Electronics Forum | Mon May 17 15:14:12 EDT 2004 | solderpro
Agree with Joe 100%, we recently brought one in from Malcolm for trial, this company had not practiced viscosity reading or anything in the process, the trail run was a great improvement in print, consistancy, deposition and formation of the solder b
Electronics Forum | Mon Jan 26 19:51:48 EST 2004 | davef
You should be able to obtain a smooth finish. A "glass-like finish" is in part a function of the coating material, assuming good process. When we see "orange peel" conformal coating, we think moisture from the spray room environment, conpressor, et
Electronics Forum | Fri Jun 25 09:19:12 EDT 2004 | tjensen
60-70% RH will be a challenge if you are running a water wash solder paste (and could be the reason you are seeing the problems). If you are running a no-clean, humidity should not be an issue. As long as the profile looks OK, I don't think the con
Electronics Forum | Thu Feb 10 09:14:09 EST 2005 | davef
Don't kid yourself, something has changed. * Worn stencils should produce better release and greater paste deposits than less worn stencils. * Consider inspecting the effectiveness of your cleaning process with a X10 magnifier. * Temperature in your
Electronics Forum | Fri Feb 18 10:10:49 EST 2005 | Frank R.
Thanks Dave, The problem is on all 0805. Do you think it could be a reaction with the flux from the wave or the one in the paste. Do you think the problem is the viscosity of the coating. SPEC = Viscosity 150cP nominal ASTM D-1384. I ask you all
Electronics Forum | Fri Nov 04 13:35:17 EDT 2011 | travishemen
Nordson has a viscosity control system and a laser fan width control option. We use the viscosity control system on our machine. Basically it heats the material to a set temp. The laser fan width measures the spray pattern width with a laser and a
Electronics Forum | Wed Feb 25 11:37:01 EST 2015 | jasonnova
We have a customer with an assembly that will require potting using 3M DP-270. There is a component that needs to be covered with potting material but it is considerably higher than the overall potting height of the cavity. The low viscosity of the
Electronics Forum | Wed Apr 05 23:56:02 EDT 2000 | angela
Recently we have serious problem of our 0.5mm pitch QFP solder bridge. I check the viscosity of the Litton Kester paster. It's roumd about 700 is it too low. And do you have god solution about it? thanks alot
Electronics Forum | Fri Apr 20 16:05:17 EDT 2001 | gcs
We always reduce side to side, EXAMPLE: 12 mil width reduced to .010". Do you guys check viscosity ? Also maybe your guys are appling to much pressure on the sqweegee blades.
Electronics Forum | Tue May 15 08:57:37 EDT 2001 | Stefan Witte
John, we were responding almost to the same time and I did not see what you were writing. If the glue dots are not consistent within one syringe, than I would blame it on the pump spindle. Do you have an extra one to put on, or clean the spindle wit
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