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electrocoating

Electrocoating More Information  
To fully understand the benefits of electrocoating, it is necessary to understand the mechanics of the process. We use gray oxide primer carefully balanced with resins, pigments and corrosion inhibiting agents. As processed, resins are water insoluble and must be converted chemically into salts that are easily dispersed into the water.

In electrocoating, our tanks are filled with this water dispersion of paint. The paint particles have a negative surface charge due to the salt formation. The structural members to be painted are connected to the positive side of a powerful DC power supply, giving them a positive charge. The tank itself is wired to the negative side of the power source. When the power supply is activated, the current flows from the negatively charged tank to the positively charged structural steel, causing the negatively charged paint particles to migrate to the steel and be plated to the surface.

During this plating process, taking one to two minutes, electro-chemical reactions take place on the surface of the structural parts, changing the salts in the paint back to their original acid state. The voltages involved (200-300 VDC) act as a kind of electronic pressure to densify the resin, resulting in a paint film not only water insoluble, but virtually 100% solid.

After coating, the parts are baked in an oven, converting the paint films to an enamel composition that is hard, abrasive resistant and it's with this process, superior corrosion resistance is achieved.

Chief Electrocoating penetrates virtually everywhere, leaving a uniform coating of corrosion-resistant enamel. uniform electrocoated enamel
Electrical attraction causes negatively charged paint particles to be attracted to positively charged structural steel, forming a smooth, even finish. Electrocoated smooth finish
Oven baking fuses the paint into a hard, abrasion and corrosion resistant enamel film. Corrosion resistant, electrocoated metal structures

 

CURED FILM PROPERTIES

COLOR CHIEF GRAY OXIDE
GLOSS 45-55 @ 60°
FILM THICKNESS .8-1.1 MILS
MEK RUBS 100+
PENCIL HARDNESS 2H
MAR RESISTANCE EXCELLENT
CROSS HATCH ADHESION 100%
REVERSE/DIRECT IMPACT 80 INCH/POUNDS
1/8 CONICAL MANDREL PASS
18 HR DI WATER SOAK PASS
4 HR HYDROCARBON SOAK PASS
150 HOURS SALT SPRAY 3/4 INCH CREEP
HUMIDITY RESISTANCE 1,000+ HOURS

 

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