HLS Coatings （Shanghai）Co.Ltd
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Solution for the Car wipers electrophoresis paint.
Product Introduction
HLS-1701ELB/HLS-1701EG Black Cationic Epoxy Electrocoat for auto is a new generation electrophoretic coating researched and developed by HLS Paint (Shanghai) Co., Ltd. It represents modern technology of cathodic electrophoretic coating that is environment-friendly with high property and low cost. Such coating does not contain heavy metal like lead, tin, cadmium and mercury etc. It is a two-component, water-dispersed resin,meanwhile, it took in features of previous products, and can adapt galvanized steel sheet perfectly, almost can be applied to foundation coating of all metal, such as: cold and hot rolled steel sheet, galvanized steel sheet, aluminum products, zinc-aluminum alloy sheet and stainless steel sheet etc.
This product features shown below:
1.Good stability of bath can adaptable for a longer updating cycle.
2.Strong anti-corrosion properties, good salt spray resistance workpiece edge.
The main component Matrix resin:
| Solvent: alcohol ether | Additives: surface active agent, prevent shrinkage cavity agent |
| Pigment: Titanium pigment, carbon black, kaolin, antirust pigment | |
Product quality data
| Project | Technical data | Test standard | ||
| Resin (HLS-1701ELB) | Black Paste (HLS-1701EG) | |||
| Appearance | —— | Milky white liquid | Black viscous liquid,no agglomeration | Visual |
| pH | 25℃ | 6.0±1.0 | —— | GB/T 9724 |
| Conductivity | 25℃, μs/cm | 1400±600 | —— | HG/T 3334 |
| Storage stability | No stratified state, and there were no obvious difference compared to before storage | In 5-35 ℃ temperature 1 year | ||
Note: pH, conductivity measurement in the resin/pure water = 1:1 dilution
Filling tank proportion and method
⑴ Bath preparation
Ratio:
Resin 1200.00
Paste 200.00
DI water 2000.00
Total 3400.00
⑵ Ripening conditions
Sample quantity: 3000～5000g
Container: 5L (Diameter 16cm)
Tank temperature:28-30 ℃
Time: 24～48Hr
Mixed conditions: impeller diameter 8cm (speed 200rpm)
(3) Coating conditions
Experimental panel: phosphated cold-rolled steel plate
Tank temperature: 30-36℃
Pole ratio: A/C = 1/2 ~ 1/4
Distance of electrodes: 15cm
ED time: For full immersing 1-3 minutes ( 20 seconds soft start)
Baking conditions:(165-185)℃×(20-30)min (Keeping temperature of parts coated)
Bath on site management project
Good bath data and coating quality, from the strict parameters management and maintenance of equipment, production line according to its own reality time situation, can have different management project and specifications, recommend the construction parameters see the table below for reference:
| Classification | Project | Control Data | Testing frequency | |
| New bath | Anolyte | |||
| Electrophoresis tank | Ratio | 1:6 | -- | |
| Ripening time | 24-48 | -- | ||
| Solid ( 120 ℃ /1h ,% ) | 14±4 | -- | once a day | |
| PH | 5.6-6.2 | 2.0-3.5 | once a day | |
| Conductivity ( μs/cm ) | 1200±400 | 2000±1000 | once a day | |
| P/B | 0.08-0.15 | once a week | ||
| L panel | Smooth horizontal plane and vertical plane without obvious differences | once a week | ||
| Solvent content (%) | 0.5-1.2 | once a week | ||
| Liquid level Fall head (cm ) | 10-15 | once a day | ||
| ED voltage( V ) | 0-300 | once a day | ||
| Break voltage ( V ) | ≥320 | once a week | ||
| Bath temperature ( ℃ ) | 30-36 | once a day | ||
| ED time( S ) | 60-180 | once a day | ||
| UF － 1 Tank | Solid content (%) | ≤2.0 | once a day | |
| UF － 2 Tank | Solid content (%) | ≤0.8 | once a day | |
| Baking furnace | Provisions furnace temperature( ℃ ) | 170-190 | once a day | |
| Curing conditions | Drying temperature | (165-185)℃×(20-30)min (With content holding time) | once a day | |
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