KR20200074796A - System for diminishing concentration of zinc particles splashed in galvanizing line - Google Patents

System for diminishing concentration of zinc particles splashed in galvanizing line Download PDF

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KR20200074796A
KR20200074796A KR1020180163589A KR20180163589A KR20200074796A KR 20200074796 A KR20200074796 A KR 20200074796A KR 1020180163589 A KR1020180163589 A KR 1020180163589A KR 20180163589 A KR20180163589 A KR 20180163589A KR 20200074796 A KR20200074796 A KR 20200074796A
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zinc
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steel sheet
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오종한
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주식회사 포스코
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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
    • C23C2/50—Controlling or regulating the coating processes
    • C23C2/52—Controlling or regulating the coating processes with means for measuring or sensing
    • 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
    • C23C2/003—Apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
    • 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
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/20—Metals
    • G01N33/202—Constituents thereof
    • G01N33/2028—Metallic constituents

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Abstract

Disclosed is a system for reducing concentration of zinc scattered in a plating line. The system for reducing concentration of zinc scattered in a plating line according to an exemplary embodiment of the present invention includes: an air knife which is installed on a top of a plating bath of a hot-dip galvanizing line of steel sheet, injects high-pressure air gas toward both surfaces of the steel plate that has escaped through a plating bath, and allows molten zinc attached to a surface of a steel sheet to be scattered while being sharpened; a concentration measuring sensor installed in both regions of the steel sheet and measuring the concentration of scattered zinc; and a suction unit for suctioning the scattered zinc when the measured scattering concentration of zinc exceeds a set value.

Description

도금라인의 비산아연 농도저감 시스템{SYSTEM FOR DIMINISHING CONCENTRATION OF ZINC PARTICLES SPLASHED IN GALVANIZING LINE}SYSTEM FOR DIMINISHING CONCENTRATION OF ZINC PARTICLES SPLASHED IN GALVANIZING LINE}

본 발명은 도금라인의 비산아연 농도저감 시스템에 관한 것이다.The present invention relates to a system for reducing zinc concentration in a plating line.

냉연강판 표면에 용융아연 등을 도금한 도금강판은 전자제품이나 자동차용 강판 등으로 사용되며, 고품질이 요구된다.The plated steel sheet plated with hot-dip zinc on the surface of the cold-rolled steel sheet is used as a steel plate for electronic products or automobiles, and requires high quality.

강판의 용융아연 도금라인에서, 페이 오프 릴(Pay Off Reel)에서 풀린 코일강판(냉연강판)은 용접기와 입측 루퍼를 거쳐 열처리로에서 열처리되고, 스나우트(snout)를 거쳐 용융아연이 충진된 도금조를 통과하면서 도금 처리된다.In the hot-dip galvanizing line of the steel sheet, the coiled steel sheet (cold rolled steel sheet) released from the pay-off reel is heat-treated in a heat treatment furnace through a welding machine and an entrance looper, and is filled with hot-dip zinc through a snout. It is plated while passing through the bath.

여기서, 도금조 탕면 상부에 설치된 에어나이프(air knife)에 의해 강판 표면에 고압의 에어가스가 분사되고, 강판표면에 부착된 용융아연이 깎여지면서 강판의 도금두께가 조절된다. 이때, 에어나이프의 토출구를 통해 분사되는 고속의 고압 가스에 의한 강판의 가스 와이핑 시 아연물질(가루, 입자 등)의 비산현상이 발생한다.Here, a high pressure air gas is sprayed onto the surface of the steel sheet by an air knife installed on the top surface of the bath surface of the plating bath, and the plating thickness of the steel sheet is adjusted while the molten zinc attached to the surface of the steel sheet is cut off. At this time, scattering of zinc materials (powder, particles, etc.) occurs during gas wiping of the steel sheet by high-speed high-pressure gas injected through the outlet of the air knife.

그러나, 비산된 아연이 강판에 붙게 되면, 그 두께차이로 인해 합금화 공정에서 색상 차를 유발하게 되고, 스킨 패스 밀(skin pass mill) 공정에서 압착되면서 요철형태의 결함으로 나타날 수 있다. 이러한 결함은 예컨대 자동차 프레스(press) 가공 시 도드라지면서 제품을 불량 상태로 만들 수 있다.However, when the scattered zinc adheres to the steel sheet, the difference in thickness causes a color difference in the alloying process, and may appear as a defect in the uneven shape as it is compressed in a skin pass mill process. Such defects, for example, become prominent in automobile press processing, and may make the product in a defective state.

또, 이러한 결함의 발생은 도금량을 제어하는 에어나이프의 작업조건, 강판의 사이즈, 작업 스피드 그리고 주변설비의 구성과 연계될 수 있다. 예컨대 작업 스피드가 높은 조건에서 고객사가 요구하는 도금량을 제어하기 위해 평상 시보다 에어나이프를 통해 더욱 높은 고압의 에어가스가 분사되도록 함으로써, 아연 비산의 증가 및 설비 주변 유동을 더욱 가속시키면서 강판의 결함을 증가시킬 수 있다.In addition, the occurrence of these defects can be linked to the working conditions of the air knife controlling the amount of plating, the size of the steel plate, the working speed and the configuration of peripheral equipment. For example, in order to control the amount of plating required by the customer under conditions of high working speed, higher pressure of high-pressure air gas is injected through an air knife than usual, thereby increasing the zinc scattering and accelerating the flow around the facility to prevent defects in the steel sheet Can be increased.

따라서, 종래에는 메쉬(mesh) 형태의 차단막을 마련하여 아연이 강판표면에 달라붙는 것을 방지하고자 하였으나 비효율적인 측면이 있으며, 근본적인 해결책은 되지 못하고 있다.Therefore, in the related art, a mesh-type blocking film is provided to prevent zinc from sticking to the steel sheet surface, but there is an inefficient aspect, and it is not a fundamental solution.

용융아연도금과 관련된 기술로서, 한국공개특허 제2002-0020115호(2002.03.14. 공개)를 참조하기 바란다.As a technique related to hot dip galvanizing, please refer to Korean Patent Publication No. 2002-0020115 (published on March 14, 2002).

한국공개특허 제2002-0020115호(2002.03.14. 공개)Korean Patent Publication No. 2002-0020115 (published on March 14, 2002)

본 발명의 실시 예는 비산된 아연의 농도를 효과적으로 조절하는 도금라인의 비산아연 농도저감 시스템을 제공하고자 한다.An embodiment of the present invention is to provide a zinc scattering concentration reduction system of a plating line that effectively controls the concentration of scattered zinc.

본 발명의 일 측면에 따르면, 강판의 용융아연 도금라인의 도금조 상부에 설치되며, 상기 도금조를 통과하여 빠져 나온 상기 강판의 양쪽 표면을 향해 고압의 에어가스를 각각 분사하여, 상기 강판의 표면에 부착된 용융아연이 깎이면서 비산되도록 하는 에어나이프; 상기 강판의 양쪽 영역에 각각 설치되며, 상기 비산되는 아연의 농도를 측정하는 농도측정센서; 및 상기 측정된 아연의 비산 농도가 설정값을 초과한 경우, 상기 비산된 아연을 흡입하는 흡입유닛;을 포함하는 도금라인의 비산아연 농도저감 시스템이 제공될 수 있다. According to an aspect of the present invention, it is installed on the top of the plating bath of the hot dip galvanizing line of the steel sheet, and spraying high-pressure air gas to both surfaces of the steel sheet passing through the plating bath and exiting, respectively, to surface the steel sheet An air knife that allows the molten zinc adhered to to be scattered while being cut; A concentration measurement sensor installed in both regions of the steel sheet to measure the concentration of the scattered zinc; And If the measured concentration of zinc scattering exceeds a set value, a suction unit for suctioning the scattered zinc; zinc scattering concentration reduction system of a plating line may be provided.

상기 흡입유닛은 상기 강판의 양쪽 영역에 각각 설치되어 상기 비산된 아연을 흡입하며, 상기 흡입한 비산 아연을 배출라인을 통해 배출시키는 흡입팬을 포함할 수 있다.The suction unit may be installed in both regions of the steel sheet to suck the scattered zinc, and may include a suction fan that discharges the sucked zinc through the discharge line.

상기 흡입유닛은 상기 측정된 아연의 비산 농도가 설정값을 초과한 경우 상기 흡입팬을 동작시키는 농도제어부를 더 포함할 수 있다.The suction unit may further include a concentration control unit for operating the suction fan when the measured scattering concentration of zinc exceeds a set value.

상기 측정된 아연의 비산 농도와, 상기 에어나이프와 상기 강판 표면 간의 간격, 설치 높이, 에어가스 분사 압력 중 하나 이상을 포함하는 상기 에어나이프의 작업 조건과, 도금된 강판의 생산 속도, 강판의 두께, 폭 및 도금량 중 하나 이상에 대한 데이터 값을 저장하는 데이터저장부를 더 포함하되, 상기 데이터저장부는 상기 측정된 아연의 비산 농도에 따라 조정이 이루어진 상기 데이터 값의 누적된 값을 저장할 수 있다.Working conditions of the air knife including at least one of the measured zinc scattering concentration, the gap between the air knife and the surface of the steel plate, the installation height, and the air gas injection pressure, the production speed of the plated steel sheet, and the thickness of the steel sheet , Further comprising a data storage unit for storing data values for one or more of the width and the amount of plating, the data storage unit may store the accumulated value of the data value is adjusted according to the measured scattering concentration of zinc.

본 발명의 실시 예에 따른 도금라인의 비산아연 농도저감 시스템은 비산된 아연의 농도를 효과적으로 조절할 수 있다.The zinc scattering concentration reduction system of the plating line according to an embodiment of the present invention can effectively control the concentration of scattered zinc.

아연의 비산 농도에 따라 조정이 이루어진 데이터 값의 누적된 값을 저장하여, 작업 조건을 재조정함으로써, 최적의 조건에서 에어나이프에 의한 강판의 표면에 대한 도금두께 처리 작업을 수행할 수 있다.By storing the accumulated value of the adjusted data value according to the scattering concentration of zinc and re-adjusting the working conditions, it is possible to perform the plating thickness treatment on the surface of the steel sheet by air knife under optimal conditions.

본 발명의 효과들은 이상에서 언급한 효과들로 제한되지 않으며, 언급되지 않은 또 다른 효과들은 청구범위의 기재로부터 당업자에게 명확하게 이해될 수 있을 것이다.The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

도 1은 본 발명의 실시 예에 따른 도금라인의 비산아연 농도저감 시스템을 도시한다.
도 2는 도 1의 비산아연 농도저감 시스템을 이용하여 비산된 아연을 흡입하는 모습을 나타낸다.
도 3은 도 1의 비산아연 농도저감 시스템에서 아연의 비산 농도에 따라 조정이 이루어진 데이터 값의 누적된 값을 저장하는 데이터저장부를 도시한다.1 shows a zinc scattering concentration reduction system of a plating line according to an embodiment of the present invention.
FIG. 2 shows a state in which the scattered zinc is sucked using the zinc scattering concentration reduction system of FIG. 1.
FIG. 3 shows a data storage unit that stores accumulated values of data values adjusted according to the concentration of zinc in the zinc scattering concentration reduction system of FIG. 1.

이하에서는 본 발명의 실시 예들을 첨부 도면을 참조하여 상세히 설명한다. 이하에 소개되는 실시 예들은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 본 발명의 사상이 충분히 전달될 수 있도록 하기 위해 예로서 제공되는 것이다. 본 발명은 이하 설명되는 실시 예들에 한정되지 않고 다른 형태로 구체화될 수도 있다. 본 발명을 명확하게 설명하기 위하여 설명과 관계없는 부분은 도면에서 생략하였으며 도면들에 있어서, 구성요소의 폭, 길이, 두께 등은 편의를 위하여 과장되어 표현될 수 있다. 명세서 전체에 걸쳐서 동일한 참조번호들은 동일한 구성요소들을 나타낸다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments introduced below are provided as examples in order to sufficiently convey the spirit of the present invention to those skilled in the art to which the present invention pertains. The present invention is not limited to the embodiments described below and may be embodied in other forms. In order to clearly describe the present invention, parts irrelevant to the description are omitted in the drawings, and in the drawings, the width, length, and thickness of components may be exaggerated for convenience. Throughout the specification, the same reference numbers refer to the same components.

도 1은 본 발명의 실시 예에 따른 도금라인의 비산아연 농도저감 시스템을 도시하고, 도 2는 도 1의 비산아연 농도저감 시스템을 이용하여 비산된 아연을 흡입하는 모습을 나타낸다.FIG. 1 shows a zinc scattering concentration reduction system of a plating line according to an embodiment of the present invention, and FIG. 2 shows a state in which scattered zinc is sucked using the zinc scattering concentration reduction system of FIG. 1.

도 1 및 도 2를 참조하면, 본 발명의 실시 예에 따른 도금라인의 비산아연 농도저감 시스템은 강판(S)의 용융아연 도금라인의 도금조(10) 상부에 설치되며, 도금조(10)를 통과하여 빠져 나온 강판(S)의 양쪽 표면을 향해 고압의 에어가스를 각각 분사하여, 강판(S)의 표면에 부착된 용융아연이 깎이면서 비산되도록 하는 에어나이프(110)와, 강판(S)의 양쪽 영역에 각각 설치되며, 비산되는 아연의 농도를 측정하는 농도측정센서(120)와, 농도측정센서(120)에 의해 측정된 아연의 비산 농도가 설정값을 초과한 경우, 비산된 아연을 흡입하는 흡입유닛을 포함한다.1 and 2, the zinc scattering concentration reduction system of the plating line according to an embodiment of the present invention is installed on the plating tank 10 of the molten zinc plating line of the steel sheet S, and the plating tank 10 The air knife 110 and the steel sheet (S) to spray the high-pressure air gas toward both surfaces of the steel sheet (S), which has passed through, respectively, so that the molten zinc attached to the surface of the steel sheet (S) is shattered and scattered. ) Are respectively installed in both regions of the concentration measurement sensor 120 for measuring the concentration of zinc scattered, and when the scattering concentration of zinc measured by the concentration measurement sensor 120 exceeds a set value, the scattered zinc It includes a suction unit for sucking.

여기서, 흡입유닛은 강판(S)의 양쪽 영역에 각각 설치되어 비산된 아연을 흡입하며, 흡입한 비산 아연을 배출배관(134)을 통해 배출시키는 흡입팬(132)과, 농도측정센서(120)에 의해 측정된 아연의 비산 농도가 설정값을 초과한 경우 흡입팬(132)을 동작시키는 농도제어부(135)를 포함한다.Here, the suction unit is installed in both regions of the steel sheet (S), respectively, to suck the scattered zinc, and the suction fan 132 to discharge the sucked scattered zinc through the discharge pipe 134, and the concentration measurement sensor 120 And a concentration control unit 135 operating the suction fan 132 when the concentration of scattering of zinc measured by exceeds a set value.

또, 도 3을 참조하면, 본 발명의 실시 예에 따른 도금라인의 비산아연 농도저감 시스템은 농도측정센서(120)에 의해 측정된 아연의 비산 농도와, 에어나이프(110)와 강판(S) 표면 간의 간격, 에어나이프(110)의 설치 높이, 에어나이프(110)의 에어가스 분사 압력 중 하나 이상을 포함하는 에어나이프(110)의 작업 조건과, 도금된 강판(S)의 생산 속도, 강판(S)의 두께, 강판(S)의 폭 및 도금량 중 하나 이상에 대한 데이터 값을 저장하는 데이터저장부(140)를 포함한다.In addition, referring to Figure 3, the zinc scattering concentration reduction system of the plating line according to an embodiment of the present invention, the scattering concentration of zinc measured by the concentration measurement sensor 120, the air knife 110 and the steel sheet (S) The working conditions of the air knife 110 including at least one of the spacing between the surfaces, the installation height of the air knife 110, the air gas injection pressure of the air knife 110, the production speed of the plated steel sheet S, the steel sheet It includes a data storage unit 140 for storing data values for one or more of the thickness of (S), the width of the steel sheet (S) and the amount of plating.

이하, 각 구성요소에 대해서 구체적으로 설명한다.Hereinafter, each component will be described in detail.

강판의 용융아연 도금라인에서 강판은 용접기와 입측 루퍼를 거쳐 열처리로에서 열처리되고, 스나우트(미도시)를 거쳐 용융아연이 충진된 도금조(10)를 통과하면서 도금 처리된다.In the hot-dip galvanizing line of the steel sheet, the steel sheet is heat-treated in a heat treatment furnace via a welding machine and an entrance looper, and is plated while passing through a plating tank 10 filled with hot-dip zinc through a snout (not shown).

도금조(10) 안쪽에는 강판(S)을 지지 및 이송하기 위한 복수 개의 이송롤(R1,R2)이 구비되며, 이러한 요소들은 공지된 내용이므로 자세한 설명은 생략하도록 한다.Inside the plating bath 10, a plurality of transfer rolls R1 and R2 for supporting and transferring the steel sheet S are provided, and since these elements are well known, detailed descriptions thereof will be omitted.

도금조(10)를 통과하여 빠져 나온 강판(S)은 표면의 용융아연이 깎여지면서 도금두께가 조절된다.In the steel sheet S that has passed through the plating bath 10, the plating thickness is adjusted while the surface of the molten zinc is cut.

이때, 도 1에 도시한 바와 같이, 에어나이프(110)는 강판(S)의 용융아연 도금라인의 도금조(10) 상부에 설치되며, 도금조(10)를 통과하여 빠져 나온 강판(S)의 양쪽 표면을 향해 고압의 에어가스를 각각 분사한다.At this time, as shown in Figure 1, the air knife 110 is installed on the top of the plating tank 10 of the hot-dip galvanizing line of the steel sheet (S), the steel sheet (S) passed through the plating tank 10 High-pressure air gas is injected toward both surfaces of each.

에어나이프(110)는 강판(S)의 양쪽에 각각 설치되고, 강판(S)의 양쪽 표면을 향해 고압의 에어가스를 각각 분사한다. 이러한 에어나이프(110)는 미리 설정된 값에 따라 도금조(10)로부터의 설치 높이, 에어나이프(110)와 강판(S) 표면 간의 간격, 에어나이프(110)의 에어가스 분사 압력이 셋팅된다. 에어나이프(110)의 설치 높이, 에어나이프(110)와 강판(S) 표면 간의 간격, 에어나이프(110)의 에어가스 분사 압력 등의 에어나이프(110)의 작업 조건과 관련된 데이터 값은 데이터저장부(140)에 저장된다.The air knives 110 are respectively installed on both sides of the steel sheet S, and inject high-pressure air gas toward both surfaces of the steel sheet S, respectively. The air knife 110 is set according to a preset value, the installation height from the plating tank 10, the distance between the air knife 110 and the surface of the steel sheet S, and the air gas injection pressure of the air knife 110 are set. Data values related to the working conditions of the air knife 110, such as the installation height of the air knife 110, the distance between the surfaces of the air knife 110 and the steel plate S, and the air gas injection pressure of the air knife 110, are stored in data. It is stored in the unit 140.

에어나이프(110)에 의해 강판(S)의 양쪽 표면을 향해 고압의 에어가스를 각각 분사됨에 따라 강판(S)의 표면에 부착된 용융아연이 깎이면서 비산된다. 비산된 아연이 강판에 붙게 되면, 그 두께차이로 인해 합금화 공정에서 색상 차를 유발하게 되고, 스킨 패스 밀 공정에서 압착되면서 요철형태의 결함으로 나타날 수 있다.As high pressure air gas is injected toward both surfaces of the steel sheet S by the air knife 110, the molten zinc attached to the surface of the steel sheet S is scattered while being scattered. When the scattered zinc adheres to the steel sheet, the difference in thickness causes a color difference in the alloying process, and may appear as a defect in the uneven shape as it is compressed in the skin pass mill process.

따라서, 이를 막기 위해 농도측정센서(120)는 강판(S)의 양쪽 영역에 각각 설치되며, 비산되는 아연의 농도를 측정하며, 흡입유닛은 농도측정센서(120)에 의해 측정된 아연의 비산 농도가 설정값을 초과한 경우, 비산된 아연을 흡입하게 된다.Therefore, to prevent this, the concentration measurement sensors 120 are respectively installed in both regions of the steel plate S, and measure the concentration of zinc scattered, and the suction unit measures the concentration of zinc scattered by the concentration measurement sensor 120. When exceeds the set value, scattered zinc is sucked.

농도측정센서(120)는 강판(S)의 표면으로부터 떨어져 나와 비산되는 아연의 농도를 효과적으로 측정할 수 있도록 배치되며, 예컨대 에어나이프(110) 상부나 그 주변부에 근접하게 배치될 수 있다.The concentration measurement sensor 120 is disposed so as to effectively measure the concentration of zinc scattered off the surface of the steel sheet S, for example, may be disposed close to the upper portion of the air knife 110 or its periphery.

농도측정센서(120)에 의해 측정된 아연의 비산 농도가 설정값을 초과한 경우 흡입유닛의 농도제어부(135)가 배출배관(134)에 부착된 흡입팬(132)을 가동시키게 된다.When the concentration of scattering of zinc measured by the concentration measurement sensor 120 exceeds a set value, the concentration control unit 135 of the suction unit operates the suction fan 132 attached to the discharge pipe 134.

농도제어부(135)는 농도측정센서(120)에 의해 측정된 아연의 비산 농도가 설정값을 초과한 경우 흡입팬(132)을 자동으로 제어하며, 다른 예에서 관리자가 원격지 시스템을 통해 흡입팬(132)을 동작시킬 경우에는 생략 가능하다.The concentration control unit 135 automatically controls the suction fan 132 when the scattering concentration of zinc measured by the concentration measurement sensor 120 exceeds a set value, and in another example, the administrator uses a suction fan ( 132) can be omitted.

흡입팬(132)은 배출배관(134)의 출구 쪽에 배치될 수 있으며, 흡입력에 의해 배출배관(134)의 입구를 통해 비산된 아연을 빨아들일 수 있다.The suction fan 132 may be disposed at the outlet side of the discharge pipe 134 and suck the scattered zinc through the inlet of the discharge pipe 134 by suction force.

이러한 배출배관(134) 및 이에 부착된 흡입팬(132)은 예컨대 강판(S)을 기준으로 강판(S)의 양쪽에 배치된 각 에어나이프(110)의 상부 쪽에 각각 배치될 수 있다.The discharge pipe 134 and the suction fan 132 attached thereto may be respectively disposed on the upper side of each air knife 110 disposed on both sides of the steel plate S based on the steel plate S, for example.

농도측정센서(120)에 의해 측정된 아연의 비산 농도가 설정값 이하로 떨어질 경우, 농도제어부(135)는 흡입팬(132)의 동작을 중단시킬 수 있다.When the scattering concentration of zinc measured by the concentration measurement sensor 120 falls below a set value, the concentration control unit 135 may stop the operation of the suction fan 132.

도 3은 도 1의 비산아연 농도저감 시스템에서 아연의 비산 농도에 따라 조정이 이루어진 데이터 값의 누적된 값을 저장하는 데이터저장부를 도시한다.FIG. 3 shows a data storage unit that stores accumulated values of data values adjusted according to the concentration of zinc in the zinc scattering concentration reduction system of FIG. 1.

한편, 상술한 데이터저장부(140)는 농도측정센서(120)에 의해 측정된 아연의 비산 농도와, 에어나이프(110)와 강판(S) 표면 간의 간격, 에어나이프(110)의 설치 높이, 에어나이프(110)의 에어가스 분사 압력 중 하나 이상을 포함하는 에어나이프(110)의 작업 조건과, 도금된 강판(S)의 생산 속도, 강판(S)의 두께, 강판(S)의 폭 및 도금량 중 하나 이상에 대한 데이터 값을 저장한다.On the other hand, the above-described data storage unit 140 is a concentration of zinc measured by the concentration measurement sensor 120, the distance between the surface of the air knife 110 and the steel sheet S, the installation height of the air knife 110, Working conditions of the air knife 110 including one or more of the air gas injection pressure of the air knife 110, the production speed of the plated steel sheet S, the thickness of the steel sheet S, the width of the steel sheet S, and Data values for one or more of the plating amounts are stored.

에어나이프(110)와 강판(S) 표면 간의 간격, 에어나이프(110)의 설치 높이, 에어나이프(110)의 에어가스 분사 압력 중 하나 이상을 포함하는 에어나이프(110)의 작업 조건과, 도금된 강판(S)의 생산 속도, 강판(S)의 두께, 강판(S)의 폭 및 도금량 중 하나 이상은 도시하지는 않았으나, 각종 센서들에 의해 자동으로 측정될 수 있으며, 측정된 값은 데이터저장부(140)로 전송되어 저장될 수 있다.The working conditions of the air knife 110 including one or more of the gap between the air knife 110 and the surface of the steel sheet S, the installation height of the air knife 110, and the air gas injection pressure of the air knife 110, and plating One or more of the production speed of the steel sheet S, the thickness of the steel sheet S, the width of the steel sheet S, and the plating amount are not shown, but can be automatically measured by various sensors, and the measured value is stored in data It may be transmitted to the unit 140 and stored.

농도측정센서(120)에 의해 측정된 아연의 비산 농도가 설정값을 초과하여, 흡입팬(132)을 통해 비산된 아연을 배출시켜 비산 농도에 대한 조절이 이루어진 경우, 이전의 셋팅된 작업 조건에 대한 재조정이 이루어질 수 있다.When the scattering concentration of zinc measured by the concentration measurement sensor 120 exceeds a set value, and the scattering zinc is discharged through the suction fan 132 to adjust the scattering concentration, the previously set working conditions A readjustment of Korea may be made.

즉, 에어나이프(110)와 강판(S) 표면 간의 간격, 에어나이프(110)의 설치 높이, 에어나이프(110)의 에어가스 분사 압력 중 하나 이상을 포함하는 에어나이프(110)의 작업 조건과, 도금된 강판(S)의 생산 속도, 강판(S)의 두께, 강판(S)의 폭 및 도금량 중 하나 이상에 대한 셋팅을 다시 수행하고, 이에 대한 데이터 값은 데이터저장부(140)에 누적되어 저장될 수 있다.That is, the working conditions of the air knife 110 including at least one of the gap between the air knife 110 and the surface of the steel sheet S, the installation height of the air knife 110, and the air gas injection pressure of the air knife 110, , The production speed of the plated steel sheet (S), the thickness of the steel sheet (S), the width of the steel sheet (S) and the plating amount is set again for one or more, the data value for this is accumulated in the data storage 140 Can be saved.

위와 같이 작업 조건에 대한 재조정이 완료된 상태에서, 에어나이프(110)에 의해 강판(S)의 양쪽 표면을 향해 고압의 에어가스를 각각 분사시키고, 농도측정센서(120)에 의해 비산되는 아연의 농도를 다시 측정하게 된다. In the state that the reconditioning for the working conditions is completed as described above, the high pressure air gas is injected to both surfaces of the steel plate S by the air knife 110, respectively, and the concentration of zinc scattered by the concentration measurement sensor 120 Will measure again.

이와 같이, 작업 조건에 대한 재조정이 이루어진 데이터 값을 누적하여 데이터저장부(140)에 저장하여, 최적의 작업 조건을 맞추어 가면서 강판(S)의 표면에 대한 도금두께 처리 작업을 효과적으로 수행할 수 있다.As described above, the data values that have been re-adjusted for the working conditions are accumulated and stored in the data storage unit 140, so that the plating thickness treatment on the surface of the steel sheet S can be effectively performed while the optimal working conditions are met. .

이상에서는 특정의 실시 예에 대하여 도시하고 설명하였다. 그러나, 본 발명은 상기한 실시 예에만 한정되지 않으며, 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 이하의 청구범위에 기재된 발명의 기술적 사상의 요지를 벗어남이 없이 얼마든지 다양하게 변경 실시할 수 있을 것이다.In the above, specific embodiments have been illustrated and described. However, the present invention is not limited only to the above-described embodiments, and those of ordinary skill in the art to which the invention pertains can perform various changes without departing from the gist of the technical spirit of the invention as set forth in the claims below. Will be able to.

110: 에어나이프 120: 농도측정센서
132: 흡입팬 134: 배출배관
135: 농도제어부 140: 데이터저장부
S: 강판110: air knife 120: concentration measurement sensor
132: suction fan 134: discharge pipe
135: concentration control unit 140: data storage unit
S: Steel plate

Claims (4)

강판의 용융아연 도금라인의 도금조 상부에 설치되며, 상기 도금조를 통과하여 빠져 나온 상기 강판의 양쪽 표면을 향해 고압의 에어가스를 각각 분사하여, 상기 강판의 표면에 부착된 용융아연이 깎이면서 비산되도록 하는 에어나이프;
상기 강판의 양쪽 영역에 각각 설치되며, 상기 비산되는 아연의 농도를 측정하는 농도측정센서; 및
상기 측정된 아연의 비산 농도가 설정값을 초과한 경우, 상기 비산된 아연을 흡입하는 흡입유닛;을 포함하는 도금라인의 비산아연 농도저감 시스템.It is installed on the top of the plating bath of the hot-dip galvanizing line of the steel sheet, and by spraying high-pressure air gas toward both surfaces of the steel sheet that has passed through the plating bath, the molten zinc attached to the surface of the steel sheet is cut. An air knife that causes scattering;
A concentration measurement sensor installed in both regions of the steel sheet to measure the concentration of the scattered zinc; And
If the measured concentration of the scattering of zinc exceeds a set value, a suction unit for sucking the scattered zinc; Zinc scattering concentration reduction system of a plating line comprising a. 제1항에 있어서,
상기 흡입유닛은
상기 강판의 양쪽 영역에 각각 설치되어 상기 비산된 아연을 흡입하며, 상기 흡입한 비산 아연을 배출라인을 통해 배출시키는 흡입팬을 포함하는 도금라인의 비산아연 농도저감 시스템.According to claim 1,
The suction unit
A zinc scattering concentration reduction system of a plating line including suction fans which are installed in both regions of the steel sheet to suck the scattered zinc and discharge the sucked zinc through the discharge line. 제2항에 있어서,
상기 흡입유닛은
상기 측정된 아연의 비산 농도가 설정값을 초과한 경우 상기 흡입팬을 동작시키는 농도제어부를 더 포함하는 도금라인의 비산아연 농도저감 시스템.According to claim 2,
The suction unit
A zinc scattering concentration reduction system of the plating line further comprising a concentration control unit for operating the suction fan when the measured concentration of scattering of zinc exceeds a set value. 제1항에 있어서,
상기 측정된 아연의 비산 농도와, 상기 에어나이프와 상기 강판 표면 간의 간격, 설치 높이, 에어가스 분사 압력 중 하나 이상을 포함하는 상기 에어나이프의 작업 조건과, 도금된 강판의 생산 속도, 강판의 두께, 폭 및 도금량 중 하나 이상에 대한 데이터 값을 저장하는 데이터저장부를 더 포함하되,
상기 데이터저장부는 상기 측정된 아연의 비산 농도에 따라 조정이 이루어진 상기 데이터 값의 누적된 값을 저장하는 도금라인의 비산아연 농도저감 시스템.According to claim 1,
Working conditions of the air knife including at least one of the measured zinc scattering concentration, the gap between the air knife and the surface of the steel plate, the installation height, and the air gas injection pressure, the production speed of the plated steel sheet, and the thickness of the steel sheet , Further comprising a data storage unit for storing data values for one or more of width and plating amount,
The data storage unit is a zinc scattering concentration reduction system of the plating line that stores the accumulated value of the data value is adjusted according to the measured scattering concentration of zinc.
KR1020180163589A 2018-12-17 2018-12-17 System for diminishing concentration of zinc particles splashed in galvanizing line KR102181787B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114918217A (en) * 2022-05-25 2022-08-19 烟台市福源金属表面工程有限公司 Hot-galvanize air curtain side-draft zinc smoke environment-friendly device
WO2023227083A1 (en) * 2023-02-10 2023-11-30 徐州瑞马智能技术有限公司 Lifting-type top-suction environmentally-friendly fume exhaust beam for zinc pot cover

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020020115A (en) 2000-09-08 2002-03-14 이구택 Aluminum uniformity concentration control method of Hot zinc dipping pot
KR20120119025A (en) * 2011-04-20 2012-10-30 주식회사 포스코 Apparatus for treating splashed zinc particles of zinc galvanizing line
KR20140019695A (en) * 2012-08-07 2014-02-17 주식회사 포스코 Pot scraper equipped with apparatus for preventing contamination

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020020115A (en) 2000-09-08 2002-03-14 이구택 Aluminum uniformity concentration control method of Hot zinc dipping pot
KR20120119025A (en) * 2011-04-20 2012-10-30 주식회사 포스코 Apparatus for treating splashed zinc particles of zinc galvanizing line
KR20140019695A (en) * 2012-08-07 2014-02-17 주식회사 포스코 Pot scraper equipped with apparatus for preventing contamination

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114918217A (en) * 2022-05-25 2022-08-19 烟台市福源金属表面工程有限公司 Hot-galvanize air curtain side-draft zinc smoke environment-friendly device
WO2023227083A1 (en) * 2023-02-10 2023-11-30 徐州瑞马智能技术有限公司 Lifting-type top-suction environmentally-friendly fume exhaust beam for zinc pot cover

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