01Start with the equipment process
Obtain the soldering equipment supplier's atmosphere requirements and operating data. Furnace oxygen levels depend on gas distribution, openings, board movement and extraction as well as the supplied nitrogen. Do not assume that inlet purity directly equals the atmosphere in every zone.
02Record realistic production
Include line speed, product mix, startup, standby and changeovers. Measure or obtain nitrogen use for the required atmosphere under those conditions. Note whether several lines restart together and whether the supply needs to cover that peak.
03Validate the interfaces
Agree supply flow, pressure and quality at the furnace connection, then check the furnace atmosphere and soldering result through the process validation. Keeping these tests separate helps identify whether an issue lies in gas delivery or furnace operating conditions.
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