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Blister problem and Salty problem on Chrome parts




2006

Hi there,

I am currently working with a auto parts manufacturer. We have recently start supplying chrome parts to our customer. Chroming process was however outsourced to another company (due to the complexity).

This is a door handle which runs on PC-ABS (chromable grade). Gas Injection.

We have recently found 2 problems in the chrome supplied by our vendor.
1) Blister was found on the surface of the chrome after some time.
2) As a result of the gas injection, the part is hollow. We found that some of the solution from the chrome process was trapped in the hollow part. Over time the solution will leaked out although the hole was plugged with a EPDM plug. When this happens, it caused contamination which is green in colour on the part. We did try to clean the part with water thoroughly but this is not possible to get a consistency out of this cleaning process. We have tried many ways to stop the solution from entering the part by sealing the hole but this is still not successful, solution still gets in.

Please advise.

Need help

Leon Tee
- Klang, Selangor, Malaysia



2006

Hi there,

what about your racking design?

Regards,

Dominik Michalek
- Mexico City, Mexico




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