Why is my flux core welder not working?

One of the most common reasons your welder won’t spark is because the connection points between the welder and the metal pieces are not clean or clear. This means that both the workpiece where you want to form an arc as well as the connection point for the work lead clamp need to be bare metal.

Do you drag flux core?

With flux-cored welding, you should always use a drag (pull) technique, in which the tip of the welding gun is being pointed back at the weld pool and dragged away from the completed weld. An easy rule of thumb for remembering whether to use a push or drag (backhand) technique is: “If there’s slag, you drag.”

What causes pin holes in flux core welding?

Wormhole porosity typically occurs during the flux cored arc welding process (FCAW) on both self shielded and gas shielded applications. The common cause of this condition is the nitrogen getting trapped as it tries to escape the puddle during the solidification process.

Why is my flux welder sputtering?

If the voltage is too high, and the wire speed too low, the wire will burn back, feed, make contact, burn back, feed…. Over and over again, sputtering and having terrible trouble. Now, if the voltage is too low or the wire speed is too high, you’ll get what’s called ‘stubbing’.

Why is my welder pulsing?

Pulsing is a very generic term that can describe several problems with a Mig welder. Most are related to setup problems with the welder, such as the settings for temperature, wire feed speed, and mechanical issues such as an obstruction in the feed or the wrong tension obstruction on the welder.

Can you weld rusty metal with flux core?

You can weld rusted metal with a flux-cored wire and receive good results because it contains flux material. The flux creates an aggressive arc and contains elements that can clean the puddle. It is the next best welding process for rusted metals after stick welding.

How do you prevent worm tracks in flux core welding?

To prevent the problem, lower your voltage and reduce your travel speeds. Pay attention to the work angle of the gun, being sure not to focus it too much on either portion of the weld joint. Using a slight weaving technique can also help remedy undercut.