primeweld tig225x banner 2

Help with flux core welding

by James
(Montreal, Quebec.)

We use flux core, as well as standard stick welding, for our industrial container repair shop. We are generally welding 1/8th mild steel. So, we are joining old with new material. The issue for us is welding with minimum cleaning/prep, therefore dealing with some paint and corrosion. The flux core process is not forming well, as we get some surface holes, or small fissures on the finished weld. Is this a matter of adjustment, or the wrong application for flux core? We are using Mison 8c gas with the flux core wire.

---------------------------------------------

James, I think its pretty normal to get surface holes with flux core on nasty metal.

it is not nearly as forgiving as stick for contaminated metal.

some flux core wires are also pretty sensitive to voltage and stickout changes...and will get wormholes with a slight change in voltage.

I guess you have to weigh the benefits of speed and production and possibly just repair the holes with stick.

Click here to post comments

Return to mig fcaw 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.