CN1040632A - Decorative electroplating technology with zinc alloy as base plating layer - Google Patents
Decorative electroplating technology with zinc alloy as base plating layer Download PDFInfo
- Publication number
- CN1040632A CN1040632A CN 89100436 CN89100436A CN1040632A CN 1040632 A CN1040632 A CN 1040632A CN 89100436 CN89100436 CN 89100436 CN 89100436 A CN89100436 A CN 89100436A CN 1040632 A CN1040632 A CN 1040632A
- Authority
- CN
- China
- Prior art keywords
- plating
- electroplating technology
- zinc
- chromium
- technology according
- 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.)
- Withdrawn
Links
Landscapes
- Electroplating And Plating Baths Therefor (AREA)
Abstract
The present invention relates to a kind of decorative electroplating technology with zinc alloy as base plating layer, be characterized in that with muriate light zinc-iron cobalt be prime coat, plate overlay coating again, as plate thin copper alloy and chromium plating.Its process stabilizing, luminance brightness is good, the erosion resistance height, leveling property is good, and plating bath is nontoxic, the current efficiency height.Because of having replaced expensive metallic nickel and chromium complex with zinc-iron and single salt, so cost reduces significantly, cost is than low 3.2 times of existing barrel nickel plating-chromium process, than low 1.3 times of barrel plating gunmetal-chromium.The present invention can be used for the plating of ornamental and protective coating.
Description
The invention belongs to the improvement of electroplating technology.
Smaller in the past mechanical component carry out ornamental and during protective chromium plating, and first barrel nickel plating or nickelalloy, copper or copper alloy be as prime coat, nickel plating then.Nickel and Rhometal, copper and copper alloy all belong to cathodic electrodeposition coating (for iron and steel), thicker coating can not guarantee not occur hole fully, under the atomospheric corrosion condition, always have a spot of hot spot, can manifest the iron rust of brown in these hot spots very soon, thereby cause the heavy corrosion of matrix.This technology not only protective is poor, and expends a large amount of valuable nickel, copper and chromium complex.Barrel plating one factory in Shanghai has tested pyrophosphate salt barrel plating zinc-iron cobalt-base alloy successfully, still, contains potassium pyrophosphate and auxiliary complex-former up to 400 grams per liters in the plating bath, price is also expensive, and plating bath viscosity is big, and poisonous, current efficiency is low, only be 70-75%, operational condition is strict, and is wayward, and the part luminance brightness is relatively poor in addition, fragility is serious, so applied.This technology only is used for light brass and the low coating of light barrel plating tin-cobalt alloy, is not applied on chrome-plated process.
The purpose of this invention is to provide a kind of new electroplating technology, its cost is low, and technology is easy to be easy to control, can save valuable metallic nickel and complex compound, reduce cost significantly, and the part corrosion resisting property is higher in addition.
Technical essential of the present invention is that the in addition part that at first will have the clean surface is electroplated (barrel plating or hang plating etc.) zinc-iron cobalt-base alloy prime coat, contain cobalt salt in its solution composition, (as CoCl4, CoSO4 etc.), ferrous salt is (as FeCl2, FeSO4 etc.), zinc salt (as ZnCl2, ZnSO4 etc.), muriate is (as NH4Cl, KCl, NaCl etc.), buffer reagent is (as boric acid, sodium-acetates etc.), stablizer is (as xitix, ammonium sulphite, hydrazonium sulfate etc.), brightening agent (add fork acetone and/or Sodium Benzoate as the chloride galvanizing brightening agent, also can put ketone in order to virtue is main L-105 brightening agent etc.), negative electrode is other part, anode adopts zine plate and pure plate, plates overlay coating at last, as light brass, the zinc-plated cobalt-base alloy of light, or the thin copper alloy of plating, chromium plating etc. again.
Its prime coat solution composition (unit: grams per liter) can contain zinc chloride 40-100, iron protochloride 20-80, ammonium chloride 120-220, cobalt chloride 1-10, boric acid 10-40, xitix 0.5-3, L-105 lacquer 4-6(can be commercially available).Service temperature is 5-40 ℃, current density 〉=30A/ bucket, time 〉=30 minute.Contain zinc chloride 60-80 in the above-mentioned optimal components, iron protochloride 30-50, ammonium chloride 160-180, boric acid 20-30, L-105 brightening agent 4-6, xitix 1-2.In order to make luminance brightness etc. better, preferably add Triammonium citrate 0.3-3 grams per liter in the composition.Simultaneously, this PH is adjusted into 4.5-5.5.
When being applied to chrome-plated process, can on the prime coat basis, plate the thin copper alloy of one deck (barrel plating or hang plating) earlier, last chromium plating (barrel plating or hang plating).Effective in order to make, the solution composition of thin copper alloy preferably contains (unit: grams per liter): cuprous cyanide 10-40, zinc oxide 1-6, sodium stannate 5-20, sodium cyanide 5-30, cyanogen sodium oxide 2-12, Seignette salt 10-60, current density 〉=30A/ bucket, time 〉=30 minute, service temperature 5-40 ℃.Be preferably the cuprous 15-20 of hydrogenation, zinc oxide 2-3, sodium stannate 10-15, sodium cyanide 10-15, cyanogen sodium oxide 5-8, Seignette salt 20-25.
The present invention compared with prior art, process stabilizing is simple and easy, plating bath is nontoxic, viscosity is little, current efficiency is high, the coating luminance brightness is good, fine and close, good corrosion resistance, especially expensive metallic nickel and chromium complex have been replaced with zinc-iron and first salt, cost is reduced significantly, cost is than low 3.2 times of existing barrel nickel plating-chromium process, and than low 1.3 times of barrel plating gunmetal-chromium, the present invention can be used on the electroplating technology of ornamental and protective coating.
Embodiment:
1, adopts this processes bicycle bell part, with blank tumbling 2 hours in the drum that is added with alkaline degreasing liquid, after the cleaning, soaked hydrochloric acid 2-4 minute, pack into after cleaning up in drum barrel plating light zinc-iron cobalt-base alloy 2 hours, the flowing water flushing, thin copper alloy 0.5-1 hour of barrel plating hangs chromium plating then.Our factory adopts this technology to produce the export trade of nearly 10T bicycle bell part.
2, part hardware parts such as zero diopter pad, plum blossom pad, screw are after tumbling is handled, and barrel plating zinc-iron cobalt-base alloy 1.5-2 hour barrel plating copper alloy 0.5-1 hour then, has behind the barrel plating chromium and the same good surface appearance of former barrel nickel plating chromium process again.Antirust ability improves greatly after tested, reduces cost 3.5 times.
3, adopt the product of this processes, as paper clip, through pre-process and post-process, barrel plating tin ferrocobalt 1 hour, barrel plating white potin 0.5 hour (Dai Ge) again, outward appearance is very bright attractive in appearance.The high tin of comparable barrel plating reduces cost 30%.
Below be several performance index contrasts:
(1), brine soaking experiment.The saline soak condition: soaked 8 hours in 40 ℃ the 5% MaCl aqueous solution, the taking-up back is hung on indoor without cleaning, and thickness of coating is 15 μ m.
Dissimilar coating brine soaking experiment results:
(2), salt-fog test neutral salt spray test.Test method and standard are according to the Machinery Ministry standard laid down by the ministries or commissions of the Central Government.Test conditions: 50 ± 1g/1NaCl solution, PH=6.5-7.2, T=35 ± 2 ℃, the 8 hours static room temperatures of spraying continuously were one-period in 16 hours.
(3), alloy layer combining power test
Sample: 40 * 50 * 1mm low-carbon (LC) steel disc, coating total thickness are 50 μ m, and alternating bending is until fracture, the aliquation phenomenon of not peeling.Get same test piece and in 200 ℃ of baking ovens, be incubated 1 hour, take out the back and in cold water, cool off, do not have the bubbling and peeling phenomenon.
(4), save energy, boost productivity.
| Liquid nickel plating (hr) | Liquid bronze (copper-tin alloy) electroplating (hr) | Liquid galvanized iron cobalt one copper alloy (hr) |
| 6 | 7 | 2.5 |
By boosting productivity more than one times as can be seen in the table.
Claims (8)
1, a kind of electroplating technology, it is characterized in that at first will having the part electrogalvanized iron cobalt-base alloy prime coat of clean surface, contain cobalt salt, ferrous salt, zinc salt, muriate, buffer reagent in its solution composition, stablizer and brightening agent, negative electrode is a part, anode adopts zine plate and pure iron plate, plates overlay coating at last.
2, electroplating technology according to claim 1 is characterized in that said brightening agent is with fragrance
Ketone is the L-105 brightening agent of main body.
3, electroplating technology according to claim 2, it is characterized in that the prime coat solution composition contains (unit: zinc chloride 40-100 grams per liter), iron protochloride 20-80, ammonium chloride 120-220, cobalt chloride 1-10, boric acid 10-40, xitix 0.5-3, L-105 brightening agent 4-6, service temperature 5-40 ℃, current density 〉=30A/ bucket, time 〉=30 minute.
4, electroplating technology according to claim 3 is characterized in that prime coat solution composition (unit: grams per liter) contain: zinc chloride 60-80, iron protochloride 30-50, ammonium chloride 160-180, boric acid 20-30, L-105 brightening agent 4-6, xitix 1-2.
5, electroplating technology according to claim 3 is characterized in that containing Triammonium citrate 0.3-3 grams per liter in the prime coat solution composition, and making PH is 4.5-5.5.
6,, it is characterized in that described overlay coating is thin copper alloy, chromium plating again of plating earlier according to claim 1,2,3,4 or 5 described electroplating technologies.
7, electroplating technology according to claim 6 is characterized in that the chromium plating composition (unit: grams per liter) contain: cuprous cyanide 10-40, zinc oxide 1-6 of thin copper alloy, sodium stannate 5-20, sodium cyanide 5-30, sodium hydroxide 2-12, Seignette salt 10-60, service temperature 5-40 ℃.
8, electroplating technology according to claim 7 is characterized in that the solution composition (unit: grams per liter) contain: cuprous cyanide 15-20, zinc oxide 2-3 of thin copper alloy, sodium stannate 10-15, sodium cyanide 10-15, sodium hydroxide 5-8, Seignette salt 20-25, service temperature 5-40 ℃
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89100436 CN1016079B (en) | 1989-01-22 | 1989-01-22 | Decorative electroplating technology with zinc alloy as base plating layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89100436 CN1016079B (en) | 1989-01-22 | 1989-01-22 | Decorative electroplating technology with zinc alloy as base plating layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1040632A true CN1040632A (en) | 1990-03-21 |
| CN1016079B CN1016079B (en) | 1992-04-01 |
Family
ID=4853863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89100436 Expired CN1016079B (en) | 1989-01-22 | 1989-01-22 | Decorative electroplating technology with zinc alloy as base plating layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1016079B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047038A (en) * | 2014-06-30 | 2014-09-17 | 句容市博远电子有限公司 | Nickel-chromium-copper-cobalt alloy electroplating solution and preparation method thereof |
| CN108950627A (en) * | 2018-07-11 | 2018-12-07 | 深圳市美之高科技股份有限公司 | A kind of chloride galvanizing+tin cobalt zinc ternary alloy is for chromium process method |
-
1989
- 1989-01-22 CN CN 89100436 patent/CN1016079B/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047038A (en) * | 2014-06-30 | 2014-09-17 | 句容市博远电子有限公司 | Nickel-chromium-copper-cobalt alloy electroplating solution and preparation method thereof |
| CN104047038B (en) * | 2014-06-30 | 2016-09-14 | 句容市博远电子有限公司 | A kind of nickel chromium triangle copper-cobalt alloy electroplate liquid and compound method thereof |
| CN108950627A (en) * | 2018-07-11 | 2018-12-07 | 深圳市美之高科技股份有限公司 | A kind of chloride galvanizing+tin cobalt zinc ternary alloy is for chromium process method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1016079B (en) | 1992-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4581110A (en) | Method for electroplating a zinc-iron alloy from an alkaline bath | |
| CN102206842A (en) | Manufacturing method of zinc/tin double-layer electroplated steel plate | |
| Verberne | Zinc-cobalt alloy electrodeposition | |
| CN109137016A (en) | A kind of alkalinity graphene Zn-Fe alloy electroplating liquid, preparation method and electroplating technology | |
| CN101899664B (en) | Electroplating method | |
| JPS6314890A (en) | Decorative galvanized steel sheet and its production | |
| US4610937A (en) | Product of and process for preparing Zn-Ni-alloy-electroplated steel sheets excellent in corrosion resistance | |
| CN1040632A (en) | Decorative electroplating technology with zinc alloy as base plating layer | |
| CN218642831U (en) | Coating structure of black tin-nickel alloy of aluminum alloy piece plating gun | |
| JPS5811795A (en) | Surface treated steel material which is excellent in corrosion resistance and water resistant adhesive property after coating | |
| US4268364A (en) | Nickel-zinc alloy deposition from a sulfamate bath | |
| US5810992A (en) | Electroplating of iron-cobalt alloy onto aluminum alloy parts | |
| CN100580142C (en) | Method for electrically plating Ti-Cu-Zn ternary alloy meeting three-prevention demand | |
| CN204982090U (en) | Plating layer structure with high corrosion resistance and decorative | |
| CN101550573A (en) | Zinc-nickel alloy electrolyte | |
| CN207918993U (en) | A kind of imitative golden composite plating layer structure of bright Zn-Ni alloy, high tin copper-tin alloy, ormolu | |
| CN219117589U (en) | Plating layer structure for nickel plating, wire drawing and trivalent chromium plating of copper alloy piece | |
| CN207210557U (en) | A kind of high corrosion-resistant gun barrel RIFLE composite plating layer structure | |
| CN220450333U (en) | Plating layer structure of tin-plated cobalt alloy chromium substitution | |
| CN220503233U (en) | Chromium-substituted plating layer of aluminum alloy tin-cobalt alloy | |
| CN219586209U (en) | Plating layer structure of zinc alloy die casting gold-plated palladium alloy | |
| CN221094324U (en) | Coating structure for hanging-plating imitation gold | |
| CN201850321U (en) | Non-cyanogen alkaline zinc plating composite layer of computer case | |
| CN219432213U (en) | Hot dip galvanized iron piece with protective layer | |
| CN215481341U (en) | Coating structure for plating pearl gold on copper alloy ornament |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |