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3D Plus™ Electrocoating

Electrocoating 3D Printed Parts

Electrocoating, or e-coating, is a method used to apply a smooth, even layer of paint or coating to 3D printed parts. The process involves dipping the parts into a water-based coating solution and then running an electric current through them. The current causes the paint particles to adhere uniformly to the part's surface, creating a durable, corrosion-resistant finish.

What is electrocoating?

Electrocoating is a finishing process used to apply a uniform, durable coating to a variety of surfaces, including 3D printed parts.

It involves immersing the part in a water-based coating solution and using an electric current to deposit the coating particles onto the surface.

E-coating creates a smooth, uniform coating with excellent corrosion resistance and aesthetics.

Electrocoating is particularly beneficial for complex geometries, ensuring every nook and cranny is thoroughly coated.

The Advantages of Electrocoating

1. Ensures an even coating on complex geometries and hard-to-reach areas.

2. Provides a tough, corrosion-resistant finish that prolongs the lifespan of parts.

3. Minimizes waste as the process recycles excess paint.

4. Offers a smooth, attractive finish available in various colors.

5. Uses water-based paints, reducing harmful emissions compared to solvent-based paints.

Electrocoating Process

1. Surface Preparation: Parts are cleaned to remove any contaminants, ensuring optimal adhesion of the coating.

2. Electrocoating Bath: The parts are immersed in a water-based paint solution. An electric current is then applied, causing the paint particles to migrate and adhere to the part's surface.

3. Rinsing: Excess paint is rinsed off to prevent defects and ensure a smooth finish.

4. Curing: The coated parts are baked in an oven to harden the paint, resulting in a durable, corrosion-resistant finish.

Quality Inspection Process

Check out the quality inspection process of electrocoated parts at 3DSPRO.

Visual Inspection
Examine the parts for any surface defects such as bubbles, uneven coating, or runs.

Thickness Measurement
Use tools like micrometers or ultrasonic gauges to measure the coating thickness and ensure it meets the specified standards.

Adhesion Test
Perform cross-hatch or peel tests to verify that the coating adheres properly to the substrate.

Curing Confirmation
Check that the parts have been adequately cured by performing hardness tests or using specific curing indicators.

Color Consistency Check
Ensure uniform color throughout the parts using colorimetric tools.

Corrosion Resistance Test
Conduct salt spray tests or other corrosion tests to verify the protective quality of the coating.

FAQs

Check out the frequently asked questions of electrocoating.

What types of 3D printed materials can be electrocoated? -

Electrocoating works best with conductive materials, like metal 3D prints or those treated with a conductive primer.
How does electrocoating compare to other finishing methods?+

It provides uniform coverage, superior corrosion resistance, and durability compared to spray painting. It's especially effective for complex geometries.
Can electrocoating be applied to parts with intricate details?+

Absolutely. The process ensures even coverage, making it ideal for parts with complex shapes and fine details.
Does electrocoating add thickness to 3D printed parts?+

Yes, electrocoating adds a thin layer to the parts, typically ranging from 15 to 35 microns, which should be considered in precision applications.
Is electrocoating environmentally friendly?+

Yes, it uses water-based paints, reducing VOC emissions and making it more eco-friendly compared to solvent-based painting methods.

Previous: Dyeing

Next: Electroplating

to get the paint Color Chart.

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Can 3D Printing Help Me?

Capabilities

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3D Plus™ Electrocoating

Electrocoating 3D Printed Parts

What is electrocoating?

The Advantages of Electrocoating

Electrocoating Process

Quality Inspection Process

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