Hot extrusion is a process where heated metal is forced through a shaped die to create parts. There are two types: nonlubricated and lubricated. Nonlubricated methods include forward and backward extrusion. Speed and temperature are crucial in this process. Different types of presses are used for hot extrusion. The shapes created are characterized, and factors like speed, pressure, and lubricant type are important for success. Applications and design methods for extrusion dies are also discussed.