KR200182527Y1 - Cleaning device of the air lip at the zinc coaling regulator - Google Patents
Cleaning device of the air lip at the zinc coaling regulator Download PDFInfo
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- KR200182527Y1 KR200182527Y1 KR2019990029951U KR19990029951U KR200182527Y1 KR 200182527 Y1 KR200182527 Y1 KR 200182527Y1 KR 2019990029951 U KR2019990029951 U KR 2019990029951U KR 19990029951 U KR19990029951 U KR 19990029951U KR 200182527 Y1 KR200182527 Y1 KR 200182527Y1
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- main body
- injection port
- pinion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/06—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with a blast of gas or vapour
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
- C23C2/20—Strips; Plates
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
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- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
Abstract
본 고안은 압연된 스트립의 도금시 도금량을 조절하는 에어나이프의 공기분사구인 립이 이물질로 막히는 경우 자동으로 이물질을 제거시켜주는 도금량조절기의 자동 수입장치에 관한 것으로 그 구성은 압축공기가 유입되는 유입구(111)가 구비되며 전면에는 제1 공기분사구(112)가 구비되어 스트립에 폭방향으로 압축공기를 분사하며 공기유입구(111)와 제1 분사구(112)간에는 공기통로가 형성된 본체(110)와,The present invention relates to an automatic import device of a plating amount controller that automatically removes foreign substances when a lip, which is an air injector of an air knife that controls the plating amount of a rolled strip, is clogged with foreign substances. 111 is provided and the first air injection port 112 is provided on the front side to inject compressed air in the width direction to the strip and the air inlet 111 and the first injection port 112 between the main body 110 and the air passage formed; ,
상기 본체 상면에 결합되어 본체(110)와의 사이에 공간부(121)를 형성하며 단부는 본체에 구비된 제1 공기분사구(112) 상면을 덮으며 길게 형성되어 본체하부와 제2 공기분사구(122)를 형성하는 상측후레임(120)과,It is coupled to the upper surface of the main body to form a space portion 121 between the main body 110 and the end is formed long to cover the upper surface of the first air injection port 112 provided in the main body lower body and the second air injection port 122 Upper frame 120 to form a),
상기 공간부(121)내에 스라이딩되도록 결합되며 상면에는 기어(141)가 구비되고 일측은 본체에 탄성결합되어 있으며 타측은 블레드(143)가 구비된 택크(140)와,The tack 140 is coupled to slide in the space 121, the upper surface is provided with a gear 141, one side is elastically coupled to the body and the other side is provided with a tack 140,
상기 랙크에 결합되는 기어(151)가 외주면 일부에 형성되어 샤프트(152)로 연결결합된 피니언(150)과,A pinion 150 coupled to the rack and formed on a portion of an outer circumference thereof and coupled to the shaft 152;
상기 피니언 샤프트(152)에 결합되어 외측의 구동체(170)의 구동력을 전달받는 동력전달부(160)로 구성되어 제2 공기분사구(122)가 이물질로 막히는 경우 구동체(170)를 구동시켜 피니언(150)을 구동함으로써 피니언에 결합된 랙크(140)를 이동시켜 랙크(140)에 결합된 블레드(143)를 제2 공기분사구(122)로 이동시켜 이물질을 제거하는 도금량 조절기의 자동수입장치에 관한 것이다.It is coupled to the pinion shaft 152 is composed of a power transmission unit 160 receives the driving force of the outer drive body 170 to drive the drive body 170 when the second air injection hole 122 is blocked by foreign matter By driving the pinion 150, the rack 140 coupled to the pinion is moved to move the bleed 143 coupled to the rack 140 to the second air injection port 122 to automatically import the plating amount regulator to remove foreign substances. Relates to a device.
Description
본 고안은 도금량 조절기의 수입장치에 관한 것으로 상세하게는 압연공정이 완료된 스트립의 용융아연도금시 도금량을 조절하는 에어나이프의 립이 이물질로 막히는 경우 이물질을 제거시켜 주는 도금량 조절기의 자동수입장치에 관한 것이다.The present invention relates to an import device of a plating amount regulator, and more particularly, to an automatic import device of a plating amount regulator that removes a foreign substance when the lip of an air knife that controls the plating amount during hot dip galvanizing of a strip in which the rolling process is completed is clogged with a foreign substance. will be.
일반적으로 아연도금 스트립을 제조하는 공정은 제강로에서 제강된 용강을 연속주조기에서 주조하여 스라브를 제조하게 되며 제조된 스라브를 가열하여 열간압연을 행하고 열간압연이 완료된 스트립을 냉간압연을 행하여 두께와 차수를 맞추게 된다.In general, a process of manufacturing a galvanized strip is to produce slabs by casting molten steel produced in a steelmaking furnace in a continuous casting machine.The slabs are heated to be hot rolled, and the hot rolled strips are cold rolled to have a thickness and degree. Will be adjusted.
물론 냉간압연 공정중에는 냉간가공에 의한 가공스트레스를 줄여주기 위한 열처리공정이 행해지며 상기한 열처리공정에 의한 스트립 표면의 스케일제거를 위한 산세 작업이 병행되어 실시되게 된다.Of course, during the cold rolling process, a heat treatment process is performed to reduce the work stress caused by cold working, and the pickling operation for removing the scale of the strip surface by the heat treatment process is performed in parallel.
상술한 작업이 완료된 스트립은 아연도금을 행하게 되며 아연도금은 도 1에 도시된 바와 같이 도금조(10)에 스트립(S)을 통과시켜 스트립을 용융아연에 deepAfter the above-described operation is completed, the strip is subjected to zinc plating, and the zinc plating passes the strip S through the plating bath 10 as shown in FIG.
ing후 건조시키는 방법으로 이루어지며 이때 도금량의 도금두께를 조절하기 위한 수단으로 도금조(110)를 통과한 스트립(S)에 압축공기를 분사하여 주는 도금조절기It is made by drying after ing method and the plating controller spraying compressed air to the strip (S) passed through the plating tank 110 as a means for controlling the plating thickness of the plating amount
(100)가 구비된다.100 is provided.
도금두께의 조정은 도금조절기(20)로 분사되는 공기압력과 도금조절기와 스트립(S)의 간격에 의해 조정되어 응고되며 아연결정립이 성장됨으로써 아연고팅작업이 완료되게 된다.The adjustment of the plating thickness is coagulated by adjusting the air pressure injected into the plating controller 20 and the space between the plating controller and the strip (S), and the zinc crystals are grown, thereby completing the zinc coating operation.
그러나 상술한 종래 기술은 도금량을 조절하는 조절기(20)의 공기분사 압력이 크고 스트립(S)을 사이에 두고 양측에 구비된 조절기(20)간 거리가 근접되어 있However, in the above-described conventional technique, the air injection pressure of the regulator 20 for adjusting the plating amount is large, and the distance between the regulators 20 provided on both sides of the strip S is close to each other.
으며 전체적으로 용융아연과 조절기(20)가 근접된 상태에서 도금작업이 진행됨으로써 용융아연의 비산이 발생되었으며 특히 도금조(10)에 도금액 형성을 위해 아연 잉고트를 투입하는 과정에서 용융아연의 유동 및 비산이 발생되어 도금조절기(20)의 공기분사구(21)가 막히는 현상이 발생되어 공기분사구(21)가 막힌상태에서의 도금작업시 스트립표면에 줄마크를 유발시켜 제품불량의 원인이 되는 문제가 있었다.As the plating process is performed in a state where the molten zinc and the controller 20 are close to each other, the molten zinc is scattered. Particularly, the zinc zinc ingot is added to the plating bath 10 to form the plating solution. This caused a phenomenon in which the air injection port 21 of the plating controller 20 was clogged, causing a line mark on the surface of the strip during plating in the state where the air injection port 21 was blocked, causing a product defect. .
또한 도금량 조절기(20)하측의 공기분사구(21)에 비산된 아연용액이 도금조내로 드롭되며 아연용액을 비산시켜 스트립표면에 부착됨으로써 스트립표면 품질이 하락되는 문제가 있었다.In addition, there is a problem that the zinc surface scattered in the air injection port 21 below the plating amount regulator 20 is dropped into the plating bath and the zinc surface is scattered and attached to the surface of the strip, thereby degrading the surface quality of the strip.
따라서 상술한 문제를 해소하기 위한 방법으로 도 2에 도시된 바와 같이 막힌 공기분사구(21)에 작업자가 침(30)을 이용하여 공기분사구(21)를 수입하는 방법이 사용되었다.Therefore, as a method for solving the above-described problem, a method in which an operator imports the air jet port 21 using the needle 30 to the blocked air jet port 21 as shown in FIG. 2 was used.
그러나 상기 작업방법은 시간이 장시간 소요되며 상기 작업중 통과하는 스트립은 표면불량이 발생되어 스크랩 발생량이 증가되는 또 다른 문제가 있으며 스크랩 발생량을 줄이기 위한 목적으로 선,후행 코일의 용접부가 조절기를 통과하는 시기에 작업을 행하는 방법을 사용하나 원천적인 문제를 해결할 수 없었다.However, the work method takes a long time, and the strip passing during the work has another problem that the surface defects are generated and the amount of scraps is increased, and when the welds of the leading and trailing coils pass the regulator for the purpose of reducing the amount of scraps. I used a method to do the work, but I couldn't solve the underlying problem.
또한 상술한 수입작업에 의해 공기분사구(21)의 막힘이 해소되지 않는 경우에는 작업을 정지하고 사포등을 이용하여 막힘부위를 연마하여야 하는 문제가 발생되며, 공기분사구(21)인 립의 하부에서 아연드롭이 발생시에는 라인가동중 제거작업이 불가능하여 스트립 표면불량이 발생되는 문제가 상존하는 문제가 있었다.In addition, when the blockage of the air injection port 21 is not eliminated by the above-described import operation, a problem arises in that the operation is stopped and the blockage part is polished using sandpaper, etc., at the lower part of the lip that is the air injection port 21. When zinc drop occurs, there is a problem that strip surface defect occurs due to impossible removal during line operation.
따라서 본 고안이 이루고자 하는 기술적 과제는 상술한 문제점을 해소할 수 있도록 도금량 조절을 조절하는 공기분사구인 립에 막힘이 발생될때 분사구를 자동으로 용이하게 수입할 수 있는 도금량 조절기 수입장치를 제공함에 있다.Therefore, the technical problem to be achieved by the present invention is to provide a plating amount regulator import device that can easily import the injection port automatically when clogging occurs in the lip, which is an air injection port to adjust the plating amount adjustment to solve the above problems.
도 1은 스트립도금 공정을 도시한 개략도1 is a schematic diagram showing a strip plating process
도 2는 종래 도금량 조절기와 수동 수입기의 사시도2 is a perspective view of a conventional plating amount regulator and a manual importer
도 3은 본 고안이 구비된 도금량 조절기 사시도3 is a perspective view of the plating amount adjuster provided with the present invention
〔도면중 주요부호에 관한 설명〕[Description of Major Code in Drawing]
100 ... 도금조절기 110 ... 본체100 ... Plating regulator 110 ... Main body
111 ... 공기유입구 112 ... 제1 공기분사구111 ... air inlet 112 ... first air jet
120 ... 상측후레임 121 ... 공간부120 ... upper frame 121 ... space
122 ... 제2 공기분사구 123 ... 공기유입구122 ... second air inlet 123 ... air inlet
130 ... 가이드레일 140 ... 기어130 ... guide rail 140 ... gear
142 ... 스프링 143 ... 블레드142 ... Spring 143 ... Bled
150 ... 피니언 151 ... 기어150 ... pinion 151 ... gear
152 ... 샤프트 160 ... 체인152 ... shaft 160 ... chain
170 ... 구동모터170 ... drive motor
상술한 기술적 과제를 성취시키기 위한 구성은 측면에는 압축공기가 유입되는 압축공기유입구가 구비되어 있으며 전면에는 압축공기가 본사되는 제1 공기분사구가 구비되고 상기 공기유입구와 분사구간에는 공기통로가 형성된 본체와,In order to achieve the above technical problem, the side is provided with a compressed air inlet through which compressed air is introduced, and a first air injection port with compressed air headquarters is provided on the front side, and an air passage is formed in the air inlet and the injection section. ,
상기 본체 상면에 공간부를 형성하며 결합되어 단부는 본체에 구비된 제1 공기분사구 상면을 덮으며 길게 형성되어 본체하부와 제2 공기분사구를 형성하는 상측후레임과,An upper frame forming a space portion on the upper surface of the main body and having an end portion formed to cover an upper surface of the first air injection port provided in the main body to form a lower body and a second air injection port;
상기 상측후레임 상면을 관통하며 결합되며 관로상에 밸브가 구비된 압축공기유입부와,Compressed air inlet portion coupled to the upper frame through the upper surface and provided with a valve on the conduit,
본체상면과 상측후레임간에 형성된 공간부에 구비되어 공간부 바닥을 형성하는 본체상면에 고정되어 있는 가이드에 스라이딩되도록 결합되며 상면에는 기어가 구비되어 있으며 일측은 본체에 탄성결합되고 타측은 본체상면과 상측후레임 사이를 스라이딩 되는 블레드가 구비된 랙크와,It is provided in the space formed between the main body upper surface and the upper frame to be slid to the guide fixed to the main body surface forming the bottom of the space portion, the upper surface is provided with a gear, one side is elastically coupled to the main body and the other side is the upper body and Rack with blades sliding between the upper frame,
상기 랙크에 구비된 기어에 결합되는 기어가 외주면 일부에 연속형성되어 샤프트로 서로 연결된 피니언과,The pinion coupled to the gear provided in the rack is continuously formed on a part of the outer peripheral surface and connected to each other by a shaft,
상기 피니언의 샤프트에 결합되어 외측의 구동체의 구동력을 전달받는 동력전달부로 구성된다.Is coupled to the shaft of the pinion is composed of a power transmission unit for receiving the driving force of the outer drive body.
이하 일실시예에 의한 도면으로 상세히 설명하면 다음과 같다.Hereinafter, described in detail with reference to the embodiment as follows.
양측면에는 압축공기가 유입되는 압축공기유입구(111)가 구비되며 전면에는 길게형성된 제1 압축공기분사구(112)가 구비되어 스트립에 폭방향으로 압축공기를 분사하며 상기 공기유입구(111)와 분사구(112)간에는 공기통로가 형성된 본체와,Compressed air inlet 111 through which compressed air flows is provided on both sides, and a first compressed air injection hole 112 is formed on the front side to inject compressed air in the width direction to the strip, and the air inlet 111 and the injection hole ( 112 between the main body and the air passage formed,
상기 본체상면에 결합되어 상기 본체와의 사이에 공간부(121)를 형성시키며 단부는 본체(110)에 구비된 제1 공기분사구(112) 상면을 덮어주며 갭을 형성함과 아울러 길게형성되어 본체하부와의 사이에 제2 공기분사구(122)를 형성시켜주는 상측후레임(120)과,It is coupled to the upper surface of the main body to form a space portion 121 between the main body and the end portion covers the upper surface of the first air injection port 112 provided in the main body 110 and forms a gap and is formed long to the main body And the upper frame 120 to form a second air injection port 122 between the lower and,
상기 상측후레임 상면을 관통하며 결합되며 관로상에는 구동모터(170)와 동시동작되는 밸브가 구비되는 압축공기유입구(123)와,Compressed air inlet 123 is coupled to pass through the upper frame upper surface and provided with a valve that is synchronized with the drive motor 170 on the pipeline;
본체(110)상면과 상측후레임(120)간에 형성된 공간부(121) 바닥면인 본체상면에 제1 공기분사구(112)와 수직되게 양측에 나란히 결합된 가이드레일(130)과,A guide rail 130 coupled to both sides of the main body 110 vertically with the first air injection port 112 on the upper surface of the main body that is the bottom surface of the space 121 formed between the upper surface and the upper frame 120;
상기 가이드레일(130)에 스라이딩 이동되게 결합되며 상면에는 기어(141)가 구비되어 있고 일측은 공기유입구(111)가 구비된 본체에 스프링(142)으로 탄성결합되어 있으며 타측은 본체(110)상면과 상측후레임(120) 사이를 스라이딩 이동하는 블레드(143)가 구비된 랙크(140)와,The guide rail 130 is coupled to the sliding movement, the upper surface is provided with a gear 141, one side is elastically coupled to the body is provided with an air inlet 111 with a spring 142 and the other side the body 110 Rack 140 is provided with a blade 143 for sliding between the upper surface and the upper frame 120,
상기 랙크에 구비된 기어(141)에 결합되는 기어(151)가 외주면 일부에 연속적으로 형성되어 있으며 샤프트(152)로 서로 연결되어 있는 1쌍의 피니언기어(150)와,A pair of pinion gears 150 continuously connected to a part of the outer circumferential surface of the gear 151 coupled to the gear 141 provided in the rack and connected to each other by a shaft 152;
상측후레임(120)을 관통하며 외측으로 돌출된 피니언기어 샤프트(152)와 외측에 구비된 구동모타(170)간을 연결결합하며 동시 구동시켜주는 체인(160)으로 구성된다.It is composed of a chain 160 that connects and simultaneously drives the pinion gear shaft 152 that penetrates the upper frame 120 and protrudes outward and drives the motor 170 provided on the outside.
이하 작용에 관하여 서술하면 다음과 같다.The following describes the operation.
본 고안이 구비된 도금조절기를 장착하여 도금시 제2 공기분사구(123)가 막혀 공기분사구(122)의 수입이 필요한 경우 구동모터(170)를 정회전시켜 주면 구동모터(170)의 구동력은 체인(160)에 의해 피니언샤프트(152)를 회동시키며 샤프트(152)의 회동에 따라 피니언(150)도 회동되게 된다.When the plated regulator equipped with the present invention is plated, the second air injection hole 123 is blocked, and the import of the air injection hole 122 is required. When the driving motor 170 is rotated forward, the driving force of the drive motor 170 is a chain. The pinion shaft 152 is rotated by the 160 and the pinion 150 is also rotated in accordance with the rotation of the shaft 152.
피니언(150)의 회동에 따라 피니언기어에 치함된 랙크(140)는 공간부(121)내에 구비된 가이드레일(130)상을 이동하게 되며 랙크(140)의 이동에 따라 랙크(140)에 결합된 블레드(143)도 이동되어 본체(110)상면과 상부후레임(120)사이의 갭을 통해 상부후레임(120)과 본체하부간의 개구부인 제2 공기분사구(122)로 돌출되게 이동되어 개구부의 막힘을 개구시켜주게 된다.Rack 140 hit by the pinion gear in accordance with the rotation of the pinion 150 is moved on the guide rail 130 provided in the space portion 121 and coupled to the rack 140 in accordance with the movement of the rack 140. The bleed 143 is also moved to protrude to the second air injection hole 122 which is an opening between the upper frame 120 and the lower body through a gap between the upper surface of the main body 110 and the upper frame 120. It will open the blockage.
또한 상술한 과정중 피니언(150)이 일정각도이상 회동되면 피니언의 외주면에 기어(151)가 미형성된 부위가 랙크(140)부위에 설정되어 피니언(150)과 랙크(140)의 결합이 해제되게 되고 랙크(140)일측과 본체(110)간에 탄성결합된 스프링(143)의 복원력에 의해 랙크(140)는 역방향으로 이동되게 되어 랙크(140)에 결합된 블레드(143)도 제2 공기분사구(122)로부터 이탈되어 본체상측과 상측후레임(120)사이의 갭으로 이동되게 된다.In addition, when the pinion 150 is rotated more than a predetermined angle during the above-described process, a portion where the gear 151 is not formed on the outer circumferential surface of the pinion is set on the rack 140 so that the pinion 150 and the rack 140 are released. And the rack 140 is moved in the reverse direction by the restoring force of the spring 143 elastically coupled between the rack 140 one side and the main body 110, the bleed 143 coupled to the rack 140 is also a second air jet Departure from the 122 is moved to the gap between the upper body and the upper frame 120.
동시에 구동모타(170)와 동시 작동되는 밸브가 구비된 공기유입구(123)를 통해 공기가 공간부(121)로 유입되어 블레드(143)에 의해 미탈락된 이물질에 제2 공기분사구(122)로부터 탈락되게 되어 제2 공기분사구의 막힘현상은 개선되게 되는 것이다.At the same time, the air flows into the space 121 through the air inlet 123 having a valve that is simultaneously operated with the driving motor 170, and thus the second air injection port 122 is applied to the foreign matter not dropped by the bleed 143. As a result, the clogging phenomenon of the second air injection port is improved.
본 고안의 효과로는 공기를 분사시키는 공기분사구의 막힘으로 인하여 스트립표면에 발생되는 표면불량을 방지시키는 효과와 종래 공기분사구의 수입시 소요되는 시간을 단축함은 물론 수입미비로 인하여 발생되던 공정라인 정지를 최소화시켜 생산성 향상과 인정조업에 이바지하는 효과가 크다.The effect of the present invention is to prevent the surface defects generated on the surface of the strip due to the blockage of the air injector for injecting air, and to shorten the time required for importing the conventional air injector. The effect of minimizing downtime contributes to productivity improvement and accreditation.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019990029951U KR200182527Y1 (en) | 1999-12-28 | 1999-12-28 | Cleaning device of the air lip at the zinc coaling regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019990029951U KR200182527Y1 (en) | 1999-12-28 | 1999-12-28 | Cleaning device of the air lip at the zinc coaling regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR200182527Y1 true KR200182527Y1 (en) | 2000-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019990029951U Expired - Fee Related KR200182527Y1 (en) | 1999-12-28 | 1999-12-28 | Cleaning device of the air lip at the zinc coaling regulator |
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| Country | Link |
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| KR (1) | KR200182527Y1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100726916B1 (en) * | 2005-02-03 | 2007-06-11 | 가부시끼가이샤 도시바 | Semiconductor memory |
| KR100770199B1 (en) * | 2006-04-17 | 2007-10-25 | 주식회사 포스코 | Plating amount regulator automatic cleaning device |
-
1999
- 1999-12-28 KR KR2019990029951U patent/KR200182527Y1/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100726916B1 (en) * | 2005-02-03 | 2007-06-11 | 가부시끼가이샤 도시바 | Semiconductor memory |
| KR100770199B1 (en) * | 2006-04-17 | 2007-10-25 | 주식회사 포스코 | Plating amount regulator automatic cleaning device |
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