From the orchid archives.
First Methyl Ethyl Ketone is not necessary in a water torch- Methyl
Alcohol is safer. Secondly,.The flame shouldn’t be orange it sounds
like you are low on electrolyte/flux. So, following your
manufacturer’s info, do some basic maintenance- if it’s been more
than 6 months since you added flux to the chamber-it’s definitely
overdue. Also if its a hydroflux welder, check for the brass
handpiece filters decomposition- replace as needed- same for the
filter in the hose line. and if the solder is burning up there can be
a number of reasons from directing the flame onto it to not preparing
the join correctly to learning to use a flux tha clarifies at about
1400 degrees to indicate that you are approaching the temp for the
solder flow (and silver to melt!)…
The alcohol is used to temper the temperature from 3300C to
2200-1900C By reducing the temperature you increase -boost- the BTU
In other words you get more power at a lower temperature.
I never used any kind of flux (in the booster) but feel free to do
KOH (kaliumhydroxide) or better known as potassium hydroxide is a
very strong corrosive chemical component in the same way as NaOH
(natrium hydroxide) is.
The last one is a bit cheaper then KOH but both can be used. Both
chemicals create a lot of heat when added to water (exothermal
reaction) in a very short time.
Add chemical slowly to water, not and NEVER water to chemicals, use
safety equipment (gloves, goggles, pyrex container etc)
The flame is nearly invisable without the use of the alcohol
Compared with the hydrogen torche I use, the flame is more blueish
but certainly not green.
This is howmuch I know about it.
I know for sure that you can find more detailed articles around this
subject in the Ganoksin archives.