KR20130100680A - Method of manufacturing vehicle body part employing color pre-coated metal sheet - Google Patents

Method of manufacturing vehicle body part employing color pre-coated metal sheet Download PDF

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KR20130100680A
KR20130100680A KR1020130008768A KR20130008768A KR20130100680A KR 20130100680 A KR20130100680 A KR 20130100680A KR 1020130008768 A KR1020130008768 A KR 1020130008768A KR 20130008768 A KR20130008768 A KR 20130008768A KR 20130100680 A KR20130100680 A KR 20130100680A
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South Korea
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color steel
steel sheet
coating
coating color
body part
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KR1020130008768A
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Korean (ko)
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KR101447708B1 (en
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원광우
김대근
서종덕
임창용
조재동
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주식회사 신영
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
    • B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/36—Phosphatising
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/34—Pretreatment of metallic surfaces to be electroplated
    • C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D9/00—Electrolytic coating other than with metals
    • C25D9/02—Electrolytic coating other than with metals with organic materials

Abstract

PURPOSE: A car body component manufacturing method applying a pre-coating color steel sheet is provided to minimize environmental contamination and to skip a hardening and a cooling process before or after a middle-coating process and a top-coating process. CONSTITUTION: A car body component manufacturing method applying a pre-coating color steel sheet comprises the following steps. A pre-coating color steel sheet is prepared by painting a specific color to a steel sheet in advance (S110). The prepared pre-coating color steel sheet is processed to be a car body component with a predetermined shape (S120). The processed pre-coating color steel sheet is dipped into a paint liquid which contains an electroplating composition, and applied with electro-deposition coating by using an electroplating composition which is obtained by flowing electricity into the liquid (S130). The processed pre-coating color steel sheet goes through a phosphate treatment before the step of electroplating. [Reference numerals] (AA) Start; (BB) End; (S110) Step of preparing a pre-coating color steel sheet; (S120) Step of processing the prepared pre-coating color steel sheet to be a car body component with a predetermined shape; (S130) Step of applying an electro-deposition coating to the processed pre-coating color steel sheet

Description

선도장 컬러 강판을 적용한 차체부품 제조방법{Method of manufacturing vehicle body part employing color pre-coated metal sheet}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method for manufacturing a body part employing a lead color steel sheet,

본 발명은 선도장 컬러 강판을 적용해서 차체부품을 제조하는 방법에 관한 것이다. The present invention relates to a method of manufacturing a vehicle body part by applying a lead color steel plate.

차체부품의 외면에는 특정 컬러로 도장처리가 되는 것이 일반적이다. 이러한 도장처리에 의해 차량의 외관이 미려하게 될 수 있을 뿐만 아니라, 외부의 이물질 또는 수분으로부터 금속재질로 이루어진 차량을 보호할 수 있다.It is general that the outer surface of the body part is painted with a specific color. This painting process not only makes the appearance of the vehicle look good, but also protects the vehicle made of a metal material from foreign substances or moisture.

일반적인 차체부품을 제조하는 과정은 다음과 같이 이루어진다. 먼저, 강 등으로 이루어진 판재를 사용해서 차체부품의 형상에 맞게 성형하고 가공한다. 차체부품이 이너 부품과 아우터 부품으로 구성되는 경우, 가공된 이너 부품과 아우터 부품을 결합한다. 다음으로, 부식 방지를 위한 전착도장공정, 컬러 도장을 위한 중도 도장공정, 광택 및 코팅을 위한 상도 도장공정을 거쳐 차체부품을 도장처리한다. The process of manufacturing a typical body part is as follows. First, a plate made of steel or the like is used to mold and process the shape according to the shape of the body part. When the body part is composed of the inner part and the outer part, the processed inner part and the outer part are combined. Next, the body parts are painted through the electrodeposition coating process for preventing corrosion, the intermediate coating process for color coating, the top coating process for polishing and coating.

그런데, 중도 도장공정, 상도 도장공정 중 슬러지 세정용제 등이 사용되고, 도장공정 후 휘발성 유기화합물(VOC), 오폐수 등이 발생되는데, 이러한 물질들은 환경 오염을 유발시키는 물질이다. 최근에는 환경오염에 대한 관심이 높아지면서 제조 과정에서 발생되는 오염물질에 대한 규제도 강화되고 있다. 따라서, 차체부품의 제조과정에서 전술한 오염물질을 절감시킬 수 있는 방안이 필요하다. 또한, 차체부품에 대한 각 도장공정의 전후에 경화 및 쿨링 공정을 거치게 되는데, 고온의 경화공정으로 인해 많은 에너지가 소모되기도 한다. However, sludge cleaning solvents are used during the intermediate coating process and the top coating process, and volatile organic compounds (VOC), wastewater, etc. are generated after the coating process. These materials are substances causing environmental pollution. Recently, as the concern about environmental pollution increases, regulations on pollutants generated in the manufacturing process are being strengthened. Accordingly, there is a need for a method for reducing the above-mentioned pollutants in the process of manufacturing a vehicle body part. In addition, curing and cooling processes are carried out before and after each coating process on the body parts, and a large amount of energy is consumed due to the high temperature curing process.

본 발명의 과제는 친환경적으로 차체부품을 제조할 수 있는 선도장 컬러 강판을 적용한 차체부품 제조방법을 제공함에 있다. The object of the present invention is to provide a method of manufacturing a vehicle body part to which a lead color steel plate capable of manufacturing vehicle parts in an environmentally friendly manner is applied.

상기의 과제를 달성하기 위한 본 발명에 따른 선도장 컬러 강판을 적용한 차체부품 제조방법은, 특성 컬러로 미리 도장해서 선도장 컬러 강판을 마련하는 단계; 상기 마련된 선도장 컬러 강판을 설정 형상의 차체부품으로 가공하는 단계; 및 상기 가공된 선도장 컬러 강판을 전착 성분을 함유한 도료 용액에 침적시킨 후 통전함에 따라 석출된 전착 성분으로, 상기 가공된 선도장 컬러 강판을 전착 도장하는 단계;를 포함한다.According to an aspect of the present invention, there is provided a method for manufacturing a body part using a lead-length color steel sheet according to the present invention, the method comprising: preparing a lead-length color steel sheet by painting in advance with a characteristic color; Machining the prepared long color steel plate into a body part of a predetermined shape; And electrodepositing the processed long color steel plate with the electrodeposited component precipitated by immersing the processed long color steel plate in a coating solution containing an electrodeposition component and electrifying the electrodeposited component.

본 발명에 따르면, 선도장 컬러 강판을 적용하여 차체부품을 제조하게 되면, 종래의 컬러 도장을 위한 중도 도장공정, 광택 및 코팅을 위한 상도 도장공정을 생략할 수 있다. 따라서, 중도 도장공정, 상도 도장공정에서 발생되는 휘발성 유기화합물(VOC), 오폐수 등을 배제할 수 있으므로, 환경 오염을 최소화할 수 있다. 또한, 중도 도장공정, 상도 도장공정 전후에 경화 및 쿨링 공정을 생략할 수 있으므로, 에너지를 절감하는 효과가 있을 수 있다. According to the present invention, when a body part is manufactured by using a lead color steel plate, the intermediate painting process for the conventional color painting, and the top painting process for polishing and coating can be omitted. Therefore, volatile organic compounds (VOC), wastewater, and the like generated in the intermediate coating process and the upper coating process can be excluded, thereby minimizing environmental pollution. Further, since the curing and cooling processes can be omitted before and after the intermediate coating process and the top coating process, the energy saving effect can be obtained.

도 1은 본 발명의 일 실시예에 따른 선도장 컬러 강판을 적용한 차체부품 제조방법에 대한 순서도이다.1 is a flowchart of a method of manufacturing a vehicle body part using a leading long color steel plate according to an embodiment of the present invention.

이하 첨부된 도면을 참조하여, 바람직한 실시예에 따른 본 발명을 상세히 설명하기로 한다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 일 실시예에 따른 선도장 컬러 강판을 적용한 차체부품 제조방법에 대한 순서도이다.1 is a flowchart of a method of manufacturing a vehicle body part using a leading long color steel plate according to an embodiment of the present invention.

먼저, 특성 컬러로 미리 도장해서 선도장 컬러 강판을 마련한다(S110). 이때, 강판에 대한 도장은 롤 코팅 방식이 이용될 수 있다. 롤 코팅 방식은 강판을 이동시키면서 저장조에 담긴 도장 코팅액을 롤들에 의해 끌어 올려 적절한 두께로 코팅하는 방식이다. First, the lead color steel sheet is prepared by painting in a characteristic color in advance (S110). At this time, a roll coating method may be used for coating the steel sheet. In the roll coating method, a paint coating solution contained in a storage tank is lifted up by rolls while coating a steel sheet with a suitable thickness.

선도장 컬러 강판은 특정 컬러의 도료가 강판에 미리 도장된 상태이므로, 추후에 별도의 도장 공정, 즉 컬러 도장을 위한 중도 도장공정, 광택 및 코팅을 위한 상도 도장공정이 필요하지 않게 된다. 또한, 선도장 컬러 강판은 내후성, 내식성, 고가공성이 일반적인 강판보다 우수할 뿐만 아니라, 단일 색상 또는 다양한 패턴이 형성되어 있으므로 외관이 미려한 장점을 지닐 수 있다.Since the lead color steel sheet is in a state in which the paint of a specific color is previously coated on the steel sheet, a separate painting process, that is, a middle painting process for color painting, and a top coating process for polishing and coating are not required in the future. In addition, the leading edge color steel sheet is superior in weatherability, corrosion resistance, and high porosity to ordinary steel sheets, and can have a merit of being beautiful in appearance because a single color or various patterns are formed.

이어서, 마련된 선도장 컬러 강판을 설정 형상의 차체부품으로 가공한다(S120). 예를 들어, 차체부품은 차량의 앞측의 엔진실을 보호하는 후드(Hood), 차량의 측면 도어(Side Door), 차량의 후면에 결합된 테일 게이트(Tail Gate), 트렁크 리드(Trunk Lid) 등일 수 있다. 차체부품이 이너 부품과 아우터 부품으로 구성되는 경우, 선도장 컬러 강판으로 프레스 등에 의해 이너 부품과 아우터 부품으로 각각 스템핑, 커팅되어 성형된 후, 볼트와 너트 결합을 위한 체결 홀이 가공될 수 있다. Then, the prepared long color steel plate is processed into a body component of a set shape (S120). For example, the body part may include a hood for protecting the engine room on the front side of the vehicle, a side door for the vehicle, a tail gate coupled to the rear of the vehicle, a trunk lid, . When the body part is composed of the inner part and the outer part, the inner part and the outer part are stamped and cut, respectively, with a lead color steel plate by a press or the like, and then a fastening hole for bolt and nut can be formed .

이어서, 가공된 선도장 컬러 강판을 전착 성분을 함유한 도료 용액에 침적시킨 후 통전함에 따라 석출된 전착 성분으로, 가공된 선도장 컬러 강판을 전착 도장한다(S130). Next, the processed long color steel sheet is electrodeposited with the electrodeposited component deposited by electrification after immersing the processed long color steel sheet in a coating solution containing an electrodeposition component (S130).

전착 도장은 다음과 같이 이루어질 수 있다. 도료조의 도료 용액에 가공된 선도장 컬러 강판을 담그고, 가공된 선도장 컬러 강판을 양극, 도료조를 음극으로 하여 직류 전류를 흘리면, 양이온 입자는 음극인 도료조로, 음이온 입자는 양극인 가공된 선도장 컬러 강판으로 이동한다. 음이온 입자는 전착 성분으로 이루어지므로, 가공된 선도장 컬러 강판의 표면에 전착 성분으로 도장을 형성할 수 있다. Electrodeposition painting can be done as follows. When a direct current is caused to flow through a processed lead colored steel sheet as a positive electrode and a paint tank as a negative electrode, the anion particles are treated as a coating tank, which is a negative electrode, Move to the long color steel plate. Since the anionic particles are made of an electrodeposited component, it is possible to form a coating with an electrodeposited component on the surface of the processed long color steel plate.

이때, 가공된 선도장 컬러 강판에서 선도장이 된 부분에는 전착 성분으로 도장되지 않고, 가공 후 만들어진 컷 엣지부, 볼트 및 너트 결합부 등과 같이 선도장되지 않은 부분에 전착 성분으로 도장될 수 있다. 따라서, 가공 후 만들어진 컷 엣지부, 볼트 및 너트 결합부 등의 부식이 방지될 수 있다. 전착 도료로는 수성 도료를 사용할 수 있는데, 그에 따라 안전성이 높고, 휘발성 유기화합물(VOC)도 적게 들 수 있다. 전착 공정을 거친 선도장 컬러 강판에 대해서는 소부(bake) 처리해서 가열 건조시킬 수 있다. At this time, it is not coated with the electrodeposition component in the part where the lead color sheet is processed, and it can be coated with the electrodeposited component in the non-lead-in part such as cut edge part, bolt and nut part part made after processing. Therefore, corrosion of cut edge portions, bolt and nut joint portions and the like, which are made after machining, can be prevented. As the electrodeposition coating, an aqueous coating material can be used, and thus safety is high and volatile organic compounds (VOC) can be reduced. For lead colored steel plates subjected to an electrodeposition process, they can be baked and heated and dried.

전술한 바와 같이, 선도장 컬러 강판을 적용하여 차체부품을 제조하게 되면, 종래의 컬러 도장을 위한 중도 도장공정, 광택 및 코팅을 위한 상도 도장공정을 생략할 수 있다. 따라서, 중도 도장공정, 상도 도장공정에서 발생되는 휘발성 유기화합물(VOC), 오폐수 등을 배제할 수 있으므로, 환경 오염을 최소화할 수 있다. 또한, 중도 도장공정, 상도 도장공정 전후에 경화 및 쿨링 공정을 생략할 수 있으므로, 에너지를 절감할 수도 있다. As described above, when a vehicle body part is manufactured by using a lead color steel plate, the intermediate painting process for the conventional color coating, the top coating process for gloss and coating can be omitted. Therefore, volatile organic compounds (VOC), wastewater, and the like generated in the intermediate coating process and the upper coating process can be excluded, thereby minimizing environmental pollution. In addition, energy can be saved since the curing and cooling steps can be omitted before and after the intermediate coating step and the top coating step.

한편, 전착 도장하는 단계의 이전에는, 가공된 선도장 컬러 강판에 대해 인산염 처리를 하는 단계를 더 수행할 수도 있다. 인산염 처리는 강판 등과 같은 금속을 묽은 인산과 화학적으로 반응시켜 금속의 표면을 난용성의 결정질 인산염으로 만들어 금속의 고유 성질을 바꾸는 것이다. On the other hand, prior to the electrodeposition coating step, a step of performing a phosphate treatment on the processed leading long color steel sheet may be further performed. Phosphate treatment involves chemically reacting a metal such as a steel sheet with dilute phosphoric acid to make the surface of the metal an insoluble crystalline phosphate to change the intrinsic properties of the metal.

가공된 선도장 컬러 강판에서 가공 후 미도장된 컷 엣지부, 볼트 및 너트 결합부 등에 인산염 처리됨으로써, 추후 미도장된 부분에 수행되는 전착 도장시 전착 성분과의 접착성이 높아질 수 있고, 미도장 부분의 표면에 내부식성, 내마멸성이 향상될 수 있다.In the processed long color steel sheet, after being subjected to the phosphate treatment on the cut edge portion, the bolt and the nut joint portion not yet painted after the processing, the adhesion with the electrodeposition component can be enhanced in the electrodeposition coating performed on the uncoated portion, Corrosion resistance and abrasion resistance on the surface of the part can be improved.

인산염 처리 과정은 가공된 선도장 컬러 강판의 표면을 세정하는 과정과, 세정된 선도장 컬러 강판의 표면에 인산염 피막을 형성하는 과정, 및 인산염 피막이 형성된 선도장 컬러 강판을 다시 세정하는 과정을 포함할 수 있다. The phosphate treatment process includes a process of cleaning the surface of the processed long color steel plate, a process of forming a phosphate film on the surface of the cleaned long color steel plate, and a process of re-cleaning the lead color plate having the phosphate coating .

본 발명은 첨부된 도면에 도시된 일 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 당해 기술분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 수 있을 것이다. 따라서, 본 발명의 진정한 보호 범위는 첨부된 청구 범위에 의해서만 정해져야 할 것이다. While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation and that those skilled in the art will recognize that various modifications and equivalent arrangements may be made therein. It will be possible. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

Claims (2)

특성 컬러로 미리 도장해서 선도장 컬러 강판을 마련하는 단계;
상기 마련된 선도장 컬러 강판을 설정 형상의 차체부품으로 가공하는 단계; 및
상기 가공된 선도장 컬러 강판을 전착 성분을 함유한 도료 용액에 침적시킨 후 통전함에 따라 석출된 전착 성분으로, 상기 가공된 선도장 컬러 강판을 전착 도장하는 단계;
를 포함하는 선도장 컬러 강판을 적용한 차체부품 제조방법.Prepainting with a characteristic color to prepare a lead-like color steel sheet;
Machining the prepared long color steel plate into a body part of a predetermined shape; And
Electrodeposition coating the processed lead-length color steel sheet with the electrodeposition component deposited by depositing the processed lead-length color steel sheet in a coating solution containing an electrodeposition component and then energizing it;
Wherein the front long color steel plate is used as the front part color steel plate. 제1항에 있어서,
상기 전착 도장하는 단계의 이전에는,
상기 가공된 선도장 컬러 강판에 대해 인산염 처리하는 단계를 더 포함하는 것을 특징으로 하는 선도장 컬러 강판을 적용한 차체부품 제조방법.The method of claim 1,
Before the electrodeposition coating step,
The method for manufacturing a body part to which the lead-length color steel sheet is applied, further comprising the step of phosphating the processed lead-length color steel sheet.
KR1020130008768A 2012-03-02 2013-01-25 Method of manufacturing vehicle body part employing color pre-coated metal sheet KR101447708B1 (en)

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