Chemical Processes

Sulfuric Acid Anodizing

What We Do

Sulfuric Acid Anodizing

Electrochemical process for aluminum that increases abrasion and corrosion resistance by converting the surface to a porous aluminum oxide layer.

Years of experience and R&D coupled with the industry leading PLC process controllers has resulted in process that is compatible with all aluminum alloys and surface treatments. Key process parameters automatically controlled include the chemistry temperature, ramp (include step ramps), pulsed current, pulsed voltage, current density, complex current/voltage wave forms, amp hour thickness control and part specific current/voltage recipes.

Exceptional anodizing control allows for the ability to hold thickness tolerances +/-.0001” and color matching batch to batch. The process is validated and proven reliable through a history of salt spray corrosion testing and coating weights that far exceed the MIL-SPEC requirements.

We are experts in dye and seal innovation and have standard processes for all dye formulations and sealing technologies available to the industry.

Chemical Cleaning

  • Non-etching Alkaline Cleaning
  • Non-etching Acid Cleaning
  • Caustic Etching
  • Acid Etching
  • Etching/Desmutting for high silicon alloys
  • Electropolishing
  • Chemical Polishing
  • Ultrasonic Non-etching Alkaline Cleaning

Colors/Dyes

 

#2 Lime Green

anodized aluminum

 

#4 Green

anodized aluminum

 

#6 Forest Green

anodized aluminum

 

#7 Olive Drab

anodized aluminum

 

#8 Pink

anodized aluminum

 

#9 Berry

anodized aluminum

 

#10 Dark Pink

anodized aluminum

 

#11 Purple

anodized aluminum

 

#12 Lavender

anodized aluminum

 

#13 Raspberry

anodized aluminum

 

#14 Violet

anodized aluminum

 

#15 Violet 3D

anodized aluminum

 

#16 Turquoise

anodized aluminum

 

#18 Light Blue

anodized aluminum

 

#19 Aqua Marine

anodized aluminum

 

#20 Blue

anodized aluminum

 

#21 Navy Blue

anodized aluminum

 

#22 Peach

anodized aluminum

 

#24 Brown

anodized aluminum

 

#26 Gold

anodized aluminum

 

#28 Orange

anodized aluminum

 

#30 Red

anodized aluminum

 

#32 Clear

anodized aluminum

 

#34 Medical Gray

anodized aluminum

 

#36 Black

anodized aluminum

Gloss Adjustment

  • As Machined
  • Matte
  • Sating (semi-gloss)
  • Gloss

Sealing

  • Nickel Acetate Sealing
  • Trivalent Chromate Sealing
  • Magnesium Acetate Sealing
  • Hydrothermal and Mid Temperature Seals
  • Nickel Fluoride Sealing
  • Pre-seal accelerators
  • Lithium Acetate Sealing
  • Duplex Sealing Processes
  • Deionized Water Sealing
  • Triplex Sealing Processes
  • Sodium Dichromate Sealing
  • Silicate Sealing
  • Sol Gel sealing systems
  • Polytetrafluoroethylene (PTFE)

Featured Finishes

  • Optimized cleaning cycles specific to each alloy and surface condition
  • Close tolerance (+/-.0001)
  • Compatible with all alloys
  • 5083 process

Quality Service for Engineered Performance Coatings.

Hillock Anodizing, Inc. is committed to the continuous improvement of all products and services and is determined to remain the quality leader in Hillock Anodizing, Inc’s field of expertise. Commitment to the goals of continuous improvement, customer-driven service, product quality, and employee involvement is of the utmost importance.