KR20090123615A - Method of surface treatment for die casting materials for mobile phone case, and the structure - Google Patents

Method of surface treatment for die casting materials for mobile phone case, and the structure Download PDF

Info

Publication number
KR20090123615A
KR20090123615A KR1020080049775A KR20080049775A KR20090123615A KR 20090123615 A KR20090123615 A KR 20090123615A KR 1020080049775 A KR1020080049775 A KR 1020080049775A KR 20080049775 A KR20080049775 A KR 20080049775A KR 20090123615 A KR20090123615 A KR 20090123615A
Authority
KR
South Korea
Prior art keywords
aluminum
die
mobile phone
surface treatment
film
Prior art date
Application number
KR1020080049775A
Other languages
Korean (ko)
Other versions
KR101016278B1 (en
Inventor
서정호
박명점
서정민
Original Assignee
서정호
서정민
박명점
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 서정호, 서정민, 박명점 filed Critical 서정호
Priority to KR1020080049775A priority Critical patent/KR101016278B1/en
Publication of KR20090123615A publication Critical patent/KR20090123615A/en
Application granted granted Critical
Publication of KR101016278B1 publication Critical patent/KR101016278B1/en

Links

Images

Classifications

    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C23/00—Alloys based on magnesium
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/14—Metallic material, boron or silicon
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24—Vacuum evaporation
    • 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
    • C25D11/02—Anodisation

Abstract

PURPOSE: A surface treatment method of a die casting material for a cellular phone exterior and a structure thereof are provided to reduce environmental pollution by a painting process by converting an aluminum layer to an anodic oxidation coating film. CONSTITUTION: A surface treatment method of a die casting material for a cellular phone exterior is as follows. A metal surface of the exterior shaped by a die casting is grinded. A metal layer is spread out on the surface of exterior with a vacuum. An anodic oxidation coating film process is implemented on the metal layer spread with a vacuum. Coloring and sealing are implemented on the anodic oxidation coating film. The exterior is made of one of magnesium, aluminum, alloys of zinc.

Description

휴대폰 외장재용 다이캐스팅 소재의 표면처리방법 및 그 구조{Method of surface treatment for die casting materials for mobile phone case, and the structure}Method of surface treatment for die casting materials for mobile phone case, and the structure}

본 발명은 휴대폰 등 전기/전자기기의 외장재에 대한 표면처리방법 및 그 구조에 관한 것으로서, 특히 다이캐스팅 금속 소재를 이용한 외장재의 표면처리방법 및 그 구조에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface treatment method and structure of an exterior material of an electric / electronic device such as a mobile phone, and more particularly, to a surface treatment method and a structure of an exterior material using a die casting metal material.

휴대폰 등 전기/전자기기의 외장재로 사용되는 소재는 통상 플라스틱, 마그네슘 및 알루미늄이 주로 사용되고 있다. 이들 소재의 특징은 경량성, 성형성이 우수하며 특히 마그네슘 합금 및 알루미늄 합금의 금속 소재는 플라스틱 소재에 비해서 내충격성이 보다 우수하며 전자파 차폐성을 갖고 있다. Plastic, magnesium and aluminum are mainly used as materials used for exterior materials of electric / electronic devices such as mobile phones. The characteristics of these materials are excellent in light weight and formability. In particular, metal materials of magnesium alloy and aluminum alloy have better impact resistance than plastic materials and have electromagnetic shielding properties.

금속소재 중 마그네슘 합금은 알루미늄에 비해서 밀도가 낮아(각각 1.74 g/cm3 및 2.7 g/cm3) 경량성이 상대적으로 우수하여 외장재의 적용에 많은 관심을 기울였으나 그 소재의 특성상 표면처리의 난점으로 기대한 것 보다는 상업적 적용 이 제한되어 왔다. 또한 마그네슘 합금 및 알루미늄 합금의 휴대폰 외장재로서 성형방법은 그 복잡한 형상의 특성에 의해서 다이캐스팅기술이 가장 일반적으로 사용되고 있다. Among metal materials, magnesium alloy has lower density than aluminum (1.74 g / cm 3 and 2.7 g / cm 3, respectively ), and due to its relatively light weight, much attention has been paid to the application of exterior materials. Commercial applications have been limited rather than expected. In addition, the die casting technique is most commonly used for forming a mobile phone exterior material of a magnesium alloy and an aluminum alloy due to its complicated shape.

이들 외장재용 소재는 다이캐스팅에 의한 복잡한 형상의 성형 후 일반적으로 표면의 다양한 요구 특성 즉, 외장성(색상, 미려성), 내마모성, 내식성, 내후성(변색), 내구성(밀착성)을 만족시키기 위해서 적절한 표면처리가 실시되고 있으며, 일반적 예로 도금 및 도장을 통해서 이들 다양한 표면 특성을 충족시키고 있다.These materials for exterior materials are generally suitable for satisfying various requirements of the surface after molding of complex shapes by die casting, namely exterior (color, beautiful), abrasion resistance, corrosion resistance, weather resistance (discoloration) and durability (adhesiveness). Treatment is carried out, and these various surface properties are generally met by plating and painting, for example.

한편 일반적인 알루미늄 합금 소재는 상기 표면처리 기술 이외에 양극산화피막처리(anodizing) 기술이 적용될 수 있는 장점을 갖고 있다. 그러나 휴대폰 외장재용 다이캐스팅 알루미늄 합금의 표면은 다이캐스팅 기술의 특성상 표면의 불균일로 인해서 균일하고 미려한 색상의 표면처리에 난점이 있어서 양극산화피막처리기술이 널리 적용되지 못하고 있으며, 다만 흑색만 가능할 뿐이다. 알루미늄 합금에 형성된 양극산화피막에 착색처리(coloring)는 양극산화피막의 특징적인 다공성층에 염료를 봉입하고 봉공처리(sealing)하는 것이며, 이때 이미 형성된 양극산화피막이 불균일하면 착색처리 후 결과적인 표면의 색상이 부분적으로 불균일하고 미려하지 못함을 초래하여 상품성이 결여된다. 이러한 이유로 다이캐스팅 알루미늄 합금에 양극산화피막처리 기술을 이용한 발색처리의 적용은 제한되어 왔다.Meanwhile, a general aluminum alloy material has an advantage that anodizing technology may be applied in addition to the surface treatment technology. However, the surface of the die-casting aluminum alloy for mobile phone exterior materials has a difficulty in uniform and beautiful surface treatment due to the unevenness of the die casting technology. The coloring of the anodized film formed on the aluminum alloy is to encapsulate the dye and seal it in the characteristic porous layer of the anodized film. The color is partially uneven and not beautiful, resulting in lack of marketability. For this reason, the application of color development using anodization technology has been limited in die casting aluminum alloys.

한편 알루미늄 합금 판재를 사용하여 프레스 등 성형방법을 사용하는 경우에는 다이캐스팅 기술에 의한 표면 불균일을 회피할 수 있어 양극산화피막처리 기술 및 후속 발색처리를 적용해서 다양하고 균일한 색상의 구현이 가능하나 외장재의 복잡한 형상을 충족시키는데 한계가 있어서 부분적인 형상의 접합공정이 수반되는 단점이 있다.On the other hand, in the case of using a molding method such as a press using an aluminum alloy sheet, it is possible to avoid surface unevenness by die casting technology, so that various and uniform colors can be realized by applying anodizing technology and subsequent coloring treatment. There is a limit to meet the complex shape of the disadvantage that the partial joining process is involved.

또, 도금의 경우에는 금속광택의 색상이 보편적으로 구현되며 일반적인 도금기술이 소재 위에 동/니켈/크롬의 도금층을 형성시키는 것으로서 이때 니켈은 인체에 알레르기를 발생시키며 크롬은 통상적으로 6가 크롬액을 사용하므로 환경오염을 유발하는 기술이고, 도장의 경우에는 다양한 염료의 배합에 따른 색상 구현이 가능하나 공정의 특성상 VOC(volatile organic compound)가 발생되는 등 환경친화적이지 못한 단점이 있다. In addition, in the case of plating, the color of metallic luster is generally realized, and a general plating technique forms a plating layer of copper, nickel, and chromium on the material. Nickel causes allergy to the human body, and chromium typically uses hexavalent chromium liquid. It is a technology that causes environmental pollution, and in the case of painting, it is possible to realize color by blending various dyes, but there is a disadvantage that it is not environmentally friendly, such as VOC (volatile organic compound) is generated due to the characteristics of the process.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 휴대폰 등 전기/전자기기의 외장재로 다이캐스팅이 가능한 알루미늄, 마그네슘, 아연합금 등의 표면에 양극산화피막처리 및 착색 처리하여 다양하고, 미려하고, 균일한 색상을 구현할 수 있는 표면처리 기술 및 구조를 제공하는 것을 목적으로 한다.The present invention has been made to solve the above problems, it is various and beautiful by anodizing and coloring the surface of aluminum, magnesium, zinc alloy, etc. that can be die-casting as an exterior material of electric / electronic devices such as mobile phones It is an object of the present invention to provide a surface treatment technology and structure capable of realizing uniform color.

또, 휴대폰 등 전기/전자기기의 다이캐스팅 알루미늄, 마그네슘, 아연 합금의 표면에 필연적으로 형성되는 표면 불균일 즉, 물리적, 화학적 불균일을 양극산화피막처리 기술에 의한 착색처리 기술을 적용하여 해결하는 것을 목적으로 한다. In addition, to solve the surface unevenness that is inevitably formed on the surface of die-casting aluminum, magnesium, zinc alloy of electric / electronic devices such as mobile phones by applying coloring treatment technology by anodizing technology. do.

본 발명은 다이캐스팅 공정에 필연적으로 수반되는 표면 불균일을 양극산화피막처리 및 발색처리 기술을 통하여 극복함으로써 제조 과정이 친 환경적이고 다 이캐스팅 금속재로 이루어진 외장재의 품질 향상 및 다양한 색상을 구현할 수 있도록 한다.The present invention overcomes the surface unevenness that is inevitably involved in the die casting process through anodization and color development techniques, so that the manufacturing process can be environmentally friendly and improve the quality of the exterior material made of die-casting metal material and various colors.

특히, 본 발명의 휴대폰 외장재용 다이캐스팅 소재의 표면처리방법은 다이캐스팅에 의하여 성형된 금속재로 된 외장재의 표면을 연마하는 단계, 상기 외장재의 표면에 금속막을 진공증착하는 단계, 상기 진공증착된 금속막을 양극산화피막 처리하는 단계, 상기 양극산화피막에 착색 및 봉공처리 하는 단계로 이루어지는 것을 특징으로 한다.In particular, the surface treatment method of the die-casting material for a mobile phone exterior material of the present invention is the step of polishing the surface of the metal material formed by die casting, vacuum depositing a metal film on the surface of the material, the vacuum-deposited metal film anode The step of anodizing, characterized in that it comprises a step of coloring and sealing the anodized film.

또, 상기 금속재로 된 외장재는 마그네슘, 알루미늄, 아연의 합금 중 선택되는 어느 하나의 금속으로 이루어지는 것을 특징으로 한다.In addition, the exterior material of the metal material is characterized in that it is made of any one metal selected from the alloy of magnesium, aluminum, zinc.

또, 상기 진공증착된 금속막은 알루미늄막으로 이루어지는 것을 특징으로 한다.In addition, the vacuum-deposited metal film is characterized in that the aluminum film.

즉, 본 발명의 휴대폰 외장재용 다이캐스팅 소재는 마그네슘, 알루미늄, 아연의 합금 중 선택되는 어느 하나의 금속을 이용하여 다이캐스팅된 외장재 표면에 알루미늄막을 증착한 후 그 알루미늄막을 양극산화피막 처리하고 그 양극산화피막에 착색 및 봉공처리하여 이루어진다. That is, the die-casting material for cellular phone exterior material of the present invention deposits an aluminum film on the surface of the die-casted exterior material by using any one metal selected from an alloy of magnesium, aluminum, and zinc, and then anodizes the aluminum film and anodizes the aluminum film. It is made by coloring and sealing.

본 발명은 다이캐스팅 알루미늄 합금 등의 외장재에 양극산화피막처리 기술을 통하여 균일하고 미려한 다양한 색상의 구현이 가능하므로 휴대폰 및 전자/전기기기의 외장재의 품질을 향상시킬 수 있는 효과를 얻을 수 있다.The present invention can achieve a uniform and beautiful variety of colors through the anodized film treatment technology on the exterior material, such as die-casting aluminum alloy, it is possible to obtain the effect of improving the quality of the exterior material of the mobile phone and electronic / electrical equipment.

또, 본 발명은 도금이나 도장 방법과 비교하여 표면처리 기술이 보다 환경친 화적이므로 환경오염을 개선하는 효과를 얻을 수 있다. In addition, the present invention has an effect of improving the environmental pollution because the surface treatment technology is more environmentally friendly than the plating or coating method.

이하, 본 발명의 다이캐스팅에 의하여 성형된 금속 합금재로 이루어진 외장재의 표면처리 방법 및 그 처리 방법에 의하여 형성된 외장재에 대하여 상세히 설명한다.Hereinafter, the surface treatment method of the exterior material which consists of the metal alloy material shape | molded by the die-casting of this invention, and the exterior material formed by the processing method are demonstrated in detail.

알루미늄 합금, 마그네슘 합금, 아연 합금 등의 다이캐스팅 기술은 생산성이 매우 높으며 복잡한 형상을 요구하는 휴대폰 등 전자/전기기기의 외장재 성형방법으로 적합하다. 다이캐스팅 기술은 금속의 용탕을 소정의 형상을 갖는 금형에 가압 주조하는 기술로서 이때 사용되는 주조용 알루미늄 합금은 유동성 및 주입성을 부여하기 위해서 Si 성분이 10 - 14% 정도 포함된다. 또한 가압시 공기가 유입되므로 약 3%의 기공율을 갖는 것으로 알려져 있으며 이들 중 일부는 표면과 연결된 기공을 형성할 수도 있다. 이와 더불어서 응고현상은 표면이 내부보다 먼저 시작되고 수지상의 응고현상을 나타내므로 일반적으로 응고 결정조직의 크기는 내부와 외부가 상이하며 특히 표면에는 물결모양의 응고 결정조직을 나타내어 표면조직의 불균일을 초래한다. 즉, 도 1과 같이 표면에 나타나는 불균일은 주조용 알루미늄 합금의 Si의 노출에 의한 화학적 불균일과 응고현상에 따른 결정조직의 불균일 및 가압시 유입된 공기에 의한 기공 등의 물리적 불균일로서 이들은 양극산화피막의 불균일을 초래한다.Die casting technologies such as aluminum alloys, magnesium alloys and zinc alloys are highly productive and suitable for forming exterior materials of electronic / electrical devices such as mobile phones requiring complex shapes. Die casting technology is a technique of pressure casting a molten metal into a mold having a predetermined shape. The casting aluminum alloy used in this case includes about 10 to 14% of a Si component in order to provide fluidity and injectability. In addition, since air is introduced during pressurization, it is known to have a porosity of about 3%, and some of them may form pores connected to the surface. In addition, the coagulation phenomenon is that the surface starts earlier than the inside and shows the dendritic coagulation phenomenon. Generally, the size of coagulation crystal structure is different from inside and outside. do. That is, as shown in FIG. 1, the non-uniformity appearing on the surface is a physical non-uniformity such as chemical non-uniformity caused by exposure of Si of the aluminum alloy for casting and non-uniformity of crystal structure due to solidification phenomenon, and pores by air introduced during pressurization. Resulting in non-uniformity.

이러한 표면 불균일을 극복하기 위해서 본 발명은 도 2와 같이 In order to overcome such surface unevenness, the present invention is as shown in FIG.

다이캐스팅 공정 및 연마 공정 후 진공증착에 의한 순알루미늄층을 형성한 다. 연마공정은 다이캐스팅에 의한 표면 산화물, 이물질 등을 제거하고, 요구되는 표면 질감에 따라서 샌드블라스팅, hair line 또는 buffing 등에 의한 광택 연마가 실시될 수 있다. After the die casting process and the polishing process, a pure aluminum layer is formed by vacuum deposition. The polishing process removes surface oxides, foreign matters, etc. by die casting, and may be performed by sand blasting, hair line or buffing according to the required surface texture.

알루미늄의 진공증착은 물리진공증착(physical vapor deposition)이 실시되며 증착법(evaporation), 스퍼터링(sputtering), 이온플레이팅(ion plating) 중에 선택될 수 있다. 화학진공증착(Chemical vapor deposition)은 공정 온도가 통상적으로 500oC 이상이므로 소재의 변형등의 문제로 적절하지 못하며, 상용화된 알루미늄의 전기도금법은 알려져 있지 않다.Vacuum deposition of aluminum is performed by physical vapor deposition and may be selected from evaporation, sputtering, and ion plating. Chemical vapor deposition is not suitable for problems such as deformation of the material because the process temperature is typically 500 o C or more, and the electroplating method of commercially available aluminum is not known.

알루미늄의 물리진공증착은 진공조 장입전 1차 전처리를 통해 연마에 의한 표면이물질이 제거되고 증착은 진공조에서 바로 알루미늄이 코팅되며, 스퍼터링 및 이온 플레이팅의 경우에는 Ar 분위기에서 이물질 또는 산화막 제거 목적으로 2차 전처리된 후 알루미늄이 코팅된다. 이때 사용되는 알루미늄의 공급원은 순도 99% 이상의 고순도 알루미늄이 사용된다. Physical vacuum deposition of aluminum removes surface foreign matter by polishing through primary pretreatment before charging the vacuum chamber, and aluminum is coated directly in the vacuum chamber, and in the case of sputtering and ion plating, it removes foreign substances or oxide film under Ar atmosphere. After the second pretreatment with aluminum is coated. At this time, the source of aluminum used is high purity aluminum having a purity of 99% or more.

이어서, 도 3과 같이 알루미늄층은 물리적 및 화학적 표면 불균일이 없는 균일한 코팅층이며 양극산화피막을 형성한다. 진공증착에 의하여 형성된 알루미늄층은 일부 또는 전부가 후속 공정에 의해서 양극산화피막으로 전환되므로 알루미늄층의 두께는 요구되는 양극산화피막의 두께에 대응해서 1 - 30 μm으로 형성시킨다.Subsequently, as shown in FIG. 3, the aluminum layer is a uniform coating layer without physical and chemical surface irregularities, and forms an anodized film. Since some or all of the aluminum layer formed by vacuum deposition is converted into anodized film by a subsequent process, the thickness of the aluminum layer is formed to be 1-30 μm corresponding to the thickness of the anodized film required.

양극산화피막처리는 통상의 황산, 수산, 크롬산 등 또는 이들의 혼합산 어느 것이나 사용할 수 있으며 요구되는 색상에 따라서 피막 두께가 결정되며 5 - 50 μ m으로 형성시킨다. 양극산화피막은 도 4와 같이 더 치밀한 베리어 층과 그 위에 형성된 다공성층으로 형성된다. 이때 형성된 다공성층에 유기물착색, 무기물착색, 전해착색 등 염료착색 법으로 염료 등을 착색처리하고 최종적으로 수화봉공, 금속성 봉공, 유기물 봉공, 저온 봉공 등의 방법으로 기공을 막아주는 봉공 처리하여 착색의 내후성/내구성 및 피막의 내식성을 제공한다.Anodized film treatment can use any of sulfuric acid, hydroxyl, chromic acid or the like, or a mixed acid thereof, and the film thickness is determined in accordance with the required color and is formed in the range of 5-50 μm. Anodized film is formed of a denser barrier layer and a porous layer formed thereon as shown in FIG. At this time, dyes are colored on the porous layer by organic dye coloring, inorganic coloring, electrolytic coloring, etc., and finally, sealing is performed by blocking the pores by hydration sealing, metallic sealing, organic sealing, and low temperature sealing. It provides weather resistance / durability and corrosion resistance of the coating.

도 1은 본 발명의 다이캐스팅에 의하여 성형된 외장재의 표면 구조를 나타내는 도면이다.1 is a view showing the surface structure of a packaging material molded by the die casting of the present invention.

도 2는 본 발명의 다이캐스팅에 의하여 성형된 외장재 표면에 알루미늄 진공 증착막이 형성된 단면도이다.2 is a cross-sectional view of the aluminum vacuum deposition film formed on the surface of the packaging material formed by the die casting of the present invention.

도 3은 본 발명의 다이캐스팅에 의하여 성형된 외장재 표면에 양극산화피막이 형성된 단면도이다.3 is a cross-sectional view in which an anodized film is formed on a surface of a packaging material formed by the die casting of the present invention.

도 4는 본 발명의 양극산화피막에 발색 및 착색 처리한 상태를 나타내는 단면도이다.4 is a cross-sectional view showing a state in which coloration and coloring are performed on the anodized film of the present invention.

Claims (7)

다이캐스팅에 의하여 성형된 금속재로 된 외장재의 표면을 연마하는 단계,Polishing the surface of the exterior material made of metal material formed by die casting; 상기 외장재의 표면에 금속막을 진공증착하는 단계,Vacuum depositing a metal film on the surface of the packaging material; 상기 진공증착된 금속막을 양극산화피막 처리하는 단계,Anodizing the vacuum deposited metal film; 상기 양극산화피막에 착색 및 봉공처리 하는 단계로 이루어지는 것을 특징으로 하는 휴대폰 외장재용 다이캐스팅 소재의 표면처리방법.The surface treatment method of the die-casting material for a mobile phone exterior material, characterized in that it comprises the step of coloring and sealing the anodized film. 제1항에 있어서,The method of claim 1, 상기 금속재로 된 외장재는 마그네슘, 알루미늄, 아연의 합금 중 선택되는 어느 하나의 금속으로 이루어지는 것을 특징으로 하는 휴대폰 외장재용 다이캐스팅 소재의 표면처리방법. The metal material is a surface treatment method of the die-casting material for a mobile phone exterior material, characterized in that made of any one metal selected from the alloy of magnesium, aluminum, zinc. 제1항에 있어서,The method of claim 1, 상기 진공증착된 금속막은 알루미늄막으로 이루어지는 것을 특징으로 하는 휴대폰 외장재용 다이캐스팅 소재의 표면처리방법.The vacuum-deposited metal film is a surface treatment method of the die-casting material for mobile phone exterior material, characterized in that made of an aluminum film. 제3항에 있어서,The method of claim 3, 상기 진공증착은 증착법, 스퍼터링법, 이온플레이팅법 중 선택되는 어느 하나의 방법으로 이루어지는 것을 특징으로 하는 휴대폰 외장재용 다이캐스팅 소재의 표면처 리방법.The vacuum deposition is a surface treatment method of the die-casting material for a mobile phone exterior material, characterized in that any one selected from the evaporation method, sputtering method, ion plating method. 제1내지 제4항 중 어느 한 항에 있어서,The method according to any one of claims 1 to 4, 상기 진공증착된 금속막의 두께는 1-30㎛로 형성되고, 상기 양극산화피막의 두께는 5-50㎛로 형성되는 것을 특징으로 하는 휴대폰 외장재용 다이캐스팅 소재의 표면처리방법.The thickness of the vacuum-deposited metal film is formed to 1-30㎛, the thickness of the anodized film is a surface treatment method of the die casting material for mobile phone exterior material, characterized in that formed in 5-50㎛. 마그네슘, 알루미늄, 아연의 합금 중 선택되는 어느 하나의 금속을 이용하여 다이캐스팅된 외장재 표면에 알루미늄막을 증착한 후 그 알루미늄막을 양극산화피막 처리하고 그 양극산화피막에 착색 및 봉공처리하여 이루어진 휴대폰 외장재용 다이캐스팅 소재. Die-casting for mobile phone exterior materials made by depositing an aluminum film on the surface of die-casted exterior material by using any one metal selected from alloys of magnesium, aluminum and zinc, and then anodizing the aluminum film and coloring and sealing the anodized film. Material. 제6항에 있어서,The method of claim 6, 상기 외장재 표면에 증착되는 알루미늄막의 두께는 1-30㎛로 형성되고, 상기 양극산화피막의 두께는 5-50㎛로 형성되는 것을 특징으로 하는 휴대폰 외장재용 다이캐스팅 소재.The thickness of the aluminum film deposited on the surface of the packaging material is formed of 1-30㎛, the thickness of the anodized film is a die casting material for a mobile phone exterior material, characterized in that formed in 5-50㎛.
KR1020080049775A 2008-05-28 2008-05-28 Method of surface treatment for die casting materials for mobile phone case, and the structure KR101016278B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020080049775A KR101016278B1 (en) 2008-05-28 2008-05-28 Method of surface treatment for die casting materials for mobile phone case, and the structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020080049775A KR101016278B1 (en) 2008-05-28 2008-05-28 Method of surface treatment for die casting materials for mobile phone case, and the structure

Publications (2)

Publication Number Publication Date
KR20090123615A true KR20090123615A (en) 2009-12-02
KR101016278B1 KR101016278B1 (en) 2011-02-18

Family

ID=41685826

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020080049775A KR101016278B1 (en) 2008-05-28 2008-05-28 Method of surface treatment for die casting materials for mobile phone case, and the structure

Country Status (1)

Country Link
KR (1) KR101016278B1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012141464A2 (en) * 2011-04-13 2012-10-18 바코스 주식회사 Die-cast-alloy surface-processing method, and die-cast alloy material having a surface structure produced thereby
CN103052290A (en) * 2011-10-14 2013-04-17 三星电子株式会社 Electronic device case and method for treating surface thereof
KR101346014B1 (en) * 2012-04-12 2013-12-31 바코스 주식회사 Surface treating method of internal/external metal material, and internal/external metal material comprising surface structure manufactured using the same
WO2016003089A1 (en) * 2014-06-30 2016-01-07 조상무 Method for treating surface of metal interior and exterior material, which forms aluminum equiaxed grain structure, through cvd process, and metal interior and exterior material surface-treated using same
CN106555214A (en) * 2015-09-25 2017-04-05 比亚迪股份有限公司 The preparation method of metal surface microporous processing method and metal-resin composite
WO2018139749A1 (en) * 2017-01-26 2018-08-02 삼성전자주식회사 Housing, method for manufacturing housing, and electronic device comprising same
KR20190110178A (en) * 2018-03-20 2019-09-30 주식회사 에이스테크놀로지 High Corrosion Resistant Surface Treatment Coating Method of Magnesium Die-Casting Alloy
US11312107B2 (en) * 2018-09-27 2022-04-26 Apple Inc. Plugging anodic oxides for increased corrosion resistance

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106757253A (en) * 2016-12-29 2017-05-31 宇龙计算机通信科技(深圳)有限公司 A kind of double-colored handling process in metal surface, metal shell and mobile device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60208471A (en) * 1984-03-30 1985-10-21 Citizen Watch Co Ltd External parts for timepiece
JPS63105999A (en) 1986-10-21 1988-05-11 Nippon Light Metal Co Ltd Partial bright treatment of aluminum wheel
JPS63161159A (en) 1986-12-23 1988-07-04 Kobe Steel Ltd Manufacture of highly corrosion resistant al composite material
KR20050102018A (en) * 2004-04-20 2005-10-25 송정식 Cell phone outer cover

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012141464A3 (en) * 2011-04-13 2013-01-03 바코스 주식회사 Die-cast-alloy surface-processing method, and die-cast alloy material having a surface structure produced thereby
KR101334323B1 (en) * 2011-04-13 2013-11-27 바코스 주식회사 Surface Treating Method Of Die Casting Alloy, And Die Casting Alloy Comprising Surface Structure Manufactured Using The Same
WO2012141464A2 (en) * 2011-04-13 2012-10-18 바코스 주식회사 Die-cast-alloy surface-processing method, and die-cast alloy material having a surface structure produced thereby
US9206522B2 (en) 2011-10-14 2015-12-08 Samsung Electronics Co., Ltd. Electronic device case and surface treatment method thereof
CN103052290A (en) * 2011-10-14 2013-04-17 三星电子株式会社 Electronic device case and method for treating surface thereof
US20130093299A1 (en) * 2011-10-14 2013-04-18 Samsung Electronics Co., Ltd. Electronic device case and surface treatment method thereof
KR20130040322A (en) * 2011-10-14 2013-04-24 삼성전자주식회사 Electronic device case and method for treating surface thereof
KR101346014B1 (en) * 2012-04-12 2013-12-31 바코스 주식회사 Surface treating method of internal/external metal material, and internal/external metal material comprising surface structure manufactured using the same
WO2016003089A1 (en) * 2014-06-30 2016-01-07 조상무 Method for treating surface of metal interior and exterior material, which forms aluminum equiaxed grain structure, through cvd process, and metal interior and exterior material surface-treated using same
CN106555214A (en) * 2015-09-25 2017-04-05 比亚迪股份有限公司 The preparation method of metal surface microporous processing method and metal-resin composite
WO2018139749A1 (en) * 2017-01-26 2018-08-02 삼성전자주식회사 Housing, method for manufacturing housing, and electronic device comprising same
US11330732B2 (en) 2017-01-26 2022-05-10 Samsung Electronics Co., Ltd. Housing, method for manufacturing housing, and electronic device comprising same
KR20190110178A (en) * 2018-03-20 2019-09-30 주식회사 에이스테크놀로지 High Corrosion Resistant Surface Treatment Coating Method of Magnesium Die-Casting Alloy
US11312107B2 (en) * 2018-09-27 2022-04-26 Apple Inc. Plugging anodic oxides for increased corrosion resistance

Also Published As

Publication number Publication date
KR101016278B1 (en) 2011-02-18

Similar Documents

Publication Publication Date Title
KR101016278B1 (en) Method of surface treatment for die casting materials for mobile phone case, and the structure
TWI515333B (en) Method for forming protective coating layer of magnesium alloy and protective coating layer of magnesium alloy therefrom
US9206522B2 (en) Electronic device case and surface treatment method thereof
US20080156638A1 (en) Process for sputtering aluminum or copper onto aluminum or magnalium alloy substrates
CN107295765B (en) A kind of plastics mobile terminal shell of metal-like
CN102181861A (en) Method for surface treatment of metal alloy
KR20140094678A (en) Method for surface-treating aluminium alloy and aluminium alloy cover having pattern for electronic article
US20180105939A1 (en) Die-cast aluminium alloy piece, and processing method and mobile terminal therefor
KR100846037B1 (en) Cover structure for electronic device and method of manufacturing same
US20050067273A1 (en) Chrome coating composition
KR20120045469A (en) Method of surface treatment for aluminium die casting materials for electronic device case, and the structure
KR101334323B1 (en) Surface Treating Method Of Die Casting Alloy, And Die Casting Alloy Comprising Surface Structure Manufactured Using The Same
US20190345611A1 (en) Method for producing corrosion-stable and optionally colour/metallically coated and decorative plastic components
KR101181421B1 (en) Surface treatment method for magnesium alloy
CN103628108B (en) Die casting surface treatment method and products thereof
KR100796633B1 (en) Method for surface treating magnesium metal
JP2007002303A (en) Metal surface treatment method
KR20150106981A (en) A coating method for light weight alloy die-casting application
KR20120084640A (en) Anodizable aluminium alloy for diecasting and method for diecasting and anodizing using the same
CN206927957U (en) A kind of multicolour aluminum alloy casing
KR101745949B1 (en) Surface treatment method of plastic material and plastic material having surface structure produced by the method
US20190256984A1 (en) Coated alloy substrates
KR20090115034A (en) Method for surface treating available colour performance and luster of magnesium metal
KR20090015696A (en) Surface treatment method of die casting preform, die casting product by using the same and display device having the same
KR101584293B1 (en) Product of color developing surface and Method of manufacturing the same

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
AMND Amendment
E601 Decision to refuse application
AMND Amendment
J201 Request for trial against refusal decision
B701 Decision to grant
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee