Concur with fellow antipode , Ivan
We actually use nothing at all, being minimalists,
any wonder additives were deemed more of a mess than good (oils especially).
But we have a peculiar stone age technique which works here :
We scoop the dross with a SSteel spatula, fairly rigid (with some flex),
with good insulated handle,
apart from leather (thin) glove;
PRESS the dross ball against the wall of pot to extract the solder,
and the remaining dry biscuit we'll drag over the edge to the overspill
tray.
Than just empty the tray , switch the sucker (infilterfan) off, go home .
You need a steady character to do so, obviously,
spatulas (1&3") from hardware store, too easy for some .
cu pk
-----Original Message-----
From: Justin Braime [mailto:[log in to unmask]]
Sent: Tuesday, 14 December 1999 7:27
To: [log in to unmask]
Subject: Re: [TN] Dross Reducing agent
Ivan
I have found running the pot at the lowest temp. possible 240degC helps a
great deal
with dross reduction. We also lower the solder temp to just below melting
point at
night for the same reason. I don't use oil or wax, they make a hell of a
mess and end
up increasing the amount of time you spend cleaning/maintaining the pot. I
use the
Electrovert Kleenox powder to separate out the solder from the dross when
cleaning,
which minimises the wastage. This is the easy/cheap option for those of us
that cannot
afford the nitrogen!
Our solder supplier does give us credit on the solder they can extract from
the dross
we remove anyway - this is definitely worth pursuing with your supplier...
Justin Braime
Process Engineer
Compuspec Industries
Auckland, New Zealand
Ivan Barrios wrote:
> What is an industry standard (or current experience) on dross produced
> (relationship of adding new solder versus removing dross for, i.e. for
every
> pound of solder added we remove X amount of dross kind of deal)
> Also, has anybody had any experience with using dross reducing agents
(Kind of
> like a detergent to sprinkle at removal of dross) to separate Good solder
form
> the oxides. I have acompany (no names ) that is trying to sell me on this
stuff
> and I would like to hear past experiences with this type of additives.
> Any and all replies will be greatly appreciated
>
> Ivan Barrios
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