every time even if at least one of the size and shape of the extrusion profile is changed for coating the aluminum extrusion profile And to provide a coating jig.

Another object of the present invention is to provide a method of chrome coating of an aluminum extruded profile, which is superior in gloss of a chromium coating layer to a chromium coating of an aluminum extruded profile fixed with a coating jig than conventional methods.

Another object of the present invention is to provide a chrome coated aluminum extrusion profile that not only improves the gloss and surface roughness of the chrome coating layer but also has better performance through the buffer layer and / or the protective layer.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above-described object of the present invention, And a hollow portion protruding from the central portion of the bottom plate member to a predetermined size and having an upper portion opened and a predetermined depth from the opening to a lower side, the hollow portion having an inner diameter increasing toward the opening side from the upper certain height, A pillar member; A profile supporting member detachably attached to an inclined surface of the hollow portion and having a through hole formed at a central portion thereof so that an aluminum extrusion profile can be inserted; And an upper fixing member installed on an upper portion of the profile supporting member in a state where the aluminum extrusion profile is inserted into the profile supporting member and fixing the profile supporting member to the column member. do.

In a preferred embodiment, the profile supporting member is formed so as to contact the inclined surface to the lower side surface side thereof, and the inner surface of the profile supporting member is in contact with the aluminum extrusion profile.

In a preferred embodiment, when the profile of the aluminum extrusion profile is not identical to the profile of the inner surface of the profile support member, the aluminum extrusion profile has an inner diameter that can be inserted and constrained, And an adapter member having the same structure as the adapter member.

In a preferred embodiment, the upper fixing member is formed with a hollow portion of a size and shape in which the pillar member can be inserted, the lower surface of the hollow portion is opened, and the upper surface thereof is in contact with the upper surface of the profile supporting member And a female screw is formed on the inner surface of the hollow portion.

In a preferred embodiment, the upper fixing member is screwed to the column member so that the female screw formed on the inner surface of the hollow portion of the upper fixing member is engaged with the male screw formed on the outer surface of the column member, Thereby fixing the aluminum extrusion profile.

In a preferred embodiment, the profile support member is comprised of two parts formed in opposing shapes.

The present invention also provides a method of manufacturing an aluminum extrusion profile, comprising the steps of: fixing an aluminum extrusion profile to a jig; And a chromium coating step of forming a chromium coating layer by coating the aluminum extrusion profile with chromium in a target with an RF substrate bias of 10 to 20 W and a DC target power of 300 to 600 W for 30 minutes to 60 minutes An aluminum extrusion profile chrome coating method is provided.

In a preferred embodiment, the method further comprises forming a diffusion barrier layer as a refractory material prior to performing the chromium coating step.

In a preferred embodiment, the refractory material is one or more of Ti, TiN, and Mo.

In a preferred embodiment, the method further comprises forming a protective layer with Teflon on the chrome coating layer.

The present invention also relates to an aluminum extrusion profile; And a chrome coating layer coated on the aluminum extrusion profile, wherein the chrome coating layer has a brightness (gloss, L ^* ) of 85% or more.

In a preferred embodiment, the aluminum extrusion profile is formed in a liquid nitrogen cooling mode.

In a preferred embodiment, the aluminum extrusion profile further includes a diffusion barrier layer formed of a refractory material between the chrome coating layer.

In a preferred embodiment, the refractory material is one or more of Ti, TiN, and Mo.

In a preferred embodiment, the protective layer further comprises a Teflon protective layer for protecting the chromium coating layer on the chromium coating layer.

The present invention has the following excellent effects.

According to the aluminum extrusion profile coating jig of the present invention, even if at least one of the size and the shape of the extrusion profile is changed for coating the aluminum extrusion profile, the aluminum extrusion profile can be stably formed in one jig without using any other jig Can be fixed.

In addition, according to the chromium coating method of the aluminum extrusion profile of the present invention, chromium coating of the aluminum extruded profile fixed with the coating jig can provide optimum sputtering conditions with better chrome coating layer brightness than conventional methods.

Further, the chromium-coated aluminum extrusion profile of the present invention not only improves the gloss and surface roughness of the chrome coating layer but also has better performance through the buffer layer and / or the protective layer.

FIG. 1A is an assembled perspective view of a coating jig according to an embodiment of the present invention, and FIG. 1B is an exploded perspective view.
FIG. 2A is a schematic cross-sectional view of a state in which the aluminum extrusion profile is fixed by the coating jig shown in FIG. 1A, and FIG. 2B is a perspective view.
FIG. 3A is a perspective view of one embodiment of a profile supporting member included in the coating jig of the present invention, and FIG. 3B is a sectional view.
4 is a rear perspective view of the upper fixing member included in the coating jig of the present invention.
Figure 5 is a measure of the brightness (gloss, L ^*) (%) of the specimen shows a graph resulting chromium coating layer formed according to the coating method of the present invention.
FIG. 6 is a graph illustrating the change in brightness when a Teflon coating layer is formed on a chrome coating layer according to the coating method of the present invention.

Although the terms used in the present invention have been selected as general terms that are widely used at present, there are some terms selected arbitrarily by the applicant in a specific case. In this case, the meaning described or used in the detailed description part of the invention The meaning must be grasped.

Hereinafter, the technical structure of the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Like reference numerals used to describe the present invention throughout the specification denote like elements.

The first technical aspect of the present invention is to provide a method of fixing an aluminum extrusion profile of various sizes and shapes stably with one jig without using any other jig when the aluminum extrusion profile is coated even when at least one of the size and shape of the aluminum extrusion profile is varied A jig for coating an aluminum extrusion profile of the present invention will be described in more detail with reference to FIGS. 1A to 4.

FIG. 1A is an exploded perspective view of a coating jig according to an embodiment of the present invention, FIG. 1B is an exploded perspective view, FIG. 2A is a schematic cross-sectional view in a state where an aluminum extrusion profile is fixed by the coating jig shown in FIG. FIG. 3B is a cross-sectional view of the embodiment of the profile supporting member included in the coating jig of the present invention, and FIG. 4 is a cross- FIG.

1A and 1B, the aluminum extrusion profile coating jig 100 includes a lower plate member 110, a pillar member 120, a profile supporting member 130, and an upper fixing member 140 Able to know. If necessary, an adapter member (not shown) may be further included.

First, the lower plate member 110 is a component for fixing the coating jig 100 to the upper surface of the apparatus on which the rotary element including the rotary shaft is mounted so that the rotary shaft is the rotation center of the coating jig 100. In one embodiment, the bottom plate member 110 is a flat plate member and can be bolted tightly to the top surface of the apparatus through screw holes 111 spaced apart at regular intervals.

The pillar member 120 is formed to protrude into a columnar shape having a predetermined size at the center of the bottom plate member 110. In particular, the columnar member 120 may have a columnar shape with a hollow having a predetermined depth. The pillar member 120 may be integrally formed with the lower plate member 110 and may be removably formed.

As shown in one embodiment, the columnar member 120 is formed in a cylindrical shape as a whole, and has a hollow portion 122 formed at a predetermined depth from the opening 121 to the lower side, that is, the bottom plate member 110 side, . The hollow portion 122 may be formed with an inclined surface 122a with an inner diameter increasing toward the opening 121 side from the upper certain height. The lower end diameter of the slope 122a may be equal to the lower diameter of the hollow portion 122 and the upper end diameter of the slope 122a may be equal to the upper diameter of the hollow portion 122, The lower diameter of the hollow portion 122 is smaller than that of the aluminum extrusion profile 200 because the aluminum extrusion profile 200 fixed to the aluminum extrusion profile coating jig of the present invention is inserted into the hollow portion 122 of the column member 120. [ May be greater than the diameter In addition, a male screw 123 may be further formed on the outer side surface of the pillar member 120 to be screwed to the upper fixing member 140.

The profile supporting member 130 is detachably attached to the inclined surface 122a formed in the hollow portion 122 of the pillar member 120 and has a structure in which a through hole is formed in the center portion so that the aluminum extrusion profile 200 can be inserted, Even if the size of the extrusion profile 200 is changed, it functions as a supporting element for holding the aluminum extrusion profile 200 to be fixed to the jig 100.

3A and 3B, one embodiment of the profile supporting member 130 will be described. The profile supporting member 130 has a ring shape having a predetermined height and thickness, It is possible to form a plane parallel to the outer surface of the aluminum extrusion profile 200 so that the cylindrical aluminum extrusion profile has a maximum contact surface with the outer surface. 3B, the outer side surface of the profile supporting member 130 is formed so as to have a shape different from that of the side surface lower part 131 and the upper surface, . As shown in the drawing, the side lower portion 131 is formed to be inclined with decreasing thickness from the baseline so as to have a surface parallel to the inclined surface 122a of the pillar member 120, The upper surface 133 constituting the upper portion of the profile supporting member 130 has a greater thickness than the lower lower surface. When the profile supporting member 130 is formed as described above, the aluminum extruded profile inserted into contact with the inner surface of the profile supporting member 130 can be firmly supported on the pillar member 120.

In particular, if the profile supporting member 130 is composed of two semicircular shapes, that is, two parts formed opposite to each other as shown in the figure, the profile supporting member 130 is slightly spaced so that the diameter of the aluminum extrusion profile It is possible to firmly fix the coated paper 100 to the coated paper 100. If necessary, an adapter (not shown) may be used to cover and cover the diameter of the aluminum extrusion profile in a considerably wide range.

The upper fixing member 140 is installed on the upper side of the profile supporting member 130 with the aluminum extrusion profile 200 inserted into the profile supporting member 130 to fix the profile supporting member 130 to the pole member 120 In particular the upper fixing member 140 is formed by pressing the profile supporting member 130 at the upper portion to wedge the profile supporting member 130 to the inclined surface 122a of the pillar member 120, To secure the aluminum extrusion profile securely.

Referring to FIG. 4, the upper fixing member 140 includes a hollow portion 141 having a size and shape in which the column member 120 can be inserted, The lower surface is opened to form the lower opening 142 and the upper surface is also opened to form the upper opening 143. The upper opening 143 is a surface that can contact the upper surface 133 of the profile supporting member 120 And a female screw is formed on the inner surface of the hollow portion 141. The rotary flange may be formed in a cylindrical shape as a whole.

Therefore, the upper portion of the profile supporting member 130, which is disposed in contact with the inclined surface 122a of the column member 120 while the aluminum extrusion profile 200 is inserted into the profile supporting member 130, When the member 140 is installed, the upper fixing member 140 is rotated such that the female screw 144 formed on the inner surface of the hollow portion 141 of the upper fixing member 140 is engaged with the male screw 123 formed on the outer surface of the pillar 120 It can be seen that the profile supporting member 130 can be firmly wedged to the pillar member 120 by screwing the pillar member 120 thereto.

Although not shown, in order to coat an aluminum extruded profile different from the shape of the inner surface of the hollow portion 122 formed on the pillar member 120 and / or the profile supporting member 120, an adapter member (not shown) . The shape of the adapter member is not limited as long as the aluminum extrusion profile 200 has an inner diameter to which the aluminum extrusion profile 200 can be inserted and the outer diameter thereof is the same as the inner surface of the profile supporting member 130.

A second technical feature of the present invention resides in an aluminum extruded profile chromium coating method for forming a high quality chromium coating layer on a surface of an aluminum extrusion profile using a PVD method or sputtering instead of a wet plating method.

Accordingly, the aluminum extruded profile chromium coating method of the present invention includes the steps of securing an aluminum extrusion profile to a jig; And a chromium coating step of forming a chromium coating layer on the aluminum extrusion profile using chromium as a target.

Here, the aluminum extrusion profile uses the above-described coating jig, and the chromium coating step is, as an embodiment, coated for 30 minutes to 60 minutes under conditions that the RF substrate bias is 10 to 20 W and the DC target power is 300 to 600 W The process gas may be argon while maintaining the pressure at 1 to 2 mtorr.

As another embodiment, the SC (substrate cleaning process is carried out for 30 minutes in an argon gas atmosphere at a pressure of 2 mTorr for 30 minutes with a substrate bias of 1 kW, and the target cleaning is performed at DC 2 kW and a pressure of 2 mTorr for 30 minutes. , DC 3 kW, and a pressure of 1.5 mTorr for 10 minutes, which is sputter deposited using the coating jig of the present invention. The distance from the target can be variously changed, It is possible to coat the product with the aluminum profile. However, when the product is coated, it can be mass-produced by sputtering using the coin battery, and can be coated by the short throw method using the coated paper of the present invention. It is possible to install the coated paper of the present invention on a plurality of confinement jigs while shortening the distance between the profiles A theory.

Examples 1 to 5

The aluminum extrusion profile was fixed with the above-described coating jig in the sputtering apparatus under the process conditions shown in Table 1 below, and then chromium coating was performed to obtain respective specimens.

Specimen Number RF substrate Bias (W) DC target
Power (W) Time (min) Pressure (mtorr) Ar (sccm) Example 1 (KUA-038) 10 600 60 One 40 Example 2 (KUA-047) 10 600 30 2 50 Example 3 (KUA-049) 10 600 30 One 20.6 Example 4 (KUA-052) 10 600 30 1.5 30 Example 5 (KUA-025) 20 300 60 One 30

Comparative Examples 1 to 3

Chromium coating was carried out in the same manner as in Example 1 except that the process conditions as shown in Table 2 were used to obtain respective specimens.

Specimen Number RF substrate Bias (W) DC target
Power (W) Time (min) Pressure (mtorr) Ar (sccm) Comparative Example 1 (KUA-016) 200 50 60 One 30 Comparative Example 2 (KUA-023) 200 50 60 One 30 Comparative Example 3 (KUA-024) 200 100 60 One 30

Experimental Example 1

Brightness (gloss, L ^* ) (%) of the specimens obtained in Examples 1 to 5 and Comparative Examples 1 to 3 was measured, and the results are shown in Table 3 and FIG.

Specimen Number Brightness (gloss, L ^* ) (%) Example 1 (KUA-038) 85.11 Example 2 (KUA-047) 85.25 Example 3 (KUA-049) 85.39 Example 4 (KUA-052) 85.43 Example 5 (KUA-025) 85.05 Comparative Example 1 (KUA-016) 70.03 Comparative Example 2 (KUA-023) 69.92 Comparative Example 3 (KUA-024) 70.28

As shown in FIG. 5, it can be seen that the brightness of the specimen according to the embodiment of the present invention is at least 10% higher than the specimen obtained in the comparative examples.

Experimental Example 2

Teflon coating was performed on the specimens obtained in Examples 1 to 5 and Comparative Examples 1 to 3 under the following process conditions (RF substrate bias: 50 W, RF target power: 50 W, pressure of 2.5 mTorr for 60 minutes) And the results are shown in Fig.

As shown in FIG. 6, even when a Teflon coating layer is further formed as a protective layer on the chromium coating layer, the transparency of the Teflon coating layer is high and the brightness of the chromium coating layer is not significantly changed.

Therefore, if a Teflon coating layer is formed on the chromium coating layer, the Teflon coating layer has a high hardness, so that the chromium coating layer can be well protected from scratches and the like.

Meanwhile, although not shown in the drawings, a phenomenon that the pressure rises during the plasma cleaning of the aluminum extrusion profile in the course of the experiment was observed, and it was judged that a phenomenon in which the internal bubbles were trapped was heat and released to the surface due to temperature rise . In addition, when the target power is high or the bias power is high, a lot of heat may be generated, and since the temperature rises to the chamber temperature, the color of the chromium coating layer tends to darken when the inner bubble is emitted. Therefore, if the diffusion preventing layer is coated with a refractory material such as titanium (Ti), titanium nitride (TiN), or molybdenum (Mo) before forming the chromium coating layer on the aluminum extrusion profile, the quality of the chromium coating layer can be prevented from deteriorating.

Finally, a third technical feature of the present invention is to provide a chromium-coated aluminum extrusion profile that not only improves the gloss and surface roughness of the chrome coating layer but also has better quality through the buffer layer and / or the protective layer.

Thus, the chrome coated aluminum extrusion profile of the present invention may be an aluminum extrusion profile; And a chromium coating layer coated on the aluminum extrusion profile, wherein the brightness (glossness, L ^* ) of the chromium coating layer is 85% or more. In particular, the chromium coating layer is not a wet plating coating but a PVD coating.

The aluminum extrusion profile used in the present invention is formed by a liquid nitrogen cooling method. The aluminum extrusion profile is formed by a diffusion preventing film layer formed of a refractory material between the aluminum extrusion profile and the chrome coating layer and / or a diffusion preventing film layer formed of Teflon And may further comprise a protective layer. Here, the refractory material may be any one or more of Ti, TiN, and Mo.

With this configuration, the chromium-coated aluminum extrusion profile of the present invention can provide a high-quality chromium coating layer having a bright luster to impart not only sophisticated metal texture but also antibacterial property, thereby providing high added value.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, Various changes and modifications will be possible.

100: Coating jig 110: Lower plate member
120: column member 121: opening
122: hollow part 122a: sloped surface
123: Male thread
130: profile supporting member 131:
132: inner surface 133: upper surface
140: upper fixing member 141: hollow
142: lower opening 143: upper opening
144: Female thread 200: Aluminum extrusion profile

Claims (15)

A lower plate member fixed to the rotating shaft;
And a hollow portion protruding from the central portion of the bottom plate member to a predetermined size and having an upper portion opened and a predetermined depth from the opening to a lower side, the hollow portion having an inner diameter increasing toward the opening side from the upper certain height, A pillar member;
A profile supporting member detachably attached to an inclined surface of the hollow portion and having a through hole formed at a central portion thereof so that an aluminum extrusion profile can be inserted; And
And an upper fixing member installed on an upper portion of the profile supporting member in a state where the aluminum extrusion profile is inserted into the profile supporting member and fixing the profile supporting member to the column member.
The method according to claim 1,
Wherein the profile supporting member is formed in such a manner that the profile supporting member is in contact with the inclined surface to the lower side surface side thereof and the inner surface of the jig is in contact with the aluminum extrusion profile.
3. The method of claim 2,
Wherein the profile of the aluminum extrusion profile is not the same as the profile of the inner surface of the profile supporting member, the aluminum extrusion profile has an inner diameter to which the aluminum extrusion profile can be inserted, Wherein the jig is made of aluminum.
4. The method according to any one of claims 1 to 3,
The upper fixing member is formed with a hollow portion of a size and shape in which the column member can be inserted, the lower surface of the hollow portion is opened, and the upper surface thereof has a surface capable of contacting the upper surface of the profile supporting member. And a female screw is formed on an inner surface of the hollow portion.
5. The method of claim 4,
The upper fixing member is screwed to the pillar member so that the female screw formed on the inner surface of the hollow portion of the upper fixing member is engaged with the male screw formed on the outer surface of the pillar member so that the profile supporting member is supported by the pillar member, Wherein the profile is fixed. 4. The method according to any one of claims 1 to 3,
Wherein the profile supporting member comprises two parts formed in opposing relation to each other.
Fixing the aluminum extrusion profile to the jig; And
And a chromium coating step of forming a chromium coating layer by coating the aluminum extruded profile with chromium in a target with an RF substrate bias of 10 to 20 W and a DC target power of 300 to 600 W for 30 minutes to 60 minutes, Extrusion profile chrome coating method
8. The method of claim 7,
Further comprising forming a diffusion barrier layer from the refractory material prior to performing the chromium coating step.
9. The method of claim 8,
Wherein the refractory material is one or more of Ti, TiN, and Mo.
8. The method of claim 7,
And forming a protective layer with Teflon on the chrome coating layer.
Aluminum extrusion profile; And
And a chromium coating layer coated on the aluminum extrusion profile,
Wherein the chrome coating layer has a brightness (gloss, L ^* ) of 85% or more.
12. The method of claim 11,
Wherein the aluminum extrusion profile is formed by a liquid nitrogen cooling process.
12. The method of claim 11,
Further comprising a diffusion barrier layer formed of a refractory material between the aluminum extrusion profile and the chromium coating layer.
14. The method of claim 13,
Wherein the refractory material is at least one of Ti, TiN, and Mo.
12. The method of claim 11,
And a protective layer formed of Teflon for protecting the chromium coating layer on the chromium coating layer.

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