Sorry! Alkaline water-soluble flux???????????????????? Brian Richard Kraszewski wrote: > Good idea. This will additionally confirm if the cure of the mask is an > issue. I have some experience with the alkaline ingredients of an OAWSF > attacking uncured mask. If this is the case, the alkaline wash > recommended below may also attack the mask. Even if not, the flux may > still be an issue because if you combine the alkalinity of the flux > ingredient with the preheat temperatures seen, you could have the > required synergy to attack borderline acceptable mask. > > Rich Kraszewski > Advanced Manufacturing Engineer - KEDS > Phone: 260.925.8919 > > > > > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Rudy Sedlak > Sent: Thursday, April 22, 2004 2:32 PM > To: [log in to unmask] > Subject: Re: [TN] White Discoloration -- Tin? > > > I come in on this discussion late, so I am not aware of previous parts, > but has anyone yet suggested the possibility that the white haze is Tin > Oxide from the solder dross? > > IF this were the case, a wash with a strongly alkaline cleaner might > make it go away... > > Rudy Sedlak > RD Chemical Company > > --------------------------------------------------- > Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for > additional information, or contact Keach Sasamori at [log in to unmask] or > 847-509-9700 ext.5315 > ----------------------------------------------------- > > --------------------------------------------------- > Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 > ----------------------------------------------------- > > --------------------------------------------------- Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 -----------------------------------------------------