Electronics Forum | Wed Dec 13 20:46:46 EST 2000 | Dave F
I�ll bite ... Why can�t you calculate LSL/USL values from your control charts? We find that LSL/USL values generally are unknown. If you are seeking a text on statistical analysis consider: "Statistical Process Control for Surface Mount Technology"
Electronics Forum | Wed Jan 09 10:43:56 EST 2008 | ck_the_flip
MTM. Wow, people still do that huh? The problem I have with MTM, it assumes everyone performs things in robotic type motions. The best time study is one that relies on sound statistical methods, and across multiple operators. MTM, however, is gre
Electronics Forum | Tue Jul 01 21:52:48 EDT 2008 | davef
Have you considered developing your own wave solder super-trooper? * Training course at your equipmemt supplier or daylong on-site training by equipment supplier field service * Training at ACI / EMPF or someplace like that * On-line training at a pl
Electronics Forum | Fri Mar 07 08:47:45 EST 2003 | msivigny
Hello Peter, In reflow, running a profile and collecting thermal data does not necessarily make it easy to calculate and determine machine capability. On the contrary to your desires of simplifying the process, determining machine capability on an ov
Electronics Forum | Tue Jun 07 10:38:34 EDT 2011 | davef
Boots: Here's several methods for guessing at the amount of solder on your connection: * First, 'Down & Dirty' ** Assume that the solder is flat, which is reasonable since it's 'flattened' by the component package ** Assume 100% paste transfer from t
Electronics Forum | Fri May 18 09:03:12 EDT 2007 | gregp
Don't confuse cost of ownership and cost per placement. They are two different entities. Also, it's not enough to say it...it needs to be true. One supplier claims "low cost of ownership" but has equipment that requires $700 placement nozzles. I'
Electronics Forum | Tue Nov 03 12:21:53 EST 1998 | phillip hunter
| Thanks for your reply. | I am interested in knowing about maintenance schedules and levels. I'm wondering how to know if I must replace a part. What part? What type of lubrication (for Fuji). Etc. | My company is small in terms of number of lines
Electronics Forum | Fri Jun 26 08:58:43 EDT 1998 | Justin Medernach
| WHAT IS THE BEST ANGLE FOR THE SQUEEGEE BLADE TO BE ANGLED AT? WE ARE USING 45 DEGREE ON OUR POLYURETHANE BLADES, AND I BELIVE WE HAVE THE OPTION OF EITHER 45 OR 60 DEGREES ON OUR METAL BLADES. WHICH OF THE TWO IS BETTER, OR SHOULD WE BE USING AN
Electronics Forum | Sat Jun 27 08:23:02 EDT 1998 | Dave F
| | WHAT IS THE BEST ANGLE FOR THE SQUEEGEE BLADE TO BE ANGLED AT? WE ARE USING 45 DEGREE ON OUR POLYURETHANE BLADES, AND I BELIVE WE HAVE THE OPTION OF EITHER 45 OR 60 DEGREES ON OUR METAL BLADES. WHICH OF THE TWO IS BETTER, OR SHOULD WE BE USING
Electronics Forum | Wed Feb 15 19:20:46 EST 2006 | Mr. Samir
Russ, On both instruments, I ran them through the wave 20 times each using identical profiles and wave parameters, and then used statistical formulas to measure the variation and repeatability of each. I had these all in Excel, but that was around 1
