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Our utilizes production equipment ranging from low-volume prototypes and design work right through to high-volume computerized production lines capable of producing thousands of consistent high quality parts.

At AJECKY, we provide electrical protection coatings for many industries including the following:

Electrical Plastic Coating: Most electrical devices and components need protection from dust, liquids and accidental contact with nearby electrical components. Dip coating serves as an insulator, keeping the electrical current safely where it belongs.

Bus Bar Plastic Coating: A bus bar is used to provide a concentrated distribution of high voltage to a series of local receivers. The delivery of large amounts of electricity deserves large protection. Our bus bar coating services are used to insulate and protect voltage carrying components from arcing and shorting.

High Dielectric Coating: In high voltage applications, it is imperative to have as much insulation as possible. Our high dielectric coatings are used to protect parts, tools and components used in high voltage operations.

AJECKY performs both fluidized bed and electrostatic spray methods in an assortment of colors.

Paint Color and Process Method

Once the color is chosen, AJECKY conducts four component preparation processes prior to applying the powder coating:

1. Cleaning - AJECKY's bare or plated copper bar has already gone through a vigorous multi-step cleaning cycle. Yet, we conduct a final cleaning process prior to coating to remove all contaminants.
2. Edge Conditioning - Finished edges and burr removal promote uniform epoxy powder coating for consistent dielectric strength, and may include hand sanding, small part tumbling, and if required, a machined radius.
3. Masking - Surfaces that do not require powder coating are masked with high temperature tape. Masking is applied to each location and remains on the part until after the curing cycle. Location of the mask is a manual operation, and a liberal tolerance is recommended. If location is critical, a line will be scribed on the conductor for more precise positioning.
4. Pre-Heating - AJECKY preheats bus bars and other copper parts to enable the epoxy powder to melt, creating a sticky film that picks up more powder, quickly and evenly.

Which are the most common coatings for the electrical industry?

Plastisol is a popular dip coating for electrical equipment and tools used in electrical work, standing up to the challenges of protection in harsh environments. Epoxy, vinyl, polyolefin and nylon are also commonly used for electrical applications, applied by fluidized bed or electrostatic spray .

Why is plastic coating so effective for electrical applications?

Natural characteristics of most plastic resins make them ideal solutions for the electrical industry, including:

• Excellent insulation capabilities (high dielectric strength, low conductivity)
• Resistance to moisture, chemicals, corrosion, and oxidation
• High performance in extreme conditions
• Barrier against dust, debris, environmental contacts
• Resistance to impacts, abrasions, and other physical damage

Epoxy Powder Coated Insulation offers a high dielectric strength while creating durable insulation, impervious to most elements, and allows for closer bus bar location in a system ideal for single conductors or multiple conductor assemblies that may have numerous forms. Epoxy powder coating is also suited for insulating thick conductors, in addition to conductors with multiple electrical contact points.

Epoxy powder coating is a free-flowing, thermosetting dry powder. Think of this process as a way of "melting" paint over a bus bar's surface to create a durable, protective surface with thickness ranging from 6 to 120 mils or .006 to .120 inches. When the epoxy powder cures, a cross-link occurs increasing molecular weight and insulation capability.

Epoxy powder is chemical resistant and one of the oldest powder paints used in the electronics industry. It not only protects against corrosion but carries a high insulation rating of 800 volts per mil (.001 inches) at a minimum of 10 mil (.010 inches). Due to safety considerations, it is recommended that a Hipot test is performed rather than rely on film thickness.

Tensile strength on raw and plated copper bar is in the range of 7500 PSI. UL rating is 130 Cº. Epoxy powder coating's high dielectric strength can be varied based on the application process, thickness, and component preparation.

After you have tackled the operating environment and geometry necessary, you will want to consider power requirements to complete your design. Our team inside the Insulation and Coating center can produce the best part at the greatest value.

Industry Applications

• Electrogalvanizing
• Power Generation
• Rapid Transit
• Sub Stations
• Switchgear
• Transformers, and more...