Electronics Forum | Tue Apr 13 19:47:05 EDT 2004 | davef
Glue has different mechanical, thermal, and electrical properties than solder. That's why all these very nice no-lead people are furiously trying to gin-up some wacky solder alloy, rather than using glue. Among the papers in the SMTA Knowledge base
Electronics Forum | Tue May 30 16:32:17 EDT 2006 | slthomas
Your aqueous (spray) and ultrasonic methods refer to cleaning of the stencil for storage between jobs. All others would be most common as in-process cleaning methods, whether with cloth or paper products.
Electronics Forum | Fri Jun 16 08:20:36 EDT 2006 | davef
First, isn't paper a nonwoven? Maybe we start splitting hairs on whether paper is a 'fabric' or not, but what's the difference? Second, paper versus nonwoven fabric boils down to performance and cost. We know 'paper', but it could be 'fabric' and
Electronics Forum | Fri Jun 16 07:57:59 EDT 2006 | Bryan
Thanks to all for clarification - I now appreciate the different methodology between "in-line" & "end of run" but am still unclear as to advantages / disadvantages of paper versus non-woven material ie stencil rolls for in-line cleaning. Any info wo
Electronics Forum | Thu Apr 11 19:12:11 EDT 2002 | djarvis
Sorry fellas -disagree. We only clean our stencils in the ultrasonic machine at the end of the run. If the same pcb is up the next day we clean them by hand. We use Electrolube SSS and the used rolls from the in line under stencil cleaner. Wipe the
Electronics Forum | Wed Jun 14 21:49:42 EDT 2006 | davef
Bryan: * Most of our stencils are made from stainless steel that is held by a aluminum frame, attached with epoxy with a fiber glass intermediary between the frame and the stencil. * We use stencils to print either glue [thermoset epoxy] or solder pa
Electronics Forum | Tue May 30 10:55:57 EDT 2006 | bryanhewson
I am a lay person researching the application of non-woven material in stencil rolls either using branded material or non-branded alternatives for DEK, MPM Panasonic machines in SMT environments. I have read a number of articles referring to aqueous
Electronics Forum | Fri Jan 29 21:31:46 EST 2010 | aqueous
I would recommend the following paper entitled "Cleaning for Reliability Post QFN Rework" by Mike Bixenman (Kyzen) and myself (Aqueous Technologies). While it discussed cleaning under QFN's in a batch environment, it is also applicable to cleaning u
Electronics Forum | Thu Aug 17 21:56:05 EDT 2017 | v037022
Dear experience members, Now we are using permelex squeegee blade and we do cleaing it after printing 24 hours. Actually, it took very long time to clean. we need to take out one by one screw and use bemcot paper/ alcohol to clean solder remaining on
Electronics Forum | Sat Aug 26 09:40:27 EDT 2017 | v037022
Dear, My current method incluce steps below: 1. take out all screw 2. Put them into alcohol 3. Clean it with bemcot paper which wet by alcohol 4. Dry it by air gun 5. Checking by Dino camera. It took so much time. Now i want to do it automatic to red
