CN212925173U - Plating layer structure of palladium-plated steel of zinc alloy die casting - Google Patents
Plating layer structure of palladium-plated steel of zinc alloy die casting Download PDFInfo
- Publication number
- CN212925173U CN212925173U CN202020411235.0U CN202020411235U CN212925173U CN 212925173 U CN212925173 U CN 212925173U CN 202020411235 U CN202020411235 U CN 202020411235U CN 212925173 U CN212925173 U CN 212925173U
- Authority
- CN
- China
- Prior art keywords
- palladium
- plating layer
- plating
- zinc alloy
- nickel
- 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.)
- Active
Links
Images
Landscapes
- Electroplating Methods And Accessories (AREA)
Abstract
The utility model discloses a zinc alloy die casting palladium plating steel's cladding material structure, including the zinc alloy base member and with alkaline zinc-nickel alloy cladding material, chemical nickel coating, pyrophosphate copper plate, acid copper cladding material, bright nickel cladding material, palladium steel cladding material that from inside to outside prepare in proper order on the zinc alloy base member. The utility model discloses a palladium steel coating structure, preparation technology environmental protection carries out neutral salt fog test 120 hours according to GB/T10125 + 2012 "artificial atmosphere corrosion test salt fog test", and the piece surface that plates does not have the corrosive substance and generates, has good corrosion resistance.
Description
Technical Field
The utility model belongs to the metal plating field, concretely relates to coating structure of palladium steel is plated to zinc alloy die casting.
Background
Palladium is a chemically stable noble metal material similar to gold. Palladium plating has excellent corrosion resistance, wear resistance, and electrical conductivity, and palladium is less expensive than gold, and thus palladium plating and palladium-plated alloys have been used in place of gold plating and gold-plated alloy processes.
The palladium alloy plating containing selenium and other elements is called as palladium steel plating, is a uniform, bright and white plating, has high corrosion resistance and wear resistance, and can be applied to the field of electronic plating and the plating of high-end ornaments.
The traditional process for electroplating palladium steel on zinc alloy die castings uses cyanide copper plating as a pre-plating layer, and since cyanide is a highly toxic compound, the use of cyanide is strictly prohibited by governments of various countries, and the cyanide copper plating process is gradually eliminated in the global scope.
The zinc alloy die casting surface has more pores, the prior art adopts cyanide copper plating to seal the pores on the zinc alloy die casting surface, and the cyanide copper plating is used as a pre-plating layer of pyrophosphate copper plating. Under the background that cyanide is prohibited, how to adopt environment-friendly electroplating technology to replace cyanide copper plating is an urgent problem to be solved in the industry.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the palladium-plated steel of zinc alloy die casting contains cyanide copper plating technology, the utility model provides a plating layer structure of palladium-plated steel of zinc alloy die casting. In order to achieve the purpose, the utility model adopts the following technical scheme:
a plating layer structure of palladium-plated steel of a zinc alloy die casting comprises a zinc alloy substrate, and an alkaline zinc-nickel alloy plating layer, a chemical nickel plating layer, a pyrophosphate copper plating layer, an acid copper plating layer, a bright nickel plating layer and a palladium steel plating layer which are sequentially prepared on the zinc alloy substrate from inside to outside.
In some embodiments, the thickness of the alkaline zinc-nickel alloy coating is 5-15 μm.
In some embodiments, the electroless nickel layer has a thickness of 1-5 μm.
In some embodiments, the pyrophosphate copper plating layer has a thickness of 5 to 10 μm.
In some embodiments, the thickness of the acid copper plating layer is 5-20 μm.
In some embodiments, the bright nickel coating has a thickness of 5-15 μm.
In some embodiments, the palladium steel plating layer has a thickness of 0.1 to 1.5 μm.
The alkaline zinc-nickel alloy plating solution has higher dispersing capacity and deep plating capacity, the plating layer has higher corrosion resistance, and the alkaline zinc-nickel alloy plating on the zinc alloy die casting can effectively seal holes and improve the corrosion resistance. Chemical nickel plating can be carried out on the zinc-nickel alloy plating layer, pyrophosphate copper plating can be carried out on the chemical nickel plating layer, and the bonding force between the plating layers is good, so the zinc-nickel alloy plating layer and the chemical nickel plating layer can replace a cyanide copper plating layer.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses a plating layer structure of palladium-plated steel for zinc alloy die castings, which adopts the electroplating alkaline zinc-nickel alloy to prepare a bottom plating layer, can effectively seal the pores on the surface layer of the zinc alloy die castings, and obviously improves the corrosion resistance of the plating layer;
2. the process of electroplating alkaline zinc-nickel alloy and chemically plating nickel instead of cyanide copper plating is adopted, so that the limitation of using highly toxic cyanide and potential safety hazard caused by the use of the highly toxic cyanide in the prior art are eliminated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, do not constitute a limitation of the invention, and in which:
FIG. 1 is a schematic diagram of the structure of the plating layer in examples 1 and 2 of the present invention.
Detailed Description
The invention will be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions are provided to explain the invention, but not to limit the invention.
Example 1:
as shown in figure 1, the coating structure of the palladium-plated steel of the zinc alloy die casting comprises a zinc alloy base body 1, and an alkaline zinc-nickel alloy coating 2, an electroless nickel coating 3, a pyrophosphate copper coating 4, an acid copper coating 5, a bright nickel coating 6 and a palladium steel coating 7 which are sequentially prepared on the zinc alloy base body 1 from inside to outside.
The thickness of the zinc-nickel alloy coating 2 is 5-7 mu m, and the zinc-nickel alloy coating is prepared by adopting a Detron 1215 alkaline zinc-nickel alloy electroplating process of the ultra-high chemical industry. The plating solution comprises the following components and operating conditions: 5.5-8.5 g/L Zn, 1.0-1.8 g/L Ni (provided by 13-22 mL/L DETRONZIN 1215 Ni replenisher), 120-135 g/L NaOH, 90-110 mL/L DETRONZIN 1215 Base adjuvant, 1.0-5.0 mL/L DETRONIN 1215 Brightener main polish, 0.1-0.8 mL/L DETRONZIN 1215 Purifier R decontaminant, 21-25 deg.C bath temperature, and 1.0-3.0A/dm of cathode current density2The cathode is moved 4-6 m/min.
The thickness of the chemical nickel-plating layer 3 is 2-3 mu m, and the chemical nickel-plating layer is prepared by adopting GG-182 alkaline chemical nickel-plating process of ultra-bonding chemical industry. The plating solution components and the operation conditions are as follows: 40-60 mL/L of GG-182A additive, 30-50 mL/L of GG-182B reducing agent, 30-50 mL/L of GG-182C stabilizer, 30-50 ℃ of operation temperature, 8.5-9.5 of pH range and 8-15 min of time.
The pyrophosphate copper plating layer 4 is 7-8 microns thick and is prepared by adopting the existing pyrophosphate copper plating process.
The thickness of the acid copper plating layer 5 is 13-15 mu m, and the acid copper plating layer is prepared by adopting the existing acid copper plating process.
The thickness of the bright nickel plating layer 6 is 10-12 mu m, and the bright nickel plating layer is prepared by adopting the existing bright nickel plating process.
The thickness of the palladium steel plating layer 7 is 0.3-0.5 mu m, and the palladium steel plating layer is prepared by a PALLASDIO 720 INOX palladium steel plating process of ultra-high chemical engineering. The plating solution components and the operation conditions are as follows: 995mL/L of PALLASDIO 720 INOX MPM palladium steel cylinder opening agent, 5mL/L of 50% ammonium chloride bar solution by mass fraction, 8.0-8.5 of pH value, 35-45 ℃ of operating temperature and 0.7A/dm of cathode current density2The cathode moves 3-5 m/min, and the electroplating time is 2-4 min.
The operation of the embodiment is divided into the following steps:
1. pretreatment: the zinc alloy part 1 is subjected to the steps of "chemical wax removal → water washing → ultrasonic wax removal → water washing → chemical degreasing → water washing → acid salt activation → water washing".
2. Electroplating zinc-nickel alloy: the zinc alloy die casting 1 after pretreatment is prepared into a zinc-nickel alloy coating 2 by adopting a Detronzin 1215 alkaline zinc-nickel alloy electroplating process.
3. Chemical nickel plating: and preparing a chemical nickel-plating layer 3 on the zinc-nickel alloy plating layer 2 by adopting a GG-182 alkaline chemical nickel-plating process.
4. Pyrophosphate copper plating: a pyrophosphate copper plating layer 4 was prepared on the electroless nickel plating layer 3.
5. Acid copper plating: an acid copper plating layer 5 is prepared on the pyrophosphate copper plating layer 4.
6. Plating bright nickel: a bright nickel plating layer 6 is prepared on the acid copper plating layer 5.
7. Plating palladium steel: and preparing a palladium steel plating layer 7 on the bright nickel plating layer 6 by adopting a PALLASDIO 720 INOX palladium steel plating process.
Example 2:
as shown in figure 1, the coating structure of the palladium-plated steel of the zinc alloy die casting comprises a zinc alloy base body 1, and an alkaline zinc-nickel alloy coating 2, an electroless nickel coating 3, a pyrophosphate copper coating 4, an acid copper coating 5, a bright nickel coating 6 and a palladium steel coating 7 which are sequentially prepared on the zinc alloy base body 1 from inside to outside.
The thickness of the zinc-nickel alloy coating 2 is 8-10 mu m, and the zinc-nickel alloy coating is prepared by adopting a DETRONZIN 510 alkaline zinc-nickel alloy electroplating process in the ultra-high chemical industry. The plating solution comprises the following components and operating conditions: 6-9 g/L zinc, 1.3-1.9 g/L nickel (provided by DetroNZIN 515 nickel replenisher 17-23 mL/L), 100-130 g/L sodium hydroxide, 100-130 mL/L DEtroNZIN 510 auxiliary agent, 6-10 mL/L DEtroNZIN 511 cylinder opener, 6-10 mL/L DEtroNZIN 512 brightener, 21-25 ℃ plating bath temperature, and 0.5-3.0A/dm cathode current density2The cathode is moved for 2-5 m/min.
The thickness of the chemical nickel-plating layer 3 is 2-3 mu m, and the chemical nickel-plating layer is prepared by adopting GG-178 alkaline chemical nickel-plating process of ultra-high chemical industry. The plating solution components and the operation conditions are as follows: 25-50 mL/L of GG-178A additive, 25-40 mL/L of GG-178B reducing agent, 30-60 mL/L of GG-178C stabilizer, 25-38 ℃ of operation temperature, 8.5-9.5 of pH value and 8-15 min of time.
The pyrophosphate copper plating layer 4 is 5-6 microns thick and is prepared by adopting the existing pyrophosphate copper plating process.
The thickness of the acid copper plating layer 5 is 15-18 mu m, and the acid copper plating layer is prepared by adopting the existing acid copper plating process.
The thickness of the bright nickel plating layer 6 is 8-10 mu m, and the bright nickel plating layer is prepared by adopting the existing bright nickel plating process.
The thickness of the palladium steel plating layer 7 is 0.5-0.7 mu m, and the palladium steel plating layer is prepared by a PALLASDIO 720 INOX palladium steel plating process of ultra-high chemical engineering. The plating solution components and the operation conditions are as follows: 995mL/L of PALLASDIO 720 INOX MPM palladium steel cylinder opening agent, 5mL/L of 50% ammonium chloride bar solution by mass fraction, 8.0-8.5 of pH value, 35-45 ℃ of operating temperature and 0.9A/dm of cathode current density2The cathode moves 3-5 m/min, and the electroplating time is 2.5-4 min.
The operation of the embodiment is divided into the following steps:
1. pretreatment: the zinc alloy die casting 1 is subjected to the steps of "chemical wax removal → water washing → ultrasonic wax removal → water washing → chemical degreasing → water washing → acid salt activation → water washing".
2. Electroplating zinc-nickel alloy: the zinc alloy part 1 after pretreatment is prepared into a zinc-nickel alloy coating 2 by adopting a Detronzin 510 alkaline zinc-nickel alloy electroplating process.
3. Chemical nickel plating: and preparing a chemical nickel-plating layer 3 on the zinc-nickel alloy plating layer 2 by adopting a GG-178 alkaline chemical nickel-plating process.
4. Pyrophosphate copper plating: pyrophosphate copper plating 4 was prepared on the electroless nickel plating layer 3.
5. Acid copper plating: an acid copper plating layer 5 is prepared on the pyrophosphate copper plating layer 4.
6. Plating bright nickel: a bright nickel plating layer 6 is prepared on the acid copper plating layer 5.
7. Plating palladium steel: and preparing a palladium steel plating layer 7 on the bright nickel plating layer 6 by adopting a PALLASDIO 720 INOX palladium steel plating process.
The plated articles prepared in examples 1 and 2 were tested for plating adhesion by thermal shock test according to JB 2111-. And (3) heating the plated part to 190 ℃ in a heating furnace, taking out the plated part, and placing the plated part into water at room temperature for sudden cooling, wherein the plated layer does not generate bubbles and fall off, and the plated layer has good bonding force.
The electroplated parts prepared in the embodiments 1 and 2 are subjected to a neutral salt spray test for 120h according to GB/T10125-2012 salt spray test for artificial atmosphere corrosion test, and no corrosive substances are generated on the surfaces of the electroplated parts.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the description should not be construed as a limitation to the present invention.
Claims (6)
1. The utility model provides a zinc alloy die casting palladium plating steel's cladding material structure which characterized in that: the zinc alloy plating layer is prepared on the zinc alloy substrate from inside to outside; the thickness of the palladium steel coating is 0.1-1.5 mu m.
2. The plating structure of the zinc alloy die casting palladium-plated steel according to claim 1, characterized in that: the thickness of the alkaline zinc-nickel alloy coating is 5-15 mu m.
3. The plating structure of the zinc alloy die casting palladium-plated steel according to claim 1, characterized in that: the thickness of the chemical nickel-plating layer is 1-5 mu m.
4. The plating structure of the zinc alloy die casting palladium-plated steel according to claim 1, characterized in that: the pyrophosphate copper plating layer is 5-10 μm thick.
5. The plating structure of the zinc alloy die casting palladium-plated steel according to claim 1, characterized in that: the thickness of the acid copper plating layer is 5-20 mu m.
6. The plating structure of the zinc alloy die casting palladium-plated steel according to claim 1, characterized in that: the thickness of the bright nickel coating is 5-15 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020411235.0U CN212925173U (en) | 2020-03-26 | 2020-03-26 | Plating layer structure of palladium-plated steel of zinc alloy die casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020411235.0U CN212925173U (en) | 2020-03-26 | 2020-03-26 | Plating layer structure of palladium-plated steel of zinc alloy die casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212925173U true CN212925173U (en) | 2021-04-09 |
Family
ID=75297410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020411235.0U Active CN212925173U (en) | 2020-03-26 | 2020-03-26 | Plating layer structure of palladium-plated steel of zinc alloy die casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212925173U (en) |
-
2020
- 2020-03-26 CN CN202020411235.0U patent/CN212925173U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100387757C (en) | Method for electroplating magnesium and magnesium alloy | |
| CN101928967B (en) | Cobalt-tungsten-nickel-phosphorus alloy electroplating liquid | |
| CN102691081A (en) | Electrosilvering solution and electrosilvering method | |
| CN101260549B (en) | Non-preplating type non-cyanide silver-plating electroplate liquid | |
| CN113122845A (en) | Preparation method of aluminum alloy metal plated part | |
| CN212103011U (en) | Coating structure of aluminum alloy die casting environment-friendly gilding | |
| CN114232040A (en) | Nickel-phosphorus alloy electroplating solution and electroplating method | |
| CN212640613U (en) | Coating structure for plating gold-cobalt alloy on zinc alloy die casting | |
| CN212925173U (en) | Plating layer structure of palladium-plated steel of zinc alloy die casting | |
| CN212925174U (en) | Coating structure for plating rose gold on zinc alloy die casting | |
| CN212103010U (en) | Coating structure of gold-plated nickel alloy of zinc alloy die casting | |
| CN212925172U (en) | Environment-friendly rhodium-plated coating structure for zinc alloy die castings | |
| CN212293784U (en) | Plating layer structure of steel part palladium-plated steel | |
| CN210420166U (en) | Non-cyanide cadmium titanium alloy and trivalent chromium passivation coating structure of aluminum alloy matrix | |
| CN108179447B (en) | Preparation method of cyanide-free cadmium plating layer structure on aluminum alloy substrate | |
| CN217351579U (en) | Coating structure for gold plating on surface of neodymium iron boron | |
| CN212293785U (en) | Zinc alloy die casting pearl chromium plating layer structure with zinc-plated nickel alloy as bottom layer | |
| CN108130572B (en) | Aluminum alloy nickel pre-plating solution | |
| CN216074060U (en) | Coating structure for zinc alloy die casting plated with pearl nickel and electrophoretic painting | |
| CN218710934U (en) | Coating structure for plating zinc alloy die casting trivalent chromium with pearl chromium | |
| CN214088702U (en) | Plating layer structure for plating pearl chromium on trivalent chromium of aluminum alloy part | |
| CN217361286U (en) | Coating structure of sintered neodymium iron boron zinc-nickel alloy | |
| CN219586209U (en) | Plating layer structure of zinc alloy die casting gold-plated palladium alloy | |
| CN214088701U (en) | Coating structure for plating trivalent chromium and white chromium on aluminum alloy die casting | |
| CN220450333U (en) | Plating layer structure of tin-plated cobalt alloy chromium substitution |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |