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May 2014

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From:
Jim West <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Jim West <[log in to unmask]>
Date:
Mon, 5 May 2014 14:04:24 +0000
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Thanks Dave and thanks everyone else that provided me with some feedback.  As Dave mentioned, it was all good stuff,  helpful and much appreciated!



Jim



From: [log in to unmask] [mailto:[log in to unmask]]
Sent: Friday, May 02, 2014 7:24 PM
To: TechNet E-Mail Forum; Jim West
Subject: Re: [TN] Use of Nitrogen (reflow ovens)

Hi Jim - let me add one more bit of information to the good stuff you have already received from TechNet. The use of nitrogen allows you to use a wider range of flux formulation choices. Since nitrogen reduces oxidation by providing an inert reflow environment, your flux doesn't have to work as hard and it can also allow a flux residue that is easier to remove if you do pwa cleaning. Nitrogen isn't necessary but it does allow for more material options in your soldering process.

Dave Hillman
Rockwell Collins
[log in to unmask]<mailto:[log in to unmask]>




From:        Jim West <[log in to unmask]<mailto:[log in to unmask]>>
To:        <[log in to unmask]<mailto:[log in to unmask]>>
Date:        05/02/2014 12:51 PM
Subject:        [TN] Use of Nitrogen (reflow ovens)
Sent by:        TechNet <[log in to unmask]<mailto:[log in to unmask]>>
________________________________



Good Friday all,

Wondering how many out there, using both lead and lead-free solder, are using nitrogen with your reflow process?  At a previous factory, we did not use nitrogen as part of our reflow process and where I'm working today, we use Nitrogen on all our lines.  I had success without nitrogen and we are having success with nitrogen.  At the APEX show, I spoke with at least one reflow oven manufacture about their oven and what they feel about the use of nitrogen and they pretty much said they are selling less ovens with nitrogen.  To the point of 90%+ of their ovens are sold without the nitrogen option.  As most know, nitrogen is very expensive and I would like to justify not using nitrogen in the future, but I have an uphill climb due to my parent company suggesting we use nitrogen based on a policy created over 7 years ago.  Based on our product mix, I'm of the opinion we don't need nitrogen.

What are your thoughts on using nitrogen with the reflow process?

Has anyone gone through the process of eliminating the use of nitrogen and had success afterwards?

Thanks,
Jim


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