KR101045864B1 - Direct Surface Treatment of Magnesium Alloy Products - Google Patents
Direct Surface Treatment of Magnesium Alloy Products Download PDFInfo
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- KR101045864B1 KR101045864B1 KR1020090083421A KR20090083421A KR101045864B1 KR 101045864 B1 KR101045864 B1 KR 101045864B1 KR 1020090083421 A KR1020090083421 A KR 1020090083421A KR 20090083421 A KR20090083421 A KR 20090083421A KR 101045864 B1 KR101045864 B1 KR 101045864B1
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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
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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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
- C23G5/028—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons
- C23G5/02806—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons containing only chlorine as halogen atom
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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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
- C23G5/032—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing oxygen-containing compounds
Abstract
본 발명에 의한 마그네슘합금 제품의 직화식 표면처리방법은 마그네슘합금 제품을 트리클로로에틸렌(C2HCl3,trichloroethylene(TCE))용액으로 처리하여 표면의 유지를 제거하는 탈지단계, 상기 탈지단계에서 탈지된 마그네슘합금 제품을 아세톤 용액으로 처리하여 표면의 트리클로로에틸렌 용액을 제거하는 트리클로로에틸렌제거단계, 상기 트리클로로에틸렌제거단계에서 처리된 아세톤을 메탄올 용액으로 처리하여 표면의 아세톤을 중화하는 아세톤중화단계, 상기 아세톤중화단계에서 처리된 마그네슘합금 제품을 물로 세척한 뒤에 물기를 제거하는 세척단계, 상기 세척단계에서 세척된 마그네슘합금 제품의 표면에 표면처리용액을 분사하는 표면처리용액분사단계, 상기 표면처리용액분사단계에서 처리된 마그네슘합금 제품을 200 ~ 260℃의 내부공간을 구비한 직화기에 넣어서 10 ~ 15초동안 직화 처리하는 직화처리단계, 상기 직화처리단계에서 처리된 마그네슘합금 제품을 에탄올로 세척하는 최종세척단계, 상기 최종세척단계에서 세척된 마그네슘합금 제품을 건조하는 건조단계로 이루어진다.The direct surface treatment method of the magnesium alloy product according to the present invention is a degreasing step in which the magnesium alloy product is treated with trichloroethylene (C 2 HCl 3 , trichloroethylene (TCE)) solution to remove the surface oil, and degreasing in the degreasing step. Trichloroethylene removal step of removing the trichloroethylene solution on the surface by treating the magnesium alloy product with acetone solution, acetone neutralization step of neutralizing acetone on the surface by treating the acetone treated in the trichloroethylene removal step with methanol solution Washing step of removing the water after washing the magnesium alloy product treated in the acetone neutralization step, surface treatment solution spraying step of spraying a surface treatment solution on the surface of the magnesium alloy product washed in the washing step, the surface treatment The magnesium alloy product treated in the solution spraying step has an internal space of 200 ~ 260 ℃. Put in the loom equipped with a direct fire treatment step for 10 to 15 seconds, a final washing step of washing the magnesium alloy product treated in the direct processing step with ethanol, drying the magnesium alloy product washed in the final washing step Consists of steps.
또한 상기 표면처리용액은 메탄올(CH3OH), 아세톤(CH3COCH3), 클로로에틸 에테르((ClC2H4)2O), 다이아세톤 알코올(CH3COCH2COH(CH3)2 ), 디메틸글리옥심((CH3)2C2(NOH)2 )을 혼합한 용액이다.In addition, the surface treatment solution is methanol (CH 3 OH), acetone (CH 3 COCH 3 ), chloroethyl ether ((ClC 2 H 4 ) 2 O), diacetone alcohol (CH 3 COCH 2 COH (CH 3 ) 2 ) , Dimethylglyoxime ((CH 3 ) 2 C 2 (NOH) 2 ) Is a mixed solution.
따라서 본 발명은 마그네슘합금 표면에 묻은 기름 등과 같은 이물질을 제거 및 세척한 후에 메탄올(CH3OH), 아세톤(CH3COCH3), 클로로에틸 에테르((ClC2H4)2O), 다이아세톤 알코올(CH3COCH2COH(CH3)2 ), 디메틸글리옥심((CH3)2C2(NOH)2 )을 혼합한 용액으로 마그네슘합금 표면을 분사 처리하여 직화 방식으로 표면에 산화막을 형성하기 때문에, 직화에 의하여 표면 처리하는 시간이 매우 단축될 수 있어 마그네슘합금 제품의 표면에 산화 박막층을 신속하게 형성할 수 있고, 마그네슘합금 제품의 표면 전체에 표면처리용액을 균일하게 분사한 뒤에 신속하게 직화 방식으로 산화할 수 있어 산화 박막층을 균일하게 형성할 수 있는 등의 효과를 발휘한다.Therefore, in the present invention, after removing and washing foreign substances such as oil on the magnesium alloy surface, methanol (CH 3 OH), acetone (CH 3 COCH 3 ), chloroethyl ether ((ClC 2 H 4 ) 2 O), diacetone Alcohol (CH 3 COCH 2 COH (CH 3 ) 2 ), Dimethylglyoxime ((CH 3 ) 2 C 2 (NOH) 2 Since the oxide film is formed on the surface by spraying the surface of the magnesium alloy with a mixed solution of), the surface treatment time can be very shortened by direct firing, so that an oxide thin film layer can be quickly formed on the surface of the magnesium alloy product. The surface treatment solution may be uniformly sprayed on the entire surface of the magnesium alloy product, and then rapidly oxidized by direct weaving. Thus, the oxide thin film layer may be uniformly formed.
마그네슘합금, 마그네슘합금 제품, 산화막, 직화식, 표면처리, 표면처리방법 Magnesium alloy, magnesium alloy product, oxide film, direct type, surface treatment, surface treatment method
Description
본 발명은 마그네슘합금 제품의 표면을 직접 가열 방식으로 표면 처리하는 방법에 관한 것으로서, 더욱 상세하게는 마그네슘합금 제품의 표면을 신속하고도 균일하게 처리할 수 있도록 하는 마그네슘합금 제품의 직화식 표면처리방법에 관한 것이다.The present invention relates to a method for surface-treating a surface of a magnesium alloy product by direct heating, and more particularly, a direct surface treatment method for a magnesium alloy product for quickly and uniformly treating a surface of a magnesium alloy product. It is about.
일반적으로 마그네슘합금은 치수 안정성이 우수하고, 미강도, 전자기파 차폐성, 진동 감쇄 등이 알루미늄 합금과 철강에 비하여 우수하여 자동차와 항공기용 부품, 휴대폰 케이스, 노트북 컴퓨터 케이스, 안경테 등에 많이 사용되고 있으며, 표준 전극 단위가 낮고 내식성이 취약하여 부식 방지를 위하여 표면 처리하게 된다.In general, magnesium alloy has excellent dimensional stability, and excellent strength, electromagnetic shielding, and vibration damping are superior to aluminum alloy and steel, and are widely used in automobile and aircraft parts, mobile phone cases, laptop computer cases, and eyeglass frames. The unit is low and its corrosion resistance is poor, so it is surface treated to prevent corrosion.
그리고 마그네슘합금은 산화가 잘되는 금속이므로 전처리 과정인 표면처리공정이 필수적으로 필요하며, 이러한 마그네슘합금을 재질로 하는 제품을 표면 처리하기 위하여, 아노다이징(anodizing), 플라즈마 전해 산화(Plasma Electrolytic Oxidation) 등과 같은 습식 표면처리방법과 아크코팅 등과 같은 건식 표면처리방법 이 개발되었다.Since magnesium alloy is a well-oxidized metal, a surface treatment process, which is a pretreatment process, is necessary. In order to surface-treat a product made of magnesium alloy, anodizing, plasma electrolytic oxidation, etc. Dry surface treatment methods such as wet surface treatment and arc coating have been developed.
즉 마그네슘합금 제품의 표면을 표면처리하여 MgO 등의 박막층을 형성하게 된다.That is, the surface of the magnesium alloy product is surface treated to form a thin film layer such as MgO.
다시말하면 습식 표면처리방법에 사용되는 전해액은 수산화나트륨(NaOH)을 주로 사용하고 있으며, 상기 수산화나트륨에서 분리되는 수산기(OH-)가 마그네슘합금 제품의 표면층에 결합하는 바, 이렇게 형성된 산화피막 내부에서 형성되는 강한 전류장으로 산화물을 형성하여 마그네슘합금 제품의 표면층에 MgO와 Mg(OH)2박막층을 형성하게 된다.In other words, the electrolyte used in the wet surface treatment method mainly uses sodium hydroxide (NaOH), and the hydroxyl group (OH-) separated from the sodium hydroxide bonds to the surface layer of the magnesium alloy product. The oxide is formed by the strong current field to be formed to form MgO and Mg (OH) 2 thin film layer on the surface layer of the magnesium alloy product.
그러나 습식 표면처리방법은 마그네슘합금 제품의 표면층에 산화 박막층을 형성하는 시간이 많이 소요되어 제품의 표면을 보다 신속하게 처리할 수 없었다는 단점이 있다.However, the wet surface treatment method has a disadvantage in that it takes a long time to form an oxide thin film layer on the surface layer of the magnesium alloy product, so that the surface of the product cannot be processed more quickly.
그래서 종래에는 건식 표면처리방법을 이용하여 마그네슘합금 제품의 표면층에 산화 박막층을 형성하는 기술이 개발되어, 각종 이온 플레이팅 장비 개발과 공정 개발에 의해 아크코팅, 스퍼터링 및 HCD 코팅, 고기능 내마모성 코팅 기술이 있으나, 이러한 종래의 기술은 마그네슘합금 제품의 표면층에 산화 박막층을 보다 균일하게 형성하지 못했다는 단점이 있다.Therefore, in the related art, a technique for forming an oxide thin film layer on the surface layer of a magnesium alloy product by using a dry surface treatment method has been developed, and arc coating, sputtering and HCD coating, and high function wear resistance coating technology have been developed by developing various ion plating equipments and processes. However, this conventional technique has a disadvantage in that the oxide thin film layer is not formed more uniformly on the surface layer of the magnesium alloy product.
본 발명은 상기와 같은 종래 기술의 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은 건식방법 중에 직화 방식으로 마그네슘합금 제품의 표면을 처리함으로써 마그네슘합금 제품의 표면에 산화 박막층을 신속하고도 균일하게 형성할 수 있는 마그네슘합금 제품의 직화식 표면처리방법을 제공하는 데 있다.The present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to treat the surface of the magnesium alloy product in a direct method in the dry method by quickly and uniformly oxidizing the thin film layer on the surface of the magnesium alloy product To provide a direct surface treatment method of a magnesium alloy product that can be formed easily.
상기와 같은 목적을 달성하기 위하여, 본 발명은 마그네슘합금 제품을 트리클로로에틸렌(C2HCl3,trichloroethylene(TCE))용액으로 처리하여 표면의 유지를 제거하는 탈지단계, 상기 탈지단계에서 탈지된 마그네슘합금 제품을 아세톤 용액으로 처리하여 표면의 트리클로로에틸렌 용액을 제거하는 트리클로로에틸렌제거단계, 상기 트리클로로에틸렌제거단계에서 처리된 아세톤을 메탄올 용액으로 처리하여 표면의 아세톤을 중화하는 아세톤중화단계, 상기 아세톤중화단계에서 처리된 마그네슘합금 제품을 물로 세척한 뒤에 물기를 제거하는 세척단계, 상기 세척단계에서 세척된 마그네슘합금 제품의 표면에 표면처리용액을 분사하는 표면처리용액분사단계, 상기 표면처리용액분사단계에서 처리된 마그네슘합금 제품을 200 ~ 260℃의 내부공간을 구비한 직화기에 넣어서 10 ~ 15초동안 직화 처리하는 직화처리단계, 상기 직화처리단계에서 처리된 마그네슘합금 제품을 에탄올로 세척하는 최종세척단계, 상기 최종세척단계에서 세척된 마그네슘합금 제품을 건조하는 건조단계로 이루어지는 마그네슘합금 제품의 직화식 표면처리방법을 제공한다.In order to achieve the above object, the present invention is a degreasing step of removing the fat of the surface by treating the magnesium alloy product with trichloroethylene (C 2 HCl 3 , trichloroethylene (TCE)) solution, magnesium degreased in the degreasing step Trichloroethylene removal step of removing the trichloroethylene solution of the surface by treating the alloy product with acetone solution, acetone neutralization step of neutralizing acetone of the surface by treating the acetone treated in the trichloroethylene removal step with methanol solution, the Washing step to remove the water after washing the magnesium alloy product treated in the acetone neutralization step, surface treatment solution spraying step of spraying the surface treatment solution on the surface of the magnesium alloy product washed in the washing step, the surface treatment solution spray Magnesium alloy product treated in the step is a direct fire with an internal space of 200 ~ 260 ℃ The fire treatment step of putting in a direct fire treatment for 10 to 15 seconds, the final washing step of washing the magnesium alloy product treated in the fire treatment step with ethanol, and drying step of drying the magnesium alloy product washed in the final washing step Provided is a direct surface treatment method for magnesium alloy products.
또한 상기 표면처리용액은 메탄올(CH3OH), 아세톤(CH3COCH3), 클로로에틸 에테르((ClC2H4)2O), 다이아세톤 알코올(CH3COCH2COH(CH3)2 ), 디메틸글리옥심((CH3)2C2(NOH)2 )을 혼합한 용액이다.In addition, the surface treatment solution is methanol (CH 3 OH), acetone (CH 3 COCH 3 ), chloroethyl ether ((ClC 2 H 4 ) 2 O), diacetone alcohol (CH 3 COCH 2 COH (CH 3 ) 2 ) , Dimethylglyoxime ((CH 3 ) 2 C 2 (NOH) 2 ) Is a mixed solution.
이와 같이 이루어지는 본 발명에 의한 마그네슘합금 제품의 직화식 표면처리방법은 마그네슘합금 표면에 묻은 기름 등과 같은 이물질을 제거 및 세척한 후에 메탄올(CH3OH), 아세톤(CH3COCH3), 클로로에틸 에테르((ClC2H4)2O), 다이아세톤 알코올(CH3COCH2COH(CH3)2 ), 디메틸글리옥심((CH3)2C2(NOH)2 )을 혼합한 용액으로 마그네슘합금 표면을 분사 처리하여 직화 방식으로 표면에 산화막을 형성하기 때문에, 직화에 의하여 표면 처리하는 시간이 매우 단축될 수 있어 마그네슘합금 제품의 표면에 산화 박막층을 신속하게 형성할 수 있고, 마그네슘합금 제품의 표면 전체에 표면처리용액을 균일하게 분사한 뒤에 신속하게 직화 방식으로 산화할 수 있어 산화 박막층을 균일하게 형성할 수 있다는 이점이 있다.The direct surface treatment method of the magnesium alloy product according to the present invention is to remove and wash foreign substances such as oil on the surface of the magnesium alloy after methanol (CH 3 OH), acetone (CH 3 COCH 3 ), chloroethyl ether ((ClC 2 H 4 ) 2 O), diacetone alcohol (CH 3 COCH 2 COH (CH 3 ) 2 ), dimethylglyoxime ((CH 3 ) 2 C 2 (NOH) 2 Since the oxide film is formed on the surface by spraying the surface of the magnesium alloy with a mixed solution of), the surface treatment time can be very shortened by direct firing, so that an oxide thin film layer can be quickly formed on the surface of the magnesium alloy product. In addition, the surface treatment solution may be uniformly sprayed on the entire surface of the magnesium alloy product and then rapidly oxidized by direct wetting, thereby providing an oxide thin film layer uniformly.
이하 본 발명에 의한 마그네슘합금 제품의 직화식 표면처리방법의 바람직한 실시예를 상세하게 설명한다.Hereinafter, a preferred embodiment of a direct surface treatment method of a magnesium alloy product according to the present invention will be described in detail.
본 발명은 직화 방식으로 마그네슘합금 제품(이하 '제품'이라 약칭함)의 표 면을 처리하는 것이며, 일정한 온도를 유지하는 내부 공간을 구비한 직화기로 표면 처리하기 전에 제품의 표면에 묻은 기름이나 때를 제거하게 된다.The present invention is to treat the surface of magnesium alloy products (hereinafter referred to as 'product') by direct fire method, and oil or grease applied to the surface of the product before surface treatment by a direct fire machine having an internal space maintaining a constant temperature. Will be removed.
즉 제품의 표면의 유지를 제거하는 탈지단계에서는 제품을 트리클로로에틸렌(C2HCl3,trichloroethylene(TCE))용액으로 처리하는 것이다.In other words, in the degreasing step to remove the surface of the product, the product is treated with trichloroethylene (C 2 HCl 3 , trichloroethylene (TCE)) solution.
참고로 트리클로로에틸렌( C2HCl3, trichloroethylene(TCE))은 달콤한 냄새를 풍기는 무색 투명한 액체로서, 사업장에서 금속기계 부품의 탈유지 세정제, 금속 표면의 건조, 섬유공업에서의 세척과 염색, 일반 용해제, 라커의 희석제, 유리나 광학기구의 세척제 및 피혁의 지방 제거제 등으로 사용되는 유기용제이다.For reference, trichloroethylene (C 2 HCl 3 , trichloroethylene (TCE)) is a colorless, clear liquid with a sweet smell.It is a degreasing cleaner for metal machine parts, drying of metal surfaces, washing and dyeing in the textile industry, and general Organic solvents used as solvents, diluents for lacquers, cleaners for glass and optical instruments, and fat removers for leather.
이러한 트리클로로에틸렌으로 마그네슘합금 제품인 자동차와 항공기용 부품, 휴대폰 케이스, 노트북 컴퓨터 케이스, 안경테 등의 표면에 묻은 기름 등을 제거한다.The trichloroethylene removes oil on the surfaces of magnesium alloy products such as automobile and aircraft parts, mobile phone cases, notebook computer cases, and eyeglass frames.
상기와 같이 탈지단계에서 기름 등이 탈지된 제품의 표면에 묻은 트리클로로에틸렌을 제거하게 되는 바, 이러한 트리클로로에틸렌제거단계에서는 상기 탈지단계에서 탈지된 제품을 아세톤 용액으로 처리하여 표면의 트리클로로에틸렌 용액을 제거하는 것이다.As described above, the trichloroethylene attached to the surface of the oil degreased product is removed in the degreasing step. In the trichloroethylene removing step, the trichloroethylene on the surface of the degreasing step is treated with an acetone solution. Remove the solution.
참고로 상기 아세톤(CH3COCH3)은 물, 알코올, 에테르 등 대부분의 용매와 잘 섞이며, 상온에서 휘발성이 강하므로 인화성이 크며, 대부분의 환원제에 의하여 아이소프로필 알코올이 되고, 아말감 나트륨과는 테트라메틸에틸렌 글리콜을 생성하고, 이크롬산 나트륨과 황산과의 반응으로 아세트산과 이산화탄소를 생성하며, 암 모니아와 반응하여 다이아세톤아민 등과 같은 아세톤 아민을 생성한다.For reference, the acetone (CH 3 COCH 3 ) is well mixed with most solvents, such as water, alcohol, ether, and is highly flammable because it is volatile at room temperature, and isopropyl alcohol by most reducing agents, and with amalgam sodium Tetramethylethylene glycol is produced, the reaction of sodium dichromate with sulfuric acid produces acetic acid and carbon dioxide, and reacted with ammonia to produce acetone amines such as diacetoneamine and the like.
그리고 아세톤은 용매중 하나로서 플라스틱이나 셀룰로오스 도료 제작에 널리 쓰이고, 아세틸렌을 녹여 저장하는 용도로도 사용되며, 유기 합성의 원료로도 사용되며 아세톤으로부터 생성되는 대표적인 화합물은 용매, 시너 등으로 사용되는 다이아세톤 알코올이며, 실생활에서는 물과 유기용매 모두에 대해서 잘 녹아서 페인트와 같이 물로 세척되지 않는 물질을 세척하게 된다.Acetone is widely used in the manufacture of plastics and cellulose paints as one of the solvents, and is also used for dissolving and storing acetylene. It is also used as a raw material for organic synthesis, and typical compounds produced from acetone are used as solvents, thinners, etc. It is acetone alcohol, and in real life, it dissolves well in both water and organic solvents and washes substances that cannot be washed with water such as paint.
그리고 본 발명에서는 아세톤으로 처리된 제품을 물로 세척하기 위하여 제품에 묻은 아세톤을 중화할 필요가 있는 바, 아세톤중화단계에서 상기 트리클로로에틸렌제거단계에서 처리된 아세톤을 메탄올 용액으로 처리하여 제품의 표면의 아세톤을 중화하게 된다.And in the present invention it is necessary to neutralize the acetone on the product in order to wash the product treated with acetone, the acetone treated in the trichloroethylene removal step in the acetone neutralization step by treating with methanol solution of the surface of the product Neutralize acetone.
참고로 메탄올(CH3OH)은 가장 간단한 구조의 알코올로서 메틸알코올이라고도 하고, 목재의 건류로 얻어진 목초액에서 얻어졌기 때문에 목정(木精；wood spirit)이라고도 하며, 살리실산 등 각종 카르복시산의 메틸에스테르형 또는 각종 메틸에테르형으로서 여러 가지 천연물에 함유되어 있다.For reference, methanol (CH 3 OH) is the simplest alcohol, also called methyl alcohol, and is also called wood spirit because it is obtained from wood vinegar obtained by dry distillation of wood, and methyl ester type of various carboxylic acids such as salicylic acid or It is contained in various natural products as various methyl ether types.
메탄올은 무색 투명하고 특유의 방향이 있는 휘발성 액체이고, 물, 에탄올, 벤젠, 에테르 등과 같은 용매와 잘 혼합되며, 가솔린에 혼입하여 자동차의 내한연료(耐寒燃料)로서 사용되고, 에탄올에 혼입하여 변성알코올로서도 사용된다.Methanol is a colorless, transparent, volatile liquid with a distinctive aroma. It is mixed well with solvents such as water, ethanol, benzene, ether, etc., it is mixed with gasoline and used as cold fuel of automobiles. It is mixed with ethanol and modified alcohol. Also used as.
본 발명에서는 제품의 표면에 묻은 아세톤을 메탄올로 중화한 뒤, 세척할 필요가 있는 바, 세척단계에서는 상기 아세톤중화단계에서 처리된 제품을 물로 세척 한 뒤에 물기를 제거한다.In the present invention, it is necessary to wash after neutralizing acetone on the surface of the product with methanol, in the washing step to remove water after washing the product treated in the acetone neutralization step with water.
그리고 상기 세척단계에서 세척된 제품을 직화기에 넣기 전에 마지막으로 제품의 표면을 원활하게 직화 처리하기 위하여, 표면처리용액을 제품의 표면에 분사하는 표면처리용액분사단계를 진행한다.Then, in order to smoothly straighten the surface of the product before putting the product washed in the washing machine into the loom, the surface treatment solution spray step of spraying the surface treatment solution on the surface of the product is performed.
상기 표면처리용액분사단계에 사용되는 표면처리용액은 메탄올(CH3OH)과 아세톤(CH3COCH3), 클로로에틸 에테르((ClC2H4)2O), 다이아세톤 알코올(CH3COCH2COH(CH3)2 ), 디메틸글리옥심((CH3)2C2(NOH)2 )을 혼합한 혼합물로서, 제품의 표면에 골고루 살포하여 제품의 표면에 산화막을 균일하고도 신속하게 생성하게 한다.The surface treatment solution used in the surface treatment solution spray step is methanol (CH 3 OH) and acetone (CH 3 COCH 3 ), chloroethyl ether ((ClC 2 H 4 ) 2 O), diacetone alcohol (CH 3 COCH 2 COH (CH 3 ) 2 ), Dimethylglyoxime ((CH 3 ) 2 C 2 (NOH) 2 ), The mixture is evenly spread on the surface of the product to produce an even and fast oxide film on the surface of the product.
참고로 다이아세톤 알코올(CH3COCH2COH(CH3)2 , Diacetone Alcohol)은 맑은 무색의 케톤과 유사한 좋은 냄새가 나는 액체로서, 아세톤에서 생성되는 대표적인 화합물이며, 용매, 시너 등으로 사용되고, 알코올, 에테르, 방향족 탄화수소, 할로카본, 에스테르에 용해된다.For reference, diacetone alcohol (CH 3 COCH 2 COH (CH 3 ) 2 , Diacetone Alcohol) is a liquid with a good smell similar to a clear colorless ketone, a representative compound produced in acetone, used as a solvent, thinner, etc. , Ethers, aromatic hydrocarbons, halocarbons, esters.
디메틸글리옥심((CH3)2C2(NOH)2 ,dimethylglyoxime)은 고온에서 승화성을 보이는 무색이 침상 결정 또는 결정성 분말이며, 에탄올과 에테르에는 녹지만, 물에는 거의 녹지 않고, 아질산에틸에 메틸에틸케톤을 반응시켜서 생성되는 디아세틸모노옥심을 히드록실아민과 반응시켜 생성되며, 니켈, 파라듐 등 금속의 분석용 시약으로 사용된다.Dimethylglyoxime ((CH 3 ) 2 C 2 (NOH) 2 , dimethylglyoxime) is a colorless, acicular crystal or crystalline powder that shows sublimation at high temperatures, and is soluble in ethanol and ether, but hardly soluble in water, and hydrates diacetyl monooxime produced by reacting ethyl nitrite with methyl ethyl ketone Produced by reacting with oxylamine and used as analytical reagent for metals such as nickel and palladium.
아무튼 본 발명에 적용되는 상기 표면처리용액분사단계의 표면처리용액은 메탄올(CH3OH) 100 부피%를 기준으로 아세톤(CH3COCH3) 10 ~ 20 부피%, 클로로에틸 에테르((ClC2H4)2O) 1 ~ 10 부피%, 다이아세톤 알코올(CH3COCH2COH(CH3)2 ) 1 ~ 15 부피%, 디메틸글리옥심((CH3)2C2(NOH)2 ) 1 ~ 30 부피%를 메탄올에 혼합한 것이다.Anyway, the surface treatment solution of the surface treatment solution spraying step applied to the present invention is based on 100% by volume of methanol (CH 3 OH) 10 to 20% by volume of acetone (CH 3 COCH 3 ), chloroethyl ether ((ClC 2 H 4 ) 2 O) 1 to 10% by volume, diacetone alcohol (CH 3 COCH 2 COH (CH 3 ) 2 ) 1 to 15% by volume, dimethylglyoxime ((CH 3 ) 2 C 2 (NOH) 2 ) 1 to 30 volume% was mixed with methanol.
여기서 상기 아세톤은 화염온도 및 지속성에 영향을 미치고 20부피%보다 많이 혼합하면 기포의 발생으로 인하여 표면의 균일성을 떨어뜨리며, 상기 클로로에틸 에테르는 화염온도에 영향을 미치고, 다이아세톤 알코올은 표면 경화에 영향을 미치고, 디메틸글리옥심은 산화 촉매제로 사용되며, 상기와 같은 비율이 최적의 비율이며, 상기 비율을 벗어나면 내구성과 표면 균일성 등이 떨어지게 된다.Wherein the acetone affects the flame temperature and persistence, if mixed with more than 20% by volume decreases the uniformity of the surface due to the generation of bubbles, the chloroethyl ether affects the flame temperature, diacetone alcohol surface hardening In addition, dimethylglyoxime is used as an oxidation catalyst, and the above ratio is an optimal ratio. If the ratio is out of the ratio, durability and surface uniformity may be degraded.
한편 상기 표면처리용액분사단계에서 처리된 제품을 직화처리단계와 최종세척단계, 건조단계로 처리하여 표면 처리를 완료하게 된다.Meanwhile, the product treated in the surface treatment solution spraying step is treated with a direct treatment step, a final washing step, and a drying step to complete the surface treatment.
즉 상기 직화처리단계에서는 200 ~ 260℃의 내부공간을 구비한 직화기에 넣어서 10 ~ 15초동안 직화 처리하게 되며, 온도가 200℃보다 낮으면 표면 처리 시간이 지연될 뿐만 아니라 제품의 표면에 산화막이 쉽게 발생하지 않게 되고, 온도가 260℃보다 높으면 제품에 함유된 마그네슘으로 인하여 제품의 표면 상태가 균일하지 못하게 된다.In other words, in the direct processing step, the direct processing is put into a loom having an internal space of 200 to 260 ° C. for 10 to 15 seconds. It is not easily generated, and if the temperature is higher than 260 DEG C, the surface state of the product is not uniform due to the magnesium contained in the product.
물론 직화기는 오븐기 등과 같이 열원이 직접적으로 제품에 도달하게 되는 것이므로, 직화 시간이 10초보다 짧게 하면 산화막이 쉽게 발생되지 않으며, 15초보다 길면 제품의 표면의 질을 떨어뜨릴 수 있는 것이다.Of course, since the heat source directly reaches the product, such as an oven, if the fire time is shorter than 10 seconds, the oxide film is not easily generated, and if it is longer than 15 seconds, the surface of the product may be degraded.
상기 최종세척단계는 상기 직화처리단계에서 처리된 마그네슘합금 제품을 에탄올로 최종 세척하는 것이며, 상기 건조단계는 상기 최종세척단계에서 세척된 마그네슘합금 제품을 건조하는 것이다.The final washing step is to finally wash the magnesium alloy product treated in the direct processing step with ethanol, and the drying step is to dry the magnesium alloy product washed in the final washing step.
이렇게 본 발명에 의한 마그네슘합금 제품의 직화식 표면처리방법은 직화 방식으로 제품의 표면을 처리하기 때문에, 제품의 표면에 산화막을 형성하는 시간이 매우 짧아질 수 있다.Thus, since the direct surface treatment method of the magnesium alloy product according to the present invention treats the surface of the product by the direct method, the time for forming an oxide film on the surface of the product can be very short.
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| KR20080067795A (en) * | 2007-01-17 | 2008-07-22 | (주) 태양기전 | The surface treatment method for magnesium |
| KR20080067796A (en) * | 2007-01-17 | 2008-07-22 | (주) 태양기전 | The surface treatment method for magnesium |
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