CN101798693A - New technology for plating golden yellow on automotive hub - Google Patents
New technology for plating golden yellow on automotive hub Download PDFInfo
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- CN101798693A CN101798693A CN201010102057A CN201010102057A CN101798693A CN 101798693 A CN101798693 A CN 101798693A CN 201010102057 A CN201010102057 A CN 201010102057A CN 201010102057 A CN201010102057 A CN 201010102057A CN 101798693 A CN101798693 A CN 101798693A
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Abstract
The invention discloses new technology for plating golden yellow on an automotive hub, which comprises the technical steps: galvanizing, pre-plating copper, brightly plating copper, plating nickel, plating golden yellow, and the like. The chemical composition formula contained in each L of plating solution is that: galvanizing solution comprises 220 to 240g of potassium chloride, 40 to 55g of zinc chloride, 30 to 35g of boric acid, and 15 to 25ml of brightener; copper pre-plating solution comprises 70 to 85g of copper phosphate, 280 to 350g of phosphor copper potassium, 4 to 6ml of ammonia water, and 3 to 5ml of brightener; the bright copper plating solution comprises 200 to 220g of copper sulfate, 70 to 90g of sulfuric acid, 0.06 to 0.08g of chloride ion, and 4 to 8ml of brightener; nickel plating solution comprises 260 to 300g of nickel sulfate, 30 to 50g of nickel chloride, 30 to 40g of boric acid, 0.6 to 1ml of brightener, 8 to 12ml of softening agent, and 2 to 4ml of wetting agent; and golden yellow plating solution comprises 120 to 140g of imitation gold salt and 2 to 4ml of ammonia water. After the plating, water washing and drying are performed, and a polyurethane paint is sprayed on the surface of the automotive hub. The new technology for plating golden yellow on the automotive hub radically eliminates the damage and environmental pollution of sodium cyanide and chromic anhydride to human bodies; the plated golden yellow automotive hub is luxurious and attractive, has strong corrosion resistance, and is suitable for high-class automotive assembly.
Description
Technical field
The present invention relates to electroplating technology, relate in particular to the electroplating technology of automotive hub.
Background technology
Along with the continuous development of automobile and the expansion of the market requirement, the automobile kind is increasing, and pattern is updated, and the surfacecti proteon of automotive hub is also being strengthened.With the car hub is example, mostly being aluminium alloy makes, the electroplating nickel on surface chromium coating, operational path for through blank polishing, oil removing, washing, pickling, soak zinc, move back zinc, secondary soaking zinc, pre-copper facing, acid copper-plating, nickel plating, chromium plating, washing, last hot blast drying, respectively once wash between each road processing step of chromium plating in pickling, wherein the nickel plating technology step is made up of half bright nickel plating, high-sulfur nickel plating, bright nickel plating, four processing steps of micropore nickel plating.The finished product outward appearance of making is chromium white, has good antiseptic property.But the production cost height of this technology, complex process adopt sodium cyanide in the strike copper plating technique step, and the chrome-plated process step adopts chromic anhydride, and these chemical element toxicity are very big, very easily environment polluted, and human body is worked the mischief.The chromium white wheel hub color that is plated to simultaneously is relatively more dull, changes little for many years.
Summary of the invention
Purpose of the present invention just provides a kind of aluminium alloy wheel hub of vehicle new process for electroplating, makes automotive hub more attractive in appearance, strengthens the coating protection performance, alleviates environmental pollution, increases economic efficiency.
Task of the present invention is finished like this: design a kind of new technology for plating golden yellow on automotive hub, be through polishing with the aluminium alloy automobile hub blank, oil removing, washing, pickling, washing, soak zinc, move back zinc, after the art breading of secondary soaking zinc, electroplate by electroplating assembly line, the electroplating technology process comprises zinc-plated, pre-copper facing, bright copper plating, nickel plating, each processing step of golden yellow plating, respectively once wash processing after each processing step, contained chemical ingredients prescription is respectively in proportion in every L plating bath of each processing step: the bent Repone K 220～240g of galvanizing flux, zinc chloride 40～55g, boric acid 30～35g, brightening agent 15～25ml adds the water preparation, pH value is 5～6, pre-copper plating bath is by cupric phosphate 70～85g, potassiumphosphate 280～350g, ammoniacal liquor 4～6ml, brightening agent 3～5ml adds the water preparation, pH value is 8～9, bright copper plating liquid is by copper sulfate 200～220g, sulfuric acid 70～90g, chlorion 0.06～0.08g, brightening agent 4～8ml adds the water preparation, pH value is 3.5～4.5, nickel-plating liquid is by single nickel salt 260～300g, nickelous chloride 30～50g, boric acid 30～40g, brightening agent 0.6～1ml, softening agent 8～12ml, wetting agent 2～4ml adds the water preparation, pH value is 4～4.8, golden yellow plating solution is by imitative golden salt 120～140g, ammoniacal liquor 2～4ml adds the water preparation, pH value is 9～10, handle through washing after the golden yellow plating processing step, dry then, at last the automobile wheel hub surface spraying polyurethane is coated with lacquer.The temperature of pre-copper plating bath is 45～55 ℃, and the temperature of bright copper plating liquid is 15～30 ℃, and the temperature of nickel-plating liquid is 50～60 ℃, and the temperature of golden yellow plating solution is 35～45 ℃.The zincincation step is 20～25 minutes, and the strike copper plating technique step is 5～8 minutes, and the bright copper plating processing step is 12～15 minutes, and the nickel plating technology step is 10～12 minutes, and the golden yellow plating processing step is 2～4 minutes.The anode of zincincation step is a zine plate, and strength of current is 1～3A/dm
2, the anode of strike copper plating technique step is the electrolysis copper coin, strength of current is 1～3A/dm
2, the anode of bright copper plating processing step is a phosphorus copper plate, strength of current is 1.5～2.5A/dm
2, the anode of nickel plating technology step is the nickel plate, strength of current is 2～5A/dm
2, the anode of golden yellow plating processing step is the copper zinc alloy plate, strength of current is 1.5～2.5A/dm
2The present invention adopts zinc-plated copper-plating technique more earlier, has changed the direct copper-plated mode of existing technology, and there is the problem of easily getting rusty in the coating pin hole that has solved the direct copper facing formation of existing technology, and has improved corrosion resisting property.Adopt non-cyanogen strike copper plating technique simultaneously, eliminated the pollution that sodium cyanide causes; Removed the chrome-plated process step, thoroughly stopped chromic anhydride, protected environment the harm that human body causes.It is golden yellow that automobile wheel hub surface after being plated to is, and outward appearance is luxurious, beautiful, attractive in appearance.
Test according to above-mentioned design, prove that processing step of the present invention and electroplate liquid formulation are rationally, effectively, significantly reduced pollution hazard, environmental protection, safe, easy to operate, the corrosion resistance nature of coating is strong, production cost reduces, successfully be plated to golden yellow automotive hub, elegant in appearance, increased the automotive hub new variety, obviously improve economic benefit, reached predetermined purpose preferably.
Embodiment
The invention will be further described below in conjunction with embodiment.
The plastic plating bath of some long 2m, wide 0.8m, dark 1.5m is formed electroplating assembly line.In degreasing tank, by tertiary sodium phosphate, yellow soda ash, Sodium phosphate dibasic, trisodium phosphate, metal cleaner add water and are mixed with degreasing fluid, and PH is 9～10, are heated to 60～80 ℃.After the aluminium alloy wheel hub of vehicle blank polished, immerse in the degreasing fluid and clean oil removing.After embathing 5～10 minutes, put into tank and wash, put into pickling tank again and add the pickle solution that water is prepared, soaked 0.5～1 minute, carry out pickling by nitric acid, hydrofluoric acid.Through after the washing, put into zinc bath and add the zincate solution that water is prepared again, soak and soaked zinc in 1 minute by sodium hydroxide, zinc oxide, iron trichloride, Seignette salt, SODIUMNITRATE.Then through washing, enter and move back moving back in the zinc liquid in the zinc groove and move back zinc, it is identical with the pickle solution compound method to move back zinc liquid.After washing, carry out 40 seconds of secondary soaking zinc again, after washing, enter the electroplating technology process again.Carry out zinc-platedly earlier, contain Repone K 220g, zinc chloride 45g, boric acid 30g, brightening agent 20ml in every L galvanizing flux, pH value is 5.8, and temperature is a normal temperature, and anode adopts 0# zine plate, strength of current 1.5A/dm
2, immersion plating 20 minutes.After washing, enter pre-copper plating groove, the pre-copper plating bath of every L contains cupric pyrophosphate 80g, potassium pyrophosphate 300g, ammoniacal liquor 4ml, brightening agent 3ml, and pH value is 8.5, and temperature is heated to 45～55 ℃, and anode is the electrolysis copper coin, strength of current 2A/dm
2, plated 5 minutes.After washing, enter the bright copper plating groove, every L bright copper plating liquid contains copper sulfate 200g, sulfuric acid 70g, chlorion 0.08g, brightening agent 6ml, and pH value is 4, and temperature is 15～30 ℃, and anode adopts phosphorus copper plate, strength of current 2.5A/dm
2, 12 minutes copper facing time.After washing, enter nickel bath, contain single nickel salt 260g, nickelous chloride 50g, boric acid 40g, brightening agent 1ml, softening agent 10ml, wetting agent 2ml in every L nickel-plating liquid, pH value is 4.5, temperature is heated to 50～60 ℃, and anode adopts 1# nickel plate, strength of current 2～5A/dm
2, 10 minutes nickel plating time.After washing, enter the golden yellow plating groove, contain imitative golden salt 120g, ammoniacal liquor 2ml in every L golden yellow plating solution, pH value is 9～10, and temperature is 35～45 ℃, and anode is the copper zinc alloy plate, strength of current 1.5～2.5A/dm
2, the golden yellow plating time is 3 minutes.Through after the washing, dry, last spraying polyurethane varnish dries again.
Through the golden yellow automotive hub that above-mentioned technological process is plated to, attractive in appearance, graceful, luxurious, style, it is supporting to be suitable for high-grade car, has improved economic benefit.Technological process has adopted the cyanide-free copper electroplating mode, removed the chrome-plated process step, has thoroughly eliminated the murder by poisoning of sodium cyanide, chromic anhydride and has polluted, and the coating Corrosion Protection is strong, Environmental Safety, and strong operability, production cost is low, is easy to apply.
Claims (4)
1. new technology for plating golden yellow on automotive hub, be through polishing with the aluminium alloy automobile hub blank, oil removing, washing, pickling, washing, soak zinc, move back zinc, after the art breading of secondary soaking zinc, electroplate by electroplating assembly line, it is zinc-plated to it is characterized in that the electroplating technology process comprises, pre-copper facing, bright copper plating, nickel plating, each processing step of golden yellow plating, respectively once wash processing after each processing step, contained chemical ingredients prescription is respectively in proportion in every L plating bath of each processing step: galvanizing flux is by Repone K 220～240g, zinc chloride 40～55g, boric acid 30～35g, brightening agent 15～25ml adds the water preparation, pH value is 5～6, pre-copper plating bath is by cupric phosphate 70～85g, potassiumphosphate 280～350g, ammoniacal liquor 4～6ml, brightening agent 3～5ml adds the water preparation, pH value is 8～9, bright copper plating liquid is by copper sulfate 200～220g, sulfuric acid 70～90g, chlorion 0.06～0.08g, brightening agent 4～8ml adds the water preparation, pH value is 3.5～4.5, nickel-plating liquid is by single nickel salt 260～300g, nickelous chloride 30～50g, boric acid 30～40g, brightening agent 0.6～1ml, softening agent 8～12ml, wetting agent 2～4ml adds the water preparation, pH value is 4～4.8, golden yellow plating solution is by imitative golden salt 120～140g, ammoniacal liquor 2～4ml adds the water preparation, pH value is 9～10, handle through washing after the golden yellow plating processing step, dry then, at last the automobile wheel hub surface spraying polyurethane is coated with lacquer.
2. according to the described new technology for plating golden yellow on automotive hub of claim 1, the temperature that it is characterized in that said pre-copper plating bath is 45～55 ℃, the temperature of bright copper plating liquid is 15～30 ℃, and the temperature of nickel-plating liquid is 50～60 ℃, and the temperature of golden yellow plating solution is 35～45 ℃.
3. according to the described new technology for plating golden yellow on automotive hub of claim 1, it is characterized in that said zincincation step is 20～25 minutes, the strike copper plating technique step is 5～8 minutes, the bright copper plating processing step is 12～15 minutes, the nickel plating technology step is 10～12 minutes, and the golden yellow plating processing step is 2～4 minutes.
4. according to the described new technology for plating golden yellow on automotive hub of claim 1, the anode that it is characterized in that said zincincation step is a zine plate, and strength of current is 1～3A/dm
2, the anode of strike copper plating technique step is the electrolysis copper coin, strength of current is 1～3A/dm
2, the anode of bright copper plating processing step is a phosphorus copper plate, strength of current is 1.5～2.5A/dm
2, the anode of nickel plating technology step is the nickel plate, strength of current is 2～5A/dm
2, the anode of golden yellow plating processing step is the copper zinc alloy plate, strength of current is 1.5～2.5A/dm
2
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| CN2010101020574A CN101798693B (en) | 2010-01-28 | 2010-01-28 | New technology for plating golden yellow on automotive hub |
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| CN2010101020574A CN101798693B (en) | 2010-01-28 | 2010-01-28 | New technology for plating golden yellow on automotive hub |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220612A (en) * | 2011-06-09 | 2011-10-19 | 陈慧杰 | Energy-saving and environment-friendly plating process |
| CN103866356A (en) * | 2012-12-11 | 2014-06-18 | 中国科学院过程工程研究所 | Method for non-cyanide imitation gold plating of Cu-Zn binary alloy |
| CN104060303A (en) * | 2014-06-25 | 2014-09-24 | 滨中元川金属制品（昆山）有限公司 | Salt-spray-resistant galvanizing technique |
| CN105177642A (en) * | 2015-10-30 | 2015-12-23 | 姜少群 | Electrochromism combined plating solution for aluminum alloy hub |
| CN105543917A (en) * | 2016-01-05 | 2016-05-04 | 张颖 | Double-bottoming electroplating method for nickel-plating magnesium alloy hub |
| CN108642537A (en) * | 2018-05-24 | 2018-10-12 | 上海凤凰自行车江苏有限公司 | A kind of bicycle seat pole method for anticorrosion treatment |
| CN110592627A (en) * | 2019-10-31 | 2019-12-20 | 四川轻化工大学 | Cyanide-free imitation gold electroplating solution and magnesium alloy electroplating process thereof |
| CN111996565A (en) * | 2020-07-17 | 2020-11-27 | 海安运城制版有限公司 | Novel electroplating process for prolonging service life of gravure |
| CN113814659A (en) * | 2021-09-15 | 2021-12-21 | 浙江牛钮电气有限公司 | Machining process of button switch shell and die-casting die thereof |
Families Citing this family (1)
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| CN104233418A (en) * | 2013-06-21 | 2014-12-24 | 镇江江城金属制品有限公司 | Method for electroplating metal sign |
-
2010
- 2010-01-28 CN CN2010101020574A patent/CN101798693B/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220612A (en) * | 2011-06-09 | 2011-10-19 | 陈慧杰 | Energy-saving and environment-friendly plating process |
| CN103866356A (en) * | 2012-12-11 | 2014-06-18 | 中国科学院过程工程研究所 | Method for non-cyanide imitation gold plating of Cu-Zn binary alloy |
| CN103866356B (en) * | 2012-12-11 | 2016-08-10 | 中国科学院过程工程研究所 | The method of non-cyanide imitating gold electroplating Cu-Zn bianry alloy |
| CN104060303A (en) * | 2014-06-25 | 2014-09-24 | 滨中元川金属制品（昆山）有限公司 | Salt-spray-resistant galvanizing technique |
| CN105177642A (en) * | 2015-10-30 | 2015-12-23 | 姜少群 | Electrochromism combined plating solution for aluminum alloy hub |
| CN105543917A (en) * | 2016-01-05 | 2016-05-04 | 张颖 | Double-bottoming electroplating method for nickel-plating magnesium alloy hub |
| CN108642537A (en) * | 2018-05-24 | 2018-10-12 | 上海凤凰自行车江苏有限公司 | A kind of bicycle seat pole method for anticorrosion treatment |
| CN110592627A (en) * | 2019-10-31 | 2019-12-20 | 四川轻化工大学 | Cyanide-free imitation gold electroplating solution and magnesium alloy electroplating process thereof |
| CN111996565A (en) * | 2020-07-17 | 2020-11-27 | 海安运城制版有限公司 | Novel electroplating process for prolonging service life of gravure |
| CN113814659A (en) * | 2021-09-15 | 2021-12-21 | 浙江牛钮电气有限公司 | Machining process of button switch shell and die-casting die thereof |
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| CN101798693B (en) | 2011-10-26 |
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