CN105506688A - Preparation process of acid-base compound Magni coating - Google Patents
Preparation process of acid-base compound Magni coating Download PDFInfo
- Publication number
- CN105506688A CN105506688A CN201610047571.XA CN201610047571A CN105506688A CN 105506688 A CN105506688 A CN 105506688A CN 201610047571 A CN201610047571 A CN 201610047571A CN 105506688 A CN105506688 A CN 105506688A
- Authority
- CN
- China
- Prior art keywords
- coating
- workpiece
- plating
- magni
- potassium chloride
- 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
- 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
-
- 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
- C25D3/22—Electroplating: Baths therefor from solutions 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
- C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel
-
- 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
- C25D5/48—After-treatment of electroplated surfaces
Abstract
The invention discloses a preparation process of an acid-base compound Magni coating and relates to a metal surface antiseptic treatment process. The preparation process comprises the procedure of pretreatment conducted before coating, preparation of the coating and treatment conducted after coating, wherein the procedure of preparation of the coating comprises the steps of firstly, conducting potassium chloride galvanization on the surface of a workpiece, and then conducting zincate galvanization, wherein the steps of 21, potassium chloride galvanization, 22, washing III, 23, zincate galvanization, 24, washing IV, 25, film removal and 26, washing V are included; the procedure of treatment conducted after coating comprises the steps of 31, ultralow chromium passivation, 32, washing VI and 33, drying. According to the preparation process of the acid-base compound Magni coating, the potassium chloride galvanization process and the zincate galvanization process are combined together, product quality can be well stabilized, production efficiency is greatly improved, production line operation cost is lowered, the coating on the surface of a product prepared through the preparation process is uniform, surface quality is good, the preparation process has the advantages that the coating speed is high, drying can be conducted easily, product defects are few, the service life of the product is prolonged, the ultralow chromium passivation process is adopted, sewage treatment cost is lowered, and the preparation process is easy to use and popularize.
Description
Technical field
The present invention relates to a kind of metal surface anticorrosive treatment process, particularly a kind of preparation technology of soda acid compound Magni coating.
Background technology
Metal surface anticorrosive treatment process can affect quality and the work-ing life of every engineering and product.Worldwide each surface treatment expert is devoted to research and development always can provide corrosion-resistant for a long time and can reduce again the cost consumed in corrosion engineering, and its cost is mainly reflected in: cost of labor, reagent cost and cost of sewage disposal.
Zincincation common is at present as follows: upper extension → high-temperature electrolysis oil removing → washing → sour electrolysis → activation → washing → common is zinc-plated → washing → membrane removal → washing → high chromium passivating → washing → oven dry, this technique for product mainly some punching press plates and the simple turning part of structure.Its coating performance is also to meet some common requirements, and product line running cost is higher, and sewage disposal difficulty is larger.Require situation also more and more higher to the various performance requirement of product on more and more higher and market for current sewage discharge, it just can not meet the demands substantially.
In addition, potassium chloride zinc plating process comparatively common on the market at present, zincate galvanizing technique, for exotic materials and baroque workpiece, more difficultly overcome following problem:
1. in potassium chloride zinc plating process, its zinc layers structure is column crystallization and upper plating speed is fast, but its coating dispersive ability is poor, and product surface zinc coating is very uneven, product low district zinc coating thickness is thinner, easy to change and be difficult to reach its salt fog performance requriements after product passivation.
2. and in zincate galvanizing technique, the crystallization of zincate galvanizing layer is tabular crystal, but its current efficiency is low, and upper plating speed is slow, production efficiency is low, be difficult to upper plating or substantially upper plating for ironcasting loose and porous structure, when drying due to the easy Zang Shui of loose pore volume of ironcasting and mouldy, its oven dry is more difficult, high chromium passivation film is made to be difficult to parch, more easily turn white, mouldy, cause product quality defect more, can not play the advantage that its leveling ability is good completely.
3., after product surface plates zinc, the high chromium passivating of use, more and more higher for current environmental requirement, it considerably increases sewage disposal difficulty.
Summary of the invention
The technical problem to be solved in the present invention is: the preparation technology providing a kind of soda acid compound Magni coating, to solve, the product line generalization running cost that prior art exists is high, zinc coating is uneven, after product passivation easy to change, upper plating speed slow, dry difficulty, the weak point that product defects is many, sewage disposal difficulty is large.
The technical scheme solved the problems of the technologies described above is: a kind of preparation technology of soda acid compound Magni coating, comprise Pre-treatment before plating, the preparation of coating, plating posttreatment, the preparation of described coating is after first carrying out Potassium Chloride Zinc Plating on the surface of the workpiece, then carries out zincate galvanizing.
Further technical scheme of the present invention is: the preparation of described coating comprises the steps:
S21. Potassium Chloride Zinc Plating: Potassium Chloride Zinc Plating is carried out to the workpiece after Pre-treatment before plating;
S22. III is washed;
S23. zincate galvanizing: zincate galvanizing is carried out to the workpiece after Potassium Chloride Zinc Plating and washing;
S24. IV is washed;
S25. membrane removal;
S26. V is washed.
Further technical scheme more of the present invention is: in described step S21, the each component of electroplate liquid of Potassium Chloride Zinc Plating and content thereof are respectively: zinc chloride 40 ~ 80g/L, Repone K 180 ~ 250g/L, boric acid 25 ~ 35g/L, temperature 25 ~ 50 DEG C, current density 0.1 ~ 2A/dm
2, 15 ~ 25 minutes time.
Further technical scheme more of the present invention is: in described step S23, the each component of electroplate liquid of zincate galvanizing and content thereof are respectively: zine ion: 7 ~ 15g/L, sodium hydroxide: 120 ~ 150g/L, plating conditions is: temperature 20 ~ 30 DEG C, current density 0.1 ~ 2A/dm
2, 15 ~ 25 minutes time.
Further technical scheme of the present invention is: described Pre-treatment before plating comprises the steps:
S11. upper extension: will workpiece be hung on automatic production line;
S12. oil removing: the workpiece on automatic production line is carried out high-temperature electrolysis oil removing in degreasing fluid;
S13. I is washed: with tap water, workpiece is cleaned;
S14. sour electrolysis: the oxide film on workpiece surface is removed in sour electrolysis;
S15. activate;
S16. II is washed: with tap water, workpiece is cleaned.
Further technical scheme more of the present invention is: described plating posttreatment comprises the steps:
S31. ultra-low passivation;
S32. VI is washed;
S33. dry.
Further technical scheme more of the present invention is: in described step S31, the passivating solution composition of ultra-low passivation and content thereof are: chromium ion 0.8
~1.5g/L, oxygenant 0.4
~0.5g/L, promotor 0.3
~0.5g/L, buffer reagent 4
~5g/L.
Further technical scheme more of the present invention is: described oxygenant is the one or wherein several in hydrogen peroxide, nitrate, halate, and promotor is the organic or inorganic negatively charged ion for adjusting film forming color, and this organic or inorganic negatively charged ion comprises Cl
-, F
-, SO
4 2-, PO
4 3-, NO
3 -one or more in ion, described buffer reagent comprises HAc, Ac
-one or both in ion.
Owing to adopting said structure, the preparation technology of the soda acid compound Magni coating of the present invention compared with prior art, has following beneficial effect:
1. produce line generalization running cost low:
Magni (English is magniengineeringcoatingsystem) is that collection kinds of processes resource develops a kind of technique.Magni preservative system to be coated with by face containing zinc, aluminum coating filling product surface imperfection by primary coat to provide lubrication, the function such as corrosion-resistant, attractive in appearance and a kind of compound technology of being formed again, it combines the advantage of each technique, and mutually overcome the shortcoming of each technique, thus reach the feature of high-performance, high request.And the present invention has accepted its feature, according to the feature of each zincincation operation again in conjunction with the characteristic of this body structure of ironcasting, the columnar crystal structure adopting Potassium Chloride Zinc Plating layer to be formed fills hole and the defect of Cast Iron Surface, the tabular crystal structure adopting zincate galvanizing layer to be formed again covers in column zinc layers, cover the whole product surface of leveling, make product surface be covered by zinc layers completely and ensure that coating is even.Therefore, the present invention, by potassium chloride zinc plating process, zincate galvanizing technique being combined dexterously, compensate for respective defect, has played respective advantage, the good stabilized product quality of energy also substantially increases production efficiency, produces line running cost from reducing to a great extent.
2. product surface coating is even, and product surface quality is good:
Because the present invention is hole and defect that the columnar crystal structure adopting Potassium Chloride Zinc Plating layer to be formed fills Cast Iron Surface, the tabular crystal structure adopting zincate galvanizing layer to be formed again covers in column zinc layers, cover the whole product surface of leveling, product surface is made to be covered by zinc layers completely and ensure that coating is even, overcome the shortcoming that product low district zinc coating thickness is thinner, product surface quality is better, and can reach salt fog performance requriements completely.
3. speed of plating on is fast, and production efficiency is high:
Because the present invention is hole and defect that the columnar crystal structure adopting Potassium Chloride Zinc Plating layer to be formed fills Cast Iron Surface, the tabular crystal structure adopting zincate galvanizing layer to be formed again covers in column zinc layers, cover the whole product surface of leveling, make product surface be covered by zinc layers completely and ensure that coating is even.Therefore, potassium chloride zinc plating process, zincate galvanizing technique combine by the present invention, have given full play to the feature that on potassium chloride zinc plating process, plating speed is fast, production efficiency is high.
4. oven dry is easy, product defects is few:
The columnar crystal structure adopting Potassium Chloride Zinc Plating layer to be formed due to the present invention fills hole and the defect of Cast Iron Surface, the tabular crystal structure adopting zincate galvanizing layer to be formed again covers on the Potassium Chloride Zinc Plating layer of column, cover the whole product surface of leveling, product surface is made to be covered by zinc layers completely and ensure that coating is even, ensure that the loose hole of ironcasting is filled better and ensures that absence of liquid remains in loose hole, difficulty is reduced to follow-up oven dry, avoid the high chromium passivation film caused because baking does not do to turn white, Signs of Mould, product defects is few, substantially increase product once to roll off the production line qualification rate.
5. environmental protection, decreases cost of sewage disposal:
Due to the present invention's employing is ultra-low passivation technique, its chromium content is 1/5th of traditional low chromium passivating formula, especially traditional high chromium passivating formula more than 1/150th, greatly reduce the usage quantity of Cr materials, improve work on the spot environment preferably, also greatly reduce passivation cost and cost of sewage disposal.
6. can extend the work-ing life of product:
After the present invention uses Potassium Chloride Zinc Plating bottoming, zincate galvanizing plates difficult problem can be readily solved, it be adopt zinc-plated mode on zinc instead of before cast iron on zinc-plated, apply the advantage of two techniques well, and mutually compensate for the shortcoming existed separately, finally can improve the properties of product, extend the work-ing life of product.
Below, in conjunction with the accompanying drawings and embodiments the technical characteristic of the preparation technology of the soda acid compound Magni coating of the present invention is further described.
Accompanying drawing explanation
Fig. 1: the cross section enlarged diagram before cast iron part plating,
Fig. 2: the cross section enlarged diagram of cast iron part after preparation technology's plating of the soda acid compound Magni coating of the present invention,
In figure, each label declaration is as follows:
1-cast iron part, the rough surface of 101-, 2-Potassium Chloride Zinc Plating layer, 3-zincate galvanizing layer.
Embodiment
embodiment one:
A preparation technology for soda acid compound Magni coating, comprises Pre-treatment before plating, the preparation of coating, plating posttreatment, and the preparation of described coating is after first carrying out Potassium Chloride Zinc Plating on the surface of the workpiece, then carries out zincate galvanizing.Wherein: described Pre-treatment before plating comprises the steps:
S11. upper extension: will workpiece be hung on automatic production line;
S12. oil removing: the workpiece on automatic production line is carried out high-temperature electrolysis oil removing in degreasing fluid;
S13. I is washed: with tap water, cleaning is carried out 2 times to workpiece;
S14. sour electrolysis: the oxide film on workpiece surface is removed in sour electrolysis;
S15. activate;
S16. II is washed: with tap water, cleaning is carried out 3 times to workpiece.
The preparation of described coating comprises the steps:
S21. Potassium Chloride Zinc Plating: Potassium Chloride Zinc Plating is carried out to the workpiece after Pre-treatment before plating, each component of electroplate liquid of Potassium Chloride Zinc Plating and content thereof are respectively: zinc chloride 40g/L, Repone K 180g/L, boric acid 25g/L, temperature 25 DEG C, current density 0.1A/dm2,15 minutes time;
S22. III is washed;
S23. zincate galvanizing: zincate galvanizing is carried out to the workpiece after Potassium Chloride Zinc Plating and washing, the each component of electroplate liquid of zincate galvanizing and content thereof are respectively: zine ion: 7g/L, sodium hydroxide: 120g/L, and plating conditions is: temperature 20 DEG C, current density 0.1A/dm2,15 minutes time;
S24. IV is washed;
S25. membrane removal;
S26. V is washed.
Described plating posttreatment comprises the steps:
S31. ultra-low passivation: the passivating solution composition of ultra-low passivation and content thereof are: chromium ion 0.8g/L, oxygenant 0.4g/L, promotor 0.3g/L, buffer reagent 4g/L; Wherein: oxygenant is the one or wherein several in hydrogen peroxide, nitrate, halate, and promotor is the organic or inorganic negatively charged ion for adjusting film forming color, and this organic or inorganic negatively charged ion comprises Cl
-, F
-, SO
4 2-, PO
4 3-, NO
3 -one or more in ion, described buffer reagent comprises HAc, Ac
-one or both in ion;
S32. VI is washed;
S33. dry.
embodiment two:
A preparation technology for soda acid compound Magni coating, comprises Pre-treatment before plating, the preparation of coating, plating posttreatment, and the preparation of described coating is after first carrying out Potassium Chloride Zinc Plating on the surface of the workpiece, then carries out zincate galvanizing.Wherein: described Pre-treatment before plating comprises the steps:
S11. upper extension: will workpiece be hung on automatic production line;
S12. oil removing: the workpiece on automatic production line is carried out high-temperature electrolysis oil removing in degreasing fluid;
S13. I is washed: with tap water, cleaning is carried out 3 times to workpiece;
S14. sour electrolysis: the oxide film on workpiece surface is removed in sour electrolysis;
S15. activate;
S16. II is washed: with tap water, cleaning is carried out 3 times to workpiece.
The preparation of described coating comprises the steps:
S21. Potassium Chloride Zinc Plating: carry out Potassium Chloride Zinc Plating to the workpiece after Pre-treatment before plating, each component of electroplate liquid of Potassium Chloride Zinc Plating and content thereof are respectively: zinc chloride 80g/L, Repone K 250g/L, boric acid 35g/L, temperature 50 C, current density 2A/dm
2, 25 minutes time;
S22. III is washed;
S23. zincate galvanizing: zincate galvanizing is carried out to the workpiece after Potassium Chloride Zinc Plating and washing, the each component of electroplate liquid of zincate galvanizing and content thereof are respectively: zine ion: 15g/L, sodium hydroxide: 150g/L, plating conditions is: temperature 30 DEG C, current density 2A/dm
2, 25 minutes time;
S24. IV is washed;
S25. membrane removal;
S26. V is washed.
Described plating posttreatment comprises the steps:
S31. ultra-low passivation: the passivating solution composition of ultra-low passivation and content thereof are: chromium ion 1.5g/L, oxygenant 0.5g/L, promotor 0.5g/L, buffer reagent 5g/L; Wherein: oxygenant is the one or wherein several in hydrogen peroxide, nitrate, halate, and promotor is the organic or inorganic negatively charged ion for adjusting film forming color, and this organic or inorganic negatively charged ion comprises Cl
-, F
-, SO
4 2-, PO
4 3-, NO
3 -one or more in ion, described buffer reagent comprises HAc, Ac
-one or both in ion;
S32. VI is washed;
S33. dry.
embodiment three:
A preparation technology for soda acid compound Magni coating, comprises Pre-treatment before plating, the preparation of coating, plating posttreatment, and the preparation of described coating is after first carrying out Potassium Chloride Zinc Plating on the surface of the workpiece, then carries out zincate galvanizing.Wherein: described Pre-treatment before plating comprises the steps:
S11. upper extension: will workpiece be hung on automatic production line;
S12. oil removing: the workpiece on automatic production line is carried out high-temperature electrolysis oil removing in degreasing fluid;
S13. I is washed: with tap water, cleaning is carried out 2 times to workpiece;
S14. sour electrolysis: the oxide film on workpiece surface is removed in sour electrolysis;
S15. activate;
S16. II is washed: with tap water, cleaning is carried out 2 times to workpiece.
The preparation of described coating comprises the steps:
S21. Potassium Chloride Zinc Plating: carry out Potassium Chloride Zinc Plating to the workpiece after Pre-treatment before plating, each component of electroplate liquid of Potassium Chloride Zinc Plating and content thereof are respectively: zinc chloride 50g/L, Repone K 200g/L, boric acid 28g/L, temperature 30 DEG C, current density 0.5A/dm
2, 20 minutes time;
S22. III is washed;
S23. zincate galvanizing: zincate galvanizing is carried out to the workpiece after Potassium Chloride Zinc Plating and washing, the each component of electroplate liquid of zincate galvanizing and content thereof are respectively: zine ion: 10g/L, sodium hydroxide: 130g/L, plating conditions is: temperature 22 DEG C, current density 0.5A/dm
2, 18 minutes time;
S24. IV is washed;
S25. membrane removal;
S26. V is washed.
Described plating posttreatment comprises the steps:
S31. ultra-low passivation: the passivating solution composition of ultra-low passivation and content thereof are: chromium ion 1.0g/L, oxygenant 0.45g/L, promotor 0.4g/L, buffer reagent 4.5g/L; Wherein: oxygenant is the one or wherein several in hydrogen peroxide, nitrate, halate, and promotor is the organic or inorganic negatively charged ion for adjusting film forming color, and this organic or inorganic negatively charged ion comprises Cl
-, F
-, SO
4 2-, PO
4 3-, NO
3 -one or more in ion, described buffer reagent comprises HAc, Ac
-one or both in ion;
S32. VI is washed;
S33. dry.
embodiment four:
A preparation technology for soda acid compound Magni coating, comprises Pre-treatment before plating, the preparation of coating, plating posttreatment, and the preparation of described coating is after first carrying out Potassium Chloride Zinc Plating on the surface of the workpiece, then carries out zincate galvanizing.Wherein: described Pre-treatment before plating comprises the steps:
S11. upper extension: will workpiece be hung on automatic production line;
S12. oil removing: the workpiece on automatic production line is carried out high-temperature electrolysis oil removing in degreasing fluid;
S13. I is washed: with tap water, cleaning is carried out 2 times to workpiece;
S14. sour electrolysis: the oxide film on workpiece surface is removed in sour electrolysis;
S15. activate;
S16. II is washed: with tap water, cleaning is carried out 5 times to workpiece.
The preparation of described coating comprises the steps:
S21. Potassium Chloride Zinc Plating: carry out Potassium Chloride Zinc Plating to the workpiece after Pre-treatment before plating, each component of electroplate liquid of Potassium Chloride Zinc Plating and content thereof are respectively: zinc chloride 70g/L, Repone K 220g/L, boric acid 30g/L, temperature 40 DEG C, current density 1.5A/dm
2, 23 minutes time;
S22. III is washed;
S23. zincate galvanizing: zincate galvanizing is carried out to the workpiece after Potassium Chloride Zinc Plating and washing, the each component of electroplate liquid of zincate galvanizing and content thereof are respectively: zine ion: 10g/L, sodium hydroxide: 140g/L, plating conditions is: temperature 28 DEG C, current density 0.15A/dm
2, 25 minutes time;
S24. IV is washed;
S25. membrane removal;
S26. V is washed.
Described plating posttreatment comprises the steps:
S31. ultra-low passivation: the passivating solution composition of ultra-low passivation and content thereof are: chromium ion 1.2g/L, oxygenant 0.48g/L, promotor 0.45g/L, buffer reagent 4.8g/L; Wherein: oxygenant is the one or wherein several in hydrogen peroxide, nitrate, halate, and promotor is the organic or inorganic negatively charged ion for adjusting film forming color, and this organic or inorganic negatively charged ion comprises Cl
-, F
-, SO
4 2-, PO
4 3-, NO
3 -one or more in ion, described buffer reagent comprises HAc, Ac
-one or both in ion;
S32. VI is washed;
S33. dry.
In embodiment one to four, the present invention is hole and the defect that the columnar crystal structure adopting Potassium Chloride Zinc Plating layer to be formed fills Cast Iron Surface, the tabular crystal structure adopting zincate galvanizing layer to be formed again covers on column Potassium Chloride Zinc Plating layer, cover the whole product surface of leveling, product surface is covered by zinc layers completely and ensures that coating evenly (see Fig. 2).Therefore, adopt the present invention mutually to compensate for potassium chloride zinc plating process, zincate galvanizing technique defect separately, play respective advantage, finally improve properties, improve the work-ing life of product.
In addition, step S31 described in embodiment one to four belongs to ultra-low passivation technique in the multicolored passivation of tradition, its chromium content is 1/5th of traditional low chromium passivating formula, especially traditional high chromium passivating formula more than 1/150th, greatly reduce the usage quantity of Cr materials, improve work on the spot environment preferably and greatly reduce passivation cost and cost of sewage disposal.
Claims (8)
1. a preparation technology for soda acid compound Magni coating, comprises Pre-treatment before plating, the preparation of coating, plating posttreatment, it is characterized in that: the preparation of described coating is after first carrying out Potassium Chloride Zinc Plating on the surface of the workpiece, then carries out zincate galvanizing.
2. the preparation technology of soda acid compound Magni coating according to claim 1, is characterized in that: the preparation of described coating comprises the steps:
S21. Potassium Chloride Zinc Plating: Potassium Chloride Zinc Plating is carried out to the workpiece after Pre-treatment before plating;
S22. III is washed;
S23. zincate galvanizing: zincate galvanizing is carried out to the workpiece after Potassium Chloride Zinc Plating and washing;
S24. IV is washed;
S25. membrane removal;
S26. V is washed.
3. the preparation technology of soda acid compound Magni coating according to claim 2, it is characterized in that: in described step S21, the each component of electroplate liquid of Potassium Chloride Zinc Plating and content thereof are respectively: zinc chloride 40 ~ 80g/L, Repone K 180 ~ 250g/L, boric acid 25 ~ 35g/L, temperature 25 ~ 50 DEG C, current density 0.1 ~ 2A/dm
2, 15 ~ 25 minutes time.
4. the preparation technology of soda acid compound Magni coating according to claim 2, it is characterized in that: in described step S23, the each component of electroplate liquid of zincate galvanizing and content thereof are respectively: zine ion: 7 ~ 15g/L, sodium hydroxide: 120 ~ 150g/L, plating conditions is: temperature 20 ~ 30 DEG C, current density 0.1 ~ 2A/dm
2, 15 ~ 25 minutes time.
5. the preparation technology of soda acid compound Magni coating according to claim 1, is characterized in that: described Pre-treatment before plating comprises the steps:
S11. upper extension: will workpiece be hung on automatic production line;
S12. oil removing: the workpiece on automatic production line is carried out high-temperature electrolysis oil removing in degreasing fluid;
S13. I is washed: with tap water, workpiece is cleaned;
S14. sour electrolysis: the oxide film on workpiece surface is removed in sour electrolysis;
S15. activate;
S16. II is washed: with tap water, workpiece is cleaned.
6. the preparation technology of the soda acid compound Magni coating according to the arbitrary claim of claim 1 to 5, is characterized in that: described plating posttreatment comprises the steps:
S31. ultra-low passivation;
S32. VI is washed;
S33. dry.
7. the preparation technology of soda acid compound Magni coating according to claim 6, it is characterized in that: in described step S31, the passivating solution composition of ultra-low passivation and content thereof are: chromium ion 0.8
~1.5g/L, oxygenant 0.4
~0.5g/L, promotor 0.3
~0.5g/L, buffer reagent 4
~5g/L.
8. the preparation technology of soda acid compound Magni coating according to claim 7, it is characterized in that: described oxygenant is the one or wherein several in hydrogen peroxide, nitrate, halate, promotor is the organic or inorganic negatively charged ion for adjusting film forming color, and this organic or inorganic negatively charged ion comprises Cl
-, F
-, SO
4 2-, PO
4 3-, NO
3 -one or more in ion, described buffer reagent comprises HAc, Ac
-one or both in ion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610047571.XA CN105506688A (en) | 2016-01-25 | 2016-01-25 | Preparation process of acid-base compound Magni coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610047571.XA CN105506688A (en) | 2016-01-25 | 2016-01-25 | Preparation process of acid-base compound Magni coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105506688A true CN105506688A (en) | 2016-04-20 |
Family
ID=55714977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610047571.XA Pending CN105506688A (en) | 2016-01-25 | 2016-01-25 | Preparation process of acid-base compound Magni coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105506688A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193245A (en) * | 2018-02-02 | 2018-06-22 | 荆大（荆州）汽车配件股份有限公司 | The compound zinc-plated production technology of steel pipe |
| CN111074313A (en) * | 2019-12-31 | 2020-04-28 | 山东九佳紧固件股份有限公司 | Wheel bolt electroplating process |
| CN114657613A (en) * | 2020-12-22 | 2022-06-24 | 苏州普热斯勒先进成型技术有限公司 | Method for manufacturing stamped parts |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056133A (en) * | 1991-06-01 | 1991-11-13 | 东北工学院 | The method of Nd-Fe-B alloys electro-galvanizing |
| DE19716375A1 (en) * | 1997-04-18 | 1998-10-22 | Alfred R Franz Fa | Two-stage zinc electroplating of metal article |
| CN102965703A (en) * | 2012-11-23 | 2013-03-13 | 沈阳工业大学 | Method for improving binding force of electro-galvanized layer on surface of neodymium-iron-boron permanent magnet |
| CN104060310A (en) * | 2014-05-26 | 2014-09-24 | 安徽红桥金属制造有限公司 | Novel zinc-plating and anti-white point corrosion process for casting parts |
| CN104213162A (en) * | 2013-06-04 | 2014-12-17 | 天津三环乐喜新材料有限公司 | Surface treatment method for zinc alloy electroplating of automobile permanent magnetic material |
-
2016
- 2016-01-25 CN CN201610047571.XA patent/CN105506688A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056133A (en) * | 1991-06-01 | 1991-11-13 | 东北工学院 | The method of Nd-Fe-B alloys electro-galvanizing |
| DE19716375A1 (en) * | 1997-04-18 | 1998-10-22 | Alfred R Franz Fa | Two-stage zinc electroplating of metal article |
| CN102965703A (en) * | 2012-11-23 | 2013-03-13 | 沈阳工业大学 | Method for improving binding force of electro-galvanized layer on surface of neodymium-iron-boron permanent magnet |
| CN104213162A (en) * | 2013-06-04 | 2014-12-17 | 天津三环乐喜新材料有限公司 | Surface treatment method for zinc alloy electroplating of automobile permanent magnetic material |
| CN104060310A (en) * | 2014-05-26 | 2014-09-24 | 安徽红桥金属制造有限公司 | Novel zinc-plating and anti-white point corrosion process for casting parts |
Non-Patent Citations (1)
| Title |
|---|
| 张允诚 等: "《电镀手册》", 31 January 2007 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193245A (en) * | 2018-02-02 | 2018-06-22 | 荆大（荆州）汽车配件股份有限公司 | The compound zinc-plated production technology of steel pipe |
| CN111074313A (en) * | 2019-12-31 | 2020-04-28 | 山东九佳紧固件股份有限公司 | Wheel bolt electroplating process |
| CN114657613A (en) * | 2020-12-22 | 2022-06-24 | 苏州普热斯勒先进成型技术有限公司 | Method for manufacturing stamped parts |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2020109205A (en) | Method for production of metal strip coated with coating of chromium and chromium oxide using electrolyte solution with trivalent chromium compound | |
| CN105506688A (en) | Preparation process of acid-base compound Magni coating | |
| CN104775142A (en) | Ultra-corrosion-resistant nickel-chromium plating component and manufacturing method thereof | |
| CN101928966B (en) | Method for plating chrome on surface of thin plate | |
| CN204589340U (en) | A kind of super anti-corrosion nickel plating-chromium parts | |
| CN105543908A (en) | Solution and method for cyanide-free alkaline bright barrel copper plating | |
| CN106191959A (en) | A kind of environment-friendly type aluminium alloy sealing agent | |
| CN102352521A (en) | Environment-friendly barrel-plating type trivalent chromium plating solution and barrel-plating method thereof | |
| CN204625811U (en) | The super anti-corrosion nickel plating-chromium parts of multilayer | |
| CN210065926U (en) | High corrosion resistance potassium chloride zinc coating structure suitable for aerospace parts | |
| CN1369577A (en) | Surface processing technology for Mg-alloy | |
| CN101407927B (en) | Alkaline zinc-plating additive and process used for cyaniding liquid plating conversion thereof | |
| CN205406569U (en) | Improve anti -corrosion performance's battery steel casing | |
| CN101660156B (en) | Silicate color passivation solution used for zinc-plating material | |
| CN103510135A (en) | Cerate composite additive and solidification liquid for copper foil surface solidification treatment and application method of cerate composite additive and solidification liquid | |
| CN103757628B (en) | A kind of formation foil production line saves the method for pure water | |
| CN205205231U (en) | Compound plating layer structure of ironcasting electro -galvanizing - nickel alloy | |
| CN102492912B (en) | Single galvanizing-10% aluminum-rare earth alloy flux and use method thereof | |
| CN103320791A (en) | Method for electroplating aluminum alloy automobile hub | |
| CN103358614A (en) | Steel sheet with stanniferous coating and preparation method thereof | |
| CN103436927B (en) | A kind of method of Alumina gel and metallic nickel ions codeposition | |
| CN107460512A (en) | A kind of stationery steel band and its manufacturing process | |
| CN101914790A (en) | Gold plating solution for preventing gold immersion | |
| CN101550573A (en) | Zinc-nickel alloy electrolyte | |
| CN205997458U (en) | A kind of waterproof anti-corrosion galvanized sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160420 |
|
| WD01 | Invention patent application deemed withdrawn after publication |