Demystifying the chemistry and application of chromate conversion coatings. Understand how they seal zinc plating, protect bare aluminum (Chem-Film), and why the industry transitioned from hexavalent to trivalent formulations.
Understand the hot black oxide process for steel. Learn why this conversion coating is prized for tight-tolerance tooling, and why it must always be oiled to prevent immediate rusting.
Understand the differences between Zinc, Iron, and Manganese phosphate conversion coatings. Learn how these non-metallic layers improve paint adhesion, retain lubricants, and prevent galling.