KR20040031308A - Dross removal apparatus of snout inside for zinc galva-nizing pot - Google Patents
Dross removal apparatus of snout inside for zinc galva-nizing pot Download PDFInfo
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- KR20040031308A KR20040031308A KR1020020060698A KR20020060698A KR20040031308A KR 20040031308 A KR20040031308 A KR 20040031308A KR 1020020060698 A KR1020020060698 A KR 1020020060698A KR 20020060698 A KR20020060698 A KR 20020060698A KR 20040031308 A KR20040031308 A KR 20040031308A
- Authority
- KR
- South Korea
- Prior art keywords
- snout
- snorkel
- bath
- zinc
- measuring sensor
- Prior art date
Links
- 210000004894 snout Anatomy 0.000 title claims abstract description 70
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 22
- 239000011701 zinc Substances 0.000 title claims abstract description 22
- 238000005246 galvanizing Methods 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000003028 elevating effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 21
- 238000007747 plating Methods 0.000 description 12
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical group [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 230000007547 defect Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 229910001873 dinitrogen Inorganic materials 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 239000011787 zinc oxide Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000002498 deadly effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
Classifications
-
- 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
- C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping process
-
- 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
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
- C23C2/0222—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating in a reactive atmosphere, e.g. oxidising or reducing atmosphere
-
- 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
- C23C2/34—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
Abstract
Description
본 발명은 연속 아연 도금조용 스너우트 내부의 이물질 제거장치에 관한 것으로서, 더욱 상세하게는 강판을 안내하도록 도금조의 상측에 설치된 스너우트 내부에 발생되는 이물질(에쉬, 드로스 등)을 신속하고 효과적으로 제거하여 도금강판의 품질을 향상시킬 수 있는 연속 아연 도금조용 스너우트 내부의 이물질 제거장치에 관한 것이다.The present invention relates to an apparatus for removing foreign substances in a snout for a continuous galvanizing bath, and more particularly, to quickly and effectively remove foreign matter (ash, dross, etc.) generated inside a snout installed on an upper side of a plating bath to guide a steel plate. The present invention relates to an apparatus for removing foreign substances inside a snout for a continuous galvanizing bath capable of improving the quality of a plated steel sheet.
일반적으로 생활수준의 향상으로 고급화된 제품을 추구하게 됨에 따라서, 각종 제품에 다양하게 사용되는 아연도금제품의 품질향상이 요구되고 있다.In general, as a result of pursuing a high-quality product by improving the standard of living, it is required to improve the quality of the galvanized products used in various products.
강판의 표면에 아연도금을 할 때에는 도 1에 나타낸 바와 같이 스너우트(2)의 안내를 받으면서 도금조(1)의 내부로 유입된 강판(S)은 싱크롤(3) 및 스테비라이져롤(4)에 의해서 방향이 전환 된 상태로 배출되는 것이며, 상기 도금조(1)의 상측으로 배출되는 강판(S)의 표면에 도금된 아연은 에어 나이프(5)에 의해서 균일하게 도포되는 것이다.When galvanizing the surface of the steel sheet, as shown in FIG. 1, the steel sheet S introduced into the plating bath 1 while being guided by the snout 2 is a sink roll 3 and a stabilizer roll ( 4) is discharged in a state in which the direction is switched, the zinc plated on the surface of the steel sheet (S) discharged to the upper side of the plating tank (1) is uniformly applied by the air knife (5).
상기 과정을 통하여 생산되는 아연도금제품의 가장 고질적인 결함은 용융아연에서 증발되는 아연증기가 모여 발생되는 아연재인 에쉬(Ash)라 할 수 있으며, 특히 도금조로 유입되는 강판을 안내하는 스너우트 내부에 발생되는 에쉬는 아연도금 제조공정에서 치명적인 결합으로 인정되어 이를 제거하기 위한 다양한 기술이 개발되어 있다.The most severe defect of the galvanized product produced through the above process may be referred to as ash, which is a zinc material generated by collecting zinc vapor evaporated from molten zinc, especially inside a snout to guide the steel sheet flowing into the plating bath. Ash generated in the process is recognized as a deadly bond in the galvanizing process has been developed a variety of techniques to remove it.
아연도금 제조기술의 역사는 짧지 않다고 하겠으나 스너우트내의 에쉬 제거기술도 아연도금의 제조기술 못지 않게 많은 과정과 연구 적용한 내용으로 대표적 몇 가지는 다음과 같다.The history of galvanizing manufacturing technology is not short, but the ash removal technology in snout is as much as the process and research applied as the galvanizing manufacturing technology.
먼저, 도 2는 스너우트의 내부에 발생되는 에쉬를 흡입 제거하는 방법으로 스너우트(2a)의 하단부는 도금조(1a)에 담겨진 아연의 탕면보다 낮게 위치시키고 탕면의 상부에서 설치된 흡입관(3a)을 통하여 에쉬를 흡입한 후 필터(4a)를 통과시키면서 여과하여 배출관(5a)을 통하여 스너우트(2a)의 내부로 공급하도록 되어 있다.First, FIG. 2 is a suction pipe 3a positioned at a lower end of the snut 2a lower than the hot water surface of zinc contained in the plating bath 1a by suction and removing the ash generated inside the snout. After suctioning the ash through the filter 4a, the filter is filtered while passing through the filter 4a to be supplied into the snout 2a through the discharge pipe 5a.
이때에는 스너우트(2a) 내부의 에쉬 특성상 저온생성 에쉬는 스너우트(2a) 내부 벽 주변에서 맴돌며, 스너우트(2a)의 구조와 흡입관(3a)의 구조에 따라 목적의 아연 탕면의 증발 에쉬와 함께 스너우트(2a) 내부의 전체 가스를 흡입하게 되어 아연탕면에 발생된 미소량의 증발 에쉬를 흡입하는 효과보다 열처리로 또는 가스의 순환이 통상화 되어 기대의 효과가 저조하였다.At this time, the low temperature generated ash revolves around the inner wall of the snout 2a due to the ash characteristic of the snout 2a, and according to the structure of the snout 2a and the structure of the suction pipe 3a, At the same time, the entire gas inside the snout 2a is sucked, and the heat treatment furnace or the circulation of the gas is more conventional than the effect of sucking the minute amount of evaporated ash generated on the zinc bath surface.
또한, 스너우트(2a)에 의해서 밀폐된 공간 속에서 용해중에 발생한 이물질인 드로스가 외부로 배출되지 못하고 스너우트(2a) 내부의 아연탕면에 부상되므로 통과하는 강판(S)의 표면에 부착되어 표면 결함을 유발시키게 되는 문제점이 있었다.In addition, the dross, which is a foreign substance generated during melting in the sealed space by the snout 2a, is not discharged to the outside and floats on the zinc bath surface inside the snout 2a so that it is attached to the surface of the steel sheet S passing therethrough. There was a problem that caused the defect.
도 3은 스너우트(2b)에 의해서 밀폐된 탕면에 부상된 에쉬 및 드로스를 메탈펌프(4b)의 작동으로 용융아연과 함께 흡입관(3b)으로 흡입하여 배출관(5b)을 통하여 스너우트(2b) 외부로 배출시키는 순환방식을 사용하고 있다.3 shows the ash and dross floating on the hot water surface sealed by the snout 2b by suctioning the suction pipe 3b together with the molten zinc into the suction pipe 3b by the operation of the metal pump 4b, and the snout 2b through the discharge pipe 5b. ) It uses a circulation method to discharge to the outside.
그러나 이때에는 스너우트(2b)의 내부에서 용융 아연이 유동되므로 연속적으로 통과하는 강판(S)의 표면에 에쉬 또는 드로스 등이 부착되어 결함을 유발시키게 되는 문제점이 있었다.However, in this case, since molten zinc flows inside the snout 2b, ash or dross is attached to the surface of the steel sheet S that passes continuously, causing a defect.
도 4는 질소를 이슬점 이하로 냉각시킨 습식 질소(Wet N2)분사 방법으로 스너우트(2c)에 설치된 분사노즐(3c)을 통하여 상기 스너우트(2c)의 내부에 이슬점 이하의 질소 가스(분위기 가스)를 분사하여 스너우트(2c) 내부의 아연 탕면에 미세한 산화 피막(4c)을 형성시켜 아연층 증발을 억제하는 것이다.4 shows nitrogen gas below the dew point (atmosphere gas) inside the snout 2c through the injection nozzle 3c installed in the snout 2c by the wet nitrogen (Wet N2) spraying method in which nitrogen is cooled below the dew point. (I) is sprayed to form a fine oxide film 4c on the zinc bath surface inside the snout 2c to suppress evaporation of the zinc layer.
그러나 이때에는 2차 아연 산화물이 생성되어 2차 결함을 유발시키게 되는 문제점이 있었다.However, at this time, there was a problem that secondary zinc oxide is generated to cause secondary defects.
본 발명은 상기한 문제점 해결하기 위하여 발명한 것으로서, 그 목적은 스너우트 내부의 탕면에 에쉬가 발생되는 것을 억제함은 물론 발생된 에쉬 또는 부상된 드로스 등을 신속하게 스너우트 외부로 배출시키도록 스너우트를 통과하는 강판 표면에 가열된 질소를 분사시켜 유동되는 기타의 결함물질이 강판 표면에 부착되지 않도록 한 연속 아연 도금조용 스너우트 내부의 이물질 제거장치를 제공함에 있다.The present invention has been invented to solve the above problems, its purpose is to suppress the occurrence of ash on the surface of the snout, as well as to quickly discharge the generated ash or injured dross to the outside of the snout The present invention provides an apparatus for removing foreign substances in a snout for a continuous galvanizing bath in which heated nitrogen is injected to a surface of a steel sheet passing through the snout to prevent other defects from flowing into the steel sheet surface.
도 1은 일반적인 아연 도금조를 나타낸 단면도.1 is a cross-sectional view showing a general galvanized bath.
도 2 내지 도 4는 종래의 에쉬 제거 장치를 나타낸 단면도.2 to 4 are cross-sectional views showing a conventional ash removal device.
도 5는 본 발명에 따른 이물질 제거장치를 나타낸 분해 사시도.5 is an exploded perspective view showing a foreign matter removing apparatus according to the present invention.
도 6은 본 발명에 따른 이물질 제거장치가 설치된 상태를 나타낸 단면도.6 is a cross-sectional view showing a state in which the foreign matter removing apparatus according to the present invention is installed.
도 7은 본 발명에 따른 이물질 제거장치의 작동상태를 설명하기 위한 흐름도.Figure 7 is a flow chart for explaining the operating state of the foreign matter removal apparatus according to the present invention.
※도면의 주요부분에 대한 부호의 설명※※ Explanation of symbols about main part of drawing ※
S : 강판1 : 아연 도금조S: Steel plate 1: Galvanized bath
10 : 스너우트11 : 스노클10: snout 11: snorkel
12 : 자바라관13 : 높이 측정센서12: bellows tube 13: height measuring sensor
20 : 승강수단21 : 구동모터20: lifting means 21: drive motor
22 : 회전축23 : 워엄기어22: rotating shaft 23: worm gear
24 : 승강축25 : 워엄24: lifting shaft 25: worm
30 : 분사노즐31 : 공급관30: injection nozzle 31: supply pipe
40 : 압력측정수단40: pressure measuring means
상기 목적을 달성하기 위한 본 발명의 특징적인 구성을 설명하면 다음과 같다.Referring to the characteristic configuration of the present invention for achieving the above object is as follows.
본 발명의 연속 아연 도금조용 스너우트 내부의 이물질 제거장치는 아연 도금조의 내부로 유입되는 강판을 안내하도록 상기 아연 도금조의 상부 일측에 설치된 스너우트와, 상기 스너우트의 하단부에 자바라관을 매개로 설치되고, 하부 전면및 양측면은 아연 탕면의 내부로 투입되고 배면은 탕면의 상부에 소정거리 이격된 상태로 유지되는 스노클과, 상기 스너우트와 탕면 사이의 거리를 측정하도록 스너우트의 하부에 설치된 높이 측정센서와, 상기 높이 측정센서의 측정값에 따라서 스노클을 상승/하강시키도록 스너우트와 스노클의 외측면에 설치된 승강수단과, 상기 스너우트의 일 측면에 설치되어 스너우트내부 압력을 특정하는 압력측정수단을 포함하여서 된 것이다.The foreign material removing apparatus inside the snout of the continuous galvanizing bath of the present invention is a snout installed at an upper side of the galvanizing bath to guide the steel sheet flowing into the galvanizing bath, and a bellows tube is installed at the lower end of the snout. The lower front and both sides are introduced into the inside of the zinc tang surface, and the snorkel is maintained at a predetermined distance apart from the top of the tang surface, and the height measurement installed at the bottom of the snout to measure the distance between the snout and the tang surface Pressure measurement means for mounting the snout and the outer surface of the snorkel to raise and lower the snorkel according to the sensor, the measured value of the height measuring sensor, and the one side of the snout to specify the internal pressure of the snout Including means.
이와 같은 특징을 갖는 본 발명을 상세하게 설명하면 다음과 같다.Referring to the present invention having such characteristics in detail as follows.
도 5는 본 발명에 따른 이물질 제거장치를 나타낸 분해 사시도이고, 도 6은 본 발명에 따른 이물질 제거장치가 설치된 상태를 나타낸 단면도이다.5 is an exploded perspective view showing a foreign matter removing apparatus according to the present invention, Figure 6 is a cross-sectional view showing a state in which the foreign matter removing apparatus according to the present invention is installed.
여기에서 참조되는 바와 같이 본 발명은 아연 도금조(1)의 내부로 유입되는 강판(S)을 안내하도록 상기 아연 도금조(1)의 상부 일 측에 스너우트(10)가 설치되어 있되, 상기 스너우트(10)의 하단부에는 스노클(11)이 자바라관(12)을 매개로 설치되어 있고, 상기 스노클(11)의 하부 전면 및 양 측면은 아연 탕면의 내부로 투입되고 배면은 탕면의 상부에 소정거리 이격된 상태로 유지되도록 설치되어 있다.As referred to herein, the present invention is provided with a snout 10 on one side of the upper side of the galvanizing bath 1 to guide the steel sheet S flowing into the galvanizing bath 1, but The lower end of the snout 10 is provided with a snorkel 11 via a bellows tube 12, the lower front and both sides of the snorkel 11 are introduced into the zinc bath surface and the rear surface is at the top of the bath surface. It is installed to be kept spaced apart a predetermined distance.
한편, 상기 스노클(11)의 하부 타 측면의 이격된 거리를 조절할 수 있도록 스너우트(10)와 탕면 사이의 거리를 측정하는 높이 측정센서(13)가 스너우트(10)의 하부에 설치되어 있고, 상기 스너우트(10)와 스노클(11)의 사이에는 높이 측정센서(13)의 측정값에 따라서 스노클(11)을 상승 또는 하강시키는 승강수단(20)이 설치되어 있다.On the other hand, the height measuring sensor 13 for measuring the distance between the snout 10 and the bath surface to adjust the spaced distance of the other side of the lower snorkel 11 is installed in the lower portion of the snout 10 The lifting means 20 is provided between the snout 10 and the snorkel 11 to raise or lower the snorkel 11 according to the measured value of the height measuring sensor 13.
상기 승강수단(20)은 스너우트(10)의 외측면에 구동모터(21)가 설치되어 있고, 상기 구동모터(21)에는 양 단부에 워엄기어(23)가 부착된 회전축(22)이 회전 가능하게 연결되어 있으며, 상기 워엄기어(23)에는 워엄(25)이 기어 결합되어 있되, 상기 워엄(25)은 승강축(24)의 일면에 형성되어 있고, 상기 승강축(24)의 하단부는 스노클(11)에 연결되어 있다.The elevating means 20 is a drive motor 21 is provided on the outer surface of the snout 10, the drive motor 21 is rotated the rotary shaft 22 is attached to the worm gear 23 at both ends The worm 25 is gear-coupled to the worm gear 23, and the worm 25 is formed on one surface of the lifting shaft 24, and a lower end of the lifting shaft 24 is connected to the worm gear 23. It is connected to the snorkel 11.
한편, 상기 스노클(11)의 내측 둘레면에는 복수개의 분사노즐(30)이 설치되어 있되, 상기 분사노즐(30)의 선단부는 탕면을 향하도록 설치되어 있고, 상기 분사노즐(30)에 연결되어 분위기 가스를 공급하는 공급관(31)은 분위기 가스가 예열 될 수 있도록 스노클(11)의 내부에 내장되어 있다.On the other hand, a plurality of injection nozzles 30 are provided on the inner circumferential surface of the snorkel 11, the distal end of the injection nozzle 30 is installed to face the water surface, and is connected to the injection nozzle 30 The supply pipe 31 for supplying the atmospheric gas is embedded in the snorkel 11 so that the atmospheric gas can be preheated.
그리고, 상기 스너우트(10)의 일 측면에는 스너우트(10) 내부의 압력을 특정하기 위한 압력측정수단(40)이 설치되어 있다.One side of the snout 10 is provided with a pressure measuring means 40 for specifying the pressure inside the snout 10.
이와 같이 구성된 본 발명의 작동상태를 상세히 설명하면 다음과 같다.Referring to the operating state of the present invention configured as described in detail as follows.
먼저, 스너우트(10)의 하부에 설치된 스노클(11)의 전면 및 양 측면은 탕면의 하부로 투입시키고 배면은 탕면으로부터 소정거리(약 10 ~ 30mm) 이격되게 위치시킨다.First, the front and both sides of the snorkel 11 installed in the lower portion of the snout 10 is introduced into the lower portion of the bath surface, and the rear surface is positioned to be spaced a predetermined distance (about 10 to 30 mm) from the bath surface.
이러한 상태에서 강판(S)을 도금조(1)의 내부로 공급하면 상기 도금조(1)는 싱크롤(3) 및 스테비라이져롤(4)에 안내를 받으면서 도금작업을 수행하게 되고, 상기 강판(S)의 표면에 도금량을 균일하게 유지하는 에어나이프(5)에 의해서 하부로 밀려나온 산화 아연이 스노클(11)의 내부로 유입되는 것을 방지하게 되는 것이다.When the steel sheet S is supplied into the plating bath 1 in this state, the plating bath 1 performs plating while being guided by the sink roll 3 and the stabilizer roll 4. The zinc oxide pushed out by the air knife 5 keeping the plating amount uniformly on the surface of the steel sheet S is prevented from flowing into the snorkel 11.
한편, 공급관(31)을 통하여 공급된 질소 가스는 스노클(11)의 내측 둘레면에 설치된 복수개의 분사노즐(30)을 통하여 분사되면서 산화아연 및 에쉬가 강판(S)의표면에 부착되는 것을 방지하게 되는 것이며, 상기 공급관(31)은 스노클(11)의 내부에 내장되어 있으므로, 분사노즐(30)을 통하여 분사되는 질소가스는 예열된 상태로 분사되므로 스노클(11)내부의 분위기를 균일하게 유지하게 된다.On the other hand, the nitrogen gas supplied through the supply pipe 31 is injected through a plurality of injection nozzles 30 installed on the inner circumferential surface of the snorkel 11 to prevent zinc oxide and ash from adhering to the surface of the steel sheet S. Since the supply pipe 31 is embedded in the snorkel 11, the nitrogen gas injected through the injection nozzle 30 is injected in a preheated state, thereby maintaining the atmosphere inside the snorkel 11 uniformly. Done.
그리고 스노클(11) 내부에 발생된 에쉬 및 드로스는 분사노즐(30)에서 분사되는 질소 가스의 분사압력으로 인하여 스노클(11)의 배면과 탕면 사이에 형성된 간격을 통하여 스노클(11)의 외부로 배출되어 스노클(11) 내부가 청결하게 유지된다.The ash and dross generated inside the snorkel 11 are discharged to the outside of the snorkel 11 through a gap formed between the back surface and the hot water surface of the snorkel 11 due to the injection pressure of nitrogen gas injected from the injection nozzle 30. Thus, the inside of the snorkel 11 is kept clean.
한편, 상기 스노클(11)의 개방된 부분(배면)을 통하여 유입되는 외부 공기는 열처리로의 특성에 따라 로내의 압력을 조업조건상 항상 (+)상태의 질소 또는 분위기 가스(HN)로 충만되어 스노클(11)의 내부로 침투 할 수 없게 된다.On the other hand, the outside air introduced through the open portion (back) of the snorkel 11 is snorkel filled with nitrogen or atmospheric gas (HN) of the positive (+) state always in the operating conditions according to the characteristics of the heat treatment furnace It cannot penetrate the inside of (11).
스노클(11)내에 별도의 질소 공급이 없는 상태의 열처리로의 공급 질소만을 이용 스노클(11)의 개방부분과 열처리로 내부의 압력 변화를 실험한 결과를 나타낸 표 1에 나타낸 바와 같이 조업에 지장을 주지 않는 것을 확인할 수 있다.As shown in Table 1 showing the results of experiments on the pressure change in the open portion of the snorkel 11 and the heat treatment furnace using only the supply nitrogen to the heat treatment furnace in the absence of a separate nitrogen supply in the snorkel 11, the operation was not affected. You can confirm that you do not give.
한편, 도금되어질 강판(S)의 표면 산화를 방지하기 위해 스너우트 스노클 내부 압력이 항상 (+)상태로 유지되도록 스너우트 측면에 설치된 압력측정수단(40)을 통해 압력을 측정하게되고 측정된 값을 이용하여 공급관(31)에 설치된 밸브(32)를 조절하여 스노클(11)에 공급되는 질소의 유량 제어가 가능하게 된다.Meanwhile, in order to prevent surface oxidation of the steel sheet to be plated, the pressure is measured through the pressure measuring means 40 installed on the side of the snout so that the internal pressure of the snout snorkel is always maintained in a positive state. It is possible to control the flow rate of nitrogen supplied to the snorkel 11 by adjusting the valve 32 installed in the supply pipe 31 by using.
상술한 바와 같이 도금작업을 연속적으로 수행하여 상기 도금조(1)에 담겨진 아연이 소모되면 탕면 높이가 변화하게 되고, 이때 변화되는 탕면의 높이는 높이 측정센서(13)에 의해서 실시간으로 측정되는 것이며, 측정된 값에 따라서 도 7에 나타낸 바와 같이 제어를 수행하게 되는 것이다.As described above, when the zinc contained in the plating tank 1 is consumed by continuously performing the plating operation, the height of the hot water surface is changed, and the height of the changed water surface is measured in real time by the height measuring sensor 13, Control is performed as shown in FIG. 7 according to the measured value.
질소 가스의 불필요 유출을 방지하기 위해 스너우트 스노클의 개방면의 간격이 일정하게 유지되도록 스너우트(10) 측면에 부착된 높이 측정센서(13)의 측정값에 따라서 스노클(11)과 탕면 사이가 소정간격(10 ~ 30mm)으로 유지되도록 하여 스너우트(10) 내의 아연 증발 에쉬, 산화아연 및 드로스 등의 이물질을 외부로 유출시켜 스너우트(10) 스노클(11) 내의 청결을 유지한다.In order to prevent unnecessary leakage of nitrogen gas, the distance between the snorkel 11 and the water surface is determined according to the measured value of the height measuring sensor 13 attached to the side of the snout 10 so that the gap between the open face of the snout snorkel is kept constant. By maintaining a predetermined interval (10 ~ 30mm) foreign substances such as zinc evaporated ash, zinc oxide and dross in the snout 10 to the outside to maintain cleanliness in the snout (10) snorkel (11).
또한 조업 중 설비의 이상상태 또는 공급되는 질소의 이상으로 공급에 문제가 발생될 때 스너우트의 개방면인 3면으로부터 외부공기와 강판의 접촉을 막기 위하여 스노클(11) 내부의 압력 측정값이 일정값( 0 ~ 5mmH2O)일때 스너우트(10)는 비상 하강되어 아연탕면을 통과한 개방면이 밀폐되어 도금불량의 손실을 줄일 수 있게되는 것이다.In addition, when there is a problem in supplying due to abnormal conditions of the equipment or supply of nitrogen during operation, the pressure measurement value inside the snorkel 11 is fixed to prevent contact between the external air and the steel plate from the open surface of the snout. When the value (0 ~ 5mmH2O) is the snout 10 is emergency lowered and the open surface passed through the zinc bath surface is sealed to reduce the loss of plating failure.
이와 같이 본 발명은 스노클 내부에 발생되는 이물질을 제거함은 물론 스노클 내부의 탕면에 발생되었던 에쉬(아연 증발 증기)를 외부로 배출시켜 강판의 표면 결함을 미연에 방지하여 강판의 표면이 청결한 상태에서 도금작업을 수행하여 도금강판의 품질을 향상시킬 수 있게 되는 특유의 효과가 있다.As described above, the present invention removes foreign substances generated in the snorkel and discharges the ash (zinc evaporated vapor) generated in the hot water surface of the snorkel to the outside to prevent surface defects of the steel sheet in advance so that the surface of the steel sheet is plated in a clean state. There is a unique effect that can be performed to improve the quality of the plated steel sheet.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020020060698A KR20040031308A (en) | 2002-10-04 | 2002-10-04 | Dross removal apparatus of snout inside for zinc galva-nizing pot |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020020060698A KR20040031308A (en) | 2002-10-04 | 2002-10-04 | Dross removal apparatus of snout inside for zinc galva-nizing pot |
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| KR20040031308A true KR20040031308A (en) | 2004-04-13 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101008100B1 (en) * | 2008-09-24 | 2011-01-13 | 주식회사 포스코 | Snout for galvanized sheet iron manufacture line |
| KR101589205B1 (en) * | 2014-12-24 | 2016-01-27 | 주식회사 포스코 | Apparatus for eliminating ash on inner wall of snout |
| KR101657010B1 (en) * | 2015-09-01 | 2016-09-13 | 최경철 | Snorkel adjustment device of snout |
| CN108342673A (en) * | 2017-01-22 | 2018-07-31 | 宝钢新日铁汽车板有限公司 | A kind of online position regulator of zinc pot stove nose |
| CN109081241A (en) * | 2018-08-08 | 2018-12-25 | 中国二十冶集团有限公司 | The method for dismounting of continuous galvanizing line furnace nose |
| CN110819925A (en) * | 2019-11-15 | 2020-02-21 | 常熟科弘材料科技有限公司 | On-line treatment method for furnace nose zinc ash of galvanized strip steel production line |
| KR20210150053A (en) * | 2020-06-03 | 2021-12-10 | 김미옥 | Apparatus for removing floating solids from molten metal |
| KR20230094449A (en) * | 2021-12-21 | 2023-06-28 | 주식회사 하림에스티이 | Snorkel for galvanized sheet iron manufacture equipment |
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| KR20000000218U (en) * | 1998-06-05 | 2000-01-15 | 이구택 | Snout with debris removal |
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| JPS5684457A (en) * | 1979-12-14 | 1981-07-09 | Nisshin Steel Co Ltd | Preventing device for adherence of foreign matter at continuous galvanizer |
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| JPH0211743A (en) * | 1988-06-29 | 1990-01-16 | Kawasaki Steel Corp | Device for preventing adhesion of ash in continuous molten metal plating |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101008100B1 (en) * | 2008-09-24 | 2011-01-13 | 주식회사 포스코 | Snout for galvanized sheet iron manufacture line |
| KR101589205B1 (en) * | 2014-12-24 | 2016-01-27 | 주식회사 포스코 | Apparatus for eliminating ash on inner wall of snout |
| KR101657010B1 (en) * | 2015-09-01 | 2016-09-13 | 최경철 | Snorkel adjustment device of snout |
| CN108342673A (en) * | 2017-01-22 | 2018-07-31 | 宝钢新日铁汽车板有限公司 | A kind of online position regulator of zinc pot stove nose |
| CN108342673B (en) * | 2017-01-22 | 2020-04-21 | 宝钢新日铁汽车板有限公司 | Online position adjusting device of zinc boiler nose |
| CN109081241A (en) * | 2018-08-08 | 2018-12-25 | 中国二十冶集团有限公司 | The method for dismounting of continuous galvanizing line furnace nose |
| CN110819925A (en) * | 2019-11-15 | 2020-02-21 | 常熟科弘材料科技有限公司 | On-line treatment method for furnace nose zinc ash of galvanized strip steel production line |
| KR20210150053A (en) * | 2020-06-03 | 2021-12-10 | 김미옥 | Apparatus for removing floating solids from molten metal |
| KR20230094449A (en) * | 2021-12-21 | 2023-06-28 | 주식회사 하림에스티이 | Snorkel for galvanized sheet iron manufacture equipment |
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