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Thread: welding copper
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01-22-2008 #12
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- Feb 2007
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Copper can be TIG welded. It is welded with DCEN (straight polarity). You should use argon as a shielding gas, but if the material is over 1/16" thick you should use an argon helium mix. Also keep in mind that copper has a high heat loss rate so when welding thicker materials it should be preheated.
Oh and one last thing. There are two types of copper, oxygen bearing and deoxidized copper.
You should ONLY WELD DEOXIDIZED COPPER
If you try to weld oxygen bearing copper it will have crappy welds
Filler material can be made by shearing off strips of the base material you are welding.
I made a cage out of copper one time. it was about 6 feet tall and about 5 feet wide and about 2 feet deep. It was made out of 1/8 copper flat bar 2" wide. It also used a mesh type copper screen around the entire thing. It was used to house some type of sensitive computer equipment, protect it from radio waves, microwaves, or something like that.
Chris
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