Electronics Forum | Tue Jun 12 14:28:17 EDT 2012 | dontfeedphils
It should be pretty straight forward while taking it apart, just make sure you label things, and be ready to run through every one of the calibrations after it's put back together. Oh, and have fun Bill!
Electronics Forum | Tue Jun 12 07:10:53 EDT 2012 | mosborne1
One bit of advise is that when looking at the person to unload the boards at $12hr. That person is usually twice that in real cost to the company adding in insurance, comp, and all that goes with it.
Electronics Forum | Fri Jun 15 08:45:42 EDT 2012 | mikesewell
To build on this post, assign a person as just the board loader for a shift and see what the increase in throughput is. Freeing the operator up to deal with line issues, feeder replenishment,...etc has an impact and can be hard to capture and this s
Electronics Forum | Fri Jun 15 05:28:55 EDT 2012 | eniac
DeanM, if I understood correct, you use fiducial with dimension 0.1 mm and increased it to 0.15 mm. Why use use small fiducials? You don't have free space on your PCBs?
Electronics Forum | Fri Jun 15 08:11:28 EDT 2012 | eniac
DeanM, thanks for explanation, I will know about this "feature" of some mounters, cause I worked with Samsung, Assembleon and now work with Mirae and I never had a problem with fiducials recogntion with 1 mm diameter.
Electronics Forum | Tue Jul 03 08:17:35 EDT 2012 | rway
Gold and Silver finishes are the best for sure. Unfortunately, they can't mix the finish in a single pass. It's a two step process, which raises your cost.
Electronics Forum | Wed Jun 13 20:38:23 EDT 2012 | kahrpr
It is possible that there is nickel contamination in the gold. Depending on your plating board vendors put nickel down first. The plating also could be to thin. Dave had a good suggestion in trying to solder the pad with a Iron that will tell a lot.
Electronics Forum | Fri Jun 15 11:22:14 EDT 2012 | hegemon
Good info above from davef Solder pot contamination seems likely, are you using any dross reducers or additives that might be reacting with this particluar batch of PWBs? 'hege
Electronics Forum | Thu Jun 21 23:00:16 EDT 2012 | davef
It's possible that if the nickel on your board was skip plated by your fab that you would get the symptoms that you describe.
Electronics Forum | Fri Jun 22 07:16:37 EDT 2012 | brettrenishaw
Spray fluxing yes but have checked the uniformity by using a fluxometer. Also have put boards through with only flux and preheat. no wave up to see if the carrier is being burnt off. I will look into the skip plating issue. Thanks again
Nordson Electronics Solutions makes reliable electronics an everyday reality. Our ASYMTEK, MARCH, and SELECT brands deliver precision fluid dispensing, conformal coating, plasma treatment and selective soldering equipment.
2747 Loker Ave West
Carlsbad, USA
Phone: 18002796835
