Gentlemen,

Good morning!  Chilly here in Lexington KY - 2 degrees with the wind chill
factor!

We utilize a VOC free flux  for wave soldering.  It is 97% water based, and
applied with an ultrasonic spray fluxer.  The preheats are forced convection and
reach approximately 110 C prior to the wave.

Mary Smoot
Process Engineer
Lexmark Electronics
[log in to unmask]





[log in to unmask] on 01/05/99 11:16:50 PM

Please respond to [log in to unmask]; Please respond to
      [log in to unmask]

To:   [log in to unmask]
cc:    (bcc: Mary Smoot/Lex/Lexmark)
Subject:  Re: [TN] Water contents in no clean flux




Most No-clean fluxes use IPA as a solvent and contain no water. If you are
using no-clean flux with a foaming fluxer it is possible for water to be
taken up into the flux over time as it is used (by absorption from the
atmosphere). This can cause spitting over the pot due to the water not
having been dried out by the preheaters, which can cause problems.
There are, however some fluxes (the VOC free fluxes) that use water as a
solvent instead of IPA, and therefore require a different profile to
achieve proper drying of the flux before the pot.

Regards Evan

Evan Jones
Manufacturing/Test Engineer
Bluegum Technology Pty Ltd
PO Box 609, Wangaratta, Australia, 3676
Ph: 61 3 5720 2539     Fax: 61 3 5720 2412
Internet:  [log in to unmask]




[log in to unmask] on 06/01/99 03:10:53

Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond
      to [log in to unmask]

To:   [log in to unmask]
cc:    (bcc: Evan Jones/BGT)
Subject:  [TN] Water contents in no clean flux




     All,

     Would like to know if fresh no clean flux should contain water. If
     yes, what is the purpose and what is the appropriate level of the
     water content?

     Appreciate if any suggestons.

     Mak

################################################################
TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c
################################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following
text in the body:
To subscribe:   SUBSCRIBE TechNet <your full name>
To unsubscribe:   SIGNOFF TechNet
################################################################
Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section
for additional information.
For technical support contact Hugo Scaramuzza at [log in to unmask] or
847-509-9700 ext.312
################################################################

################################################################
TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c
################################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text
in the body:
To subscribe:   SUBSCRIBE TechNet <your full name>
To unsubscribe:   SIGNOFF TechNet
################################################################
Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for
additional information.
For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700
ext.312
################################################################

################################################################
TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c
################################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body:
To subscribe:   SUBSCRIBE TechNet <your full name>
To unsubscribe:   SIGNOFF TechNet 
################################################################
Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information.
For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312
################################################################