Punching is a process that uses iron, stainless steel, or copper to punch out parts.
Die-casting is a process in which alloys such as aluminum and copper are melted into a liquid state, and the molten alloy is scooped into a die-casting machine with a spoon, and a die-casting mold is used to make parts.
Die casting is a metal casting process, which is characterized by applying high pressure to the molten metal using the mold cavity. Molds are usually machined from stronger alloys, a process similar to injection molding. Most die castings are iron-free, such as zinc, copper, aluminum, magnesium, lead, tin, and lead-tin alloys and their alloys.
Stamping is a method of forming and processing workpieces (stamped parts) by applying external force to plates, strips, pipes, and profiles by means of presses and dies to plastically deform or separate them. Stamping and forging are both plastic working (or pressure processing), collectively called forging.