It appears you have not yet registered with our community. To register please click here...

Go Back [M] > Madshrimps > WebNews
Reflow soldering improved with carbon dioxide Reflow soldering improved with carbon dioxide
FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reflow soldering improved with carbon dioxide
Thread Tools
Old 30th May 2013, 08:17   #1
[M] Reviewer
Stefan Mileschin's Avatar
Join Date: May 2010
Location: Romania
Posts: 112,910
Stefan Mileschin Freshly Registered
Default Reflow soldering improved with carbon dioxide

This is exactly what it looks like. [Oleg] calls it soldering in inert atmosphere, but itís just a toaster oven reflow hack dropped into a container full of carbon dioxide.

Why go to this trouble? Itís all about solder wetting. This is the ability of the molten solder paste to flow into all of the tinned areas of a board. [Oleg] talks about the shelf life of hot air leveled PCB tinning, which is about six months. After this the tin has oxidized. It will certainly not be as bad as bare copper would have, but it can lead to bad solder joints if your PCBs are more than about six months off the production line. This is one of the reasons to use solder flux. The acid eats away at the oxidized layer, exposing tin that will have better wetting.

But there is another way. Soldering in the absence of oxygen will also help the wetting process. CO2 is heavier than air, so placing the reflow oven in a plastic container will allow you to purge air from the space. CO2 canisters are cheap and easy to acquire. If you keg your own homebrew beer you already own one!
Stefan Mileschin is offline   Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
Build Your Own Soldering Station jmke WebNews 0 5th August 2008 13:43
NYC Soldering Championships jmke WebNews 0 17th July 2008 10:16
Carbon Li case mod worklog jmke WebNews 3 20th December 2007 21:03
Hand-soldering teeny tiny chips jmke WebNews 0 4th June 2006 12:56
Home Made Air Pencil Soldering Iron jmke WebNews 0 8th December 2005 12:12
Rio Carbon MP3 Player Sidney WebNews 0 14th June 2005 17:45
ColdHeat Soldering Iron Review Sidney WebNews 0 25th October 2004 04:20
Soldering Guide jmke Articles & Howto's 41 29th September 2004 01:03
Cold Heat Soldering Iron @ ModdersHQ jmke WebNews 0 2nd June 2004 13:45
Soldering Guide piotke WebNews 1 1st March 2004 12:41

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off

All times are GMT +1. The time now is 18:03.

Powered by vBulletin® - Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO