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Subject:
From:
John Goulet <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Sun, 15 Mar 2009 14:43:23 +0000
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I would ask if the fumes react with the burnt fluxes and increase the health riskes to the operator especially during the maintenance. 

In the past a lot of de-dross formulas consisted of phosphorous and some of the virgin solders have phosphorous in there as well to reduce dross formation. 
----- Original Message ----- 
From: "stephengregory5849" <[log in to unmask]> 
To: "TechNet E-Mail Forum" <[log in to unmask]>, [log in to unmask] 
Sent: Saturday, March 14, 2009 7:53:09 PM GMT -05:00 US/Canada Eastern 
Subject: Re: [TN] Additive to reduce dross in Wave solder 

Another question I have is, does the MS2 leave any kind of residues on the 
pot walls or wave formers? 

Dross formation has become somewhat a topic of discussion here. It has been 
noticed that we've been generating more dross with our new Vitronics/Soltec 
Delta-5 than we did when we had a Technical Devices wave solder machine. I 
tend to think that is because we've been waving more boards in selective 
solder pallets than we did in the past, and also partially because of the 
wave dynamics in the Delta-5...it seems to circulate the solder more. 

One last question, what do the solder recovery systems cost? 

Steve 

----- Original Message ----- 
From: "John Goulet" <[log in to unmask]> 
To: <[log in to unmask]> 
Sent: Saturday, March 14, 2009 1:27 PM 
Subject: Re: [TN] Additive to reduce dross in Wave solder 


With the high cost of LF solder I don't want to add anything and have 1,800 
lbs of bad Pb-free solder. 

I would rather buy a recovery system and return the same good solder into 
the pot. 

I also have to be conscious of the safety aspects of the fumes and reaction 
between the additive with the flux used and the solder. 

Some of the fluxes have added things so the fumes aren't obnoxious but that 
doesn't mean they are safe. 


----- Original Message ----- 
From: "Richard D. Stadem" <[log in to unmask]> 
To: [log in to unmask] 
Sent: Tuesday, March 10, 2009 12:10:25 PM GMT -05:00 US/Canada Eastern 
Subject: Re: [TN] Additive to reduce dross in Wave solder 

No, like I said we do not use this material in the selective soldering 
process. 

-----Original Message----- 
From: TechNet [mailto:[log in to unmask]] On Behalf Of Carl Proescholdt 
Sent: Tuesday, March 10, 2009 9:59 AM 
To: [log in to unmask] 
Subject: Re: [TN] Additive to reduce dross in Wave solder 

Richard, 

Have you seen any change in bridging or other soldering performance on 
the selective process due to the addition of this material? 

Carl 

-----Original Message----- 
From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D. 
Sent: Tuesday, March 10, 2009 8:22 AM 
To: [log in to unmask] 
Subject: Re: [TN] Additive to reduce dross in Wave solder 

We use this product in our Robotic Tinning Cells made by V-Tek. These 
cells have automatic dross skimmers on top of the laminar flow solder 
wells, and when we use this product coupled with our proprietary oxygen 
evacuation vapor barrier the amount of dross is cut way, way down. It is 
a good product. We used to use a number of de-oxidizers in our wave 
solder machine, and this was the last one we used before shutting the 
machine down. We no longer need to run the wave solder machine because 
we added selective solder, which uses only the oxygen evacuation vapor 
blanket over the fountain (no nitrogen needed). But I strongly recommend 
you try the MS2 in your wave solder pot. It should work better than 
Oxy-clean and other brands. 

-----Original Message----- 
From: TechNet [mailto:[log in to unmask]] On Behalf Of Carl Proescholdt 
Sent: Tuesday, March 10, 2009 7:37 AM 
To: [log in to unmask] 
Subject: Re: [TN] Additive to reduce dross in Wave solder 

John, 

I am glad you asked this. I just received an advertisement from some 
company called PKMetal for a "MS2 Molten Solder Surfactant" which is 
supposed to reduce dross. It worries me to add anything to the pot that 
might be a pain to deal with later. So...I was wondering the same 
thing! What's the experience out there? 

Carl 
dca 

-----Original Message----- 
From: TechNet [mailto:[log in to unmask]] On Behalf Of john 
Sent: Tuesday, March 10, 2009 5:04 AM 
To: [log in to unmask] 
Subject: [TN] Additive to reduce dross in Wave solder 

Hi Guys, have you any thoughts on adding an additive to the wave solder 
pots to reduce dross have any of you had experience with this 
application I have been asked to look at this 

and It scares me a little 



The purpose of this project is to evaluate the two high potential Solder 
Surfactant/Antioxidant, MS2-200LF & JR07-VI, to get its quantitive and 
qualitative performance and cost saving in lead-free wave soldering 
process. 





JTEC-EUROPE Ltd. 

Cell / Mobile : +44(0)7921 197 587, 

Office Dial : +44(0)1355271970, 
Email: [log in to unmask], 
Skype: john.jtec 



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