Salt spray test failure, no cause identified
Salt spray test failure, no cause identified
(OP)
Hello, I'll really appreciate your help, in case you have an idea of the cause of our problem or in case we are missing sometingh. Recently we had a failure in the Salt spray test (mil DTL5541F)on coupons passed thru Alodine Process. 5 samples show between 10 and 34 Pits. In the last 5 months we haven't had more than 3 to 5 pits on the SS test. Currently we are controling on our process PH for al rinse tanks (Etch and alodine)and PH for Alodine (600) Tank, Chlorides (etch and alodine tanks), tanks temp, concentration of chemicals, PPMs on rinse and inmersion times. All those paramethers look great, no negative trends or something Out of spec. However, suddenly the Salt Spray test results fail. Are we missing monitoring any other critical parameter/characteristic?





RE: Salt spray test failure, no cause identified
Metal Coatings Corporation - Houston TX
http://www.metcoat.com
RE: Salt spray test failure, no cause identified
Perhaps it would be a good idea to do a RRT with an independent laboratory to confirm your equipment is running correctly?
If you need help wwith this I can source a company for you with UKAS accreditation in the UK, we have a Boeing approved cabinet for neutral salt spray.
RE: Salt spray test failure, no cause identified