CN102381134A - Aluminum alloy hub product - Google Patents
Aluminum alloy hub product Download PDFInfo
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- CN102381134A CN102381134A CN2011102860263A CN201110286026A CN102381134A CN 102381134 A CN102381134 A CN 102381134A CN 2011102860263 A CN2011102860263 A CN 2011102860263A CN 201110286026 A CN201110286026 A CN 201110286026A CN 102381134 A CN102381134 A CN 102381134A
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Abstract
The invention discloses an aluminum alloy hub product, which belongs to the technical field of surfaces and comprises an aluminum alloy substrate. A base coating, a nickel-plated layer, a nickel-plated chromium mixing layer, a chromium-plated layer and a top coating are sequentially arranged on the aluminum alloy substrate from top to bottom, and the base coating includes an epoxy polyester powder coating and a methyl methacrylate and acrylic acid copolymer coating sequentially from bottom to top. The aluminum alloy hub product is provided with the structure of 'the base coating/a composite vacuum coating (the nickel-plated layer/the nickel-plated chromium mixing layer/the chromium-plated layer)/the top coating, and has the advantages of environmental friendliness of production, low cost, firmness of films, fine compactness, high corrosion resistance and the like. In terms of appearance, the aluminum alloy hub product is more metallically glossy than a coating hub product.
Description
Technical field
The present invention relates to aluminium alloy wheel hub of vehicle sufacing field, be specifically related to a kind of aluminium alloy wheel hub goods.
Background technology
The energy, environment and safety are the three big problems that various countries, the world today very pay close attention to, and developing of automobile industry is popularized closely related with this three big problem with automotive applications.Along with energy-saving and cost-reducing require constantly surging of modern automobile, safety and environmental regulation are strict day by day, and the automobile weight-saving requires more urgent.Aluminum alloy is owing to have that light weight, intensity are high, formability is good, moderate, the percent recovery is high, has great significance to reducing automotive dead weight, reduce oil consumption, alleviate environmental pollution and improving operating characteristic etc., become the preferred material of auto-industry.
In order to improve reliability, the resistance to abrasion of aluminium alloy wheel hub under various environment, corrosion stability and improve its aesthetic property must be carried out surface of good and handled.Gained aluminium alloy wheel hub goods mainly are divided into the application aluminium alloy wheel hub and electroplate aluminium alloy wheel hub.Application aluminium alloy wheel hub goods lack gloss in appearance, and are difficult to be coated with out the aluminium alloy wheel hub of metallic luster or alloy look, and the aesthetic paces of the people that are out of step with the times are electroplated the aluminium alloy wheel hub goods gradually and replaced.The production technology of the aluminium alloy wheel hub of wet method plating for many years goods has become ripe, very high surface quality is arranged, but its production technology has very big injury to environment and human body, and the sexavalent chrome toxicity that especially generates is very big.The current electroplating alloy wheels products, production process: rough → test → degreasing → washing → wax finishing secondary washing → drying → → → washing → mounted pendant secondary alkaline etching → → washing → acid etching secondary cleaning → dip three yuan retreat plating layer plating layer → → washing → then dip three yuan secondary plating layer → secondary cleaning → (alkaline dipped plated copper) or pre-dull nickel plated → Recovery → washing → acid activation secondary → washing → copper plating → cleaning → pickling → activation → bright nickel chrome cleaning → activation → washing → → Recovery → secondary demolition hanging → washing → drying → Inspection packaging.There are many unsurmountable problems aborning in this plating wheel hub goods:
(1) contain a certain amount of hazardous and noxious substances, especially cyanide and sexavalent chrome in the electroplating effluent, need carry out the three wastes and handle, its complex disposal process, processing cost is high, and still can not stop environmental pollution completely;
(2) using the ternary coating layer is that " copper/nickel/chromium " layer needs to consume noble metals such as a large amount of copper, nickel, chromium;
(3) energy consumption is big, complex process, and production efficiency is low, and cost is high, and working condition is relatively poor, to the workman is healthy certain influence is arranged.
Therefore though existing plating aluminium alloy wheel hub goods surface quality is very high, its production can not be satisfied environment, and is energy-conservation, requirements such as water saving.Therefore, do not contain sexavalent chrome when seeking a kind of production, environmental pollution is little, the plated film aluminium alloy wheel hub goods of low cost of manufacture have great importance.
The applicant discloses a kind of aluminium alloy wheel hub in patent CN201120829Y; It comprises alloy matrix aluminum, on alloy matrix aluminum, is coated with priming coat, vacuum coating and finishing coat from bottom to top successively, and vacuum coating comprises vacuum cathode arc ions chromium plating layer, magnetron sputtering aluminium coated from bottom to top successively; This aluminium alloy wheel hub coating surface quality and performance are suitable with the existing plating aluminium alloy wheel hub; And reduced the pollution to environment, energy-conservation, economize on water and improved labor condition, often corrosion stability is poor but we find the vacuum chromium-coated layer of this patent; And the coating density is relatively poor, and this maybe be because the chromium plating has porosity.
Summary of the invention
The present invention further improves and optimizates on the basis of foregoing invention; Purpose provides a kind of production environmental protection; Cost is low, and rete is firm, high compactness, high corrosion-resissatnt aluminium alloy wheel hub goods; The combination rate variance that this goods produce when adopting vacuum composite coating to overcome existing aluminium alloy wheel hub goods vacuum chromium-coated layer chromium plating, the shortcoming of not anti-corrosion, compactness difference.
Above-mentioned technical purpose of the present invention is achieved through following technical scheme: a kind of aluminium alloy wheel hub goods, comprise aluminum alloy base material, and it is characterized in that: it also comprises the vacuum composite coating; Said vacuum composite coating is made up of nickel coating, nickel plating chromium mixolimnion and chromium coating; Be followed successively by priming coat, nickel coating, nickel plating chromium mixolimnion, chromium coating and finishing coat on the said aluminum alloy base material from bottom to top; The thickness of said vacuum composite coating is 0.3 μ m～0.5 μ m.
Aluminium alloy wheel hub product surface plating of the present invention " priming coat/composite evacuated coating (nickel coating/nickel plating chromium mixolimnion/chromium coating)/finishing coat "; Use the vacuum composite coating to replace existing chromium coating, solved that the binding force of cladding material that porosity causes is poor, compactness is bad, the problem of corrosion stability difference because the chromium plating has.Both kept the lightweight characteristics of aluminum alloy, performance such as its rete is firm, compactness is high, lasting metallic luster and wear-resisting, damage resistant is superior to existing plated film aluminium alloy wheel hub goods.
As of the present invention preferred, said priming coat is followed successively by epoxy polyester powder coating, methyl methacrylate-acrylic acid copolymer coating from bottom to top.The selection of priming coat needs with aluminum alloy base material surface and vacuum composite coating the excellent contact performance is arranged all, and combines firmly not react each other, suitable hardness and toughness, and require to have higher resistance to effect of heat, transfer narrow-minded at vacuum state.After taking all factors into consideration; The present invention selects epoxy polyester powder coating, methyl methacrylate-acrylic acid copolymer coating as priming coat; Wherein the epoxy polyester powder in the epoxy polyester powder coating is a kind of powder thermosetting, and it combines firmly with the base material aluminum alloy, and cost is low; The resin that methyl methacrylate-acrylate layer uses polymethyl methacrylate resin and acrylic acid copolymer to form, it has good performance, transfers narrow-minded at vacuum state.Above-mentioned priming coat can apply through the flat spray-on process of static, because the too thin words of priming coat have pin hole easily, surface evenness is not enough, and too thick words are bubbled easily, and binding force is bad, comes off easily, so coating thickness is that 50 μ m ~ 70 μ m are more suitable.
As of the present invention preferred, also have the medium enamelled coating between said priming coat and the vacuum composite coating, the medium lacquer is a clear dope, is coated in body surface, dry back formation smooth film helps and the adhering to of composite evacuated coating.
As of the present invention preferred, said finishing coat is the transparent enamelled coating of acrylic ester-isocyanates.Have good bonding force between this finishing coat and the composite evacuated coating, and it has higher hardness, wear-resisting, corrosion resisting property, the vacuum composite coating is played decorate and protective effect.
Because the words surface plumpness that finishing coat is too thin is not enough, glossiness is also bad, and the too thick easy loss of gloss of words meeting is not easy oven dry, and hardness can reduce, so as of the present invention preferred, said finishing coat thickness is 8 μ m ~ 12 μ m.
Chromium is a kind of metal with silvery white gloss; Nontoxic, chemical property is very stable, and ductility is arranged; Hard and crisp when impure; It is one of important strategic goods and materials, owing to have characteristics such as matter is hard, wear-resisting, high temperature resistant, anticorrosive, in metallurgical industry, refractory material and chemical frbre industry, has obtained using widely.Vacuum chromium-coated layer is a kind of better protection-decorative coating, and the present invention selects the vacuum composite coating, and rete plating property is good.As of the present invention preferred, said vacuum composite coating is made up of magnetron sputtering nickel coating, magnetic controlled sputtering ion plating nickel chromium triangle mixolimnion and cathodic arc ion plating chromium layer.
In sum, the present invention compared with prior art has following outstanding advantage and beneficial effect:
1, aluminium alloy wheel hub goods of the present invention have the structure of " priming coat/composite evacuated coating (nickel coating/nickel plating chromium mixolimnion/chromium coating)/finishing coat "; Make to produce these goods have cost low, easy, pollute little, low power consumption and other advantages, its in-use performance is superior to aluminium alloy wheel hub goods in the market;
2, the nickel coating in priming coat of the present invention and base material and the composite chrome plating layer all has good adhesive ability, and composite evacuated coating makes whole vacuum-coating surface brilliant white, and the metal sense is strong;
3, finishing coat of the present invention is the transparent enamelled coating of acrylic ester-isocyanates, and this rete and metallic chromium layer tack are strong, and corrosion stability is good, and has good resistance to abrasion and hydrophobic, and metallic chromium layer is played a very good protection;
4, composite film of the present invention has the good binding rate, and the aluminium alloy wheel hub goods have good superficial hardness, resistance to abrasion, salt air corrosion property.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Among the figure: the 0th, aluminum alloy base material, the 1st, epoxy polyester powder coating, the 2nd, methyl methacrylate-acrylic acid copolymer coating, the 3rd, medium enamelled coating, the 4th, nickel coating, the 5th, nickel plating chromium mixolimnion, the 6th, chromium coating, the 7th, finishing coat.
The specific embodiment
Below in conjunction with embodiment the present invention is done further explain.
Embodiment 1
As shown in Figure 1, a kind of aluminium alloy wheel hub goods comprise aluminum alloy base material 0, and priming coat, vacuum composite coating and finishing coat 7 are followed successively by priming coat, nickel coating 4, nickel plating chromium mixolimnion 5, chromium coating 6 and finishing coat 7 from bottom to top on aluminum alloy base material 0; Wherein the thickness of vacuum composite coating is 0.3 μ m; Primer thickness is 50 μ m, is followed successively by epoxy polyester powder coating 1, methyl methacrylate-acrylic acid copolymer coating 2 from bottom to top through the electrostatic spraying spraying, between priming coat and vacuum composite coating, also has medium enamelled coating 3; Finishing coat 7 thickness are 8 μ m, spray into the transparent enamelled coating of acrylic ester-isocyanates through air spray finishing, and the vacuum composite coating is made up of magnetron sputtering nickel coating, magnetic controlled sputtering ion plating nickel chromium triangle mixolimnion and cathodic arc ion plating chromium layer.
Embodiment 2
As shown in Figure 1, a kind of aluminium alloy wheel hub goods comprise aluminum alloy base material 0, and priming coat, vacuum composite coating and finishing coat 7 are followed successively by priming coat, nickel coating 4, nickel plating chromium mixolimnion 5, chromium coating 6 and finishing coat 7 from bottom to top on aluminum alloy base material 0; Wherein the thickness of vacuum composite coating is 0.5 μ m; Primer thickness is 70 μ m, through the electrostatic spraying spraying, is followed successively by epoxy polyester powder coating 1, methyl methacrylate-acrylic acid copolymer coating 2 from bottom to top, between priming coat and vacuum composite coating, also has medium enamelled coating 3; Finishing coat 7 thickness are 12 μ m, spray into the transparent enamelled coating of acrylic ester-isocyanates through air spray finishing, and the vacuum composite coating is made up of magnetron sputtering nickel coating, magnetic controlled sputtering ion plating nickel chromium triangle mixolimnion and cathodic arc ion plating chromium layer.
Making of the foregoing description 1,2: simple polishing → oil removing → cleaning-drying → surface spraying and curing → vacuum coating → acrylic ester-spraying of isocyanates heat curing coating and curing according to following production technology; Wherein vacuum coating is in the vacuum apparatus that has vacuum cathode arc ion plating and two kinds of plated film modes of magnetron sputtering concurrently; Adopt first magnetron sputtering nickel plating to form nickel coating; Magnetron sputtering ion mixing nickel plating again, chromium form nickel plating chromium mixolimnion, form chromium coating with cathodic arc ion plating chromium at last.
Just made the aluminium alloy wheel hub goods of " priming coat/composite evacuated coating (nickel coating/nickel plating chromium mixolimnion/chromium coating)/finishing coat " structure through said method, its main performance is following:
(1) color and luster: brilliant white;
(2) pencil hardness: >=2H;
(3) adhesive ability (hundred lattice): 100%
(4) salt fog resistance (CASS test): >=240h;
(5) resistance to heat: 170 ℃/2h, coating does not have and comes off no height;
(6) temp. variation resistant performance: 85 ℃/1h →-20 ℃/30min is a circulation, and after 5 circulations, coating does not have and comes off no height.
Therefore, aluminium alloy wheel hub product surface brilliant white of the present invention, the metal sense is strong, has excellent Corrosion Protection, the superficial hardness of 2H at least, well wear-resisting, damage resistant, resistance to effect of heat and temperature-change resistance.
This specific embodiment only is to explanation of the present invention; It is not the restriction to invention; Those skilled in the art can make any modification to present embodiment as required after reading this specification sheets, but as long as in claim scope of the present invention, all receive the protection of patent law.
Claims (7)
1. aluminium alloy wheel hub goods comprise aluminum alloy base material, it is characterized in that: it also comprises the vacuum composite coating; Said vacuum composite coating is made up of nickel coating, nickel plating chromium mixolimnion and chromium coating; Be followed successively by priming coat, nickel coating, nickel plating chromium mixolimnion, chromium coating and finishing coat on the said aluminum alloy base material from bottom to top; The thickness of said vacuum composite coating is 0.3 μ m～0.5 μ m.
2. a kind of aluminium alloy wheel hub goods according to claim 1 is characterized in that: said priming coat is followed successively by epoxy polyester powder coating, methyl methacrylate-acrylic acid copolymer coating from bottom to top.
3. a kind of aluminium alloy wheel hub goods according to claim 2 is characterized in that: also have the medium enamelled coating between said priming coat and the vacuum composite coating.
4. a kind of aluminium alloy wheel hub goods according to claim 1 is characterized in that: the thickness of said priming coat is 50 μ m ~ 70 μ m.
5. a kind of aluminium alloy wheel hub goods according to claim 3 is characterized in that: said finishing coat is the transparent enamelled coating of acrylic ester-isocyanates.
6. a kind of aluminium alloy wheel hub goods according to claim 5 is characterized in that: said finishing coat thickness is 8 μ m ~ 12 μ m.
7. according to claim 1 or 2 or 3 or 4 or 5 or 6 described a kind of aluminium alloy wheel hub goods, it is characterized in that: said vacuum composite coating is by magnetron sputtering nickel coating, magnetic controlled sputtering ion plating nickel chromium triangle mixolimnion, cathodic arc ion plating chromium layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102860263A CN102381134A (en) | 2011-09-23 | 2011-09-23 | Aluminum alloy hub product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102860263A CN102381134A (en) | 2011-09-23 | 2011-09-23 | Aluminum alloy hub product |
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| CN102381134A true CN102381134A (en) | 2012-03-21 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103320791A (en) * | 2013-06-27 | 2013-09-25 | 开平市中铝实业有限公司 | Method for electroplating aluminum alloy automobile hub |
| CN105111487A (en) * | 2015-09-22 | 2015-12-02 | 太仓市金鹿电镀有限公司 | ABS film electroplating process for automobile electroformed label |
| CN108543687A (en) * | 2018-03-21 | 2018-09-18 | 中信戴卡股份有限公司 | A kind of high ductibility periodic variable alloy protecting film and forming method |
| CN110983231A (en) * | 2019-12-31 | 2020-04-10 | 中信戴卡股份有限公司 | Aluminum alloy hub and method for coating surface of aluminum alloy hub |
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| JPH06297901A (en) * | 1993-04-08 | 1994-10-25 | Hitachi Metals Ltd | Aluminum wheel |
| CN2760050Y (en) * | 2004-11-10 | 2006-02-22 | 迟福全 | Composite plating structure with electroless nickel plating and electroplating for aluminum and aluminum alloys |
| CN201120829Y (en) * | 2007-11-30 | 2008-09-24 | 湖州金泰镀业有限公司 | Aluminium alloy wheel hub |
| CN101343740A (en) * | 2007-11-30 | 2009-01-14 | 湖州金泰科技股份有限公司 | Film coating process for aluminium alloy wheel hub |
| CN101462158A (en) * | 2007-12-19 | 2009-06-24 | 本田技研工业株式会社 | Aluminum base part and manufacturing method |
| CN202242780U (en) * | 2011-09-23 | 2012-05-30 | 湖州金泰科技股份有限公司 | Aluminum alloy hub product |
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2011
- 2011-09-23 CN CN2011102860263A patent/CN102381134A/en active Pending
Patent Citations (6)
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|---|---|---|---|---|
| JPH06297901A (en) * | 1993-04-08 | 1994-10-25 | Hitachi Metals Ltd | Aluminum wheel |
| CN2760050Y (en) * | 2004-11-10 | 2006-02-22 | 迟福全 | Composite plating structure with electroless nickel plating and electroplating for aluminum and aluminum alloys |
| CN201120829Y (en) * | 2007-11-30 | 2008-09-24 | 湖州金泰镀业有限公司 | Aluminium alloy wheel hub |
| CN101343740A (en) * | 2007-11-30 | 2009-01-14 | 湖州金泰科技股份有限公司 | Film coating process for aluminium alloy wheel hub |
| CN101462158A (en) * | 2007-12-19 | 2009-06-24 | 本田技研工业株式会社 | Aluminum base part and manufacturing method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103320791A (en) * | 2013-06-27 | 2013-09-25 | 开平市中铝实业有限公司 | Method for electroplating aluminum alloy automobile hub |
| CN105111487A (en) * | 2015-09-22 | 2015-12-02 | 太仓市金鹿电镀有限公司 | ABS film electroplating process for automobile electroformed label |
| CN108543687A (en) * | 2018-03-21 | 2018-09-18 | 中信戴卡股份有限公司 | A kind of high ductibility periodic variable alloy protecting film and forming method |
| US11072853B2 (en) | 2018-03-21 | 2021-07-27 | Citic Dicastal Co., Ltd | High-ductility periodic variable alloy protective film and forming method thereof |
| CN110983231A (en) * | 2019-12-31 | 2020-04-10 | 中信戴卡股份有限公司 | Aluminum alloy hub and method for coating surface of aluminum alloy hub |
| KR20220057591A (en) * | 2019-12-31 | 2022-05-09 | 씨틱 디카스탈 컴퍼니 리미티드 | Aluminum alloy hub and its surface coating method |
| KR102662673B1 (en) | 2019-12-31 | 2024-05-03 | 씨틱 디카스탈 컴퍼니 리미티드 | Aluminum alloy hub and its surface coating method |
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Application publication date: 20120321 |