Steve,
I saw a company on TV that was using nonlead solder. For
flux they were using Lemon juice. Board was defluxed with water. I
think it was a PBS program. They were wave soldering boards.
John
--- In Homebrew_PCBs@y..., Steve Greenfield <alienrelics@y...> wrote:
> Please feel free to join the Homebrew_PCBs mailing list and ask
> this question.
>
> I'm forwarding it there, too. I don't require you to join to read
> the archives, so if anyone answers it you can read the answers even
> if you don't want to join another group.
>
> http://groups.yahoo.com/group/Homebrew_PCBs
>
> Steve Greenfield
>
> --- Melanie Newman <tekpumps@b...> wrote:
> > First apologies for a possible duplication... I've pressed Send
> > on the wrong
> > email and mailed out an old draft of "PICBASIC-L Keyin letters A
> > to Z with 2
> > buttons".
> >
> > Now for the email that should have been set....
> >
> > A request for any engineers working in a company with a
> > manufacturing/production environment... Can you tell me (off list
> > to avoid
> > excessive OT subject matter) what you're using in Wash-Up with
> > what kind of
> > Solder in production?
> >
> > Currently we're using a low cost (about $5 per 500g/1lb) Rosin
> > based Solder
> > (I know, don't lecture me, the accountants control that aspect at
> > the
> > moment). After assembly & soldering the boards go into a
> > two-stage Wash-Up
> > with Arklone-P and Arklone-L with a final compressed-air drying.
> > The net
> > result is superb. As you would expect, the boards are flux free,
> > bright,
> > shiny and sparkling.
> >
> > I need to move away from Arklone not just for the obvious Health
> > and Safety
> > reasons, but in this day and age, companies have to be seen as
> > "actively
> > Green" and environmentally friendly - and Arklone sure doesn't
> > fit into that
> > concept. If I swap the Arklone for an industrial alcohol, I can
> > just
> > envisage the guys in Wash-Up drinking it.
> >
> > I've experimented issuing various 'No-Clean' (don't you believe
> > it)
> > colophony free Solders (at almost two to three times the price of
> > the cheap
> > stuff), and a one-stage Wash-Up (getting rid of half the problem
> > is at least
> > a step in the right direction), but the results were
> > disappointing. The
> > biggest problem was flux splatter (at all temperatures),
> > surprisingly even
> > when using a 1% flux Solder. This also necessitated the folks on
> > the
> > production floor having the additional chore of cleaning down
> > their assembly
> > frames (and finger nails!) at the end of the day. This did not
> > make a me a
> > popular girl.
> >
> > As a last resort, I'm now looking at the water-soluble flux
> > Solders (at six
> > times the price), and the accountants will probably get apoplexy
> > if and when
> > I suggest it. I'm also slightly concerned at the warnings that
> > you can't
> > leave this stuff on your boards without washing, and whilst water
> > is cheap,
> > the net result isn't as good as with a fluorocarbon wash.
> >
> > Hence the enquiry for possible Solder/Wash-Up alternatives.
> >
> > Melanie
> >
> >
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