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3D Plus™ Anodizing

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Anodizing 3D Printed Aluminum Parts

Anodizing enhances the surface properties of aluminum parts by forming a durable, corrosion-resistant oxide layer. Anodizing can also add vibrant colors. Anodizing is particularly beneficial for SLM 3D printed aluminum parts.

What is anodizing?

Anodizing is an electrochemical process that enhances the surface properties of metal parts by forming a durable, corrosion-resistant oxide layer.

Anodizing involves immersing the metal, typically aluminum, in an electrolyte bath and applying an electric current, which causes the metal to form the anode of an electrolytic cell.

The resulting anodized layer improves the wear, corrosion, and chemical resistance of 3D printed metals and can also be dyed to achieve a variety of colors for aesthetic purposes.

The Advantages of Anodizing

1. Anodizing creates a protective oxide layer that significantly enhances the 3D printed aluminum’s resistance to corrosion.

2. The anodized layer is hard and abrasion-resistant, making the surface more durable and less prone to wear.

3. Anodizing allows for a variety of colors and finishes, improving the visual appeal of the metal.

4. Anodized surfaces are non-conductive, providing excellent electrical insulation.

Anodizing Process

1. Surface Preparation: Clean, blast, or polish the metal to remove impurities and create a suitable texture for the anodizing process.

2. Electrolyte Bath: The part is submerged in an acidic electrolyte solution, typically sulfuric acid, to facilitate the electrochemical reaction.

3. Anodizing: An electric current is applied, causing the metal to form the anode and creating a durable oxide layer on the surface.

4. Dyeing (Optional): The porous oxide layer can be dyed to achieve various colors for aesthetic purposes.

5. Sealing: The anodized part is sealed, often in hot water or steam, to close the pores and enhance corrosion resistance.

Types of Anodizing

Select the type of anodizing based on the requirements of the final product.

  • Color Anodizing

    Improve the wear and environmental resistance of 3D printed aluminum while achieving vivid and long-lasting color surface finishes.

    Applications

    Color anodizing is used in consumer electronics, automotive, construction, aerospace, and medical devices to improve durability and aesthetics.

  • Hard Anodizing

    Hard anodizing, also known as Type III anodizing, is an electrochemical process that creates a thick, durable, and corrosion-resistant oxide layer on the surface of aluminum. It enhances the hardness and wear resistance of 3D printed aluminum parts.

    Applications

    Hard anodizing is used in automotive, aerospace, military, marine, and medical industries for enhanced durability and corrosion resistance.

Quality Inspection Process

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

Surface
Check for any defects. Inspect for scratches due to collision.

Color
Verify if the color matches the system-indicated color.

Color Uniformity
Assess if there is uneven coloration (white showing through black, areas darker or lighter).

Dimensional Accuracy
Evaluate if the final aluminum part meets the required dimensional accuracy.

FAQs

Check out the frequently asked questions of anodizing.

  • What is anodizing?-
    Anodizing is an electrochemical process that enhances the surface of metals, particularly aluminum, by creating a durable, corrosion-resistant oxide layer.
  • What are the benefits of anodizing?+
  • How long does the anodizing process take?+
  • Is anodizing environmentally friendly?+
  • Can all types of aluminum be anodized?+

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