Plasma welding is a welding process that uses a plasma arc between an electrode and the material to create a weld. The plasma arc is created by a combination of a gas, such as argon, and an electrical current. The plasma arc has a high temperature and can be used to weld many different materials, including aluminum, stainless steel, and titanium alloys. The plasma welding process is automated and can be used to make quick, clean welds that are strong and durable.