The difference between cold extrusion and hot extrusion of aluminum

Many people use aluminum extrusion machines at work. There are also cold extrusion and hot extrusion in aluminum extrusion machines. So what is the difference between the two?

First, the process is different

Cold extrusion: In the process of cold extrusion, the metal blank is extruded without heating.
Hot extrusion: In the process of hot extrusion, the metal blank is heated to the hot forging forming temperature for extrusion.

Second, the equipment used is different
Cold extrusion: The equipment used for cold extrusion includes mechanical presses, hydraulic presses, etc.
Hot extrusion: The equipment used for hot extrusion includes induction heating equipment and hot extrusion dies.

Three, different applications
Cold extrusion: Cold extrusion is mainly used in the refined production of small and medium forgings.

Hot extrusion: Hot extrusion is mainly used in the manufacture of long-shaped parts and profiles of ordinary equal cross-sections.