US20100025257A1 - Method for surface treating metal substrate - Google Patents
Method for surface treating metal substrate Download PDFInfo
- Publication number
- US20100025257A1 US20100025257A1 US12/345,382 US34538208A US2010025257A1 US 20100025257 A1 US20100025257 A1 US 20100025257A1 US 34538208 A US34538208 A US 34538208A US 2010025257 A1 US2010025257 A1 US 2010025257A1
- Authority
- US
- United States
- Prior art keywords
- metal substrate
- substrate
- ncvm
- anodizing
- surface treating
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
Links
Images
Classifications
-
- 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
-
- 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
- C23C14/02—Pretreatment of the material to be coated
- C23C14/024—Deposition of sublayers, e.g. to promote adhesion of the coating
-
- 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
-
- 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
- C25D5/48—After-treatment of electroplated surfaces
Definitions
- the disclosure relates to a method for surface treating metal substrates.
- a surface treatment e.g., Non Conductive Vacuum Metallization, NCVM
- NCVM Non Conductive Vacuum Metallization
- the drawing is a flow chart of a surface treatment method according to an exemplary embodiment.
- the method may include the following steps: (S 1 ), providing a metal substrate; (S 2 ), trimming the metal substrate; (S 3 ), anodizing the metal substrate; (S 4 ), treating the metal substrate using NCVM process.
- a metal substrate is provided and formed into a housing pre-form by die-casting, punching, or forging.
- the metal substrate may be magnesium alloy or aluminum alloy.
- step S 2 the housing pre-form is trimmed to form a base housing.
- the base housing may be degreased using a trichloroethylene solution.
- step S 3 The base housing is anodized to form an anodic coating on an external surface of the substrate.
- the anodic coating creates tiny pores on the external surfaces of the substrate.
- Anodizing may be done using sulphuric acid, orthophosphoric acid, or chromic acid.
- step S 4 the base housing is treated using a NCVM process to form an NCVM coating on the anodic coating.
- an alloy housing is manufactured.
- the NCVM coating may partially fill the pores to interlock with the external surface of the alloy housing.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Treatment Of Metals (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Casings For Electric Apparatus (AREA)
- Forging (AREA)
Abstract
A method of treating a metal substrate comprise the steps of: anodizing the metal substrate to create pores on the surface of the substrate; and treating the metal substrate by NCVM to form a NCVM coating on the surface of the substrate.
Description
- 1. Technical Field
- The disclosure relates to a method for surface treating metal substrates.
- 2. Description of Related Art
- Typically, to improve external appearance and quality of a housing of a portable electronic device, a surface treatment (e.g., Non Conductive Vacuum Metallization, NCVM) can be applied.
- However, it can be difficult to treat alloy housings by the NCVM process because the surface of the housing is usually too smooth.
- Therefore, there is room for improvement in the art.
- Many aspects of the present method for surface treating a metal substrate can be better understood with reference to the following drawings. These drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present method. Moreover, in the drawings like reference numerals designate corresponding parts throughout the several views. Wherever possible, the same reference numbers are used throughout the drawings to refer to the same or like elements of an embodiment.
- The drawing is a flow chart of a surface treatment method according to an exemplary embodiment.
- What is described below is a method for surface treating a metal substrate. For purposes of illustration and description, an alloy housing of an electronic device is used. However, the exemplary embodiment is not limited to alloy housings, but can also be applied to other metal substrates that need to be processed using NCVM. [0008]
- Referring to the drawing, the method may include the following steps: (S1), providing a metal substrate; (S2), trimming the metal substrate; (S3), anodizing the metal substrate; (S4), treating the metal substrate using NCVM process.
- In step S1, a metal substrate is provided and formed into a housing pre-form by die-casting, punching, or forging. The metal substrate may be magnesium alloy or aluminum alloy.
- In step S2, the housing pre-form is trimmed to form a base housing. Then, the base housing may be degreased using a trichloroethylene solution.
- In step S3, The base housing is anodized to form an anodic coating on an external surface of the substrate. The anodic coating creates tiny pores on the external surfaces of the substrate. Anodizing may be done using sulphuric acid, orthophosphoric acid, or chromic acid.
- In step S4, the base housing is treated using a NCVM process to form an NCVM coating on the anodic coating. Thus, an alloy housing is manufactured.
- Because tiny pores can be formed in the surface of the base housing by anodizing, the NCVM coating may partially fill the pores to interlock with the external surface of the alloy housing.
- It is to be understood, however, that even through numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Claims (5)
1. A method of treating a metal substrate, comprising:
anodizing the metal substrate to create pores on the surface of the substrate; and
treating the metal substrate by NCVM to form a NCVM coating on the surface of the substrate.
2. The method as claimed in claim 1 , wherein the metal substrate is magnesium alloy or aluminum alloy.
3. The method as claimed in claim 1 , wherein the anodizing step is performed using sulphuric acid, orthophosphoric acid, or chromic acid.
4. The method as claimed in claim 1 , further comprising a step of degreasing the metal substrate before the step of anodizing.
5. The method as claimed in claim 4 , wherein the step of degreasing is performed using trichloroethylene solution.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810303197.0 | 2008-07-30 | ||
| CN200810303197A CN101638789A (en) | 2008-07-30 | 2008-07-30 | Surface processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20100025257A1 true US20100025257A1 (en) | 2010-02-04 |
Family
ID=41607223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US12/345,382 Abandoned US20100025257A1 (en) | 2008-07-30 | 2008-12-29 | Method for surface treating metal substrate |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20100025257A1 (en) |
| CN (1) | CN101638789A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100098890A1 (en) * | 2008-10-17 | 2010-04-22 | Shenzhen Futaihong Precision Industry Co., Ltd. | Device housing and method for making the same |
| US20100151168A1 (en) * | 2008-12-12 | 2010-06-17 | Shenzhen Futaihong Precision Industry Co., Ltd. | Housing and method for manufacturing the same |
| US20110014405A1 (en) * | 2009-07-14 | 2011-01-20 | Shenzhen Futaihong Precision Industry Co., Ltd. | Housing and method for making the housing |
| CN102205305A (en) * | 2011-06-03 | 2011-10-05 | 哈尔滨飞机工业集团有限责任公司 | Surface processing method for aluminum alloy section before painting |
| WO2013030770A1 (en) | 2011-08-31 | 2013-03-07 | Lite-On Mobile Oyj | Method of coating stainless steel housings of electronic devices by non conductive vacuum metallization |
| WO2020023022A1 (en) * | 2018-07-24 | 2020-01-30 | Hewlett-Packard Development Company, L.P. | Device housing with metallic luster |
| US11131036B2 (en) * | 2013-09-27 | 2021-09-28 | Apple Inc. | Cosmetic anodic oxide coatings |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389000B (en) * | 2014-11-05 | 2018-05-08 | 芜湖金龙模具锻造有限责任公司 | A kind of anodic oxidation guard method of bearing surface |
| CN105109260B (en) * | 2015-07-31 | 2018-01-19 | 广东欧珀移动通信有限公司 | Pack alloy appearance surfaces processing method and phone housing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4030922A (en) * | 1974-09-26 | 1977-06-21 | Fuji Photo Film Co., Ltd. | Image recording method |
| US6884336B2 (en) * | 2003-01-06 | 2005-04-26 | General Motors Corporation | Color finishing method |
-
2008
- 2008-07-30 CN CN200810303197A patent/CN101638789A/en active Pending
- 2008-12-29 US US12/345,382 patent/US20100025257A1/en not_active Abandoned
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4030922A (en) * | 1974-09-26 | 1977-06-21 | Fuji Photo Film Co., Ltd. | Image recording method |
| US6884336B2 (en) * | 2003-01-06 | 2005-04-26 | General Motors Corporation | Color finishing method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100098890A1 (en) * | 2008-10-17 | 2010-04-22 | Shenzhen Futaihong Precision Industry Co., Ltd. | Device housing and method for making the same |
| US20100151168A1 (en) * | 2008-12-12 | 2010-06-17 | Shenzhen Futaihong Precision Industry Co., Ltd. | Housing and method for manufacturing the same |
| US20110014405A1 (en) * | 2009-07-14 | 2011-01-20 | Shenzhen Futaihong Precision Industry Co., Ltd. | Housing and method for making the housing |
| CN102205305A (en) * | 2011-06-03 | 2011-10-05 | 哈尔滨飞机工业集团有限责任公司 | Surface processing method for aluminum alloy section before painting |
| WO2013030770A1 (en) | 2011-08-31 | 2013-03-07 | Lite-On Mobile Oyj | Method of coating stainless steel housings of electronic devices by non conductive vacuum metallization |
| US11131036B2 (en) * | 2013-09-27 | 2021-09-28 | Apple Inc. | Cosmetic anodic oxide coatings |
| WO2020023022A1 (en) * | 2018-07-24 | 2020-01-30 | Hewlett-Packard Development Company, L.P. | Device housing with metallic luster |
| US11920244B2 (en) | 2018-07-24 | 2024-03-05 | Hewlett-Packard Development Company, L.P. | Device housing with metallic luster |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101638789A (en) | 2010-02-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment |
Owner name: SHENZHEN FUTAIHONG PRECISION INDUSTRY CO., LTD.,CH Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GAO, DE-FENG;REEL/FRAME:022035/0777 Effective date: 20081220 Owner name: FIH (HONG KONG) LIMITED,HONG KONG Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GAO, DE-FENG;REEL/FRAME:022035/0777 Effective date: 20081220 |
|
| STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |