Electronics Forum | Thu Jun 14 16:52:08 EDT 2007 | joeherz
Brian, We've see foaming issues with our wave flux occasionally when running large slugs of product through the wash. We love the wave flux and changing it was not an option. Our process parameters for the wash machine we're derived via a validati
Electronics Forum | Wed Jun 13 12:45:32 EDT 2007 | rgduval
We use an older industrial dish washer to clean our boards, and it works out pretty well. Economical, at least. I'd like to upgrade to an in-line, but it's not in the budget, yet. We've got ours piped with de-ionized water, and a hot water heater
Electronics Forum | Mon Jun 18 17:11:41 EDT 2007 | bigdaddysoy9
Sami, Have you tried anything to reduce your print time. For example, use the fewest fiducials possible (2 in most cases) for alignment. Get rid of unnecessary inspection sites. Adjust the start/stop of your stroke to reduce wasted movement of th
Electronics Forum | Tue Jun 19 08:35:24 EDT 2007 | pavel_murtishev
Dear Sami, Consider doing DOE it the printing speed is a point of concern. A few questions: 1. Which glue do you use? 2. What are the printing process parameters you have entered into your DEK? Could you list them here (front/rear printing speed, s
Electronics Forum | Wed Jun 13 14:48:48 EDT 2007 | rgduval
Is there a sort of standard method to prevent part loss in reflow? I've had a couple of situations come up recently where we've lost some parts during second-side processing. We're running an Heller 1800, with a mesh belt. Most items process fine,
Electronics Forum | Wed Jun 13 15:40:44 EDT 2007 | slthomas
Edited because I completely misinterpreted your post. We used 2 lengths of Durapol with slots for the board edges and a shorty (free-floating, not attached) under the middle. Not much more elaborate than your titanium shims but we had it laying aro
Electronics Forum | Mon Jun 18 10:11:52 EDT 2007 | dyoungquist
Almost every board/panel we build is double sided and we use an MPM SPM screen printer with no problems. The screen printer is not the cause. We have seen heavier parts fall off the first side when going through the reflow for the second side. We
Electronics Forum | Fri Jun 15 08:47:18 EDT 2007 | ed_faranda
I by all means, am not an expert on Wave processes. But, our second bottom side zone for our wave is down. My boss said "well the flux looks okay, just run it" and won't give me the machine to properly fix. How many people have a problem with thi
Electronics Forum | Mon Jun 18 11:54:35 EDT 2007 | grantp
Hi, The problem seemed to be across multiple batches of boards, so I think they were made correctly, and we don't use a carrier in the reflow oven. However we just moved our equipment to the new factory yesterday, and connect and start turning on
Electronics Forum | Tue Jun 19 19:03:31 EDT 2007 | diesel_1t
Hi folks. If the solder is on the BGA but is not soldered at all on the pads, then you can discard BGA solder issues, by the other hand; you might be experiencing wicking due to heat is being absorbed on component so the balls on BGA are hotter than
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