WO2018021898A1 - Plated steel plate first cooling device, plating facility, and plated steel plate cooling method - Google Patents

Plated steel plate first cooling device, plating facility, and plated steel plate cooling method Download PDF

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Publication number
WO2018021898A1
WO2018021898A1 PCT/KR2017/008262 KR2017008262W WO2018021898A1 WO 2018021898 A1 WO2018021898 A1 WO 2018021898A1 KR 2017008262 W KR2017008262 W KR 2017008262W WO 2018021898 A1 WO2018021898 A1 WO 2018021898A1
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WO
WIPO (PCT)
Prior art keywords
steel sheet
cooling
unit
cooling water
plated steel
Prior art date
Application number
PCT/KR2017/008262
Other languages
French (fr)
Korean (ko)
Inventor
천명식
장태인
이원호
김상준
천시열
Original Assignee
주식회사 포스코
주식회사 파이벡스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020160096736A external-priority patent/KR101778457B1/en
Priority claimed from KR1020160116656A external-priority patent/KR101795965B1/en
Application filed by 주식회사 포스코, 주식회사 파이벡스 filed Critical 주식회사 포스코
Priority to EP17834838.9A priority Critical patent/EP3492619A4/en
Priority to MX2019001068A priority patent/MX2019001068A/en
Priority to CN201780045895.2A priority patent/CN109563604A/en
Publication of WO2018021898A1 publication Critical patent/WO2018021898A1/en

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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
    • C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
    • C23C2/18—Removing excess of molten coatings from elongated material
    • C23C2/20—Strips; Plates
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/40—Plates; Strips

Definitions

  • the present invention relates to a plated steel sheet first cooling device, plating equipment and plated steel sheet cooling method.
  • the plating solution in the molten state attached to the surface of the steel sheet passed through the plating bath provided with a plating solution such as zinc is cooled to produce a plated steel sheet.
  • an air knife is used to form a plating layer having an appropriate thickness, and then the unsolidified zinc solution of about 460 ° C. or more is cooled. As the device solidifies, a plated layer having sufficient strength is formed on the surface of the steel sheet to produce a plated steel sheet.
  • the sequin pattern which is a crystal growth pattern generated on the surface of the plating layer, cannot be refined, which causes problems in plating quality.
  • the non-solidified plating solution was cooled by using a gas such as an air cooler, and the plating layer, which was partially solidified and secured to some extent, was cooled by a cooling nozzle spraying cooling water. It was.
  • the reason for cooling by using an air cooler at the initial stage of cooling the steel plate coated with the plating solution is that spraying the water droplets of the cooling water onto the uncoagulated plating layer causes a pit mark in the surface of the plating layer. Because.
  • the gas is injected by cooling to prevent the occurrence of surface defects of the plating steel sheet.
  • the plating layer which is partially solidified by the air cooler to secure a certain degree of strength is completely solidified by spraying cooling water from a cooling nozzle.
  • the cooling water must be attached to the plating layer to receive heat from the plating layer.
  • the cooling ability is lowered.
  • the cooling method using gas at the initial stage of the solidification of the plating layer is slower than the cooling method using the cooling water, and even in the case of the cooling method by spraying the cooling water, only some cooling water is attached to the plating layer, thereby decreasing the cooling capacity.
  • the problem that the sequin which is the zinc solidification pattern of the plating layer by low speed cooling becomes large becomes large.
  • the sequins pattern shown in (a) of FIG. 10 when the sequins pattern shown in (a) of FIG. 10 is formed on the surface of the plated steel sheet, the degree of glossiness and glossiness of the plated product may be lowered, and thus, the sequin pattern may not be used in high-end products such as automobile exterior materials or exterior materials of home appliances.
  • the first cooling apparatus of a plated steel sheet includes a cooling water injection unit for injecting cooling water onto the plated steel sheet, and a charging unit disposed on at least one side of the cooling water injection unit to charge the cooling water.
  • the cooling water injection unit may be installed so that the cooling water is sprayed in a charged state by the charging unit.
  • the cooling water injection unit of the plated steel sheet first cooling apparatus the first container portion for receiving the cooling water, the flow path portion is connected to the first container portion, the cooling water is moved and the Connected to the flow path portion may receive a coolant from the first container portion, and may include a nozzle unit for spraying the coolant to the plated steel sheet.
  • first vessel portion of the plated steel sheet first cooling device may be characterized in that the ground is grounded.
  • the charging unit of the plated steel sheet first cooling device characterized in that it comprises an electrode portion is applied to the electrostatic charge to form an electric field, the flow path portion is arranged to intersect the electrode portion. can do.
  • the electrode portion of the plated steel sheet first cooling device may be characterized in that it is disposed on the upper and lower sides of the flow path portion.
  • the charging unit of the plated steel sheet first cooling apparatus further comprises an electrode support portion for supporting the electrode portion, the electrode support portion, the first body is formed with the first container portion In front of the unit, it may be characterized in that it is installed to be integral with or coupled to the first body unit.
  • the nozzle portion of the plated steel sheet first cooling apparatus may be characterized in that the sprayed cooling water in the form of droplets.
  • the nozzle portion of the plated steel sheet first cooling apparatus may be characterized in that a plurality is provided in the width direction of the plated steel sheet.
  • the cooling water injection unit of the plated steel sheet first cooling device may be in communication with the nozzle portion, may include an injection pressure providing unit for providing a gas to give the injection pressure to the cooling water.
  • the plated steel sheet according to an embodiment of the present invention is provided on the periphery of the nozzle portion of the first cooling device, and may further include a first gas curtain portion for inducing the injected cooling water to the steel sheet.
  • Plating equipment may include a plating bath and the first cooling device for the plated steel sheet provided on the movement path of the plated steel sheet discharged from the plating bath.
  • the plating facility may include a second cooling device plated steel sheet provided on the steel plate moving path between the plating bath and the first cooling device.
  • the second cooling device of the plating equipment may be characterized in that the cooling water to form a mist by ultrasonic vibration and spraying the steel sheet with gas.
  • the gas injection unit for injecting gas into the steel sheet, forming a cooling water in the fog to the steel sheet along the gas injected from the gas injection unit It may include an ultrasonic wave unit for injecting and a mist formed in the ultrasonic unit and a filter unit provided on the movement path of the gas injected from the gas injection unit.
  • the filter unit of the plating equipment may be characterized in that to adjust the size of the mist particles to be sprayed on the steel sheet.
  • the filter unit of the plating equipment according to another embodiment of the present invention, the filter frame portion and the filter frame portion provided on the flow path of the mist formed in the ultrasonic unit is provided, the flow path of some mist particles
  • the remaining fog particles may include a throttle plate provided to collide by the moving inertia force.
  • the filter frame portion is provided in a plurality at regular intervals, it may be characterized in that it is provided obliquely in the flow path of the mist particles.
  • the method for cooling a plated steel sheet according to another embodiment of the present invention includes a plating process of coating a plating solution on a steel sheet, a wiping process of adjusting the thickness of the plating solution immersed on the steel sheet, and a cooling process.
  • a plating process of coating a plating solution on a steel sheet includes a wiping process of adjusting the thickness of the plating solution immersed on the steel sheet, and a cooling process.
  • Silver but cooling by spraying the cooling water to the steel sheet, the cooling water may be characterized in that the sprayed in a charged state.
  • the pre-cooling step of performing the cooling for the steel plate coated with the plating solution and the same by the charging of the steel sheet cooled in the pre-cooling step may include a post-cooling step of cooling by spraying the cooling water imparted polarity.
  • the plated steel sheet first cooling device, the plating equipment, and the plated steel sheet cooling method of the present invention increase the cooling rate of the plated layer coated on the steel sheet, thereby improving the quality of the plated steel sheet and preventing the enlargement of equipment. .
  • the coating solution coated on the outer surface is charged while charging the cooling water, thereby increasing the charging efficiency with respect to the injected cooling water. It is possible to increase the rate, it is possible to increase the cooling efficiency according to the injection of the cooling water.
  • FIG. 1 is a front view showing a plating facility of the present invention.
  • Figure 2 is a front view showing a plated steel sheet first cooling device in the plating equipment of the present invention.
  • Figure 3 is a perspective view showing a plated steel sheet first cooling device in the plating equipment of the present invention.
  • Figure 4 is a front view showing an embodiment in which the plated steel sheet first cooling device of the present invention plating apparatus comprises a first gas curtain portion.
  • FIG. 5 is a front view showing a plated steel sheet second cooling device in the plating equipment of the present invention.
  • FIG. 6 is a front view showing an embodiment in which the temperature control unit of the gas injection unit is provided outside the gas supply unit in the second cooling device of the plating apparatus of the present invention plating equipment.
  • FIG. 7 is a perspective view showing a second plated steel cooling apparatus in the plating equipment of the present invention.
  • FIG 8 is a front view showing an embodiment in which the second body unit includes a second gas curtain part in the second cooling apparatus of the plated steel sheet of the plating apparatus of the present invention.
  • FIG. 9 is a front view showing an operating state of the filter unit in the plated steel sheet second cooling apparatus of the present invention plating equipment.
  • FIG. 10 is a photograph showing a state in which a sequins pattern is coarsened when the plating layer is cooled by the prior art and a state where the sequins pattern is fine when the plating layer is cooled by the present invention.
  • the present invention can not only improve the quality of the plated steel sheet (S) but also prevent the enlargement of equipment.
  • Figure 2 is a front view showing a plated steel sheet first cooling device 200 of the present invention, referring to this, plated steel sheet first cooling device 200 according to an embodiment of the present invention And a cooling water spraying unit 220 for spraying cooling water onto the plated steel sheet S, and a charging unit 230 disposed on at least one side of the cooling water spraying unit 220 to charge the cooling water. 220 may be installed so that the cooling water is injected in a state charged by the charging unit 230.
  • the plated steel sheet first cooling device 200 may spray the cooling water in a charged state.
  • the cooling water injection unit 220 is provided on one side of the charging unit 230, the cooling water is injected in a charged state, thereby increasing the charging efficiency of the cooling water as the injected cooling water is charged with the same polarity. Since it is possible to increase the adhesion rate of the cooling water to the plating layer on the steel sheet (S) it is possible to increase the cooling efficiency.
  • the cooling water injection unit 220 of the plated steel sheet first cooling device 200 according to an embodiment of the present invention, the first vessel portion 222, the first vessel portion 222 and receiving the cooling water
  • the nozzle unit 223 connected to the flow path part 221 and the flow path part 221 to which the coolant moves, receives the coolant from the first container part 222, and sprays the coolant to the plated steel sheet. ) May be included.
  • the flow path part 221 serves to transfer the sprayed coolant from the first container part 222 to the nozzle part 223, wherein a part of the flow path part 221 is the charging unit ( By being penetrated through the 230 to the front of the charging direction than the charging unit 230, it is possible to charge the sprayed cooling water to the same electrode to be injected. Detailed description thereof will be described later.
  • the first container part 222 is configured to provide the coolant to be injected, and may be connected to the supply pipe to receive the coolant W from the outside, and some of the stored coolant may be discharged through the drain pipe. . However, most of the stored cooling water is delivered to the nozzle part 223 through the flow path part 221 to be sprayed onto the steel sheet S.
  • the first container part 222 may be grounded to ground, and may be formed of a material of a conductor to perform a function such as receiving negative charges from the ground or discharging negative charges when the coolant is charged. It becomes possible.
  • the first container portion 222 of the plated steel sheet first cooling device 200 may be grounded.
  • the nozzle unit 223 serves to spray the cooling water transferred from the first container part 222 through the flow path part 221 to the steel sheet (S).
  • the nozzle unit 223 may be configured to increase the injection speed of the cooling water to be sprayed by having a hole in the shape that the injection flow path of the cooling water to be injected becomes smaller.
  • the nozzle unit 223 of the plated steel sheet first cooling device 200 may be characterized by spraying the cooling water in the form of droplets.
  • the nozzle unit 223 may be provided as a spray nozzle that can widen the spraying area of the cooling water sprayed by spraying the cooling water in the form of droplets.
  • a plurality of the nozzle units 223 may be configured to correspond to the width of the steel sheet (S), which will be described later with reference to FIG. 3.
  • the plated steel sheet first cooling device 200 further includes a first body unit 210 provided on the movement path of the steel sheet, the coolant spray unit 220 , Coupled to the first body unit 210, provided to spray the cooling water onto the steel sheet S, and the charging unit 230 is coupled to the first body unit 210 and sprayed with the cooling water.
  • a flow path part 221 through which the coolant of the unit 220 moves may be provided to penetrate to impart the same polarity to the coolant injected from the coolant injection unit 220.
  • the charging unit 230 of the plated steel sheet first cooling device 200 may be coupled to the first body unit 210 integrally with the cooling water injection unit 220. have.
  • the plated steel sheet first cooling device 200 of the present invention is connected to the charging unit 230 integrally with the cooling water injection unit 220 through which the cooling water is injected, so that the cooling water may be injected after the polarity is given.
  • the first body unit 210 serves as a body to which the cooling water spraying unit 220 and the charging unit 230 are coupled, and the plated steel layer S coated with a plating layer in which the plating solution L is partially solidified. It is provided on the movement path of.
  • the first body unit 210 includes a first frame portion 211 and a first gas curtain portion 212 in order to control an injection area of the cooling water injected from the cooling water injection unit 220. It may be provided, a detailed description thereof will be described later with reference to FIG.
  • the cooling water injection unit 220 serves to spray the cooling water to the steel sheet (S).
  • the cooling water injected by the arrangement relationship with the charging unit 230 may be injected after charging.
  • the cooling water injection unit 220 of the plated steel sheet first cooling device 200 according to an embodiment of the present invention, at least a part of the ground is applied to the ground (ground) to apply the electrostatic charge to the charging unit 230 It can be characterized by discharging negative charges to the ground at the time or receiving negative charges from the ground.
  • the negative charge is discharged from the cooling water through the portion of the cooling water injection unit 220 grounded to the ground, or the negative charge is transferred to the cooling water to form a polarity It is charged.
  • the charging of the polarity is formed by the charging unit 230 is provided on one side of the cooling water injection unit 220.
  • the charging unit 230 of the plated steel sheet first cooling device 200 according to an embodiment of the present invention, the electrode unit 232 is applied to form an electric field by applying an electrostatic charge, the coolant spray Since the unit 220 includes the flow path part 221 through which the coolant moves, intersects the electrode part 232, the unit 220 can charge the coolant before injection to give polarity.
  • the electrode part 232 of the plated steel sheet first cooling device 200 may be disposed on upper and lower sides of the flow path part 221.
  • the first cooling apparatus 200 of the plated steel sheet of the present invention may include an injection pressure providing unit 224, wherein the injection pressure providing unit 224 is provided through the flow path part 221. 222 is provided to increase the injection force of the cooling water delivered to the nozzle unit 223.
  • the cooling water may be injected from the nozzle unit 223 only by the injection force by the flow of the cooling water
  • the air pressure providing unit 224 may be further provided to further increase the injection force of the cooling water.
  • the cooling water may be injected only by the injection pressure imparted by the injection pressure providing unit 224.
  • the cooling water injection unit 220 of the plated steel sheet first cooling device 200 communicates with the nozzle unit 223 and supplies gas to the cooling water to impart an injection pressure. It may include an injection pressure providing unit 224 to provide.
  • the gas (A) may be air
  • the air pressure providing unit 224 may be configured to receive the gas (A) from the outside through a pipe, the received gas (A) to the nozzle unit 223
  • a gas (A) flow path communicating with the nozzle unit 223 may be formed.
  • the charging unit 230 is configured to be sprayed in the charged state so that the cooling water has a polarity.
  • the charging unit 230 may be provided integrally with the cooling water injection unit 220, it is provided coupled to the first body unit (210).
  • the charging unit 230 has the passage portion 221 of the cooling water injection unit 220 penetrates and positioned behind the spraying direction of the cooling water rather than a part of the passage portion 221, thereby making the sprayed cooling water the same. It can be formed by spraying the polarity, a detailed description thereof will be described later.
  • the charging unit 230 of the plated steel sheet first cooling device 200 further includes an electrode support part 231 for supporting the electrode part 232, and the electrode support part. 231 may be installed in front of the first body unit 210 in which the first container portion 222 is formed, to be integrally or coupled with the first body unit 210. .
  • At least a part of the flow path part 221 of the coolant injection unit 220 through which the coolant flows is provided in front of the electrode part 232 based on the coolant injection direction, and provided in the flow path part 221.
  • the cooled water can be charged with the same polarity.
  • the flow path part 221 serves to transfer the sprayed coolant from the first container part 222 to the nozzle part 223.
  • the flow path part 221 to the electrode part 232. Is penetrated so that a portion is provided in front of the electrode part 232, so that the coolant moving to the flow path part 221 can be charged to give the same polarity.
  • the entire cooling water can be charged and sprayed with the same polarity.
  • the electrode support part 231 serves to support the electrode part 232 to be integrally formed with the cooling water injection unit 220.
  • the electrode support 231 may be coupled to the first body unit 210 to which the cooling water injection unit 220 is coupled, and may include the electrode portion 232 therein.
  • the electrode part 232 is connected to a high voltage generator PS for applying an external static charge, and thus a static charge is applied.
  • the high voltage generator PS is grounded to ground and the electrode part 232 is connected. By applying a high voltage in the connected state, the electrode unit 232 can maintain a state in which the electrostatic charge is applied to the positive electrode (+) or the negative electrode (-).
  • the high voltage generator PS discharges the negative charge present in the electrode part 232 through the ground.
  • the coolant provided in the flow path portion 221 adjacent to the electrode portion 232 is charged with a single polarity, the coolant thus charged is the adhesive force adhered to the steel sheet This increases the cooling capacity.
  • the cooling water is charged by the first container part 222 connected to the flow path part 221 grounded to the ground, and receives the negative charge from the ground, or discharges the negative charge to the ground, the cooling water in a single polarity It will be able to charge.
  • FIG 3 is a perspective view showing a plated steel sheet first cooling device 200 of the present invention.
  • the nozzle unit 223 of the plated steel sheet first cooling device 200 according to an embodiment of the present invention is In the width direction of the steel sheet (S), a plurality of pieces may be provided.
  • a plurality of nozzle portions 223 are provided in the width direction of the steel sheet (S). It is.
  • Figure 4 is a front view showing an embodiment in which the plated steel sheet first cooling device 200 of the present invention includes a first gas curtain portion 212, referring to this, plated steel sheet according to an embodiment of the present invention
  • the first cooling device 200 may include a first gas curtain part 212 provided at a periphery of the nozzle part 223 to guide the injected cooling water to the steel sheet S.
  • the first gas curtain part 212 is provided to shield the surroundings of the coolant from which the gas A is injected, thereby limiting the spray area of the coolant. You can do it.
  • the first gas curtain portion 212 may be a configuration included in the first body unit 210, but is not limited thereto. That is, the first gas curtain part 212 of the present invention may be provided when the cooling water injected in connection with the nozzle part 223 of the cooling water injection unit 220 is guided to the steel sheet.
  • the first gas curtain portion 212 may be provided in connection with a pipe that receives the gas (A) from the outside.
  • FIG. 1 is a front view showing the plating equipment of the present invention
  • Figure 10 (a) is a photograph showing a state in which the sequin pattern is coarse during cooling of the plating layer by the prior art
  • Figure 10 (b) is the present invention Is a photograph showing a state where the sequins pattern was refined at the time of cooling the plating layer.
  • the plating equipment according to another embodiment of the present invention is provided on the plating path 300 and the movement path of the plated steel sheet (S) discharged from the plating tank 300, the first cooling device of the plated steel sheet 200 may be included.
  • the plating bath 300 serves to coat the plating solution (L) on the steel sheet (S).
  • the plating bath 300 is provided with a plating solution L, such as a molten zinc solution, may be provided with a port roll 400 for guiding the movement of the steel sheet (S).
  • the plated steel sheet first cooling device 200 described above in the plating facility is cooled in the plated steel sheet second cooling device 100 to be described later to perform cooling on the plated layer of the partially solidified steel sheet (S) and the plating layer. This concludes the cooling down.
  • the first cooling device 200 of the plating equipment the plating solution (L) coated on the outer surface of the steel sheet (S) is at least lower than the melting temperature of the plating solution (L) Receiving the steel sheet (S) cooled to the temperature from the second cooling device 100, it can be characterized in that to perform cooling by spraying the cooling water imparted polarity to the steel sheet (S) by charging. .
  • the plated steel sheet first cooling device 200 is located behind the movement path of the steel plate (S) than the plated steel sheet second cooling device (100). That is, the steel sheet S passes through the plated steel sheet second cooling device 100 first after being discharged from the plating bath 300, and thereafter passes through the plated steel sheet first cooling device 200 secondly. Will be configured.
  • the movement of the steel sheet S is formed by forming a layout in which at least one path is changed, instead of forming a movement path in which the plating solution L is applied to the steel sheet S and cooling it. It is possible to miniaturize the plating equipment which should include the path.
  • the movement path of the steel sheet (S) may be formed in a path of the 'c' shape opened toward the ground.
  • the movement path of the steel sheet is connected to the first region, the first region in which the movement of the steel plate moves above the plating bath, the movement path of the steel sheet It is characterized in that it is provided in each of the second region and the third region which is connected to the second region to move horizontally to the ground, the movement path of the steel sheet moves downward.
  • the first cooling apparatus ( A water cooling device 600 may be further provided at the exit side of the 200.
  • the plating facility is provided after the movement path of the steel sheet (S) than the first cooling device 200, the plating solution (L) coated on the outer surface of the steel sheet (S) is When completely solidified by the first cooling device 200 may receive the steel sheet (S) from the first cooling device 200, it may include a water cooling device 600 for performing underwater cooling.
  • the water cooling device 600 supplies a cooling water to the steel sheet (S) and the cooling unit 610 for performing cooling and the drying unit 620 for drying the steel sheet (S) discharged from the water cooling unit 610. ) May be included.
  • the plating equipment of the present invention includes the plating bath 300 and the first cooling device 200, and is provided on the exit side from which the steel sheet S is discharged from the plating bath 300, and ultrasonic vibrations.
  • the cooling water to form a mist may further include a plated steel sheet second cooling device 100 for spraying the steel sheet (S) with the gas (A).
  • the plating facility of the present invention includes the plated steel sheet first cooling device 200 and the plated steel sheet second cooling device 100, thereby improving the cooling rate of the plated solution L coated steel plate S. Since it can be made, the sequin pattern which can be formed in plating solution L, such as a zinc solution, can be refined.
  • FIG. 10 (b) in the present invention, as shown in FIG. 10 (b), a cooling rate capable of miniaturizing a sequin pattern can be ensured, as shown in FIG. 10 (a). It is.
  • the cooling solidification time of the plating solution L coated on the steel sheet S can be shortened, thereby reducing the cooling line. Because of the short construction, the plating equipment can be miniaturized.
  • the plated steel sheet second cooling device 100 is a device for performing cooling in the initial stage when the steel plate S coated with the plating solution L is discharged from the plating bath 300, and is cooled to the uncondensed plating solution L. Will be performed.
  • the second cooling device 100 of the plating equipment according to an embodiment of the present invention, the steel sheet (S) discharged from the plating bath 300 at a temperature higher than the melting temperature of the plating solution (L) at least (S) Cooling to the plating solution (L) on the surface, and cooling the plating solution (L) to a temperature lower than the melting temperature of the plating solution (L) to deliver to the first cooling device (200). It can be characterized by.
  • the second cooling apparatus 100 transfers the steel sheet S to the first cooling apparatus 200 after the solidification of the plating solution L is performed to some extent, thereby providing the first cooling apparatus ( It is possible to prevent the formation of a pit mark in the plating layer by the cooling water used for cooling in 200).
  • the plated steel sheet second cooling device 100 when the cooling by the gas (A) at the beginning of the cooling for the steel plate (S) coated with the plating solution (L), together with the fine moisture particles formed by using ultrasonic waves By spraying, the cooling ability can be improved while preventing the formation of recessed pit marks in the unsolidified plating layer. The description thereof will be described later in detail with reference to FIGS. 5 to 8.
  • the plated steel sheet second cooling device 100 includes the filter unit 140
  • the plated steel sheet may be sprayed onto the plated layer by using a difference in moving inertia according to the size of the fog particles formed by the ultrasonic unit 130.
  • the size of the mist particles can be adjusted to further increase the efficiency of prevention of pit mark formation. The description thereof will be described later with reference to FIG. 9.
  • the plating equipment of the present invention is provided with an air knife 500 at a position between the plating bath 300 and the plated steel sheet second cooling device 100, and the plating solution coated in the plating bath 300. It can be configured to adjust the thickness of (L).
  • the plating facility according to an embodiment of the present invention, the plating bath 300 and the agent on the movement path of the steel sheet (S) to adjust the thickness of the plating solution (L) thinned on the steel sheet (S) It may include an air knife 500 provided between the two cooling apparatus (100).
  • FIG. 5 is a front view of a plated steel sheet second cooling device 100 of the present invention.
  • the plated steel plate second cooling device 100 according to an embodiment of the present invention is an uncondensed plating solution (L).
  • the second body unit 110 and the second body unit 110 provided on the movement path of the steel plate (S) coated on the outer surface, the gas injection for injecting gas (A) to the steel plate (S) Ultrasonic unit provided in the unit 120 and the second body unit 110 to form a cooling water in the fog to spray the steel sheet (S) along the gas (A) injected from the gas injection unit 120 ( 130).
  • the plated steel sheet second cooling device 100 of the present invention by spraying the cooling water mist formed by the ultrasonic unit 130 together, the uncondensed plating solution (L) at the time of cooling the plating solution (L) by the gas (A) It is possible to increase the cooling capacity while configuring to prevent the formation of a recessed pit mark.
  • the second body unit 110 serves as a body in which the gas injection unit 120 and the ultrasonic unit 130 are provided.
  • the gas (A) provided by the gas injection unit 120 and the cooling water mist provided by the ultrasonic unit 130 also serves to spray together the steel plate (S) coated with the plating solution (L).
  • the second body unit 110 may include a second frame portion 111, a slit nozzle portion 112, a second gas curtain portion 113, a detailed description thereof will be described with reference to FIGS. It will be described later with reference to 8.
  • the second body unit 110 in the plating bath 300 so that the plated steel sheet second cooling apparatus 100 of the present invention to cool the steel sheet (S) discharged from the plating bath 300 first
  • the non-coagulated plating solution L discharged is provided on the moving path of the coated steel sheet S.
  • the gas injection unit 120 serves to inject a gas (A) to cool the non-coagulated plating solution (L) coated on the steel sheet (S).
  • the gas injection unit 120 may include a gas supply unit 121, and a temperature control unit for adjusting the temperature of the gas A to low or high temperature in order to increase the cooling efficiency by the gas A injection. 122, which will be described in detail later with reference to FIG. 6.
  • the ultrasonic unit 130 serves to provide a cooling water mist to the gas (A) in order to increase the cooling capacity of the gas (A) injected from the gas injection unit (120).
  • the gas (A) may be air
  • the ultrasonic unit 130 forms the cooling water into mist by ultrasonic vibration
  • the gas (A) providing the mist formed in the gas injection unit 120.
  • the slit nozzle portion 112 of the second body unit 110 is sprayed to the plating solution (L) coated on the steel sheet (S).
  • the ultrasonic unit 130 may include a second container portion 131, the ultrasonic generator 132, the fog guide portion 133.
  • the ultrasonic unit 130 of the plated steel sheet second cooling device 100 is provided in the second body unit 110, the second container portion (10) provided with cooling water ( 131, which is provided inside the second container part 131, is provided on an upper side of the ultrasonic generator 132 and the second container part 131 that generate ultrasonic waves by vibration to form fog as the cooling water. It may include a mist guide portion 133 to guide the formed mist to the position where the steel sheet (S) is provided.
  • the second container part 131 is configured to provide a coolant to be formed as a fog when the ultrasonic generator 132 generates vibration, and is provided in the second body unit 110.
  • a pipe to which the coolant (W) is to be supplied from the outside may be connected to the second container part 131.
  • the ultrasonic generator 132 serves to form ultrasonic vibrations for forming the cooling water into fog, and is provided inside the second container part 131 provided with the cooling water.
  • the ultrasonic generator 132 is formed of a material such as metal, quartz, ceramics, and the like, which are electrically connected to a voltage source and change electrical energy supplied from the voltage source into vibration energy in order to form ultrasonic vibration.
  • the mist guide part 133 is formed by the mist of the cooling water provided to the second container part 131 by the ultrasonic vibration provided by the ultrasonic generator 132, it is to the slit nozzle part 112 It is to guide the movement.
  • the fog guide portion 133 is provided in a cap shape on the upper end of the second container portion 131, the hole is formed in the direction toward the slit nozzle portion 112, the peripheral portion of the hole A flange extending toward the slit nozzle part 112 is formed.
  • mist guide unit 133 and the slit nozzle unit 112 is provided with a filter unit 140 to be described later for adjusting the size of the mist particles, the mist particles provided to the slit nozzle unit 112 Will control the size of.
  • FIG. 6 is a front view illustrating an embodiment in which the temperature control unit 122 of the gas injection unit 120 is provided outside the gas supply unit 121 in the second cooling device 100 of the present invention.
  • the second body unit 110 receives the gas (A) from the outside
  • the gas supply unit 121 and the gas supply unit 121 to spray to the steel sheet (S) may include a temperature control unit 122 provided to adjust the temperature of the gas (A).
  • a temperature control unit 122 that can adjust the temperature of the gas (A) to low or high temperature.
  • the gas supply part 121 serves to provide the gas A to the slit nozzle part 112, and the gas supply part 121 may receive the high pressure gas A from the outside. To this end, the gas supply unit 121 may be connected to the pipe in order to receive the gas (A).
  • the gas A here may be air.
  • the temperature control unit 122 serves to control the temperature of the gas A provided by the gas supply unit 121, for example, to be provided as a cooling tube for forming the gas A at a low temperature. Can be.
  • the temperature control unit 122 is provided inside the gas supply unit 121, thereby directly contacting the gas (A) provided from the gas supply unit 121 to increase the temperature control efficiency of the gas (A).
  • FIG. 5 One example of this is shown in FIG. 5.
  • the temperature control unit 122 may be provided outside the gas supply unit 121. In this case, since the flow path of the gas A flowing inside the gas supply unit 121 is not blocked, The flow velocity of the gas A can be maintained. An example of this is shown in FIG. 6.
  • the region of the gas supply unit 121 in which the temperature control unit 122 is disposed may be provided as a size of an area in which heat exchange between the gas A and the temperature control unit 122 may be sufficiently performed.
  • the gas injection unit 120 may further include a gas amount adjusting unit 123 to adjust the amount of gas delivered from the outside to the gas supply unit 121.
  • the gas injection unit 120 of the plated steel sheet second cooling device 100 is provided in the gas supply unit 121, provided to adjust the flow rate of the gas delivered from the outside
  • the gas amount adjusting unit 123 may be included.
  • the gas amount adjusting unit 123 is provided to control the amount of gas injected from the slit nozzle portion 112 of the second body unit 110 to the steel sheet (S), of course, the ultrasonic unit In contrast to the amount of fog formed in 130, the cooling capacity is set to adjust the cooling solution of the steel plate (S) at the desired temperature.
  • FIG. 7 is a perspective view illustrating a plated steel sheet second cooling device 100 of the present invention, and referring to this, the second body unit 110 of the plated steel plate second cooling device 100 according to an embodiment of the present invention.
  • the gas injection unit Slit nozzle unit 112 provided with a width larger than the width of the steel sheet (S) at least so as to spray the gas (A) provided from the 120 and the mist provided by the ultrasonic unit 130 to the steel sheet (S).
  • the second body unit 110 includes the second frame part 111 and the slit nozzle part 112.
  • the gas A and the ultrasonic unit 130 provided by the gas injection unit 120 are provided.
  • the cooling water mist provided by) is to serve to spray together the steel plate (S) coated with the plating solution (L).
  • the second frame portion 111 is a basic configuration is provided with the gas injection unit 120, the ultrasonic unit 130, the slit nozzle portion 112 is a plating solution uncoagulated gas (A) and fog ( L) to spray onto the phase.
  • the slit nozzle part 112 is formed in a long hole shape having a width larger than the width of the steel sheet S, thereby uniformly injecting the gas (A) and mist particles in the width direction of the steel sheet (S) It is configured to uniformly perform cooling of the solidification plating solution (L).
  • FIG 8 is a front view showing an embodiment in which the second body unit 110 includes a second gas curtain portion 113 in the second cooling apparatus 100 of the plated steel sheet according to the present invention.
  • the second body unit 110 of the plated steel sheet second cooling device 100 according to an embodiment is provided in the periphery of the slit nozzle part 112, the gas (A) and the mist sprayed on the steel sheet It may include a second gas curtain portion 113 leading to (S).
  • the second body unit 110 includes the second gas curtain part 113, the gas A provided by the gas injection unit 120 and the cooling water mist provided by the ultrasonic unit 130.
  • the second body unit 110 When it is injected into the plating solution (L) coated on the steel sheet (S), it is for controlling the spraying position.
  • the second gas curtain portion 113 may be provided at the periphery of the slit nozzle portion 112, preferably may be provided in a form surrounding the periphery of the slit nozzle portion 112.
  • a pipe provided with a gas A from the outside may be formed, and the gas A may be air. have.
  • the gas (A) received from the outside from the peripheral portion of the slit nozzle unit 112 it is possible to control the path of the gas (A) and the mist particles sprayed from the slit nozzle unit (112).
  • FIG. 9 is a front view showing an operating state of the filter unit 140 in the plated steel sheet second cooling device 100 of the present invention, referring to this, the plated steel sheet second cooling device 100 according to an embodiment of the present invention.
  • the filter unit 140 may adjust the size of the mist particles to be sprayed to the plating layer by using a difference in the moving inertia force according to the size of the mist particles formed by the ultrasonic unit 130.
  • the filter unit 140 may be provided with a filter frame portion 141, the adjusting plate portion 142. That is, the filter unit 140 of the plated steel sheet second cooling device 100 according to an embodiment of the present invention is provided on the flow path of the fog formed in the ultrasonic unit 130, the second body unit Filter frame unit 141 is provided coupled to the 110, provided in the filter frame unit 141, the flow path of some of the fog particles are provided to change and the other fog particles are provided to collide with the moving inertia force It may include a portion 142.
  • the filter frame unit 141 is a basic frame of the filter unit 140, which is provided in the second body unit 110, more specifically, the mist discharged from the ultrasonic unit 130 is discharged It is provided between the guide portion 133 and the slit nozzle portion 112.
  • the adjusting plate part 142 is provided in the filter frame part 141 and is configured to partially change the flow path of the fog particles flowing through the filter frame part 141.
  • the throttle plate 142 is configured to partially change the flow path of the fog particles, particles (be) having a relatively large moving inertia force among the flowing fog particles do not change the flow path, or partially flow. By changing only the path, it will collide with the control plate 142.
  • the collided particles (be) do not move to the slit nozzle portion 112, and as the cumulative particle size increases as the accumulation plate portion 142 is gradually dropped to the second vessel portion 131. .
  • the particles se of relatively small moving inertia force among the flowing mist particles do not collide with the throttle plate 142 as the flow path is changed enough to not collide with the throttle plate 142.
  • the slit nozzle unit 112 can be moved.
  • the moving inertia force is a value proportional to the mass of the particles, the size of the mist particles to be provided to the slit nozzle unit 112 can be adjusted.
  • control plate 142 may be provided in plurality in the filter frame portion 141 at a predetermined interval.
  • the filter frame portion 141 may be provided with a plurality of predetermined intervals.
  • control plate 142 of the plated steel sheet second cooling device 100 may be characterized by being provided obliquely in the flow path of the mist particles.
  • control plate is provided obliquely in the flow path of the fog particles.
  • the rate of change of the flow path of the mist particles is larger, so that only relatively small particles pass through the slit nozzle part 112, and if the oblique degree is small, the fog is small. Since the rate of change of the flow path of the particles is small, it can be controlled to pass to the relatively large particles to be supplied to the slit nozzle portion 112.
  • the oblique degree may be configured to replace the other filter unit 140, but may be configured to be connected to the angle control motor to adjust the angle of the control panel.
  • Plating steel sheet cooling method is a plating process of coating the plating solution (L) on the steel sheet (S), and the wiping to adjust the thickness of the plating solution (L) thinned on the steel sheet (S) And a cooling step, wherein the cooling step is performed by spraying cooling water onto the steel sheet S, and cooling the sprayed water in a charged state.
  • the pre-cooling step for performing cooling for the steel plate (S) coated with the plating solution (L) is cooled in the pre-cooling step It may include a post-cooling step of cooling by spraying the cooling water given the same polarity by the charging to the plated steel sheet (S).
  • the plating process is performed by moving the plating bath 300 while the steel sheet S is supported by the pot roll 400 or the like.
  • the plating solution L may be coated on the outer surface of the steel sheet S while the steel sheet S passes through the plating bath 300 in which the plating solution L is contained.
  • the thickness of the plating solution L applied to the steel plate S by spraying gas such as air may be used.
  • the pre-cooling step is a step of cooling the steel sheet S discharged from the plating bath 300 and passing through the wiping process, and still in the molten state by using the second cooling device 100. Since cooling is performed on the plating solution L, the gas is sprayed in order to prevent the formation of the recessed pit marks during solidification, and in addition, micronized form of the cooling water by ultrasonic vibration in order to increase the cooling capacity. The mist is sprayed together.
  • the pre-cooling step of the plated steel sheet cooling method at least for the plating solution (L) on the surface of the steel sheet (S) formed at a temperature higher than the melting temperature of the plating solution (L) Cooling is performed by spraying the gas and the mist formed by ultrasonic vibration together, and cooling the plating solution (L) at a temperature lower than the melting temperature of the plating solution (L) to be delivered to the post-cooling step.
  • Cooling is performed by spraying the gas and the mist formed by ultrasonic vibration together, and cooling the plating solution (L) at a temperature lower than the melting temperature of the plating solution (L) to be delivered to the post-cooling step.
  • the pit mark may be prevented from being formed while the plating solution L is solidified while increasing the cooling ability than when only gas is injected.
  • the post-cooling step is not spraying the mist miniaturized by the ultrasonic vibration, if the plating solution (L) is not performed after solidification, the pit mark on the plating layer formed by the plating solution (L) In the precooling step, the plating solution L should be cooled to a temperature lower than the melting temperature of the plating solution L and transferred to the post-cooling step.
  • the post-cooling step is to cool the plating solution (L) and the steel sheet (S) first by using the second cooling device 100 in the pre-cooling step, the second cooling using the first cooling device (200)
  • the plating solution L and the steel sheet S are cooled.
  • the post-cooling step since the plated layer cooled to a temperature lower than at least the melting temperature of the plating solution L is transferred to the pre-cooling step to perform cooling, it is necessary to consider the problem of forming a pit mark on the plated layer. It is possible to cool while spraying without minimizing the cooling water.
  • the post-cooling step of the plated steel sheet cooling method receiving the plated steel sheet cooled to a temperature lower than the melting temperature of the plating solution at least in the pre-cooling step, with respect to the steel sheet Cooling may be performed by spraying cooling water imparted with polarity by charging.

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Abstract

A plated steel plate first cooling device according to an embodiment of the present invention comprises: a cooling water spraying unit for spraying cooling water to a plated steel plate; and an electrifying unit arranged on at least one side of the cooling water spraying unit so as to electrify the cooling water. The plated steel plate first cooling device according to an embodiment of the present invention may be characterized in that the cooling water spraying unit is installed such that the cooling water is sprayed while being electrified by the electrifying unit.

Description

도금강판 제1냉각장치, 도금설비 및 도금강판 냉각방법Plated steel sheet first cooling device, plating equipment and plated steel sheet cooling method
본 발명은 도금강판 제1냉각장치, 도금설비 및 도금강판 냉각방법에 관한 것이다.The present invention relates to a plated steel sheet first cooling device, plating equipment and plated steel sheet cooling method.
철강제품의 제조 공정에서는 연속도금공정이 수행되어 고객사의 필요에 따른 도금강판을 생산하게 된다.In the manufacturing process of steel products, a continuous plating process is performed to produce plated steel sheets according to the needs of customers.
이러한 연속도금공정에서는 아연 등의 도금용액이 제공되는 도금조를 통과한 강판 표면에 부착된 용융 상태의 도금액을 냉각시켜서 도금강판을 생산하게 된다.In this continuous plating process, the plating solution in the molten state attached to the surface of the steel sheet passed through the plating bath provided with a plating solution such as zinc is cooled to produce a plated steel sheet.
즉, 도금조를 통과한 강판에는 양쪽 면에 과도하게 도금액이 부착되어 있으므로, 에어나이프(air knife)를 이용하여 적절한 두께의 도금층으로 형성하고, 이후에는 약 460℃ 이상의 미응고된 아연 용액을 냉각장치를 사용하여 응고시켜 줌에 따라 강판의 표면에 충분한 강도를 갖는 도금층이 형성하여 도금강판을 생산하게 되는 것이다.That is, since the plating solution is excessively attached to both surfaces of the steel sheet passing through the plating bath, an air knife is used to form a plating layer having an appropriate thickness, and then the unsolidified zinc solution of about 460 ° C. or more is cooled. As the device solidifies, a plated layer having sufficient strength is formed on the surface of the steel sheet to produce a plated steel sheet.
그런데, 이러한 도금용액에 대한 냉각이 빠르게 진행되지 않으면 도금층 표면에 발생되는 결정성장 무늬인 스팽글 무늬를 미세화시킬 수 없어 도금품질에 문제를 발생시키게 된다.However, if the cooling of the plating solution does not proceed rapidly, the sequin pattern, which is a crystal growth pattern generated on the surface of the plating layer, cannot be refined, which causes problems in plating quality.
한편, 상기 도금층을 응고시키기 위하여 미응고된 도금용액은 에어쿨러(Air cooler) 등 가스를 이용하여 냉각하였고, 일부 응고되어 어느 정도 강도를 확보한 도금층은 냉각수를 분사하는 냉각노즐에 의해서 냉각을 수행하였다.Meanwhile, in order to solidify the plating layer, the non-solidified plating solution was cooled by using a gas such as an air cooler, and the plating layer, which was partially solidified and secured to some extent, was cooled by a cooling nozzle spraying cooling water. It was.
이와 같이, 도금용액이 입혀진 강판에 대한 냉각 초기에 에어쿨러를 이용하여 냉각하는 이유는, 미응고 상태인 도금층에 냉각수의 물방울을 분사하게 되면, 도금층 표면에 움푹 패인 피트마크(pit mark)를 유발하기 때문이다.As such, the reason for cooling by using an air cooler at the initial stage of cooling the steel plate coated with the plating solution is that spraying the water droplets of the cooling water onto the uncoagulated plating layer causes a pit mark in the surface of the plating layer. Because.
즉, 도금층의 냉각 초기에는 가스를 분사하여 냉각을 시켜줌으로써 도금강판의 표면 결함의 발생을 방지하게 된다.That is, in the initial stage of the cooling of the plating layer, the gas is injected by cooling to prevent the occurrence of surface defects of the plating steel sheet.
또한, 상기 에어쿨러에 의해서 일부 응고되어 어느 정도 강도를 확보한 도금층은 냉각노즐에서 냉각수를 분사하여 완전히 응고되게 되는데, 이때 상기 냉각수가 상기 도금층을 냉각시키려면 도금층에 부착되어 도금층의 열을 전달받아야 하는데, 분사된 냉각수 중 일부만이 도금층에 부착됨에 따라 냉각능이 저하되는 문제가 있다.In addition, the plating layer which is partially solidified by the air cooler to secure a certain degree of strength is completely solidified by spraying cooling water from a cooling nozzle. In this case, to cool the plating layer, the cooling water must be attached to the plating layer to receive heat from the plating layer. However, as only a part of the sprayed cooling water is attached to the plating layer, there is a problem that the cooling ability is lowered.
이와 같이, 도금층 응고 초기에 가스를 활용하여 냉각하는 방식은 냉각수를 활용한 냉각 방식에 비하여 냉각속도가 느리고, 냉각수의 분사에 의한 냉각 방식의 경우에도 일부 냉각수만이 도금층에 부착되기 때문에 냉각능이 저하됨으로써, 저속 냉각에 의한 도금층의 아연 응고 무늬인 스팽글이 지나치게 커지는 문제가 발생하게 된다. As such, the cooling method using gas at the initial stage of the solidification of the plating layer is slower than the cooling method using the cooling water, and even in the case of the cooling method by spraying the cooling water, only some cooling water is attached to the plating layer, thereby decreasing the cooling capacity. Thereby, the problem that the sequin which is the zinc solidification pattern of the plating layer by low speed cooling becomes large becomes large.
즉, 도 10의 (a)에 제시된 스팽글 무늬가 도금강판 표면에 형성되면 도금제품의 선영도는 물론 광택도를 떨어뜨리게 되어 자동차 외판재나 가전제품의 외장재와 같은 고급 제품에 사용할 수 없게 된다.That is, when the sequins pattern shown in (a) of FIG. 10 is formed on the surface of the plated steel sheet, the degree of glossiness and glossiness of the plated product may be lowered, and thus, the sequin pattern may not be used in high-end products such as automobile exterior materials or exterior materials of home appliances.
또한, 충분히 냉각되지 못한 도금층이 이송롤과 접촉하는 경우에 도금액의 일부가 롤에 부착되고, 이로 인해 강판의 표면에 폭방향의 줄 무늬인 픽업 마크(pick-up mark)가 발생되어 표면 결함의 요인이 되는 문제도 있다.In addition, when the plating layer that is not sufficiently cooled contacts the feed roll, a part of the plating liquid adheres to the roll, which causes a pick-up mark, which is a stripe pattern in the width direction, on the surface of the steel sheet, thereby causing surface defects. There is also a problem.
더하여, 도금층에 대한 저속 냉각에 의하면, 연속하여 도금강판을 생산하는 설비에서는 도금강판의 충분한 냉각 시간을 확보하여야 하며, 이에 따라 냉각 라인의 길이가 길어짐에 따라 설비를 대형화되는 한계도 있다.In addition, according to the low-speed cooling of the plated layer, in a facility that continuously produces a plated steel sheet, a sufficient cooling time of the plated steel sheet must be ensured. As a result, the length of the cooling line increases, thereby limiting the size of the facility.
본 발명의 목적은 강판에 입혀진 도금층의 냉각 속도를 높임으로써, 도금강판의 품질을 향상시키는 것은 물론, 설비의 대형화를 방지하는 도금강판 제1냉각장치, 도금설비 및 도금강판 냉각방법을 제공하는 것이다.It is an object of the present invention to improve the quality of plated steel sheets by increasing the cooling rate of the plated layer coated on the steel sheet, as well as to provide a plated steel sheet first cooling device, plating equipment and plated steel sheet cooling method for preventing the enlargement of equipment. .
본 발명의 일 실시예에 따른 도금강판 제1냉각장치는, 도금강판에 냉각수를 분사하는 냉각수분사유닛, 상기 냉각수분사유닛의 적어도 일측에 배치되어, 상기 냉각수를 대전하는 대전유닛을 포함하며, 상기 냉각수분사유닛은, 상기 냉각수가 상기 대전유닛에 의해 대전된 상태로 분사되도록 설치된 것을 특징으로 할 수 있다.The first cooling apparatus of a plated steel sheet according to an embodiment of the present invention includes a cooling water injection unit for injecting cooling water onto the plated steel sheet, and a charging unit disposed on at least one side of the cooling water injection unit to charge the cooling water. The cooling water injection unit may be installed so that the cooling water is sprayed in a charged state by the charging unit.
또한, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치의 상기 냉각수분사유닛은, 냉각수를 수용하는 제1용기부, 상기 제1용기부와 연결되며, 상기 냉각수가 이동하는 유로부 및 상기 유로부와 연결되어 상기 제1용기부에서 냉각수를 전달받으며, 상기 도금강판으로 상기 냉각수를 분사하는 노즐부를 포함할 수 있다.In addition, the cooling water injection unit of the plated steel sheet first cooling apparatus according to an embodiment of the present invention, the first container portion for receiving the cooling water, the flow path portion is connected to the first container portion, the cooling water is moved and the Connected to the flow path portion may receive a coolant from the first container portion, and may include a nozzle unit for spraying the coolant to the plated steel sheet.
또한, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치의 상기 제1용기부는, 그라운드에 접지되는 것을 특징으로 할 수 있다.In addition, the first vessel portion of the plated steel sheet first cooling device according to an embodiment of the present invention may be characterized in that the ground is grounded.
또한, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치의 상기 대전유닛은, 정전하가 인가되어 전기장을 형성하는 전극부를 포함하고, 상기 유로부는 상기 전극부와 교차하도록 배치되는 것을 특징으로 할 수 있다.In addition, the charging unit of the plated steel sheet first cooling device according to an embodiment of the present invention, characterized in that it comprises an electrode portion is applied to the electrostatic charge to form an electric field, the flow path portion is arranged to intersect the electrode portion. can do.
또한, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치의 상기 전극부는, 상기 유로부의 상하측에 배치되는 것을 특징으로 할 수 있다.In addition, the electrode portion of the plated steel sheet first cooling device according to an embodiment of the present invention may be characterized in that it is disposed on the upper and lower sides of the flow path portion.
또한, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치의 상기 대전유닛은, 상기 전극부를 지지하는 전극지지부를 더 포함하고, 상기 전극지지부는, 상기 제1용기부가 형성되어 있는 제1바디유닛의 전방에, 상기 제1바디유닛과 일체로 또는 결합되도록 설치되는 것을 특징으로 할 수 있다.In addition, the charging unit of the plated steel sheet first cooling apparatus according to an embodiment of the present invention further comprises an electrode support portion for supporting the electrode portion, the electrode support portion, the first body is formed with the first container portion In front of the unit, it may be characterized in that it is installed to be integral with or coupled to the first body unit.
또한, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치의 상기 노즐부는, 상기 냉각수를 액적 형태로 분무하는 것을 특징으로 할 수 있다.In addition, the nozzle portion of the plated steel sheet first cooling apparatus according to an embodiment of the present invention may be characterized in that the sprayed cooling water in the form of droplets.
또한, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치의 상기 노즐부는, 상기 도금강판의 폭 방향으로 복수 개가 구비되는 것을 특징으로 할 수 있다.In addition, the nozzle portion of the plated steel sheet first cooling apparatus according to an embodiment of the present invention, it may be characterized in that a plurality is provided in the width direction of the plated steel sheet.
또한, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치의 상기 냉각수분사유닛은, 상기 노즐부와 연통되며, 상기 냉각수에 분사압을 부여하도록 가스를 제공하는 분사압제공부를 포함할 수 있다.In addition, the cooling water injection unit of the plated steel sheet first cooling device according to an embodiment of the present invention, may be in communication with the nozzle portion, may include an injection pressure providing unit for providing a gas to give the injection pressure to the cooling water. .
또한, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치의 상기 노즐부의 주변부에 구비되며, 분사되는 상기 냉각수를 상기 강판으로 유도하는 제1가스커튼부를 더 포함할 수 있다.In addition, the plated steel sheet according to an embodiment of the present invention is provided on the periphery of the nozzle portion of the first cooling device, and may further include a first gas curtain portion for inducing the injected cooling water to the steel sheet.
본 발명의 다른 실시예에 따른 도금설비는 도금조 및 상기 도금조에서 배출된 도금강판의 이동 경로 상에 제공되는 상기 도금강판 제1냉각장치를 포함할 수 있다.Plating equipment according to another embodiment of the present invention may include a plating bath and the first cooling device for the plated steel sheet provided on the movement path of the plated steel sheet discharged from the plating bath.
또한, 본 발명의 다른 실시예에 따른 도금설비는 상기 도금조와 상기 제1냉각장치 사이의 상기 강판 이동 경로 상에 구비되는 도금강판 제2냉각장치를 포함할 수 있다.In addition, the plating facility according to another embodiment of the present invention may include a second cooling device plated steel sheet provided on the steel plate moving path between the plating bath and the first cooling device.
또한, 본 발명의 다른 실시예에 따른 도금설비의 상기 제2냉각장치는, 초음파 진동에 의해서 냉각수를 안개로 형성하여 가스와 함께 상기 강판에 분사하는 것을 특징으로 할 수 있다.In addition, the second cooling device of the plating equipment according to another embodiment of the present invention may be characterized in that the cooling water to form a mist by ultrasonic vibration and spraying the steel sheet with gas.
또한, 본 발명의 다른 실시예에 따른 도금설비의 상기 제2냉각장치는, 상기 강판으로 가스를 분사하는 가스분사유닛, 냉각수를 안개로 형성하여 상기 가스분사유닛에서 분사되는 가스를 따라 상기 강판에 분사시키는 초음파유닛 및 상기 초음파유닛에서 형성된 안개 및 상기 가스분사유닛에서 분사되는 가스의 이동 경로 상에 구비되는 필터유닛을 포함할 수 있다.In addition, the second cooling device of the plating equipment according to another embodiment of the present invention, the gas injection unit for injecting gas into the steel sheet, forming a cooling water in the fog to the steel sheet along the gas injected from the gas injection unit It may include an ultrasonic wave unit for injecting and a mist formed in the ultrasonic unit and a filter unit provided on the movement path of the gas injected from the gas injection unit.
또한, 본 발명의 다른 실시예에 따른 도금설비의 상기 필터유닛은, 상기 강판에 분사될 안개 입자의 크기를 조정하는 것을 특징으로 할 수 있다.In addition, the filter unit of the plating equipment according to another embodiment of the present invention may be characterized in that to adjust the size of the mist particles to be sprayed on the steel sheet.
또한, 본 발명의 다른 실시예에 따른 도금설비의 상기 필터유닛은, 상기 초음파유닛에서 형성된 안개의 유동경로 상에 제공되는 필터프레임부 및 상기 필터프레임부에 구비되며, 일부 안개 입자의 유동 경로는 변경하게 구비되고 나머지 안개 입자는 이동 관성력에 의해 충돌하게 구비되는 조절판부를 포함할 수 있다.In addition, the filter unit of the plating equipment according to another embodiment of the present invention, the filter frame portion and the filter frame portion provided on the flow path of the mist formed in the ultrasonic unit is provided, the flow path of some mist particles The remaining fog particles may include a throttle plate provided to collide by the moving inertia force.
또한, 본 발명의 다른 실시예에 따른 도금설비의 상기 조절판부는, 상기 필터프레임부에 복수 개가 일정 간격으로 구비되고, 상기 안개 입자의 유동 경로에 비스듬하게 구비되는 것을 특징으로 할 수 있다.In addition, the control plate of the plating equipment according to another embodiment of the present invention, the filter frame portion is provided in a plurality at regular intervals, it may be characterized in that it is provided obliquely in the flow path of the mist particles.
본 발명의 또 다른 실시예에 따른 도금강판 냉각방법은 강판에 도금용액을 입히는 도금 공정과, 상기 강판에 뭍은 도금용액의 두께를 조정하는 와이핑 공정과, 냉각 공정을 포함하고, 상기 냉각 공정은, 상기 강판에 냉각수를 분사하여 냉각하되, 상기 냉각수는 대전된 상태로 분사하는 것을 특징으로 할 수 있다.The method for cooling a plated steel sheet according to another embodiment of the present invention includes a plating process of coating a plating solution on a steel sheet, a wiping process of adjusting the thickness of the plating solution immersed on the steel sheet, and a cooling process. Silver, but cooling by spraying the cooling water to the steel sheet, the cooling water may be characterized in that the sprayed in a charged state.
또한, 본 발명의 또 다른 실시예에 따른 도금강판 냉각방법의 상기 냉각 공정은, 도금용액이 입혀진 강판에 대하여 냉각을 수행하는 선냉각단계 및 상기 선냉각단계에서 냉각된 강판에 대하여 대전에 의해 동일한 극성이 부여된 냉각수를 분무하여 냉각하는 후냉각단계를 포함할 수 있다.In addition, the cooling process of the plated steel sheet cooling method according to another embodiment of the present invention, the pre-cooling step of performing the cooling for the steel plate coated with the plating solution and the same by the charging of the steel sheet cooled in the pre-cooling step It may include a post-cooling step of cooling by spraying the cooling water imparted polarity.
본 발명의 도금강판 제1냉각장치, 도금설비 및 도금강판 냉각방법은 강판에 입혀진 도금층의 냉각 속도를 높임으로써, 도금강판의 품질을 향상시키는 것은 물론, 설비의 대형화를 방지할 수 있는 이점이 있다.The plated steel sheet first cooling device, the plating equipment, and the plated steel sheet cooling method of the present invention increase the cooling rate of the plated layer coated on the steel sheet, thereby improving the quality of the plated steel sheet and preventing the enlargement of equipment. .
더하여, 도금용액이 입혀진 강판에 대한 냉각 초기에 가스에 의한 냉각을 할 때, 초음파를 이용하여 형성된 미세 수분 입자를 함께 분사함으로써, 미응고 도금층에 움푹 패인 피트마크가 형성되는 것을 방지하면서도 냉각능을 높일 수 있는 효과가 있다.In addition, when cooling by a gas in the initial stage of cooling on the steel plate coated with plating solution, by spraying together the fine moisture particles formed by using ultrasonic waves, the cooling ability is prevented while forming a pit mark in the uncoagulated plating layer. It can increase the effect.
또한, 외면에 입혀진 도금용액이 일부 응고된 강판에 대한 냉각을 위해 냉각수가 분사될 때, 냉각수를 대전시키면서 분사하기 때문에, 분사되는 냉각수에 대한 대전 효율을 높일 수 있으므로, 일부 응고 도금층에 대한 냉각수 부착율을 높일 수 있어, 냉각수의 분사에 따른 냉각효율을 높일 수 있게 된다.In addition, since the cooling solution is injected while the cooling water is injected to cool the partially solidified steel plate, the coating solution coated on the outer surface is charged while charging the cooling water, thereby increasing the charging efficiency with respect to the injected cooling water. It is possible to increase the rate, it is possible to increase the cooling efficiency according to the injection of the cooling water.
도 1은 본 발명의 도금설비를 도시한 정면도이다.1 is a front view showing a plating facility of the present invention.
도 2는 본 발명의 도금설비에서 도금강판 제1냉각장치를 도시한 정면도이다.Figure 2 is a front view showing a plated steel sheet first cooling device in the plating equipment of the present invention.
도 3은 본 발명의 도금설비에서 도금강판 제1냉각장치를 도시한 사시도이다.Figure 3 is a perspective view showing a plated steel sheet first cooling device in the plating equipment of the present invention.
도 4는 본 발명 도금설비의 도금강판 제1냉각장치이 제1가스커튼부를 포함하는 실시예를 도시한 정면도이다.Figure 4 is a front view showing an embodiment in which the plated steel sheet first cooling device of the present invention plating apparatus comprises a first gas curtain portion.
도 5는 본 발명의 도금설비에서 도금강판 제2냉각장치를 도시한 정면도이다.5 is a front view showing a plated steel sheet second cooling device in the plating equipment of the present invention.
도 6은 본 발명 도금설비의 도금강판 제2냉각장치에서 가스분사유닛의 기온조절부가 가스공급부의 외부에 구비된 실시예를 도시한 정면도이다.6 is a front view showing an embodiment in which the temperature control unit of the gas injection unit is provided outside the gas supply unit in the second cooling device of the plating apparatus of the present invention plating equipment.
도 7은 본 발명의 도금설비에서 도금강판 제2냉각장치를 도시한 사시도이다.7 is a perspective view showing a second plated steel cooling apparatus in the plating equipment of the present invention.
도 8은 본 발명 도금설비의 도금강판 제2냉각장치에서 제2바디유닛이 제2가스커튼부를 포함하는 실시예를 도시한 정면도이다.8 is a front view showing an embodiment in which the second body unit includes a second gas curtain part in the second cooling apparatus of the plated steel sheet of the plating apparatus of the present invention.
도 9는 본 발명 도금설비의 도금강판 제2냉각장치에서 필터유닛의 작동 상태를 도시한 정면도이다.9 is a front view showing an operating state of the filter unit in the plated steel sheet second cooling apparatus of the present invention plating equipment.
도 10은 종래기술에 의해 도금층 냉각시에 스팽글 무늬가 조대화된 상태와 본 발명에 의해서 도금층 냉각시에 스팽글 무늬가 미세화된 상태를 나타낸 사진이다.10 is a photograph showing a state in which a sequins pattern is coarsened when the plating layer is cooled by the prior art and a state where the sequins pattern is fine when the plating layer is cooled by the present invention.
이하에서는 도면을 참조하여 본 발명의 구체적인 실시예를 상세하게 설명한다. 다만, 본 발명의 사상은 제시되는 실시예에 제한되지 아니하고, 본 발명의 사상을 이해하는 당업자는 동일한 사상의 범위 내에서 다른 구성요소를 추가, 변경, 삭제 등을 통하여, 퇴보적인 다른 발명이나 본 발명 사상의 범위 내에 포함되는 다른 실시예를 용이하게 제안할 수 있을 것이나, 이 또한 본원 발명 사상 범위 내에 포함된다고 할 것이다.Hereinafter, with reference to the drawings will be described in detail a specific embodiment of the present invention. However, the spirit of the present invention is not limited to the embodiments presented, and those skilled in the art who understand the spirit of the present invention may deteriorate other inventions or the present invention by adding, modifying, or deleting other elements within the scope of the same idea. Other embodiments that fall within the scope of the inventive concept may be readily proposed, but they will also be included within the scope of the inventive concept.
또한, 각 실시예의 도면에 나타나는 동일한 사상의 범위 내의 기능이 동일한 구성요소는 동일한 참조부호를 사용하여 설명한다.In addition, the components with the same functions within the scope of the same idea shown in the drawings of each embodiment will be described using the same reference numerals.
본 발명은 강판(S)에 입혀진 도금층의 냉각 속도를 높임으로써, 도금강판(S)의 품질을 향상시키는 것은 물론, 설비의 대형화를 방지할 수 있다.By increasing the cooling rate of the plated layer coated on the steel sheet (S), the present invention can not only improve the quality of the plated steel sheet (S) but also prevent the enlargement of equipment.
도면을 참조하여 설명하면, 도 2는 본 발명의 도금강판 제1냉각장치(200)를 도시한 정면도로서, 이를 참조하면, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치(200)는, 도금강판(S)에 냉각수를 분사하는 냉각수분사유닛(220), 상기 냉각수분사유닛(220)의 적어도 일측에 배치되어, 상기 냉각수를 대전하는 대전유닛(230)을 포함하며, 상기 냉각수분사유닛(220)은, 상기 냉각수가 상기 대전유닛(230)에 의해 대전된 상태로 분사되도록 설치된 것을 특징으로 할 수 있다.Referring to the drawings, Figure 2 is a front view showing a plated steel sheet first cooling device 200 of the present invention, referring to this, plated steel sheet first cooling device 200 according to an embodiment of the present invention And a cooling water spraying unit 220 for spraying cooling water onto the plated steel sheet S, and a charging unit 230 disposed on at least one side of the cooling water spraying unit 220 to charge the cooling water. 220 may be installed so that the cooling water is injected in a state charged by the charging unit 230.
이와 같이 본 발명의 도금강판 제1냉각장치(200)는 상기 냉각수를 대전된 상태에서 분사할 수 있다.As described above, the plated steel sheet first cooling device 200 may spray the cooling water in a charged state.
특히, 상기 냉각수분사유닛(220)이 상기 대전유닛(230)의 일측에 구비됨으로써, 상기 냉각수가 대전된 상태에서 분사되기 때문에, 분사되는 냉각수가 동일한 극성으로 대전됨에 따라 상기 냉각수의 대전 효율을 높일 수 있기 때문에 강판(S) 상의 도금층에 대한 냉각수의 부착율을 높여서 냉각효율을 높일 수 있게 된다.In particular, since the cooling water injection unit 220 is provided on one side of the charging unit 230, the cooling water is injected in a charged state, thereby increasing the charging efficiency of the cooling water as the injected cooling water is charged with the same polarity. Since it is possible to increase the adhesion rate of the cooling water to the plating layer on the steel sheet (S) it is possible to increase the cooling efficiency.
또한, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치(200)의 상기 냉각수분사유닛(220)은, 냉각수를 수용하는 제1용기부(222), 상기 제1용기부(222)와 연결되며, 상기 냉각수가 이동하는 유로부(221) 및 상기 유로부(221)와 연결되어 상기 제1용기부(222)에서 냉각수를 전달받으며, 상기 도금강판으로 상기 냉각수를 분사하는 노즐부(223)를 포함할 수 있다.In addition, the cooling water injection unit 220 of the plated steel sheet first cooling device 200 according to an embodiment of the present invention, the first vessel portion 222, the first vessel portion 222 and receiving the cooling water The nozzle unit 223 connected to the flow path part 221 and the flow path part 221 to which the coolant moves, receives the coolant from the first container part 222, and sprays the coolant to the plated steel sheet. ) May be included.
여기서, 상기 유로부(221)는 분사되는 냉각수를 상기 제1용기부(222)에서 상기 노즐부(223)로 전달하는 역할을 하게 되는데, 이때 상기 유로부(221)의 일부는 상기 대전유닛(230)를 관통하여 상기 대전유닛(230)보다 분사 방향의 전방에 구비됨으로써, 분사되는 냉각수를 동일 전극으로 대전시켜 분사시킬 수 있다. 이에 대한 자세한 설명은 후술한다.Here, the flow path part 221 serves to transfer the sprayed coolant from the first container part 222 to the nozzle part 223, wherein a part of the flow path part 221 is the charging unit ( By being penetrated through the 230 to the front of the charging direction than the charging unit 230, it is possible to charge the sprayed cooling water to the same electrode to be injected. Detailed description thereof will be described later.
그리고, 상기 제1용기부(222)는 분사될 냉각수가 제공되는 구성으로써, 외부에서 냉각수(W)를 전달받기 위해서 공급배관과 연결될 수 있으며, 저장된 일부의 냉각수는 드레인관을 통하여 배출될 수도 있다. 다만, 대부분의 저장된 냉각수는 유로부(221)를 통하여 상기 노즐부(223)로 전달되어 강판(S)에 분사되게 된다.In addition, the first container part 222 is configured to provide the coolant to be injected, and may be connected to the supply pipe to receive the coolant W from the outside, and some of the stored coolant may be discharged through the drain pipe. . However, most of the stored cooling water is delivered to the nozzle part 223 through the flow path part 221 to be sprayed onto the steel sheet S.
여기서, 상기 제1용기부(222)는 그라운드(ground)에 접지될 수 있으며, 도체의 소재로 구성됨으로써, 상기 냉각수의 대전시에 그라운드에서 음전하를 받아들이거나, 음전하를 배출하는 등의 기능을 수행할 수 있게 된다.In this case, the first container part 222 may be grounded to ground, and may be formed of a material of a conductor to perform a function such as receiving negative charges from the ground or discharging negative charges when the coolant is charged. It becomes possible.
즉, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치(200)의 상기 제1용기부(222)는, 그라운드에 접지되는 것을 특징으로 할 수 있다.That is, the first container portion 222 of the plated steel sheet first cooling device 200 according to an embodiment of the present invention may be grounded.
특히, 상기 제1용기부(222) 내부의 냉각수들은 후술할 전극부(232)에 의해서 전부 동일한 극성으로 대전되기 때문에, 냉각수의 분사 중간에 대전 극성이 상쇄되는 등의 문제를 방지할 수 있게 된다.In particular, since the cooling water inside the first container part 222 is all charged by the same polarity by the electrode part 232 which will be described later, it is possible to prevent a problem such that the charging polarity is canceled in the middle of the injection of the cooling water. .
상기 노즐부(223)는 상기 제1용기부(222)에서 유로부(221)를 통하여 전달된 냉각수를 강판(S)으로 분사하는 역할을 하게 된다.The nozzle unit 223 serves to spray the cooling water transferred from the first container part 222 through the flow path part 221 to the steel sheet (S).
여기서, 상기 노즐부(223)는 분사될 냉각수의 분사 유로가 점점 작아지는 형상으로 홀을 구비하여 분사될 냉각수의 분사 속도를 높이게 구성될 수도 있다.Here, the nozzle unit 223 may be configured to increase the injection speed of the cooling water to be sprayed by having a hole in the shape that the injection flow path of the cooling water to be injected becomes smaller.
그리고, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치(200)의 상기 노즐부(223)는, 상기 냉각수를 액적 형태로 분무하는 것을 특징으로 할 수 있다.In addition, the nozzle unit 223 of the plated steel sheet first cooling device 200 according to an embodiment of the present invention may be characterized by spraying the cooling water in the form of droplets.
일례로, 상기 노즐부(223)는 상기 냉각수를 액적 형태로 분무하여 분사되는 상기 냉각수의 분사 영역을 넓힐 수 있는 스프레이 노즐로 제공될 수 있다.For example, the nozzle unit 223 may be provided as a spray nozzle that can widen the spraying area of the cooling water sprayed by spraying the cooling water in the form of droplets.
더하여 상기 노즐부(223)는 복수 개가 상기 강판(S)의 폭에 대응되게 구성될 수도 있는데, 이에 대한 자세한 설명은 도 3을 참조하여 후술한다.In addition, a plurality of the nozzle units 223 may be configured to correspond to the width of the steel sheet (S), which will be described later with reference to FIG. 3.
다른 한편으로, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치(200)는 강판의 이동 경로 상에 제공되는 제1바디유닛(210)을 더 포함하고, 상기 냉각수분사유닛(220)은, 상기 제1바디유닛(210)에 결합되며, 상기 냉각수를 상기 강판(S)으로 분사하게 구비되고, 상기대전유닛(230)은, 상기 제1바디유닛(210)에 결합되며, 상기 냉각수분사유닛(220)의 냉각수가 이동하는 유로부(221)가 관통되게 구비되어 상기 냉각수분사유닛(220)에서 분사되는 냉각수에 동일한 극성을 부여하게 대전시킬 수 있다.On the other hand, the plated steel sheet first cooling device 200 according to an embodiment of the present invention further includes a first body unit 210 provided on the movement path of the steel sheet, the coolant spray unit 220 , Coupled to the first body unit 210, provided to spray the cooling water onto the steel sheet S, and the charging unit 230 is coupled to the first body unit 210 and sprayed with the cooling water. A flow path part 221 through which the coolant of the unit 220 moves may be provided to penetrate to impart the same polarity to the coolant injected from the coolant injection unit 220.
그리고, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치(200)의 상기 대전유닛(230)은, 상기 냉각수분사유닛(220)과 일체로 상기 제1바디유닛(210)에 결합될 수도 있다.In addition, the charging unit 230 of the plated steel sheet first cooling device 200 according to an embodiment of the present invention may be coupled to the first body unit 210 integrally with the cooling water injection unit 220. have.
이와 같이 본 발명의 도금강판 제1냉각장치(200)는 냉각수가 분사되는 냉각수분사유닛(220)에 일체로 대전유닛(230)을 연계됨으로써, 상기 냉각수가 극성이 부여된 후에 분사될 수 있다.As described above, the plated steel sheet first cooling device 200 of the present invention is connected to the charging unit 230 integrally with the cooling water injection unit 220 through which the cooling water is injected, so that the cooling water may be injected after the polarity is given.
여기서, 상기 제1바디유닛(210)은 상기 냉각수분사유닛(220), 대전유닛(230)이 결합되는 바디의 역할을 하게 되며, 도금용액(L)이 일부 응고된 도금층이 입혀진 강판(S)의 이동경로 상에 구비된다.Here, the first body unit 210 serves as a body to which the cooling water spraying unit 220 and the charging unit 230 are coupled, and the plated steel layer S coated with a plating layer in which the plating solution L is partially solidified. It is provided on the movement path of.
그리고, 상기 제1바디유닛(210)은 상기 냉각수분사유닛(220)에서 분사되는 냉각수의 분사 영역을 제어하기 위해서, 제1프레임부(211)를 포함하며, 또한 제1가스커튼부(212)가 구비될 수 있는데, 이에 대한 자세한 설명은 도 4를 참조하여 후술한다.In addition, the first body unit 210 includes a first frame portion 211 and a first gas curtain portion 212 in order to control an injection area of the cooling water injected from the cooling water injection unit 220. It may be provided, a detailed description thereof will be described later with reference to FIG.
상기 냉각수분사유닛(220)은 냉각수를 상기 강판(S)에 분사하는 역할을 하게 된다. 특히 상기 대전유닛(230)과의 배치 관계에 의해서 분사되는 냉각수를 대전 시킨 후에 분사할 수 있다.The cooling water injection unit 220 serves to spray the cooling water to the steel sheet (S). In particular, the cooling water injected by the arrangement relationship with the charging unit 230 may be injected after charging.
일례로, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치(200)의 상기 냉각수분사유닛(220)은, 적어도 일부는 그라운드(ground)에 접지되어 상기 대전유닛(230)에 정전하 인가시에 그라운드로 음전하를 배출하거나, 그라운드에서 음전하를 받아들이는 것을 특징으로 할 수 있다.For example, the cooling water injection unit 220 of the plated steel sheet first cooling device 200 according to an embodiment of the present invention, at least a part of the ground is applied to the ground (ground) to apply the electrostatic charge to the charging unit 230 It can be characterized by discharging negative charges to the ground at the time or receiving negative charges from the ground.
다시 말해, 상기 대전유닛(230)에서 인가되는 정전하에 의해서, 그라운드에 접지된 상기 냉각수분사유닛(220)의 부분을 통하여 상기 냉각수에서 음전하가 배출되거나, 상기 냉각수로 음전하가 전달되어 극성을 형성하며 대전되는 것이다.In other words, by the electrostatic charge applied from the charging unit 230, the negative charge is discharged from the cooling water through the portion of the cooling water injection unit 220 grounded to the ground, or the negative charge is transferred to the cooling water to form a polarity It is charged.
그리고, 이러한 극성 형성의 대전은 상기 대전유닛(230)이 상기 냉각수분사유닛(220)의 일측에 구비됨에 의한 것이다.And, the charging of the polarity is formed by the charging unit 230 is provided on one side of the cooling water injection unit 220.
구체적으로, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치(200)의 상기 대전유닛(230)은, 정전하가 인가되어 전기장을 형성하는 전극부(232)를 포함하고, 상기 냉각수분사유닛(220)은, 상기 냉각수가 이동하는 유로부(221)를 상기 전극부(232)에 교차하게 구비시킴에 따라, 분사 전의 냉각수에 극성을 부여하게 대전시킬 수 있게 된다.Specifically, the charging unit 230 of the plated steel sheet first cooling device 200 according to an embodiment of the present invention, the electrode unit 232 is applied to form an electric field by applying an electrostatic charge, the coolant spray Since the unit 220 includes the flow path part 221 through which the coolant moves, intersects the electrode part 232, the unit 220 can charge the coolant before injection to give polarity.
일례로, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치(200)의 상기 전극부(232)는, 상기 유로부(221)의 상하측에 배치되는 것을 특징으로 할 수 있다.For example, the electrode part 232 of the plated steel sheet first cooling device 200 according to an embodiment of the present invention may be disposed on upper and lower sides of the flow path part 221.
그리고, 본 발명의 도금강판 제1냉각장치(200)는 분사압제공부(224)를 포함할 수 있으며, 여기서 상기 분사압제공부(224)는 상기 유로부(221)를 통하여 상기 제1용기부(222)에서 노즐부(223)로 전달되는 냉각수의 분사력을 높이기 위해서 제공된다.In addition, the first cooling apparatus 200 of the plated steel sheet of the present invention may include an injection pressure providing unit 224, wherein the injection pressure providing unit 224 is provided through the flow path part 221. 222 is provided to increase the injection force of the cooling water delivered to the nozzle unit 223.
다시 말해, 상기 냉각수의 유동에 의한 분사력만으로 상기 노즐부(223)에서 냉각수를 분사할 수도 있으나, 냉각수의 분사력을 더 높이기 위해서 상기 기압제공부(224)를 더 구비할 수 있는 것이다. 또는 상기 분사압제공부(224)에서 부여하는 분사압만으로 상기 냉각수를 분사할 수 있는 것이다.In other words, although the cooling water may be injected from the nozzle unit 223 only by the injection force by the flow of the cooling water, the air pressure providing unit 224 may be further provided to further increase the injection force of the cooling water. Alternatively, the cooling water may be injected only by the injection pressure imparted by the injection pressure providing unit 224.
이와 같이, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치(200)의 상기 냉각수분사유닛(220)은, 상기 노즐부(223)와 연통되며, 상기 냉각수에 분사압을 부여하도록 가스를 제공하는 분사압제공부(224)를 포함할 수 있다.As described above, the cooling water injection unit 220 of the plated steel sheet first cooling device 200 according to an embodiment of the present invention communicates with the nozzle unit 223 and supplies gas to the cooling water to impart an injection pressure. It may include an injection pressure providing unit 224 to provide.
여기서, 상기 가스(A)는 공기일 수 있고, 상기 기압제공부(224)는 배관을 통하여 외부에서 가스(A)를 전달받게 구성될 수 있으며, 전달받은 가스(A)를 상기 노즐부(223)로 제공하기 위해서, 상기 노즐부(223)까지 연통되는 가스(A) 유로를 형성할 수 있다.Here, the gas (A) may be air, the air pressure providing unit 224 may be configured to receive the gas (A) from the outside through a pipe, the received gas (A) to the nozzle unit 223 In order to provide (), a gas (A) flow path communicating with the nozzle unit 223 may be formed.
상기 대전유닛(230)은 상기 냉각수가 극성을 가질 수 있도록 대전된 상태에서 분사될 수 있게 구성된다.The charging unit 230 is configured to be sprayed in the charged state so that the cooling water has a polarity.
이를 위해서, 상기 대전유닛(230)은 상기 냉각수분사유닛(220)과 일체로 제공될 수 있으며, 상기 제1바디유닛(210)에 결합되어 제공된다.To this end, the charging unit 230 may be provided integrally with the cooling water injection unit 220, it is provided coupled to the first body unit (210).
특히, 상기 대전유닛(230)은 상기 냉각수분사유닛(220)의 유로부(221)가 관통되어 상기 유로부(221)의 일부보다는 상기 냉각수의 분사 방향의 후방에 위치시킴으로써, 분사되는 냉각수를 동일 극성으로 형성하여 분사할 수 있는데, 이에 대한 자세한 설명은 후술한다.In particular, the charging unit 230 has the passage portion 221 of the cooling water injection unit 220 penetrates and positioned behind the spraying direction of the cooling water rather than a part of the passage portion 221, thereby making the sprayed cooling water the same. It can be formed by spraying the polarity, a detailed description thereof will be described later.
그리고, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치(200)의 상기 대전유닛(230)은, 상기 전극부(232)를 지지하는 전극지지부(231)를 더 포함하고, 상기 전극지지부(231)는, 상기 제1용기부(222)가 형성되어 있는 제1바디유닛(210)의 전방에, 상기 제1바디유닛(210)과 일체로 또는 결합되도록 설치되는 것을 특징으로 할 수 있다.In addition, the charging unit 230 of the plated steel sheet first cooling device 200 according to an embodiment of the present invention further includes an electrode support part 231 for supporting the electrode part 232, and the electrode support part. 231 may be installed in front of the first body unit 210 in which the first container portion 222 is formed, to be integrally or coupled with the first body unit 210. .
여기서, 상기 냉각수가 유동하는 상기 냉각수분사유닛(220)의 유로부(221)의 적어도 일부는 상기 냉각수 분사 방향을 기준으로 상기 전극부(232)의 전방에 구비되어, 유로부(221)에 구비된 냉각수를 동일 극성으로 대전시킬 수 있게 된다.Here, at least a part of the flow path part 221 of the coolant injection unit 220 through which the coolant flows is provided in front of the electrode part 232 based on the coolant injection direction, and provided in the flow path part 221. The cooled water can be charged with the same polarity.
다시 말해, 상기 유로부(221)는 분사되는 냉각수를 상기 제1용기부(222)에서 상기 노즐부(223)로 전달하는 역할을 하게 되는데, 이때 상기 전극부(232)로 상기 유로부(221)가 관통되어 상기 전극부(232)의 전방에 일부가 구비됨으로써, 상기 유로부(221)로 이동하는 냉각수에 동일 극성을 부여하게 대전시킬 수 있게 되는 것이다.In other words, the flow path part 221 serves to transfer the sprayed coolant from the first container part 222 to the nozzle part 223. In this case, the flow path part 221 to the electrode part 232. ) Is penetrated so that a portion is provided in front of the electrode part 232, so that the coolant moving to the flow path part 221 can be charged to give the same polarity.
즉, 상기 전극부(232)의 대전되는 극성에 따라 냉각수에 부여되는 극성을 조절하게 상기 냉각수를 대전시킴으로써, 상기 냉각수 전체를 동일 극성으로 대전시켜 분사할 수 있는 것이다.That is, by charging the cooling water to adjust the polarity applied to the cooling water according to the polarity of the electrode portion 232, the entire cooling water can be charged and sprayed with the same polarity.
상기 전극지지부(231)는 상기 전극부(232)를 상기 냉각수분사유닛(220)과 일체로 구성될 수 있게 지지하는 역할을 하게 된다.The electrode support part 231 serves to support the electrode part 232 to be integrally formed with the cooling water injection unit 220.
이를 위해서, 상기 전극지지부(231)는 상기 냉각수분사유닛(220)이 결합된 상기 제1바디유닛(210)에 결합될 수 있으며, 내부에는 상기 전극부(232)를 구비할 수 있다.To this end, the electrode support 231 may be coupled to the first body unit 210 to which the cooling water injection unit 220 is coupled, and may include the electrode portion 232 therein.
상기 전극부(232)는 외부의 정전하를 인가하는 고전압 발생기(PS)에 연결되어 정전하가 인가되는 구성으로써, 상기 고전압 발생기(PS)는 그라운드(ground)에 접지되고 상기 전극부(232)에도 연결된 상태에서 고전압을 인가함으로써, 상기 전극부(232)는 양극(+) 또는 음극(-)으로 정전하가 인가된 상태를 유지할 수 있게 된다.The electrode part 232 is connected to a high voltage generator PS for applying an external static charge, and thus a static charge is applied. The high voltage generator PS is grounded to ground and the electrode part 232 is connected. By applying a high voltage in the connected state, the electrode unit 232 can maintain a state in which the electrostatic charge is applied to the positive electrode (+) or the negative electrode (-).
일례로 상기 전극부(232)를 양극(+)의 정전하로 인가시키기 위해서, 상기 고전압 발생기(PS)는 상기 전극부(232)에 존재하는 음전하를 그라운드를 통하여 배출하게 된다.For example, in order to apply the electrode part 232 to the positive charge of the positive electrode (+), the high voltage generator PS discharges the negative charge present in the electrode part 232 through the ground.
한편, 상기 전극부(232)가 정전하를 인가하면, 상기 전극부(232)와 인접한 유로부(221)에 구비된 냉각수는 단일 극성으로 대전되게 되며, 이렇게 대전된 냉각수는 강판에 접착되는 접착력이 증가되어 냉각능을 높이게 된다.On the other hand, when the electrode portion 232 applies the electrostatic charge, the coolant provided in the flow path portion 221 adjacent to the electrode portion 232 is charged with a single polarity, the coolant thus charged is the adhesive force adhered to the steel sheet This increases the cooling capacity.
여기서, 상기 냉각수가 대전되는 것은 상기 유로부(221)와 연결된 제1용기부(222)가 그라운드에 접지되어 있으며, 그라운드로부터 음전하를 받아들이거나, 그라운드로 음전하를 배출함으로써, 상기 냉각수를 단일 극성으로 대전시킬 수 있게 되는 것이다.In this case, the cooling water is charged by the first container part 222 connected to the flow path part 221 grounded to the ground, and receives the negative charge from the ground, or discharges the negative charge to the ground, the cooling water in a single polarity It will be able to charge.
도 3은 본 발명의 도금강판 제1냉각장치(200)를 도시한 사시도로서, 이를 참조하면, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치(200)의 상기 노즐부(223)는, 상기 강판(S)의 폭 방향으로 복수 개가 구비되는 것을 특징으로 할 수 있다.3 is a perspective view showing a plated steel sheet first cooling device 200 of the present invention. Referring to this, the nozzle unit 223 of the plated steel sheet first cooling device 200 according to an embodiment of the present invention is In the width direction of the steel sheet (S), a plurality of pieces may be provided.
이는 상기 강판(S)에 대한 냉각이 균일하게 수행시키기 위한 것이다. 다시 말해, 상기 강판(S)의 폭 전체에 대하여 대전된 냉각수를 분사하여 균일한 냉각 효과가 발생하도록 구성하기 위해서, 상기 노즐부(223)를 상기 강판(S)의 폭 방향으로 복수 개를 구비시킨 것이다.This is for uniformly cooling the steel sheet (S). In other words, in order to generate a uniform cooling effect by spraying the charged cooling water over the entire width of the steel sheet (S), a plurality of nozzle portions 223 are provided in the width direction of the steel sheet (S). It is.
도 4는 본 발명의 도금강판 제1냉각장치(200)이 제1가스커튼부(212)를 포함하는 실시예를 도시한 정면도로서, 이를 참조하면, 본 발명의 일 실시예에 따른 도금강판 제1냉각장치(200)는 상기 노즐부(223)의 주변부에 구비되며, 분사되는 상기 냉각수를 상기 강판(S)으로 유도하는 제1가스커튼부(212)를 포함할 수 있다.Figure 4 is a front view showing an embodiment in which the plated steel sheet first cooling device 200 of the present invention includes a first gas curtain portion 212, referring to this, plated steel sheet according to an embodiment of the present invention The first cooling device 200 may include a first gas curtain part 212 provided at a periphery of the nozzle part 223 to guide the injected cooling water to the steel sheet S.
이와 같이 상기 제1가스커튼부(212)를 포함함으로써, 상기 냉각수분사유닛(220)에서 분사되는 냉각수의 분사 영역을 제어할 수 있게 된다.By including the first gas curtain portion 212 in this way, it is possible to control the injection region of the cooling water injected from the cooling water injection unit 220.
다시 말해, 상기 노즐부(223)에서 냉각수를 분사할 때, 상기 제1가스커튼부(212)에서 가스(A)가 분사되어 분사되는 냉각수 주변을 쉴딩하게 구비됨으로써, 상기 냉각수의 분사 영역을 제한할 수 있는 것이다.In other words, when the coolant is injected from the nozzle unit 223, the first gas curtain part 212 is provided to shield the surroundings of the coolant from which the gas A is injected, thereby limiting the spray area of the coolant. You can do it.
이러한 제1가스커튼부(212)는 상기 제1바디유닛(210)에 포함된 구성일 수도 있으나, 이에 한정되는 것은 아니다. 즉, 상기 냉각수분사유닛(220)의 상기 노즐부(223)에 연계되어 분사된 냉각수를 강판으로 유도하는 구성이면 본 발명의 상기 제1가스커튼부(212)일 수 있다.The first gas curtain portion 212 may be a configuration included in the first body unit 210, but is not limited thereto. That is, the first gas curtain part 212 of the present invention may be provided when the cooling water injected in connection with the nozzle part 223 of the cooling water injection unit 220 is guided to the steel sheet.
이를 위해서, 상기 제1가스커튼부(212)는 외부에서 가스(A)를 전달받는 배관과 연결되어 제공될 수 있다.To this end, the first gas curtain portion 212 may be provided in connection with a pipe that receives the gas (A) from the outside.
도 1은 본 발명의 도금설비를 도시한 정면도이고, 도 10의 (a)는 종래기술에 의해 도금층 냉각시에 스팽글 무늬가 조대화된 상태를 나타낸 사진이고, 도 10의 (b)는 본 발명에 의해서 도금층 냉각시에 스팽글 무늬가 미세화된 상태를 나타낸 사진이다.1 is a front view showing the plating equipment of the present invention, Figure 10 (a) is a photograph showing a state in which the sequin pattern is coarse during cooling of the plating layer by the prior art, Figure 10 (b) is the present invention Is a photograph showing a state where the sequins pattern was refined at the time of cooling the plating layer.
이를 참조하면, 본 발명의 다른 실시예에 따른 도금설비는 도금조(300) 및 상기 도금조(300)에서 배출된 도금강판(S)의 이동 경로 상에 제공되는, 상기 도금강판 제1냉각장치(200)를 포함할 수 있다.Referring to this, the plating equipment according to another embodiment of the present invention is provided on the plating path 300 and the movement path of the plated steel sheet (S) discharged from the plating tank 300, the first cooling device of the plated steel sheet 200 may be included.
여기서, 상기 도금조(300)의 경우에는 상기 강판(S)에 도금용액(L)을 입히는 역할을 하게 된다. 이를 위해서, 상기 도금조(300)에는 용융 아연용액 등의 도금용액(L)이 구비되며, 상기 강판(S)의 이동을 가이드하는 포트롤(400)이 구비될 수 있다.Here, in the case of the plating bath 300 serves to coat the plating solution (L) on the steel sheet (S). To this end, the plating bath 300 is provided with a plating solution L, such as a molten zinc solution, may be provided with a port roll 400 for guiding the movement of the steel sheet (S).
그리고, 상기 도금설비에서 앞서 설명한 상기 도금강판 제1냉각장치(200)는 후술할 도금강판 제2냉각장치(100)에서 냉각시켜 일부 응고된 강판(S)의 도금층에 대한 냉각을 수행하여 상기 도금층에 대한 냉각을 마무리하게 된다.In addition, the plated steel sheet first cooling device 200 described above in the plating facility is cooled in the plated steel sheet second cooling device 100 to be described later to perform cooling on the plated layer of the partially solidified steel sheet (S) and the plating layer. This concludes the cooling down.
다시 말해, 본 발명의 일 실시예에 따른 도금설비의 상기 제1냉각장치(200)는, 강판(S)의 외면에 입혀진 도금용액(L)이 적어도 상기 도금용액(L)의 용융온도보다 낮은 온도로 냉각된 강판(S)을 상기 제2냉각장치(100)에서 전달받아, 상기 강판(S)에 대하여 대전에 의해 극성이 부여된 냉각수를 분사하여 냉각을 수행하는 것을 특징으로 할 수 있는 것이다.In other words, the first cooling device 200 of the plating equipment according to an embodiment of the present invention, the plating solution (L) coated on the outer surface of the steel sheet (S) is at least lower than the melting temperature of the plating solution (L) Receiving the steel sheet (S) cooled to the temperature from the second cooling device 100, it can be characterized in that to perform cooling by spraying the cooling water imparted polarity to the steel sheet (S) by charging. .
이를 위해서, 상기 도금강판 제1냉각장치(200)는 상기 도금강판 제2냉각장치(100)보다 상기 강판(S)의 이동 경로의 후방에 위치하게 된다. 즉, 상기 강판(S)은 상기 도금조(300)에서 배출된 후에 상기 도금강판 제2냉각장치(100)를 1차로 통과하고, 그 후에 상기 도금강판 제1냉각장치(200)를 2차로 통과하게 구성되는 것이다.To this end, the plated steel sheet first cooling device 200 is located behind the movement path of the steel plate (S) than the plated steel sheet second cooling device (100). That is, the steel sheet S passes through the plated steel sheet second cooling device 100 first after being discharged from the plating bath 300, and thereafter passes through the plated steel sheet first cooling device 200 secondly. Will be configured.
그리고, 상기 강판(S)에 대하여 도금용액(L)을 입히고 이를 냉각하는 이동경로를 일자 형태로 형성하는 것이 아니라 적어도 하나의 경로가 변경되는 형태의 레이아웃을 형성하여, 상기 강판(S)의 이동경로를 포함해야 하는 도금설비를 소형화할 수 있게 한다.The movement of the steel sheet S is formed by forming a layout in which at least one path is changed, instead of forming a movement path in which the plating solution L is applied to the steel sheet S and cooling it. It is possible to miniaturize the plating equipment which should include the path.
일례로서, 상기 강판(S)의 이동경로를 지면을 향하여 개방된 'ㄷ' 형상의 경로로 형성할 수 있다.As an example, the movement path of the steel sheet (S) may be formed in a path of the 'c' shape opened toward the ground.
다시 말해, 본 발명의 일 실시예에 따른 도금설비의 상기 제1냉각장치는, 상기 강판의 이동경로가 상기 도금조의 상방으로 이동하는 제1영역, 상기 제1영역에 연결되어 상기 강판의 이동경로가 지면에 수평하게 이동하는 제2영역과 상기 제2영역에 연결되어 상기 강판의 이동경로가 하방으로 이동하는 제3영역에 각각 구비되는 것을 특징으로 할 수 있는 것이다.In other words, the first cooling device of the plating equipment according to an embodiment of the present invention, the movement path of the steel sheet is connected to the first region, the first region in which the movement of the steel plate moves above the plating bath, the movement path of the steel sheet It is characterized in that it is provided in each of the second region and the third region which is connected to the second region to move horizontally to the ground, the movement path of the steel sheet moves downward.
더하여, 상기 제1냉각장치(200)에서 상기 강판(S)에 형성되는 도금층에 대하여 냉각을 수행한 후에 상기 도금용액(L)에 의해 형성되는 도금층을 완전히 응고시키기 위해서, 상기 제1냉각장치(200)의 출측에는 수냉장치(600)가 더 구비될 수 있다.In addition, in order to completely solidify the plating layer formed by the plating solution L after cooling the plating layer formed on the steel sheet S in the first cooling apparatus 200, the first cooling apparatus ( A water cooling device 600 may be further provided at the exit side of the 200.
즉, 본 발명의 일 실시예에 따른 도금설비는 상기 제1냉각장치(200)보다 상기 강판(S)의 이동경로에 후행하여 제공되며, 강판(S)의 외면에 입혀진 도금용액(L)이 상기 제1냉각장치(200)에 의해서 완전히 응고되면 상기 제1냉각장치(200)에서 상기 강판(S)을 전달받아, 수중 냉각을 수행하는 수냉장치(600)를 포함할 수 있는 것이다.That is, the plating facility according to an embodiment of the present invention is provided after the movement path of the steel sheet (S) than the first cooling device 200, the plating solution (L) coated on the outer surface of the steel sheet (S) is When completely solidified by the first cooling device 200 may receive the steel sheet (S) from the first cooling device 200, it may include a water cooling device 600 for performing underwater cooling.
여기서, 상기 수냉장치(600)는 상기 강판(S)에 대하여 냉각수를 공급하여 냉각을 수행하는 수냉부(610)와 상기 수냉부(610)에서 배출되는 강판(S)을 건조하는 건조부(620)를 포함할 수 있다.Here, the water cooling device 600 supplies a cooling water to the steel sheet (S) and the cooling unit 610 for performing cooling and the drying unit 620 for drying the steel sheet (S) discharged from the water cooling unit 610. ) May be included.
또한, 본 발명의 도금설비는 상기 도금조(300) 및 제1냉각장치(200)를 포함하는 것에 더하여, 상기 도금조(300)에서 상기 강판(S)이 배출되는 출측에 구비되며, 초음파 진동에 의해서 냉각수를 안개로 형성하여 가스(A)와 함께 상기 강판(S)에 분사시키는 도금강판 제2냉각장치(100)를 더 포함할 수 있다.In addition, the plating equipment of the present invention includes the plating bath 300 and the first cooling device 200, and is provided on the exit side from which the steel sheet S is discharged from the plating bath 300, and ultrasonic vibrations. By the cooling water to form a mist may further include a plated steel sheet second cooling device 100 for spraying the steel sheet (S) with the gas (A).
이와 같이 본 발명의 도금설비는 상기 도금강판 제1냉각장치(200) 및 상기 도금강판 제2냉각장치(100)를 구비함으로써, 도금용액(L)이 입혀진 강판(S)에 대한 냉각 속도를 향상시킬 수 있기 때문에, 아연용액 등의 도금용액(L)에 형성될 수 있는 스팽글 무늬를 미세화할 수 있다. As described above, the plating facility of the present invention includes the plated steel sheet first cooling device 200 and the plated steel sheet second cooling device 100, thereby improving the cooling rate of the plated solution L coated steel plate S. Since it can be made, the sequin pattern which can be formed in plating solution L, such as a zinc solution, can be refined.
즉, 도 10의 (a)에 제시된 것과 같이 종래에 냉각 속도의 확보되지 않은 경우에 비하여, 도 10의 (b)에 제시된 것과 같이 본 발명에서는 스팽글 무늬를 미세화할 수 있는 냉각 속도를 확보할 수 있는 것이다.That is, as shown in FIG. 10 (b), in the present invention, as shown in FIG. 10 (b), a cooling rate capable of miniaturizing a sequin pattern can be ensured, as shown in FIG. 10 (a). It is.
더하여, 제1냉각장치(200) 및 상기 제2냉각장치(100)에 의해서 냉각능이 향상됨에 따라 상기 강판(S)에 입혀진 도금용액(L)의 냉각 응고 시간을 단축시킬 수 있어, 냉각 라인을 짧게 구성할 수 있기 때문에 도금설비를 소형화할 수 있게 된다.In addition, as the cooling capacity is improved by the first cooling device 200 and the second cooling device 100, the cooling solidification time of the plating solution L coated on the steel sheet S can be shortened, thereby reducing the cooling line. Because of the short construction, the plating equipment can be miniaturized.
상기 도금강판 제2냉각장치(100)는 도금용액(L)이 입혀진 강판(S)이 도금조(300)에서 배출되는 초기에 냉각을 수행하는 장치로써, 미응고 도금용액(L)에 대한 냉각을 수행하게 된다.The plated steel sheet second cooling device 100 is a device for performing cooling in the initial stage when the steel plate S coated with the plating solution L is discharged from the plating bath 300, and is cooled to the uncondensed plating solution L. Will be performed.
다시 말해, 본 발명의 일 실시예에 따른 도금설비의 상기 제2냉각장치(100)는, 적어도 상기 도금용액(L)의 용융온도보다 높은 온도로 상기 도금조(300)에서 배출되는 강판(S)의 표면상의 도금용액(L)에 대하여 냉각을 수행하며, 적어도 상기 도금용액(L)의 용융온도보다 낮은 온도로 상기 도금용액(L)을 냉각하여 상기 제1냉각장치(200)로 전달하는 것을 특징으로 할 수 있는 것이다.In other words, the second cooling device 100 of the plating equipment according to an embodiment of the present invention, the steel sheet (S) discharged from the plating bath 300 at a temperature higher than the melting temperature of the plating solution (L) at least (S) Cooling to the plating solution (L) on the surface, and cooling the plating solution (L) to a temperature lower than the melting temperature of the plating solution (L) to deliver to the first cooling device (200). It can be characterized by.
즉, 상기 제2냉각장치(100)는 어느 정도 상기 도금용액(L)에 대한 응고가 수행된 후에 상기 강판(S)을 상기 제1냉각장치(200)로 전달함으로써, 상기 제1냉각장치(200)에서 냉각할 때 사용하는 냉각수에 의해서 도금층에 움푹 패인 피트마크(pit mark)가 발생하는 것을 방지할 수 있는 것이다.That is, the second cooling apparatus 100 transfers the steel sheet S to the first cooling apparatus 200 after the solidification of the plating solution L is performed to some extent, thereby providing the first cooling apparatus ( It is possible to prevent the formation of a pit mark in the plating layer by the cooling water used for cooling in 200).
특히, 상기 도금강판 제2냉각장치(100)는 도금용액(L)이 입혀진 강판(S)에 대한 냉각 초기에 가스(A)에 의한 냉각을 할 때, 초음파를 이용하여 형성된 미세 수분 입자를 함께 분사함으로써, 미응고 도금층에 움푹 패인 피트마크(pit mark)가 형성되는 것을 방지하면서도 냉각능을 높일 수 있다. 이에 대한 설명은 도 5 내지 도 8을 참조하여 자세히 후술한다.In particular, the plated steel sheet second cooling device 100 when the cooling by the gas (A) at the beginning of the cooling for the steel plate (S) coated with the plating solution (L), together with the fine moisture particles formed by using ultrasonic waves By spraying, the cooling ability can be improved while preventing the formation of recessed pit marks in the unsolidified plating layer. The description thereof will be described later in detail with reference to FIGS. 5 to 8.
더하여, 상기 도금강판 제2냉각장치(100)가 필터유닛(140)을 구비하는 경우에는, 초음파유닛(130)에 의해 형성된 안개 입자의 크기에 따른 이동 관성력의 차이를 이용하여, 도금층으로 분사될 안개 입자의 크기를 조정할 수 있어, 피트마크 형성 방지의 효율을 더욱 높일 수 있다. 이에 대한 설명은 도 9를 참조하여 자세히 후술한다.In addition, when the plated steel sheet second cooling device 100 includes the filter unit 140, the plated steel sheet may be sprayed onto the plated layer by using a difference in moving inertia according to the size of the fog particles formed by the ultrasonic unit 130. The size of the mist particles can be adjusted to further increase the efficiency of prevention of pit mark formation. The description thereof will be described later with reference to FIG. 9.
그리고, 본 발명의 도금설비는 상기 도금조(300)와 상기 도금강판 제2냉각장치(100)의 사이의 위치에는 에어나이프(500)가 구비되어, 상기 도금조(300)에서 입혀진 상기 도금용액(L)의 두께를 조정하게 구성될 수 있다.In addition, the plating equipment of the present invention is provided with an air knife 500 at a position between the plating bath 300 and the plated steel sheet second cooling device 100, and the plating solution coated in the plating bath 300. It can be configured to adjust the thickness of (L).
즉, 본 발명의 일 실시예에 따른 도금설비는 상기 강판(S)에 뭍은 도금용액(L)의 두께를 조정하도록, 상기 강판(S)의 이동경로 상에서 상기 도금조(300)와 상기 제2냉각장치(100)의 사이에 구비되는 에어나이프(500)를 포함할 수 있는 것이다.That is, the plating facility according to an embodiment of the present invention, the plating bath 300 and the agent on the movement path of the steel sheet (S) to adjust the thickness of the plating solution (L) thinned on the steel sheet (S) It may include an air knife 500 provided between the two cooling apparatus (100).
도 5는 본 발명의 도금강판 제2냉각장치(100)를 도시한 정면도로서, 이를 참조하면, 본 발명의 일 실시예에 따른 도금강판 제2냉각장치(100)는 미응고 도금용액(L)이 외면에 입혀진 강판(S)의 이동경로 상에 구비되는 제2바디유닛(110), 상기 제2바디유닛(110)에 구비되며, 상기 강판(S)으로 가스(A)를 분사하는 가스분사유닛(120) 및 상기 제2바디유닛(110)에 구비되며, 냉각수를 안개로 형성하여 상기 가스분사유닛(120)에서 분사되는 가스(A)를 따라 상기 강판(S)에 분사시키는 초음파유닛(130)을 포함할 수 있다.FIG. 5 is a front view of a plated steel sheet second cooling device 100 of the present invention. Referring to this, the plated steel plate second cooling device 100 according to an embodiment of the present invention is an uncondensed plating solution (L). The second body unit 110 and the second body unit 110 provided on the movement path of the steel plate (S) coated on the outer surface, the gas injection for injecting gas (A) to the steel plate (S) Ultrasonic unit provided in the unit 120 and the second body unit 110 to form a cooling water in the fog to spray the steel sheet (S) along the gas (A) injected from the gas injection unit 120 ( 130).
즉, 본 발명의 도금강판 제2냉각장치(100)는 초음파유닛(130)에 의해서 형성된 냉각수 안개를 함께 분사함으로써, 가스(A)에 의한 도금용액(L) 냉각시에 미응고 도금용액(L)에 움푹 패인 피트마크가 형성되는 것을 방지할 수 있게 구성하면서도 냉각능을 높일 수 있게 된 것이다.That is, the plated steel sheet second cooling device 100 of the present invention by spraying the cooling water mist formed by the ultrasonic unit 130 together, the uncondensed plating solution (L) at the time of cooling the plating solution (L) by the gas (A) It is possible to increase the cooling capacity while configuring to prevent the formation of a recessed pit mark.
여기서, 상기 제2바디유닛(110)은 상기 가스분사유닛(120), 초음파유닛(130)이 구비되는 바디의 역할을 하게 된다. 더하여, 상기 가스분사유닛(120)에서 제공하는 가스(A)와 상기 초음파유닛(130)에서 제공하는 냉각수 안개를 도금용액(L)이 입혀진 강판(S)으로 함께 분사하는 역할을 하기도 한다. 이를 위해서, 상기 제2바디유닛(110)은 제2프레임부(111), 슬릿노즐부(112), 제2가스커튼부(113)를 포함할 수 있으며, 이에 대한 자세한 설명은 도 7 및 도 8를 참조하여 후술한다.Here, the second body unit 110 serves as a body in which the gas injection unit 120 and the ultrasonic unit 130 are provided. In addition, the gas (A) provided by the gas injection unit 120 and the cooling water mist provided by the ultrasonic unit 130 also serves to spray together the steel plate (S) coated with the plating solution (L). To this end, the second body unit 110 may include a second frame portion 111, a slit nozzle portion 112, a second gas curtain portion 113, a detailed description thereof will be described with reference to FIGS. It will be described later with reference to 8.
그리고, 상기 제2바디유닛(110)은 본 발명의 도금강판 제2냉각장치(100)가 도금조(300)에서 배출되는 강판(S)을 1차 냉각할 수 있도록, 도금조(300)에서 배출되는 미응고 도금용액(L)이 입혀진 강판(S)의 이동경로 상에 구비된다.And, the second body unit 110 in the plating bath 300 so that the plated steel sheet second cooling apparatus 100 of the present invention to cool the steel sheet (S) discharged from the plating bath 300 first The non-coagulated plating solution L discharged is provided on the moving path of the coated steel sheet S.
상기 가스분사유닛(120)은 강판(S)에 입혀진 미응고 도금용액(L)을 냉각하기 위해서 가스(A)를 분사하는 역할을 한다. 이를 위해서 상기 가스분사유닛(120)은 가스공급부(121)를 포함할 수 있으며, 가스(A) 분사에 의한 냉각 효율을 높이기 위해서 가스(A)의 온도를 저온 또는 고온으로 조정할 수 있는 기온조절부(122)를 포함할 수 있는데, 이에 대한 자세한 설명은 도 6을 참조하여 후술한다.The gas injection unit 120 serves to inject a gas (A) to cool the non-coagulated plating solution (L) coated on the steel sheet (S). To this end, the gas injection unit 120 may include a gas supply unit 121, and a temperature control unit for adjusting the temperature of the gas A to low or high temperature in order to increase the cooling efficiency by the gas A injection. 122, which will be described in detail later with reference to FIG. 6.
상기 초음파유닛(130)은 상기 가스분사유닛(120)에서 분사되는 가스(A)의 냉각능을 높이기 위해서, 상기 가스(A)에 냉각수 안개를 제공하는 역할을 하게 된다.The ultrasonic unit 130 serves to provide a cooling water mist to the gas (A) in order to increase the cooling capacity of the gas (A) injected from the gas injection unit (120).
여기서, 상기 가스(A)는 공기일 수 있으며, 상기 초음파유닛(130)은 초음파 진동에 의해서 냉각수를 안개로 형성하게 되고, 이렇게 형성된 안개를 상기 가스분사유닛(120)에서 제공하는 가스(A)와 함께 상기 제2바디유닛(110)의 슬릿노즐부(112)로 제공하여 강판(S)에 입혀진 도금용액(L)으로 분사하게 된다.Here, the gas (A) may be air, and the ultrasonic unit 130 forms the cooling water into mist by ultrasonic vibration, and the gas (A) providing the mist formed in the gas injection unit 120. Together with the slit nozzle portion 112 of the second body unit 110 is sprayed to the plating solution (L) coated on the steel sheet (S).
이를 위해서, 상기 초음파유닛(130)은 제2용기부(131), 초음파발생부(132), 안개가이드부(133)를 포함할 수 있다.To this end, the ultrasonic unit 130 may include a second container portion 131, the ultrasonic generator 132, the fog guide portion 133.
다시 말해, 본 발명의 일 실시예에 따른 도금강판 제2냉각장치(100)의 상기 초음파유닛(130)은, 상기 제2바디유닛(110)에 구비되며, 냉각수가 제공되는 제2용기부(131), 상기 제2용기부(131) 내부에 구비되며, 진동에 의한 초음파를 발생시켜 상기 냉각수를 안개로 형성하는 초음파발생부(132) 및 상기 제2용기부(131)의 상측에 구비되며, 형성된 안개를 상기 강판(S)이 제공되는 위치로 유도하는 안개가이드부(133)를 포함할 수 있다.In other words, the ultrasonic unit 130 of the plated steel sheet second cooling device 100 according to an embodiment of the present invention is provided in the second body unit 110, the second container portion (10) provided with cooling water ( 131, which is provided inside the second container part 131, is provided on an upper side of the ultrasonic generator 132 and the second container part 131 that generate ultrasonic waves by vibration to form fog as the cooling water. It may include a mist guide portion 133 to guide the formed mist to the position where the steel sheet (S) is provided.
상기 제2용기부(131)는 상기 초음파발생부(132)에서 진동을 발생시키면 안개로 형성될 냉각수가 제공되는 구성으로써, 상기 제2바디유닛(110)에 구비된다.The second container part 131 is configured to provide a coolant to be formed as a fog when the ultrasonic generator 132 generates vibration, and is provided in the second body unit 110.
그리고, 상기 제2용기부(131)에는 외부에서 냉각수(W)가 공급될 배관이 연결되게 제공될 수 있다.In addition, a pipe to which the coolant (W) is to be supplied from the outside may be connected to the second container part 131.
상기 초음파발생부(132)는 상기 냉각수를 안개로 형성하기 위한 초음파 진동을 형성하는 역할을 하게 되며, 상기 냉각수가 제공되는 제2용기부(131) 내부에 제공된다.The ultrasonic generator 132 serves to form ultrasonic vibrations for forming the cooling water into fog, and is provided inside the second container part 131 provided with the cooling water.
그리고, 상기 초음파발생부(132)는 초음파 진동을 형성하기 위해서, 전압원과 전기적으로 연결되고, 전압원에서 공급되는 전기에너지를 진동에너지로 변경하는 금속, 수정, 세라믹스 등의 소재로 형성된다.In addition, the ultrasonic generator 132 is formed of a material such as metal, quartz, ceramics, and the like, which are electrically connected to a voltage source and change electrical energy supplied from the voltage source into vibration energy in order to form ultrasonic vibration.
상기 안개가이드부(133)는 상기 초음파발생부(132)에서 제공하는 초음파 진동에 의해서, 상기 제2용기부(131)에 제공되는 냉각수가 안개로 형성되면, 이를 상기 슬릿노즐부(112)로 유동하게 가이드하는 역할을 하게 된다.The mist guide part 133 is formed by the mist of the cooling water provided to the second container part 131 by the ultrasonic vibration provided by the ultrasonic generator 132, it is to the slit nozzle part 112 It is to guide the movement.
이를 위해서, 상기 안개가이드부(133)는 상기 제2용기부(131)의 상단부에 캡(cap) 형상으로 구비되며, 상기 슬릿노즐부(112)를 향하는 방향으로 홀이 형성되며, 홀의 주변부에는 상기 슬릿노즐부(112)를 향하여 연장된 플랜지가 형성된다.To this end, the fog guide portion 133 is provided in a cap shape on the upper end of the second container portion 131, the hole is formed in the direction toward the slit nozzle portion 112, the peripheral portion of the hole A flange extending toward the slit nozzle part 112 is formed.
특히, 상기 안개가이드부(133)와 상기 슬릿노즐부(112) 사이에는 안개 입자의 크기를 조정하기 위한 후술할 필터유닛(140)이 구비되어, 상기 슬릿노즐부(112)로 제공되는 안개 입자의 크기를 제어하게 된다.In particular, between the mist guide unit 133 and the slit nozzle unit 112 is provided with a filter unit 140 to be described later for adjusting the size of the mist particles, the mist particles provided to the slit nozzle unit 112 Will control the size of.
도 6은 본 발명의 도금강판 제2냉각장치(100)에서 가스분사유닛(120)의 기온조절부(122)가 가스공급부(121)의 외부에 구비된 실시예를 도시한 정면도로서, 이를 참조하면, 본 발명의 일 실시예에 따른 도금강판 제2냉각장치(100)의 상기 가스분사유닛(120)은, 상기 제2바디유닛(110)에 구비되며, 외부에서 가스(A)를 전달받아 상기 강판(S)으로 분사하는 가스공급부(121) 및 상기 가스공급부(121)에 구비되며, 상기 가스(A)의 온도를 조절하게 제공되는 기온조절부(122)를 포함할 수 있다.FIG. 6 is a front view illustrating an embodiment in which the temperature control unit 122 of the gas injection unit 120 is provided outside the gas supply unit 121 in the second cooling device 100 of the present invention. When the gas injection unit 120 of the plated steel sheet second cooling device 100 according to an embodiment of the present invention, the second body unit 110 is provided, receives the gas (A) from the outside The gas supply unit 121 and the gas supply unit 121 to spray to the steel sheet (S) may include a temperature control unit 122 provided to adjust the temperature of the gas (A).
즉, 가스(A) 분사에 의한 냉각 효율을 높이기 위해서 가스(A)의 온도를 저온 또는 고온으로 조정할 수 있는 기온조절부(122)를 포함할 수 있는 것이다.That is, in order to increase the cooling efficiency by the gas (A) injection may include a temperature control unit 122 that can adjust the temperature of the gas (A) to low or high temperature.
상기 가스공급부(121)는 상기 슬릿노즐부(112)로 가스(A)를 제공하는 역할을 하며, 상기 가스공급부(121)는 외부에서 고압의 가스(A)를 전달받을 수 있다. 이를 위해서, 상기 가스공급부(121)에는 가스(A)를 전달받기 위해서 배관으로 연결될 수 있다. 여기서의 가스(A)는 공기일 수 있다.The gas supply part 121 serves to provide the gas A to the slit nozzle part 112, and the gas supply part 121 may receive the high pressure gas A from the outside. To this end, the gas supply unit 121 may be connected to the pipe in order to receive the gas (A). The gas A here may be air.
그리고, 상기 기온조절부(122)는 상기 가스공급부(121)에서 제공하는 가스(A)의 온도를 조절하는 역할을 하며, 일례로 상기 가스(A)를 저온으로 형성하기 위한 냉각관으로 제공될 수 있다.In addition, the temperature control unit 122 serves to control the temperature of the gas A provided by the gas supply unit 121, for example, to be provided as a cooling tube for forming the gas A at a low temperature. Can be.
여기서, 상기 기온조절부(122)는 상기 가스공급부(121)의 내부에 구비됨으로써, 상기 가스공급부(121)에서 제공하는 가스(A)와 직접 접촉하여 가스(A)의 온도 제어 효율을 높일 수 있는데, 이에 대한 일례는 도 5에 도시되어 있다.Here, the temperature control unit 122 is provided inside the gas supply unit 121, thereby directly contacting the gas (A) provided from the gas supply unit 121 to increase the temperature control efficiency of the gas (A). One example of this is shown in FIG. 5.
반대로, 상기 기온조절부(122)가 상기 가스공급부(121)의 외부에 구비될 수도 있는데, 이러한 경우에는 상기 가스공급부(121) 내부를 유동하는 가스(A)의 유로를 차단하지 않기 때문에, 상기 가스(A)의 유속을 유지할 수 있게 된다. 이에 대한 일례가 도 6에 도시되어 있다.On the contrary, the temperature control unit 122 may be provided outside the gas supply unit 121. In this case, since the flow path of the gas A flowing inside the gas supply unit 121 is not blocked, The flow velocity of the gas A can be maintained. An example of this is shown in FIG. 6.
그리고, 여기서 상기 기온조절부(122)가 배치된 가스공급부(121)의 영역은 가스(A)와 상기 기온조절부(122) 사이의 열교환이 충분히 이루어질 수 있는 영역의 크기로 구비될 수 있다.In this case, the region of the gas supply unit 121 in which the temperature control unit 122 is disposed may be provided as a size of an area in which heat exchange between the gas A and the temperature control unit 122 may be sufficiently performed.
더하여, 상기 가스분사유닛(120)은 가스량조절부(123)를 더 구비함으로써, 외부에서 상기 가스공급부(121)로 전달되는 가스의 량을 조정하게 구성될 수 있다.In addition, the gas injection unit 120 may further include a gas amount adjusting unit 123 to adjust the amount of gas delivered from the outside to the gas supply unit 121.
즉, 본 발명의 일 실시예에 따른 도금강판 제2냉각장치(100)의 상기 가스분사유닛(120)은, 상기 가스공급부(121)에 구비되며, 외부에서 전달되는 가스의 유량을 조정하게 제공되는 가스량조절부(123)를 포함할 수 있다.That is, the gas injection unit 120 of the plated steel sheet second cooling device 100 according to an embodiment of the present invention, is provided in the gas supply unit 121, provided to adjust the flow rate of the gas delivered from the outside The gas amount adjusting unit 123 may be included.
여기서, 상기 가스량조절부(123)가 구비되는 것은 상기 제2바디유닛(110)의 슬릿노즐부(112)에서 상기 강판(S)으로 분사되는 가스의 량을 조절할 수 있는 것은 물론, 상기 초음파유닛(130)에서 형성되는 안개의 량과 대비하여, 설정되는 냉각능을 조정하여, 목적한 온도로 상기 강판(S)의 도금용액을 냉각하기 위한 것이다.Here, the gas amount adjusting unit 123 is provided to control the amount of gas injected from the slit nozzle portion 112 of the second body unit 110 to the steel sheet (S), of course, the ultrasonic unit In contrast to the amount of fog formed in 130, the cooling capacity is set to adjust the cooling solution of the steel plate (S) at the desired temperature.
도 7은 본 발명의 도금강판 제2냉각장치(100)를 도시한 사시도로서, 이를 참조하면, 본 발명의 일 실시예에 따른 도금강판 제2냉각장치(100)의 상기 제2바디유닛(110)은, 상기 강판(S)의 이동경로 상에 구비되는 제2프레임부(111) 및 상기 강판(S)과 대면하는 상기 제2프레임부(111)의 전단부에 구비되며, 상기 가스분사유닛(120)에서 제공하는 가스(A)와 상기 초음파유닛(130)에서 제공하는 안개를 상기 강판(S)으로 분사하도록, 적어도 상기 강판(S)의 폭보다 큰 폭으로 제공되는 슬릿노즐부(112)를 포함할 수 있다.FIG. 7 is a perspective view illustrating a plated steel sheet second cooling device 100 of the present invention, and referring to this, the second body unit 110 of the plated steel plate second cooling device 100 according to an embodiment of the present invention. ) Is provided at the front end portion of the second frame portion 111 provided on the moving path of the steel sheet S and the second frame portion 111 facing the steel sheet S, and the gas injection unit Slit nozzle unit 112 provided with a width larger than the width of the steel sheet (S) at least so as to spray the gas (A) provided from the 120 and the mist provided by the ultrasonic unit 130 to the steel sheet (S). ) May be included.
이와 같이 상기 제2바디유닛(110)이 제2프레임부(111), 슬릿노즐부(112)를 포함하는 것은, 상기 가스분사유닛(120)에서 제공하는 가스(A)와 상기 초음파유닛(130)에서 제공하는 냉각수 안개를 도금용액(L)이 입혀진 강판(S)으로 함께 분사하는 역할을 하기 위한 것이다.As such, the second body unit 110 includes the second frame part 111 and the slit nozzle part 112. The gas A and the ultrasonic unit 130 provided by the gas injection unit 120 are provided. The cooling water mist provided by) is to serve to spray together the steel plate (S) coated with the plating solution (L).
상기 제2프레임부(111)는 상기 가스분사유닛(120), 초음파유닛(130)이 구비되는 기본 구성이고, 상기 슬릿노즐부(112)는 가스(A)와 안개를 미응고된 도금용액(L) 상으로 분사하는 역할을 하게 된다.The second frame portion 111 is a basic configuration is provided with the gas injection unit 120, the ultrasonic unit 130, the slit nozzle portion 112 is a plating solution uncoagulated gas (A) and fog ( L) to spray onto the phase.
상기 슬릿노즐부(112)는 상기 강판(S)의 폭보다 큰 폭으로 긴 홀 형상으로 형성되어 제공됨으로써, 상기 강판(S)의 폭 방향으로 균일하게 가스(A) 및 안개 입자를 분사하여 미응고 도금용액(L)에 대한 냉각을 균일하게 수행할 수 있게 구성된다.The slit nozzle part 112 is formed in a long hole shape having a width larger than the width of the steel sheet S, thereby uniformly injecting the gas (A) and mist particles in the width direction of the steel sheet (S) It is configured to uniformly perform cooling of the solidification plating solution (L).
도 8은 본 발명의 도금강판 제2냉각장치(100)에서 제2바디유닛(110)이 제2가스커튼부(113)를 포함하는 실시예를 도시한 정면도로서, 이를 참조하면, 본 발명의 일 실시예에 따른 도금강판 제2냉각장치(100)의 상기 제2바디유닛(110)은, 상기 슬릿노즐부(112)의 주변부에 구비되며, 분사되는 상기 가스(A)와 안개를 상기 강판(S)으로 유도하는 제2가스커튼부(113)를 포함할 수 있다.8 is a front view showing an embodiment in which the second body unit 110 includes a second gas curtain portion 113 in the second cooling apparatus 100 of the plated steel sheet according to the present invention. The second body unit 110 of the plated steel sheet second cooling device 100 according to an embodiment is provided in the periphery of the slit nozzle part 112, the gas (A) and the mist sprayed on the steel sheet It may include a second gas curtain portion 113 leading to (S).
이와 같이 상기 제2바디유닛(110)이 제2가스커튼부(113)를 포함하는 것은, 상기 가스분사유닛(120)에서 제공하는 가스(A)와 상기 초음파유닛(130)에서 제공하는 냉각수 안개가 상기 강판(S)에 입혀진 도금용액(L)으로 분사될 때, 분사되는 위치를 제어하기 위한 것이다.As such, the second body unit 110 includes the second gas curtain part 113, the gas A provided by the gas injection unit 120 and the cooling water mist provided by the ultrasonic unit 130. When it is injected into the plating solution (L) coated on the steel sheet (S), it is for controlling the spraying position.
이를 위해서, 상기 제2가스커튼부(113)는 상기 슬릿노즐부(112)의 주변부에 구비될 수 있으며, 바람직하게는 상기 슬릿노즐부(112)의 주변부를 감싸는 형태로 구비될 수 있다.To this end, the second gas curtain portion 113 may be provided at the periphery of the slit nozzle portion 112, preferably may be provided in a form surrounding the periphery of the slit nozzle portion 112.
그리고, 상기 제2가스커튼부(113)가 가스커튼(또는 에어커튼)을 형성하기 위해서, 외부에서 가스(A)가 제공되는 배관이 형성될 수 있으며, 여기서의 가스(A)는 공기일 수 있다. 이와 같이 외부에서 전달받은 가스(A)를 상기 슬릿노즐부(112)의 주변부에서 분사함으로써, 상기 슬릿노즐부(112)에서 분사하는 가스(A)와 안개 입자의 경로를 제어할 수 있게 된다.In addition, in order for the second gas curtain part 113 to form a gas curtain (or air curtain), a pipe provided with a gas A from the outside may be formed, and the gas A may be air. have. In this way, by injecting the gas (A) received from the outside from the peripheral portion of the slit nozzle unit 112, it is possible to control the path of the gas (A) and the mist particles sprayed from the slit nozzle unit (112).
도 9는 본 발명의 도금강판 제2냉각장치(100)에서 필터유닛(140)의 작동 상태를 도시한 정면도로서, 이를 참조하면, 본 발명의 일 실시예에 따른 도금강판 제2냉각장치(100)는 상기 제2바디유닛(110)에 구비되며, 상기 강판(S)에 분사될 안개 입자의 크기를 조정하는 필터유닛(140)을 포함할 수 있다.9 is a front view showing an operating state of the filter unit 140 in the plated steel sheet second cooling device 100 of the present invention, referring to this, the plated steel sheet second cooling device 100 according to an embodiment of the present invention. ) May be provided in the second body unit 110, and may include a filter unit 140 for adjusting the size of the mist particles to be sprayed onto the steel sheet (S).
다시 말해, 상기 필터유닛(140)은 초음파유닛(130)에 의해 형성된 안개 입자의 크기에 따른 이동 관성력의 차이를 이용하여, 도금층으로 분사될 안개 입자의 크기를 조정할 수 있는 것이다.In other words, the filter unit 140 may adjust the size of the mist particles to be sprayed to the plating layer by using a difference in the moving inertia force according to the size of the mist particles formed by the ultrasonic unit 130.
이를 위해서, 상기 필터유닛(140)은 필터프레임부(141), 조절판부(142)를 구비할 수 있다. 즉, 본 발명의 일 실시예에 따른 도금강판 제2냉각장치(100)의 상기 필터유닛(140)은, 상기 초음파유닛(130)에서 형성된 안개의 유동경로 상에 제공되며, 상기 제2바디유닛(110)에 결합되어 제공되는 필터프레임부(141), 상기 필터프레임부(141)에 구비되며, 일부 안개 입자의 유동 경로는 변경하게 구비되고 나머지 안개 입자는 이동 관성력에 의해 충돌하게 구비되는 조절판부(142)를 포함할 수 있다.To this end, the filter unit 140 may be provided with a filter frame portion 141, the adjusting plate portion 142. That is, the filter unit 140 of the plated steel sheet second cooling device 100 according to an embodiment of the present invention is provided on the flow path of the fog formed in the ultrasonic unit 130, the second body unit Filter frame unit 141 is provided coupled to the 110, provided in the filter frame unit 141, the flow path of some of the fog particles are provided to change and the other fog particles are provided to collide with the moving inertia force It may include a portion 142.
여기서, 상기 필터프레임부(141)는 필터유닛(140)의 기본 프레임으로써, 상기 제2바디유닛(110)에 구비되며, 더 구체적으로는 상기 초음파유닛(130)에서 형성된 안개가 배출되는 상기 안개가이드부(133)와 상기 슬릿노즐부(112) 사이에 구비된다.Here, the filter frame unit 141 is a basic frame of the filter unit 140, which is provided in the second body unit 110, more specifically, the mist discharged from the ultrasonic unit 130 is discharged It is provided between the guide portion 133 and the slit nozzle portion 112.
상기 조절판부(142)는 상기 필터프레임부(141)에 구비되어, 상기 필터프레임부(141)를 관통하여 유동하는 안개 입자의 유동 경로를 일부 변경하게 구성된다. 다시 말해, 상기 조절판부(142)가 상기 안개 입자의 유동 경로를 일부 변경하게 구성되면, 유동하던 안개 입자 중에서 이동 관성력이 비교적 큰 입자들(be)은 유동 경로를 변경하지 못하거나, 일부의 유동 경로만 변경하게 됨으로써, 상기 조절판부(142)에 충돌하게 된다. The adjusting plate part 142 is provided in the filter frame part 141 and is configured to partially change the flow path of the fog particles flowing through the filter frame part 141. In other words, when the throttle plate 142 is configured to partially change the flow path of the fog particles, particles (be) having a relatively large moving inertia force among the flowing fog particles do not change the flow path, or partially flow. By changing only the path, it will collide with the control plate 142.
이에 따라 충돌된 입자들(be)은 상기 슬릿노즐부(112)로 이동하지 못하고, 상기 조절판부(142)에 누적됨에 따라 입자 크가가 점점 커져서 상기 제2용기부(131)로 낙하게 된다.Accordingly, the collided particles (be) do not move to the slit nozzle portion 112, and as the cumulative particle size increases as the accumulation plate portion 142 is gradually dropped to the second vessel portion 131. .
반면에, 유동하던 안개 입자 중에서 이동 관성력이 비교적 작은 입자들(se)은 상기 조절판부(142)와 충돌하지 않을 만큼 충분히 유동 경로를 변경하여 이동함에 따라 상기 조절판부(142)에 충돌하지 않고 상기 슬릿노즐부(112)로 이동할 수 있게 된다.On the other hand, the particles se of relatively small moving inertia force among the flowing mist particles do not collide with the throttle plate 142 as the flow path is changed enough to not collide with the throttle plate 142. The slit nozzle unit 112 can be moved.
한편, 이동 관성력은 입자의 질량에 비례하는 값이기 때문에, 상기 슬릿노즐부(112)로 제공할 안개 입자의 크기를 조정할 수 있게 된다.On the other hand, since the moving inertia force is a value proportional to the mass of the particles, the size of the mist particles to be provided to the slit nozzle unit 112 can be adjusted.
이를 위해서, 상기 조절판부(142)는 상기 필터프레임부(141)에 일정 간격으로 복수 개가 구비될 수 있다.To this end, the control plate 142 may be provided in plurality in the filter frame portion 141 at a predetermined interval.
즉, 본 발명의 일 실시예에 따른 도금강판 제2냉각장치(100)의 상기 조절판부(142)는, 상기 필터프레임부(141)에 복수 개가 일정 간격으로 구비되는 것을 특징으로 할 수 있다.That is, the control plate portion 142 of the plated steel sheet second cooling device 100 according to an embodiment of the present invention, the filter frame portion 141 may be provided with a plurality of predetermined intervals.
이와 같은 구성에 의해서, 상기 안개가이드부(133)에서 가이드되어 제공된 안개 입자를 효율적으로 필터링할 수 있게 된다.By such a configuration, it is possible to efficiently filter the fog particles guided by the fog guide unit 133.
그리고, 본 발명의 일 실시예에 따른 도금강판 제2냉각장치(100)의 상기 조절판부(142)는, 상기 안개 입자의 유동 경로에 비스듬하게 구비되는 것을 특징으로 할 수 있다.In addition, the control plate 142 of the plated steel sheet second cooling device 100 according to an embodiment of the present invention may be characterized by being provided obliquely in the flow path of the mist particles.
이와 같이 상기 조절판을 상기 안개 입자의 유동 경로에 비스듬하게 구비시키는 이유는, 상기 안개 입자의 유동 경로의 변경 정도를 조정하기 위한 것이다.Thus, the reason why the control plate is provided obliquely in the flow path of the fog particles is to adjust the degree of change of the flow path of the fog particles.
다시 말해, 상기 조절판의 비스듬한 정도가 크면 상기 안개 입자의 유동 경로의 변경율이 더 커지기 때문에, 비교적 작은 입자만이 통과하여 상기 슬릿노즐부(112)로 공급되게 되며, 비스듬한 정도가 작으면 상기 안개 입자의 유동 경로의 변경율이 작기 때문에, 비교적 큰 입자들까지 통과하여 상기 슬릿노즐부(112)로 공급될 수 있게 제어할 수 있다.In other words, if the oblique degree of the throttle plate is large, the rate of change of the flow path of the mist particles is larger, so that only relatively small particles pass through the slit nozzle part 112, and if the oblique degree is small, the fog is small. Since the rate of change of the flow path of the particles is small, it can be controlled to pass to the relatively large particles to be supplied to the slit nozzle portion 112.
이러한 조절판의 비스듬한 정도를 변경하기 위해서, 비스듬한 정도가 다른 필터유닛(140)으로 교체하게 구성될 수도 있으나, 상기 조절판의 각도를 조정하게 각도조절모터 등으로 연계하게 구성될 수도 있다.In order to change the oblique degree of the control panel, the oblique degree may be configured to replace the other filter unit 140, but may be configured to be connected to the angle control motor to adjust the angle of the control panel.
본 발명의 또 다른 실시예에 따른 도금강판 냉각방법은 강판(S)에 도금용액(L)을 입히는 도금 공정과, 상기 강판(S)에 뭍은 도금용액(L)의 두께를 조정하는 와이핑 공정과, 냉각 공정을 포함하고, 상기 냉각 공정은, 상기 강판(S)에 냉각수를 분사하여 냉각하되, 상기 냉각수는 대전된 상태로 분사하는 것을 특징으로 할 수 있다.Plating steel sheet cooling method according to another embodiment of the present invention is a plating process of coating the plating solution (L) on the steel sheet (S), and the wiping to adjust the thickness of the plating solution (L) thinned on the steel sheet (S) And a cooling step, wherein the cooling step is performed by spraying cooling water onto the steel sheet S, and cooling the sprayed water in a charged state.
구체적으로, 본 발명의 또 다른 실시예에 따른 도금강판 냉각방법의 상기 냉각 공정은, 도금용액(L)이 입혀진 강판(S)에 대하여 냉각을 수행하는 선냉각단계 및 상기 선냉각단계에서 냉각되는 도금된 강판(S)에 대하여 대전에 의해 동일한 극성이 부여된 냉각수를 분사하여 냉각하는 후냉각단계를 포함할 수 있다.Specifically, the cooling step of the plated steel sheet cooling method according to another embodiment of the present invention, the pre-cooling step for performing cooling for the steel plate (S) coated with the plating solution (L) is cooled in the pre-cooling step It may include a post-cooling step of cooling by spraying the cooling water given the same polarity by the charging to the plated steel sheet (S).
여기서 상기 도금 공정은 상기 도금조(300)를 상기 강판(S)이 상기 포트롤(400) 등에 의해 지지되면서 이동하여 수행되게 된다. The plating process is performed by moving the plating bath 300 while the steel sheet S is supported by the pot roll 400 or the like.
즉, 상기 도금 공정에서는 도금용액(L)이 담겨진 상기 도금조(300) 내부를 상기 강판(S)이 통과하면서 상기 강판(S)의 외면에 도금용액(L)을 입힐 수 있는 것이다.That is, in the plating process, the plating solution L may be coated on the outer surface of the steel sheet S while the steel sheet S passes through the plating bath 300 in which the plating solution L is contained.
상기 와이핑 공정은, 상기 도금 공정에서 강판(S)에 도금용액(L)이 도포된 상태에서 배출되면, 공기 등의 가스를 분사하여 상기 강판(S)에 도포된 도금용액(L)의 두께를 조정하여 최종 형성될 도금층의 두께를 조정하게 되는 과정이다. In the wiping process, when the plating solution L is discharged in a state in which the plating solution L is applied to the steel plate S in the plating process, the thickness of the plating solution L applied to the steel plate S by spraying gas such as air may be used. The process of adjusting the thickness of the plating layer to be finally formed by adjusting the.
그리고, 상기 선냉각단계는 상기 도금조(300)에서 배출되어 상기 와이핑 공정을 통과한 강판(S)에 대하여 냉각을 수행하는 단계로써, 상기 제2냉각장치(100)를 이용하여 아직 용융 상태의 도금용액(L)에 대하여 냉각을 수행하기 때문에, 응고시의 움푹 패인 피트마크 등이 발생하는 것을 방지하기 위해서, 가스를 분사하게 되며, 더하여 냉각능을 높이기 위해서 초음파 진동으로 냉각수의 미세화된 형태인 안개를 함께 분사하게 된다. The pre-cooling step is a step of cooling the steel sheet S discharged from the plating bath 300 and passing through the wiping process, and still in the molten state by using the second cooling device 100. Since cooling is performed on the plating solution L, the gas is sprayed in order to prevent the formation of the recessed pit marks during solidification, and in addition, micronized form of the cooling water by ultrasonic vibration in order to increase the cooling capacity. The mist is sprayed together.
즉, 본 발명의 또 다른 실시예에 따른 도금강판 냉각방법의 상기 선냉각단계는, 적어도 상기 도금용액(L)의 용융온도보다 높은 온도로 형성된 강판(S) 표면상의 도금용액(L)에 대하여 가스와 초음파 진동으로 형성된 안개를 함께 분사하여 냉각을 수행하며, 적어도 상기 도금용액(L)의 용융온도보다 낮은 온도로 상기 도금용액(L)을 냉각하여 상기 후냉각단계로 전달하는 것을 특징으로 할 수 있다.That is, the pre-cooling step of the plated steel sheet cooling method according to another embodiment of the present invention, at least for the plating solution (L) on the surface of the steel sheet (S) formed at a temperature higher than the melting temperature of the plating solution (L) Cooling is performed by spraying the gas and the mist formed by ultrasonic vibration together, and cooling the plating solution (L) at a temperature lower than the melting temperature of the plating solution (L) to be delivered to the post-cooling step. Can be.
이에 의해서, 상기 선냉각단계에서는 가스만을 분사할 때보다 냉각능을 높이면서도 상기 도금용액(L)이 응고되면서 형성될 수 있는 피트마크의 형성을 방지하게 된다.As a result, in the pre-cooling step, the pit mark may be prevented from being formed while the plating solution L is solidified while increasing the cooling ability than when only gas is injected.
다시 말해, 상기 후냉각단계는 초음파 진동에 의해서 미세화된 안개를 분사하는 것이 아니기 때문에, 상기 도금용액(L)이 응고 이후에 수행되지 않으면, 상기 도금용액(L)에 의해 형성되는 도금층에 피트마크가 형성될 수 있기 때문에, 상기 선냉각단계에서는 적어도 상기 도금용액(L)의 용융온도보다 낮은 온도로 상기 도금용액(L)을 냉각하여 상기 후냉각단계로 전달해야 하는 것이다.In other words, since the post-cooling step is not spraying the mist miniaturized by the ultrasonic vibration, if the plating solution (L) is not performed after solidification, the pit mark on the plating layer formed by the plating solution (L) In the precooling step, the plating solution L should be cooled to a temperature lower than the melting temperature of the plating solution L and transferred to the post-cooling step.
상기 후냉각단계는 상기 선냉각단계에서 상기 제2냉각장치(100)를 이용하여 1차로 도금용액(L)과 강판(S)을 냉각하면, 상기 제1냉각장치(200)를 이용하여 2차로 도금용액(L)과 강판(S)을 냉각하게 된다.The post-cooling step is to cool the plating solution (L) and the steel sheet (S) first by using the second cooling device 100 in the pre-cooling step, the second cooling using the first cooling device (200) The plating solution L and the steel sheet S are cooled.
특히, 상기 후냉각단계에서는 적어도 상기 도금용액(L)의 용융온도보다 낮은 온도로 냉각된 도금층을 상기 선냉각단계로 전달받아 냉각을 수행하기 때문에, 상기 도금층에 피트 마크가 형성되는 문제를 고려할 필요가 없어, 냉각수를 미세화하지 않고 분사하면서 냉각할 수 있게 된다.In particular, in the post-cooling step, since the plated layer cooled to a temperature lower than at least the melting temperature of the plating solution L is transferred to the pre-cooling step to perform cooling, it is necessary to consider the problem of forming a pit mark on the plated layer. It is possible to cool while spraying without minimizing the cooling water.
더하여, 본 발명의 다른 실시예에 따른 도금강판 냉각방법의 상기 후냉각단계는, 상기 선냉각단계에서 적어도 상기 도금용액의 용융온도보다 낮은 온도로 냉각된 도금된 강판을 전달받아, 상기 강판에 대하여 대전에 의해 극성이 부여된 냉각수를 분사하여 냉각을 수행하는 것을 특징으로 할 수 있다.In addition, the post-cooling step of the plated steel sheet cooling method according to another embodiment of the present invention, receiving the plated steel sheet cooled to a temperature lower than the melting temperature of the plating solution at least in the pre-cooling step, with respect to the steel sheet Cooling may be performed by spraying cooling water imparted with polarity by charging.
이에 의해서, 상기 강판(S) 또는 도금층에 대한 상기 냉각수의 부착력을 높여서 냉각능을 높일 수 있게 된다.Thereby, it becomes possible to raise the adhesive force of the said cooling water with respect to the said steel plate S or a plating layer, and to raise a cooling ability.

Claims (19)

  1. 도금강판에 냉각수를 분사하는 냉각수분사유닛;Cooling water injection unit for injecting the cooling water to the plated steel sheet;
    상기 냉각수분사유닛의 적어도 일측에 배치되어, 상기 냉각수를 대전하는 대전유닛;A charging unit disposed on at least one side of the cooling water injection unit to charge the cooling water;
    을 포함하며, Including;
    상기 냉각수분사유닛은, 상기 냉각수가 상기 대전유닛에 의해 대전된 상태로 분사되도록 설치된 것을 특징으로 하는 도금강판 제1냉각장치.The cooling water spraying unit is a plated steel sheet first cooling device, characterized in that the cooling water is installed to be injected in a state charged by the charging unit.
  2. 제1항에 있어서,The method of claim 1,
    상기 냉각수분사유닛은,The cooling water injection unit,
    냉각수를 수용하는 제1용기부;A first container part accommodating cooling water;
    상기 제1용기부와 연결되며, 상기 냉각수가 이동하는 유로부; 및A flow path part connected to the first container part and to which the coolant moves; And
    상기 유로부와 연결되어 상기 제1용기부에서 냉각수를 전달받으며, 상기 도금강판으로 상기 냉각수를 분사하는 노즐부;A nozzle part connected to the flow path part to receive the coolant from the first container part, and spray the coolant to the plated steel sheet;
    를 포함하는 도금강판 제1냉각장치.Plated steel sheet first cooling device comprising a.
  3. 제2항에 있어서,The method of claim 2,
    상기 제1용기부는, 그라운드에 접지되는 것을 특징으로 하는 도금강판 제1냉각장치.The first container is a plated steel sheet first cooling device, characterized in that grounded.
  4. 제2항에 있어서,The method of claim 2,
    상기 대전유닛은,The charging unit,
    정전하가 인가되어 전기장을 형성하는 전극부;An electrode portion to which an electrostatic charge is applied to form an electric field;
    를 포함하고, Including,
    상기 유로부는 상기 전극부와 교차하도록 배치되는 것을 특징으로 하는 도금강판 제1냉각장치.The flow path portion is plated steel sheet first cooling device, characterized in that arranged to intersect with the electrode portion.
  5. 제4항에 있어서,The method of claim 4, wherein
    상기 전극부는, 상기 유로부의 상하측에 배치되는 것을 특징으로 하는 도금강판 제1냉각장치.The electrode unit, the first cooling device of the plated steel sheet, characterized in that disposed in the upper and lower sides of the flow path.
  6. 제4항에 있어서,The method of claim 4, wherein
    상기 대전유닛은,The charging unit,
    상기 전극부를 지지하는 전극지지부;An electrode support part supporting the electrode part;
    를 더 포함하고, More,
    상기 전극지지부는, 상기 제1용기부가 형성되어 있는 제1바디유닛의 전방에, 상기 제1바디유닛과 일체로 또는 결합되도록 설치되는 것을 특징으로 하는 도금강판 제1냉각장치.The electrode support portion is plated steel sheet first cooling device, characterized in that installed in front of the first body unit, the first container unit is formed to be integrally or coupled with the first body unit.
  7. 제2항에 있어서,The method of claim 2,
    상기 노즐부는, 상기 냉각수를 액적 형태로 분무하는 것을 특징으로 하는 도금강판 제1냉각장치.The nozzle unit is a plated steel sheet first cooling device, characterized in that for spraying the cooling water in the form of droplets.
  8. 제2항에 있어서,The method of claim 2,
    상기 노즐부는, 상기 도금강판의 폭 방향으로 복수 개가 구비되는 것을 특징으로 하는 도금강판 제1냉각장치.The nozzle unit is plated steel sheet first cooling device, characterized in that a plurality of the plated steel plate is provided in the width direction.
  9. 제2항에 있어서,The method of claim 2,
    상기 냉각수분사유닛은,The cooling water injection unit,
    상기 노즐부와 연통되며, 상기 냉각수에 분사압을 부여하도록 가스를 제공하는 분사압제공부;An injection pressure providing unit communicating with the nozzle unit and providing a gas to impart an injection pressure to the cooling water;
    를 더 포함하는 도금강판 제1냉각장치.Plated steel sheet first cooling device further comprising.
  10. 제2항에 있어서,The method of claim 2,
    상기 노즐부의 주변부에 구비되며, 분사되는 상기 냉각수를 상기 강판으로 유도하는 제1가스커튼부;A first gas curtain part provided at a periphery of the nozzle part to guide the injected cooling water to the steel sheet;
    를 더 포함하는 도금강판 제1냉각장치.Plated steel sheet first cooling device further comprising.
  11. 도금조; 및Plating bath; And
    상기 도금조에서 배출된 도금강판의 이동 경로 상에 제공되는, 제1항 내지 제10항 중 어느 한 항의 도금강판 제1냉각장치;Claim 1 to 10 of the plated steel sheet provided on the movement path of the plated steel sheet discharged from the plating bath;
    를 포함하는 도금설비.Plating equipment comprising a.
  12. 제11항에 있어서,The method of claim 11,
    상기 도금조와 상기 제1냉각장치 사이의 상기 강판 이동 경로 상에 구비되는 도금강판 제2냉각장치;A plated steel sheet second cooling device provided on the steel plate moving path between the plating bath and the first cooling device;
    를 포함하는 도금설비.Plating equipment comprising a.
  13. 제12항에 있어서,The method of claim 12,
    상기 제2냉각장치는, 초음파 진동에 의해서 냉각수를 안개로 형성하여 가스와 함께 상기 강판에 분사하는 것을 특징으로 하는 도금설비.The second cooling device, the plating equipment, characterized in that the cooling water is formed into a mist by the ultrasonic vibration and sprayed on the steel plate with gas.
  14. 제13항에 있어서,The method of claim 13,
    상기 제2냉각장치는,The second cooling device,
    상기 강판으로 가스를 분사하는 가스분사유닛;A gas injection unit for injecting gas into the steel sheet;
    냉각수를 안개로 형성하여 상기 가스분사유닛에서 분사되는 가스를 따라 상기 강판에 분사시키는 초음파유닛; 및Ultrasonic unit for forming a cooling water in the mist to spray the steel sheet along the gas injected from the gas injection unit; And
    상기 초음파유닛에서 형성된 안개 및 상기 가스분사유닛에서 분사되는 가스의 이동 경로 상에 구비되는 필터유닛;A filter unit provided on the movement path of the mist formed in the ultrasonic unit and the gas injected from the gas injection unit;
    을 포함하는 도금설비.Plating equipment comprising a.
  15. 제14항에 있어서,The method of claim 14,
    상기 필터유닛은, 상기 강판에 분사될 안개 입자의 크기를 조정하는 것을 특징으로 하는 도금설비.The filter unit, plating equipment, characterized in that for adjusting the size of the mist particles to be sprayed on the steel sheet.
  16. 제15항에 있어서,The method of claim 15,
    상기 필터유닛은,The filter unit,
    상기 초음파유닛에서 형성된 안개의 유동경로 상에 제공되는 필터프레임부; 및A filter frame part provided on the flow path of the fog formed in the ultrasonic unit; And
    상기 필터프레임부에 구비되며, 일부 안개 입자의 유동 경로는 변경하게 구비되고 나머지 안개 입자는 이동 관성력에 의해 충돌하게 구비되는 조절판부;A control plate part provided in the filter frame part and configured to change a flow path of some fog particles and collide with the other fog particles by a moving inertia force;
    를 포함하는 도금설비.Plating equipment comprising a.
  17. 제16항에 있어서,The method of claim 16,
    상기 조절판부는, 상기 필터프레임부에 복수 개가 일정 간격으로 구비되고, 상기 안개 입자의 유동 경로에 비스듬하게 구비되는 것을 특징으로 하는 도금설비.The adjusting plate portion, the filter frame portion is provided with a plurality at regular intervals, the plating equipment, characterized in that provided in the flow path of the fog particles obliquely.
  18. 강판에 도금용액을 입히는 도금 공정과, 상기 강판에 뭍은 도금용액의 두께를 조정하는 와이핑 공정과, 냉각 공정을 포함하고, A plating step of coating a plating solution on the steel sheet, a wiping step of adjusting the thickness of the plating solution applied to the steel sheet, and a cooling step,
    상기 냉각 공정은, 상기 강판에 냉각수를 분사하여 냉각하되, 상기 냉각수는 대전된 상태로 분사하는 것을 특징으로 하는 도금강판 냉각방법.The cooling process is cooled by spraying the cooling water on the steel sheet, the cooling water is characterized in that the cooling water is sprayed in a charged state.
  19. 제18항에 있어서,The method of claim 18,
    상기 냉각 공정은,The cooling step,
    도금용액이 입혀진 강판에 대하여 냉각을 수행하는 선냉각단계; 및A precooling step of performing cooling on the steel plate coated with the plating solution; And
    상기 선냉각단계에서 냉각된 강판에 대하여 대전에 의해 동일한 극성이 부여된 냉각수를 분무하여 냉각하는 후냉각단계;A post-cooling step of spraying and cooling the cooling water imparted with the same polarity by charging the steel sheet cooled in the pre-cooling step;
    를 포함하는 도금강판 냉각방법.Plated steel sheet cooling method comprising a.
PCT/KR2017/008262 2016-07-29 2017-07-31 Plated steel plate first cooling device, plating facility, and plated steel plate cooling method WO2018021898A1 (en)

Priority Applications (3)

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EP17834838.9A EP3492619A4 (en) 2016-07-29 2017-07-31 Plated steel plate first cooling device, plating facility, and plated steel plate cooling method
MX2019001068A MX2019001068A (en) 2016-07-29 2017-07-31 Plated steel plate first cooling device, plating facility, and plated steel plate cooling method.
CN201780045895.2A CN109563604A (en) 2016-07-29 2017-07-31 The first cooling device of coated steel sheet, plating equipment and coated steel sheet cooling means

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2016-0096736 2016-07-29
KR1020160096736A KR101778457B1 (en) 2016-07-29 2016-07-29 Backwarded cooling apparatus for coated strip and coating facility
KR1020160116656A KR101795965B1 (en) 2016-09-09 2016-09-09 Coating facility and coating method
KR10-2016-0116656 2016-09-09

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