What is an advantage of using pulsed current in welding stainless steel?

Using pulsed current in welding stainless steel is advantageous because it yields less heat input than steady current. This is particularly beneficial when working with materials like stainless steel, as it helps to minimize warping and distortion that can occur from excessive heat. The pulsing effect allows for better control over the heat being applied during the welding process.

By alternating between high and low current levels, pulsed TIG welding maintains adequate energy to melt the base metal while allowing for cooling periods that help prevent overheating. This controlled heat input is crucial in maintaining the integrity and mechanical properties of stainless steel, which can be affected by high temperatures during welding.

This technique also enhances the weld pool's stability and can improve the quality of the weld by producing a narrower heat-affected zone and creating cleaner, more precise welds. Overall, the use of pulsed current in this context allows for greater control and effectiveness when welding sensitive materials like stainless steel.