Why is my MIG gun sputtering?
When the power source senses the reduced current at the arc, it sends a surge of voltage in order to overcome the restricted current flow. This increased voltage causes the popping and sputtering that leads to poor and inconsistent weld quality.
Why won’t my MIG welder strike an arc?
If you’re trying to weld on an area that has rust, old paint, seam sealer, oil, or any other coating your welder might not be able to start an arc. We suggest cleaning the surface with a sander or grinder to remove all coatings and then wiping the metal down with PRE Low Voc to clean any oils or grease off the metal.
Why is my welder popping and spitting?
The most common reason MIG welders suffer from the popping is the wrong wire speed. It’s likely that your MIG gun is feeding the wire too fast or too slow. To test it out, touch the wire to a piece of clean scrap metal, hold the trigger as you move the gun, and listen closely to the sound.
Why is my weld not holding?
Low Welding Temperature Metal objects require an insane amount of temperature to melt, and unless you are using enough temperature, your welds will not hold. You may need to go from 3000 to 20000 degrees Celsius of temperature to weld something.
What should the gas pressure be on a MIG welder?
MIG shielding gas flow is set and measured as cubic feet of gas per hour (CFH) NOT pressure in psi. Unlike oxyfuel welding and cutting, MIG gas flow rates are very low. The gas pressure in the hose going into a wire feeder/welder, while welding, typically varies from 3 to 8 psi.
What will cause a wire to feed erratically?
Erratic wire feeding A worn out or kinked liner, or build-up of debris, filings, dirt and other foreign material inside the welding liner, the wrong size liner and misalignments or gaps at the liner junctions caused by an improperly trimmed liner can all cause the wire to feed erratically.
Why my arc welder is 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.
Why does my weld look like popcorn?
A weld may look like popcorn when the wire is speeding too fast or slow or when the fire feeding happens before the melting. If you use solid wire without shielding gas, you might also hear popping sounds. Other reasons may include the wire’s incorrect size, amperage adjustments and voltage.
Why are my welds splattering?
The main factor is a disturbance in the molten weld pool during the transfer of wire into the weld. Typically, this is caused by the relationship between amperage and voltage. This is usually seen when the welding voltage is too low or the amperage is too high for a given wire and gas combination.