Aloha, fun & authoritative answers -- no cost, no passwords, no popups
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Metal finishing Q&As since 1989

-----

Capillary (micro-cracks) after chromium plating

2005

We are producer of injection moulded plastic parts for automotive industry and we also produce parts for chromium plating. (Chromium plating is accordance to norm Nr. B154140 � Coating thickness: Cu = 15 ìm; Ni = 7 ìm; Cr = 0,3 � 1,5 ìm).
We have problems with after galvanizing layer appearance. Capillary is the defect which is mostly appeared. We would like to know if there exist some recommended conditions of moulding or surface stress which affects internal stress of plastic part. We could polish these capillary (micro-crackers) but after some time they come back. Could you give us recommendation if this problem is caused by process parameters during injection moulding or if it is caused by chromium process?

Petra Navlacilova
- Uhersky Brod, Czech Republic, Europe

Do a quick search in this site's search engine (top of the first page). There are no less than 30 letters on the subject POP-Plating On Plastics.

Guillermo Marrufo
Monterrey, NL, Mexico
2005

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: