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  • What is a foundry?

A foundry is a factory or workshop that produces metal castings—essentially, it melts metal and pours it into molds to create shaped metal parts.

Key Points About Foundries:

1.Core Process  

a.Metal (iron, steel, aluminum, bronze, brass, magnesium, etc.) is melted in furnaces.  

b.The molten metal is poured into molds (made of sand, ceramic, plaster, or metal).  

c.After cooling and solidification, the casting is removed, cleaned, and finished.

2.Types of Foundries  

a.Ferrous foundries → Cast iron and steel (e.g., engine blocks, manhole covers, heavy machinery parts).  

b.Non-ferrous foundries → Aluminum, copper alloys, zinc, magnesium (e.g., automotive parts, aerospace components, plumbing fittings).  

c.Art/artistic foundries → Bronze sculptures, bells, statues (often using lost-wax casting).

3.Common Casting Methods  

a.Sand casting (most common, versatile, and inexpensive)  

b.Investment casting (lost-wax—high precision, used for jewelry and turbine blades)  

c.Die casting (high-pressure injection into metal molds—great for mass production)  

d.Permanent mold/gravity casting  

e.Centrifugal casting (for pipes, rings)

So when you hear “foundry” today, context decides:

a.Traditional/heavy industry → metal casting factory  

b.Tech/semiconductors → chip manufacturing factory (fab that only does contract manufacturing)