Meiko's True Theory 2: Nitrogen should not be utilized unconditionally.

Nitrogen does not have a reducing effect like flux! There is a risk of an unbalanced state occurring.

In industry common sense, using nitrogen gas in soldering is considered beneficial for improving solderability. However, in our view, the advantages of nitrogen can be sufficiently obtained from the flux within the solder wire, and there are also quality control disadvantages associated with nitrogen, so we do not make any recommendations regarding its use. Nitrogen is commonly used in the reflow process, and its effects have been confirmed. The reason for its use is to suppress the oxidation of cream solder, but what about its effects in robotic soldering (subsequent processes)? In conclusion, since nitrogen does not have a reducing effect like flux, there is a risk of creating an unbalanced state in the fillet appearance and solder wetting (joint surface). Without relying on nitrogen at an increased cost, pursuing the "appropriate timing" and maximizing the use of the flux (reducing power) within the solder wire can enable high-quality soldering. *For more details, please refer to the PDF document or feel free to contact us.

Soldering Equipment