Why do dual flow PAC units use two different gases?

Dual flow plasma arc cutting (PAC) units utilize two different gases to enhance the cutting process by designating one gas for cutting and the other for shielding or cooling. The primary gas, typically oxygen or nitrogen, is used to create the plasma arc that efficiently cuts through metal. The secondary gas, often used as a shielding gas, serves to protect the molten metal and the arc from atmospheric contamination while also helping to cool the area being cut. This dual gas approach improves the quality of the cut, enhances stability during the cutting process, and can aid in achieving a cleaner finish.

Utilizing two gases allows for optimized performance in cutting operations, as each gas fulfills a specific function: one maximizes the cutting effectiveness, while the other maintains the integrity of the cutting environment. This duality ensures that the cutting process runs smoothly and yields better results compared to using a single gas for multiple purposes.