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flask

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flask

1. See powder flask
2. a container packed with sand to form a mould in a foundry
3. Engineering a container used for transporting irradiated nuclear fuel
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

flask

[flask]
(chemistry)
A long-necked vessel, frequently of glass, used for holding liquids.
(metallurgy)
A frame used to hold molding sand in foundry work.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Flask

 

(in the foundry industry), a device for containing the molding sand during packing (that is, for the production of casting molds) and during filling of the mold with molten metal. The simplest flask for a single-use mold is a rigid frame that usually consists of two halves, the cope and drag, which are positioned and fastened together during the mold assembly before pouring. Flasks for shell molding and for casting by the lost-wax method consist of boxes with bottoms. Flasks are made from steel or cast iron by casting, welding, or combined methods (welding of separate cast parts).

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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