KR960000868Y1 - Cooling device of continuous hot-dipping tester - Google Patents
Cooling device of continuous hot-dipping tester Download PDFInfo
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- KR960000868Y1 KR960000868Y1 KR2019930015204U KR930015204U KR960000868Y1 KR 960000868 Y1 KR960000868 Y1 KR 960000868Y1 KR 2019930015204 U KR2019930015204 U KR 2019930015204U KR 930015204 U KR930015204 U KR 930015204U KR 960000868 Y1 KR960000868 Y1 KR 960000868Y1
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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
- C23C2/26—After-treatment
- C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
- C23C2/29—Cooling or quenching
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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
- C23C2/0032—Apparatus specially adapted for batch coating of substrate
- C23C2/00322—Details of mechanisms for immersing or removing substrate from molten liquid bath, e.g. basket or lifting mechanism
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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
- C23C2/04—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
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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
Abstract
내용 없음.No content.
Description
제 1 도는 본 고안의 냉각장치가 장착된 연속용융도금 실험기의 전체 구성도,1 is an overall configuration diagram of a continuous melt plating tester equipped with a cooling device of the present invention,
제 2 도는 본 고안의 냉각장치 구조를 상세히 도시한 일부절개 단면도,2 is a partial cutaway cross-sectional view showing in detail the structure of the cooling device of the present invention,
제 3 도는 본 고안과 종래 기술에 따른 냉각속도 차이를 도시한 비교 그래프도이다.3 is a comparison graph showing the difference in cooling rate according to the present invention and the prior art.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 냉각장치 10 : 몸체부1: cooling device 10: body
11a, 11b : 내,외벽 15 : 단열재11a, 11b: inner and outer walls 15: insulation
20 : 오-링(O-Ring) 22 : 자동 밸브20: O-Ring 22: automatic valve
25 : 액체질소유입구 27 : 기화 가스 출구25 liquid nitrogen inlet 27: vaporization gas outlet
28 : 지지대 35 : 냉각 가스 유입구28: support 35: cooling gas inlet
37 : 도관 39 : 방열관37: conduit 39: heat dissipation tube
40 : 냉각 가스 출구 45 : 유체 온도계40: cooling gas outlet 45: fluid thermometer
100 : 용융도금실험기 111 : 냉각대100: hot dip plating experiment 111: cooling table
112 : 가열로 113 : 에어 나이프112: furnace 113: air knife
150 : 냉각 가스 공급 장치 200 : 액체질소 저장탱크150: cooling gas supply device 200: liquid nitrogen storage tank
본 고안은 연속용융도금 공정의 모사 실험을 수행할 수 있는 연속용융도금 모사 실험기(이하 "용융도금실험기"라고 함)에 관한 것으로, 보다 상세히는 냉각 속도 조정을 용이하게 실시하여 용융아연도금 강판의 모사실험시, 소재 강판의 합금층 생성 방지 및, 도금층의 합금화 속도 조절이 용이한 연속용융도금 실험기의 냉각장치에 관한 것이다.The present invention relates to a continuous melt plating simulation tester (hereinafter referred to as "melt plating tester") that can perform a simulation experiment of the continuous hot-dip plating process, more specifically, to easily adjust the cooling rate of the hot-dip galvanized steel sheet The present invention relates to a cooling apparatus of a continuous hot dip plating tester, which is capable of preventing the formation of an alloy layer of a raw material steel sheet and controlling the alloying speed of a plating layer during simulation.
일반적으로 연속용융도금 공정에서 소재 강판은 환원 분위기의 열처리로를 통과하여 소둔 열처리가 된 후, 용융아연욕조를 통과하면서 도금이 된다.In general, in the continuous hot dip plating process, the steel sheet is subjected to annealing heat treatment through a heat treatment furnace in a reducing atmosphere, and then plated while passing through a molten zinc bath.
강판은 도금 후에 수직 및 수평냉각대에서 공기를 이용 냉각되는데, 이때 냉각속도는 -15℃ -20℃/sec이다.The steel plate is cooled using air in vertical and horizontal cooling zones after plating, wherein the cooling rate is -15 ° C -20 ° C / sec.
그러나, 일반적으로 이러한 공정을 모사 실험하는 용융도금 실험기는 구조상 냉각매체로 공기를 사용할 경우 시편이 도금공정 전,후에서 산화되어 도금이 불가능한 문제점이 있다.However, in general, the molten plating tester that simulates the process has a problem in that when the air is used as a cooling medium, the specimen is oxidized before and after the plating process and plating is impossible.
따라서, 이에 대한 해결방안으로 냉각가스 매체를 공기 대신 고순도 질소 가스를 사용한다. 그러나, 공급되는 냉각용 질소가스는 가스공급장치를 통과하면서 온도가 20℃이상의 상온으로서 유지되고, 용융도금실험시(0.8t x 100 x 200mm)의 냉각속도는 최대 -10℃/sec로 측정되어 실제공정의 모사실험이 불가능하다.Therefore, as a solution to this, the cooling gas medium uses high purity nitrogen gas instead of air. However, the supplied cooling nitrogen gas is maintained at room temperature of 20 ° C or higher while passing through the gas supply device, and the cooling rate during the hot dip plating test (0.8tx 100 x 200mm) is measured at a maximum of -10 ° C / sec and is actually Simulation of the process is not possible.
또한 상기와 같은 서냉으로 인해 도금층과, 소지철 경계면에서 도금층의 아연과 소지철의 철성분이 확산반응을 하여 취약한 합금층이 생성되어 가공시 도금박리가 발생하는 문제점이 있고, 합금화 용융도금 모사 실험시에는 합금화 처리후 급냉에 의해 철과 아연의 합금화 반응을 조절하여야 하나, 느린 냉각속도로 인해 철성분과 아연의 합금반응이 지속되어 과합금화 현상 및 도금층의 분상 박리를 일으키는 문제가 발생하였다.In addition, due to the slow cooling as described above, there is a problem in that the plating layer and the iron component of the plated layer at the interface between the base iron and the iron component of the plated layer react with each other to produce a vulnerable alloy layer. During the alloying process, the alloying reaction of iron and zinc should be controlled by quenching, but due to the slow cooling rate, the alloying reaction of iron and zinc was continued, causing problems of overalloying and separation of the plating layer.
본 고안은 상기와 같은 종래의 문제점을 해소하기 위하여 안출된 것으로서, 냉각가스 매체에 의한 시험편의 냉각속도를 빠르게 하여 실제의 연속용융도금 공정에서의 작업조건을 정확하게 모사할 수 있는 연속용융도금실험기의 냉각장치를 제공함에 그 목적이 있다.The present invention was devised to solve the conventional problems as described above, and the continuous molten plating tester which can accurately simulate the working conditions in the actual continuous molten plating process by increasing the cooling rate of the test piece by the cooling gas medium. The purpose is to provide a cooling device.
상기 목적을 달성하기 위하여 본 고안은 용융도금실험기와 냉각가스 공급장치에서 티타늄계 방열판을 사용한 열교환 방식의 냉각장치를 설치하고, 액체질소를 이용하여 시편 냉각용 질소가스를 냉각한 후, 용융도금실험기의 냉각대에 공급할 수 있는 연속용융도금실험기의 냉각장치를 마련함에 의한다.In order to achieve the above object, the present invention provides a heat exchange type cooling device using a titanium heat sink in a hot dip plating tester and a cooling gas supply device, and cools nitrogen gas for specimen cooling using liquid nitrogen, followed by a hot dip plating tester. By providing a cooling device of the continuous molten plating experiment that can be supplied to the cooling table of the.
이하, 본 고안을 도면에 따라서 보다 상세히 설명한다.Hereinafter, the present invention will be described in more detail with reference to the drawings.
제 1 도에는 본 고안에 따른 냉각장치(1)가 장착된 용융도금실험기(100)의 전체구성도이다.1 is an overall configuration diagram of a hot dip plating tester 100 equipped with a cooling device 1 according to the present invention.
상기 용융도금실험기(100)에는 냉각가스공급장치(150) 및 액체 질소 저장탱크(200)가 냉각장치(1)를 통해 연결된다.The hot dip galvanizing apparatus 100 is connected to the cooling gas supply device 150 and the liquid nitrogen storage tank 200 through the cooling device (1).
먼저 용융도금실험기(100)의 구성 및 작용효과를 설명한다. 상기 용융도금 실험기(100)는 시편의 용융아연도금 후 질소 가스에 의해 시편이 냉각되는 냉각대(111), 열처리 및 합금화 열처리를 위한 적외선 가열로(112), 도금 두께 조절을 위한 에어나이프(113), 용융아연을 담고 있는 아연욕조(114), 그리고 시편이송을 위한 시편이송막대(115)로 구성되어 있다.First, the configuration and working effects of the hot dip plating tester 100 will be described. The hot dip galvanizing apparatus 100 is a cooling stage 111 for cooling the specimen by nitrogen gas after hot dip galvanizing of the specimen, an infrared heating furnace 112 for heat treatment and alloying heat treatment, air knife 113 for adjusting the thickness of the plating. ), A zinc bath (114) containing molten zinc, and a specimen transfer rod (115) for specimen transfer.
그리고 부속장치로서 실험에 필요한 가스를 공급하는 가스공급장치(150)가 있는데 이 장치는 실험시 시편의 산화를 막기 위해 수소와 질소의 혼합가스를 자동공급하고, 도금두께 조절을 위한 에어와이핑(air wiping)용 및 시편의 냉각을 위한 질소가스를 자동공급한다.In addition, there is a gas supply device 150 for supplying the gas required for the experiment as an accessory device, which automatically supplies a mixed gas of hydrogen and nitrogen to prevent the oxidation of the specimen during the experiment, and air wiping for the plating thickness control ( Automatic supply of nitrogen gas for air wiping) and cooling of specimens.
용융 도금모사실험은 먼저 표면청정된 시편을 냉각대(111)를 통하여 용융도금실험기(100)의 시편이송막대(115)에 고정한다. 이후 용융도금실험기(100)의 내부는 산화방지를 위해 진공상태로 유지되고 그후 가스공급장치(150)에서 공급되는 질소와 수소의 혼합가스에 의해 환원성 분위기를 유지하게 된다. 이후 시편은 적외선 가열로(112)에서 용융도금전에 적절한 온도로 가열된 후 아연욕조(114)에 담겨 도금이 된다. 도금된 시편은 에어나이프(113)를 통과하면서 적정도금두께로 조정되고 최종적으로 냉각대(111)에서 냉각용 질소가스에 의해 상온까지 냉각된다. 그리고 합금화 용융도금 모사실험시에는 에어나이프(113)를 통과후 적외선 가열로(112)에서 합금화를 위한 도금층의 열처리가 이루어지고, 그후 냉각대(111)에서 역시 냉각용 질소가스에 의해 상온까지 냉각된다.In the hot dip simulation, first, the surface-cleaned specimen is fixed to the specimen transfer rod 115 of the molten plating test apparatus 100 through the cooling rod 111. After that, the inside of the hot dip galvanizing apparatus 100 is maintained in a vacuum state to prevent oxidation, and then maintains a reducing atmosphere by a mixed gas of nitrogen and hydrogen supplied from the gas supply device 150. Thereafter, the specimen is heated to an appropriate temperature before hot dip plating in the infrared heating furnace 112 and then plated in a zinc bath 114. The plated specimen is adjusted to an appropriate plating thickness while passing through the air knife 113 and finally cooled to room temperature by the nitrogen gas for cooling in the cooling zone 111. In the alloyed molten plating simulation test, the heat treatment of the plating layer for alloying is performed in the infrared heating furnace 112 after passing through the air knife 113, and then the cooling zone 111 is cooled to room temperature by using nitrogen gas for cooling. do.
본 고안의 냉각장치(1)는 가스공급장치(150)와 용융도금실험기(100)의 냉각대(111)사이에 설치되어 시편 냉각용 질소가스를 냉각시키게 된다. 이때 액체질소는 액체질소탱크(200)에 의해 공급되어진다.The cooling device 1 of the present invention is installed between the gas supply device 150 and the cooling stand 111 of the hot dip plating tester 100 to cool the nitrogen gas for specimen cooling. At this time, the liquid nitrogen is supplied by the liquid nitrogen tank (200).
제 2 도에서 본 고안의 냉각장치(1)가 도시되어 있다.In FIG. 2 a cooling device 1 of the present invention is shown.
상기 냉각장치(1)는 원통형으로 이루어진 2중의 내,외벽(11a)(11b)과 전,후판(13a)(13a')(13b)(13b')으로 내부공간(S)을 형성하는 몸체부(10)를 갖춘다.The cooling device 1 is a body part which forms an inner space S with a double inner and outer walls 11a and 11b formed of a cylindrical shape and front and rear plates 13a, 13a ', 13b and 13b'. Equipped with 10.
상기 내,외벽(11a)(11b) 사이 및 전후판(13a)(13a')(13b)(13b') 사이에는 단열재(15)가 일정두께로 삽입되며, 내,외벽(11a)(11b)의 양측 모서리에는 각각 플랜지(16a)(16b)가 형성되어 전,후판(13a)(13a')(13b)(13b')의 플랜지(18a)(18b)와 다수개의 보울트(19)와 너트로 연결되며, 상기 플랜지 사이의 접촉면에는 오-링(O-Ring)(20)이 삽입되어 기밀을 유지시키게 된다. 또한, 상기 내,외벽(11a)(11b)의 일측으로는 자동밸브(22)를 갖춘 액체 질소유입구(25)가 형성되고, 타측으로는 기화가스 출구(27)가 형성되며, 상기 플랜지(16a)(16b)를 내부에서 길이방향으로 가로지르는 지지대(28)를 다수개 갖춘다.Insulation material 15 is inserted at a predetermined thickness between the inner and outer walls 11a and 11b and between the front and rear plates 13a, 13a ', 13b and 13b', and the inner and outer walls 11a and 11b. Flange (16a) and (16b) are formed at both edges of each of the front and rear plates (13a) (13a ') (13b) and (13b') flanges (18a) (18b) and a plurality of bolts (19) and nuts. The O-ring 20 is inserted into a contact surface between the flanges to maintain airtightness. In addition, a liquid nitrogen inlet 25 having an automatic valve 22 is formed at one side of the inner and outer walls 11a and 11b, and a vaporized gas outlet 27 is formed at the other side of the flange 16a. ), There are a plurality of supports 28 which traverse longitudinally from the inside 16b).
그리고, 상기 내,외벽(11a)(11b)의 하부에는 드레인 밸브(Drain Valve)(30)가 형성되고, 받침대(32a)(32b)에 의해서 바닥으로부터 일정높이로 지지된다.A drain valve 30 is formed below the inner and outer walls 11a and 11b and is supported by the pedestals 32a and 32b at a predetermined height from the bottom.
그리고, 상기 내부공간(S)으로는 전판(13a)(13a')의 상부측을 관통하여 냉각가스 입구(35)가 진입하고, 이는 튜브형의 스파이럴(spiral) 방식으로 절곡된 도관(37)이 연장되어 일측의 플랜지(16a)로부터 타측의 플랜지(16b)까지 차례로 다수회 왕복 연장하며, 전판(13a)(13a')의 하부측에 형성된 냉각가스출구(40)에 연결되어 냉각가스의 유로(流路)를 형성하는 것이다.In addition, the inner space S passes through the upper sides of the front plates 13a and 13a 'and enters the cooling gas inlet 35, which is a conduit 37 bent in a tubular spiral manner. It extends and reciprocates a number of times from one flange 16a to the other flange 16b in turn, and is connected to a cooling gas outlet 40 formed at the lower side of the front plates 13a and 13a 'to connect the cooling gas flow path ( To form a road.
또한, 상기 도관(37)의 중간부분에는 다수개의 티타늄계 방열판(39)이 부착되어 도관(37)의 외측을 흐르는 액체질소와 도관(37)의 내측을 흐르는 냉각가스와의 열교환이 보다 용이하게 이루어지도록 구성되는 것이다.In addition, a plurality of titanium-based heat sinks 39 are attached to the middle portion of the conduit 37 to facilitate heat exchange between the liquid nitrogen flowing outside the conduit 37 and the cooling gas flowing inside the conduit 37. It is configured to be made.
미설명 부호(45)는 유체온도계이며, 냉각가스의 출구온도를 검지하여 제어기(Controller)(미도시)를 통하여 자동밸브(22)의 개도(開度)를 조절시킨다.Reference numeral 45 is a fluid thermometer, and detects the outlet temperature of the cooling gas to adjust the opening degree of the automatic valve 22 through a controller (not shown).
상기와 같이 구성된 본 고안의 냉각장치(1)는 가스공급장치(150)로부터 냉각가스가 냉각가스입구(35)를 통하여 몸체부의 내부공간(S)에 위치한 도관(37)으로 유입되고, 플랜지(16a)와 플랜지(16b) 사이를 다수회 왕복하도록 연장되는 도관(37) 내부를 흘러서 냉각가스출구(40)로 배출된다.The cooling device 1 of the present invention configured as described above has a cooling gas from the gas supply device 150 flowing into the conduit 37 located in the inner space S of the body part through the cooling gas inlet 35, and the flange ( It flows into the cooling gas outlet 40 through the inside of the conduit 37 which extends reciprocating many times between 16a) and the flange 16b.
한편, 액체질소유입구(25)에서는 상기 액체질소 저장탱크(200)로부터 액체질소가 유입되어 몸체부(10)의 내부공간(S)으로 충진되고, 기체화된 질소가스는 기화가스출구(27)를 통하여 별도의 장소에 수집처리된다.On the other hand, the liquid nitrogen inlet 25 is filled with liquid nitrogen from the liquid nitrogen storage tank 200 is filled into the internal space (S) of the body portion 10, the gasified nitrogen gas vaporized gas outlet (27) Collected in a separate place through.
따라서 도관(37)의 내측을 통과하는 냉각가스 도관(37) 외측의 액체질소와, 도관(37) 및 방열판(39)을 통하여 열교환되어 최종냉각가스 출구(40)의 냉각가스 배출온도가 -50℃이하로 유출된다.Therefore, the liquid nitrogen outside the cooling gas conduit 37 passing through the inside of the conduit 37 and heat exchanged through the conduit 37 and the heat sink 39, so that the cooling gas discharge temperature of the final cooling gas outlet 40 is -50. Outflow is below
이때, 유체온도계(45)에서 검지된 냉각가스온도에 따라서 미도시된 제어기(Controller)가 자동밸브(22)의 개도(開度)를 자동으로 조절하여 액체질소 유입구(25)를 통한 액체질소의 유량을 조절하고, 그에 따른 냉각가스의 배출온도를 일정하게 조절하도록 작동된다.At this time, the controller (not shown) automatically adjusts the opening degree of the automatic valve 22 according to the cooling gas temperature detected by the fluid thermometer 45 to provide the liquid nitrogen through the liquid nitrogen inlet 25. It is operated to adjust the flow rate, and accordingly regulate the discharge temperature of the cooling gas.
상기 냉각가스출구(40)를 -50℃ 정도로 유지하면서 배출된 냉각가스는 용융도금실험기(100)의 냉각대(111) 내부로 유입되어 신속히 시편을 냉각시키게 되는 것이다.The cooling gas discharged while maintaining the cooling gas outlet 40 at about -50 ° C is introduced into the cooling zone 111 of the hot dip plating tester 100 to rapidly cool the specimen.
제 3 도에는 본 고안에 따라 개발된 냉각장치(1)를 이용하여 표준시편(0.8t x 100 x 200mm)을 냉각한 결과를 종래기술과 비교 도시하고 있다.3 shows the result of cooling the standard specimen (0.8t x 100 x 200mm) using the cooling device 1 developed according to the present invention compared with the prior art.
종래 기술에 따르면 시편의 냉각속도가 최대 -10℃/sec로 나타나고 있으나, 본 고안의 냉각장치(1)를 이용하는 경우 냉각속도는 -20℃/sec로 향상되었음을 알 수 있었다.According to the prior art, the cooling rate of the specimen is shown as a maximum of -10 ℃ / sec, it can be seen that the cooling rate is improved to -20 ℃ / sec when using the cooling device (1) of the present invention.
상기에서와 같이 본 고안에 의하면, 열교환 방식의 냉각장치(1)가 포함된 용융도금실험기(100)를 이용하여 연속용융도금공정의 정확한 모사실험을 실행하고, 또한 용융도금실험시 합금층 생성에 의한 도금 박리를 방지하는 실용상의 효과를 얻는 것이다.According to the present invention as described above, using the molten plating tester 100 including the heat exchange type cooling device 1 to perform an accurate simulation test of the continuous molten plating process, and also to produce an alloy layer during the melt plating test Practical effect of preventing plating peeling by this is obtained.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019930015204U KR960000868Y1 (en) | 1993-08-09 | 1993-08-09 | Cooling device of continuous hot-dipping tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019930015204U KR960000868Y1 (en) | 1993-08-09 | 1993-08-09 | Cooling device of continuous hot-dipping tester |
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| Publication Number | Publication Date |
|---|---|
| KR950006395U KR950006395U (en) | 1995-03-20 |
| KR960000868Y1 true KR960000868Y1 (en) | 1996-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019930015204U KR960000868Y1 (en) | 1993-08-09 | 1993-08-09 | Cooling device of continuous hot-dipping tester |
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| KR (1) | KR960000868Y1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101711856B1 (en) * | 2015-12-24 | 2017-03-03 | 주식회사 포스코 | Continuous galvanizing apparatus and method |
| WO2017111530A1 (en) * | 2015-12-24 | 2017-06-29 | 주식회사 포스코 | Plated steel sheet having fine and even plating structure and plated steel sheet manufacturing method |
| KR20200025897A (en) * | 2018-08-31 | 2020-03-10 | 주식회사 포스코 | Hot-dip galvanized steel sheet having excellent corrosion resistance and workability and method for manufacturing thereof |
-
1993
- 1993-08-09 KR KR2019930015204U patent/KR960000868Y1/en not_active IP Right Cessation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101711856B1 (en) * | 2015-12-24 | 2017-03-03 | 주식회사 포스코 | Continuous galvanizing apparatus and method |
| WO2017111523A1 (en) * | 2015-12-24 | 2017-06-29 | 주식회사 포스코 | Plating device and plating method |
| WO2017111530A1 (en) * | 2015-12-24 | 2017-06-29 | 주식회사 포스코 | Plated steel sheet having fine and even plating structure and plated steel sheet manufacturing method |
| KR20200025897A (en) * | 2018-08-31 | 2020-03-10 | 주식회사 포스코 | Hot-dip galvanized steel sheet having excellent corrosion resistance and workability and method for manufacturing thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR950006395U (en) | 1995-03-20 |
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