Electronics Forum | Sat Jun 24 07:23:06 EDT 2017 | tch
You will need to preheat the boards for a lead free selective solder process. A preheat module is critical for any wave or selective solder process, if you don't get the board preheated properly the solder is going to resist flowing to the top of the
Electronics Forum | Thu Jan 22 13:01:14 EST 2015 | dyoungquist
We are using a nitrogen generator (with a N2 storage tank) that feeds 1 selective solder machine. I do not know which type of generator it is. The N2 generator has an oxygen analyzer on it. The selective solder manufacturer recommends a N2 purity
Electronics Forum | Thu Jan 22 10:21:46 EST 2015 | charliedci
I am curious to know how others are providing N2 for their lead free selective soldering process. If you are utilizing a nitrogen generator, is it a PSA type or Membrane type? I am trying to get a handle on nitrogen purity and what purity is necessar
Electronics Forum | Fri Jan 23 11:27:45 EST 2015 | charliedci
Per our selective solder provider, they recommend a PSA type generator to supply the needed 99.999% pure N2. The membrane type (which we have) does not provide the minimum (99.995%) purity necessary for lead free wave soldering. They happen to sell P
Electronics Forum | Fri Jan 23 10:31:01 EST 2015 | rgduval
What are the continuing costs on the N2 generator? Is there replaceable media that needs to be monitored/replaced at regular intervals to maintain N2 generation? We're currently using tank-supplied N2, but are just getting ready to fire up our sele
Electronics Forum | Sat Jan 24 02:10:42 EST 2015 | comatose
Liquid is significantly cheaper than compressed gas tanks if you are in continuous production. Of course, it will eat your lunch if you're running things for a few days, then the machine sits idle for two weeks. It boils off whether you use it or n
Electronics Forum | Fri Jan 23 12:34:28 EST 2015 | dyoungquist
Our nitrogen generator and an air drying unit came with the selective solder machine when it was purchased new in 2008 as a package deal. We originally were feeding the system with air that was not properly dried. That lead to some maintenance cost
Electronics Forum | Fri Jan 23 16:11:38 EST 2015 | rgduval
Charlie, For the 300 cylinder (the largest Airgas sells), it's going to cost about $66/cylinder for the gas (plus delivery charges). They also charge a $99/year lease for the cylinder. Based on those costs, and a low-end N2 generator system that I
Electronics Forum | Wed Nov 12 18:00:49 EST 2014 | davef
Look here: http://www.ersa.com/media/pdf/fachartikel/fachartikel_englisch/global_smt_selective_soldering_article_03_2013_.pdf
Electronics Forum | Mon Nov 10 08:53:23 EST 2014 | jpal
We have the opportunity to buy a new selective solder machine and are used to using a very old Jade machine with a moving tank and wetted nozzle. I have two process concept questions: Which is better- move the board over the nozzle or move the nozz
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