KR20220130841A - Aluminium based plated steel for floating solar installation and floating solar installation thereof - Google Patents

Abstract

According to the present invention, an aluminum-based plated steel for a floating-type solar energy generation facility and a floating-type solar energy generation facility including the same. The aluminum-based plated steel for the floating-type solar energy generation facility comprises: a carbon steel for rescue (10); an aluminum-plated diffusion layer (20) which consists of a base material structure formed by degreasing, washing and pickling, and fluxing the surface of the cast carbon steel for rescue (10) and a composite structure formed by penetration of molten aluminum (Al) into the base material structure; and an aluminum-plated layer (30) which is formed on the aluminum-plated diffusion layer (20) and comes in contact with seawater. The aluminum-plated diffusion layer (20) is formed by the penetration of the molten aluminum to a depth of 100 ㎛ or more for preventing corrosion caused by seawater and damage caused by waves. The present invention has an effect of maximizing the operational life of a floating-type solar energy generation facility.

Description

ALUMINIUM BASED PLATED STEEL FOR FLOATING SOLAR INSTALLATION AND FLOATING SOLAR INSTALLATION THEREOF}

The present invention relates to an aluminum steel material for a floating photovoltaic power plant and a floating photovoltaic device including the same, and more particularly, by including an aluminum steel material in which a support structure supporting a photovoltaic module is plated with molten aluminum. It relates to an aluminum steel material for a floating photovoltaic power plant that improves corrosion resistance and durability, and a floating photovoltaic device including the same.

Recently, in order to suppress the emission of carbon dioxide, which is the main culprit of environmental destruction, the development and supply of a power generation device using solar light, which is a clean energy, is gradually expanding. A photovoltaic device is a power generation device that converts light generated from the sun into electrical energy using a photovoltaic effect.

In order to increase the power generation capacity of the photovoltaic device, it is necessary to install a plurality of photovoltaic devices in a large area. However, in order to secure a large area for increasing the solar power generation capacity, there is a problem that not only the cost of land purchase, compensation, etc.

In order to solve this problem, floating solar power generation devices installed on the water surface of rivers, lakes, reservoirs, seas, etc. are emerging as an alternative.

Patent Document 0001 discloses a photovoltaic device 5000 including a photovoltaic conversion structure 2000 and a support structure 3000 , a first container 2100 , a protective plate 2200 , a heat sink 2300 , and a photovoltaic power module. A solar conversion structure 2000 including a 2400 and a reflector 2500, a second container 3100, a fastening bar 3200, a first power transmission device 3300, a second container 3100 on It is located and consists of a support structure 3000 including a support pillar 3500 coupled to the second container 3100, the support structure 3000 is high enough to pull the solar conversion structure (2000). A photovoltaic device 5000 that may be made of a material is described.

Patent Document 0002 discloses a base frame 111 comprising an outer frame 111a in the form of a frame having a predetermined area and an inner frame 111b provided inside the outer frame 111a and having a lattice structure; at least one inclined frame 112 provided to be inclined at a predetermined angle on an upper portion of the base frame 111; a solar power module 113 installed on the inclined frame 112; a footrest 115 provided on the base frame 111 and made of wood or metal; a guard rail 116 provided on an upper periphery of the base frame; And there is a description of the floating structure 100 for photovoltaic power generation including a unit floating structure 110 including a buoyancy means 114 provided at regular intervals in the lower portion of the base frame 111.

However, as described in Patent Document 0001, 0002, the structure used in the conventional floating photovoltaic power plant uses non-ferrous materials such as wood and plastic, or some frames are plated with zinc, painted or coated with steel.

As such, when the existing floating photovoltaic device is made of non-ferrous materials such as wood, plastic, etc., shock destruction by sea waves or typhoons occurs, and when a simple galvanized iron is installed in the floating photovoltaic device, seawater Due to the corrosion of the structure due to the significantly lowered device durability, there was a problem that the service life of the floating photovoltaic device is greatly reduced.

Korean Patent Application Laid-Open No. 10-2019-0129377 (published date: 2019. 11. 20.) Korean Patent Registration No. 10-1450846 (Registration Date: 2014. 10. 07.)

The technical problem to be achieved by the present invention is a floating photovoltaic power generation facility that can faithfully function as a steel material even in severe corrosive conditions of marine conditions while retaining the characteristics of iron as it is, and has excellent corrosion resistance in salty marine conditions An object of the present invention is to provide an aluminum steel material for use.

In addition, another technical problem to be achieved by the present invention is to provide a floating photovoltaic device including the above-described aluminum steel for floating photovoltaic equipment.

The object of the present invention is not limited to the object mentioned above, and other objects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description.

In order to solve the above problems, the present invention provides structural carbon steel (10); A base material structure formed by degreasing the surface of the cast structural carbon steel 10, washing with water and pickling, and flux treatment; and a composite structure formed by infiltrating molten aluminum (Al) into the base material structure. 20); and an aluminum plating layer 30 formed on the aluminum plating diffusion layer 20 and in contact with seawater, and in order to prevent corrosion by seawater and damage by waves, the aluminum plating diffusion layer 20 is molten aluminum ( Al) can provide an aluminum steel material for a floating photovoltaic power plant, characterized in that it is formed by penetrating to a depth of 100 μm or more.

The crystal grains of the aluminum plating layer 30 may have a diameter of 10 to 100 μm.

The composite structure may be composed of FeAl ₃ + Fe ₂ Al ₃ intermetallic compound.

In addition, the present invention provides a floating photovoltaic device comprising the aluminum steel material for the above-described floating photovoltaic equipment.

The present invention is a photovoltaic module 100 that receives sunlight and converts it into electricity; a support structure 200 for supporting the solar module; and a floating structure 300 that can be combined with the support structure 200 to install the photovoltaic module 100 on water. It is possible to provide a floating photovoltaic device, characterized in that mounted on the aluminum steel for the above-described floating photovoltaic equipment.

The support structure 200 includes a horizontal frame 210 provided on both lower sides of the support structure 200 ; a plurality of reinforcing bars 220 installed inside the horizontal frame 210 to reinforce the horizontal frame 210; a first vertical frame 230 installed on one side of the reinforcing bar 220 to support the solar module 300; and a second vertical frame 240 installed on the other side of the reinforcing bar 220 to support the solar module 300 .

The horizontal frame 210 is in the shape of a circular pipe bent twice in a U-shape, and one end and the other end of the horizontal frame 210 are of the horizontal frame 210 disposed at the rear of the horizontal frame 210 . It may be welded to one end and the other end, respectively.

The aluminum steel material for floating photovoltaic power generation equipment according to the present invention described above can faithfully function as a steel material even in severe corrosive conditions of marine conditions while retaining the characteristics of iron materials, and corrosion resistance in salty marine conditions An excellent steel material can be provided.

In addition, the present invention has the effect of maximizing the number of years of use of the floating photovoltaic device by plating the components used in the floating photovoltaic device with molten aluminum, and improving the corrosion resistance and durability of various parts.

1 is a cross-sectional view of an aluminum steel material for a floating solar power plant according to an embodiment of the present invention.
Figure 2 is a process flow chart of the aluminum steel manufacturing method for a floating solar power plant according to an embodiment of the present invention.
Figure 3 is another process flow chart of the aluminum steel manufacturing method for a floating solar power plant according to an embodiment of the present invention.
4 is an optical micrograph showing a cross section of an aluminum steel material for a floating solar power generation facility according to an embodiment of the present invention.
5 is a perspective view of a floating photovoltaic device according to an embodiment of the present invention.
FIG. 6 is a view for explaining a coupling relationship between the support structure 200 and the floating structure 300 shown in FIG. 5 .
7 is a plan view of the floating photovoltaic device shown in FIG. 5 .
8 is a front view of the floating photovoltaic device shown in FIG.
9 is a right side view of the floating photovoltaic device shown in FIG. 5 .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments introduced below are provided as examples so that the spirit of the present invention can be sufficiently conveyed to those skilled in the art. Accordingly, the present invention is not limited to the embodiments described below and may be embodied in other forms. And, in the drawings, the length, thickness, etc. of layers and regions may be exaggerated for convenience. Like reference numerals refer to like elements throughout.

1 is a cross-sectional view of an aluminum steel material for a floating solar power plant according to an embodiment of the present invention.

As shown in Figure 1, the aluminum steel material for a floating photovoltaic power plant according to an embodiment of the present invention is a structural carbon steel 10, an aluminum plating diffusion layer 20 formed on the structural carbon steel 10, and the aluminum plating and an aluminum plating layer 30 formed on the diffusion layer 20 .

In detail, the structural carbon steel 10 may have a predetermined shape and be cast from a structural carbon steel material to serve as a base material.

The aluminum plating diffusion layer 20 is formed by degreasing the surface of the cast structural carbon steel 10, washing and pickling, and flux treatment; is composed of

The aluminum plating layer 30 is formed on the aluminum plating diffusion layer 20 and is in contact with seawater.

The present invention includes the structural carbon steel 10, an aluminum plating diffusion layer 20 and an aluminum plating layer 30, and the aluminum plating diffusion layer 20 is formed by penetrating molten aluminum (Al) to a depth of 100 μm or more, Corrosion by seawater and damage by waves can be prevented.

In particular, the aluminum plating diffusion layer 20 is distinguished from the conventional thinly penetrated diffusion layer, and by the surface treatment process according to the present invention, molten aluminum penetrates into the surface-treated base material structure of the structural carbon steel 10 and is formed, It has the effect of having stronger interlayer cohesion and durability. The surface treatment process of the structural carbon steel 10 will be described later.

In addition, the diameter of the crystal grains of the aluminum plating layer 30 may be 10 to 100 ㎛. When the range of the grain diameter is satisfied, it is possible to faithfully function as a steel material even in severe corrosive conditions of marine conditions, and it is possible to provide a steel material having excellent corrosion resistance in salty marine conditions.

On the other hand, in the aluminum steel material for a floating solar power generation facility according to an embodiment of the present invention, the composite structure, FeAl ₃ + Fe ₂ Al ₃ It may be composed of an intermetallic compound. This composite structure forms a FeAl compound containing solid solution Fe, FeAl ₃ , Fe ₂ Al ₃ , and Si in which aluminum is dissolved, so that micro-cracks starting from the surface layer can no longer be diffused into the structural carbon steel 10 . have.

The aluminum steel material for floating photovoltaic power generation facilities according to the present invention includes the above-described structural carbon steel 10, aluminum plating diffusion layer 20 and aluminum plating layer 30, so that the corrosion inhibitory effect is large, and further, the aluminum plating layer 30 ), it is possible to significantly suppress the development of corrosion from the flaw in the coating film even when a defect occurs in the aluminum plating layer 30 or a scratch in which the structural carbon steel 10 is exposed.

Hereinafter, a method for manufacturing an aluminum steel material for a floating solar power plant according to the present invention will be described with reference to FIG. 2 .

Figure 2 is a process flow chart of the aluminum steel manufacturing method for a floating solar power plant according to an embodiment of the present invention.

As shown in Figure 2, the aluminum steel manufacturing method for a floating photovoltaic power plant according to an embodiment of the present invention, the casting step (S10) of casting the structural carbon steel 10, the cast structural carbon steel (10) A degreasing step (S20) of degreasing the surface, a surface treatment step (S30) of washing and pickling the surface of the structural carbon steel 10 that has undergone the degreasing step (S20), and a structural carbon steel (S30) that has been subjected to the surface treatment step (S30) 10) is immersed in a flux solvent in a flux treatment step (S40), the structural carbon steel 10 that has undergone the flux treatment step (S40) is immersed in a molten aluminum plating solution (S50), and the plating step (S50) is passed. It may include a post-treatment step (S60) of post-treatment of the structural carbon steel (10).

In the casting step (S10), in order to manufacture the support structure 200, the floating structure 300, the bolt, the nut, etc. in a predetermined shape of the floating solar power plant, the parts of the floating solar power generation facility are for structural use. It may be a step of casting a carbon steel material. At this time, the structural carbon steel 10 has a significant effect in reducing the manufacturing cost of the floating solar power plant because it is cheaper than high chromium steel.

The degreasing step (S20) may be a step of immersing the structural carbon steel (S10) in an alkali solvent.

The surface treatment step (S30) includes a first water washing step of washing the surface of the structural carbon steel 10 with water, and acid treatment of the structural carbon steel 10 that has undergone the first water washing step, so that the surface of the structural carbon steel 10 It may include a first pickling step of activating the, and a second water washing step of washing the surface of the structural carbon steel 10 that has undergone the first pickling step with water.

In the flux treatment step (S40), the structural carbon steel 10, which has undergone the second washing step, contains 35 to 50 wt% of potassium chloride, 5 to 10 wt% of cryolite, and 40 to 60 wt% of ammonium fluoride or aluminum fluoride. It may be a step of immersing in a flux solvent containing 10 to 30% by weight based on 100% by weight of water under a temperature condition of 40 to 90° C. for 1 to 10 minutes.

In the plating step (S50), 25 to 35 wt% of sodium chloride, 15 to 25 wt% of potassium chloride, 20 to 30 wt% of cryolite, ammonium hydrofluoric acid, ammonium hydrofluoride, or fluorine of the structural carbon steel that has undergone the flux treatment step (S40) is subjected to the plating step (S50). 5 ~ under a temperature condition of 680 ~ 750 ℃ in a molten plating solution in which 5 ~ 10% by weight of a molten flux consisting of a component ratio of 20 ~ 30% by weight of a fluoride selected from aluminum fluoride is added based on 100% by weight of molten aluminum Soaking for 30 minutes.

At this time, immersing the structural carbon steel 10 under the conditions of Equation 1 below allows the above-described aluminum plated diffusion layer 20 to penetrate into the structural carbon steel 10 well, and the thickness of the aluminum plated diffusion layer 20 is It is preferable to have 100 μm or more, preferably 100 to 300 μm.

[Equation 1]

18,770 < LMP < 20,000

(In Equation 1, LMP = T(logt _r + C), where T is the temperature of the molten plating solution (K), t _r is the immersion time (hr), and C is the constant 20.)

The post-treatment step (S60) includes an air cooling step (S61) of air cooling the structural carbon steel 10 that has undergone the plating step (S50) to 100° C. or less, and water cooling the structural carbon steel 10 that has undergone the air cooling step (S61). 20 to 50 in an aqueous solution of oxalic acid in which 0.5 to 10% by weight of oxalic acid is added to the structural carbon steel 10 that has undergone the water cooling step (S62) to remove residual heat and the water cooling step (S62) based on 100% by weight of water. The oxalic acid treatment step (S63) of immersion for 5 to 20 minutes under a temperature condition of °C, and pickling the structural carbon steel 10 that has undergone the oxalic acid treatment step (S63) to remove the molten flux powder attached to the plating surface, and to remove the molten flux powder attached to the plating surface A second pickling step (S64) to impart smoothness and gloss of have.

The air cooling step (S61) is a step of air cooling the structural carbon steel 10 that has undergone the plating step (S50), and the structural carbon steel 10 lifted from the aluminum molten metal through the plating step (S50) has a minimum temperature of 500 Since its mechanical properties are significantly changed according to a sudden change in temperature above ℃, it is sufficiently cooled in air until it is 100℃ or less in the air.

The water cooling step (S62) is a step of water cooling the carbon steel pipe that has undergone the air cooling step (S61), and the residual heat of the structural carbon steel 10 that has been subjected to the air cooling step (S61) is removed by water cooling to minimize thermal deformation. .

The oxalic acid treatment step (S63) is a step of selectively eluting the surface of the aluminum plating layer 30 formed on the structural carbon steel 10 that has undergone the water cooling step (S62), and the structural carbon steel 10 that has undergone the water cooling step (S62). ) is immersed in an aqueous solution of oxalic acid containing 0.5 to 10 wt% of oxalic acid (C ₂ H ₂ O ₄ ) based on 100 wt% of water under a temperature condition of 20 to 50 ° C. for 5 to 20 minutes to immerse the aluminum plating layer (30) The molten flux powder adhering to the surface of the molten flux powder is primarily removed and at the same time the surface of the aluminum plating layer 30 is selectively eluted.

The reason for limiting the amount of oxalic acid added to the aqueous oxalic acid solution to 0.5 to 10 wt% is that when the amount of oxalic acid added is less than 0.5 wt%, the surface elution of the aluminum plating layer hardly occurs, and when the amount of oxalic acid is more than 10 wt% This is because the aluminum plating layer 30 itself rapidly melts away.

In addition, the reason that the temperature of the oxalic acid aqueous solution is limited to 20 ~ 50 ℃ is that when the temperature of the oxalic acid aqueous solution is 20 ℃ or less, it takes a lot of time for the surface of the aluminum plating layer to selectively elute, and the temperature of the oxalic acid aqueous solution is 50 ℃ or more In this case, the time for selectively dissolving the surface of the aluminum plating layer 3 can be shortened, but the aluminum plating layer 30 itself rapidly melts.

When the surface of the aluminum plating layer 30 is selectively eluted in the oxalic acid treatment step (S63), the thickness of the aluminum oxide layer formed on the surface of the aluminum plating layer 30 while the surface of the aluminum plating layer 30 becomes porous It is possible to further enlarge, as described above, if the thickness of the aluminum oxide layer formed on the surface of the aluminum plating layer 30 is further increased, the hardness, corrosion resistance, abrasion resistance, etc. of the plating surface can be significantly improved.

Hereinafter, embodiments of the present invention will be described in detail. The following examples are provided for the understanding of the present invention, but are not limited thereto.

(Example)

After cleaning conventional structural carbon steel by alkali immersion, pickling, and water washing, a water-soluble flux consisting of 40 wt% of potassium chloride, 10 wt% of cryolite, 50 wt% of ammonium fluoride or aluminum fluoride is used based on 100 wt% of water The flux treatment was carried out by immersing it in a flux solvent added in an amount of 20 wt% under a temperature condition of about 70° C. for about 5 minutes.

Thereafter, a molten flux consisting of 30% by weight of sodium chloride, 20% by weight of potassium chloride, 25% by weight of cryolite, 30% by weight of a fluoride selected from ammonium hydrofluoric acid, ammonium fluoride, or aluminum fluoride is mixed with 100% by weight of molten aluminum. It was added in an amount of 10% by weight as a reference, and was immersed in a hot-dip plating solution to satisfy Equation 1 above for plating.

The plated carbon steel was air-cooled and water-cooled, and then immersed in an oxalic acid aqueous solution containing 0.5 to 10 wt% of oxalic acid based on 100 wt% of water under a temperature condition of 30°C for 100 minutes, and the surface was pickled and washed with water. After drying, the aluminum steel material for the final floating solar power generation facility was manufactured.

Figure 4 is an optical micrograph showing a cross section of the aluminum steel for floating solar power generation facility manufactured in the above embodiment. As shown in FIG. 4 , it can be seen that the aluminum plating layer 30 has a thickness of about 35 to 45 μm, and crystal grains are formed in a size range of 10 to 20 μm.

In addition, the corrosion resistance evaluation of the aluminum steel for floating photovoltaic power generation facilities manufactured as described above was performed in accordance with the NACE TM 0112 Test to Determine the Potential Corrosion Effects of Ballast Water Treatment Systems on Ballast Tanks standard. The immersion corrosion test was conducted according to ASTM G 31 Standard practice for laboratory immersion corrosion testing of metals, and the temperature of the test solution was kept constant at 35°C for 6 months using a constant temperature water bath. The vapor test was performed by exposing the same to the atmospheric environment (Humid Atmosphere) in a constant temperature water bath containing the test solution. The result of treated water by such treated water was marked with "○" when the weight loss per unit area after 6 months was 1 to 10 mg/cm2, and "△" when 10 to 20 mg/cm2. , was indicated as "X" if it was greater than 20 mg/cm2. In addition, the corrosion resistance (Vapor) result by steam treatment was marked with "○" when the weight loss per unit area after 6 months was 0.1 to 1.0 mg/cm2, and "△" when it was 1.0 to 2.0 mg/cm2. , was expressed as "X" when it was greater than 2.0 mg/cm2.

In addition, after the corrosion resistance evaluation, the presence or absence of internal pinholes in the aluminum steel for floating photovoltaic power generation facilities was confirmed through an optical microscope.

The corrosion resistance evaluation and pinhole generation results are listed in Table 1 below.

LMP grain size (㎛) Treated water Corrosion resistance (Vapor) Pinhole Occurrence Comparative Example 1 18,500 5 X X ○ Comparative Example 2 20,100 120 X △ ○ Invention Example 1 18,800 13 ○ ○ X Invention Example 2 19,300 56 ○ ○ X Invention example 3 19,900 91 ○ ○ X

In this way, the present invention can prevent the problem of damage to solar tube power generation facilities that cannot have the characteristics of a conventional iron material made of wood or plastic, and a plate or structure made of some metal material is damaged by wind, waves, typhoon, and salt damage. It is possible to prevent the problem of being easily damaged and corroded by the marine environment such as ultraviolet rays.

In addition, the present invention includes a floating photovoltaic device using the aluminum steel for the above-described floating photovoltaic equipment.

5 is a perspective view of a floating photovoltaic device according to the present invention, FIG. 6 is a view for explaining the coupling relationship between the support structure 200 and the floating structure 300 shown in FIG. 5 is a plan view of the floating photovoltaic device shown in FIG. 5, FIG. 8 is a front view of the floating photovoltaic device shown in FIG. 5, and FIG. 9 is a right side view of the floating photovoltaic device shown in FIG. .

5 to 9 , a floating photovoltaic power generation device according to an embodiment of the present invention includes a photovoltaic module 100 that receives sunlight and converts it into electricity, and a support structure for supporting the photovoltaic module. (200) and a floating structure 300 that can be combined with the support structure 200 to install the solar module 100 on the water. At this time, in order to prevent corrosion of the structure by seawater, it is characterized in that the aluminum steel material for the floating solar power generation facility is mounted.

The solar module 100 is inclinedly installed on the upper portion of the support structure 200 , and serves to convert sunlight into electrical energy.

The support structure 200 is installed under the photovoltaic module 100 and serves to support the photovoltaic module 100 .

In addition, the support structure 200 may be made of aluminum steel for floating solar power generation facilities. That is, the surface of the support structure 200 may be plated with molten aluminum to prevent corrosion by seawater or freshwater.

The floating structure 300 is installed on both lower sides of the support structure 200 , respectively, and floats on the water surface. In this case, the floating structure 300 may be formed of a rectangular parallelepiped-shaped foamed urethane, or may be made of aluminum steel for a floating solar power generation facility.

On the other hand, in the floating photovoltaic device according to an embodiment of the present invention, the support structure 200 includes a horizontal frame 210, a reinforcing bar 220, a first vertical frame 230 and a second vertical frame ( 240) may be included.

The horizontal frame 210 is provided on both lower sides of the support structure 200 , respectively. Specifically, the horizontal frame 210 is in the shape of a circular pipe bent twice in a U-shape, and one end and the other end of the horizontal frame 210 are horizontal frames 210 disposed at the rear of the horizontal frame 210 . It may be welded to one end and the other end of each.

A plurality of reinforcing bars 220 are installed inside the horizontal frame 210 to reinforce the horizontal frame 210 . Specifically, one end and the other end of the reinforcing bar 220 are welded to the inside of the horizontal frame 210 and to the inside of the horizontal frame 210 welded to the rear of the horizontal frame 210 , respectively. In this case, the reinforcing bar 220 may be formed in the shape of a circular pipe having a predetermined length.

The first vertical frame 230 is installed in a vertical direction on one side of the reinforcing bar 220 , and the second vertical frame 240 is installed in a vertical direction at the other side of the reinforcing bar 220 . Specifically, the lower ends of the first vertical frame 230 and the second vertical frame 240 may be welded to one side and the other side of the reinforcing bar 220 , respectively.

The first vertical frame 230 and the second vertical frame 240 may have a circular pipe shape, and the length of the first vertical frame 230 may be shorter than the length of the second vertical frame 240 .

On the other hand, the upper portions of the first vertical frame 230 and the second vertical frame 240 are each cut to be inclined at a predetermined angle, and the first vertical frame 230 and the second vertical frame 240 have a solar module on the upper portion. 300 may be installed.

In addition, the floating photovoltaic device according to an embodiment of the present invention includes a mooring line 400 installed in a plurality of the horizontal frame 210 to prevent the floating structure 300 from moving arbitrarily, and the lower end of the horizontal frame 210 . It may further include a weight 410 that is installed on the mooring line 400 and connected to. In this case, the mooring line 400 may be installed in the center of the outer side of the horizontal frame 210 to surround the outside of the horizontal frame 210 .

The above description is merely illustrative of the technical idea of the present invention, and various modifications, changes and substitutions are possible within the scope that does not depart from the essential characteristics of the present invention by those of ordinary skill in the art to which the present invention pertains. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are intended to explain, not to limit the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments and the accompanying drawings. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

10: structural carbon steel 20: aluminum plating diffusion layer
30: aluminum plating layer
100: solar module 200: support structure
210: horizontal frame 220: reinforcing bar
230: first vertical frame 240: second vertical frame
300: floating structure 400: mooring line
410: weight
S10: casting step S20: degreasing step
S30: surface treatment step S40: flux treatment step
S50: plating step S60: post-processing step

Claims (6)

In the aluminum steel for floating solar power generation facilities,
structural carbon steel (10);
A base material structure formed by degreasing the surface of the cast structural carbon steel 10, washing with water and pickling, and flux treatment; and a composite structure formed by infiltrating molten aluminum (Al) into the base material structure. 20); and
and an aluminum plating layer 30 formed on the aluminum plating diffusion layer 20 and in contact with seawater;
In order to prevent corrosion by seawater and damage by waves, the aluminum plating diffusion layer 20 is aluminum steel for floating photovoltaic facilities, characterized in that the molten aluminum (Al) penetrates to a depth of 100 μm or more.
The method of claim 1,
The diameter of the crystal grains of the aluminum plating layer 30 is 10 to 100 ㎛, characterized in that, aluminum steel for floating photovoltaic equipment.
The method of claim 1,
The complex tissue is
FeAl ₃ + Fe ₂ Al ₃ Aluminum steel for floating solar power generation facilities, characterized in that consisting of an intermetallic compound.
a solar module 100 for receiving sunlight and converting it into electricity; a support structure 200 for supporting the solar module; and a floating structure 300 that can be combined with the support structure 200 to install the solar module 100 on water;
A floating photovoltaic device, characterized in that the aluminum steel for a floating photovoltaic power generation facility according to any one of claims 1 to 3 is mounted in order to prevent corrosion of the structure by seawater.
5. The method of claim 4,
The support structure 200 is
Horizontal frames 210 respectively provided on both lower sides of the support structure 200;
a plurality of reinforcing bars 220 installed inside the horizontal frame 210 to reinforce the horizontal frame 210;
a first vertical frame 230 installed on one side of the reinforcing bar 220 to support the solar module 300; and
Floating photovoltaic device comprising a; a second vertical frame (240) installed on the other side of the reinforcing bar (220) to support the photovoltaic module (300).
6. The method of claim 5,
The horizontal frame 210 is
It is the shape of a round pipe bent twice in the shape of a U,
One end and the other end of the horizontal frame 210 are
Floating photovoltaic power generation device, characterized in that each welded to one end and the other end of the horizontal frame (210) disposed at the rear of the horizontal frame (210).

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