Do you
really mean 550C? That comes out to over 1000F. Almsot
glowing.
Hi Blair!
I would say that
the pot is too hot. Can't tell you what that "brownish" stuff is, but I think
you're describing what I would call a "goldish" color to the solder.
Maybe
the beginning stages of dross?
Anyways, I've seen it when the solder
gets really hot, will see it more when the temperature starts getting up above
550 C.
Maybe will take a picture of what I think you're seeing and post
it on my web page, and then you can tell me if it's the same thing...can't do
that until tomorrow though...
-Steve Gregory-
Hello Technetters,
I'll readily admit that I'm not an
expert on solder, and something has been
bothering me lately here at the
shop, so I'll see what insight the forum can
yield.
We have a
small solder pot used for tinning wires in our harness area.
Periodically
as I walk by this pot I notice fairly thick black dross
covering the
surface of the solder. This gets wiped away before they tin
wires, but
lately I've noticed it turns brownish fairly quickly after wiping
off the
dross from the surface.
What can be the typical causes of this? Could
the pot be too hot? Could the
pot be contaminated (e.g. with copper)?
Could it be contaminated because
it's too hot? I'm suggesting heat here
because they run this pot at a fairly
high setting, I'm not sure
why.
Thanks,
Blair Hogg
QA
Manager
GAI-Tronics
---------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8e To
unsubscribe, send a message to [log in to unmask] with following text in the
BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or
(re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet
NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail
to [log in to unmask]: SET Technet Digest Search the archives of previous posts
at: http://listserv.ipc.org/archives Please visit IPC web site
http://www.ipc.org/html/forum.htm for additional information, or contact Keach
Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------