Hi Bill,
I'm not Kevin but I am familiar with EnviroGold and it does clean RMA, quite
well. The key to being successful with it is getting the right percentage of
chemistry and temperature for your application. I'm sure Mark Palmer at
Envirosense would be more than happy to talk you through it, (408) 690-3770.
KennyB
-----Original Message-----
From: Mengers, William D. [mailto:[log in to unmask]]
Sent: Wednesday, August 20, 2008 11:59 AM
To: [log in to unmask]
Subject: Re: [TN] PWA cleaning methods
Kevin,
Does this remove dried RMA flux?
Bill
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Paul Edwards
Sent: Wednesday, August 20, 2008 12:41 PM
To: [log in to unmask]
Subject: Re: [TN] PWA cleaning methods
Kevin,
I have been using a heated aqueous solution of Enviro Gold #816 from
EnviroSense, Inc. for years in my wash tanks to remove stuff like
fingerprints, ionics and other "non-water" soluble materials from my
PCAs...I can also get off some no-clean solder fluxes with a little
work..
Paul
Paul Edwards
Surface Art Engineering
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Kevin Glidden
Sent: Wednesday, August 20, 2008 9:30 AM
To: [log in to unmask]
Subject: Re: [TN] PWA cleaning methods
The only thing I can add to the sound advice you have received thus far
is:
1) You must also consider what your product requirements are, perhaps
related to the Class of product you are building. Class 3 will
certainly have more stringent cleaning requirements than Class 1.
2) Expanding a bit on "In addition to matching the cleaning solution to
the soils to be cleaned" - note that you should also consider all
process residues, not just the flux and solder. Water only systems are
not very effective at removing non water soluble contaminants, like
fingerprints for example.
Kevin Glidden
Manufacturing Engineer
Luminescent Systems Inc.
-----Original Message-----
From: Douglas O. Pauls [mailto:[log in to unmask]]
Sent: Wednesday, August 20, 2008 12:12 PM
To: [log in to unmask]
Subject: Re: [TN] PWA cleaning methods
Darn, Richard beat me to it. In addition to matching the cleaning
solution to the soils to be cleaned, you also need to consider the kind
of cleaning equipment. The dynamics of the machine can make as much of
a difference as the cleaning chemistry.
You should probably come to the IPC/SMTA Cleaning Symposium in Chicago
in October. Become an expert in the topic in two days.
Doug Pauls
"Stadem, Richard D." <[log in to unmask]> Sent by: TechNet
<[log in to unmask]>
08/20/2008 11:02 AM
Please respond to
TechNet E-Mail Forum <[log in to unmask]>; Please respond to "Stadem,
Richard D." <[log in to unmask]>
To
[log in to unmask]
cc
Subject
Re: [TN] PWA cleaning methods
The cleaning method is tailored to the flux type of the solder paste and
wire solder and wave solder you are using. If you are looking for the
safest method of cleaning, then I would go with deionized water at
145-150 deg. F. and a good water soluble flux process. It depends.....
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of William D. Mengers
Sent: Wednesday, August 20, 2008 10:13 AM
To: [log in to unmask]
Subject: [TN] PWA cleaning methods
Can anyone tell me what the latest and greatest "safe-to-the-hardware"
PWA cleaning methods and solvents there are these days. One of my
co-workers has been tasked with buying a new cleaning system for PWA's.
Any information will be appreciated.
Thank you,
Bill
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