Anodising Technical Information

The DecoUltra AD Anodising Process

Anodising is an electrolytic surface treatment process, where the part is made anodic in an acid solution. This process doesn't just create an attractive finish, it converts the base metal to form a protective oxide coating over the exterior of the anodised part.

  • First, the part is racked on specially coated racks designed to conduct an electric current.
  • The part is chemically cleaned to remove surface contamination.
  • The part is dipped in an acid solution with an electric current running through it. The part serves as an anode (a positive charge).
  • The current releases hydrogen at the source of the negative charge and oxygen at the anode, creating a buildup of aluminium oxide on the surface of the part
  • The oxide coating grows into and out of the product, converting the surface of the material itself into a protective coating
  • The anodised part is treated in chemical baths to seal the microscopic pores created by the process

Please note: components to be anodised must be free from any inserts, screws, bolts or any other items. If these parts remain and are not made from aluminium, they will be attacked by the acids used during the process and may be damaged.

Standard Thicknesses

Using the DecoUltra AD process, which involves submerging the part at ambient temperature, surface thicknesses of up to 25 microns can be achieved.

Our standard DecoUltra AD anodising thicknesses include:

  • DecoUltra AD: 15 microns
  • DecoUltra AD+: 25 microns

For custom micron thicknesses to suit your project requirements, contact us to find out more.

To find out more about our DecoUltra ZD hard anodising technology, which results in 30+ micron finishes, click here.

NB: All our work orders are processed with a thickness tolerance. Please contact customer service to discuss your tolerance requirements.

Certifications & Accreditations

MIL-A-9625F Anodising

MIL SPEC is a US military standard to ensure products meet certain requirements for defence-related objectives. It is also a standard used by other non-defence organisations such as government, industry and technical organisations.

DecoUltra AD standard and DecoUltra ZD hard coat anodising have been tested to meet quality standard MIL-A-8625F, Type II (sulfuric acid anodising) and Type III (hard coat anodising). We ensure all our anodised aluminium passes the dye-spot test and corrosion resistance test, and meets requirements for coating weight, coating thickness and abrasion resistance.

Quality Testing, Standards and Compliance

AS/NZS ISO 9001:2015

DECO Industrial is certified compliant with AS/NZS ISO 9001:2015 for provision of metal finishing services including Powder Coating, Anodising, Hard Anodising, Electroplating, E-Coating, Chromate Conversions, Slurry Peening and Mechanical Finishing.
This certification ensures products meet stakeholder needs while meeting statutory and regulatory requirements.

ISO 14001 Environmental Management Certification

DECO is currently undergoing the certification process to attain ISO 14001 Environmental Management System Certification. This certification ensures organisations minimise the negative environmental impacts from their processes, and that their processes comply with relevant environmental laws and regulations. DECO uses a variety of sustainable practices including water recycling and solar power.

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