Methods of Anodizing

Continuous Coil Anodizing

Sheet Anodizing

Batch or Piece Anodizing

Uses

High volume, coiled sheet, foil, products with less severe forming.

Uses

Wide widths, plate, large fabricated products.

Uses

Extrusions, castings, parts with severe forming.

Advantages

• Wide range of metal and film thicknesses
• Less material handling
• Precise color control and uniformity
• Cost effective

Advantages

• Small runs
• Thicker films
• Anodized edges

Advantages

• Small runs
• Thicker films
• Anodized edges

Disadvantage

• Bare edges on stamped parts
• Crazing when severely formed
• Limited to sheet and foil

Disadvantages

• Color variance
• High costs
• Film thickness variance
• Crazing when severely formed

Disadvantages

• Color variance
• Excessive handling
• High costs

^*Coil anodizing involves
continuous unwinding of coils
through a series of anodizing tanks
and then rewinding.

^*Sheet anodizing involves
racking or framing of sheets
and immersing them in large tanks.

^*Piece anodizing involves
racking parts and immersing them
in a series of treatment tanks