FortWayneAnodizing Title Glow

FortWayneAnodizing Impregnation IMG

Eliminate problems in parts that do not meet porosity specs quickly and economically. Impregnation can recover parts that leak because of small manufacturing defects, minute cracks and fissures.

Porosity is usually classified in three ways:

  • Enclosed Porosity …porosity uncovered in the machining process but left untreated
  • Blind Porosity …leads to internal corrosion and marring of any finish coating
  • Through Porosity …allows leakage through the casting

These defects are usually undetectable by the human eye and become apparent during finishing. Using UV light and UV sensitive impregnation compound, air pockets and imperfections can be detected.

Impregnation is a process that uses vacuum pressure, heat, resins and polymers to penetrate and seal the micro porosity of the component.

  • Improved Containment Integrity …reduces or eliminates leakage of both gases and liquids stored or transferred through the product.
  • Reduced Testing Costs …in highly critical component applications 100 percent impregnation of parts eliminates the need for expensive leak testing of every component.
  • Reduce Scrap …bring rejected parts up to spec.
  • Eliminate “Blow Out” …entrapped gases can cause significant structural damage to parts during initial operation or even in subsequent finishing processes.
  • Improved Reliability …more and more manufactures demand impregnation of parts as a guarantee against leakage. Gain a reliability advantage over your competitors through impregnation.

Applicable to a Broad Spectrum of Materials.


 FortWayneAnodizing Title Glow

Process Description Usage Finish Properties
Impregnation A process that utilizes temperature, vacuum and/or pressure to repair or improve the reliability of porous parts.
  • Metal Castings
  • Forgings
  • Powder metal Parts
  • Plastics
Seals micro porosity in 90% to 95% of parts processed
Production Line Certification Maximum Part Size
Casting Impregnation
  • MIL-STD-276, Nonferrous Metal Castings
  • MIL-1-17563B Aluminum, Copper, Iron, Magnesium, & Zinc Castings
  • MIL-1-12857A Impreg. of Metal Castings
  • MIL-1-6869D Impreg. for Aluminum Alloy & Magnesium Alloy Castings
  • Length:
  • Width: 32"ø
  • Height: 36"
  • Weight: 500#
Process Type Impregnation
Process Method Heat/Vacuum/Infusion
Primary Advantages
  • Corrosion Resistance
  • High Wear Resistance
  • Highly Machinable
  • Uniform Coverage
Fort Wayne Anodizing Production Capacity State of the Art Impregnation Line
Max Part Size 32"ø x 36" x 500#
Max Weight 500 lbs.
Corrosive Resistance N/A
Electrical Property N/A
Galvanic Reaction No Change
Hardness N/A
Heat Resistance High
Lubricity N/A
Surface Resistance N/A
Thermal Property N/A
Thickness Penetrating to 5 mil
Uniformity Uniform Closure of Porous Openings
Wear Resistance No Change
Workability High
Tolerance Specs.
Uncolored Appearance N/A



Fort Wayne Anodizing offers both dry (vacuum & pressure) and wet (vacuum only) impregnation processes. Its impregnation capacity is one of the largest in the country. Capabilities include the flexibility to do just a few parts or long production runs. Quality and dependability are evident as several engine and automotive manufacturers as well as all branches of the Military use Fort Wayne Anodizing's impregnation services.

Large Capacity …parts measuring 32” diameter with a weight of 500 lbs can be impregnated.

Highest Quality …all steps in the process are carefully monitored and managed through a sophisticated electronic system.

Only “QPL” …approved materials are used.

95% + Recovery …that is the average recovery rate for porosity defective parts. Fort Wayne Anodizing can dramatically reduce the number of reject parts due to leaks and imperfections.