Electrocoat Primer, Corrosion Protection

With electrocoating enhancing part coverage, PPG’s Aerocron electrocoat primer delivers solid corrosion protection for metal parts, and is an alternative to conventional spray primer. Providing nearly 100% product utilization, Aerocron reduces primer weight, which, in turn, enhances aircraft fuel economy while eliminating worker overspray exposure.

While electrocoating was originally produced for the automotive industry, Aerocron and this process is specific for aerospace primer application. Utilizing knowledge of the e-coat process and a thorough understanding of aerospace coatings, PPG engineers developed Aerocron electrocoat primer to meet the application needs of airframe manufacturers as well as the operating and maintenance requirements of airlines; subcontractors for commercial, military, and general-aviation aircraft; and other aircraft operators.

After pretreatment, the part enters an electrocoat dip tank where a charge is applied and the required amount of primer deposits onto the part – known as the electrocoating or electrodeposition process. Once coated, the part moves to the rinse stage, and then on for thermal curing to achieve final coating properties.

Formulated to help applicators get the most from the electrocoat process, Aerocron engineers note that the product delivers a real breakthrough for the aerospace industry in several ways:

• For aircraft manufacturers and sub-contractors, the electrocoat process can be fully automated and offers increased material utilization, making it a green choice.
• Aerocron electrocoat primer coats parts uniformly, even in the recessed areas of complex-shaped parts.
• For customers, it adds value to finished aircraft by providing better corrosion protection and lighter weight.

What is Electrocoating?
Electrocoating, also known as electrodeposition, uses electrical current to apply a coating to a conductive substrate submerged in a water-based paint bath. As a fully automated process, after pre-treatment of the part, it enters an electrocoat bath where a charge is applied and the required amount of primer deposits onto the part. Once coated, rinsing of the part ensures removal of any residual primer, and then it is off to baking at a temperature accommodating the aviation industry’s requirements.
 

Aerocron delivers nearly 100% product utilization, reduces weight on the part, and eliminates worker overspray exposure.