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_PCBsSteve Greenfield
--- Melanie Newman <
tekpumps@...> 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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