Electronics Forum | Mon Jan 30 07:08:06 EST 2006 | Rob.
True, we weren't just checking for lead at the test lab we were also checking for banned substances in the plastics - PBB's & PBDE's which apparently appear a lot in the recycled plastics used in manufacturing connector bodies; & also the other banne
Electronics Forum | Wed Dec 05 03:52:15 EST 2007 | longlee
I disagree with the opinion what use the same reflow oven for both Lead and Lead-free process. As you know, the RoHs restrict the presence of certain substances, including Pb,Mercury,Cadmium,Hexavalent Chromium,PBB,PBDE. Maybe yon don't find any iss
Electronics Forum | Tue Jun 23 19:16:04 EDT 2009 | jmelson
Are you sure there is any "cleaning" needed? Can you see leftover bits of the teflon remaining? If so, work on it with an Xacto knife. But, most thermocouple wires are VERY hard to solder - as in practically impossible. Many of them have aluminum
Electronics Forum | Mon Dec 20 21:01:12 EST 2004 | davef
Bare inconel is NOT ment to take solder, because * Nickel develops a tenacious oxide layer that is very difficult to remove since the nature of the oxide is very dense, coherent, etc. * Chromium is difficult to solder. * Iron is difficult to solder.
Electronics Forum | Mon Jan 07 12:12:55 EST 2008 | ck_the_flip
Another thing I'm curious about. What is the "functional purpose" of soldering stainless? Solder coatings generally prevent oxidation on surfaces, but why would somebody solder STAINLESS? Stainless, by nature, is resistant to rust, and hence, oxid
Electronics Forum | Sat Nov 03 05:19:59 EST 2001 | Ben
Hi I have question about thermocouple type use for Super M.O.L.E. I found in some article that type K T/C (Nickel-Chromium vs. Nickel-Aluminum) may suffer from temperature cycling hysteresis at above 250 degree C and also diffecult to solder. Now
Electronics Forum | Mon Mar 21 09:33:25 EST 2005 | davef
RoHS Substance||RoHS MCV Limits||Typical Testing Approaches Lead||1000 ppm* ||Wet chemical digestion followed by ICP (Inductively coupled plasma) or AAS (atomic absorption) spectroscopy ||||XRF (X-ray fluorescence) spectroscopy Cadmium||100 ppm ||Wet
Electronics Forum | Fri Oct 12 13:58:06 EDT 2007 | jdumont
I get the MCV thing. I dont see it spelled out anywhere when it says each component is to be treated singularly. To me �...a maximum concentration value of 0,1 % by weight in homogeneous materials for lead, mercury, hexavalent chromium, polybrominate
Electronics Forum | Mon Nov 05 20:31:09 EST 2001 | davef
Most people do not intend to �solder� Type K thermocouples. They use solder to �attach� the thermocouple. Search the fine SMTnet Archives for a posting by Chrys Shea. 1 Common thermocouple types commonly used for thermal profiling are: * Type K �
Electronics Forum | Fri Mar 11 18:30:50 EST 2005 | davef
Russ: In December 2003, the European Commission released the following statement: �The commission services have prepared a draft Commission decision establishing maximum concentration values pursuant to Article5(1)(a) of Directive 2002/95/EC. The pr
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