CN103320791A - Method for electroplating aluminum alloy automobile hub - Google Patents
Method for electroplating aluminum alloy automobile hub Download PDFInfo
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- CN103320791A CN103320791A CN2013102653987A CN201310265398A CN103320791A CN 103320791 A CN103320791 A CN 103320791A CN 2013102653987 A CN2013102653987 A CN 2013102653987A CN 201310265398 A CN201310265398 A CN 201310265398A CN 103320791 A CN103320791 A CN 103320791A
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Abstract
The invention relates to a method for electroplating an aluminum alloy automobile hub. The method comprises the following steps of: pretreatment, surface activation, spraying, curing, nickel plating pretreatment, primary nickel plating, secondary nickel plating and vacuum chromium plating. The method for electroplating the aluminum alloy automobile hub, is simple in process and equipment, lower in energy consumption and capable of remarkably reducing the production cost; the secondary nickel plating is adopted, and vacuum chromium plating is realized at the outmost layer through vacuum negative arc ion chromium plating, so that a coating film is more uniform and attractive as well as bright and level in appearance and higher in adhesive force, and the surface texture as well as the wear resistance and corrosion resistance of the aluminum alloy automobile hub in various harsh environments are improved.
Description
Technical field
The invention belongs to electroplating technology, be specifically related to a kind of electro-plating method of aluminium alloy automobile hub.
Background technology
Aluminium alloy wheel hub especially has widespread use in a lot of fields in automobile and motorcycle production.General car all uses the wheel hub of aluminum alloy material, not only has preferably driving safety, by at its electroplating surface last layer or multiple layer metal plated film, can further increase overall aesthetics simultaneously.For many years, the production technology of electricity of wet process alloy plating wheel hub is comparatively ripe, but has all the time but that operation is many, complex process, energy consumption are large, a large amount of noble metals of employing cause the problems such as cost is higher.Therefore, traditional aluminium alloy wheel hub electro-plating method has been difficult to satisfy that people increase day by day to the requirement of environment, energy-conservation, water saving, need to develop a kind of environmental pollution still less, energy consumption is lower, technical process is simplified more low-cost aluminium alloy wheel hub electroplating technology.
Summary of the invention
One object of the present invention is to provide a kind of electro-plating method of aluminium alloy automobile hub, it has adopted secondary nickel plating and has adopted vacuum cathode arc ion plating chromium to carry out vacuum chromium-coated at outermost layer, make plated film more evenly attractive in appearance, light is smooth, sticking power is better, has improved surperficial texture and wear resistance and the erosion resistance under various harsh environment of aluminium alloy wheel hub.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of electro-plating method of aluminium alloy automobile hub comprises following steps:
(1) pre-treatment: aluminium alloy wheel hub is polished except immersing 10-15min in the 45-55 ℃ of alkaline degreaser after the deburring;
(2) surface active: pretreated aluminium alloy wheel hub is immersed 5-10min in the phosphoric acid;
(3) spraying is solidified: adopt electrostatic spraying at surface spraying one deck epoxy polyester powder of aluminium alloy wheel hub;
(4) nickel plating pre-treatment: aluminium alloy wheel hub is ground, immerse 5min in the alkaline degreaser after the polishing;
(a 5) nickel plating: aluminium alloy wheel hub is immersed the first nickel-plating liquid carry out nickel plating;
(6) secondary nickel plating: after the washing aluminium alloy wheel hub is immersed the second nickel-plating liquid and carry out nickel plating;
(7) vacuum chromium-coated: vacuum chromium-coated with adopting vacuum cathode arc ion plating chromium to carry out behind above-mentioned aluminium alloy wheel hub washing and the finish-drying, obtain product of the present invention.
Step (1) neutral and alkali degreaser is the mixture of the by volume 1:0.7 of 10% disodium phosphate soln and 15% sodium carbonate solution.
Phosphoric acid concentration is 15-25% in the step (2).
The coating thickness of epoxy polyester powder is 30-50um in the step (3).
Step (4) neutral and alkali degreaser is the mixture of the by volume 1:0.4 of 10% disodium phosphate soln and 15% sodium carbonate solution.
The first nickel-plating liquid is for being mixed by 30 parts of single nickel salts, 10 parts of nickelous chlorides, 5 parts of boric acid and 55 parts of water by weight in the step (5).
The second nickel-plating liquid is for being mixed by 45 parts of single nickel salts, 5 parts of nickelous chlorides, 5 parts of boric acid and 45 parts of water by weight in the step (6).
The invention has the beneficial effects as follows: the electro-plating method of aluminium alloy wheel hub of the present invention, technology and equipment is simple, and energy consumption is lower, can significantly reduce production costs; Adopt secondary nickel plating and adopted vacuum cathode arc ion plating chromium to carry out vacuum chromium-coated at outermost layer, make plated film more evenly attractive in appearance, light is smooth, and sticking power is better, has improved surperficial texture and wear resistance and the erosion resistance under various harsh environment of aluminium alloy wheel hub.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.
Embodiment 1
A kind of electro-plating method of aluminium alloy automobile hub comprises following steps:
(1) pre-treatment: aluminium alloy wheel hub is polished except immersing 10-15min in the 45-55 ℃ of alkaline degreaser after the deburring;
(2) surface active: pretreated aluminium alloy wheel hub is immersed 5-10min in the phosphoric acid;
(3) spraying is solidified: adopt electrostatic spraying at surface spraying one deck epoxy polyester powder of aluminium alloy wheel hub;
(4) nickel plating pre-treatment: aluminium alloy wheel hub is ground, immerse 5min in the alkaline degreaser after the polishing;
(a 5) nickel plating: aluminium alloy wheel hub is immersed the first nickel-plating liquid carry out nickel plating;
(6) secondary nickel plating: after the washing aluminium alloy wheel hub is immersed the second nickel-plating liquid and carry out nickel plating;
(7) vacuum chromium-coated: vacuum chromium-coated with adopting vacuum cathode arc ion plating chromium to carry out behind above-mentioned aluminium alloy wheel hub washing and the finish-drying, obtain product of the present invention.
Step (1) neutral and alkali degreaser is the mixture of the by volume 1:0.7 of 10% disodium phosphate soln and 15% sodium carbonate solution.
Phosphoric acid concentration is 15-25% in the step (2).
The coating thickness of epoxy polyester powder is 30-50um in the step (3).
Step (4) neutral and alkali degreaser is the mixture of the by volume 1:0.4 of 10% disodium phosphate soln and 15% sodium carbonate solution.
The first nickel-plating liquid is for being mixed by 30 parts of single nickel salts, 10 parts of nickelous chlorides, 5 parts of boric acid and 55 parts of water by weight in the step (5).
The second nickel-plating liquid is for being mixed by 45 parts of single nickel salts, 5 parts of nickelous chlorides, 5 parts of boric acid and 45 parts of water by weight in the step (6).
The electro-plating method of aluminium alloy wheel hub of the present invention, technology and equipment is simple, and energy consumption is lower, can significantly reduce production costs; Adopt secondary nickel plating and adopted vacuum cathode arc ion plating chromium to carry out vacuum chromium-coated at outermost layer, make plated film more evenly attractive in appearance, light is smooth, and sticking power is better, has improved surperficial texture and wear resistance and the erosion resistance under various harsh environment of aluminium alloy wheel hub.
Should be understood that these embodiment only to be used for explanation the present invention and be not used in and limit the scope of the invention.After the content of having read the present invention's instruction, those skilled in the art can do various conversion or modification to the present invention with any same or similar means, and these equivalent form of values fall within protection scope of the present invention equally.
Claims (7)
1. the electro-plating method of an aluminium alloy automobile hub is characterized in that comprising following steps:
(1) pre-treatment: aluminium alloy wheel hub is polished except immersing 10-15min in the 45-55 ℃ of alkaline degreaser after the deburring;
(2) surface active: pretreated aluminium alloy wheel hub is immersed 5-10min in the phosphoric acid;
(3) spraying is solidified: adopt electrostatic spraying at surface spraying one deck epoxy polyester powder of aluminium alloy wheel hub;
(4) nickel plating pre-treatment: aluminium alloy wheel hub is ground, immerse 5min in the alkaline degreaser after the polishing;
(a 5) nickel plating: aluminium alloy wheel hub is immersed the first nickel-plating liquid carry out nickel plating;
(6) secondary nickel plating: after the washing aluminium alloy wheel hub is immersed the second nickel-plating liquid and carry out nickel plating;
(7) vacuum chromium-coated: vacuum chromium-coated with adopting vacuum cathode arc ion plating chromium to carry out behind above-mentioned aluminium alloy wheel hub washing and the finish-drying, obtain product of the present invention.
2. method according to claim 1, it is characterized in that: described step (1) neutral and alkali degreaser is the mixture of the by volume 1:0.7 of 10% disodium phosphate soln and 15% sodium carbonate solution.
3. method according to claim 1 is characterized in that: phosphoric acid concentration is 15-25% in the described step (2).
4. method according to claim 1 is characterized in that: the coating thickness of epoxy polyester powder is 30-50um in the described step (3).
5. method according to claim 1, it is characterized in that: described step (4) neutral and alkali degreaser is the mixture of the by volume 1:0.4 of 10% disodium phosphate soln and 15% sodium carbonate solution.
6. method according to claim 1, it is characterized in that: the first nickel-plating liquid is for being mixed by 30 parts of single nickel salts, 10 parts of nickelous chlorides, 5 parts of boric acid and 55 parts of water by weight in the described step (5).
7. method according to claim 1, it is characterized in that: the second nickel-plating liquid is for being mixed by 45 parts of single nickel salts, 5 parts of nickelous chlorides, 5 parts of boric acid and 45 parts of water by weight in the described step (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102653987A CN103320791A (en) | 2013-06-27 | 2013-06-27 | Method for electroplating aluminum alloy automobile hub |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102653987A CN103320791A (en) | 2013-06-27 | 2013-06-27 | Method for electroplating aluminum alloy automobile hub |
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| CN103320791A true CN103320791A (en) | 2013-09-25 |
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| CN2013102653987A Pending CN103320791A (en) | 2013-06-27 | 2013-06-27 | Method for electroplating aluminum alloy automobile hub |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105369310A (en) * | 2014-08-15 | 2016-03-02 | 泰州市龙沟电镀有限公司 | An aluminum alloy hub electroplating process |
| CN105782269A (en) * | 2014-12-25 | 2016-07-20 | 舍弗勒技术股份两合公司 | Nickel plating process for clutch driven disc hub |
| CN110468395A (en) * | 2019-09-11 | 2019-11-19 | 泰州友润电子科技股份有限公司 | A kind of second level nickel plating technology based on chemical nickel plating alloy plate |
| CN111020496A (en) * | 2019-10-10 | 2020-04-17 | 昆山金百辰金属科技有限公司 | Process for plating aluminum-chromium alloy on surface of hub |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844480A (en) * | 2006-03-30 | 2006-10-11 | 葛炳灶 | Method for electroplating aluminium alloy products |
| CN101555611A (en) * | 2009-05-04 | 2009-10-14 | 长春工业大学 | Method for electroplating nickel on surface of magnesium alloy |
| CN102381134A (en) * | 2011-09-23 | 2012-03-21 | 湖州金泰科技股份有限公司 | Aluminum alloy hub product |
| CN202242780U (en) * | 2011-09-23 | 2012-05-30 | 湖州金泰科技股份有限公司 | Aluminum alloy hub product |
-
2013
- 2013-06-27 CN CN2013102653987A patent/CN103320791A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844480A (en) * | 2006-03-30 | 2006-10-11 | 葛炳灶 | Method for electroplating aluminium alloy products |
| CN101555611A (en) * | 2009-05-04 | 2009-10-14 | 长春工业大学 | Method for electroplating nickel on surface of magnesium alloy |
| CN102381134A (en) * | 2011-09-23 | 2012-03-21 | 湖州金泰科技股份有限公司 | Aluminum alloy hub product |
| CN202242780U (en) * | 2011-09-23 | 2012-05-30 | 湖州金泰科技股份有限公司 | Aluminum alloy hub product |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105369310A (en) * | 2014-08-15 | 2016-03-02 | 泰州市龙沟电镀有限公司 | An aluminum alloy hub electroplating process |
| CN105782269A (en) * | 2014-12-25 | 2016-07-20 | 舍弗勒技术股份两合公司 | Nickel plating process for clutch driven disc hub |
| CN105782269B (en) * | 2014-12-25 | 2019-06-14 | 舍弗勒技术股份两合公司 | Nickel plating process for clutch driven disc hub |
| CN110468395A (en) * | 2019-09-11 | 2019-11-19 | 泰州友润电子科技股份有限公司 | A kind of second level nickel plating technology based on chemical nickel plating alloy plate |
| CN111020496A (en) * | 2019-10-10 | 2020-04-17 | 昆山金百辰金属科技有限公司 | Process for plating aluminum-chromium alloy on surface of hub |
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Application publication date: 20130925 |