Dip Spin Zinc Flake Coating With Microlayer Corrosion Protection
1 Zinc Flake Coating Information
Trade Name: Zincover
Article/Model No.:JH-9382
2 Composition/information on ingredients
JH-9382 is made up of three packs: A,B and C;
Pack A: It is silver gray slurry that mainly chemically combined
with super fine flake Zn, super fine flake Al and organic additive.
Pack B: It is water solution that mainly combined with corrosion
protecion additive, particular regulator water solution etc.
Pack C: It is the tackifier of the coating which mainly made up of
cellulose white or yellowish powder.
3 Coating Process
3.1 Mix Ratio
Pack A:16.0 kg
Pack B:24.0 kg (the quantity can be increased appropriately if
spray coating)
Pack C:0-50 g (according to different viscosity demand )
3.2
| Before Mixture, Keep weighted A&B into the water bath at 25±2℃
, then stir A to make metal slurry disperse uniformly by frequency
mixer ,after A is fully evenly dispersed, reduce the agitating
speed to 60r/min, and add B. |
|
3.3
| Add B to the stirring A slowly. At the moment ,the barrel
temperature will go up,when it reaches 35℃, startup refrigerating
device to keep the barrel temperature constant at 35℃. |
|
3.4
Stir the mixture about 1~2 hours fast after B added, then add C. C
should be powdered if lump exist.(The barrel temperature should not
be lower than 30℃, otherwise C will not be dissolved sufficiently
.)Then stir 12 hours continuously.
3.5
The coating should be filtrated by 100 mesh stainless steel screen
before pouring into dip barrel.
v
3.6
Temperature control device should be equipped with dip barrel to
keep the temperature of coating at 22±2℃.(If temp. is too high, the
paint is liable to deteriorate, and viscosity will be effected.)
The coating should be stirred circularly to keep evenly dispersed.
3.7
Test Specific gravity,PH,Temperature,Viscosity of coating every 8
hours if operate continuously.
5 Technical data
| No. | Item | Data |
| 1 | PH | 3.8-5.2 |
| 2 | Cr6+ | ≥25g/L |
| 3 | Specific gravity | 1.33±0.05( spraying)1.33±0.05(dip-spin coating) |
| 4 | Viscosity | 20-60seconds(spraying) 60-80seconds(dip-spin coating) According to
the different configuration of the processing workpiece viscosity |
| 5 | Operating temperature | 20±2℃ |
6 Mix Diagram
Caution: Temperature should be controlled in above operation.
7 Packing
| Pack A: | 16kg/ Metal Barrel | Pack B: | 24kg Plastic Barrel | Pack C: | 5kg metal barrel |
(For special packaging)
10 Quality guarantee period
Before compound 6 months at 20℃
After compound 30 days at 20℃ ( It can be recycled if adding fresh
coating continuously. )
It should be stored under 20℃ if not in use.
