Electronics Forum | Thu Jul 14 10:00:21 EDT 2005 | chunks
Any one using SPC to monitor their wave solder process? My point is collecting defects and using a scatter plot is useful but only after a problem occurs. SPC's true function is to warn of impending problems that are about to occur. Can SPC really
Electronics Forum | Wed Feb 09 21:19:03 EST 2005 | Mrduckmann2000
Russ, We can not use a wave pallet, already went that route. We have parts next to the thru-hole pins and between thru-hole pins. I am going to try an experiment in the next day or so with solder mask. I plan to solder SMT parts on the back of se
Electronics Forum | Fri Mar 03 13:51:17 EST 2006 | Chunks
We've looked at our stencil under magnification after hand cleaning. There is some paste left behind. Machine washing removes all of the paste. Your best bet is to clean like normal, then look at the aps under magnification. Adjust accordingly (a
Electronics Forum | Fri Aug 24 09:29:08 EDT 2007 | jgrootkoerkamp
Solder balls with wave soldering can have different causes. The two most important are the solderresist and the flux. I have similar problems, after changes the flux type 90% off all solderballs are gone. KR, Joris Groot koerkamp
Electronics Forum | Thu Jul 14 16:05:55 EDT 2005 | russ
Good answer slthomas! This has got to be the biggest misconception out there. To perform SPC on a wave process you must first perfrom DOE to determine the critical parameters and or control limits. For example you will need temp reading devices tha
Electronics Forum | Fri Jul 15 10:56:19 EDT 2005 | pr
As Russ said, you do a DOE beforehand. BUT Maybe we are missing something, we do SPC after the wave (1/5) to catch defect trends and fix them with a minimum of inspection. If you are running a 2,000 piece pull, are you that confident that your origin
Electronics Forum | Thu Aug 24 16:08:18 EDT 2006 | Frank R.
Thanks Bill and Dave for your help, Sorry Dave if I didn't search for information in archives. After wave process we have 2 ICT, 2 AOI machines 4 PVA conformal coating machine that will be use on 3 different lines. The quind of automation I want to
Electronics Forum | Thu Jan 29 17:04:43 EST 2009 | jeffjarmato
I run two different waves here one with SAC305 with aqueous flux the other with SN100C and No clean flux. Does anyone see any issues with running product through either machine of course after changing the Flux type? I also only use SAC305 alloy for
Electronics Forum | Fri Jul 15 10:04:02 EDT 2005 | stepheniii
It depends on what you want to accomplish. I believe DB Cooper wants a better product with less wasted effort. If so then Russ and DaveF are the ones to listen to. If you want to impress managers, customers, and others, then you are doing it right.
Electronics Forum | Wed Jul 27 15:54:44 EDT 2005 | Hiram
Hi everybody, We have wave solder fixtures made of Durapol and multiple wave solder machines. Most likely we�ll use the same pallets for either tin-lead or lead-free solder for a while (of course after washing the pallets). Should we test the palle
