Hello Doug, thank you for the additional commentary, it has reminded me of another reflow recommendation that I'd like to make in general for readers. It's not specific to O2/N2 in ovens but in the method for creating and managing profiles for numerous products. Creating specific profiles for a smaller number of products is usually the way to go but when you have 250 different products that mostly are double sided design, your individual number of profiles becomes outrageously large to manage. What we did with our ovens was maintain an optimzed reflow profile with correct temperatures in each zone. Then we categorized each type of temperature profile (extra low, low, medium, high, extra high) based on speed alone. Temperatures remained consistent, all that changed was conveyor speed which made a huge impact in product changeover cycle time. It's quicker to adjust conveyor speed at maybe 30 seconds rather than wait for an oven to stabilize after loading a new lower temperature profile which could take 30 minutes or longer in some cases. Just some recommendations for those who may be having difficulties managing a high number of oven profiles. It worked very well for us. Let me know if you require additional assistance. Thanks!
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