Stud welding is a process used to weld a metal stud or fastener to a metal base or substrate, typically for the purpose of creating a strong, permanent connection. The stud welding process involves the use of a special stud welding gun, which applies an electric current to the stud and the base material, melting and fusing them together. Stud welding can be used to weld a variety of materials, including steel, stainless steel, aluminum, and brass, and is commonly used in industries such as construction, automotive, and aerospace. It is a quick and efficient process that can produce high-quality welds with minimal distortion or damage to the base material.