Electronics Forum | Thu Jul 14 10:00:21 EDT 2005 | chunks
Any one using SPC to monitor their wave solder process? My point is collecting defects and using a scatter plot is useful but only after a problem occurs. SPC's true function is to warn of impending problems that are about to occur. Can SPC really
Electronics Forum | Tue Feb 19 16:19:26 EST 2008 | edatasys
Check out http://www.solderstar.co.uk/wavePro.html This tool measures all key wave solder information with a single pass. Wave/PCB contact, immersion depths, etc. Also has a reflow pack to allow use on reflow, 9 channels with predictive software. B
Electronics Forum | Mon Sep 17 16:03:13 EDT 2001 | jschake
The results from an experiment comparing 27 different combinations of pad dimensions concluded that the pad design with 15 mil pad length, 12 mil pad width, and 9 mil pad separation produced the best assembly yields. A 5 mil thick laser cut stencil
Electronics Forum | Thu Jul 14 11:04:53 EDT 2005 | dougs
yes SPC can be used on a wave solder machine, you should use a c-chart to monitor the amount of defects per board or group of boards, this will let you know if your process is stable, as you improve your process you should re-calculate your UCL, hope
Electronics Forum | Fri Aug 24 11:03:15 EDT 2007 | hussman
I agree with Joris. But to add to his comment, the type of finish also has a direct affect to your wave solder process. Going from a gloss finish to a matte finish may help a lot. As for humidity affecting your wave - I doubt it. I use a water
Electronics Forum | Fri Jul 15 09:43:37 EDT 2005 | dougs
HHmmmm!! looks like i'm getting it way wrong by wanting to chart the quality of product coming from my wave solder machine. could some of you let me know whats the best way to monitor quality on this process.
Electronics Forum | Thu Jul 14 10:37:15 EDT 2005 | pjc
Here are links to the web sites for three instruments specifcally designed to monitor wave solder process. Some have SPC logging capabilities: http://www.ecd.com/emfg/instruments/waverider/ http://www.swpc.co.il/wso.htm http://www.solderstar.com/w
Electronics Forum | Mon Feb 18 15:44:49 EST 2008 | ck_the_flip
Yup! All the major players out there - KIC, Datapaq, and ECD - are all capable of profiling both reflow and wave solder. check them out. www.kicthermal.com www.ecd.com www.datapaq.com
Electronics Forum | Thu Jul 14 11:52:16 EDT 2005 | davef
Sure you can use SPC charting on the wave setup parameters to warn of impending problems. Examples of useful points of analysis are: * Dwell * Temperature * Pot analysis Certainly there's a range of other process controls that could be monitored.
Electronics Forum | Wed Sep 10 12:56:09 EDT 2003 | davef
Intermetallic compounds [IMC]: * Form during the alloying process of some metals. In soldering these are Sn, Ni, Ag, Cu, Au. * Do not accept solder. * Increase in depth in logarithmic proportion to both time and temperature. [So during the solder
