CN1276443A - Pre-treating process for preparing colour coated plate - Google Patents
Pre-treating process for preparing colour coated plate Download PDFInfo
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- CN1276443A CN1276443A CN 99108286 CN99108286A CN1276443A CN 1276443 A CN1276443 A CN 1276443A CN 99108286 CN99108286 CN 99108286 CN 99108286 A CN99108286 A CN 99108286A CN 1276443 A CN1276443 A CN 1276443A
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- coated plate
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- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
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Abstract
A pre-treating process for preparing colour coated plate includes such steps as removing oil and rust, weak corrosion, neutralizing, and electrolysis. Regulating the components of electrolyte and current density can generate microporous structure on surface of substrate, which has organic coatings adsorption function. Its advantages are stable process and simple operation.
Description
The present invention relates to a kind of production method of colour coated plate, specifically a kind of pre-treating process of production colour coated plate.
At present, the pre-treating process of production colour coated plate, main employing chemical treatment, its technological process is uncoiling, leveling, the decontamination oil removing, pickling, neutralization and phosphatization and cleaning, oven dry, form the phosphatize phosphate coat of one deck and substrate mortise through the metallic substrate surfaces after this method processing, because phosphatize phosphate coat has porosity, can impel varnish, the infiltration of soap solution and spindle oil, with paint higher bonding force is arranged, can be used as paint filler, but this method in process of production, needs often to adjust various compositions and the free acidity and the total acidity of phosphating solution, causes unstable product quality.
It is more easy to the purpose of this invention is to provide a kind of technological operation, can form strong adhesion, the pre-treating process of a kind of production colour coated plate of the paint filler that corrosion resistance is high.
For achieving the above object, the present invention includes following several steps: the substrate after oil removing, rust cleaning, weak corrosion and the neutralization is sent in the treating pond that electrolytic solution and conducting electric current are housed, by adjusting electrolyte prescription and current density, what make substrate surface formation and substrate mortise has adsorbing micropore structure layer to organic coating.
Substrate is uniform motion in being divided into the unitary treating pond of several separate current; The operation that forms the substrate surface micropore structure is finished by several separate current unit, the back in the treating pond.
Said electrolyte prescription is ZnO 4～10g/l, NaOH70～120g/l, and nickel complex 4～15ml/l, additive are 0.5～3ml/l, Zn/Ni 5～10/95-90, aromatic aldehyde 0.05～0.4g/l, negative electrode Ni/Zn=6/1; Cathode current density is 0.2～10A/dm
2
After substrate surface preparation work is finished, owing to adopted electrochemical method to make the substrate telogenesis form the micropore structure layer, therefore, in this process, do not need frequent detection, adjust the various compositions of electrolytic solution, thereby alleviated labor strength, improved quality product.
The present invention is done into to go up the detailed description in step below in conjunction with drawings and Examples.
Accompanying drawing is the process flow sheet of the pre-treating process of a kind of production colour coated plate of the present invention.
When using galvanized sheet as substrate, earlier with ZnO 4～10g/l, NaOH 70～120g/l, nickel complex 4～15ml/l, additive 0.5～3ml/l, Zn/Ni 5～10/95-90, the electrolysis of aromatic aldehyde 0.05～0.4g/l is poured in the treating pond, and electrolyte temperature is controlled at 15～85 ℃, cathode density is 0.2～10A/dm
2Negative electrode Ni/Zn=6/1, then, the substrate of uncoiling, leveling, cleaning, rust cleaning layer is sent in the treating pond, at this moment substrate is uniform motion in being divided into the unitary treating pond of several separate current, and by several separate current unit, the front in treating pond electro-plating method routinely, on substrate, plate one deck admiro, then, finished to form substrate surface and organic coating bonded micropore structure layer by several separate current unit, the back in the treating pond, thickness of coating is controlled at 1～12 micron.
When during as substrate, mainly being that substrate surface preparation work is different with cold gadolinium plate, i.e. uncoiling, leveling, oil removing, acid pickling and rust removing, neutralization, identical with post-treating method with the treatment process of above-mentioned galvanized sheet.
When using aluminium sheet as substrate, the surperficial preparation work of its substrate mainly is to clean, and the processing mode subsequently and the treatment process of above-mentioned galvanized sheet are too.
Claims (4)
1, a kind of pre-treating process of production colour coated plate, it is characterized in that: the substrate after oil removing, rust cleaning, weak corrosion and the neutralization is sent in the treating pond that electrolytic solution and conducting electric current are housed, by adjusting electrolyte prescription and current density, what make substrate surface formation and substrate mortise has adsorbing micropore structure layer to organic coating.
2, the pre-treating process of a kind of production colour coated plate according to claim 1 is characterized in that: substrate is uniform motion in being divided into the unitary treating pond of several separate current; The operation that forms the substrate surface micropore structure is finished by several separate current unit, the back in the treating pond.
3, the pre-treating process of a kind of production colour coated plate according to claim 1, it is characterized in that: said electrolyte prescription is ZnO 4～10g/l, NaOH 70～120g/l, nickel complex 4～15ml/l, additive 0.5～3ml/l, Zn/Ni 5～10/95-90, aromatic aldehyde 0.05～0.4g/l, negative electrode Ni/Zn=6/1.
4, the pre-treating process of a kind of production colour coated plate according to claim 1 is characterized in that: said current density is cathode current density 0.2～10A/dm
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99108286 CN1276443A (en) | 1999-06-07 | 1999-06-07 | Pre-treating process for preparing colour coated plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99108286 CN1276443A (en) | 1999-06-07 | 1999-06-07 | Pre-treating process for preparing colour coated plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1276443A true CN1276443A (en) | 2000-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99108286 Pending CN1276443A (en) | 1999-06-07 | 1999-06-07 | Pre-treating process for preparing colour coated plate |
Country Status (1)
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| CN (1) | CN1276443A (en) |
Cited By (1)
| 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 |
-
1999
- 1999-06-07 CN CN 99108286 patent/CN1276443A/en active Pending
Cited By (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 |
| CN103290442B (en) * | 2013-06-13 | 2016-05-18 | 南通市申海工业技术科技有限公司 | Zn-ni Alloy Plating |
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Addressee: Luo Lieming Document name: Notice of first review |
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