Electronics Forum | Thu Jun 16 22:33:54 EDT 2005 | davef
Peter: Please explain: * You say, "The cooling phase is important to perform the strength of the solder joint." [We agree that fast cooling rates produce fine grain in solder and that fine grained solder connections are stronger than coarse grained.
Electronics Forum | Tue Jun 14 10:38:53 EDT 2005 | Stefan
500 rejected (?) per million placed components is a very good rate, considered that it would be better than 4 Sigma if you name it defects on the board. Or do I incorrectly convert ppm to dpm? * 3 Sigma 66,800 defects per one million opportuniti
Electronics Forum | Tue Jul 12 06:13:30 EDT 2005 | dougs
A while back we checked out all our manufacturing equipment for lead free capability, we thought our soldering irons would all be fine as they can reach temperatures well in excess of lead free alloy melting points. Last week i was speaking to someo
Electronics Forum | Mon Jul 18 18:36:01 EDT 2005 | slthomas
"thomas, why isn't it process control," Minute detail, really. Defects aren't a measurement of process parameters, they're the result of them (and a few other things that have been mentioned). SPC measures process parameters. It is preemptive, and
Electronics Forum | Tue Jul 19 12:29:20 EDT 2005 | cyber_wolf
How does the mount plane change if the surface of the board is located in the same place every time ? For example: If you put 2 boards side by side on the Y wagon : one board measures .020" and the other .200" the surfaces of the boards are going
Electronics Forum | Wed Jul 20 18:08:38 EDT 2005 | russ
How long is it taking to reach the 150? We use the 020 here along with 023 and have very good results with our machine. The 023 is rated for a higher temp then the 020 but I don't know about staying power. We heat from both the bottom and the top
Electronics Forum | Wed Aug 03 10:14:59 EDT 2005 | Wonderboy
With oven temps rising due to Lead-Free Processing, I'm looking for some information on high temp Reflow Oven lubricants. I've found some info in the Fine SMTnet Archives on Chain Lubricants, (Mostly Synthetic Motor Oils), but I'm wondering what othe
Electronics Forum | Mon Aug 22 11:49:59 EDT 2005 | pjc
Fixed spray head performance depends on board width. If you are looking for complete top-side hole fill, the flux penetration into the lead-hole will be more in the center and less on the ends because of the fan pattern spray. For board widths over 6
Electronics Forum | Wed Aug 24 10:53:37 EDT 2005 | PWH
Thanks for the input. Currently we have the advantage of having almost all SMT operators trained in advanced programming so we are able to make changes easily to feeders, etc. Many of the things you mention we do at this time so it's funny to see t
Electronics Forum | Thu Sep 01 14:24:44 EDT 2005 | lsmith
I do not have a ERSA Versaflow but do have some ERSA equipment. Only can tell you I will most likely not purchase anything else from them. The experience I have with their service after the sale would have to be rated VERY low. In addition, they emai
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