CN112609212A - Zinc-nickel alloy electroplating process for part with spinning surface - Google Patents
Zinc-nickel alloy electroplating process for part with spinning surface Download PDFInfo
- Publication number
- CN112609212A CN112609212A CN202011396690.9A CN202011396690A CN112609212A CN 112609212 A CN112609212 A CN 112609212A CN 202011396690 A CN202011396690 A CN 202011396690A CN 112609212 A CN112609212 A CN 112609212A
- Authority
- CN
- China
- Prior art keywords
- oil removal
- degreasing
- tank
- plated
- zinc
- 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.)
- Pending
Links
Classifications
-
- 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
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/565—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of zinc
-
- 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
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention provides a zinc-nickel alloy electroplating process for a part with a spinning surface, which comprises the following steps: s1, performing off-line pretreatment; s2, removing oil by primary hot alkali; s3, carrying out primary anode electrolysis to remove oil; s4, acid washing; s5, removing oil by secondary anode electrolysis; s6, activating; s7, presoaking; and S8, electroplating. The method carries out chemical degreasing, twice hot alkali degreasing and twice anode electrolysis degreasing, and compared with the method which independently uses hot alkali degreasing and electrolysis degreasing, the method has the advantages that the process condition is mild, and the spinning surface electroplated layer is not easy to crack. The spinning surface has no red embroidery within 480 hours in the neutral salt spray test, and has no red embroidery within 720 hours at the non-spinning position.
Description
Technical Field
The invention relates to the technical field of electroplating, in particular to a zinc-nickel alloy electroplating process for parts with spinning surfaces.
Background
The zinc-nickel alloy has good wear resistance in the electroplating industry, can resist various acid corrosion, stress corrosion and the like, and is widely applied. However, in the existing zinc-nickel alloy electroplating process, when the part has a spinning requirement or a spinning surface structure after electroplating, the problems of poor appearance after electroplating, peeling of an electroplated layer after spinning and the like often occur, so further improvement is needed to solve the problems.
Disclosure of Invention
In order to solve the above-mentioned drawbacks, the present invention provides a process for electroplating a zinc-nickel alloy on a component having a spinning surface, so as to solve the above-mentioned problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a zinc-nickel alloy electroplating process for parts with spinning surfaces comprises the following steps:
s1, off-line pretreatment: putting a piece to be plated into an oil removal tank for chemical oil removal treatment, wherein the concentration of oil removal powder adopted for chemical oil removal is 70-100g/L, the oil removal temperature is 55-65 ℃, and the oil removal time is 6-8 min; then soaking the workpiece to be plated into an acid mixing tank for acid washing after water washing, wherein the acid washing time is 30-100%;
s2, primary hot alkali oil removal: conveying the workpiece to be plated after chemical oil removal into a hot alkali oil removal tank for primary hot alkali oil removal, wherein the concentration of an alkaline oil removal solution adopted for the primary hot alkali oil removal is 70-100g/L, the oil removal temperature is 55-65 ℃, and the oil removal time is 6-10 min;
s3, primary anode electrolysis degreasing: conveying the piece to be plated after primary hot alkali degreasing into an anode electrolytic cell for primary anode electrolytic degreasing, wherein the concentration of degreasing powder adopted in the primary anode electrolytic degreasing is 70-100g/L, the degreasing temperature is 55-65 ℃, and the degreasing time is 6-8 min;
s4, acid washing: sending the part to be plated after the primary anode electrolytic degreasing into a 200-300ml/L hydrochloric acid pickling tank, wherein the pickling temperature is room temperature, and the pickling time is 6-8 min; then putting the mixture into a cleaning tank for water washing, wherein the water washing time is 200-300 s;
s5, secondary anode electrolysis degreasing: sending the part to be plated after acid washing into an anode electrolytic cell for secondary anode electrolytic degreasing, wherein the concentration of degreasing powder adopted for the secondary anode electrolytic degreasing is 60-100g/L, the degreasing temperature is 55-65 ℃, and the degreasing time is 6-8 min;
s6, activation: sending the plated part subjected to secondary anode electrolytic degreasing into an activation tank for activation treatment, wherein the activation solution in the activation tank is hydrochloric acid with the concentration of 130-170ml/L, the activation temperature is room temperature, and the activation time is 30-50 s;
s7, pre-soaking: the activated part to be plated is sent into a presoaking tank with the concentration of sodium hydroxide of 10-30ml/L for presoaking, and the presoaking time is 2-4 min;
s8, electroplating: sending the pre-soaked to-be-plated part into a zinc-nickel alloy tank for plating acidic zinc and nickel, wherein the electroplating solution in the zinc-nickel alloy tank comprises the following components: zinc ion: 5-9g/L, nickel ion: 0.5-1.5g/L, and 130g/L of sodium hydroxide 115-; and then putting the mixture into a cleaning tank for water cleaning, wherein the water cleaning time is 100-200 s.
As a still further scheme of the invention: the mixed acid in the acid mixing tank in the step S1 is a mixed solution of concentrated hydrochloric acid and concentrated sulfuric acid.
As a still further scheme of the invention: and performing secondary hot-alkali oil removal treatment on the piece to be plated between the steps S2 and S3, and conveying the piece to be plated after primary hot-alkali oil removal into a hot-alkali oil removal tank for secondary hot-alkali oil removal, wherein the concentration of an alkaline oil removal solution adopted for secondary hot-alkali oil removal is 70-100g/L, the oil removal temperature is 55-65 ℃, and the oil removal time is 12-18 min.
As a still further scheme of the invention: in step S8, a plurality of additives including a zinc-nickel alloy brightener and a zinc-nickel alloy complexing agent are added to the electroplating solution.
The invention has the beneficial effects that: compared with the single use of thermokalite oil removal and electrolytic oil removal, the process conditions are mild, and the spinning surface electroplated layer is not easy to crack. The spinning surface has no red embroidery within 480 hours in the neutral salt spray test, and has no red embroidery within 720 hours at the non-spinning position.
Detailed Description
The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.
Example 1
A zinc-nickel alloy electroplating process for parts with spinning surfaces comprises the following steps:
s1, off-line pretreatment: putting a piece to be plated into an oil removal tank for chemical oil removal treatment, wherein the concentration of oil removal powder adopted for chemical oil removal is 70g/L, the oil removal temperature is 55 ℃, and the oil removal time is 6 min; and then, soaking the part to be plated into an acid mixing tank for acid washing after water washing, wherein the acid washing time is 30 s. Wherein the mixed acid in the acid mixing tank is the mixed solution of concentrated hydrochloric acid and concentrated sulfuric acid. Therefore, the oxide skin on the surface of the blank can be better removed, and a coating with better bonding force is obtained.
S2, primary hot alkali oil removal: and (3) conveying the workpiece to be plated after chemical oil removal into a hot alkali oil removal tank for primary hot alkali oil removal, wherein the concentration of an alkaline oil removal solution adopted for the primary hot alkali oil removal is 70g/L, the oil removal temperature is 55 ℃, and the oil removal time is 6 min.
And (3) secondary hot-alkali oil removal treatment, namely conveying the piece to be plated after the primary hot-alkali oil removal into a hot-alkali oil removal tank for secondary hot-alkali oil removal, wherein the concentration of an alkaline oil removal solution adopted in the secondary hot-alkali oil removal is 70g/L, the oil removal temperature is 55 ℃, and the oil removal time is 12 min.
By adopting two hot alkali oil removal treatments, a good oil removal effect can be obtained, and the oil stain on the inner wall can be completely removed.
S3, primary anode electrolysis degreasing: and (3) conveying the piece to be plated after primary hot alkali degreasing into an anode electrolytic bath for primary anode electrolytic degreasing, wherein the degreasing powder concentration adopted in the primary anode electrolytic degreasing is 70g/L, the degreasing temperature is 55 ℃, and the degreasing time is 6 min.
S4, acid washing: conveying the workpiece to be plated after the anodic electrolysis degreasing into a 200ml/L hydrochloric acid pickling tank, wherein the pickling temperature is room temperature, and the pickling time is 6 min; then the obtained product is put into a cleaning tank for water washing, and the water washing time is 200 s. The scale attached to the surface of the part is removed microscopically. And the effect of the oxide skin on the inner wall of the inner hole is obvious.
S5, secondary anode electrolysis degreasing: and (3) conveying the part to be plated after the pickling into an anode electrolytic cell for secondary anode electrolytic degreasing, wherein the concentration of degreasing powder adopted for the secondary anode electrolytic degreasing is 60g/L, the degreasing temperature is 55 ℃, and the degreasing time is 6 min.
S6, activation: and (3) feeding the plated part subjected to secondary anode electrolytic degreasing into an activation tank for activation treatment, wherein the activation solution in the activation tank is hydrochloric acid with the concentration of 130ml/L, the activation temperature is room temperature, and the activation time is 30 s.
S7, pre-soaking: and (3) putting the activated workpiece to be plated into a presoaking tank with the concentration of sodium hydroxide of 10ml/L for presoaking for 2 min.
S8, electroplating: and (2) conveying the pre-soaked to-be-plated part into a zinc-nickel alloy tank for alkaline zinc-nickel plating, wherein the components of an electroplating solution in the zinc-nickel alloy tank are as follows: zinc ion: 5g/L, nickel ion: 0.5g/L, 115g/L sodium hydroxide, 21 ℃ of electroplating temperature and 40min of electroplating time; current density 1.3A/dm2. Then putting the mixture into a cleaning tank for water cleaningThe washing time was 100 s. Wherein, the electroplating solution is also added with additives, and the additives comprise the optimal combination of a nickel alloy low-area brightener, a high-area brightener, a zinc-nickel alloy zinc ion complexing agent and a nickel ion complexing agent. The thickness of the spinning opening is required to be 3-6um, the thickness of the non-spinning opening is required to be more than 8um, and the thickness of the inner wall is required to be 3-9 um. The salt fog of the spinning surface requires 480 hours without red embroidery, and the salt fog of the non-spinning part requires 720 hours without red embroidery. On the premise of ensuring the salt spray requirement, the thickness is controlled to be in the required middle-upper limit production as much as possible, and the thickness of the spinning part is controlled to be in the lower limit production, so that the problem that the salt spray requirement of the workpiece is influenced because the electroplated layer falls off due to spinning after electroplating can be avoided to the maximum extent.
Example 2
A zinc-nickel alloy electroplating process for parts with spinning surfaces comprises the following steps:
s1, off-line pretreatment: putting a piece to be plated into an oil removal tank for chemical oil removal treatment, wherein the concentration of oil removal powder adopted for chemical oil removal is 100g/L, the oil removal temperature is 65 ℃, and the oil removal time is 8 min; then, soaking the part to be plated into an acid mixing tank for acid washing after water washing, wherein the acid washing time is 100 s; wherein the mixed acid in the acid mixing tank is the mixed solution of concentrated hydrochloric acid and concentrated sulfuric acid.
S2, primary hot alkali oil removal: and (3) conveying the workpiece to be plated after chemical oil removal into a hot alkali oil removal tank for primary hot alkali oil removal, wherein the concentration of an alkaline oil removal solution adopted for the primary hot alkali oil removal is 100g/L, the oil removal temperature is 65 ℃, and the oil removal time is 10 min.
And (3) secondary hot-alkali oil removal treatment, namely conveying the workpiece to be plated after the primary hot-alkali oil removal into a hot-alkali oil removal tank for secondary hot-alkali oil removal, wherein the concentration of an alkaline oil removal solution adopted in the secondary hot-alkali oil removal is 100g/L, the oil removal temperature is 65 ℃, and the oil removal time is 18 min.
S3, primary anode electrolysis degreasing: and (3) conveying the piece to be plated after primary hot alkali degreasing into an anode electrolytic cell for primary anode electrolytic degreasing, wherein the degreasing powder concentration adopted in the primary anode electrolytic degreasing is 100g/L, the degreasing temperature is 65 ℃, and the degreasing time is 8 min.
S4, acid washing: sending the workpiece to be plated after the anodic electrolytic degreasing into a 300ml/L hydrochloric acid pickling tank, wherein the pickling temperature is room temperature, and the pickling time is 8 min; then the obtained product is put into a cleaning tank for water washing, and the water washing time is 300 s.
S5, secondary anode electrolysis degreasing: and (3) conveying the part to be plated after the pickling into an anode electrolytic cell for secondary anode electrolytic degreasing, wherein the concentration of degreasing powder adopted for the secondary anode electrolytic degreasing is 100g/L, the degreasing temperature is 65 ℃, and the degreasing time is 8 min.
S6, activation: and (3) conveying the plated part subjected to secondary anodic electrolytic degreasing into an activation tank for activation treatment, wherein the activation solution in the activation tank is hydrochloric acid with the concentration of 170ml/L, the activation temperature is room temperature, and the activation time is 50 s.
S7, pre-soaking: and (3) putting the activated part to be plated into a presoaking tank with the concentration of sodium hydroxide of 30ml/L for presoaking for 4 min.
S8, electroplating: sending the pre-soaked to-be-plated part into a zinc-nickel alloy tank for plating acidic zinc and nickel, wherein the electroplating solution in the zinc-nickel alloy tank comprises the following components: zinc ion: 9g/L, nickel ion: 1.5g/L and 130g/L of sodium hydroxide, wherein the electroplating temperature is 27 ℃, and the electroplating time is 70 min; current density 1.3A/dm2. Then the obtained product is put into a cleaning tank for water cleaning, and the water cleaning time is 200 s. Wherein, the electroplating solution is also added with additives, and the additives comprise the optimal combination of a nickel alloy low-area brightener, a high-area brightener, a zinc-nickel alloy zinc ion complexing agent and a nickel ion complexing agent.
Example 3
A zinc-nickel alloy electroplating process for parts with spinning surfaces comprises the following steps:
s1, off-line pretreatment: putting a piece to be plated into an oil removal groove for chemical oil removal treatment, wherein the concentration of oil removal powder adopted for chemical oil removal is 85g/L, the oil removal temperature is 60 ℃, and the oil removal time is 7 min; then, soaking the part to be plated into an acid mixing tank for acid washing after water washing, wherein the acid washing time is 65 s; wherein the mixed acid in the acid mixing tank is the mixed solution of concentrated hydrochloric acid and concentrated sulfuric acid.
S2, primary hot alkali oil removal: and (3) conveying the workpiece to be plated after chemical oil removal into a hot alkali oil removal tank for primary hot alkali oil removal, wherein the concentration of an alkaline oil removal solution adopted for the primary hot alkali oil removal is 85g/L, the oil removal temperature is 60 ℃, and the oil removal time is 7 min.
And (3) secondary hot-alkali oil removal treatment, namely conveying the piece to be plated after the primary hot-alkali oil removal into a hot-alkali oil removal tank for secondary hot-alkali oil removal, wherein the concentration of an alkaline oil removal solution adopted in the secondary hot-alkali oil removal is 85g/L, the oil removal temperature is 60 ℃, and the oil removal time is 15 min.
S3, primary anode electrolysis degreasing: and (3) conveying the piece to be plated after primary hot alkali degreasing into an anode electrolytic cell for primary anode electrolytic degreasing, wherein the degreasing powder concentration adopted in the primary anode electrolytic degreasing is 85g/L, the degreasing temperature is 60 ℃, and the degreasing time is 7 min.
S4, acid washing: conveying the workpiece to be plated after the anodic electrolytic degreasing into a 250ml/L hydrochloric acid pickling tank, wherein the pickling temperature is room temperature, and the pickling time is 7 min; then the obtained product is put into a cleaning tank for water washing, and the water washing time is 250 s.
S5, secondary anode electrolysis degreasing: and (3) conveying the part to be plated after the pickling into an anode electrolytic cell for secondary anode electrolytic degreasing, wherein the concentration of degreasing powder adopted for the secondary anode electrolytic degreasing is 80g/L, the degreasing temperature is 60 ℃, and the degreasing time is 7 min.
S6, activation: and (3) conveying the plated part subjected to secondary anodic electrolytic degreasing into an activation tank for activation treatment, wherein the activation solution in the activation tank is hydrochloric acid with the concentration of 150ml/L, the activation temperature is room temperature, and the activation time is 40 s.
S7, pre-soaking: and (3) putting the activated part to be plated into a presoaking tank with the concentration of sodium hydroxide of 20ml/L for presoaking for 3 min.
S8, electroplating: sending the pre-soaked to-be-plated part into a zinc-nickel alloy tank for plating acidic zinc and nickel, wherein the electroplating solution in the zinc-nickel alloy tank comprises the following components: zinc ion: 7g/L, nickel ion: 1g/L, 122g/L sodium hydroxide, 24 ℃ of electroplating temperature and 55min of electroplating time; current density 1.5A/dm2. Then the obtained product is put into a cleaning tank for water cleaning, and the water cleaning time is 150 s. Wherein, the electroplating solution is also added with additives, and the additives comprise the optimal combination of a nickel alloy low-area brightener, a high-area brightener, a zinc-nickel alloy zinc ion complexing agent and a nickel ion complexing agent.
Comparative example
The zinc-nickel alloy electroplating process for the spinning surface part of the comparative example comprises the following steps:
s1, off-line pretreatment: and putting the piece to be plated into an oil removal tank for chemical oil removal treatment, wherein the concentration of oil removal powder adopted for chemical oil removal is 80g/L, the oil removal temperature is 55 ℃, and the oil removal time is 10 min.
S2, primary hot alkali oil removal: and (3) conveying the workpiece to be plated after chemical oil removal into a hot alkali oil removal tank for primary hot alkali oil removal, wherein the concentration of an alkaline oil removal solution adopted for the primary hot alkali oil removal is 63g/L, the oil removal temperature is 68 ℃, and the oil removal time is 6 min.
S3, acid washing: sending the workpiece to be plated after hot alkali degreasing into a 250ml/L hydrochloric acid pickling tank, wherein the pickling temperature is room temperature, and the pickling time is 5 min; then the obtained product is put into a cleaning tank for water washing, and the water washing time is 210 s.
S4, electrolytic degreasing: and (3) conveying the part to be plated after the pickling into an anode electrolytic cell for electrolytic oil removal, wherein the concentration of oil removal powder for the electrolytic oil removal is 65g/L, the oil removal temperature is 65 ℃, and the oil removal time is 6 min.
S4, activation: and (3) feeding the plated part subjected to secondary anode electrolytic degreasing into an activation tank for activation treatment, wherein the activation solution in the activation tank is hydrochloric acid with the concentration of 130ml/L, the activation temperature is room temperature, and the activation time is 30 s.
S6, pre-soaking: and (3) putting the activated workpiece to be plated into a presoaking tank with the concentration of sodium hydroxide of 30ml/L for presoaking for 3 min.
S6, electroplating: sending the pre-soaked to-be-plated part into a zinc-nickel alloy tank for plating acidic zinc and nickel, wherein the electroplating solution in the zinc-nickel alloy tank comprises the following components: zinc ion: 5.5g/L, nickel ion: 1g/L, 125g/L sodium hydroxide, 25 ℃ of electroplating temperature and 63min of electroplating time; current density 1.5A/dm2. Then putting into a cleaning tank for water washing, wherein the water washing time is 1 min.
The following table shows the comparison of the zinc-nickel alloy electroplating process for the parts with spinning surfaces of examples 1-3 with the zinc-nickel alloy electroplating process for the parts with spinning surfaces of the comparative example:
as can be seen from the above table, the electroplating process carries out chemical degreasing, twice hot alkali degreasing and twice anode electrolysis degreasing, compared with the single use of hot alkali degreasing and electrolysis degreasing, the process conditions are mild, and the spinning surface electroplated layer is not easy to crack.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A zinc-nickel alloy electroplating process for parts with spinning surfaces is characterized by comprising the following steps:
s1, off-line pretreatment: putting a piece to be plated into an oil removal tank for chemical oil removal treatment, wherein the concentration of oil removal powder adopted for chemical oil removal is 70-100g/L, the oil removal temperature is 55-65 ℃, and the oil removal time is 6-8 min; then soaking the workpiece to be plated into an acid mixing tank for acid washing after water washing, wherein the acid washing time is 30-100 s;
s2, primary hot alkali oil removal: conveying the workpiece to be plated after chemical oil removal into a hot alkali oil removal tank for primary hot alkali oil removal, wherein the concentration of an alkaline oil removal solution adopted for the primary hot alkali oil removal is 70-100g/L, the oil removal temperature is 55-65 ℃, and the oil removal time is 6-10 min;
s3, primary anode electrolysis degreasing: conveying the piece to be plated after primary hot alkali degreasing into an anode electrolytic cell for primary anode electrolytic degreasing, wherein the concentration of degreasing powder adopted in the primary anode electrolytic degreasing is 70-100g/L, the degreasing temperature is 55-65 ℃, and the degreasing time is 6-8 min;
s4, acid washing: sending the part to be plated after the primary anode electrolytic degreasing into a 200-300ml/L hydrochloric acid pickling tank, wherein the pickling temperature is room temperature, and the pickling time is 6-8 min; then putting the mixture into a cleaning tank for water washing, wherein the water washing time is 200-300 s;
s5, secondary anode electrolysis degreasing: sending the part to be plated after acid washing into an anode electrolytic cell for secondary anode electrolytic degreasing, wherein the concentration of degreasing powder adopted for the secondary anode electrolytic degreasing is 60-100g/L, the degreasing temperature is 55-65 ℃, and the degreasing time is 6-8 min;
s6, activation: sending the plated part subjected to secondary anode electrolytic degreasing into an activation tank for activation treatment, wherein the activation solution in the activation tank is hydrochloric acid with the concentration of 130-170ml/L, the activation temperature is room temperature, and the activation time is 30-50 s;
s7, pre-soaking: the activated part to be plated is sent into a presoaking tank with the concentration of sodium hydroxide of 10-30ml/L for presoaking, and the presoaking time is 2-4 min;
s8, electroplating: sending the pre-soaked to-be-plated part into a zinc-nickel alloy tank for plating acidic zinc and nickel, wherein the electroplating solution in the zinc-nickel alloy tank comprises the following components: zinc ion: 5-9g/L, nickel ion: 0.5-1.5g/L, and 130g/L of sodium hydroxide 115-; and then putting the mixture into a cleaning tank for water cleaning, wherein the water cleaning time is 100-200 s.
2. The process for electroplating a zinc-nickel alloy on a spun-pressed surface part as claimed in claim 1, wherein the process comprises the following steps: the mixed acid in the acid mixing tank in the step S1 is a mixed solution of concentrated hydrochloric acid and concentrated sulfuric acid.
3. The process for electroplating a zinc-nickel alloy on a spun-pressed surface part as claimed in claim 1, wherein the process comprises the following steps: and performing secondary hot-alkali oil removal treatment on the piece to be plated between the steps S2 and S3, and conveying the piece to be plated after primary hot-alkali oil removal into a hot-alkali oil removal tank for secondary hot-alkali oil removal, wherein the concentration of an alkaline oil removal solution adopted for secondary hot-alkali oil removal is 70-100g/L, the oil removal temperature is 55-65 ℃, and the oil removal time is 12-18 min.
4. The process for electroplating a zinc-nickel alloy on a spun-pressed surface part as claimed in claim 1, wherein the process comprises the following steps: in step S8, a plurality of additives including a zinc-nickel alloy brightener and a zinc-nickel alloy complexing agent are added to the electroplating solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011396690.9A CN112609212A (en) | 2020-12-03 | 2020-12-03 | Zinc-nickel alloy electroplating process for part with spinning surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011396690.9A CN112609212A (en) | 2020-12-03 | 2020-12-03 | Zinc-nickel alloy electroplating process for part with spinning surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112609212A true CN112609212A (en) | 2021-04-06 |
Family
ID=75229026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011396690.9A Pending CN112609212A (en) | 2020-12-03 | 2020-12-03 | Zinc-nickel alloy electroplating process for part with spinning surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112609212A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114016102A (en) * | 2021-12-07 | 2022-02-08 | 中国第一汽车股份有限公司 | Surface treatment process for standard part |
| CN114481242A (en) * | 2021-12-20 | 2022-05-13 | 南通申海工业科技有限公司 | Process for electroplating acidic zinc-nickel alloy on casting |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290442A (en) * | 2013-06-13 | 2013-09-11 | 南通市申海工业技术科技有限公司 | Electroplating process for zinc-nickel alloy |
| CN111778532A (en) * | 2020-08-05 | 2020-10-16 | 扬州市景杨表面工程有限公司 | Alkaline zinc-nickel electroplating method for lock ring and embedded ring of automobile fuel tank |
-
2020
- 2020-12-03 CN CN202011396690.9A patent/CN112609212A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290442A (en) * | 2013-06-13 | 2013-09-11 | 南通市申海工业技术科技有限公司 | Electroplating process for zinc-nickel alloy |
| CN111778532A (en) * | 2020-08-05 | 2020-10-16 | 扬州市景杨表面工程有限公司 | Alkaline zinc-nickel electroplating method for lock ring and embedded ring of automobile fuel tank |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114016102A (en) * | 2021-12-07 | 2022-02-08 | 中国第一汽车股份有限公司 | Surface treatment process for standard part |
| CN114481242A (en) * | 2021-12-20 | 2022-05-13 | 南通申海工业科技有限公司 | Process for electroplating acidic zinc-nickel alloy on casting |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101643926B (en) | Non-cyanide pre-plating copper plating solution | |
| CN112609212A (en) | Zinc-nickel alloy electroplating process for part with spinning surface | |
| US2654701A (en) | Plating aluminum | |
| CN111778532A (en) | Alkaline zinc-nickel electroplating method for lock ring and embedded ring of automobile fuel tank | |
| CN101922031B (en) | Double-plating steel belt and plating process | |
| CN114232040A (en) | Nickel-phosphorus alloy electroplating solution and electroplating method | |
| CN109056008A (en) | Alkaline zinc-nickel alloy electroplating solution and preparation method thereof | |
| US2075623A (en) | Zinc plating | |
| GB1122795A (en) | Improvements in corrosion-resisting decorative chromium electrolytic deposits | |
| US2457061A (en) | Method for bonding a nickel electrodeposit to a nickel surface | |
| US4400248A (en) | Electrolytic stripping process | |
| US2069566A (en) | Nickel plating solutions and processes | |
| KR101856587B1 (en) | Plating method of alkaline zinc nickel | |
| US20060254923A1 (en) | Low hydrogen embrittlement (LHE) zinc-nickel plating for high strength steels (HSS) | |
| CN104233296A (en) | Method for silvering aluminum and aluminum alloy | |
| US3689380A (en) | Process for acid copper plating of steel | |
| CN114016100A (en) | Preparation method of super-hard wear-resistant electroplating coating on surface of MEMS probe | |
| CN109295483B (en) | Insulation protection method for copper-plated part | |
| CN1384225A (en) | Ferro-nickel alloy electroplating process for copper plate working surface of continuously casting crystallizer | |
| KR100402730B1 (en) | Method process for forming copper and nickel-plated of electrolytic plating in magnesium compound | |
| CN111945194A (en) | Nickel alloy electroplating solution and electroplating method | |
| CN105525319A (en) | Method for treatment in electroplating process | |
| CN105803463B (en) | A kind of preprocess method of the copper particle for electrosilvering | |
| JP3466229B2 (en) | Tin plating method | |
| KR100528638B1 (en) | Plating Process of Nickel on Magnesium Alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210406 |
|
| RJ01 | Rejection of invention patent application after publication |