KR102351657B1 - Rapid cooling device of zinc plated steel plates - Google Patents

Rapid cooling device of zinc plated steel plates Download PDF

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KR102351657B1
KR102351657B1 KR1020200081639A KR20200081639A KR102351657B1 KR 102351657 B1 KR102351657 B1 KR 102351657B1 KR 1020200081639 A KR1020200081639 A KR 1020200081639A KR 20200081639 A KR20200081639 A KR 20200081639A KR 102351657 B1 KR102351657 B1 KR 102351657B1
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hot
steel sheet
galvanized steel
dip galvanized
pressure gas
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KR20220003866A (en
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허기복
강법성
강민종
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허기복
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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
    • C23C2/003—Apparatus
    • 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
    • C23C2/26—After-treatment
    • C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
    • C23C2/29—Cooling or quenching
    • 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
    • C23C2/0032—Apparatus specially adapted for batch coating of substrate
    • 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
    • C23C2/26—After-treatment
    • 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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Thermal Sciences (AREA)
  • Coating With Molten Metal (AREA)

Abstract

본 발명은 내부가 비어있는 형태로 형성하는 몸체(110); 상기 몸체(110)의 내부로 안개 형태의 냉각수를 분무할 수 있도록 형성하는 미분무 노즐(120); 상기 몸체(110)의 일측 또는 전방에 위치하여 고압기체의 분사속도를 증가시켜 안개 형태의 냉각수를 빨아드려 용융아연도금강판(A)의 표면으로 분사할 수 있도록 형성하는 분사유닛(130);을 포함하는 용융아연도금강판의 급속 냉각장치를 제공하기 위한 것으로, 본 발명은 고압기체의 분사압력을 이용하여 안개 형태의 냉각수를 용융아연도금강판의 표면으로 집중시켜 급속 냉각기능을 수행할 수 있는 효과를 갖는다. 특히 본 발명은 안개 형태의 냉각수가 용융아연도금강판의 표면에 잔존하는 열기와 접촉하여 순간적으로 기화하면서 냉각효율을 향상시킬 수 있는 효과를 갖는다. 또한, 본 발명은 구조가 간단하고 부피를 최소화할 수 있으므로 협소한 현장에 적용할 수 있는 효과를 갖는다.The present invention includes a body 110 formed in an empty shape; an atomizing nozzle 120 formed to spray the cooling water in the form of mist into the inside of the body 110; A spray unit 130 positioned on one side or front of the body 110 to increase the spray speed of the high-pressure gas to suck the cooling water in the form of mist and spray it onto the surface of the hot-dip galvanized steel sheet (A); The present invention is to provide a rapid cooling device for hot-dip galvanized steel sheet including has In particular, the present invention has the effect of improving cooling efficiency while vaporized cooling water in the form of mist instantaneously vaporizes in contact with the heat remaining on the surface of the hot-dip galvanized steel sheet. In addition, the present invention has an effect that can be applied to a narrow field because the structure is simple and the volume can be minimized.

Description

용융아연도금강판의 급속 냉각장치{Rapid cooling device of zinc plated steel plates}Rapid cooling device of zinc plated steel plates

본 발명은 용융아연도금강판의 급속 냉각장치에 관한 것으로, 더욱 상세하게는 용융아연도금강판의 표면으로 안개 형태의 냉각수를 분사하여 급속 냉각기능을 수행할 수 있도록 하는 용융아연도금강판의 급속 냉각장치에 관한 것이다.The present invention relates to a rapid cooling device for hot-dip galvanized steel sheet, and more particularly, to a rapid cooling device for hot-dip galvanized steel sheet that can perform a rapid cooling function by spraying cooling water in the form of mist onto the surface of the hot-dip galvanized steel sheet is about

일반적으로 용융아연도금강판은 약 470 내지 560℃의 온도범위로 도금한 후 약 300℃ 이하로 냉각시켜 가공과정에서 도금층이 분말형태로 떨어지는 파우더링 현상 및 청열 취성의 발생을 방지하고 이송효율 및 후속공정의 작업성을 확보한다.In general, hot-dip galvanized steel sheet is plated in a temperature range of about 470 to 560°C and then cooled to about 300°C or less to prevent the powdering phenomenon in which the plating layer falls into powder form and the occurrence of blue-heat brittleness during processing, and to improve transport efficiency and subsequent Ensure the workability of the process.

그러나 종래에는 용융아연도금강판의 표면으로 고압기체 또는 액체를 분사하여 냉각기능을 수행하고 있으나, 이는 용융아연도금강판의 표면에 잔존하는 열기로 인해 고압기체 또는 액체가 균일하게 도달할 수 없으므로 냉각효율을 저하시키는 문제를 갖게 되었다.However, in the prior art, the cooling function is performed by spraying high-pressure gas or liquid onto the surface of the hot-dip galvanized steel sheet, but this is because the high-pressure gas or liquid cannot reach uniformly due to the heat remaining on the surface of the hot-dip galvanized steel sheet. had the problem of lowering it.

또한, 냉각이 완료되지 않은 용융아연도금강판의 표면에 냉각수를 직접 분사할 경우 도금층 표면에 움푹 패인 피트 마크(pit mark)가 발생하는 문제를 갖게 되었다.In addition, when cooling water is directly sprayed on the surface of the hot-dip galvanized steel sheet that has not been cooled, there is a problem in that pit marks are formed on the surface of the plating layer.

특히 용융아연도금강판을 냉각시키기 위한 대형 송풍장치 및 펌프 등이 필요하므로 구조가 복잡하고 부피가 증가하여 사용효율을 저하시키는 문제를 갖게 되었다.In particular, since a large blower and a pump are required to cool the hot-dip galvanized steel sheet, the structure is complicated and the volume increases, thereby lowering the efficiency of use.

아울러 용융아연도금강판의 냉각효율이 저하되면서 도금층의 미응고 부분이 잔존하여 생산품질을 저하시키는 문제를 갖게 되었다.In addition, as the cooling efficiency of the hot-dip galvanized steel sheet was lowered, an unsolidified portion of the plated layer remained, thereby lowering the production quality.

한국공개특허공보 제10-2003-0048597호(2003.06.25.)Korean Patent Publication No. 10-2003-0048597 (June 25, 2003) 한국공개특허공보 제10-2004-0055998호(2004.06.30.)Korean Patent Laid-Open Publication No. 10-2004-0055998 (June 30, 2004) 한국등록특허공보 제10-0887862호(2009.03.06.)Korean Patent Publication No. 10-0887862 (2009.03.06.) 한국공개실용신안공보 제20-2010-0002846호(2010.03.11.)Korean Public Utility Model Publication No. 20-2010-0002846 (2010.03.11.) 한국등록실용신안공보 제20-0464096호(2012.12.11.)Korean Utility Model Publication No. 20-0464096 (2012.12.11.) 한국공개특허공보 제10-2013-0034355호(2013.04.05.)Korean Patent Publication No. 10-2013-0034355 (2013.04.05.) 한국공개실용신안공보 제20-2014-0001924호(2014.04.03.)Korean Utility Model Publication No. 20-2014-0001924 (2014.04.03.) 한국공개특허공보 제10-2015-0089324호(2015.08.05.)Korean Patent Publication No. 10-2015-0089324 (2015.08.05.) 한국등록특허공보 제10-1858854호(2018.05.17.)Korea Patent Publication No. 10-1858854 (2018.05.17.) 한국공개특허공보 제10-2020-0044428호(2020.04.29.)Korean Patent Publication No. 10-2020-0044428 (2020.04.29.)

따라서 본 발명은 상기와 같은 종래의 문제를 해결하기 위해 안출한 것으로서,Therefore, the present invention has been devised to solve the conventional problems as described above,

본 발명은 고압기체의 분사압력을 이용하여 안개 형태의 냉각수를 용융아연도금강판의 표면으로 균일하게 분사하여 열기와 함께 기화시킴으로써 냉각기능을 수행할 수 있는 용융아연도금강판의 급속 냉각장치를 제공함에 목적이 있다.The present invention provides a rapid cooling device for hot-dip galvanized steel sheet capable of performing a cooling function by uniformly spraying cooling water in the form of mist onto the surface of a hot-dip galvanized steel sheet using the injection pressure of high-pressure gas to vaporize it together with heat. There is a purpose.

상기 목적을 달성하기 위한 본 발명 용융아연도금강판의 급속 냉각장치는,The rapid cooling device of the present invention for hot-dip galvanized steel sheet for achieving the above object,

내부가 비어있는 형태로 형성하는 몸체(110); 상기 몸체(110)의 내부로 안개 형태의 냉각수를 분무할 수 있도록 형성하는 미분무 노즐(120); 상기 몸체(110)의 일측 또는 전방에 위치하여 고압기체의 분사속도를 증가시켜 안개 형태의 냉각수를 빨아드려 용융아연도금강판(A)의 표면으로 분사할 수 있도록 형성하는 분사유닛(130);을 포함하는 것을 특징으로 한다.The body 110 is formed in the form of an empty interior; an atomizing nozzle 120 formed so as to spray the cooling water in the form of mist into the inside of the body 110; A spray unit 130 positioned on one side or front of the body 110 to increase the spray speed of the high-pressure gas to suck the cooling water in the form of mist and spray it onto the surface of the hot-dip galvanized steel sheet (A); characterized by including.

여기서 상기 몸체(110)의 후방 또는 일측에 외부 공기를 흡입할 수 있도록 형성하는 흡입공(111);을 포함하는 것을 특징으로 한다.Here, a suction hole 111 formed so as to suck external air to the rear or one side of the body 110; characterized in that it includes.

한편, 상기 분사유닛(130)은 외측에 고압기체를 공급받기 위한 공급부(131)를 형성하고, 중앙에 후방에서 전방으로 갈수록 점차 폭이 증가하도록 경사지는 경사부(132)를 구비하며, 내측에 고압기체가 유입할 수 있도록 유입공간(133)을 형성하는 분사몸체(134); 상기 분사몸체(134)의 후방에서 중앙으로 갈수록 점차 전방으로 기울어지도록 형성하는 유도구(135); 상기 경사부(132)와 유도구(135)의 사이에 일정간격 떨어져 고압기체를 배출할 수 있도록 형성하는 배출부(136);를 포함하는 것을 특징으로 한다.On the other hand, the injection unit 130 forms a supply part 131 for receiving the high-pressure gas on the outside, and has an inclined part 132 that is inclined so that the width gradually increases from the rear to the front in the center, and on the inside The injection body 134 forming an inlet space 133 so that the high-pressure gas can be introduced; an induction port 135 that is gradually inclined forward toward the center from the rear of the injection body 134; and a discharge unit 136 formed to discharge the high-pressure gas at a predetermined interval between the inclined unit 132 and the induction port 135 .

이때 상기 경사부(132)의 후방에 형성하는 유도부(137); 상기 경사부(132)의 후방에 상기 유입공간(133)을 향하도록 형성하는 정체유도부(138);를 포함하는 것을 특징으로 한다. In this case, an induction part 137 formed in the rear of the inclined part 132; It characterized in that it comprises a; stagnation induction part 138 formed to face the inlet space 133 at the rear of the inclined part 132.

본 발명은 고압기체의 분사압력을 이용하여 안개 형태의 냉각수를 용융아연도금강판의 표면으로 집중시켜 급속 냉각기능을 수행할 수 있는 효과를 갖는다.The present invention has the effect of concentrating the cooling water in the form of mist on the surface of the hot-dip galvanized steel sheet by using the injection pressure of the high-pressure gas to perform the rapid cooling function.

특히 본 발명은 안개 형태의 냉각수가 용융아연도금강판의 표면에 잔존하는 열기와 접촉하여 순간적으로 기화하면서 냉각효율을 향상시킬 수 있는 효과를 갖는다.In particular, the present invention has the effect of improving cooling efficiency while vaporized cooling water in the form of mist instantaneously vaporizes in contact with the heat remaining on the surface of the hot-dip galvanized steel sheet.

또한, 본 발명은 구조가 간단하고 부피를 최소화할 수 있으므로 협소한 현장에 적용할 수 있는 효과를 갖는다.In addition, the present invention has an effect that can be applied to a narrow site because the structure is simple and the volume can be minimized.

도 1은 본 발명 용융아연도금강판의 급속 냉각장치에 대한 실시예를 나타내기 위한 단면도.
도 2는 본 발명 용융아연도금강판의 급속 냉각장치에 대한 다른 실시예를 나타내기 위한 단면도.
도 3은 본 발명 용융아연도금강판의 급속 냉각장치에 대한 작동상태를 나타내기 위한 단면도.1 is a cross-sectional view showing an embodiment of a rapid cooling device for hot-dip galvanized steel sheet according to the present invention.
Figure 2 is a cross-sectional view for showing another embodiment of the present invention rapid cooling device for hot-dip galvanized steel sheet.
3 is a cross-sectional view showing an operating state of the rapid cooling device for hot-dip galvanized steel sheet according to the present invention.

상기한 바와 같은 본 발명의 목적을 달성하기 위한 기술적 구성을 첨부한 도면에 의해 더욱 상세히 설명하면 다음과 같다.The technical configuration for achieving the object of the present invention as described above will be described in more detail with reference to the accompanying drawings.

도 1은 본 발명 용융아연도금강판의 급속 냉각장치에 대한 실시예를 나타내기 위한 단면도이고, 도 2는 본 발명 용융아연도금강판의 급속 냉각장치에 대한 다른 실시예를 나타내기 위한 단면도이며, 도 3은 본 발명 용융아연도금강판의 급속 냉각장치에 대한 작동상태를 나타내기 위한 단면도를 도시한 것이다.1 is a cross-sectional view showing an embodiment of a rapid cooling device for a hot-dip galvanized steel sheet of the present invention, and FIG. 2 is a cross-sectional view showing another embodiment of a rapid cooling device for a hot-dip galvanized steel sheet according to the present invention. 3 is a cross-sectional view showing the operating state of the rapid cooling device for hot-dip galvanized steel sheet according to the present invention.

본 발명은 내부가 비어있는 형태로 형성하는 몸체(110); 상기 몸체(110)의 내부로 안개 형태의 냉각수를 분무할 수 있도록 형성하는 미분무 노즐(120); 상기 몸체(110)의 일측 또는 전방에 위치하여 고압기체의 분사속도를 증가시켜 안개 형태의 냉각수를 빨아드려 용융아연도금강판(A)의 표면으로 분사할 수 있도록 형성하는 분사유닛(130);을 포함한다.The present invention includes a body 110 formed in an empty shape; an atomizing nozzle 120 formed so as to spray the cooling water in the form of mist into the inside of the body 110; A spray unit 130 positioned on one side or front of the body 110 to increase the spray speed of the high-pressure gas to suck the cooling water in the form of mist and spray it onto the surface of the hot-dip galvanized steel sheet (A); include

특히 상기 몸체(110)는 내부에 상기 미분무 노즐(120)의 작동으로 발생하는 안개 형태의 냉각수를 저장할 수 있다.In particular, the body 110 may store the cooling water in the form of mist generated by the operation of the fine spray nozzle 120 therein.

이때 상기 몸체(110)의 후방 또는 일측에 외부 공기를 흡입할 수 있도록 형성하는 흡입공(111);을 포함하여 상기 분사유닛(130)의 작동으로 발생하는 음압으로 인해서 안개 형태의 냉각수와 함께 외부 공기가 빨려들어가면서 유속을 증가시켜 용융아연도금강판(A)의 표면으로 분사할 수 있도록 유도한다.At this time, due to the negative pressure generated by the operation of the injection unit 130, including the suction hole 111, which is formed to suck the external air on the rear or one side of the body 110, As the air is sucked in, the flow rate is increased to induce spraying onto the surface of the hot-dip galvanized steel sheet (A).

여기서 상기 흡입공(111)은 일정 지름 또는 규격으로 형성하고, 상기 흡입공(111)을 개폐범위를 조절할 수 있도록 형성하는 밸브 등과 같은 개폐구(미 도시함)를 포함할 수 있다.Here, the suction hole 111 may have a predetermined diameter or standard, and may include an opening/closing port (not shown) such as a valve that forms the suction hole 111 to adjust the opening/closing range.

본 발명에서 상기 미분무 노즐(120)은 냉각 기능을 수행하기 위한 냉각수(물)를 공급받아서 안개 형태로 분무하기 위한 구성으로, 이에 대한 세부 구성 및 작동원리는 당업계에서 널리 알려진 공지 기술이므로 상세한 서술은 생략하기로 한다.In the present invention, the fine spray nozzle 120 is a configuration for receiving cooling water (water) to perform a cooling function and spraying it in the form of mist. The description will be omitted.

이때 상기 미분무 노즐(120)과 분사유닛(130)은 도 2에 도시한 바와 같이 안개 형태의 냉각수 발생량 및 냉각효율에 따라서 적어도 하나 이상을 상기 몸체(110)의 후방 또는 전방에 형성할 수 있다.At this time, at least one of the atomizing nozzle 120 and the spraying unit 130 may be formed in the rear or front of the body 110 according to the amount of cooling water generated in the mist form and cooling efficiency, as shown in FIG. 2 . .

아울러 상기 분사유닛(130)은 외부에서 공급하는 고압기체가 통과하면서 동시에 안개 형태의 냉각수를 빨아드려 용융아연도금강판(A)의 표면으로 분사함으로써 열기를 냉각수가 접촉하면서 순간 기화하여 급속 냉각기능을 수행할 수 있다.In addition, the injection unit 130 sucks the cooling water in the form of mist while passing the high-pressure gas supplied from the outside and sprays it onto the surface of the hot-dip galvanized steel sheet (A) to instantly vaporize the hot air as the cooling water comes into contact with it to provide a rapid cooling function. can be done

특히 상기 분사유닛(130)은 안개 형태의 냉각수가 용융아연도금강판(A)의 표면으로 균일하게 분사할 수 있도록 방향성을 확보함은 물론 대형 송풍장치 및 펌프 등과 같은 별도의 동력수단이 필요없이 고압기체의 분사압력을 증대시켜 안개 형태의 냉각수를 용융아연도금강판(A)의 표면으로 분사할 수 있다.In particular, the spray unit 130 secures the direction so that the cooling water in the form of mist can be uniformly sprayed onto the surface of the hot-dip galvanized steel sheet (A), and high pressure without the need for separate power means such as large blowers and pumps. By increasing the injection pressure of the gas, the cooling water in the form of mist can be sprayed onto the surface of the hot-dip galvanized steel sheet (A).

이러한 상기 분사유닛(130)은 도 1에 도시한 바와 같이 외측에 고압기체를 공급받기 위한 공급부(131)를 형성하고, 중앙에 후방에서 전방으로 갈수록 점차 폭이 증가하도록 경사지는 경사부(132)를 구비하며, 내측에 고압기체가 유입할 수 있도록 유입공간(133)을 형성하는 분사몸체(134); 상기 분사몸체(134)의 후방에서 중앙으로 갈수록 점차 전방으로 기울어지도록 형성하는 유도구(135); 상기 경사부(132)와 유도구(135)의 사이에 일정간격 떨어져 고압기체를 배출할 수 있도록 형성하는 배출부(136);를 포함하는 것을 특징으로 한다.As shown in FIG. 1, the injection unit 130 forms a supply part 131 for receiving high-pressure gas on the outside, and an inclined part 132 that is inclined so that the width gradually increases from the rear to the front in the center. a spray body 134 having an inlet space 133 to allow high-pressure gas to flow therein; an induction port 135 that is gradually inclined forward toward the center from the rear of the injection body 134; and a discharge unit 136 formed to discharge the high-pressure gas at a predetermined interval between the inclined unit 132 and the induction port 135 .

특히 상기 공급부(131)는 외부에서 공급하는 고압기체를 상기 유입공간(133)의 내부로 공급하는 역할을 수행한다.In particular, the supply unit 131 serves to supply the high-pressure gas supplied from the outside to the inside of the inlet space (133).

이때 상기 공급부(131)는 고압기체의 압력을 제어하기 위한 밸브 또는 고압기체의 공급량을 조절하기 위한 개폐밸브를 포함할 수 있으며, 고압기체에 남아있는 이물질을 걸러낼 수 있는 필터를 포함할 수 있다.In this case, the supply unit 131 may include a valve for controlling the pressure of the high-pressure gas or an on/off valve for adjusting the supply amount of the high-pressure gas, and may include a filter capable of filtering out foreign substances remaining in the high-pressure gas. .

또한, 상기 경사부(132)는 후방은 폭이 좁고 전방으로 갈수록 점차 폭이 증가하도록 기울어진 상태로 상기 배출부(136)를 통해서 배출하는 고압기체가 상기 경사부(132)의 후방을 통과하면서 속도가 증가하여 안개 형태의 냉각수와 고압기체를 빨아드려 용융아연도금강판(A)의 표면으로 분사할 수 있도록 유도한다.In addition, the inclined portion 132 has a narrow rear width and is inclined to gradually increase in width toward the front, and the high pressure gas discharged through the discharge portion 136 passes through the rear of the inclined portion 132 while As the speed increases, it sucks the mist-type cooling water and high-pressure gas, and induces it to be sprayed onto the surface of the hot-dip galvanized steel sheet (A).

여기서 상기 경사부(132)의 후방에 형성하는 유도부(137);를 포함하여 상기 배출부(136)를 통해서 배출되는 고압기체와 안개 형태의 냉각수가 충돌 및 저항없이 자연스럽게 상기 경사부(132)를 따라서 분사할 수 있도록 호형상 또는 곡선형상으로 형성한다.Here, the induction part 137 formed at the rear of the inclined part 132; including; the high-pressure gas discharged through the discharge part 136 and the cooling water in the form of a mist naturally strike the inclined part 132 without collision and resistance. Therefore, it is formed in an arc shape or a curved shape so that it can be sprayed.

특히 상기 경사부(132)의 후방에 상기 유입공간(133)을 향하도록 형성하는 정체유도부(138);를 포함하여 상기 배출부(136)를 통해서 배출하는 고압기체가 충돌하여 다시 상기 유입공간(133)으로 순환하면서 일정한 압력을 유지할 수 있도록 유도할 수 있다.In particular, the high-pressure gas discharged through the discharge unit 136, including a stagnation induction unit 138 formed to face the inlet space 133 at the rear of the inclined unit 132 collides with the inlet space ( 133), it can be induced to maintain a constant pressure while circulating.

그리고 상기 유입공간(133)은 고압기체를 저장한 상태로 상기 배출부(136)를 통해서 배출할 수 있도록 유도한다.And the inlet space 133 guides the high-pressure gas to be discharged through the discharge unit 136 in a stored state.

한편, 상기 유도구(135)는 상기 유입공간(133)을 통과하는 고압기체가 상기 배출부(136)로 집중할 수 있도록 유도하기 위해서 상기 분사몸체(134)의 후방에서 중앙으로 갈수록 점차 전방으로 기울어지도록 형성한다.On the other hand, in order to induce the high-pressure gas passing through the inlet space 133 to be concentrated to the outlet 136, the induction port 135 is gradually inclined forward from the rear to the center of the injection body 134. to form

특히 상기 배출부(136)는 상기 유입공간(133)을 통해서 배출하는 고압기체의 유속을 증가시키고 폭이 좁은 상기 경사부(132)의 후방을 통과하면서 기압이 낮아져 음압이 발생하므로 상기 몸체(110)의 내부에 위치한 안개 형태의 냉각수를 빨아드려 용융아연도금강판(A)의 표면으로 분사할 수 있다.In particular, the discharge part 136 increases the flow rate of the high-pressure gas discharged through the inlet space 133 and passes through the rear of the narrow inclined part 132 , the air pressure is lowered and negative pressure is generated, so that the body 110 ), it can suck the cooling water in the form of mist and spray it onto the surface of the hot-dip galvanized steel sheet (A).

따라서 본 발명은 도 3에 도시된 바와 같이 상기 미분무 노즐(120)의 작동으로 안개 형태의 냉각수가 상기 몸체(110)의 내부에 위치한 상태에서, 상기 분사유닛(130)의 작동으로 고압기체가 상기 배출부(136)를 통과하면서 음압을 발생시켜 안개 형태의 냉각수를 빨아드려 용융아연도금강판(A)의 표면으로 분사함으로써 안개 형태의 냉각수가 열기와 접촉하면서 순간 기화하여 급속 냉각기능을 수행할 수 있다.Therefore, in the present invention, as shown in FIG. 3 , in a state where the cooling water in the form of mist is located inside the body 110 by the operation of the fine atomization nozzle 120 , the high-pressure gas is generated by the operation of the injection unit 130 . By generating negative pressure while passing through the discharge unit 136, the cooling water in the form of mist is sucked and sprayed onto the surface of the hot-dip galvanized steel sheet (A). can

이처럼 상기와 같이 본 발명의 실시예에 대하여 상세히 설명하였으나, 본 발명의 권리범위는 이에 한정되지 않으며, 본 발명의 실시예와 실질적으로 균등의 범위에 있는 구성까지 본 발명의 권리범위에 포함됨은 당연하다. As described above, the embodiment of the present invention has been described in detail, but the scope of the present invention is not limited thereto, and it is natural that the present invention is included in the scope of the present invention to a configuration substantially equivalent to the embodiment of the present invention. do.

100: 본 발명 용융아연도금강판의 급속 냉각장치
110: 몸체 111: 흡입공
120: 미분무 노즐
130: 분사유닛 131: 공급부
132: 경사부 133: 유입공간
134: 분사몸체 135: 유도구
136: 배출부 137: 유도부
138: 정체유도부
A: 용융아연도금강판100: rapid cooling device of the present invention hot-dip galvanized steel sheet
110: body 111: suction hole
120: fine atomization nozzle
130: injection unit 131: supply unit
132: inclined portion 133: inflow space
134: injection body 135: guide
136: discharge unit 137: induction unit
138: stagnation induction unit
A: Hot-dip galvanized steel sheet

Claims (4)

내부가 비어있는 형태로 형성하는 몸체(110); 상기 몸체(110)의 내부로 안개 형태의 냉각수를 분무할 수 있도록 형성하는 미분무 노즐(120); 상기 몸체(110)의 일측 또는 전방에 위치하여 고압기체의 분사속도를 증가시켜 안개 형태의 냉각수를 빨아드려 용융아연도금강판(A)의 표면으로 분사할 수 있도록 형성하는 분사유닛(130);을 포함하되, 상기 분사유닛(130)은 외측에 고압기체를 공급받기 위한 공급부(131)를 형성하고, 중앙에 후방에서 전방으로 갈수록 점차 폭이 증가하도록 경사지는 경사부(132)를 구비하며, 내측에 고압기체가 유입할 수 있도록 유입공간(133)을 형성하는 분사몸체(134); 상기 분사몸체(134)의 후방에서 중앙으로 갈수록 점차 전방으로 기울어지도록 형성하는 유도구(135); 상기 경사부(132)와 유도구(135)의 사이에 일정간격 떨어져 고압기체를 배출할 수 있도록 형성하는 배출부(136);를 포함하는 것을 특징으로 하는 용융아연도금강판의 급속 냉각장치.The body 110 is formed in the form of an empty interior; an atomizing nozzle 120 formed so as to spray the cooling water in the form of mist into the inside of the body 110; A spray unit 130 positioned on one side or front of the body 110 to increase the spray speed of the high-pressure gas to suck the cooling water in the form of mist and spray it onto the surface of the hot-dip galvanized steel sheet (A); Including, but the injection unit 130 is provided with a supply part 131 for receiving the high-pressure gas on the outside, the center is provided with an inclined part 132 that is inclined so as to gradually increase in width from the rear to the front, the inside The injection body 134 for forming an inlet space 133 so that the high-pressure gas can be introduced into the; an induction port 135 that is gradually inclined forward toward the center from the rear of the injection body 134; The rapid cooling device for hot-dip galvanized steel sheet, characterized in that it includes; a discharge part (136) formed between the inclined part (132) and the induction port (135) to discharge the high-pressure gas at a predetermined distance. 청구항 1에 있어서, 상기 몸체(110)의 후방 또는 일측에 외부 공기를 흡입할 수 있도록 형성하는 흡입공(111);을 포함하는 것을 특징으로 하는 용융아연도금강판의 급속 냉각장치.The rapid cooling device for hot-dip galvanized steel sheet as set forth in claim 1, further comprising a suction hole (111) formed so as to suck in external air at the rear or one side of the body (110). 삭제delete 청구항 1에 있어서, 이때 상기 경사부(132)의 후방에 형성하는 유도부(137); 상기 경사부(132)의 후방에 상기 유입공간(133)을 향하도록 형성하는 정체유도부(138);를 포함하는 것을 특징으로 하는 용융아연도금강판의 급속 냉각장치.The method according to claim 1, In this case, the guide portion 137 formed in the rear of the inclined portion (132); The rapid cooling device for hot-dip galvanized steel sheet, characterized in that it includes; a stagnation induction part (138) formed at the rear of the inclined part (132) to face the inlet space (133).
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