Finishing and Chemical Processing

Many processes require final finishing to enhance the mechanical properties and aesthetics of the finish part. PMF performs both mechanical and chemical finishing processes. Parts can be finished to a variety of Ra surfaces that include brushed satin finishes or mirror-like finishes to meet customer requirements.

Mechanical Finishing

Although the flowforming process naturally achieves an internal finish of 15 Ra, our finishing department is capable of providing any finish that may be required.

Chemical Finishing

Passivation

The passivation process removes free iron from the surface of nickel based alloys and provides a transparent oxide film to inhibit oxidation. PMF's passivation process is Type 7, which utilizes nitric acid baths that meet the AMS QQP35 specification.

Electropolishing

Electropolishing passes a DC current through a work piece that is submerged in a specially-designed solution. The process provides a brilliant finish by removing contaminants and bringing resident chrome to the surface to resist oxidation.

Applications include:

• Brightening

• Burr removal

• Oxide and tarnish removal

• Enhanced surface profile

• Increased corrosion resistance

• Reduced buffing and grinding costs

• Surface friction reduction

• Surface stress relieving

 For more information on PMF's finishing and chemical processing capabilities, contact us.