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Cast Iron Manufacturing
- By Super Admin
- Published 04/20/2010
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- Unrated
Cast iron has become a synonym for durability — a cast iron stomach, a
cast iron alibi. As metals go, however, it is actually something of a
Brunswick stew. While the pig iron that forms the basis for cast iron
is being melted, scrap iron and steel are often thrown into the mix.When the process is complete and impurities such as sulfur are subtracted, the end product is actually only 95 percent iron. The rest of the chemical makeup is primarily carbon and silicon, in various percentages. Anything over two percent silicon is known as "gray cast iron," while a lesser amount gives birth to "white cast iron." White cast iron is not actually white, but gets its name from a reaction with the increased carbon that creates small white deposits of cementite on an otherwise dark surface.
Aqueduct
- By Super Admin
- Published 04/18/2010
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- Unrated
An aqueduct is an artificial channel through which water is transferred
from one place to another. Aqueducts can be made of many different
types of materials, such as brick, concrete, metal or wood, and
constructed in a variety of ways, for instance as tunnels, canals or
bridges. An aqueduct can transport a small amount of water as well as a
large enough amount that watercraft can even be transported through it,
and the water can be moved through the use of pumps or simply by
gravity.
Air Conditioning Systems
- By Super Admin
- Published 04/18/2010
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Air conditioning is a term referring to any process or system that
controls the temperature, humidity, cleanliness, and movement of indoor
air. When the weather is hot, it cools the air. When the weather is
cold, it warms the air. It also adds or removes moisture to and from
the air as needed. By controlling air movement, air conditioning is
able to remove dust and dirt by bringing fresh air into a space and
pushing stale air out. An air conditioning system is any mechanism
designed to stabilize and control the condition of the air in a given
space, most commonly in buildings, cars, and other forms of public and
private transportation.