Which welding process is known for utilizing a constant current type welding machine?

The choice identifying the combination of SMAW (Shielded Metal Arc Welding) and GTAW (Gas Tungsten Arc Welding) as utilizing a constant current type welding machine is accurate because both these processes specifically benefit from a constant current power supply to maintain stable arc qualities.

In SMAW, also known as stick welding, a constant current machine provides a steady arc that helps to keep the welding operation smooth and manageable. This allows for better control over the welding bead, making it easier to work with various types of electrodes and materials.

Similarly, GTAW, commonly referred to as TIG welding, also employs a constant current power supply. This stability is critical because TIG welding requires precision and control, especially when working with thin materials and intricate designs. The continuous arc created by a constant current supply aids the welder in producing high-quality welds with excellent purity and aesthetics.

In contrast, while MIG (Metal Inert Gas) welding does use a type of power supply, it is typically characterized by a constant voltage system rather than a constant current one. TIG is essentially another name for GTAW, thus highlighting that the consistency in current flow is vital for both SMAW and GTAW to effectively accomplish their respective welding tasks.