What causes MIG wire Burnback?

Faulty ground. A less-than-perfect ground is another common cause of burnback. Even if you lose contact for just a few seconds, you’ll lose voltage but the wire will keep on feeding. Always attach your grounding clamps to your work instead of the table.

What is MIG Burnback?

Burn back is also very common. It results when a weld forms in the contact tip. It usually occurs when the wire is fed too slowly or the MIG gun is held too close to the base metal. To correct burn back, increase the wire feed speed and lengthen the distance of the MIG gun from the workpiece.

What is Burnback control?

For instance, certain welding machines have a “Burnback Control” setting, which adjust the amount of time that the welding wire remains electrically energized after the wire feeding has stopped. Burnback is when your wire burns back into your contact tip, possibly welding them together.

What causes a welder not to arc?

If your tip is clogged or contaminated with weld spatter it can cause an issue. Also if the tip is the wrong size and too large it might not make a connection with the wire and cause an unstable arc.

How do I stop my spatter from MIG welding?

To reduce MIG welding spatter, your wire must be fed continuously at the proper tension, with no snagging or other restrictions. A smooth, consistent wire feed speed must be provided to achieve a clean weld. The shielding gas must flow freely at the right rate.

How do you stop a MIG welder from burning?

To prevent burn-through and warping, don’t whip or weave the torch; the more time the arc is in an area, the hotter it becomes. Always travel in a straight line and use the fastest travel speed possible that maintains a good bead profile. Another way to prevent burn-through is to use a push technique of the MIG gun.

What does burn back do on a MIG welder?

It will allow the power and gas shield to be maintained on the consumable filler wire when it has stopped feeding thereby burning clear of the weld. In some equipment the burn back is preset within the control circuits others offer an external variable control feature to adjust the time of delay.