Electronics Forum | Sat Jul 16 13:53:52 EDT 2022 | yannick_herzog
Hello all, we use a reflow oven from Rehm in our SMT production. At the moment we solder under nitrogen atmosphere (approx. 500ppm). Now we want to reduce the nitrogen consumption (costs etc.). What consequences can occur here? Especially on the s
Electronics Forum | Wed Aug 26 15:44:23 EDT 2020 | dwl
I agree with the other posters. A bottle will last a day tops, A dewar should last a week or two. Dewars have a limited shelf life as the liquid nitrogen will vent even if your aren't using it. My experience is with ACE machines. Bottles are really
Electronics Forum | Tue Aug 25 21:12:14 EDT 2020 | stephendo
We didn't use the machine regularly. The dewars would only be good for a month or two whether you used it or not. The nitrogen evaporates and discharges. The first day we forgot to warn afternoon shift. As far as I know nobody had to change their pan
Electronics Forum | Mon Aug 31 07:10:40 EDT 2020 | bukas
I hacked machine to only spend nitrogen when solder pump is on, this made about 80% save when you count in frame change, fluxing and operator slacking
Electronics Forum | Wed Aug 26 20:52:15 EDT 2020 | stephendo
One thing about liquid N2 is while it is safe, only let trained personnel near it. I believe if someone got their hand frozen on the side, it is not coming off until the dewer is completely empty and warmed up. And make sure management understands
Electronics Forum | Thu Sep 03 01:15:03 EDT 2020 | kylehunter
> I hacked machine to only spend nitrogen when > solder pump is on, this made about 80% save when > you count in frame change, fluxing and operator > slacking Hah! I was thinking of doing just that. What'd you use to trigger the sol
Electronics Forum | Wed Aug 26 16:19:48 EDT 2020 | kylehunter
Great! Thanks a lot for the help Definitely nice when everyone is in complete agreeance. I do think going to liquid nitrogen, then a generator makes sense. Currently we aren't planning on using the machine daily, so we'll probably hold off until we a
Electronics Forum | Mon May 24 12:54:25 EDT 2004 | pjc
Maybe here's an opportunity to get a new oven. Electrovert, BTU and Vitronics offer closed-loop N2 control as an option. This, together with other improvements on oven design can reduce N2 consumption by as much as 40%. Not to mention reductions in e
Electronics Forum | Wed May 26 17:46:02 EDT 2004 | pjc
Electrovert has hard data on electrical and N2 consumption for the new OmniEXCEL series ovens to compare with preceeding OmniFlo series. Have a look.
Electronics Forum | Tue Jun 26 06:32:46 EDT 2001 | gdstanton
Sure did. Found 13 w/keyword "Nitrogen". Although, nothing on consumption rates. Thanks for the help.
