Electronics Forum | Mon Dec 30 12:36:20 EST 2019 | emeto
Thanks Rob, this is excelent
Electronics Forum | Tue Dec 31 02:10:54 EST 2019 | sssamw
The video showing wave contact is not consistent and not stable from width size, make it better.
Electronics Forum | Tue Dec 31 02:10:04 EST 2019 | sssamw
It looks like solder dross there or flux residue that not activated well. Your speed is 43cm/60s, wave width contact is 2cm, so dwell time is 2x43/60=1.43s, it's short also.
Electronics Forum | Sat Jan 18 12:44:35 EST 2020 | anteiv
We made much better contact of wave with board. There was not enough solder in bath. We increased it so wave height is higher with same pump power And now board is pushing dirty wave to the other side and board is much cleaner!
Electronics Forum | Fri Dec 27 11:42:18 EST 2019 | emeto
I could not see pictures of your board - please attach one or two. So to answer your questions: 1. wave should not overflow over your board - mostly we use pallets as carriers to protect the assembly. 2. Solder dross is caused because your wave is no
Electronics Forum | Fri Dec 27 12:12:29 EST 2019 | slthomas
As has already been mentioned, black residue is usually either from dross or just a dirty pot, pump, baffles, etc.. I also saw that maaaany years ago in a system that used a flawed oil intermix "feature" but hopefully those systems are long gone.
Electronics Forum | Fri Dec 27 12:42:36 EST 2019 | rgduval
In your video, it looks to me as though the bottom of the glass is too low, but, I can't tell for certain. As a general rule, keep the top of the wave no higher than the mid-point of the PCB. Top flow will take care of itself thanks to flux and cap
Electronics Forum | Fri Dec 27 16:12:54 EST 2019 | anteiv
thank you for reply here is picture of the board https://imgur.com/a/i2MfFBw on the bottom are pins/components which height is about 3-4 mm from bottom of the board we had to increase distance of board from nozzle to make clearance and we increas
Electronics Forum | Tue Dec 31 02:33:57 EST 2019 | anteiv
thanks again for reply, we have now configured speed of traveling so pcb can travel through preheat with one speed (call it v1) and through wave with other speed (call it v2). Lenght of preheat elements is fixed, so with speed v1 we can change pr
Electronics Forum | Fri Dec 27 02:11:31 EST 2019 | anteiv
Hello, We are having problems with SMD wave soldering (ERSA) used flux is BALVER ZINN 390-RX-HT https://www.balverzinn.com/tl_files/balverzinn/downloads/intern/TDB/PDS_390-RX-HT_EN.pdf https://www.balverzinn.com/tl_files/balverzinn/downloads/datenb
winsouce.jpg)
