KR20020020112A - Screw Type Nozzle for Cold Rolled steel sheet Surface defect Prevention - Google Patents

Screw Type Nozzle for Cold Rolled steel sheet Surface defect Prevention Download PDF

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Publication number
KR20020020112A
KR20020020112A KR1020000053253A KR20000053253A KR20020020112A KR 20020020112 A KR20020020112 A KR 20020020112A KR 1020000053253 A KR1020000053253 A KR 1020000053253A KR 20000053253 A KR20000053253 A KR 20000053253A KR 20020020112 A KR20020020112 A KR 20020020112A
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KR
South Korea
Prior art keywords
steel sheet
nozzle
washing water
cold rolled
rolled steel
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Application number
KR1020000053253A
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Korean (ko)
Inventor
임영홍
Original Assignee
이구택
포항종합제철 주식회사
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Priority to KR1020000053253A priority Critical patent/KR20020020112A/en
Publication of KR20020020112A publication Critical patent/KR20020020112A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0269—Cleaning
    • B21B45/0275—Cleaning devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0269—Cleaning
    • B21B45/0272—Cleaning compositions

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

PURPOSE: A spiral nozzle for preventing surface defects of a cold rolled steel sheet is provided which improves washing efficiency of the steel sheet by forming a spiral jet orifice at a nozzle from which washing water is sprayed so that washing water is uniformly sprayed in a wide angle, and vortex is formed on the surface of a strip. CONSTITUTION: In forming a nozzle(7) spraying washing water onto a steel sheet, the spiral nozzle for preventing surface defects of a cold rolled steel sheet comprises a coupling part(31) which is formed at the upper part of the nozzle(7); a conical body(30) which is formed at the lower part of the coupling part(31); and a spiral jet orifice(32) which is spirally formed from the upper part to the lower part of the body(30) on the surrounding surface of the conical body(30).

Description

냉연강판 표면결함 방지용 나선형 노즐{Screw Type Nozzle for Cold Rolled steel sheet Surface defect Prevention}Screw type nozzle for cold rolled steel sheet surface defect prevention

본 발명은 냉연강판 표면결함 방지용 나선형 노즐에 관한 것으로서, 더욱 상세하게는 노즐의 몸체 둘레면에 나선형태의 분사구를 형성하여 강판의 세척효율을 향상시킬 수 있는 냉연강판 표면결함 방지용 나선형 노즐에 관한 것이다.The present invention relates to a spiral nozzle for preventing a surface defect of a cold rolled steel sheet, and more particularly, to a spiral nozzle for preventing a surface defect of a cold rolled steel sheet which can improve the cleaning efficiency of a steel sheet by forming a spiral injection hole on a body circumferential surface of the nozzle. .

일반적으로, 냉연공정에서 생산된 강판은 산세설비를 통과하면서 그 강판의 표면에 부착된 이물질 및 스케일을 제거하고 있으며 이러한 산세설비는 도 1에 나타낸 바와 같이 강판(1)이 산세조(2)를 통과하면 그 산세조(2)에 담겨진 산세액(염산)에 의해서 상기 강판(1) 표면의 이물질 및 스케일이 제거된 후 세척수가 담겨진 세척조(3)를 통과하면서 강판(1)의 표면에 묻어있는 산세액이 세척된다.In general, the steel sheet produced in the cold rolling process removes foreign substances and scales adhered to the surface of the steel sheet while passing through the pickling equipment, and the pickling equipment includes the pickling tank 2 as shown in FIG. After passing through, the pickling liquid (hydrochloric acid) contained in the pickling tank (2) removes foreign substances and scale on the surface of the steel sheet (1) and passes through the washing tank (3) containing the washing water, which is buried on the surface of the steel sheet (1). Pickling liquid is washed.

상기 강판(1)의 표면을 세척할 때에는 펌프(4)를 작동시키면 상기 세척조(3)의 하부에 설치된 흡입관(5)을 통하여 세척조(3)에 담겨진 세척수가 흡입된 후 공급관(6)을 통하여 이동하게 된 후 상기 공급관(6)에 마련된 복수개의 노즐(7)을 통하여 분사되므로 강판(1)의 표면을 세척하게 된다.When washing the surface of the steel sheet 1, when the pump 4 is operated, the washing water contained in the washing tank 3 is sucked through the suction pipe 5 installed in the lower portion of the washing tank 3, and then through the supply pipe 6. After the movement is injected through a plurality of nozzles (7) provided in the supply pipe (6) to clean the surface of the steel sheet (1).

이와 같이 세척된 강판(1)은 건조기(8)를 통과하면서 표면에 묻어있는 세척수가 건조되어 후 공정으로 이송된다.The steel sheet 1 thus washed is dried by the washing water on the surface while passing through the dryer 8 and then transferred to the subsequent process.

특히 상기 산세설비를 통과한 강판의 표면에 산세액이 잔류하게 되면 염산의 화학반응( Fe+2HCl=>FeCl2+H2↑)으로 인하여 강판이 부식되고 2차 산화 반응을 촉진시켜 강판(Fe) 표면에 불규칙한 얼룩무늬 형태의 부식이 일어나게 되며 이러한 강판을 ??은 박판의 냉연강판으로 압연시 두께 불량이 발생되므로 강판을 깨끗하게 세척할 수 있는 노즐이 다양한 형태로 개발되어 사용되고 있다.In particular, when the pickling liquid remains on the surface of the steel sheet passed through the pickling equipment, the steel sheet is corroded by the chemical reaction of hydrochloric acid (Fe + 2HCl => FeCl2 + H2 ↑) and the secondary oxidation reaction is promoted to promote the surface of the steel sheet (Fe). Irregular staining occurs in the shape of the cold rolled steel sheet of the sheet is a cold rolled steel sheet because the thickness defect occurs when the nozzle to clean the steel sheet has been developed and used in various forms.

도 2는 종래의 노즐을 나타낸 사시도이다.2 is a perspective view showing a conventional nozzle.

여기에서 참조되는 바와 같이 몸체(10)의 상부에 세척수가 공급되는 공급관에 결합되는 체결부(11)가 마련되고 상기 몸체(10)의 저면에는 세척수의 분사방향을 유도하기 위한 슬릿홈(12)이 마련되며 그 슬릿홈(12)의 중앙에는 몸체(10)의 내부와 통하여진 타원형 분사구(13)가 형성되어 있다.As referred to herein, a fastening part 11 coupled to a supply pipe to which washing water is supplied is provided at an upper portion of the body 10, and a slit groove 12 for guiding the spraying direction of the washing water is provided at the bottom of the body 10. Is provided and the center of the slit groove 12 is formed with an elliptical injection hole 13 through the inside of the body 10.

이러한 노즐(7)의 분사구(13)는 그 크기가 작아 세척수에 포함된 이물질에 의한 막힘 발생으로 세척수의 분사효율이 저하되었으며 분사되는 세척수의 분사각이 작으므로 강판(1)의 전체면을 세척하기 위해서는 복수개의 노즐(7)을 설치하여야 하지만 세척조내의 좁은공간에 설치하는데 한계가 있었다.Since the nozzle 13 of the nozzle 7 has a small size, the spraying efficiency of the washing water is reduced due to clogging caused by foreign substances included in the washing water, and the spray angle of the washing water is small, thus cleaning the entire surface of the steel sheet 1. In order to install a plurality of nozzles (7) but there was a limit to the installation in a narrow space in the washing tank.

따라서 상기 노즐(7)을 세척조에 복수개 설치하여 세척수를 분사시키면서 상기 강판(1)의 표면에 묻어있는 산세액을 세척할 때에는 상기 노즐(7)의 저면에 형성된 분사구(13)을 통하여 분사되는 세척수가 슬릿홈(12)에 유도되면서 분사되므로 도 3에 나타낸 바와 같이 강판(1)의 전체면을 세척하지 못하고 일부분만 세척하게 되므로 상기 강판(1)의 세척면(1a)을 제외한 표면에는 불규칙한 얼룩무늬 형태의 부식이 발생하는 문제점이 있었다.Therefore, when washing the pickling liquid buried on the surface of the steel sheet 1 while spraying the washing water by installing a plurality of the nozzle (7) in the washing tank washing water sprayed through the injection port 13 formed on the bottom of the nozzle (7) Is sprayed while being guided to the slit groove 12, so as not shown in Figure 3 can not wash the entire surface of the steel sheet 1, only a part of the cleaning surface irregular except the cleaning surface (1a) of the steel sheet (1) There was a problem that corrosion of the pattern form occurs.

도 4는 종래 다른 실시예의 노즐을 나타낸 사시도이다.Figure 4 is a perspective view showing a nozzle of another conventional embodiment.

여기에서 참조되는 바와 같이 몸체(20)의 상부에 세척수가 공급되는 공급관에 결합되는 체결부(21)가 마련되고 상기 몸체(20)의 내측 둘레면에는 세척수에 와류를 발생시키기 위한 복수개의 나선형 홈(22)이 마련되며 상기 몸체(20)의 하부측 둘레면에는 내부와 통하여진 분사구(23)가 복수개 형성되어 있다.As referred to herein, a fastening portion 21 coupled to a supply pipe to which washing water is supplied is provided on the upper portion of the body 20, and a plurality of spiral grooves are formed on the inner circumferential surface of the body 20 to generate vortices in the washing water. 22 is provided, and a plurality of injection holes 23 formed therein are formed on the lower circumferential surface of the body 20.

이러한 노즐(7)은 내부에서 세척수에 와류가 발생되므로 노즐이 막히는 것이방지되고 다수의 분사구(23)를 통하여 분사되는 세척수의 분사각이 넓어 노즐(7)의 설치 개수를 줄일 수는 있다.Since the vortex is generated in the washing water in the nozzle 7, the nozzle is prevented from being blocked, and the spray angle of the washing water sprayed through the plurality of injection holes 23 is wide, thereby reducing the number of installation of the nozzle 7.

그러나 상기 노즐(7)을 통하여 분사되는 세척수가 바깥쪽에는 분사되지만 노즐(7)의 직하방에는 분사되지 못하여 강판(1)의 전체면을 세척하는데 한계가 있었다.However, the washing water sprayed through the nozzle 7 is sprayed to the outside, but cannot be sprayed directly below the nozzle 7, there is a limit to washing the entire surface of the steel sheet (1).

따라서 상기 노즐(7)을 세척조에 설치하여 세척수를 분사시키면서 상기 강판(1)의 표면에 묻어있는 산세액을 세척할 때에는 상기 노즐(7)의 하부 둘레면에 형성된 복수개의 분사구(13)를 통하여 분사되므로 도 5에 나타낸 바와 같이 강판(1)의 전체면을 세척하지 못하고 일부분만 세척하게 되므로 상기 강판(1)의 세척면(1a)을 제외한 표면에는 불규칙한 얼룩무늬 형태의 부식이 발생하는 문제점을 해결하지는 못하였다.Therefore, when washing the pickling liquid buried in the surface of the steel sheet 1 while the nozzle (7) is installed in the washing tank to spray the washing water, through the plurality of injection holes 13 formed in the lower peripheral surface of the nozzle (7) Since it is sprayed, as shown in FIG. 5, the entire surface of the steel sheet 1 is not washed, and only a part of the steel sheet 1 is washed. Therefore, the surface of the steel sheet 1 except for the cleaning surface 1a may have irregular spots. It did not solve.

본 발명은 상기와 같은 문제점을 해결하기 위하여 발명한 것으로서, 그 목적은 세척수가 분사되는 노즐에 나선형태의 분사구를 형성하여 세척수가 넓은 각도로 균일하게 분사됨은 물론 스트립의 표면에서 와류가 발생되어 강판의 세척효율을 향상시킬 수 있는 냉연강판 표면결함 방지용 나선형 노즐을 제공함에 있다.The present invention has been invented to solve the above problems, the object of which is to form a spiral injection hole in the nozzle in which the washing water is sprayed, the washing water is uniformly sprayed at a wide angle, as well as the vortex generated on the surface of the strip steel sheet To provide a spiral nozzle for preventing the surface defects of cold rolled steel sheet to improve the cleaning efficiency of the.

도 1은 일반적인 산세설비를 나타낸 사시도.1 is a perspective view showing a general pickling equipment.

도 2는 종래의 노즐을 나타낸 사시도.Figure 2 is a perspective view showing a conventional nozzle.

도 3은 종래의 노즐로 냉연강판을 세척하는 상태의 사시도.Figure 3 is a perspective view of a state of washing the cold rolled steel sheet with a conventional nozzle.

도 4는 종래 다른 실시예의 노즐을 나타낸 사시도.Figure 4 is a perspective view of a nozzle of another conventional embodiment.

도 5는 종래 다른 실시에의 노즐로 냉연강판을 세척하는 상태의 사시도.Figure 5 is a perspective view of a state of washing the cold rolled steel sheet with a nozzle of another conventional embodiment.

도 6은 본 발명에 따른 노즐을 나타낸 사시도.Figure 6 is a perspective view of a nozzle according to the present invention.

도 7은 본 발명에 따른 노즐을 나타낸 단면도.7 is a sectional view showing a nozzle according to the present invention.

도 8은 본 발명에 따른 노즐로 냉연강판을 세척하는 상태의 사시도.8 is a perspective view of a state of washing the cold rolled steel sheet with a nozzle according to the present invention.

※도면의 주요부분에 대한 부호의 설명※※ Explanation of symbols about main part of drawing ※

1 : 강판 7 : 노즐1: steel sheet 7: nozzle

30 : 몸체 31 : 체결부30: body 31: fastening portion

32 : 분사구32: nozzle

상기 목적을 달성하기 위한 본 발명의 자동차용 플랩도어 고정장치 에 대한 특징적인 기술적 구성을 설명하면 다음과 같다.Referring to the technical configuration of the flap door fixing device for automobiles of the present invention for achieving the above object is as follows.

본 발명은 강판에 세척수를 분사하는 노즐을 형성함에 있어서, 상기 노즐의상부에는 체결부가 마련되고 그 체결부의 하부에는 원추형의 몸체가 마련되고 그 원추형의 몸체 둘레면에는 나선형태의 분사구가 하부에 이르도록 형성된 것을 특징으로 한다.According to the present invention, in forming a nozzle for spraying washing water on a steel plate, a fastening part is provided on an upper part of the nozzle, a conical body is provided on a lower part of the fastening part, and a spiral jet hole reaches a lower part of the conical body circumferential surface. Characterized in that formed.

이와 같은 특징을 갖는 본 발명을 나타낸 첨부도면을 참조하여 상세히 설명하면 다음과 같다.When described in detail with reference to the accompanying drawings showing the present invention having such features as follows.

도 6은 본 발명에 따른 노즐을 나타낸 사시도이고, 도 7은 본 발명에 따른 노즐을 나타낸 단면도이다.6 is a perspective view showing a nozzle according to the present invention, Figure 7 is a cross-sectional view showing a nozzle according to the present invention.

여기에서 참조되는 바와 같이 본 발명은 노즐(7)의 상부에 냉각수가 공급되는 공급관에 연결하기 위하여 둘레면에 나사산이 마련된 체결부(31)가 마련되고 그 체결부(31)의 하부에는 원추형의 몸체(30)가 마련된다.As referred to herein, the present invention provides a fastening portion 31 provided with a screw thread on a circumferential surface thereof to connect to a supply pipe through which cooling water is supplied to an upper portion of the nozzle 7, and a conical shape is provided below the fastening portion 31. The body 30 is provided.

상기 원추형 몸체(30)의 둘레면에는 나선형태의 분사구(32)가 하부에 이르도록 형성되어 있고 상기 원추형 몸체(10)의 외측 둘레면에는 분사구(32)를 통해서 분사되는 세척수가 일정한 각으로 분사될 수 있도록 유도하는 유도홈(33)이 상기 분사구(32)를 따라서 나선방향으로 형성되어 있다.The circumferential surface of the conical body 30 is formed so that the spiral injection hole 32 reaches to the bottom, and the outer circumferential surface of the conical body 10 is sprayed at a constant angle the washing water sprayed through the injection hole 32 Guide grooves 33 for inducing to be formed are formed in the spiral direction along the injection hole 32.

따라서 상기 노즐(7)을 세척조에 설치하여 세척수를 분사시키면 상기 노즐(7)의 내부에서 와류가 발생되어 세척수에 포함된 이물질이 세척수와 함께 배출되어 노즐(7)의 막힘현상이 방지되는 것이다.Therefore, when the nozzle 7 is installed in the washing tank and sprays the washing water, vortices are generated inside the nozzle 7 so that foreign substances contained in the washing water are discharged together with the washing water, thereby preventing the clogging of the nozzle 7.

그리고 세척수는 몸체(30)의 상부에서 하부에 이르도록 나선방향으로 형성된 분사구(32)를 통하여 분사되어 세척수가 균일하게 분사되는 넓은 분사각이 유지되며 상기 강판(1)의 표면으로 공급되는 세척수는 중심으로부터 외측에 이르도록 전체면에 대하여 세척수가 균일하게 분사됨돠 함께 강판(1)의 표면는 외측으로 향하는 와류가 발생하여 넓게 퍼지면서 강판(1)표면의 세척효율을 향상시켜 상기 강판(1)의 전체면을 균일하게 세척하게 되는 것이다.And the washing water is sprayed through the injection hole 32 formed in the spiral direction from the upper portion to the lower portion of the body 30 to maintain a wide spray angle in which the washing water is uniformly sprayed and the washing water supplied to the surface of the steel sheet (1) The washing water is uniformly sprayed on the entire surface from the center to the outside. In addition, the surface of the steel sheet 1 spreads widely due to the vortex toward the outside, thereby improving the cleaning efficiency of the surface of the steel sheet 1, It is to wash the entire surface evenly.

이상과 같은 본 발명은 노즐의 하부측 몸체에 나선방향으로 형성된 분사구를 통하여 분사되는 세척수가 강판의 표면에 균일하게 분사됨과 함께 상기 강판의 표면에서 와류가 발생하게 되어 상기 강판의 표면에 묻어있는 산세액을 세척하는 세척효율이 향상되므로 세척불량에 의한 2차 산화반응을 미연에 방지하는 특유의 효과가 있다.According to the present invention as described above, the washing water sprayed through the spiral hole formed in the lower body of the nozzle is uniformly sprayed on the surface of the steel sheet and the vortices are generated on the surface of the steel sheet so that acid is deposited on the surface of the steel sheet. Since the washing efficiency of washing the washing solution is improved, there is a peculiar effect of preventing the secondary oxidation reaction due to poor washing.

Claims (1)

강판(1)에 세척수를 분사하는 노즐(7)을 형성함에 있어서, 상기 노즐의 상부에는 체결부(31)가 마련되고 그 체결부의 하부에는 원추형의 몸체(30)가 마련되고 그 원추형의 몸체 둘레면에는 나선형태의 분사구(32)가 하부에 이르도록 형성된 것을 특징으로 하는 냉연강판 표면결함 방지용 나선형 노즐.In forming the nozzle (7) for spraying the washing water on the steel sheet (1), a fastening portion 31 is provided at the upper portion of the nozzle, a conical body 30 is provided at the lower portion of the fastening portion and the circumference of the conical body Spiral nozzle for preventing the surface defects of the cold rolled steel sheet, characterized in that formed on the surface so that the injection hole 32 of the spiral.
KR1020000053253A 2000-09-08 2000-09-08 Screw Type Nozzle for Cold Rolled steel sheet Surface defect Prevention KR20020020112A (en)

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Publication number Priority date Publication date Assignee Title
KR100980485B1 (en) * 2008-12-30 2010-09-07 김석민 a nozzle assembly using examine for escape of air-conditioner gas
KR101319234B1 (en) * 2010-03-09 2013-10-16 주식회사 엘지화학 Process for preparing polybutadiene latex
KR101371104B1 (en) * 2013-02-14 2014-03-07 현대브릿지(주) Apparatus for heating and scattering ascon adhesive agent
CN104107767A (en) * 2014-06-05 2014-10-22 中冶建筑研究总院有限公司 Spiral nozzle used in controlled rolling and controlled cooling technology and spiral type water feeding method
KR20200068194A (en) * 2018-12-05 2020-06-15 삼성전자주식회사 Nozzle and dishwasher including the same
KR20200121566A (en) * 2019-04-16 2020-10-26 주식회사 효진엔지니어링 Spray nozzle for scrubber for waste gas cleaning
CN111940519A (en) * 2019-05-16 2020-11-17 辽宁前杜实业发展集团有限公司 Multistage cooling system of steel rolling production line
KR102292541B1 (en) * 2020-09-11 2021-08-23 최행숙 Ultrafine dust adsorption device
KR20220049280A (en) * 2020-10-14 2022-04-21 주식회사 효진엔지니어링 Scrubber for cleaning waste gas equipped with magnetic spray nozzle and Magnetic spray nozzle for scrubber for waste gas cleaning

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KR960007315U (en) * 1994-08-27 1996-03-13 Feed container with adjustable feed force
JPH0957155A (en) * 1995-08-28 1997-03-04 Daido Steel Co Ltd Cooling spray nozzle
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JPS60238177A (en) * 1984-05-11 1985-11-27 Inax Corp Coating nozzle and apparatus thereof
JPH01203064A (en) * 1988-02-05 1989-08-15 Arai Tekkosho:Kk Conical nozzle
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100980485B1 (en) * 2008-12-30 2010-09-07 김석민 a nozzle assembly using examine for escape of air-conditioner gas
KR101319234B1 (en) * 2010-03-09 2013-10-16 주식회사 엘지화학 Process for preparing polybutadiene latex
KR101371104B1 (en) * 2013-02-14 2014-03-07 현대브릿지(주) Apparatus for heating and scattering ascon adhesive agent
CN104107767A (en) * 2014-06-05 2014-10-22 中冶建筑研究总院有限公司 Spiral nozzle used in controlled rolling and controlled cooling technology and spiral type water feeding method
CN104107767B (en) * 2014-06-05 2015-11-04 中冶建筑研究总院有限公司 A kind of for the spiral nozzle in cooling controlling and rolling controlling process
KR20200068194A (en) * 2018-12-05 2020-06-15 삼성전자주식회사 Nozzle and dishwasher including the same
EP3860418A4 (en) * 2018-12-05 2021-12-01 Samsung Electronics Co., Ltd. Nozzle and dishwasher including the same
US11324383B2 (en) 2018-12-05 2022-05-10 Samsung Electronics Co., Ltd. Nozzle and dishwasher including the same
KR20200121566A (en) * 2019-04-16 2020-10-26 주식회사 효진엔지니어링 Spray nozzle for scrubber for waste gas cleaning
CN111940519A (en) * 2019-05-16 2020-11-17 辽宁前杜实业发展集团有限公司 Multistage cooling system of steel rolling production line
KR102292541B1 (en) * 2020-09-11 2021-08-23 최행숙 Ultrafine dust adsorption device
KR20220049280A (en) * 2020-10-14 2022-04-21 주식회사 효진엔지니어링 Scrubber for cleaning waste gas equipped with magnetic spray nozzle and Magnetic spray nozzle for scrubber for waste gas cleaning

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