KR100347664B1 - Producing method for outer skin of melting alloy by duplicate gilding - Google Patents

Producing method for outer skin of melting alloy by duplicate gilding Download PDF

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KR100347664B1
KR100347664B1 KR1020000016023A KR20000016023A KR100347664B1 KR 100347664 B1 KR100347664 B1 KR 100347664B1 KR 1020000016023 A KR1020000016023 A KR 1020000016023A KR 20000016023 A KR20000016023 A KR 20000016023A KR 100347664 B1 KR100347664 B1 KR 100347664B1
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South Korea
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plating
zinc
aluminum
molten
molten alloy
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KR1020000016023A
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Korean (ko)
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KR20010093425A (en
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한종만
권택규
정지웅
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대우조선해양 주식회사
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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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C18/00—Alloys based on zinc
    • C22C18/04—Alloys based on zinc with aluminium as the next major constituent
    • 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
    • C23C2/30—Fluxes or coverings on molten baths

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Coating With Molten Metal (AREA)

Abstract

본 발명은 이중도금에 관한 것으로서, 특히 도금시마다 플럭스(flux)를 다시사용하지 않아도 되는 이중도금에 의한 용융합금 도금피막 제조방법에 관한 것이며, 용융합금 피막을 제조방법에 있어서, 도금시키고자 하는 철을 탈지 산세 수세 공정을 거쳐 아연 도금을 위한 플럭스를 도포한 후 용융아연도금 과정을 거친 후, 용융합금 도금조를 두어 원하는 함량의 용융 알루미늄을 전 과정에서 도금된 아연과 용융 합금 도금시킨후 수세를 하여 알루미늄의 함량에 따른 별도의 플럭스와 설비가 필요없이 용융합금 도금을 하는 것을 특징으로 하는 이중 도금에 의한 용융합금 피막 제조방법.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to double plating, and more particularly, to a method of manufacturing a molten alloy coating film by double plating, in which a flux does not need to be used again during plating. In the manufacturing method, an iron to be plated is used. After applying the flux for zinc plating through degreasing pickling and washing process, hot dip galvanizing process is carried out, and then a molten alloy plating bath is used to plate the molten aluminum having a desired content with the plated zinc and molten alloy in the whole process. Method for producing a molten alloy film by double plating characterized in that the molten alloy plating without the need for a separate flux and equipment according to the aluminum content.

Description

이중 도금에 의한 용융합금 피막 제조방법{Producing method for outer skin of melting alloy by duplicate gilding}Producing method for outer skin of melting alloy by duplicate gilding}

본 발명은 이중도금에 관한 것으로서, 특히 도금시마다 플럭스(flux)를 다시사용하지 않아도 되는 다중도금에 의한 용융합금 도금피막 제조방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to double plating, and more particularly, to a method for manufacturing a molten alloy plating film by multi-plating, in which a flux is not required every time plating.

보통 도금중 아연도금, 아연과 5% 알루미늄 도금, 아연과 55% 알루미늄 도금, 알루미늄 도금을 많이 실시하는데, 최근에는 내식성을 증가시키기 위하여 알루미늄 함량을 늘이는 경향이 있다.In general, galvanizing, zinc and 5% aluminum plating, zinc and 55% aluminum plating, and aluminum plating are frequently performed. Recently, there is a tendency to increase aluminum content to increase corrosion resistance.

종래에 합금 피막을 제조하는 공정은 도 1에 도시되어 있듯이 금속의 표면에 있는 기름을 제거하고자 하는 탈지공정을 거치고, 그리고 녹을 제거하는 산세공정을 거치고, 산세공정에서 묻은 산을 제거하는 수세공정을 거친다.Conventionally, the process of manufacturing the alloy film is subjected to a degreasing step to remove the oil on the surface of the metal as shown in FIG. Rough

이때 철위에 다른 금속을 합금할 때 철과 미도금 현상을 방지하기 위하여 플럭스(Flux)를 바르는데 이 플럭스는 위의 용융아연도금, 용융알루미늄도금, 용융합금도금에 각각 다른 종류를 사용하고, 다른 건조 설비를 사용하여 다른 생산라인에서 제품이 생산된다.In this case, when alloying another metal on iron, flux is applied to prevent iron and unplating phenomenon. This flux uses different kinds of hot dip galvanizing, hot dip aluminum plating, and hot dip plating. The product is produced on another production line using a drying plant.

따라서 용융합금 도금에 있어서 많은 공정이 필요하게되고, 별도의 플럭스를 각각 준비하여야 하는 등 문제점이 있었다.Therefore, many processes are required in the plating of the molten alloy, and there are problems such as the need to prepare separate fluxes.

본 발명은 전술한 문제점을 해결하기 위하여 제안한 것으로서, 아연과 다른 금속의 녹는점의 차이를 이용하여 기존의 용융아연 도금라인의 후방에 합금 도금조를 추가하고, 용융아연도금이 끝난 후에 합금도금을 실시하여 별도의 합금 도금 설비가 불필요하게 하고자 하는 목적을 가지고 있다.The present invention has been proposed in order to solve the above problems, by using the difference between the melting point of zinc and other metals to add an alloy plating bath to the rear of the existing hot-dip galvanizing line, and after the hot-dip galvanizing the alloy plating It has a purpose to make a separate alloy plating installation unnecessary.

본 발명은 전술한 목적을 달성하기 위하여 용융합금 피막을 제조방법에 있어서, 도금시키고자 하는 철을 탈지 산세 수세 공정을 거쳐 아연 도금을 위한 플럭스를 도포한 후 용융아연도금 후, 용융합금 도금조를 두어 원하는 함량의 용융 알루미늄을 전 과정에서 도금된 아연과 용융 합금 도금시킨후 수세를 하여 알루미늄의 함량에 따른 별도의 플럭스와 설비가 필요없이 용융합금 도금을 하는 것을 특징으로 하는 이중 도금에 의한 용융합금 피막 제조방법을 제공한다.In order to achieve the above object, the present invention provides a molten alloy coating method, wherein the iron to be plated is subjected to a degreasing pickling and washing process to apply a flux for zinc plating, followed by hot dip galvanizing, and then a molten alloy plating bath. The molten alloy by double plating, characterized in that the molten aluminum of the desired content is plated with zinc and molten alloy plated in the whole process, followed by washing with water to perform hot-dip alloy plating without the need for a separate flux and equipment according to the aluminum content. It provides a film production method.

도 1은 기존의 용융 아연 도금 설비의 공정도.1 is a process diagram of a conventional hot dip galvanizing facility.

도 2는 본 발명의 용융합금 피막 제조방법을 나타낸 도면.2 is a view showing a molten alloy film production method of the present invention.

이하 첨부된 도면을 참조하여 본 발명의 구성을 상세히 설명하면 다음과 같다.Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.

탈지를 거쳐 산세, 수세후 플럭스를 바른후 융점이 420℃인 아연의 용융 아연도금을 460℃정도의 온도에서 한후 수세 공정을 거친다.After degreasing, pickling and washing with water, flux is applied and hot dip galvanizing of zinc with melting point of 420 ℃ is performed at a temperature of about 460 ℃ and then washed with water.

이상과 같은 공정은 통상의 용융아연 도금의 공정인바, 용융아연 도금된 상태에서 합금도금조를 설치하여 아연 - 5% 알루미늄, 아연 - 55% 알루미늄 합금도금을 할 경우에는 알루미늄의 용융점이 660℃로 아연보다 높으므로, 이미 철과 플럭스에 의하여 도금층이 형성된 아연의 상층이 아연과 알루미늄합금 용탕의 온도에 의하여 용융되어 아연 알루미늄 합금층이 형성된다. 따라서 첨가된 용융알루미늄의 농도에 따라 다양한 용융합금 피막이 형성된다.The above process is a process of ordinary hot dip galvanizing. When the alloy plating bath is installed in the hot dip galvanized state and the zinc-5% aluminum and zinc-55% aluminum alloy plating is applied, the melting point of aluminum is 660 ° C. Since it is higher than zinc, the upper layer of zinc, in which the plating layer is already formed by iron and flux, is melted by the temperature of the zinc and aluminum alloy molten metal to form a zinc aluminum alloy layer. Therefore, various molten alloy films are formed according to the concentration of molten aluminum added.

상기의 제조방법에 의한 합금 도금시 별도의 플럭스가 필요없으며 1개의 생산라인에서 용융 아연도금과 합금도금의 병행생산이 가능하며, 또한 현재 용융아연도금 설비를 운영하고 있는 공장이라면 합금도금조 하나만을 추가로 설치함으로서 상기 공정을 수행할 수 있다.No additional flux is required for alloy plating by the above manufacturing method, and it is possible to produce hot dip galvanizing and alloy plating in parallel in one production line.In addition, if the factory currently operates hot dip galvanizing facilities, only one alloy plating bath is used. The process can be carried out by additionally installing.

Claims (1)

용융합금 피막의 제조방법에 있어서, 도금시키고자 하는 철을 탈지 산세 수세 공정을 거쳐 아연 도금을 위한 플럭스를 도포한 후 용융아연도금 과정을 거친 후, 용융합금 도금조를 두어 아연-5% 알루미늄과 아연 55% 알루미늄의 용융 알루미늄을 전 과정에서 도금된 아연과 용융 합금 도금시킨후 탕세를 하여 알루미늄의 함량에 따른 별도의 플럭스와 설비가 필요없이 용융합금 도금을 하는 것을 특징으로 하는 이중 도금에 의한 용융합금 피막 제조방법.In the method of manufacturing a molten alloy film, the iron to be plated is subjected to a degreasing pickling and washing process to apply a flux for zinc plating, followed by a hot dip galvanizing process, and then a zinc alloy bath with zinc-5% aluminum Molten by double plating, characterized in that molten aluminum of zinc 55% aluminum is plated with molten alloy plated with zinc in the whole process and then hot-dipped to perform molten alloy plating without the need for a separate flux and equipment according to the aluminum content. Alloy coating method.
KR1020000016023A 2000-03-29 2000-03-29 Producing method for outer skin of melting alloy by duplicate gilding KR100347664B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100436597B1 (en) * 2002-06-27 2004-06-16 덕산산업주식회사 Method for plating with molten aluminum

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100436597B1 (en) * 2002-06-27 2004-06-16 덕산산업주식회사 Method for plating with molten aluminum

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