E-coat

2009-08-16T00:33:00.000-07:00

This technology leaves a metal part or a component with an organic finish by electrically depositing paint on it. This works on the simple principle of ‘OppositesAttract’.

The Cathodic Epoxy Electro coating process is outlined in brief detail here.
A DC charge is applied to a metal component immersed in a bath comprising of oppositely charged paint particles. The paint particles deposit on the component to a point where the coating reaches the desired thickness and an even, continuous film is formed over every surface, crevice and corner. On attaining desired thickness, the film insulates, resulting in stopping of attraction between paint particle and the component, thus completing the process. Depending upon the end use, you can choose either protective, decorative or a combination electro coating.
Types of Electrocoat

1.Anodic
2.Cathodic

ELECTROCOATING VS POWDER COATING AND LIQUID SPRAYS

ENVIRONMENTAL ADVANTAGE
- Eco-friendly
- Free of heavy metal with little or no Hazardous Air Pollutants (HAPS)
and very low levels of organic solvents.
- Being water based coatings, they have very low Volatile Organic
Compounds (VOC),ranging from 0.012 kg per litre up to 0.360 kg per
litre with most products below 0.120 kg per litre.
- Practically no solid waste
- No fire hazard.
- Electrocoat is a clean system not requiring any disposable suits,
respirators, and other safety equipment to protect workers from airborne
hazards.

TECNO-ECONOMIC ADVANTAGE
- Cathodic Epoxy Electrocoating is highly corrosion resistant. A 20-micron
dry film thickness can withstand as much as 1000 hours salt spray test.
- Uniform Coating: Electrocoating has the ability to give very even
coating with variances ranging to only 1-2 microns.
- Coating of Complex Parts: Electrocoat system has the versatility to coat
highly recessed and complex surfaces, which are not amenable to
powder coating or liquid spray system.
- Higher Transfer Efficiency: The process being a closed loop process
allows transfer efficiency of more than 95%, with much reduced waste
water streams.
- Very Low Incidence of Rejects: Being electronically controlled, human
errors play a very little role thus minimizing rejection rates which could
be as low as zero.
- No special skills required for handling the plant and production.
- Higher Productivity: No other paint system can match the through-put
capacity of an electrocoat system.
- Quality Edge: As Electrocoat films are controlled by voltage adjustments
the deposition stops, once the metal is insulated. No other organic
coating system can be controlled with the film uniformity as in
Electrocoating system.
- Ease in Handling: Even the uncured paint is dry enough to allow human
touch and careful handling.