Electronics Forum | Fri Sep 24 12:02:57 EDT 2004 | Frank
Yes, I can see your problem, the nozzle makes only good contact in the center and so the ends don't make good contact. The ends tend to curl up during reflow. There were two suggestions to solve this. 1) Let the operator push down the labels befor
Electronics Forum | Thu Mar 03 09:04:26 EST 2005 | russ
Been following this thread and have a question, Why do "touch-up" people follow different criteria than "Q.C." people. It sounds like the root of the problem is not addressed but bandaids are being put into place. We have no "Q.C." department and
Electronics Forum | Mon Aug 18 22:55:05 EDT 2008 | kpm135
Nozzles are really machine specific. Your best bet, if you're looking for the correct nozzle for a part, would probably be to send a strip of parts and the data sheet to the manufacture of the machine and ask them for their recommendation. Most machi
Electronics Forum | Wed Dec 08 18:13:43 EST 1999 | tom
several days ago iwas able to get on to view the smt terms and conditions at smtnet.com/library/content/terms1/index.cfm but now i can't seem to get this page it's a dead link help me please this is the reason i signed up and now i p.o thanks tom te
Electronics Forum | Thu Oct 14 18:17:34 EDT 1999 | JAX
Larry, What's happening. You can get this information from the manufacturer. All you need is the manufacturing part number. You should be able to get this from the purchasing department. Once you have this info just open up their website and fo
Electronics Forum | Tue Mar 04 15:46:00 EST 2003 | EW
I'm not sure to what degree you are manually crunching this data.....If you can set up the data manually, or parse the data from a recording function, to allow it to import into a database with a formula for Cpk, and everything else you could ever in
Electronics Forum | Thu Feb 10 09:01:40 EST 2005 | russ
I have done that also, It does work well. One issue we had was that the mask didn't come right off during the first wash cycle since it was put on much heavier than the mfgr suggested (.01"). We had to soak them in some water first to soften it up
Electronics Forum | Tue Mar 01 10:55:07 EST 2005 | spot
A lot depends on the complexity of the board/process as well as the amount of placements. If the board has few placements and the parts are not smaller that 0805 then doing all the rework after completion is ok. The human eye can only pick out obvi
Electronics Forum | Thu Jul 14 10:29:53 EDT 2005 | stepheniii
It can be used as a sales tool. Choose a CPK you want, then "adjust" your definitions and limits untill you achieve that. Just be prepared to explain that someone who is unavailable for explainations set up the SPC system, and you are just following
Electronics Forum | Fri Jul 15 10:34:28 EDT 2005 | dougs
how do you do it stephen? i'm interested to know what methods can be used to monitor a process such as this. is it best to set-up the wave machine parameters as russ and davef were talking about, what then, how do we know what effect a change in
