Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Best test methods to qualify reflow ovens, automated optical inspection

Views: 2965


AM

#79457

Best test methods to qualify reflow ovens, automated optical inspection | 13 December, 2017

Guys,

What are the best effective tests methods to show capability and repeatability of reflow ovens and AOI machines?

reply »

#79460

Best test methods to qualify reflow ovens, automated optical inspection | 13 December, 2017

ICT, Functional test and performance in the field.

reply »


AM

#79464

Best test methods to qualify reflow ovens, automated optical inspection | 13 December, 2017

Actually testing options to measure process limits of the machine themselves

reply »

#79466

Best test methods to qualify reflow ovens, automated optical inspection | 13 December, 2017

For the ovens you run the profiler and you compare graphs. For the AOI you should run these golden boards(boards that you keep for AOI test - might have intentionally implemented defects) once in a while and make sure you are getting the same results.

reply »

#79552

Best test methods to qualify reflow ovens, automated optical inspection | 4 January, 2018

As always, our good colleague Evtimov is right about the AOI and oven. For the AOI you need to make a golden sample board(panel) and test if your machine can catch all defects that you simulated BEFORE the oven. Try to me as accurate to real defects as possible. SO you have to make a attributive MSA (with only pass and fail). As for the ovens - for me best method is to measure with thermo couples every day for a month on one product. Then if all data is relatively the same you can start measuring once per week, then once per month. In this way you can clearly prove that there is no deviation in your process. But you have to get software like KIC, datapaq etc and a measuring calibrated device of course. And of course, you have to make a very good measuring board with thermo couples attached very well, and name them, so you can always compare the right ones every time.

reply »

XTECH

Reflow Oven