Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Solder Balling

Richard Sin

#13174

Solder Balling | 29 December, 1998

I have an inbteresting problem on my N2 wave soldering lines. We have two N2 wave soldering line. Line A is old one and Line B is new. We found solder balling Phenomenon on PCB After soldering in the new N2 Atmosphere Wave Soldering Machine. In the case of old line, solder balling is minimal. They are all using the same flux and operating parameters. Any suggestion??

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John W

#13175

Re: Solder Balling | 29 December, 1998

| I have an inbteresting problem on my N2 wave soldering lines. | We have two N2 wave soldering line. Line A is old one and Line B is new. | We found solder balling Phenomenon on PCB After soldering in the new N2 Atmosphere Wave Soldering Machine. In the case of old line, solder balling is minimal. They are all using the same flux and operating parameters. Any suggestion?? | When you installed the new N2 line did you service the old one ? what I mean is if the the machine uses for example lamps as part of the heating process they where out. So a 50% setting of the lamps on the old one would be less than that on the new one due to age / wear / flux residues etc, so possibly the setting's on the new line are too high and your burning off the flux too soon. Try running a couple of profiles thro' each machine. You could also check to see if the N2 atmosphere in the new line is the same as the old one.

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