CN105463541A - Combined plating solution for plating decorative chrome on zinc die-casting alloy piece - Google Patents
Combined plating solution for plating decorative chrome on zinc die-casting alloy piece Download PDFInfo
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- CN105463541A CN105463541A CN201510980057.7A CN201510980057A CN105463541A CN 105463541 A CN105463541 A CN 105463541A CN 201510980057 A CN201510980057 A CN 201510980057A CN 105463541 A CN105463541 A CN 105463541A
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-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
- C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
- C25D5/14—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium two or more layers being of nickel or chromium, e.g. duplex or triplex layers
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/04—Electroplating: Baths therefor from solutions of chromium
- C25D3/06—Electroplating: Baths therefor from solutions of chromium from solutions of trivalent chromium
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/38—Electroplating: Baths therefor from solutions of copper
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
The invention discloses a combined plating solution for plating decorative chrome on a zinc die-casting alloy piece. The plating solution comprises a cyanide-free copper preplating solution, an acid copper plating solution, a semi-bright nickel plating solution, a high-sulfur-nickel electroplating solution, a bright nickel electroplating solution and a chrome electroplating solution. The six plating solutions are prepared and stored independently. During using, firstly, the electroplating solution used for cyanide-free copper pre-electroplating is subjected to bottoming of cyanide-free copper electroplating; then, a transition layer is coated by using the acid copper plating solution, the semi-bright nickel plating solution, the high-sulfur-nickel electroplating solution and the bright nickel electroplating solution sequentially; and finally, the chrome electroplating solution is used for conducting surface decorative chrome plating.
Description
Technical field
The present invention relates to field of electroplating, particularly a kind of zinc die casting alloys part decorative chromium plating associating plating solution.
Background technology
Because zinc alloy low price, fusing point are low, particularly extrusion process performance is good, has been widely used in and has manufactured hardware accessory, also can be used for manufacturing ornamental practical metalwork.As the badge etc. of various slide fastener, belt hook, case and bag accessory, vehicle nameplate and soldier.
Zinc alloy diecasting appearance is greyish white, and there is various defect on surface, as: slag inclusion, shrinkage cavity etc., therefore, in not surface treated situation, its usability and ornamental all non-constant.Common surface treatment method is plating.According to difference that is ornamental, Functional Requirement, electroplating technology has certain difference.As, have that appearance is gold-plated, silver-plated, chromium plating, plating rifle look etc. point.But regardless of the coating of appearance, the pre-electroplating method of zinc alloy diecasting is identical.So-called preplating, refers to the coating directly contacted with zinc alloy.Plating after preplating, will adopt diverse ways according to different demand.
The electroplating technology that zinc alloy diecasting is conventional is: 1. treatment before plating-cyanide electroplating preplating-tetra-sodium copper facing-acid copper-plating-bright nickel plating-gold-plated (silver-plated); 2. treatment before plating-neutral nickel plating preplating-tetra-sodium copper facing-acid copper-plating-bright nickel plating-gold-plated (silver-plated).
Cyanide electroplating pre-metallization solution is containing cuprous cyanide 30g/L, sodium cyanide 33g/L.Cyanide copper plating process stable performance, easy and simple to handle, but owing to employing a large amount of prussiate, all there is very strict requirement to the process of the plating three wastes, explained hereafter management.Again due in recent years; the zinc alloy diecasting surface-treated development relevant to cyanide copper plating process is very rapid; make to electroplate containing cyanogen the environmental pollution brought in rising trend, therefore, existing cyanide copper plating process can not meet the requirement of industrial development and environment protection.Particularly State Economic and Trade Commission promulgated the 32nd command last year, included one of backward technique must forcing for 2003 to eliminate in by containing cyanogen plating.The alternative techniques finding cyanide electroplating has been not only a technical problem.
Neutral nickel preplating is mainly used in the rack plating process of zinc alloy diecasting, and the main component of plating solution is NiSO
4, Trisodium Citrate etc., containing prussiate, but the bonding force of nickel layer and matrix can not show a candle to the performance of cyanide electroplating preplating, and conforming product rate is low.And due to the activation capacity of neutral nickel-plating liquid to zinc alloy diecasting poor, also have higher requirement to its pre-treatment.Neutral nickel plating technology generally can not be used for the barrel plating of zinc alloy diecasting, and therefore, range of application is not industrially very extensive.In addition, the solution cost of neutral nickel plating is higher, and wastewater treatment difficulty, limits its large-scale application industrially.
Other zinc alloy diecasting pre-plating process also have electroless copper, HEDP copper facing, gunmetal plating etc., all fail to obtain practical application in the industry because of problems such as bonding force, cost, wastewater treatments.
Summary of the invention
For the deficiencies in the prior art, an object of the present invention is to provide a kind of zinc die casting alloys part decorative chromium plating to combine plating solution, adopt this plating solution plating solution, environmental pollution is few, bonding force between base material and coating is high, and corrosion resistance of coating is high, and coating surface light is attractive in appearance, be suitable for being used as ornament, the plating of artwork etc.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of zinc die casting alloys part decorative chromium plating associating plating solution, described plating solution comprises non-cyanide pre-plating copper electrolyte, acid copper-plating plating solution, half bright nickel plating plating solution, plating high-sulfur nickel plating bath, electroplating bright nickel plating bath and electrodeposited chromium plating solution; Six kinds of plating solutions configure respectively, deposit, during use, first use and carry out non-cyanide copper electroplating bottoming without cyanogen pre-galvanized copper electroplate liquid, then use acid copper-plating plating solution, half bright nickel plating plating solution, plating high-sulfur nickel plating bath, electroplating bright nickel plating bath plating transition layer respectively successively, finally use electrodeposited chromium plating solution to carry out decorative surface chromium plating;
Wherein the composition of non-cyanide pre-plating copper electrolyte is: cupric pyrophosphate 80-90g/L, trisodium phosphate 140-150g/L, trisodium citrate 200-220g/L, Seignette salt 36-40g/L, HEDP15-17g/L, quadrol 160-180g/L; Bifluoride hydrogen ammonium 5-8g/L; Sodium Fluoride 2-3g/L, lithium fluoride 6-8g/L; Ammoniacal liquor adjust ph 8.5-9.5;
Wherein the composition of acid copper-plating plating solution is: copper sulfate (CuSO
45H
2o) 300-320g/L, sulfuric acid (ρ=1.84g/l) 20-22mL/L, chlorion 65-75mg/L, fill and lead up agent 0.7-0.9mL/L, open cylinder agent 3-6mL/L, brightening agent 0.2-0.3mL/L;
Wherein the composition of half bright nickel plating plating solution is: nickel single nickel salt (NiSO
46H
2o) 230-240g/L, nickelous chloride (NiCl
26H
2o) 55-65g/L, H
3bO
338-50g/L, open cylinder agent 3-6mL/L, fill and lead up agent 0.8-1.0mL/L, pH:3.6-4.0;
The composition wherein electroplating high-sulfur nickel plating bath is: single nickel salt (NiSO
46H
2o) 210-230g/L, nickelous chloride (NiCl
26H
2o) 45-55g/L, H
3bO
335-40g/L, wetting agent 1-5mL/L, pH2.8-3.0;
Wherein the composition of electroplating bright nickel plating bath is: single nickel salt (NiSO
46H
2o) 220-240g/L, nickelous chloride (NiCl
26H
2o) 42-44g/L, H
3bO
345-55g/L, key light agent 0.6-0.8mL/L, softening agent 6-8mL/L, auxiliary 5-7mL/L, wetting agent 1.0-1.2mL/L, pH4.0-4.2;
Wherein the composition of the plating solution of electrodeposited chromium is: chromic anhydride 270-290g/L, sulfuric acid (ρ=1.84g/l) 1.0-1.2g/L, trivalent chromium 1.5-3.0g/L, appropriate additive.
Before use the present invention combines plating solution plating, need carry out oil removing grease removal, acid pickling and rust removing, activation treatment to the surface of zinc die casting alloys part, processing mode can adopt ordinary method to carry out.
Preferably, when adopting associating plating solution of the present invention, adopt following plating technic condition respectively:
Non-cyanide pre-plating copper: electroplating technology is cathode current density: initial current density 2-7A/dm
2, time 6-8min; Working current density 1.5-2.5A/dm
2, time 10-12min;
Acid copper-plating: temperature 32-36 DEG C; Cathode current density 2-5A/dm
2, anodic current density 1.5-2.5A/dm
2; Pneumatic blending; Continuous filtration; Plating bath time 14-16min;
Plating semi-bright nickel: temperature: 72-74 DEG C, pH:3.6-4.0, cathode current density: 3-5A/dm
2inflating stirring, continuous filtration; Plating bath time 20-30min;
Plating high-sulfur nickel: temperature 30-40 DEG C, pH2.8-3.0, cathode current density 3.5-3.7A/dm
2; Mechanical stirring, continuous filtration; Plating bath time 1.5-2min;
Bright Nickel Electroplating: temperature 48-52 DEG C, pH4.0-4.2, cathode current density 4-6A/dm
2, inflating stirring, continuous filtration; Plating bath time 25-35min;
Electrodeposited chromium: temperature 42-44 DEG C, cathode current density 12-14A/dm
2; Plating bath time 2-5min.
Plating solution of the present invention is applicable to the chrome-faced process of 2#, 3#, 5# and 7# zinc alloy diecasting product.
Six kinds of plating solutions of the present invention are a kind of products, need conbined usage just can reach the desirable technique effect of the present invention, are used alone or coordinate other plating solutions to use to solve technical problem of the present invention, and reach corresponding technique effect.
Key improvements of the present invention and beneficial effect as follows:
1) cyanide-free copper electroplating plating solution of the present invention, avoid the consequence that cyanide electroplating bottoming causes environment to be heavily polluted, a kind of environmentfriendly products, by the adjustment of the component to cyanide-free copper electroplating prime coat plating solution, determine suitable solution composition, and determine respective content on the basis of great many of experiments, make each component coordinated, guarantee that the bonding force making prime coat and base material zinc alloy improves, for subsequent plating layer provides good basis.
2) for the plating solution improvement of prime coat and the plating requirement of upper layer, determine acid copper-plating, plating semi-bright nickel, plating high-sulfur nickel, the middle transition coating design that Bright Nickel Electroplating is such, and according to such design result, the Optimal improvements composition of each transition layer plating solution on the basis of existing technology, wherein the present invention adjusts a significant design theory of each layer solution composition is not by means of only the plating effect adjustment of solution composition being ensured to this coating, also to consider the plating requirement of adjacent coating, namely entirety is coordinated, facts have proved, middle each coating adopts the proportioning of component and each component concentration limited in technique scheme to reach the technique effect of expection, and the Composition Design of optional intermediate layer and component concentration depart from above-mentioned scope, effect will be caused sharply deteriorated, even effectively can not complete plating.
3) be all optimized on the basis of design at prime coat and transition layer, the adaptive Optimal improvements of carrying out also to the chromium coating on final surface.
4) coating of the present invention's acquisition, coating film thickness is even, and solidity to corrosion is high, and hardness is high, and surface-brightening is clean and tidy.Through cross-cut tester experiment, non-scale does not peel off.Through salt mist experiment, colour-fast, nondiscoloration.
Embodiment
Embodiment one
A kind of zinc die casting alloys part decorative chromium plating associating plating solution, described plating solution comprises non-cyanide pre-plating copper electrolyte, acid copper-plating plating solution, half bright nickel plating plating solution, plating high-sulfur nickel plating bath, electroplating bright nickel plating bath and electrodeposited chromium plating solution; Six kinds of plating solutions configure respectively, deposit, during use, first use and carry out non-cyanide copper electroplating bottoming without cyanogen pre-galvanized copper electroplate liquid, then use acid copper-plating plating solution, half bright nickel plating plating solution, plating high-sulfur nickel plating bath, electroplating bright nickel plating bath plating transition layer respectively successively, finally use electrodeposited chromium plating solution to carry out decorative surface chromium plating;
Wherein the composition of non-cyanide pre-plating copper electrolyte is: cupric pyrophosphate 80g/L, trisodium phosphate 150g/L, trisodium citrate 200g/L, Seignette salt 40g/L, HEDP15g/L, quadrol 180g/L; Bifluoride hydrogen ammonium 5g/L; Sodium Fluoride 3g/L, lithium fluoride 6g/L; Ammoniacal liquor adjust ph 9.5;
Wherein the composition of acid copper-plating plating solution is: copper sulfate (CuSO
45H
2o) 300g/L, sulfuric acid (ρ=1.84g/l) 22mL/L, chlorion 65mg/L, fill and lead up agent 0.9mL/L, open cylinder agent 3mL/L, brightening agent 0.3mL/L;
Wherein the composition of half bright nickel plating plating solution is: nickel single nickel salt (NiSO
46H
2o) 230g/L, nickelous chloride (NiCl
26H
2o) 65g/L, H
3bO
338g/L, open cylinder agent 6mL/L, fill and lead up agent 0.8mL/L, pH:3.6;
The composition wherein electroplating high-sulfur nickel plating bath is: single nickel salt (NiSO
46H
2o) 210g/L, nickelous chloride (NiCl
26H
2o) 55g/L, H
3bO
335g/L, wetting agent 5mL/L, pH3.0;
Wherein the composition of electroplating bright nickel plating bath is: single nickel salt (NiSO
46H
2o) 220g/L, nickelous chloride (NiCl
26H
2o) 44g/L, H
3bO
345g/L, key light agent 0.8mL/L, softening agent 6mL/L, auxiliary 7mL/L, wetting agent 1.0mL/L, pH4.0;
Wherein the composition of electrodeposited chromium plating solution is: chromic anhydride 270g/L, sulfuric acid (ρ=1.84g/l) 1.2g/L, trivalent chromium 1.5g/L, appropriate additive.
Embodiment two
A kind of zinc die casting alloys part decorative chromium plating associating plating solution, described plating solution comprises non-cyanide pre-plating copper electrolyte, acid copper-plating plating solution, half bright nickel plating plating solution, plating high-sulfur nickel plating bath, electroplating bright nickel plating bath and electrodeposited chromium plating solution; Six kinds of plating solutions configure respectively, deposit, during use, first use and carry out non-cyanide copper electroplating bottoming without cyanogen pre-galvanized copper electroplate liquid, then use acid copper-plating plating solution, half bright nickel plating plating solution, plating high-sulfur nickel plating bath, electroplating bright nickel plating bath plating transition layer respectively successively, finally use electrodeposited chromium plating solution to carry out decorative surface chromium plating;
Wherein the composition of non-cyanide pre-plating copper electrolyte is: cupric pyrophosphate 90g/L, trisodium phosphate 140g/L, trisodium citrate 220g/L, Seignette salt 36g/L, HEDP17g/L, quadrol 160g/L; Bifluoride hydrogen ammonium 8g/L; Sodium Fluoride 2g/L, lithium fluoride 8g/L; Ammoniacal liquor adjust ph 8.5;
Wherein the composition of acid copper-plating plating solution is: acid bright copper plating craft solution and operation steps as follows: copper sulfate (CuSO
45H
2o) 320g/L, sulfuric acid (ρ=1.84g/l) 20mL/L, chlorion 75mg/L, fill and lead up agent 0.7mL/L, open cylinder agent 6mL/L, brightening agent 0.2mL/L;
Wherein the composition of half bright nickel plating plating solution is: nickel single nickel salt (NiSO
46H
2o) 240g/L, nickelous chloride (NiCl
26H
2o) 55g/L, H
3bO
350g/L, open cylinder agent 3mL/L, fill and lead up agent 1.0mL/L, pH:4.0;
The composition wherein electroplating high-sulfur nickel plating bath is: single nickel salt (NiSO
46H
2o) 230g/L, nickelous chloride (NiCl
26H
2o) 45g/L, H
3bO
340g/L, wetting agent 1mL/L, pH2.8;
Wherein the composition of electroplating bright nickel plating bath is: single nickel salt (NiSO
46H
2o) 240g/L, nickelous chloride (NiCl
26H
2o) 42g/L, H
3bO
355g/L, key light agent 0.6mL/L, softening agent 8mL/L, auxiliary 5mL/L, wetting agent 1.2mL/L, pH4.2;
Wherein the composition of electrodeposited chromium plating solution is: chromic anhydride 290g/L, sulfuric acid (ρ=1.84g/l) 1.0g/L, trivalent chromium 3.0g/L, appropriate additive.
Embodiment three
A kind of zinc die casting alloys part decorative chromium plating associating plating solution, described plating solution comprises non-cyanide pre-plating copper electrolyte, acid copper-plating plating solution, half bright nickel plating plating solution, plating high-sulfur nickel plating bath, electroplating bright nickel plating bath and electrodeposited chromium plating solution; Six kinds of plating solutions configure respectively, deposit, during use, first use and carry out non-cyanide copper electroplating bottoming without cyanogen pre-galvanized copper electroplate liquid, then use acid copper-plating plating solution, half bright nickel plating plating solution, plating high-sulfur nickel plating bath, electroplating bright nickel plating bath plating transition layer respectively successively, finally use electrodeposited chromium plating solution to carry out decorative surface chromium plating;
Wherein the composition of non-cyanide pre-plating copper electrolyte is: cupric pyrophosphate 85g/L, tetra-sodium, 145g/L, trisodium citrate 210g/L, Seignette salt 38g/L, HEDP16g/L, quadrol 170g/L; Bifluoride hydrogen ammonium 6g/L; Sodium Fluoride 2.5g/L, lithium fluoride 7g/L; Ammoniacal liquor adjust ph 9;
Wherein the composition of acid copper-plating plating solution is: acid bright copper plating craft solution and operation steps as follows: copper sulfate (CuSO
45H
2o) 310g/L, sulfuric acid (ρ=1.84g/l) 21mL/L, chlorion 70mg/L, fill and lead up agent 0.8mL/L, open cylinder agent 5mL/L, brightening agent 0.25mL/L;
Wherein the composition of half bright nickel plating plating solution is: nickel single nickel salt (NiSO
46H
2o) 235g/L, nickelous chloride (NiCl
26H
2o) 60g/L, H
3bO
344g/L, open cylinder agent 5mL/L, fill and lead up agent 0.9mL/L, pH:3.8;
The composition wherein electroplating high-sulfur nickel plating bath is: single nickel salt (NiSO
46H
2o) 220g/L, nickelous chloride (NiCl
26H
2o) 50g/L, H
3bO
337g/L, wetting agent 3mL/L, pH2.9;
Wherein the composition of electroplating bright nickel plating bath is: single nickel salt (NiSO
46H
2o) 230g/L, nickelous chloride (NiCl
26H
2o) 43g/L, H
3bO
350g/L, key light agent 0.7mL/L, softening agent 7mL/L, auxiliary 6mL/L, wetting agent 1.1mL/L, pH4.1;
Wherein the composition of electrodeposited chromium plating solution is: chromic anhydride 280g/L, sulfuric acid (ρ=1.84g/l) 1.1g/L, trivalent chromium 2.3g/L, appropriate additive.
The present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, namely do not mean that the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of ancillary component, the concrete way choice etc. of each raw material of product of the present invention, all drops within protection scope of the present invention and open scope.
Claims (1)
1. a zinc die casting alloys part decorative chromium plating associating plating solution, described plating solution comprises non-cyanide pre-plating copper electrolyte, acid copper-plating plating solution, half bright nickel plating plating solution, plating high-sulfur nickel plating bath, electroplating bright nickel plating bath and electrodeposited chromium plating solution; Six kinds of plating solutions configure respectively, deposit, during use, first use and carry out non-cyanide copper electroplating bottoming without cyanogen pre-galvanized copper electroplate liquid, then use acid copper-plating plating solution, half bright nickel plating plating solution, plating high-sulfur nickel plating bath, electroplating bright nickel plating bath plating transition layer respectively successively, finally use electrodeposited chromium plating solution to carry out decorative surface chromium plating; It is characterized in that:
Wherein the composition of non-cyanide pre-plating copper electrolyte is: cupric pyrophosphate 80-90g/L, trisodium phosphate 140-150g/L, trisodium citrate 200-220g/L, Seignette salt 36-40g/L, HEDP15-17g/L, quadrol 160-180g/L; Bifluoride hydrogen ammonium 5-8g/L; Sodium Fluoride 2-3g/L, lithium fluoride 6-8g/L; Ammoniacal liquor adjust ph 8.5-9.5;
Wherein the composition of acid copper-plating plating solution is: copper sulfate (CuSO
45H
2o) 300-320g/L, sulfuric acid (ρ=1.84g/l) 20-22mL/L, chlorion 65-75mg/L, fill and lead up agent 0.7-0.9mL/L, open cylinder agent 3-6mL/L, brightening agent 0.2-0.3mL/L;
Wherein the composition of half bright nickel plating plating solution is: nickel single nickel salt (NiSO
46H
2o) 230-240g/L, nickelous chloride (NiCl
26H
2o) 55-65g/L, H
3bO
338-50g/L, open cylinder agent 3-6mL/L, fill and lead up agent 0.8-1.0mL/L, pH:3.6-4.0;
The composition wherein electroplating high-sulfur nickel plating bath is: single nickel salt (NiSO
46H
2o) 210-230g/L, nickelous chloride (NiCl
26H
2o) 45-55g/L, H
3bO
335-40g/L, wetting agent 1-5mL/L, pH2.8-3.0;
Wherein the composition of electroplating bright nickel plating bath is: single nickel salt (NiSO
46H
2o) 220-240g/L, nickelous chloride (NiCl
26H
2o) 42-44g/L, H
3bO
345-55g/L, key light agent 0.6-0.8mL/L, softening agent 6-8mL/L, auxiliary 5-7mL/L, wetting agent 1.0-1.2mL/L, pH4.0-4.2;
Wherein the composition of the plating solution of electrodeposited chromium is: chromic anhydride 270-290g/L, sulfuric acid (ρ=1.84g/l) 1.0-1.2g/L, trivalent chromium 1.5-3.0g/L, appropriate additive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510980057.7A CN105463541A (en) | 2015-12-24 | 2015-12-24 | Combined plating solution for plating decorative chrome on zinc die-casting alloy piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510980057.7A CN105463541A (en) | 2015-12-24 | 2015-12-24 | Combined plating solution for plating decorative chrome on zinc die-casting alloy piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105463541A true CN105463541A (en) | 2016-04-06 |
Family
ID=55601687
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|---|---|---|---|
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598059A (en) * | 2004-08-05 | 2005-03-23 | 广州杰赛科技股份有限公司 | Magnesium alloy non cyanogen plating copper chemical plating nickle and its plating process |
| CN101021009A (en) * | 2007-03-09 | 2007-08-22 | 湖南大学 | Nickel pre-coating process and nickel pre-coating solution for magnesium alloy surface |
| CN101280445A (en) * | 2008-05-16 | 2008-10-08 | 广州杰赛科技股份有限公司 | Electroplating process for surface of magnesium alloy motorcycle hub |
-
2015
- 2015-12-24 CN CN201510980057.7A patent/CN105463541A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598059A (en) * | 2004-08-05 | 2005-03-23 | 广州杰赛科技股份有限公司 | Magnesium alloy non cyanogen plating copper chemical plating nickle and its plating process |
| CN101021009A (en) * | 2007-03-09 | 2007-08-22 | 湖南大学 | Nickel pre-coating process and nickel pre-coating solution for magnesium alloy surface |
| CN101280445A (en) * | 2008-05-16 | 2008-10-08 | 广州杰赛科技股份有限公司 | Electroplating process for surface of magnesium alloy motorcycle hub |
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