What is Inductance in Welding?

Inductance is a feature in welding power sources designed to retard the rate of current rise each time the electrode touches the weld puddle. This helps prevent the arc from becoming too hot and damaging the base metal. Inductance is measured in henries (H).

Too much inductance will cause the arc to be unstable and can result in porosity in the weld.
Too little inductance can cause the arc to be too hot, resulting in burns or other damage to the base metal.

What is the inductance setting on the welding machine?

The inductance setting on a welding machine controls the rate of current rise. It is typically measured in henries (H). The proper setting of inductance for a given welding application can be determined through experimentation or by consulting a welding engineer.

What is output inductance for a MIG welder?

The output inductance for a MIG welder is typically measured in henries (H). It controls the rate of current rise.

How do you adjust inductance?

The inductance setting on a welding machine can be adjusted to control the rate of current rise.

Two types of induction control used

Voltage Mode Control – This type of control regulates the welding current by varying the voltage applied to the electrode.
Current Mode Control – This type of control regulates the welding current by varying the amount of time that current is flowing.

What does inductance control in the short circuit metal transfer?

Inductance controls the rate of the current rise in short circuit metal transfer. This helps prevent the arc from becoming too hot and damaging the base metal. Inductance is measured in henries (H).