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Drying temperature after electrodeposition?

Hi
This is Abdul Baseer Siddiqui, I am serving as Deputy Manager Process Auditing. Drying temperature after electrodeposition?

Abdul Baseer Siddiqui
Process Auditing - Karachi, Pakistan
May 21, 2011

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No "flash card" quizzes, please, cousin Abdul. No one can help you that way. By electrodeposition, I assume that you mean electroplating of a metal coating rather than of an electrophoretic lacquer?

The temperature is not critical for most plating processes, although the work should not exceed 140° F if it has been chromate conversion coated. What is usually more important, since we generally want bright spot-free work, is that the dryer strip most of the water off of the parts rather than baking away the water and leaving its dissolved salt on the components.

If you can tell us about the parts, what kind of plating they have, and whether the work is rack plated or barrel plated, we may be able to help further. Good luck.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
May 26, 2011

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July 30, 2011

Sorry!
Actually my question was "What is the recommended temperature for baking after Zinc electroplating + chromate"???
Our process flow given below:
Part: Shaft assembly
055mm
Length: 70mm

• De-greasing with Trichloroethylene
• Soak Cleaning
• Electro cleaning
• Acid Pickling
• Electro cleaning
• Acid pickling
• Zinc Electroplating
• Neutralizing
• Chromate/Golden Passivation
• Oven Baking
• Salt spray test
• Assembly with Aluminum anodized part

"The requirement of locking agent which we are using for assembly must be cured at 60 °C but majority of parts getting fail in SST but individual parts are okay"

Ultimate question is overheating can be a reason for SST failure????

Abdul Baseer Siddiqui
- Karachi, Pakistan