What happens once the jet passes completely through the workpiece when piercing?

When piercing with a plasma arc cutting process, it is essential to maintain proper control of the plasma torch to ensure a clean cut and prevent damage to the workpiece or equipment. Once the plasma jet has completely passed through the workpiece, it is crucial to keep the torch moving in a smooth, circular motion. This movement helps maintain the arc stability and ensures that the cutting continues optimally, allowing for a clean exit point without rough edges or slag.

The smooth circular motion during and after the piercing phase allows for better control of the thermal and mechanical stresses on the material, enhancing the quality of the cut. It also minimizes the chances of the arc extinguishing prematurely or creating excessive dross, which can occur if the torch is lifted abruptly or the motion is erratic. This practice leads to a consistent and high-quality cutting performance over time.