Process in which liquid metal or plastic is poured into a mold that contains a hollow cavity of the desired shape, and then allowed to cool and solidify.
Welding
A fabrication process to make high strength joint between two or more parts by heating to their melting temperature, with or without use of a filler metal.
Forging
To heat up a metal and hammer it into the desired shape.
Stamping
The process of placing flat sheet metal in either a blank or coil into a stamping press where a tool and die surface forms the metal into a net shape.