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Letter 38069
How to prevent metal chips on the air
pocket/emboss of the material?
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I'm handling copper nickel barrel plating somewhere in
Philippines. Our prevailing rejection is metal chips that occurred
mostly on the inside portion of the emboss/air pocket. we've done so
many countermeasures such as cleaning of copper and nickel tank,
electrotreatment,renewed the degreasing solution, conducted
ultrasonic cleaning and controlling all standard parameters . any
idea where this metal chips come from and how it was formed?
Redford Olan
Surtec Phils. Inc. - Philippines
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A wild guess would be the part has tiny burrs and the tumbling
action of the process is knocking off the burrs.
If the part is steel, have you tried sweeping the tanks with a magnet
before plating? Increase the flow rate of the filter system will help
some.
James Watts
- Navarre, Florida
+++++
I can only guess your Process.
If your copper is acid and the base metal is ferrous alloy.
Displacement reaction occurs during electroplating.
HSolidum
- Philadelphia, Pa, USA
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