EP2177647A1 - Verfahren zum Bilden einer mehrfarbigen Aluminiumlegierung - Google Patents

Verfahren zum Bilden einer mehrfarbigen Aluminiumlegierung Download PDF

Info

Publication number: EP2177647A1
Authority: EP; European Patent Office
Prior art keywords: substrate; colored; oxide layer; external surface; forming
Prior art date: 2008-10-20
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.): Granted

Application number

EP09168633A

Other languages

English (en)

French (fr)

Other versions

EP2177647B1 (de

Inventor

Chia-Wei Hsu

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Individual

Original Assignee

Individual

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.)

2008-10-20

Filing date

2009-08-25

Publication date

2010-04-21

2009-08-25 Application filed by Individual filed Critical Individual

2010-04-21 Publication of EP2177647A1 publication Critical patent/EP2177647A1/de

2011-03-23 Application granted granted Critical

2011-03-23 Publication of EP2177647B1 publication Critical patent/EP2177647B1/de

Status Active legal-status Critical Current

2029-08-25 Anticipated expiration legal-status Critical

Links

238000000034 method Methods 0.000 title claims abstract description 20
229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 16
239000000758 substrate Substances 0.000 claims abstract description 67
239000012528 membrane Substances 0.000 claims abstract description 15
239000008151 electrolyte solution Substances 0.000 claims abstract description 13
238000012545 processing Methods 0.000 claims abstract description 11
238000007743 anodising Methods 0.000 claims abstract description 10
238000012958 reprocessing Methods 0.000 claims abstract description 9
238000004140 cleaning Methods 0.000 claims abstract description 8
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
239000002826 coolant Substances 0.000 claims description 12
238000004381 surface treatment Methods 0.000 claims description 6
238000001035 drying Methods 0.000 claims description 5
238000003754 machining Methods 0.000 claims description 4
239000000463 material Substances 0.000 claims description 3
238000009740 moulding (composite fabrication) Methods 0.000 abstract description 25
229910052751 metal Inorganic materials 0.000 description 4
239000002184 metal Substances 0.000 description 4
238000005520 cutting process Methods 0.000 description 3
238000003801 milling Methods 0.000 description 3
239000012535 impurity Substances 0.000 description 2
238000002407 reforming Methods 0.000 description 2
238000011282 treatment Methods 0.000 description 2
230000000740 bleeding effect Effects 0.000 description 1
239000000919 ceramic Substances 0.000 description 1
238000010586 diagram Methods 0.000 description 1
230000000694 effects Effects 0.000 description 1
238000009413 insulation Methods 0.000 description 1
238000004519 manufacturing process Methods 0.000 description 1
230000001681 protective effect Effects 0.000 description 1
239000000126 substance Substances 0.000 description 1

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
- C25D11/04—Anodisation of aluminium or alloys based thereon
- 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
- C25D11/022—Anodisation on selected surface areas
- 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
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/12—Anodising more than once, e.g. in different baths
- 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
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/14—Producing integrally coloured layers

Definitions

the present invention relates to a method of forming a multicolor aluminum alloy, and more particularly to a method of forming a multicolor aluminum alloy by anodizing for preferred color quality.
a conventional anodizing surface treatment comprises forming a base oxide layer on a metal substrate by chemical or electrochemical treatment to provide a protective effect to the metal substrate.
the metal may be aluminum alloy.
the conventional anodizing surface treatment may further comprise steps of forming a base ink layer on the base oxide layer, forming a subsequent oxide layer and forming a subsequent ink layer on the subsequent oxide layer, wherein the steps after reforming the surface of the base layers may be repeated and the subsequent layer is included as the base in such repeated treatments to provide a multicolor effect.
the step of reforming the surface of the base layer requires a cutting or a milling process to expose the substrate such as cutting or milling, which uses coolant and oil that must be fully removed, or the coolant and oil prevent the surface oxide layer being formed on the substrate.
cutting or milling may damage the original ink layer.
the step of forming the surface oxide layer may cause the original oxide layer to flake, thereby allowing the metal substrate to be oxidized.
the surface ink layer may bleed into the base ink layer.
the base ink layer must also be fully removed before a surface oxide layer can be formed on the substrate so increasing a manufacturing time of the multicolor substrate.
the present invention provides a method of forming multicolor on aluminum alloy to mitigate or obviate the aforementioned problems.
the main objective of the present invention is to provide a method of forming multicolor aluminum alloy, and more particularly to a method of forming multicolor aluminum alloy using anodizing surface treatment for preferred color quality.
a method for forming multicolor aluminum alloy comprising steps of preparing, surface treating, forming, processing and reprocessing.
Preparing comprises providing an aluminum alloy substrate and cleaning with water.
Surface treating comprises disposing the substrate in a base electrolytic solution to form a base oxide layer by anodizing.
Forming comprises forming a membrane of transparent, acid-proof, insulated plastic material on the substrate.
Processing comprises removing local area membrane and corresponding oxide layer from the substrate and cleaning.
Reprocessing comprises disposing the clean substrate in a subsequent electrolytic solution to form a subsequent oxide layer on areas of the substrate exposed by the membrane by anodizing.
a method of forming multicolor aluminum alloy in accordance with the present invention comprises steps of preparing, surface treating, forming, processing and reprocessing.
the step of preparing comprises acts of providing an aluminum alloy substrate having an external surface, machining the substrate to form a shaped substrate by a Computer Numerical Control (CNC) machine with coolant and oil, removing the coolant and oil from the external surface with sodium hydroxide and cleaning the shaped substrate with water, thereby removing impurities from the external surface of the substrate to provide a clean external surface.
CNC Computer Numerical Control
the step of surface treatment comprises disposing the substrate with clean external surface in a base electrolytic solution to form a colored oxide layer on the substrate by an anodizing surface treatment, removing the substrate from the base electrolytic solution after forming the base oxide layer on the external surface of the substrate and drying to form a colored substrate.
the step of forming comprises forming a membrane on the colored oxide layer made from a transparent acid-proof insulated plastic material, such as plastic, rubber or ceramic layer.
the step of processing comprises processing the substrate to remove at least one local area of membrane and corresponding local area of colored oxide layer from the external surface of the colored substrate with coolant and oil using the CNC machine, removing the coolant and oil from the colored substrate using sodium hydroxide and cleaning the external surface of the substrate with water, thereby removing impurities from and providing and clean colored substrate.
the step of reprocessing comprises disposing the substrate in a subsequent electrolytic solution to form a subsequent oxide layer on the external surface of the substrate exposed by the membrane, and removing the substrate from the subsequent electrolytic solution after forming the subsequent oxide layer on the external surface of the substrate and drying to add a color to the colored oxide layer.
the coolant and oil in subsequent steps do not adhere to the colored oxide layer so is cleaned easily.
the local membrane on the local colored oxide is removed, the local colored oxide is fully replaced by the oxide layer so bleeding does not occur and damage to the oxide layer is replaced with the colored layer. Therefore, a preferred color quality is achieved.

Landscapes

Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
Chemical Kinetics & Catalysis (AREA)
Electrochemistry (AREA)
Materials Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Other Surface Treatments For Metallic Materials (AREA)
Chemical Treatment Of Metals (AREA)
Laminated Bodies (AREA)
Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Forging (AREA)

EP09168633A 2008-10-20 2009-08-25 Verfahren zum Bilden einer mehrfarbigen Aluminiumlegierung Active EP2177647B1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
TW097140159A TW201016891A (en)	2008-10-20	2008-10-20	Anode multi-color surface treatment method for aluminum alloy

Publications (2)

Publication Number	Publication Date
EP2177647A1 true EP2177647A1 (de)	2010-04-21
EP2177647B1 EP2177647B1 (de)	2011-03-23

Family

ID=41633927

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP09168633A Active EP2177647B1 (de)	2008-10-20	2009-08-25	Verfahren zum Bilden einer mehrfarbigen Aluminiumlegierung

Country Status (4)

Country	Link
EP (1)	EP2177647B1 (de)
AT (1)	ATE503042T1 (de)
DE (1)	DE602009000954D1 (de)
TW (1)	TW201016891A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN103498177A (zh) *	2013-09-24	2014-01-08	昆山凯诺尔金属制品有限公司	一种轻金属制品多种阳极化表面的加工方法
CN103556185A (zh) *	2013-11-20	2014-02-05	沈阳工业大学	电解铝阳极棒清理装置
GB2567505A (en) *	2017-02-10	2019-04-17	Multitechnic Ltd	Aluminium panels
US11505875B2 (en)	2019-05-21	2022-11-22	Bang & Olufsen A/S	Method of providing a coloured, anodised aluminium surface

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US8968548B2 (en)	2012-05-12	2015-03-03	Catcher Technology Co., Ltd.	Method of forming multicolor surface

Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5867893A (ja) *	1981-10-16	1983-04-22	Tateyama Alum Kogyo Kk	アルミニウムまたはアルミニウム合金の模様着色法
JPS58110694A (ja) *	1981-12-23	1983-07-01	Katsushika Press Kogyosho:Kk	アルミニウム表面の複色処理方法
JPS6067691A (ja) *	1983-09-21	1985-04-18	Seiko Epson Corp	多着色時計ケ−スの製造方法
JPS6075599A (ja) *	1983-09-30	1985-04-27	Nippon Denso Co Ltd	陽極酸化皮膜の多色模様形成法
RU2072000C1 (ru) *	1993-08-23	1997-01-20	Институт химии Дальневосточного отделения РАН	Способ разноцветного окрашивания изделий из алюминия и его сплавов
US20050109623A1 (en) *	2003-09-10	2005-05-26	Bao Sheng Corporation	Multi-color anodizing processes

2008
- 2008-10-20 TW TW097140159A patent/TW201016891A/zh not_active IP Right Cessation
2009
- 2009-08-25 EP EP09168633A patent/EP2177647B1/de active Active
- 2009-08-25 DE DE602009000954T patent/DE602009000954D1/de active Active
- 2009-08-25 AT AT09168633T patent/ATE503042T1/de not_active IP Right Cessation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5867893A (ja) *	1981-10-16	1983-04-22	Tateyama Alum Kogyo Kk	アルミニウムまたはアルミニウム合金の模様着色法
JPS58110694A (ja) *	1981-12-23	1983-07-01	Katsushika Press Kogyosho:Kk	アルミニウム表面の複色処理方法
JPS6067691A (ja) *	1983-09-21	1985-04-18	Seiko Epson Corp	多着色時計ケ−スの製造方法
JPS6075599A (ja) *	1983-09-30	1985-04-27	Nippon Denso Co Ltd	陽極酸化皮膜の多色模様形成法
RU2072000C1 (ru) *	1993-08-23	1997-01-20	Институт химии Дальневосточного отделения РАН	Способ разноцветного окрашивания изделий из алюминия и его сплавов
US20050109623A1 (en) *	2003-09-10	2005-05-26	Bao Sheng Corporation	Multi-color anodizing processes

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN103498177A (zh) *	2013-09-24	2014-01-08	昆山凯诺尔金属制品有限公司	一种轻金属制品多种阳极化表面的加工方法
CN103556185A (zh) *	2013-11-20	2014-02-05	沈阳工业大学	电解铝阳极棒清理装置
CN103556185B (zh) *	2013-11-20	2016-05-04	沈阳工业大学	电解铝阳极棒清理装置
GB2567505A (en) *	2017-02-10	2019-04-17	Multitechnic Ltd	Aluminium panels
US11505875B2 (en)	2019-05-21	2022-11-22	Bang & Olufsen A/S	Method of providing a coloured, anodised aluminium surface

Also Published As

Publication number	Publication date
TWI338056B (de)	2011-03-01
ATE503042T1 (de)	2011-04-15
DE602009000954D1 (de)	2011-05-05
EP2177647B1 (de)	2011-03-23
TW201016891A (en)	2010-05-01

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