Back purging

i want to tig weld aluminum bike frames and was wondering if i need to have shielding gas inside the tubes to protect the inside from contamination?


it will weld better with internal gas shielding but most authorities state it is not needed for aluminum. Of all the metals, aluminum is probably less sensitive to not shielding the back side of a weld with argon.

Return to tig forum.

Enjoy this page? Please pay it forward. Here's how...

Would you prefer to share this page with others by linking to it?

  1. Click on the HTML link code below.
  2. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.