digplanet beta 1: Athena
Share digplanet:

Agriculture

Applied sciences

Arts

Belief

Business

Chronology

Culture

Education

Environment

Geography

Health

History

Humanities

Language

Law

Life

Mathematics

Nature

People

Politics

Science

Society

Technology

This article is about the manufacturing process. For other uses, see Casting (disambiguation).
For molding plastics, see Molding (process).
Casting iron in a sand mold
Judenplatz Holocaust Memorial (Nameless Library), by Rachel Whiteread. Concrete cast of books on library shelves turned inside out.

Casting is a manufacturing process by which a liquid material is usually poured into a mold, which contains a hollow cavity of the desired shape, and then allowed to solidify. The solidified part is also known as a casting, which is ejected or broken out of the mold to complete the process. Casting materials are usually metals or various cold setting materials that cure after mixing two or more components together; examples are epoxy, concrete, plaster and clay. Casting is most often used for making complex shapes that would be otherwise difficult or uneconomical to make by other methods.[1]

Casting is a 6000 year old process.[2] The oldest surviving casting is a copper frog from 3200 BC.[2]

Types[edit]

Metal[edit]

Metal casting is one of the most common casting processes. Metal patterns are more expensive but are more dimensionally stable and durable. Metallic patterns are used where repetitive production of castings is required in large quantities.

Plaster, concrete, or plastic resin[edit]

Main article: Resin casting

Plaster and other chemical setting materials such as concrete and plastic resin may be cast using single-use waste molds as noted above, multiple-use 'piece' molds, or molds made of small rigid pieces or of flexible material such as latex rubber (which is in turn supported by an exterior mold). When casting plaster or concrete, the finished product is, unlike marble, unattractive, lacking in transparency, and so it is usually painted, often in ways that give the appearance of metal or stone. Alternatively, the first layers cast may contain colored sand so as to give an appearance of stone. By casting concrete, rather than plaster, it is possible to create sculptures, fountains, or seating for outdoor use. A simulation of high-quality marble may be made using certain chemically-set plastic resins (for example epoxy or polyester) with powdered stone added for coloration, often with multiple colors worked in. The latter is a common means of making attractive washstands, washstand tops and shower stalls, with the skilled working of multiple colors resulting in simulated staining patterns as is often found in natural marble or travertine.

Casting process simulation[edit]

Casting process simulation uses numerical methods to calculate cast component quality considering mold filling, solidification and cooling, and provides a quantitative prediction of casting mechanical properties, thermal stresses and distortion. Simulation accurately describes a cast component’s quality up-front before production starts. The casting rigging can be designed with respect to the required component properties. This has benefits beyond a reduction in pre-production sampling, as the precise layout of the complete casting system also leads to energy, material, and tooling savings.

The software supports the user in component design, the determination of melting practice and casting methoding through to pattern and mold making, heat treatment, and finishing. This saves costs along the entire casting manufacturing route.

Casting process simulation was initially developed at universities starting from the early '70s, mainly in Europe and in the U.S., and is regarded as the most important innovation in casting technology over the last 50 years. Since the late '80s, commercial programs (such as AutoCAST and MAGMA) are available which make it possible for foundries to gain new insight into what is happening inside the mold or die during the casting process.

See also[edit]

Notes[edit]

  1. ^ Degarmo, p. 277.
  2. ^ a b Ravi, B. (2004), Metal Casting, PHI .

Bibliography[edit]

  • Degarmo, E. Paul; Black, J T.; Kohser, Ronald A. (2003), Materials and Processes in Manufacturing (9th ed.), Wiley, ISBN 0-471-65653-4 .
  • Campbell, John (2003), Casting (2nd ed.), Butterworth-Heinemann, ISBN 0-7506-4790-6 .
  • Ravi, B. (2005), Metal Casting: Computer-Aided Design and Analysis (1st ed.), PHI, ISBN 81-203-2726-8 .

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Casting — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
1000000 videos foundNext > 

Casting a Fire Ant Colony with Molten Aluminum (Cast #043)

An amazing sculpture is made by pouring molten aluminum into a fire ant colony. The resulting cast is huge, weighing 17.9 lbs. and reaching a depth of 18 inc...

Mold Making & Casting Tutorial: 73-20 Figurine Mold

We now offer 73-20 in a kit along with EZ Flo 60 resin to make your 1st mold that much easier. Check our webstore for more information. http://www.shop.brick...

Metal Casting at Home Part 10 Another Day in my Home Foundry

How to make a casting from making the sand mould to the finished item. The video has been edited to fit the 10 minute time limit of You tube. It takes much l...

Casting a Aluminium Slingshot (Lost Foam, Investment Casting)

Casting the same slingshot via Green Sand casting http://www.youtube.com/watch?v=CO7QYGdshT4. In this video I show the technique of lost foam casting. Thanks...

Molding & Casting Tutorial: Resin Casting Tips

Here are some basic tips for casting resin parts in silicone molds. In this tutorial we cast both Easy Flo 60 as well as EZ Flo Clear into a 71-11 mold to pr...

CASTING (2011) HD / English subtitles

Short animated movie. Press CC button for english subtitles.

Metal Bars: Casting

In this video, I melt and cast various metals into bar shapes, using graphite crucibles and molds. These sets of metals are sold some places as teaching sets...

Jury in Tränen... 17jähriger rockt Casting Show (GER SUB)

Nach schwerer Kindheit im Irak wird Emmanuel Kellys Traum vom Singen wahr. Mit seinem Auftritt in der australischen Casting Show X-Factor rührt er Ronan Keat...

05) BhtaPeis - To Casting (Baptisma Pyros)

DOWNLOAD ''ΒΗΤΑ ΠΕΙΣ - ΒΑΠΤΙΣΜΑ ΠΥΡΟΣ'' http://bitapeis.gr/home.html Μία πύλη, που αν περάσεις, σε υποδέχονται σκέψεις. Επισκέψεις από ανθρώπους που δεν σκέφ...

Casting a Carpenter Ant Colony with Molten Aluminum (Cast #042)

A cast of a carpenter ant colony is made using molten aluminum to fill the tunnels and chambers. The resulting cast consists of a main shaft with long, irreg...

1000000 videos foundNext > 

1826049 news items

Variety

Deadline.com
Thu, 31 Jul 2014 11:08:02 -0700

EMMYS: TV Academy To Honor Casting Queen Marion Dougherty With Governors Award; Announces Juried Casting director Marion Dougherty will be posthumously awarded the 2014 Governors Award, the Television Academy said today. It will be ...

Boston magazine's Boston Daily (blog)

Boston magazine's Boston Daily (blog)
Mon, 28 Jul 2014 08:00:00 -0700

George Sawin, a florist who works in a building adjacent to Boston Casting, has seen his fair share of individuals lining up on Braintree Street to audition for roles on the big screen—but he's never seen a turnout like the one on Saturday during an ...

moviepilot.com

TIME
Thu, 31 Jul 2014 06:41:00 -0700

Watch Brian Williams Pull The Ultimate Dad Move When Announcing His Daughter's Peter Pan Casting. Laura Stampler @LauraStampler. 9:40 AM ET. SHARE. Adorable. Embarrassing. Brian Williams: News anchor, amateur rapper, embarrassing dad.

Music Times

Music Times
Thu, 31 Jul 2014 08:56:15 -0700

Following the release of a controversial casting call description, the roles of MC Ren and DJ Yella have been cast in the forthcoming N.W.A. biopic. According to Billboard, Aldis Hodge will star as Ren with Neil Brown Jr. as Yella. They join O'Shea ...

Minneapolis Star Tribune

Minneapolis Star Tribune
Thu, 31 Jul 2014 13:26:15 -0700

But my positive vibe was short-lived as I began casting practice at a local park before the trout opener. Something had happened in the last four years. All my accumulated skills and muscle memory had gone missing and atrophied into mush. I felt like ...

Broadway World

TheWrap
Wed, 30 Jul 2014 21:48:38 -0700

The broadcaster never said that Allison was his daughter, and reported the casting like a regular news story, citing additional casting on the special, like Christopher Walken as Captain Hook, as well as Allison's other professional credits, like her ...
 
Hibbing Daily Tribune
Thu, 31 Jul 2014 18:38:36 -0700

Producers of Sdanka's War, the action film set in Eastern Europe that is having some scenes shot on the Iron Range, has added another casting call this week. The Pyhala Homestead in Embarrass was staged for some filming Thursday.
 
Chicago Tribune
Mon, 28 Jul 2014 09:37:00 -0700

“Sinister 2” needs kids and teenagers to serve as extras when the sequel begins filming in the Chicago area next month. Joan Philo Casting is looking for 7-18 years old of all shapes and sizes and an overweight male 12-15 years old, according to ...
Loading

Oops, we seem to be having trouble contacting Twitter

Talk About Casting

You can talk about Casting with people all over the world in our discussions.

Support Wikipedia

A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia. Please add your support for Wikipedia!