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topic 10459

Tarnishing problem on Tin Plating wire


I am doing Tin plating. I need a procedure for protecting tarnishing of Tin plating. Please let me know. My tin plating process(post-treatment) Tin plating - rinsing(2) - dipping in a solution Na3PO4 - rinsing(2) - skin pass - dipping in a solution Stearic acid - drying - coil

HyunHee Kim
- Korea


I have the same problem and am interested in a remedy. We use the same process but on small cast iron disks we do not use the Stearic acid.

Jack Shwaller
Morgan AM & T - Houston Texas

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