KR101524034B1 - Anti-rusting solution, apparatus and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a rust preventive composition, a rust preventive liquid producing device, and a rust preventive composition method, wherein the rust preventive composition comprises water mixed at a weight ratio of 1: 2 to 1: 3 to rust preventive and rust preventive, And the welding defect prevention capability is excellent. The rust preventive composition of the present invention is capable of variably controlling the weight ratio of water to the rust preventive agent according to at least one of the predetermined reference hourly hourly precipitation level and the inclination angle of the coated surface of the workpiece to be coated with the rust preventive composition, It is kept constant without being influenced by the change of the rainfall condition of the wet season and the dry season or the inclination angle of the application surface.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a rust preventive composition,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rust preventive composition, a rust preventive solution producing device and a rust preventive composition method.

Steel materials such as sections are used as reinforcement materials or main structures of steel structures. The steel material is likely to be rusted on cutting surfaces due to various rainwater or contaminants due to exposure to the outside during transportation or during installation at a pre-installation temperature. Therefore, before the steel material is installed on the structure, additional work is required to remove the rust generated on the cutting surface (welding improvement surface) of the steel material by using the electric grinder. Therefore, Environmental pollution is caused, and the efficiency of the work is lowered.

In order to prevent corrosion of steel, it is possible to consider applying tapes to the steel, but space is formed at the angles of the steel material such as sections, water enters the generated space, and rust is generated. There are difficulties. Therefore, the method of attaching the tape to the steel material is not applied in actual field.

As a conventional anti-foaming technique, a method of forming a coating film by applying an anti-corrosive coating material to a cut surface of a steel material is used. However, if the coating film of the anticorrosive paint is formed to have a certain thickness or more in order to improve the rust-preventive performance, welding defect is caused by the anticorrosive coating film when the steel material is welded, which causes difficulty in the welding work. On the contrary, when the coating thickness of the anti-corrosive coating material is made thin so as not to hinder the welding work, the anti-foaming effect is deteriorated, and it is difficult for the skilled worker to uniformly form the coating film with a small thickness. Further, it is difficult to visually confirm the thickness of the coating film, and even if the thickness of the coating film is measured by using a coating film measuring device, it is practically impossible to confirm the thickness with respect to all coating film areas.

As a result, since it is difficult to confirm the portion where the coating film is thick before welding, there is a high possibility that weld defect occurs. To prevent welding defects, additional work must be performed to remove the coating of rust-preventive paint temporarily applied to the steel prior to welding, just prior to welding. Due to these problems, paint-type rustproofing products have not been applied in actual field.

On the other hand, in the rainy season when rainfall frequency is high, the rainfall phenomenon is more rapidly spread over a wider area than in the dry weather where the rainfall frequency is relatively low. Therefore, even in the case of the same rust-preventive mixture, the period of corrosion during the wet season is shorter than that during the dry season, and the welding time of the steel is also limited. The worker must manage the welding work schedule of steel in consideration of the period of anticorrosion, but it is easy to cause confusion in managing the work schedule because it is different in the rainy season and dry season. Another problem is that, even if the same rust-preventive mixture is formed on the same steel, the rusting performance varies depending on the inclination angle of the coated film surface to which the rust-preventive liquid is applied and the rust-preventive period is also changed. .

An object of the present invention is to provide a rust preventive composition, a rust preventive solution producing device, and a rust preventive solution forming method excellent in rust resistance and welding defect prevention capability.

Another object to be solved by the present invention is to provide a rust preventive composition, a rust preventive liquid producing device, and a rust preventive composition having constant rusting resistance and welding defect preventing ability irrespective of rainfall frequency such as rainy season or dry season or irregular angle of a coated surface to which rust- And to provide a method.

Another problem to be solved by the present invention is to confirm the coating film thickness of the rustproofing liquid visually and to secure the rustproofing ability and the weld-bonding preventing ability at a certain level or more, and to prevent the rust- A liquid composition, an apparatus for producing a rust preventive liquid, and a rust preventive composition method.

The problems to be solved by the present invention are not limited to the above-mentioned problems. Other technical subjects not mentioned will be apparent to those skilled in the art from the description below.

According to an aspect of the present invention, there is provided an antirust agent, And water mixed at a weight ratio of 1: 2 to 1: 3 with respect to the rust preventive agent.

In one embodiment of the present invention, the rust preventive composition further comprises an organic pigment mixed at a weight ratio of 1: 0.0005 to 1: 0.002 to the rust inhibitor.

In one embodiment of the present invention, the water is mixed so as to have a variable weight ratio to the rust inhibitor according to a predetermined reference time-per-hour rainfall level.

In one embodiment of the present invention, the water is mixed with the rust inhibitor at a weight ratio determined according to the following equation (1).

[Equation 1]

Wherein w represents the weight ratio of the water to be mixed with the rust inhibitor, R (t) represents the rainfall level per the reference hour, a represents a predetermined minimum value of the rainfall level per the reference time, L is a value set at 2 or more and represents a minimum value of the weight ratio of the water to be mixed with the rust inhibitor, M is a value which is set to a value of 3 or less but greater than L, Represents the maximum value of the weight ratio of the water mixed with the rust inhibitor.

In one embodiment of the present invention, the water is mixed so as to have a variable weight ratio with respect to the rust inhibitor according to the inclination angle of the coated surface of the member to be welded to which the rust preventive composition is applied.

In one embodiment of the present invention, the water is mixed with the rust inhibitor at a weight ratio determined according to the following formula (2).

[Equation 2]

Wherein A represents the inclination angle of the coated surface of the member to be welded, A (θ) represents a function value which changes in accordance with the inclination angle, c represents a predetermined minimum value of the function value, d represents a preset maximum value of the function value, L represents a minimum value of the weight ratio of the water mixed with the rust inhibitor, Is a value set to a value of not more than 3 but larger than L and represents the maximum value of the weight ratio of the water to be mixed with the rust inhibitor.

In one embodiment of the present invention, the water is mixed so as to have a variable weight ratio with respect to the rust inhibitor according to a predetermined reference time-of-hour rainfall level and an angle of inclination of a coated surface of the member to be welded to which the rust preventive composition is applied, Is mixed with the rust inhibitor at a weight ratio determined according to the following formula (3).

[Equation 3]

(T) denotes a rainfall level per the reference time, a denotes a predetermined minimum value of the rainfall level per the reference time, and b denotes a reference value of the reference L is a value set at 2 or more and represents a minimum value of the weight ratio of the water to be mixed with the rust inhibitor, M is a value which is set to a value of 3 or less but greater than L, Wherein A represents a maximum value of the weight of the water mixed with the rust inhibitor,? Represents a tilt angle of the coated surface of the member to be welded, A (?) Represents a function value varying with the tilt angle, D represents a preset maximum value of the function value, x and y represent a predetermined minimum value of the rainfall It denotes a weight for bell and reflected the ratio of the angle of inclination of the application surface.

According to another aspect of the present invention, there is provided an antirust agent supply unit for supplying an antirust agent; A water supply part for supplying water; And a mixing section for mixing the rust inhibitor supplied from the rust inhibitor supply section and the water supplied from the water supply section to produce a rust preventive liquid, wherein the water supply section supplies the rust- And a first regulator for regulating the supply amount of the water so that the weight ratio of the water is 1: 2 to 1: 3.

In one embodiment of the present invention, the rust-preventive liquid producing apparatus further comprises an organic pigment supply unit for supplying the organic pigment to the mixing unit, wherein the organic pigment supply unit supplies the rust- Is in the range of 1: 0.0005 to 1: 0.002.

In one embodiment of the present invention, the first adjuster variably adjusts the supply amount of the water according to at least one of a predetermined reference time-of-hour rainfall level and an inclination angle of a coated surface of the member to be coated to which the rust preventive composition is applied.

According to the embodiment of the present invention, an anticorrosive liquid composition having both excellent anticorrosion and weld defect prevention capability can be obtained.

Further, according to the embodiment of the present invention, it is possible to obtain a rust preventive composition having constant rust resistance and welding defect-preventing ability irrespective of rainfall frequency such as wet season or dry season, or irregularity angle of a coating surface to which a rust preventive liquid is applied.

Further, according to the embodiment of the present invention, it is possible to visually confirm the thickness of the coating film of the rust preventive liquid, to secure a rust preventing period for a predetermined time or more for the welded member before welding, It is possible to easily confirm whether the liquid is applied or over-applied.

The effects of the present invention are not limited to the effects described above. Unless stated, the effects will be apparent to those skilled in the art from the description and the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a graph for explaining a rust preventive composition according to an embodiment of the present invention, showing a correlation between the rust preventability and the occurrence of a weld defect, in relation to the weight ratio of the rust inhibitor in the rust inhibitor.
FIGS. 2 to 3 are photographs for explaining the rust preventive composition according to an embodiment of the present invention, in which a rust preventive liquid is applied to a member to be welded by mixing ratios of organic pigments.
FIG. 4 is a photograph of a rustproofing liquid applied to a member to be welded in order to explain the rust preventive composition according to an embodiment of the present invention. In FIG. 4, It shows that the applied part appears separately.
5 is a configuration diagram of an antirust solution generating apparatus according to an embodiment of the present invention.
FIG. 6 is a block diagram showing the rust preventive liquid generating apparatus according to an embodiment of the present invention in more detail.

Other advantages and features of the present invention and methods of achieving them will be apparent by referring to the embodiments described hereinafter in detail with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

Although not defined, all terms (including technical or scientific terms) used herein have the same meaning as commonly accepted by the generic art in the prior art to which this invention belongs. Terms defined by generic dictionaries may be interpreted to have the same meaning as in the related art and / or in the text of this application, and may be conceptualized or overly formalized, even if not expressly defined herein I will not. A general description of known configurations may be omitted so as not to obscure the gist of the present invention. In the drawings of the present invention, the same reference numerals are used as many as possible for the same or corresponding configurations.

The rust preventive composition according to an embodiment of the present invention is applied to a member to be welded to be welded so as to prevent rust from occurring in the member to be welded, And water mixed at a weight ratio of 2 times or more and 3 times or less with respect to the rust inhibitor. The rust preventive composition according to the embodiment of the present invention has both excellent rustproofing property and weld defect prevention capability.

The rust preventive composition according to one embodiment of the present invention may contain rust inhibitor; Water mixed at a weight ratio of 2 times or more and 3 times or less with respect to the rust inhibitor; And an organic pigment mixed in a weight ratio of not less than 0.0005 and not more than 0.002 with respect to the rust preventive agent. According to this embodiment of the present invention, it is possible to visually confirm the thickness of the coating film of the rust preventive applied to the member to be welded, thereby securing the rust prevention period for the member to be welded before welding, The bonding can be prevented.

In one embodiment of the present invention, the weight ratio of water in the rust inhibitor composition is variably adjusted according to at least one of the predetermined reference time-per-hour rainfall level and the inclination angle of the coated surface of the member to be coated to which the rust preventive liquid is applied. According to this embodiment of the present invention, it is possible to maintain constant rust prevention performance and weld defect prevention ability irrespective of the rainfall frequency such as wet season or dry season, or irregular angle of the coated surface of the member to be welded to which the rust preventive liquid is applied.

Conventional rust inhibitor causes weld defect when used in the welded portion of the welded member to be welded. Conventionally, the operator does not use the rustproofing liquid at the welding site or minimizes the thickness of the rustproofing liquid applied to the member to be welded. However, the rustproofing performance against the member to be welded is lowered, And the like. For example, according to the conditions required for machining and assembling of the shipyard, the duration of the rusting for the steel must be at least one month. In order to meet the requirements of the shipyard, it is conventionally necessary to perform an additional work of applying the rustproofing liquid to the workpieces at a predetermined thickness or more and then removing the rustproofing agent before welding after the rust-inhibiting period, And the productivity is deteriorated. Accordingly, the present invention proposes a rust preventive composition having a rust inhibitive performance that does not cause welding defects at the welded site even when welding is performed on the welded member without removing the rust preventive solution, and satisfies the antirusting requirement period of one month or more.

The rust preventive composition according to an embodiment of the present invention has an application for preventing rust from being applied to a member to be welded which requires welding, and comprises a rust inhibitor and water. The rust inhibitor and water are mixed at a weight ratio of 1: 2 to 1: 3. The antirusting agent imparts rust inhibitive performance to the antirust solution. The rust-preventive agent may include, for example, a water-soluble rust-inhibiting agent based on styrene / acrylates copolymer or the like. The styrene / acrylate copolymer has a nonvolatile content of about 45%, a volatile content of about 55%, and a weight ratio after drying of 45%.

When water is mixed with a gel-type rust inhibitor, the concentration of the rust inhibitor changes depending on the weight ratio of water to the rust inhibitor, and the rust-preventive properties and viscosity of the rust-inhibitive liquid are controlled. The mixing ratio of rust inhibitor and water is an important factor affecting the rustproofing performance of rust inhibitor and the ability to prevent weld defect. When the weight ratio of water to the rust preventive is less than two times, the viscosity of the rust-preventive liquid becomes large and the thickness of the rust-preventive film formed on the workpieces is increased by application of the rust-preventive liquid.

On the other hand, when the weight ratio of water to the rust preventive agent is more than 3 times, the viscosity of the rust-preventive liquid is lowered and the thickness of the rust-preventive film formed on the workpiece is thinned by application of the rust- The rust-inhibiting performance satisfying the rust-inhibiting demand period can not be exhibited. When the weight ratio of water to the rust preventive is more than 3 times, the vertical flow resistance is lowered. When the rust preventive liquid is applied to the inclined application surface, the rust-preventive mixture is molten to the lower end side to form a uniform coating film over the entire applied surface And it is necessary to remove the aggregated portion.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a graph for explaining a rust preventive composition according to an embodiment of the present invention, showing a correlation between the rust preventability and the occurrence of a weld defect, in relation to the weight ratio of the rust inhibitor in the rust inhibitor. 1, when the mixing ratio of the rust inhibitor in the mixed rust-preventive liquid is 0.17 (wt%) (1: 5 in terms of the mixing ratio of rust-preventive agent and water), the rust- And it can be confirmed that it is not much less than the 30 days required for the anticorrosion. If the mixing ratio of the rust inhibitor in the mixed rust inhibitor is 0.20 (wt%) (1: 4 in terms of the ratio of the rust inhibitor to the water), the rust preventive date at the time of outdoor exposure of the member to be welded is 30 days I can not go crazy. When the mixing ratio of the rustproofing agent in the mixed rustproofing liquid is 0.50 (wt%) (1: 1 in terms of the ratio of the rust-preventive agent to the water), the rusting- Welding defect occurred at the welded part of the welded member.

When the mixing ratio of the rust inhibitor in the mixed rust-preventive liquid is 0.25 (wt%) (1: 3 in terms of the rust-preventive-water mixing ratio) and 0.33 (wt% 2), the degree of rust prevention at the time of outdoor exposure of the welded member exceeded 30 days, which is the rust prevention request period, and did not cause weld defect. As shown in Table 1 and Table 1 below, the rust-preventive liquid composition according to the embodiment of the present invention in which the rust-preventive agent and water are mixed at a mixing ratio of 1: 2 to 1: 3 has both excellent rust- It can be confirmed that a uniform anti-corrosive film is formed over the inclined application surface due to high flow resistance.

Mixing ratio (weight ratio) Period of antirust duration
(Empty iron standard) Welding influence (RT standard) Vertical flow resistance Remarks Anti-rust agent water One One 90 days Possible weld defect has exist Comparative Example One 2 55 days No welding possible has exist Honor One 3 40 days No welding possible has exist Honor One 5 10 days - none Comparative Example

In the above Table 1, the mixing ratio is based on the pre-drying period, and the rustproofing period is the same as that of the first embodiment except that rainfall iron (October to February), in which the monthly precipitation is less than 100 mm, And the weld impact was evaluated based on a radiographic examination test (RT), and vertical flow resistance was evaluated based on a sponge brush application. In the case of the invention example in which the rust-preventive agent and water are mixed at a ratio of 1: 3, the rust-inhibitive mixture has a flow resistance property in the vertical part,

The rust-preventive mixture is not formed of a hard rust-preventive film at the beginning of application, but has a property of forming a soft coating layer at the beginning and hardening over time. Therefore, when the rustproofing duration is evaluated under severe harsh conditions, there is a possibility that the antirust property may be deteriorated due to the loss of the rust preventing agent due to the falling rainwater. As with most weld surfaces, when evaluating the rustproofing properties of weld surfaces that are vertical or inclined, the duration of rust-out durations will be greater than those shown in Table 1.

In the case of the comparative example in which the mixing ratio of the rust preventive agent and the water is 1: 1, the water in the rust preventive mixture was not smoothly dried at a temperature of 0 ° C or lower, and a weld defect occurred. Therefore, in the comparative example in which the mixing ratio of the rust-preventive agent and water is 1: 1, there is a possibility that the inside water is not evaporated properly when applied in winter, and when the rust- There is a possibility of welding defect and it is impossible to apply.

In one embodiment of the present invention, the rust preventive composition has application for preventing rust from being applied to a member to be welded which requires welding, and is composed of a rust inhibitor, water and an organic pigment, Are mixed so as to have a weight ratio of 1: 2 to 1: 3, and the rust inhibitor and the organic pigment are mixed so as to have a weight ratio of 1: 0.0005 to 0.002. The reason why the mixing ratio of the rust preventive agent and water is limited is as described above, and thus a duplicate description will be omitted.

The rustproofing agent and the water are transparent so that the state of the surface to which the rustproofing liquid is applied, that is, whether rust or foreign matter is generated, can be confirmed. The organic pigments have a predetermined color so as to be able to confirm whether or not the rust inhibitor is applied and to visually check the over-rust area of the rust inhibitor. If the thickness of the rust-preventive mixture is abnormally excessive, it can be confirmed through the color of the organic pigment. Examples of the organic pigment include phthalocyanine blue and the like.

If the weight ratio of the organic pigment to the rust inhibitor is less than 0.0005, the color of the rust preventive composition becomes too light and the transparency becomes large, so that it is difficult to visually distinguish the applied region excessively after application of the rust-preventive liquid or after drying of the rust- . On the other hand, if the weight ratio of the organic pigment to the rust preventive exceeds 0.002, the rustproofing liquid becomes opaque and it is difficult to confirm whether or not rust or foreign matter is generated in the lower surface of the rustproofing liquid applied surface. In addition, organic pigments, like rust preventives, can also adversely affect welding quality, so excessive welding of organic pigments can lead to weld bonds. Excessive mixing of organic pigments can increase the cost of the rust inhibitor more than necessary . Therefore, the weight ratio of the organic pigment to the rust preventive agent is preferably from 0.0005 to 0.002.

FIG. 2 is a photograph of a rustproofing liquid prepared by mixing an antirusting agent, water and an organic pigment in a ratio of 1: 3: 0.0001 to a member to be welded, 0.0005. The rust preventive solution is applied to the workpiece. 2 and 3, when the rust-preventive agent and the organic pigment are mixed at a mixing ratio of 1: 0.0001, the color of the rust-preventive liquid is so small that the applied region and the unused region of the rust- Is 1: 0.0001, when the mixing ratio of the rust inhibitor and the organic pigment is 1: 0.0005, it can be confirmed that the applied region and the unused region of the rust preventive liquid are easily distinguished by the naked eye.

FIG. 4 is a photograph of a rustproofing liquid applied to a member to be welded in order to explain the rust preventive composition according to an embodiment of the present invention. In the rustproofing liquid (the rustproofing agent and the organic pigment The mixing ratio of 1: 0.0005) shows that the normal application site and the transient application site are distinguished. Referring to FIG. 4 and the following Table 2, when the rust preventive liquid is mixed with the organic pigment in an appropriate ratio, it is possible to easily distinguish between the normal application region of the rust-inhibitive liquid appearing in a pale blue color and the transitional application region of the rust- have. It is also possible to identify and remove the portion to which the rust preventive liquid is excessively applied before welding the member to be welded in order to prevent the risk of welding defect more stably.

Mixing ratio (weight ratio) Visible color classification
Weld defect
Possibility
Remarks
Anti-rust agent
Organic pigment Normal application site VS
Unused area Normal application area
VS
Transient application site One 0.003 ○ ○ Possibility of weld defect Price rise One 0.002 ○ ○ Possible weld defect One 0.0005 ○ ○ Possible weld defect One 0.0001 × ○ Possible weld defect

In Table 2, the color classification was evaluated by judging the degree of discrimination by naked eyes after drying. The normal application site was a site formed uniformly with a sponge brush, and the transient application site was composed of a rust- It is an abnormal application site.

On the other hand, even if the same rust inhibitor is used, the number of days of rust inhibition can be different depending on the inclination angle of the wet season, the dry season, and the coated surface of the member to be welded. For example, in the rainy season, when the rainfall is high, the rainfall phenomenon occurs more rapidly over a wider area than in the dry weather, where the rainfall frequency is relatively low, and the number of days that can be rusted is shortened. Accordingly, the operator is required to separately manage the schedule of the welding work of the steel material in consideration of the period during which corrosion can be prevented by the season, so that it is likely to cause cross-talk. In particular, in the case of a soft type rust preventing agent, there is a possibility that the coating film is lost due to external influences such as rainwater due to the application of the rust-preventive liquid and the characteristics of the early loose coating after drying, . Embodiments of the present invention described below are to provide an anticorrosive solution composition, an antirust solution preparation device, and a corrosion inhibitor solution composition that maintain constant rust prevention performance and welding defect prevention performance irrespective of the rainfall frequency of dry or dry season or irregular angle of application surface to which rust- Proposed method of rust preventive liquid composition.

FIG. 5 is a block diagram of an apparatus for generating rust inhibitor according to an embodiment of the present invention, and FIG. 6 is a detailed diagram illustrating a rustproofing liquid generating apparatus according to an embodiment of the present invention. 5 and 6, the rust preventive solution producing apparatus 100 according to an embodiment of the present invention includes a water supplying unit 110 for supplying water to the mixing unit 140, an organic pigment An antirust agent supply part 130 for supplying an antirusting agent to the mixing part 140 and water supplied from the water supply part 110 and an organic pigment supplied from the organic pigment supply part 120 and an anti- And a mixing unit 140 mixing the rust inhibitor supplied from the mixing unit 130 to produce a rust preventive liquid.

The water supplying unit 110 includes a first adjusting unit 111 that adjusts the supply amount of water so that the weight ratio of water to the rust inhibitor in the rustproofing liquid in the mixing unit 140 is 1: 2 or more and 1: 3 or less. The organic pigment supplying unit 120 may include a second adjusting unit 121 for adjusting the supply amount of the organic pigment such that the weight ratio of the organic pigment to the rust inhibitor in the rustproofing liquid in the mixing unit 140 is 1: . The rust preventive supplying unit 130 includes a third adjusting unit 131 for adjusting the supply amount of the rust preventing agent. The mixing unit 140 may include agitation means (not shown) for mixing the rust inhibitor, water, and organic pigment. Instead of the first adjusting section 111 and the second adjusting section 121, the supply amount of the rust inhibitor to the supply amount of water or the organic pigment is adjusted in the third adjusting section 131 to adjust the mixing ratio of the rust- It is also possible to do.

The first adjusting unit 111 can variably adjust the supply amount of water according to at least one of the predetermined reference hourly hourly rainfall level and the inclination angle of the coated surface of the member to be coated to which the rust preventive composition is to be applied. The mixing ratio of the rust inhibitor and the water in the mixing portion 140 may vary according to the reference rainfall level set by the first controller 111 or the inclination angle of the coated surface of the member to be welded.

6, the water supply unit 110 includes a water supply tank 112 for storing water and supplying water to the mixing unit 140 during the manufacture of the rust preventive liquid, a first control unit 111 ). The organic pigment supply unit 120 includes an organic pigment supply tank 122 for storing the organic pigment and supplying the organic pigment to the mixing unit 140 during the production of the rust preventive liquid and a second adjusting unit 121 for adjusting the supply amount of the organic pigment ). The rust preventive agent supply unit 130 includes a rust preventive agent supply tank 132 for storing the rust preventive agent and supplying the rust preventive agent to the mixing unit 140 during the preparation of the rust preventive liquid and a third adjustment unit 131 for adjusting the rust preventive agent supply amount. The input unit 150 may be separately provided for each of the supply units 110, 120, and 130, or may be integrated into one.

The first control unit 111 includes a first valve 1111, a first valve control unit 1112, a water supply amount calculation unit 1113, and a storage unit 1114. The first valve 1111 is installed on the first supply line 113 connecting the water supply tank 112 and the mixing unit 140. The supply amount of water is adjusted according to the opening degree of the first valve 1111. The first valve control unit 1112 controls the opening amount of the first valve 1111 by driving the first valve 1111 to adjust the supply amount of water. The water supply amount calculating unit 1113 calculates the supply amount of water on the basis of a preset reference time-of-hour rainfall level or the inclination angle of the coated surface of the member to be coated to which the rust preventive composition is applied. The storage unit 1114 stores data such as a look-up table or a function indicating a correspondence relationship between a preset reference time-of-hour rainfall level or the amount of water supplied to the tilted angle of the coated surface of the workpiece to be coated with the rust preventive composition.

For example, when a command for instructing the production of rust preventive liquid is inputted from the operator through the input unit 150, the water supply amount calculation unit 1113 calculates the water supply amount calculation unit 1113 based on the lookup table or function recorded in the storage unit 11114 (Weight ratio) of the water to the rust preventive agent is calculated from the data of the water level of the rust-inhibiting liquid composition, based on the rainfall level per predetermined reference time corresponding to the present area or the inclination angle of the coated surface of the member to be coated to be coated with the rust- The first valve control unit 1112 regulates the opening degree of the first valve 1111 according to the supply amount of water calculated by the water supply amount calculation unit 1113 and accordingly an appropriate amount of water is supplied to the mixing unit 140.

The second control unit 121 includes a second valve 1211 and a second valve control unit 1212. The second valve 1211 is installed on the second supply line 123 connecting the organic pigment supply tank 122 and the mixing unit 140. The supply amount of the organic pigment is adjusted according to the opening degree of the second valve 1211. The second valve control unit 1212 controls the opening degree of the second valve 1211 by driving the second valve 1211 to adjust the supply amount of the organic pigment. For example, when a command for instructing manufacture of rust preventive liquid is inputted from the operator through the input unit 150, the second valve control unit 1212 adjusts the opening degree of the second valve 1211 according to an instruction from the operator, And an appropriate amount of the organic pigment is supplied to the mixing portion 140.

The third control unit 131 includes a third valve 1311 and a third valve control unit 1312. The third valve 1311 is installed on the third supply line 133 connecting the rustproofing agent supply tank 132 and the mixing portion 140. The supply amount of the rust inhibitor is adjusted according to the degree of opening of the third valve 1311. The third valve control unit 1312 controls the opening degree of the third valve 1311 by driving the third valve 1311 to adjust the supply amount of the rust inhibitor. For example, when a command for instructing manufacture of rust preventive liquid is inputted from the operator through the input unit 150, the third valve control unit 1312 adjusts the opening degree of the third valve 1311 according to an instruction from the operator, And an appropriate amount of rust inhibitor is supplied to the mixing portion 140.

Each of the valves 1111, 1211, and 1311 may be, for example, a flow control valve. In one embodiment, the supply lines 113, 123, and 133 may be provided with on-off valves (not shown) that selectively block the flow paths. According to a modified embodiment of the present invention, the pressure of the pump (not shown) inside the supply tanks 112, 122, and 132 may be controlled by the valve control units 1112, 1212, and 1312 instead of the valves 1111, 1211, It is also possible to control the supply amounts of water, organic pigments and rust inhibitor.

In one embodiment of the present invention, the water supply amount calculation unit 1113 can calculate the water supply amount by calculating the weight ratio of water to the rust inhibitor based on the reference rainfall level set in advance according to the following equation (1).

[Equation 1]

Where a represents a predetermined minimum value of the rainfall level per a reference time, and b represents a predetermined threshold value of the rainfall level per reference hour. In the formula (1), w represents the weight ratio of water to be mixed with the rust inhibitor, R L is a set value of 2 or more and is a minimum value of the weight ratio of water to be mixed with the rust preventive agent. M is a value which is set to a value of 3 or less but larger than L. The weight ratio of water to be mixed with the rust- . The reference time may be, but is not limited to, units such as season, month, week, and day. The reference hourly rainfall level may be a predetermined value according to the statistical rainfall distribution of the area.

For example, at the maximum rainy season during the year, the rainfall level per reference time is determined as the maximum value b, and the weight ratio of water to the rustproofing agent is calculated as the minimum value L. At the maximum dry season during the year, the rainfall level per reference hour is determined as the minimum value a, and the weight ratio of water to the rust inhibitor is calculated as the maximum value M. The mixing ratio of water to the rust inhibitor at the time of rainy season can be reduced as compared with that during the dry season. Therefore, it is possible to effectively and easily manage the work schedule such as welding by keeping the rust preventive period constant at all times irrespective of the weather conditions of the wet season and the dry season.

The mixing ratio (weight ratio) w of the water to the rust preventive agent is decreased as the current reference time per hour increases, and is represented by a minimum value of L or more and a maximum value of M or less, and L and M are set within a range of 2 to 3, Irrespective of the reference hourly rainfall level, the mixing ratio of the rust preventive agent and water falls within the range of 1: 2 to 1: 3. Therefore, the occurrence of welding defects is prevented during the welding work of the workpieces to be welded.

Alternatively, if the worker inputs only a work start command through the input unit 150, the water supply amount calculation unit 1113 calculates the water supply amount per hour It is possible to automatically determine the operation date and time and determine the rainfall level per reference time corresponding to the current time.

In another embodiment of the present invention, the water supply amount calculating unit 1113 calculates the water amount ratio of the rust-preventant based on the inclination angle of the coated surface of the member to be welded to which the rust preventive composition is to be applied according to the following equation The supply amount can be calculated.

[Equation 2]

Wherein A represents a function value that varies with an inclination angle, c represents a function value (a function value), and A represents a function value that varies depending on the angle of inclination, and w represents a weight ratio of water to be mixed with the rust preventive, L represents a minimum value of the weight ratio of water to be mixed with the rust preventive agent, M represents a value which is not more than 3 but which is greater than L , Which is the maximum value of the weight ratio of water to be mixed with the rust preventive agent.

For example, when the inclination angle of the coated surface of the member to be welded is the maximum value d, the weight ratio of the water to be mixed with the rust preventive agent is calculated as the minimum value L. When the inclination angle of the coated surface of the member to be welded is the minimum value c, the weight ratio of the water to be mixed with the rust preventive agent is calculated as the maximum value M. As the angle of inclination of the coated surface of the member to be welded is larger, the mixing ratio of water to the rust inhibitor is reduced to reduce the viscosity of the rust preventive liquid and to prevent the rust preventive liquid from flowing downward, thereby forming a uniform rust preventive film over the coated surface. Accordingly, it is also possible to prevent the anti-rusting period from being shortened. Therefore, it is possible to effectively and easily manage the work schedule such as welding by keeping the rust preventive period constant at all times irrespective of the inclination angle of the coated surface of the member to be welded.

The mixing ratio (weight ratio) w of the water to the rust preventive agent is decreased as the inclination angle of the coated surface of the member to be welded is increased, and is represented by a minimum value of L or more and a maximum value of M or less, and L and M of 2 to 3 The mixing ratio of the rust preventive agent and the water falls within the range of 1: 2 to 1: 3 irrespective of the inclination angle of the coated surface of the member to be welded. Therefore, the occurrence of welding defects is prevented during the welding work of the workpieces to be welded.

The inclination angle of the coated surface of the workpiece to be welded can be inputted from the operator through the input unit 150. [ Alternatively, when the operator inputs only the operation start command without inputting the tilt angle through the input unit 150, the weight ratio of the water to the rust inhibitor may be calculated based on the tilt angle set as the default or the most recently used.

In another embodiment of the present invention, the water supply amount calculating section 1113 calculates the water supply amount calculating section 1113 based on the rainfall level per predetermined reference time and the inclination angle of the coated surface of the workpiece to be coated with the rust preventive composition, By calculating the weight ratio of water to water, the supply amount of water can be calculated.

[Equation 3]

(T) denotes a rainfall level per a reference time, a denotes a predetermined minimum value of the rainfall level per a reference time, and b denotes a rainfall level per reference time L is a set value of 2 or more and is a minimum value of the weight ratio of water to be mixed with the rust preventive agent. M is a value which is set to a value of 3 or less but larger than L. The weight ratio of water to be mixed with the rust- Where A represents a function value that changes according to an inclination angle, c represents a preset minimum value of a function value, d represents a function value And x and y represent weights for the reflection rate of the rainfall level per unit time and the inclination angle of the application surface.

For example, when the rainfall level per a reference hour is the maximum value b and the inclination angle of the coated surface of the member to be welded is the maximum value d as in the case of the maximum rainy season during the year, the weight ratio of water to be mixed with the rust preventive agent is calculated as the minimum value L. When the rainfall level per a reference time is the minimum value a and the inclination angle of the coated surface of the member to be welded is the minimum value c as in the case of the maximum dry season during the year, the weight ratio of water to be mixed with the rust preventive agent is calculated as the maximum value M. According to the set values of the weights x and y, the reflection rate of the rainfall level per unit time and the inclination angle of the coated surface with respect to the weight ratio of water to the rust inhibitor can be adjusted.

When the amount of water supplied to the rustproofing agent is adjusted according to the formula (3), the amount of water supplied to the rustproofing agent is controlled so as to reduce the mixing ratio of water to the rust inhibitor during the rainy season, As the angle of inclination of the application surface is larger, the mixing ratio of water to the rust inhibitor is reduced to reduce the viscosity of the rust preventive liquid and prevent the rust preventive liquid from flowing to the lower portion, thereby forming a uniform rust preventive film over the application surface. Therefore, it is possible to effectively and easily manage the work schedule such as welding by keeping the rust preventive period constant at all times irrespective of the weather conditions of the wet season and the dry season and the inclination angle of the coated surface of the welded member.

The mixing ratio (weight ratio) w of the water to the rust inhibitor is decreased as the rainfall level per current reference time increases and as the inclination angle of the coated surface of the member to be welded increases, L and M are set within a range of 2 to 3, so that the mixing ratio of the rust preventive agent and water falls within a range of 1: 2 to 1: 3 irrespective of the rainfall level per reference time and the inclination angle of the coated surface of the member to be welded. Therefore, the occurrence of welding defects is prevented during the welding work of the workpieces to be welded. The member to be welded is not particularly limited as long as it is an object of welding such as H-BEAM, T-BAR, I-BEAM, CHANNEL (a section steel), ANGLE (a section steel) and the like.

It is to be understood that the above-described embodiments are provided to facilitate understanding of the present invention, and do not limit the scope of the present invention, and it is to be understood that various modifications are possible within the scope of the present invention. It is to be understood that the technical scope of the present invention should be determined by the technical idea of the claims and the technical scope of protection of the present invention is not limited to the literary description of the claims, The invention of the present invention.

100: rustproofing liquid generating apparatus 110: water supply unit
111: first adjusting portion 1111: first valve
1112: first valve control section 1113: water supply amount calculating section
1114: storage unit 112: water supply tank
113: first supply line 120: organic pigment supply part
121: second adjusting portion 1211: second valve
1212: second valve control section 122: organic pigment supply tank
123: second supply line 130: rust preventive supply unit
131: third adjusting portion 1311: third valve
1312: third valve control section 132: rustproofing agent supply tank
133: third supply line 140: mixing part
150:

Claims (10)

Rust inhibitor; And
Water mixed at a weight ratio of 1: 2 to 1: 3 with respect to the rust inhibitor,
The water is mixed so as to have a variable weight ratio with respect to the rust inhibitor according to a predetermined reference hourly rainfall level,
The water is mixed with the rust inhibitor at a weight ratio determined according to the following formula 1,
[Equation 1]

Wherein w represents the weight ratio of the water to be mixed with the rust inhibitor, R (t) represents the rainfall level per the reference hour, a represents a predetermined minimum value of the rainfall level per the reference time, L is a value set at 2 or more and represents a minimum value of the weight ratio of the water to be mixed with the rust inhibitor, M is a value which is set to a value of 3 or less but greater than L, And the maximum value of the weight ratio of the water mixed with the rust inhibitor. The method according to claim 1,
And an organic pigment mixed in a weight ratio of 1: 0.0005 to 1: 0.002 to said rust inhibitor. delete delete 3. The method according to claim 1 or 2,
Wherein the water is mixed so as to have a variable weight ratio with respect to the rust inhibitor according to the inclination angle of the coated surface of the member to be coated to which the rust preventive composition is applied. Rust inhibitor; And
Water mixed at a weight ratio of 1: 2 to 1: 3 with respect to the rust inhibitor,
The water is mixed so as to have a variable weight ratio with respect to the rust inhibitor according to the inclination angle of the coated surface of the member to be coated to which the rust preventive composition is applied,
The water is mixed with the rust inhibitor at a weight ratio determined according to the following formula (2)
[Equation 2]

Wherein A represents the inclination angle of the coated surface of the member to be welded, A (θ) represents a function value which changes in accordance with the inclination angle, c represents a predetermined minimum value of the function value, d represents a preset maximum value of the function value, L represents a minimum value of the weight ratio of the water mixed with the rust inhibitor, Is a value which is set to a value of not more than 3 but larger than L and which indicates a maximum value of a weight ratio of the water mixed with the rust inhibitor. Rust inhibitor; And
Water mixed at a weight ratio of 1: 2 to 1: 3 with respect to the rust inhibitor,
The water is mixed to have a variable weight ratio with respect to the antirust agent according to a predetermined reference time-per-hour rainfall level and an inclination angle of the coated surface of the member to be coated to which the rust-
The water is mixed with the rust inhibitor at a weight ratio determined according to the following formula (3)
[Equation 3]

(T) denotes a rainfall level per the reference time, a denotes a predetermined minimum value of the rainfall level per the reference time, and b denotes a reference value of the reference L is a value set at 2 or more and represents a minimum value of the weight ratio of the water to be mixed with the rust inhibitor, M is a value which is set to a value of 3 or less but greater than L, Wherein A represents a maximum value of the weight of the water mixed with the rust inhibitor,? Represents a tilt angle of the coated surface of the member to be welded, A (?) Represents a function value varying with the tilt angle, D represents a preset maximum value of the function value, x and y represent a predetermined minimum value of the rainfall Blood weld indicating the weight of the bell and reflection ratio of the tilt angle of the anti-corrosive coating surface damper fluid composition. An antirust agent supply part for supplying an antirust agent;
A water supply part for supplying water;
A mixing unit mixing the rust inhibitor supplied from the rust inhibitor supply unit and the water supplied from the water supply unit to produce a rust preventive liquid; And
And an organic pigment supply unit for supplying the organic pigment to the mixing unit,
The water supply unit,
And a first controller for controlling the supply amount of the water so that the weight ratio of the rust-preventive agent to the rust-preventive agent is 1: 2 to 1: 3,
Wherein the organic pigment supply unit comprises:
And a second adjuster for adjusting the supply amount of the organic pigment so that the weight ratio of the organic pigment to the rust inhibitor in the rust preventive solution is 1: 0.0005 to 1: 0.002. delete 9. The method of claim 8,
The first adjuster may comprise:
Wherein the supply amount of the water is variably controlled in accordance with at least one of a preset reference time-per-hour rainfall level and an inclination angle of a coated surface of the member to be welded to which the rust preventive composition is applied.

Images