KR100202939B1 - Method of car painting - Google Patents
Method of car painting Download PDFInfo
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- KR100202939B1 KR100202939B1 KR1019960070850A KR19960070850A KR100202939B1 KR 100202939 B1 KR100202939 B1 KR 100202939B1 KR 1019960070850 A KR1019960070850 A KR 1019960070850A KR 19960070850 A KR19960070850 A KR 19960070850A KR 100202939 B1 KR100202939 B1 KR 100202939B1
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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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/02—Electrophoretic coating characterised by the process with inorganic material
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Wood Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Electrochemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
본 발명은 자동차 제조과정중의 도장방법에 관한 것으로, 예비세척단계(S112)와 탈지단계(S120), 세척단계(S130), 화성피막처리단계(S140), 재세척단계(S150)로 구성되는 표면처리단계(S100)를 거치는 자동차 도장방법에 있어서, 상기 예비세척단계(S112)가 수용성 바디세척제로 차체를 예비세척하는 것으로 이루어져, 종래의 유용성 바디세척제로 예비세척하는 것에 비해 작업장의 오염을 줄일 수 있고, 인산아연 피막성이 향상됨으로 인해 내식성이 높아지게 하는 것이다.The present invention relates to a coating method during the automobile manufacturing process, comprising a preliminary washing step (S112) and degreasing step (S120), washing step (S130), chemical conversion treatment step (S140), rewashing step (S150). In the automobile coating method that is subjected to the surface treatment step (S100), the pre-cleaning step (S112) consists of pre-washing the vehicle body with a water-soluble body cleaner, reducing the contamination of the workplace compared to pre-washing with a conventional oil-soluble body cleaner. It is possible to improve the corrosion resistance due to the improved zinc phosphate coating.
Description
본 발명은 자동차 제조과정중의 도장방법에 관한 것으로, 특히 도장공정의 초기단계인 표면처리단계에서의 예비세척(pre-cleaning)공정에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a painting method in a vehicle manufacturing process, and more particularly, to a pre-cleaning process in a surface treatment step which is an initial stage of a painting process.
일반적으로 자동차 도막은 직사광선, 비, 먼지, 기타 각종의 오염물질 등에 대하여 내구력이 있어야 하며, 움직이는 물체로서의 진동, 마찰 등의 대단한 가혹한 조건에 대하여 내성이 있어야 할 뿐 아니라 최초의 마감도장 당시의 미관이 최대한 그대로 유지되지 않으면 안된다는 고도의 성능이 요구되는 바, 자동차 도막은 색상 및 광택의 유지, 부착성의 유지, 내수성과 내약품성 등의 내후성이 우수하여야 하므로, 내식성을 갖게 하는 하도도막, 전체도막이 내구성을 향상시키는 중도도막, 외관을 부여하는 상도도막으로 구성된다.In general, automotive coatings must be durable against direct sunlight, rain, dust, and other contaminants, and must be resistant to the harshest conditions such as vibration and friction as moving objects. As high performance is required to be kept as it is, automotive coatings must have excellent weatherability such as maintaining color and gloss, maintaining adhesion, water resistance and chemical resistance, so that the undercoat and the entire coating that provide corrosion resistance are durable. It is comprised from the intermediate coat which improves, and the top coat which gives an external appearance.
이러한 자동차 도막을 형성하는 대표적인 자동차 도장공정은 제3도에 도시된 바와 같이, 하도도장 전단계인 표면처리단계(S100)와 표면처리한 차체에 프라이머로서 하도도장하는 전착도장단계(S200), 열경화성 전착도료를 160℃-170℃에서 25-35분정도 가열하여 경화하는 제1가열건조단계(S300), 하도도막을 평활하게 하는 공연마단계(S400), 중도도료로 정전도장하는 중도도장단계(S500), 중도도막을 130-140℃에서 20-30분정도 가열하는 제2가열건조단계(S600), 중도도막을 평활하게 하는 수연마단계(S700), 도장의 마지막 마무리단계인 상도도장단계(S800), 열경화성 상도도료를 140-150℃에서 약30분 정도 가열하여 경화하는 제3가열건조단계(S900) 및 마감상태의 이상유무를 체크하는 검사단계(S1000)로 구성된다.Representative automotive coating process for forming such automotive coating film is, as shown in Figure 3, the surface treatment step (S100) that is a pre-painting step and the electrodeposition coating step (S200), which is a primer coating on the surface-treated car body, thermosetting electrodeposition First heating and drying step (S300) for curing the coating by heating the paint at 160 ° C-170 ° C for about 25-35 minutes, performing performance step for smoothing the undercoat (S400), and intermediate coating step for electrostatic coating with intermediate paint (S500). ), The second heating drying step (S600) for heating the intermediate coating film at 130-140 ° C. for 20-30 minutes, the water polishing step (S700) for smoothing the intermediate coating film, and the top coating step (S800) which is the final finishing step of the coating. ), And the third heat drying step (S900) of curing the heat-curable top coating at 140-150 ℃ for about 30 minutes to cure and the inspection step (S1000) to check for abnormalities of the finished state.
이중 상기 표면처리단계(S100)는 제4도에 도시된 바와 같이, 판금공정이 끝난 차체(white body)의 녹제거공정인 제청단계(S110)와 오일 등의 오염제거를 위한 탈지단계(S120), 탈지제의 제거를 위한 세척단계(S130), 하도도료와의 부착을 좋게하고 강판면에서의 녹발생을 방지하기 위한 화성피막처리단계(S140) 및 화성피막처리제의 제거를 위한 재세척단계(S150)로 구성된다.The surface treatment step (S100) is a degreasing step (S120) and the decontamination step (S120) for the decontamination step (S110), which is a rust removal process of the white body of the sheet metal process (white body) as shown in FIG. , Washing step (S130) for removing the degreasing agent, the chemical film treatment step (S140) to improve the adhesion to the bottom coating and prevent the occurrence of rust on the steel sheet surface and re-cleaning step (S150) for removal of the chemical film treatment agent It is composed of
최근 상기 제청단계(S110)는 겨울이나 장마철의 일부를 제외하고는 거의 녹제거 작업이 필요치 않게 되어 유용성 바디 세척제로 세척하는 차체 예비세척단계로 대체되고 있다.Recently, the decontamination step (S110) has been replaced by a preliminary washing step of washing the body with an oil-soluble body cleaner almost no need to remove the rust except for a part of the winter or rainy season.
그러나, 이때 사용되는 상기 유용성 바디 세척제는 강한 자극성 냄새로 인해 작업환경을 오염시키고, 주요 폐기물 발생원인이 되어 왔다.However, the oil-soluble body cleaners used at this time contaminate the working environment due to a strong irritant smell, and has been a major source of waste generation.
또한, 유용성 바디 세척제로 예비세척하고, 상기 탈지단계(S120), 세척단계(S130), 화성피막처리단계(S140)를 거쳐 형성된 화성피막인 인산철 피막 또는 인산아연 피막이 조밀하게 형성되지 못해 차체 내식성에 좋지않은 영향을 준다는 문제점이 있었다.In addition, pre-washing with an oil-soluble body cleaner, the iron phosphate coating or zinc phosphate coating formed by the degreasing step (S120), washing step (S130), chemical conversion treatment step (S140) is not densely formed body corrosion resistance There was a problem that has a bad effect on.
이에 본 발명은 상기한 문제점을 해결하기 위한 것으로, 오물 제거 능력이 뛰어나면서 냄새가 없고, 간단한 폐수처리공정으로 하수처리할 수 있으며, 특히 화성피막처리후 피막조밀도를 향상시켜 차체 내식성 향상에 큰 효과를 나타낼 수 있는 바디세척제로 화이트바디를 예비세척하는 방법을 제공함에 그 목적이 있다.Accordingly, the present invention is to solve the above problems, excellent in the dirt removal ability, no smell, can be treated sewage by a simple wastewater treatment process, in particular to improve the film density after the chemical coating treatment to improve the body corrosion resistance The purpose of the present invention is to provide a method of pre-cleaning the white body as a body cleaner that can be effective.
상기한 목적을 이루기 위한 본 발명의 자동차 도장방법은, 예비세척단계(S112)와 탈지단계(S120), 세척단계(S130), 화성피막처리단계(S140), 재세척단계(S150)로 구성되는 표면처리단계(S100)로 시작하는 자동차 도장방법에 있어서,Car coating method of the present invention for achieving the above object, pre-washing step (S112) and degreasing step (S120), washing step (S130), chemical film treatment step (S140), re-washing step (S150) In the car painting method starting with the surface treatment step (S100),
상기 예비세척단계(S112)가, 수용성 바디세척제로 예비세척하는 것을 특징으로 하는 것을 특징으로 한다.The pre-washing step (S112), characterized in that the pre-washing with a water-soluble body cleaner.
상기 수용성 바디세척제는 종래의 유용성 바디세척제가 갖는 유독한 냄새를 갖지 않고, 세척효과는 종래의 유용성 바디세척제에 떨어지지 않으며, 특히 수용성 바디세척제로 세척하여 표면 인산아연피막을 형성하였을 때 이 피막의 조밀도가 향상되어 내식성이 우수해진다.The water-soluble body cleaner does not have the toxic odor of the conventional oil-soluble body cleaner, and the washing effect does not fall on the conventional oil-soluble body cleaner, and especially when the surface zinc phosphate coating is formed by washing with a water-soluble body cleaner, The degree is improved and the corrosion resistance is excellent.
제1도는 본 발명의 실시예에 따라 차체 표면처리단계의 세부공정도.1 is a detailed process diagram of the vehicle body surface treatment step according to an embodiment of the present invention.
제2a도는 종래 유용성 바디세척제로 예비세척한 뒤 형성된 인산아연피막의 확대도.Figure 2a is an enlarged view of the zinc phosphate coating formed after pre-washing with a conventional oil-soluble body cleaner.
제2b도는 본 발명의 수용성 바디세척제로 예비세척한 뒤 형성된 인산아연피막의 확대도.Figure 2b is an enlarged view of the zinc phosphate coating formed after pre-washing with a water-soluble body cleaner of the present invention.
제3도는 종래 자동차 도장 공정도.3 is a conventional automobile coating process.
제4도는 종래 표면 처리 단계의 세부 공정도이다.4 is a detailed process diagram of a conventional surface treatment step.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 피막 크리스탈10: film crystal
이하 본 발명의 실시예를 첨부된 도면을 참조하여 상세하게 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
본 실시예는 표면처리단계의 세부공정을 제1도에 도시한 바와 같이, 두 개의 차체로서 예비세척단계(S112)와 탈지단계(S120), 세척단계(S130), 화성피막처리단계(S140) 및 재세척단계(S150)를 거치는 실험을 하였다.As shown in FIG. 1, the detailed process of the surface treatment step is a preliminary washing step (S112), a degreasing step (S120), a washing step (S130), and a chemical conversion coating step (S140) as two vehicle bodies. And re-washing step (S150) was carried out through the experiment.
상기 예비세척단계(S112)에서 하나의 차체에는 종래의 유용성 바디세척제중의 하나인 J-SHOP 200을 사용하여 예비세척하였고, 다른 차체에는 본 발명의 수용성 세척제로서 CJ-13B를 사용하여 예비세척하였다.In the pre-cleaning step (S112), one car body was pre-washed using J-SHOP 200, which is one of the conventional oil-soluble body cleaners, and the other car body was pre-washed using CJ-13B as the water-soluble cleaner of the present invention. .
상기 CJ-13B는 물을 용제로 하여 부톡시에탄올(Butoxyehtanol)과 펜타소디움트리포스페이트(Pentasodium Triphosphate), 소디움 메타실리케이트 펜타하이드레이트(Sodium Metasilicate Pentahydrate)을 주성분으로 하는 pH가 12 내지 13인 조성물이다.The CJ-13B is a composition having a pH of 12 to 13 based on butoxyethanol (Butoxyehtanol), pentasodium triphosphate, sodium metasilicate pentahydrate (Sodium Metasilicate Pentahydrate) using water as a solvent.
예비세척후 탈지하고 인산아연피막을 형성하여 이들 차체 각각에 여러 테스트 항목을 실험하여 이 결과를 하기 표 1에 나타내었다.After pre-washing, degreasing and forming a zinc phosphate coating to test a number of test items in each of these car bodies are shown in Table 1 below.
본 실시예에 따른 인산아연 피막을 1000배 확대한 에스이엠(SEM) 사진을 제2a도, 제2b도에 나타내었는 바, 피막형성 입자(10)의 사이즈가 줄어들어 매우 조밀하게 피막이 형성되어 있음을 알 수 있다.As shown in FIGS. 2A and 2B of the zinc phosphate coating 1000 times enlarged according to the present embodiment, the size of the film-forming particles 10 is reduced, indicating that the coating is very dense. Able to know.
상기한 표 1에서 세척성은 기름과 오물을 차체에 묻혀 붓으로 세척하였을 때의 결과이고, 매직 자국 제거성은 매직표시를 역시 붓으로 세척한 결과이며, 상온 방치 녹발생성 항목은 상기 세척제를 도포하여 상온에 방치한 결과이고, 인산아연 피막성 항목은 인산아연 피막을 형성하는 크리스탈(10)의 길이를 나타낸 수치이다.In the above Table 1, the washability is the result of washing oil and dirt on the car body by brushing, and the removal of magic marks is the result of washing the magic mark with a brush as well. The zinc phosphate coating item is a numerical value representing the length of the crystal 10 forming the zinc phosphate coating.
따라서, 상기한 표 1에 나타난 바와 같이 수용성 바디세척제인 CJ- 13B는 세척성면에서 유용성 바디세척제인 J-SHOP 200보다 뛰어나고, 유독한 솔벤트냄새가 나지않는 점에서 유리하며, 특히 피막성이 현저히 높아져 내식성이 2배이상 증가하게 된다.Therefore, as shown in Table 1 above, the water-soluble body cleaner CJ-13B is superior to the oil-soluble body cleaner J-SHOP 200 in terms of washability, and is advantageous in that it does not emit toxic solvent smell, and in particular, the coating property is significantly increased. Corrosion resistance is more than doubled.
차체를 도장전 수용성 바디세척제로 예비세척하여 탈지 후, 인산아연 피막을 형성하게 되면 종래의 유용성 바디세척제로 예비세척하는 것에 비해 작업장의 오염을 줄일 수 있고, 인산아연 피막성이 향상됨으로 인해 내식성이 높아지게 된다.If the car body is pre-washed with a water-soluble body cleaner before coating and degreased to form a zinc phosphate coating, it is possible to reduce contamination of the workplace compared to pre-cleaning with a conventional oil-soluble body cleaner and to improve corrosion resistance due to improved zinc phosphate coating. Will be higher.
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| KR1019960070850A KR100202939B1 (en) | 1996-12-24 | 1996-12-24 | Method of car painting |
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| KR1019960070850A KR100202939B1 (en) | 1996-12-24 | 1996-12-24 | Method of car painting |
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| KR100202939B1 true KR100202939B1 (en) | 1999-06-15 |
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| KR102124756B1 (en) * | 2020-03-27 | 2020-06-19 | 신창현대서비스 주식회사 | Method of Repainting Sheet Metal Part of Vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100863810B1 (en) * | 2008-03-18 | 2008-10-16 | (주)포비스 | The method of painting for automobile |
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1996
- 1996-12-24 KR KR1019960070850A patent/KR100202939B1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102124756B1 (en) * | 2020-03-27 | 2020-06-19 | 신창현대서비스 주식회사 | Method of Repainting Sheet Metal Part of Vehicle |
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| Publication number | Publication date |
|---|---|
| KR19980051925A (en) | 1998-09-25 |
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