There seems to be a few values missing.

If we knew the board size, we'd be able to calculate the flux spray exposure time, from this we can determine volume of flux deposit in ml/sq. in.

If we knew the specific gravity of the flux, we could determine the weight of the solids per given volume, i.e., ug/ml.


Ed Popielarski
Engineering Manager


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-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Kenny Munro
Sent: Wednesday, February 25, 2015 5:53 PM
To: [log in to unmask]
Subject: [TN] Wave Solder Flux Loading formula

I am looking for a formula to calculate the wave solder flux loading / deposition in - μg/in2 of solids or μg/cm2 of solids with the following machine parameters, 

Flux solid content : % 
Conveyor speed : m/min 
Flux Spray Volume : ml / min 
Spray Head Traverse : mm / sec 

Does anyone know if there is a calculation that can be used to give the loading? Any help would be most appreciated. 

Kenny Munro 

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