The rate at which a casting cools affects its microstructure, quality, and properties. The products of sand casting and slurry-mold processes, often large with thick walls, generally cool slowly. This increases the metal's grain size, creating a coarse microstructure that lowers the strength of the casting. Coarse grains can allow elements of an alloy to separate, which also weakens the casting. But slower cooling keeps the casting metal liquid longer, which allows more gases and waste metal to escape, reducing the voids a ...

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Casting, Casting - Lost wax casting process, Casting - Other casting processes used in creating artworks, Casting - Casting in manufacturing, Casting - Expendable mold casting, Casting - Nonexpendable mold casting, Casting - Cooling rate, Casting - Shrinkage

Read more here: » Casting: Encyclopedia II - Casting - Cooling rate

See also:

Casting, Casting - Lost wax casting process, Casting - Other casting processes used in creating artworks, Casting - Casting in manufacturing, Casting - Expendable mold casting, Casting - Nonexpendable mold casting, Casting - Cooling rate, Casting - Shrinkage

Read more here: » Casting: Encyclopedia II - Casting - Other casting processes used in creating artworks

Casting is a process by which a fluid melt is introduced into a mold, allowed to cool in the shape of the form, and then ejected to make a fabricated part or casing. Four main elements are required in the process of casting: pattern, mold, cores, and the part. The pattern, the original template from which the mold is prepared, creates a corresponding cavity in the casting material. Cores are used to produce tunnels or holes in the finished mo ...

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Casting, Casting - Lost wax casting process, Casting - Other casting processes used in creating artworks, Casting - Casting in manufacturing, Casting - Expendable mold casting, Casting - Nonexpendable mold casting, Casting - Cooling rate, Casting - Shrinkage

Read more here: » Casting: Encyclopedia II - Casting - Casting in manufacturing

Casting is a process by which a material is introduced into a mold while it is liquid, allowed to solidify in the shape inside the mold, and then removed producing a fabricated object, part, or casing. Casting is often used for creating one or more copies of an original piece of sculptural (three-dimensional) artwork. It is also used extensively in the automobile manufacture industry, such as the casting of engine blocks or cylinder heads, or vacuum-forming of plastics and in the lost core process. The process, particularly when performed with ...

Including:

Casting - Lost wax casting process Casting - Other casting processes used in creating artworks Casting - Casting in manufacturing
Casting - Expendable mold casting Casting - Nonexpendable mold casting
Casting - Cooling rate Casting - Shrinkage

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Like nearly all materials, metal is less dense as a liquid than a solid, and so a casting shrinks as it cools -- mostly as it solidifies, but also as the temperature of the solid material drops. The shrinkage caused by solidification can leave cavities in a casting, weakening it. Risers provide additional material to the casting as it solidifies. Risers add cost because some of their material must be machined off as waste, but they are often necessary to produce usable parts. Shrinkage after solidification can be dealt with by using an oversized pat ...

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Casting, Casting - Lost wax casting process, Casting - Other casting processes used in creating artworks, Casting - Casting in manufacturing, Casting - Expendable mold casting, Casting - Nonexpendable mold casting, Casting - Cooling rate, Casting - Shrinkage

Read more here: » Casting: Encyclopedia II - Casting - Shrinkage

The Lost Wax casting process is an ancient practice that is still in widespread use today. The process varies from foundry to foundry, but the steps which are usually used in casting small bronze sculptures in a modern bronze foundry are as follows: Sculpting. An artist creates an original artwork from wax, clay, or another material. Wax and oil-based clay are often preferred because these materials retain their softness. Mouldmaking. A mould is made of the original sculpture. Most moulds are at least two pieces, and a ...

See also:

Casting, Casting - Lost wax casting process, Casting - Other casting processes used in creating artworks, Casting - Casting in manufacturing, Casting - Expendable mold casting, Casting - Nonexpendable mold casting, Casting - Cooling rate, Casting - Shrinkage

Read more here: » Casting: Encyclopedia II - Casting - Lost wax casting process