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Timeframe for baking after zinc plating

Why is the time frame important to bake parts after zinc plating within 4 hours? What will happen if parts are baked up to 8 hours after plating?

Joe Cammarata
Spring MFR - St. Charles, IL, USA
2004

If you wait 8 hours, you will have given the hydrogen that was released into the grain structure 8 hours to do permanent damage instead of 4 hours. If you allow it only 1 hour you'll be better off still. Used to be some people thought you had 24 hours . . . then 12 hours . . . now 8 hours. It seems the real fact is that you should ideally bake immediately after plating and watch the embrittlement failures decline to zero as the time declines to zero.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2004

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