Electronics > Projects, Designs, and Technical Stuff
Vapour phase Soldering
luky315:
I used Galden LS 230 so the temperature is 230°C, enought for the lead free solder paste ("CR 88" from EDSYN Sn96,5 Ag3,5)
The pot is for cooking asparagus, I don't know the volume. It's slim and high and has a metal basket. Only 100ml of Galden was used. I marked the level on the container and noticed no level drop after filling the cooled down Galden back after soldering, but my measuring methode was not exactly scientifically correct so a small loss is expected....
It was surprisingly simple and fast. And no tombstoning although there are a lot of 0402s on the board.
Kjelt:
Can you set the temp on the cooker or did you just heat till you saw the vapour?
Did you actively cool down the Galden with cold distilled water? Can you describe in more detail the followed steps?
What are your next improvements on the process?
luky315:
I turned the cooker on until the Galden boiled, lowered the PCB (on the basket) slowly (~1 minute) while watching the temperature with the thermocouple, waited until the solder changed phase and pulled the basket out. No active cooling, no fan.
No improvements needed.
Maybee I try cooling the upper end of the pot with a towel soaked in cold water.
miguelvp:
remind me not to eat asparagus at your house :)
then again, it might be perfectly safe, or is this cooker now used exclusively for electronics?
luky315:
Galden *should* be safe (it's inert) and the equipment is used for electronics only. I would however recommend a good ventilation....
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version