Electronics Forum | Thu Apr 15 10:09:55 EDT 2010 | davef
Dross formation rates for SnCu and SAC are roughly 2.5 times the rate for SnPb (Hwang et al., 2004) Methods for reducing dross are: * Lower pot temperature * Run pump speed slower and only when soldering * Check solder contaminants to BS219, ASTM
Electronics Forum | Sat Oct 09 03:26:58 EDT 1999 | Brian
| Always experiencing dross in pot with different characteristic such as color, shape, dry/wet etc. Any paper, wetsites provide the more comprehesive explanation on its characteristic | Dross is a mixture of various things. The obvious ones are met
Electronics Forum | Sat Dec 02 11:35:30 EST 2006 | davef
Best dross remover is to not produce dross. Search the fine SMYnet Archives for previous discussions Dross will not increase signicantly * Another story, that lead-free solders will generate a greater volume of dross than conventional materials, is
Electronics Forum | Thu Oct 06 17:04:43 EDT 2005 | Kris
With what did you compare the drossing against ? Sn/Pb or SAC ?
Electronics Forum | Mon Feb 18 15:20:38 EST 2008 | davef
SN100C contains no phosphorus. It has a dross rate equal or lower than tin-lead solder, where as SAC drosses at 2 to 3 times the dross rate of tin-lead solder. Addition of solder dross inhibitors, such as phosphorus, can be effective inhibitors of
Electronics Forum | Tue Dec 12 13:33:52 EST 2000 | justin medernach
Dross removal is dependent upon the "activity" in your solder pot and the usage of a inert or an "air" atmosphere. The more moving that agitate the solder, the more dross. Basics first and then the answers will make sense. What is dross? Oxidatio
Electronics Forum | Tue Dec 12 13:45:23 EST 2000 | justin m
Dross removal is dependent upon the "activity" in your solder pot and the usage of a inert or an "air" atmosphere. The more moving parts that agitate the solder and expose it to air, the more dross. Basics first and then the answers will make sense
Electronics Forum | Thu Jan 05 16:39:47 EST 2006 | pjc
Electrovert has a new nozzle design called UltraFill. It was designed specifically for Pb Free applications and generates about 40% less dross than the previous Lambda design. UltraFill can of course be used for Sn/Pb alloys. The name UltraFill is fo
Electronics Forum | Fri Nov 11 20:41:58 EST 2005 | GS
Thank you Davef, If I am not wrong in understanding, your answer is mainly related to the Legal point of view according to several different Countries who adopted Rohs or equivalent. My question, sorry for my poor English, is mainly related to the
Electronics Forum | Mon Mar 26 06:10:54 EDT 2007 | RH
Dennis: Have you considered Asahi as a solder ball source? Asahi Technologies has helped produce over 90 million Lead Free PWB assemblies worldwide and has extensive experience in Lead Free solder processes at Sony, Hitachi, and Thompson. Solutions
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