KR101351481B1 - Device of electricity anticorrosion - Google Patents

Abstract

The present invention discloses an electrical anticorrosion apparatus for corrosion protection of a surface of a to-be-protected body such as a steel structure or the like exposed in seawater. The electric corrosion protection device according to the present invention is an electric corrosion protection device for preventing corrosion of an object to be exposed in seawater, comprising: a power supply unit for applying an corrosion protection current to the object, a positive terminal of the power supply unit; And a cathode portion electrically connected to an anode portion electrically connected to a cathode terminal of the power supply portion, and having a mesh portion attached to a surface of the object, wherein both the anode portion and the cathode portion are installed in seawater. It is characterized by. According to the present invention, by using the object itself as a cathode, salt components in seawater precipitate on the surface of the object to form an electrodeposition, thereby acting as a film, thereby preventing over-eating, excellent durability and semi-permanent Can provide the effect of the scheme.

Corrosion method, corrosion method, electrodeposition technology, electrodeposition method, steel structure, reinforcement of structure

Description

Electric anticorrosive device {DEVICE OF ELECTRICITY ANTICORROSION}

The present invention relates to an electric anticorrosive device, and more particularly, by using the object itself as a cathode, salt components in seawater are deposited on the surface of the object to form an electrodeposition, thereby acting as a coating. The present invention relates to an electrical anticorrosion device that is prevented, durable, and can provide a semipermanent effect.

Generally, when metallic structures are located in water or in the ground, corrosion occurs due to chemical action of a corrosive substance such as gas or liquid which can act mainly as an electrolyte. In order to prevent such a metallic structure from being corroded Anticorrosion is called prevention.

Corrosion is defined as a phenomenon in which metal is consumed by chemical reactions from the outside, which is largely divided into wet and dry. Corrosion has the property of occurring continuously. Corrosion is roughly divided into wet when it comes into contact with the liquid phase and dry when it is relatively hot only with the gas phase. For example, it is wet that iron is rusted at room temperature, and it is dry that various metals are consumed in a high temperature halogen gas.

What is commonly seen in the surroundings is wet, but the mechanism is explained by the form of local battery. That is, even if the surface of the same metal is microscopically physically and chemically different in the state of each part, their electrode potentials are all different. Therefore, the part with low potential (electron-rich part) dissolves by giving electrons to the part with high potential (small part of electrons), and the electrons reaching the high part reduce ions diffused or moved from the solution in this part. It is consumed, and as this movement is repeated, corrosion progresses. Corrosion can also be classified into frontal corrosion where the metal surface is evenly corroded and local corrosion where only a limited part is corroded.

Particularly, there are many examples of local corrosion, and the representative ones are the corrosion protection of the intergranular corrosion and the metal surface where corrosion progresses according to the grain boundaries of the metal crystals found in stainless steel or duralumin. 홀) Sliding corrosion caused by the microscopic movement of the point and the contact between the metal and the metal where pinholes are formed and the corrosion received therein rapidly progresses inside. Etc. can be mentioned. Sliding corrosion is considered to be that the coating on the metal surface is destroyed by sliding, and debris of the metal or metal oxide is sandwiched between the metals and simultaneously oxidized. On the other hand, corrosion in the atmosphere and metal dissolution in acid solution are examples of total corrosion.

Among the corrosions described above, the corrosion of the metal buried in the water or the ground is mainly due to the mechanism of the local battery, and when the metal structure is corroded by the electrochemical reaction, the structure is As well as erosion and wear, there is a problem that the smooth mechanical operation of the structure is degraded and the power is lost, preventing the metal structure from corrosion is called a method, the structure required a method is called a body.

The type of the coating method includes a coating method and an electrical method, and the coating method includes coating, inorganic lining, organic lining, metal spraying, petrolatum lining, and metal surface treatment on the surface of a metal structure which is a to-be-protected body. By means of various means it is possible to cut off the supply of liquids and / or gases, mainly water and oxygen, which can function as electrolytes. The electrical method is a metal-type to-be-corrugated body such that the potential of the cathode portion having a high potential is gradually lowered so that the potential of the cathode and anode portions is the same, that is, the corrosion current on the surface of the object is extinguished to stop corrosion. Means the way of introducing current into the sieve.

In the case of the coating method, the method itself may not be possible depending on the surrounding environment of the object to be coated, and it is difficult to paint even a minute portion of the object to obtain an anticorrosive effect on the entire object. In addition, in the case of the coating method, a high cost is required for painting, plating, and the like.

On the other hand, in the case of the electric system, since the anticorrosive current may flow into the environment where the coating cannot be coated or to the minute portion of the object to be coated, it is possible not only to obtain an anticorrosive effect on the entire object to be coated, but also to be cheaper than the coating method. The advantage is that it can be done at a cost.

On the other hand, the electric method can be divided into a dielectric anode method and an external power supply method according to the method of introducing the system current.

The dielectric anode method is a method using a galvanic corrosion phenomenon caused by the potential difference between dissimilar metals, a structure that requires a method, that is, the metal to be a cathode, the ionization tendency and lower potential than the metal It is connected to form a positive electrode, and means a method of flowing a method current to the object as the metal ions are eluted from the metal of the positive electrode having a relatively high reactivity by the battery reaction between the connected dissimilar metals. At this time, the metal of the positive electrode is sacrificially consumed instead of the body to be completely stopped corrosion of the body.

However, in the case of the method of the object through the above-described dielectric anode method, the method proceeds only until the anode is completely consumed, so there is no worry of over-type, but the trouble of having to exchange the anode after a proper time has elapsed. have. In addition, the dielectric anode method has a disadvantage in that it is uneconomical in a high soil resistivity, the effective potential and the anode current is limited, it is difficult to apply to a large object.

The external power supply method refers to a method in which an anode is installed in a structure requiring a method, that is, seawater and soil in which the object is placed, and an artificial current flows from the outside. At this time, if a positive current of a DC power supplied from the outside is connected to the positive electrode and a negative electrode is connected to the to-be-tested object, then a DC current is passed through the rectifier. Is generated, and the to-be-processed object becomes a cathode and corrosion does not proceed. The external power method is not only applicable to a high soil resistivity, but also easy to control the anode current, so that it is suitable to be applied to a large corroded body, which can compensate for the disadvantages of the dielectric anode method.

However, in the case of using the external power method as described above, the anode is not completely consumed, but rather acts as a semi-permanent component for flowing the corrosion current to the to-be-object. There is a fear that the periodic maintenance for the positive electrode is required.

In particular, in recent years, as the development of the industry caused a lot of contaminants and the seawater around the port became increasingly seriously polluted, the specific resistance of the seawater, the pH was changed, the life of the anode, the anticorrosive current density, etc. Therefore, the criteria set initially are not suitable for the current seawater condition, and as a result, the cost of long-term maintenance is increasing.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art as described above, and an object thereof is to use salt as a cathode to deposit salt components in the surface of the water to form electrodeposits. It is to provide an electrical anticorrosive device that can prevent the over-corrosion, excellent durability, and provide a semi-permanent effect by acting as a film.

An electrical corrosion protection device according to the present invention for achieving the above object, an electrical corrosion protection device for preventing corrosion of the object, a power supply for applying a corrosion protection current to the object; A positive electrode unit electrically connected to the positive terminal of the power supply unit; And a cathode portion electrically connected to the cathode terminal of the power supply unit and having a mesh portion attached to a surface of the object to be coated.

The object is installed to be exposed in the sea water, in this case, both the anode portion and the cathode portion may be installed to expose in the sea water.

The power supply unit includes a commercial power supply unit for supplying power to the object to be processed and a rectifying unit converting the power supplied from the commercial power supply unit into direct current.

The cathode portion of the mesh portion may be made of the same material, in particular a steel material.

The anode portion includes a body connected to the anode terminal of the power supply portion and a wire provided on a surface of the body.

The body and the wire of the anode part may be made of a conductive material, in particular, waste iron.

The potential difference applied between the anode portion and the cathode portion is in the range of 3 to 6V.

After the high strength electrodeposition material having excellent adhesion on the surface of the to-be-contained body is precipitated, a larger amount of current is supplied to the to-be-contained body than before the electrodeposited material is deposited, thereby forming a new electrodeposition on the deposited electrodeposited body. It further comprises a feed control means for depositing the.

The amount of current supplied to the object is within the range of 0.1 to 0.7 mA / cm 2.

The present invention provides an electrical corrosion prevention apparatus for preventing corrosion of the object by introducing an anticorrosive current into the object, such that the cathode portion of the electrical corrosion apparatus includes a mesh portion attached to the surface of the object to be coated. By doing so, it is possible to increase the surface area of the to-be-formed object, and through this, the present invention can allow the deposition of a high-strength electrode having excellent adhesion to the surface of the to-be-formed object.

Therefore, the present invention can prevent corrosion of the electrodeposited body even if the corrosion resistance current flowing into the object after stopping the high-strength electrodeposited material having excellent adhesion on the surface of the object is prevented. In this way, the present invention can prevent the object to be over-etched by stopping the inflow of the anti-corrosive current after the electrodeposition is precipitated.

In addition, the present invention can increase the surface area of the anode portion by configuring the anode portion of the electrical method device made of a steel material and a steel wire provided on the surface of the body, through which, the present invention It is possible to quickly deposit a large amount of electrodeposition on the surface of the anticorrosive.

In addition, the electrocorrosive device of the present invention is disposed in the seawater, the anode portion and the cathode portion, the environmentally friendly electrodeposited substance containing the dissolved components in the seawater on the surface of the to-be-deposited body, and thus, The present invention is excellent in the adhesion between the electrodeposited material and the seaweed can be obtained more excellent anticorrosive effect when applied to the fish.

The present invention is a device for the corrosion of the surface of the object to be required, such as a steel structure exposed in sea water, the salt component in the sea water by using the object itself as a cathode surface of the object The present invention provides an electric anticorrosive device which is prevented from overeating, has excellent durability, and can provide semipermanent effect by being deposited on and forming electrodeposits to act as a film.

According to an aspect of the present invention, there is provided an electrical system including a power supply unit for applying an anticorrosion current to the object, a positive electrode unit electrically connected to a positive terminal of the power supply unit, and a negative electrode unit electrically connected to a negative terminal of the power supply unit. It is made to include. The electrodeposition material is formed by containing salts of magnesium or calcium such as calcium carbonate (CaCO ₃ ), including magnesium hydroxide (Mg (OH ₂ )) in seawater having excellent initial adhesion in the electric method, and they are present in abundance in seawater. Therefore, it can be said to be particularly advantageous for the electric system in seawater. When the electrodeposition material preferably has a thickness of about several micrometers to several hundred micrometers, the electrodeposition may be sufficient for the method of the object to be used and thus may not require any further electrodeposition or electrical method, thereby stopping supply of current. The effect of the semi-permanent method can also be obtained.

Here, the negative electrode portion of the electrical corrosion protection device provided in the present invention has a mesh portion attached to the surface of the object to be increased so that the surface area of the object to be improved, according to the present invention, the adhesive force to the surface of the object This excellent high strength electrodeposition can be precipitated. Therefore, in the present invention, even if the corrosion current flowing into the object after stopping the electrodeposited material is prevented, the corrosion of the object is prevented by the high-strength electrodeposited material having excellent adhesive strength. After the precipitation, the inflow of the anticorrosive current can be prevented, thereby preventing the object to be overcorroded.

In addition, the anode portion of the electrical system provided in the present invention comprises an anode body electrically connected to the anode terminal of the power supply portion and a wire provided on the surface of the body. Accordingly, in the present invention, the surface area of the anode portion is increased. It is possible to quickly deposit a large amount of electrodeposition on the surface of the object to be processed.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention.

1 to 3 are cross-sectional views for describing the electric corrosion prevention apparatus according to an embodiment of the present invention.

As shown in FIG. 1, the electrical corrosion protection device according to the embodiment of the present invention is an electrical corrosion protection device for preventing corrosion of the corrosion protection object 310 exposed in the seawater 10, and the corrosion protection object 310 A power supply unit 100 for applying a method current to the anode, an anode unit 200 electrically connected to the anode terminal 120 of the power supply unit 100, and an anode terminal 130 of the power supply unit 100. And a cathode part 300 having a mesh part 320 attached to the surface of the object 310. Here, both the anode portion 200 and the cathode portion 300 of the electrical system is installed in the sea water (10).

The power supply unit 100 is a commercial power supply unit 110 for supplying power to the object 310, and converts the power supplied from the commercial power supply unit 110 to a direct current and the positive terminal 120 is separated from each other It includes a rectifier 150 having a negative terminal (130). That is, the power supplied from the commercial power supply unit 110 in the manner of electrostatic potential, constant current, circulating flow, etc. is converted into a direct current form in the rectifying unit 150 so that a method current is applied to the object 310. .

As shown in FIG. 2, the cathode part 300 is electrically connected to the cathode terminal 130 of the rectifying part 150 through the cathode ray 132. In addition, in the cathode part 300, the object 310 becomes a cathode, and the object 310 includes, for example, a steel structure. The steel structure refers to a structure in which the joint parts of the building material such as columns and beams are completely and completely joined together, and examples thereof include reinforced concrete structures. The cathode part 300 includes a mesh part 320 attached to the surface of the object 310. The mesh unit 320 is made of the same material as the body 310, for example, steel. Here, the cathode part 300 may increase the surface area of the to-be-converted object 310 by having the steel mesh part 320 provided on the surface of the to-be-converted object 310. Through this, the current density per unit area flowing on the surface of the object 310 is reduced, so that the high-strength electrodeposition material 330 having excellent adhesion at the initial stage of the electrical system may be precipitated.

As shown in FIG. 3, the anode part 200 is electrically connected to the anode terminal 120 and the anode line 122 of the rectifying part 150 and is made of a conductive material, for example, waste iron. The anode part 200 is connected to the anode terminal 120 of the rectifying part 150 and has a structure including a main body 210 having a rod shape and a wire 220 provided on a surface of the main body 210. Have Here, the anode part 200 may increase the surface area of the anode part 200 as the wire 220 is provided on the surface of the main body 210. 310, a large amount of electrodeposited material 330 may be quickly deposited on the surface.

Referring to FIG. 1 again, an electric method using the electric method according to the present invention will be described.

First, an anode portion 200 having a wire 220 on the surface of the main body 210 and electrically connected to the anode terminal 120 of the power supply unit 100 is provided. The anode portion 200 is provided in the seawater 10, for example. The cathode terminal 130 of the power supply unit 100 is electrically connected to the cathode unit 300 installed in the seawater 10 and spaced apart from the anode unit 200. The cathode part 300 includes a mesh part 320 attached to a surface of the to-be-obtained object 310 as a cathode of the to-be-obtained object 310 requiring a method.

At this time, the distance (d) between the anode portion 200 and the cathode portion 300 is inversely proportional to the current density in consideration of the formation of a sufficient electrodeposition on the surface of the object 310 including the mesh portion 320 It can be set freely within the distance that can be achieved.

Then, when power is supplied to the commercial power supply unit 110 of the power supply unit 100, the power supplied to the commercial power supply unit 110 is converted into a direct current form in the rectifier 150 of the power supply unit 100, The DC current converted in this way flows and a method current is applied from the anode part 200 to the to-be-tested object 310. At this time, when the power supplied from the commercial power supply unit 110 is a potential potential, it is preferable that the potential difference applied to the positive electrode 200 and the negative electrode 300 is about 3 to 6V. If the potential difference is less than 3V, there may be a problem that the additional formation of the electrodeposition is not enough, on the contrary, if the potential difference exceeds 6V, too high voltage is applied without significantly affecting the electrodeposition amount of the electrodeposited additionally. This is because there may be a problem that is also undesirable.

As a result, salt components in the seawater 10 are deposited on the surface of the to-be-processed object 310 of the cathode part 300, and thus electrodeposition material containing magnesium hydroxide or the like is formed on the surface of the to-be-treated object 310. 330 is precipitated. Here, the negative electrode portion 300 of the electric corrosion protection device provided in the present invention is provided with a mesh portion 320 of the same material, in particular steel material on the surface of the object 310, the object 310 Accordingly, the surface area of the object 310 is increased, and thus, the current density per unit area flowing on the surface of the object 310 is reduced, so that the high-density electrodeposition material 330 having excellent adhesive strength at the initial stage of the electric system is excellent. Can be precipitated.

Therefore, in the present invention, it is possible to stop the supply of the anticorrosive current after the high-strength electrodeposited material 330 having excellent adhesion on the surface of the to-be-processed object 310 is deposited, and thereafter, the electrodeposited material 330 ) Can act as a coating to prevent corrosion of the to-be-protected body 310 can be prevented from being over-etched.

Meanwhile, as another embodiment of the present invention, after the high strength electrodeposition material 330 having excellent adhesion on the surface of the object 310 is deposited, the electrodeposition material 330 has a larger size than before it is deposited. A current, for example, about 0.1 to 0.7 mA / cm 2 may be supplied to the object 310 to deposit new electrodeposited material on the deposited electrodeposition 330. Therefore, in the present invention, after the electrodeposited material 330 is deposited by depositing a new electrodeposited material using the high-strength electrodeposited material 330 deposited on the surface of the to-be-processed object 310, the anode part 200 may be formed. Since there is no need for maintenance, the maintenance of the anode part 200 is not required. Here, when the amount of the supplied current is less than 0.1mA / ㎠ may have a problem that the deposition of a new electrodeposition is not enough, on the contrary, if the amount of the current exceeds 0.7mA / ㎠ the electrodeposition is further precipitated There may be a problem that power is wasted without noticeable improvement in the amount of power.

The feeding control means may deposit the electrodeposited material by supplying a current having a larger magnitude than before the electrodeposited material is deposited after the high strength electrodeposition material having excellent adhesion on the surface of the object is deposited. In order to deposit a new electrodeposition on the phase, the power supply control means may be configured to include a conventional electroconductor and a switch. That is, after measuring the thickness of the electrodeposition deposited on the surface of the object by the use of the electroconductivity, the current of a larger size to enable a new electrodeposition in proportion to the thickness of the electrodeposited by using the switch Can be authorized. In addition, after a certain time of energization using a timer instead of using the electroconductor, the supply of current to the negative electrode is disconnected, and when the precipitation of a new electrodeposition is required again, the use of the switch is used again. The current can be reapplied. Such manipulation may be performed manually after observing the degree of electrodeposition of the naked eye, but may be automatically performed by a conventional control means such as a computer through comparative analysis of accumulated data of the past. Will be understood by those skilled in the art.

As described above, the present invention provides an electric anticorrosive device for preventing corrosion of the object 310 exposed in the seawater 10, the electric anticorrosive device on the surface of the object 310 And a cathode portion 300 having a mesh portion 320 attached thereto and an anode portion 200 having a wire 220 on a surface of the anode body 210, wherein the anode portion 200 is formed. ) And the cathode portion 300 are installed to expose in the sea water (10).

According to the present invention, the surface area of the object 310 can be increased through the mesh part 320 provided in the cathode part 300, and through this, high strength having excellent adhesion to the surface of the object 310 is provided. Electrodeposition 330 may be precipitated. Thus, in the present invention, even after the electrodeposition material 330 is deposited on the surface of the object 310, the electrodeposition material 330 acts as a film even after the supply of the anticorrosive current is stopped. Since corrosion of the can be prevented, it is possible to prevent the to-be-etched object 310 is over-etched.

In addition, the present invention can increase the surface area of the anode portion 200 through the wire 220 provided in the anode portion 200, through which a large amount of the surface of the object 310 The electrodeposition 330 may be precipitated quickly. Thus, the present invention has the advantage that it is possible to deposit a new electrodeposition using the electrodeposition 330, the maintenance of the anode portion 200 is not necessary after the deposition of the electrodeposition 330.

In addition, the present invention, the to-be-protected body 310, the negative electrode portion 300 and the positive electrode portion 200 in the above-described anticorrosive device are all installed in the sea water 10, the surface on the surface of the object 310 The environmentally friendly electrodeposition material 330 containing dissolved components in the seawater 10 may be precipitated. Accordingly, the present invention is excellent in adhesion between the electrodeposition material 330 and seaweeds, and thus is applied to fish ponds and the like. In this case, a better anticorrosive effect can be obtained.

As mentioned above, although the present invention has been illustrated and described with reference to specific embodiments, the present invention is not limited thereto, and the following claims are not limited to the scope of the present invention without departing from the spirit and scope of the present invention. It can be easily understood by those skilled in the art that can be modified and modified.

1 is a cross-sectional view for explaining an electric anticorrosion apparatus according to an embodiment of the present invention.

Figure 2 is a cross-sectional view for explaining the cathode portion of the electrical system according to an embodiment of the present invention.

Figure 3 is a cross-sectional view for explaining the anode portion of the electrical system according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: sea water 100: power supply

110: commercial power supply unit 120: positive terminal

122: positive electrode 130: negative electrode terminal

132: cathode ray 150: rectifier

200: anode 210: main body

220: wire 300: cathode

310: to-be-processed object 320: mesh part

330: electrodeposition

Claims (11)

An electrical anticorrosion device for preventing corrosion of the object, A power supply for applying anticorrosive current to the object; An anode part electrically connected to the positive terminal of the power supply part, the anode part including a main body connected to the positive terminal of the power supply part and a wire provided on a surface of the main body; And A negative electrode portion electrically connected to the negative terminal of the power supply unit, the negative electrode portion being attached on the surface of the object to be coated and having a mesh part made of the same material as the object to be coated; Electric anticorrosion device characterized in that it comprises a. The method of claim 1, And the anode is exposed in seawater, and the anode and cathode portions are both exposed in seawater. The method of claim 1, The power supply unit is characterized in that it comprises a commercial power supply for supplying power to the object and the rectifier for converting the power supplied from the commercial power supply to direct current. delete The method of claim 1, The negative electrode of the mesh portion of the electric anti-corrosion device, characterized in that made of steel. delete The method of claim 1, The main body and the wire of the anode portion is characterized in that the electrically conductive device made of a conductive material. The method of claim 7, wherein The main body and the wire of the anode portion is characterized in that made of waste iron. The method of claim 1, The electric potential device applied between the anode portion and the cathode portion is characterized in that the range of 3 to 6V. The method of claim 1, After the high strength electrodeposition material having excellent adhesion on the surface of the to-be-contained body is precipitated, a larger amount of current is supplied to the to-be-contained body than before the electrodeposited material is deposited, thereby forming a new electrodeposition on the deposited electrodeposited body. An electric system characterized in that it further comprises a feed control means for depositing. 11. The method of claim 10, The amount of current supplied to the object to be corroded, characterized in that in the range of 0.1 to 0.7mA / ㎠.

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