primeweld tig225x banner 2

suck back in aliminium

I am getting suck back on the underside of my aluminium joint, has anyone got any answers please.


if you are talking about a t joint, the answer can be tricky depending on thickness.

for thin aluminum or aluminium tee joints , suck back is usually caused by too much amperage, too little filler rod, too long an arc, too slow travel speed, or any combination of the above.

I use a forward and back step motion that lets me get back over the thicker part of the weld bead while I ad filler rod. That way i can use a really tight arc to move the puddle forward without using more amperage....then i back up over the bead and lengthen the arc while adding rod.

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.