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Spray fluxing, How much air pressure?

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#44535

Spray fluxing, How much air pressure? | 16 October, 2006

I have a wave machine (offshore made) with internal spray fluxer configured with a conventional spray gun set up. In order to spray fluid (in this case, flux) I must set the air pressure at 0.3 mPA (43 PSI). At that pressure, my flux sprayer creates a flux cloud that rolls out of the conveyor entrance. My exhaust is about to be replaced with a stronger unit, but is this normal? I am using VOC-Free water based OA flux. My belief is that the spray gun set up is not an ideal fit for this process. Any ideas would be greatly appreciated.

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Cmiller

#44536

Spray fluxing, How much air pressure? | 16 October, 2006

I think we run our Vectra between 9 to 14 PSI. If memory serves me, I dont think you can set it above 14 PSI. We use VOC free no-clean. Your number seems WAY high. Check the nozzle. You also may need a different nozzle size. We always run a good filter in the line for the flux to prevent clogging the nozzles. A fuel filter will work. We use a 10 micron from McMaster Carr.

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Cmiller

#44537

Spray fluxing, How much air pressure? | 16 October, 2006

PS, we had a similar situation when a quick disconnect on the flux supply went bad, limiting flow. Take the nozzle off and turn the fluxer on, you should get a lot of flux flow, If not, the lines are probably clogged.

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RDR

#44538

Spray fluxing, How much air pressure? | 16 October, 2006

May need to change nozzles for this waterbased flux.

Seems quite high to me as well

Russ

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#44559

Spray fluxing, How much air pressure? | 17 October, 2006

Definitely too much pressure for any fluxer I've seen. Something must be restricting the flow. Maybe the nozzle.

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#44575

Spray fluxing, How much air pressure? | 17 October, 2006

Hi Tim (Nopper?),

You should not have a cloud of flux comming out of your machine.

Is your fluxer a resiprocating fluxer? Is it an ultrasonic spray head?

I don't have your contact info any longer due to my laptop meeting my hammer. Send me a picture of the fluxer. scott@tritecsales.com

Scott Wilson scott@tritecsales.com

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Reflow Oven