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AR15.COM
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9/29/2002 8:08:39 AM EDT
I currently trying to square off my semi-circle cut out Romanian receiver. Found a small welding shop that would do it for a small fee. Should I be concerned about heating the receiver, the guy said he could do it with a tig-welder. I don't know much about welding so what should I be cautious about? What about welding the brake to the barrel.
9/29/2002 2:29:15 PM EDT
[#1]
tig weldind a patch onto the receiver won't hurt a thing. have the welder back up the inside of the receiver/patch with a copper block.

this does two things...first, it leaves a smoother surface on the inside of the steel which means less cleanup. secondly, the copper acts as a heat sink and helps minimize warping and distortion.

welding the brake on, if done correctly, will not harm the bbl.
9/29/2002 9:42:11 PM EDT
[#2]
thanks Campy. What the heck is helio-arc or something like that?
9/30/2002 3:23:44 AM EDT
[#3]
tig = tungsten inert gas...generally argon used as a shielding gas. tig welders are usually automatically wire fed.

heliarc is also a gas shielded process, but most often is hand fed wire or stick filler.

a google search will fill you in on the fine points of each process.

the wildest welding i see is electron beam welding...in a vacuum chamber.
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