Plasma welding is a high-precision welding technique that uses a focused beam of ionized gas, or plasma, to join materials together. This process involves creating an electric arc between an electrode and the workpiece, which generates a high-temperature plasma that melts the metal. It is commonly used for welding thin materials and in applications requiring strong, clean welds. The advantages of plasma welding include its ability to produce deep penetration and narrow welds, making it ideal for intricate designs. It is often used in industries such as aerospace, automotive, and fabrication, where precision and quality are critical.