Archive for September, 2011

Steel Pipe - a Definition

Pipe is a hollow tube with round cross section for the conveyance of products. The word pipe is used as distinguished from tube to apply to tubular products of dimensions commonly used for pipeline and piping systems. Pipe are made in many materials including ceramic, fiberglass, many metals, concrete and plastic. Typically metallic piping is made of steel or iron, such as unfinished, black (lacquer) steel, carbon steel, stainless steel or galvanized steel, brass, and ductile iron. Lead piping is still found in old domestic and other water distribution systems, but it is no longer permitted for new potable water piping installations due to its toxicity.

Steel Pipe
Many industrial and government standards exist for the production of pipe and tubing. There are three processes for metallic pipe manufacture. Seamless pipe withstands pressure better than other types, and is often more easily available than welded pipe. Welded (also Electric Resistance Welded (“ERW”), and Electric Fusion Welded (“EFW”)) pipe is formed by rolling plate and welding the seam. Large-diameter pipe (25 centimetres (10 in) or greater) may be ERW, EFW or Submerged Arc Welded (“SAW”) pipe.

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What is Nanoparticle ?

Nanoparticles are particles that have one dimension that is 100 nanometers or less in size.The properties of many conventional materials change when formed from nanoparticles. This is typically because nanoparticles have a greater surface area per weight than larger particles, this causes them to be more reactive to certain other molecules. 

Nanoparticle

Nanoparticles are used, or being evaluated for use, in many fields. The list below introduces many of the uses under development. You can use the links in each paragraph to go to a detailed explanation. Particles are further classified according to size : in terms of diameter, coarse particles cover a range between 10,000 and 2,500 nanometers. Fine particles are sized between 2,500 and 100 nanometers. Ultrafine particles, ornanoparticles are sized between 100 and 1 nanometers. Nanoparticles may or may not exhibit size-related properties that differ significantly from those observed in fine particles or bulk materials.Nanopowders are agglomerates of ultrafine particles, nanoparticles, or nanoclusters. Nanometer-sized single crystals, or single-domain ultrafine particles, are often referred to as nanocrystals.

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Sheet Metal

Sheet metal is simply metal formed into thin and flat pieces. In 1887, Robert Kellerstrass, secretary of the Tin and Cornice Makers Association of Peoria, Illinois—a local sheet metal workers’ union—began agitating for the formation of a national sheet metal workers’ union. The union was founded on January 25, 1888 in Toledo, Ohio, as the Tin, Sheet Iron and Cornice Workers’ International Association. A second Canadian local formed in Montreal in 1900, and a Vancouver local in 1902.

Sheet metal is simply metal formed into thin and flat pieces

The union joined the American Federation of Labor (AFL) in 1889. The Panic of 1893 weakened the union significantly, however, and the union’s finances collapsed. The AFL revoked the Tin, Sheet Iron and Cornice Workers’ charter in 1896, even though many locals continued to exist.

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Application of Nanotechnology

With nanotechnology, a large set of materials and improved products rely on a change in the physical properties when the feature sizes are shrunk. Nanoparticles, for example, take advantage of their dramatically increased surface area to volume ratio. When brought into a bulk material, nanoparticles can strongly influence the mechanical properties of the material, like stiffness or elasticity. In the construction industry, nanotechnology has potential to improve.

Nanomedicine is an application of nanotechnology in the field of medicine

construction materials, including steel, polymers and concrete. There are numerous applications of nanotechnology. Many everyday products are the direct result of nanotechnology applications. The manipulation of particles that are smaller than most people can imagine is able to create products that enrich our everyday lives.

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What is TIG WELDING ?

Gas tungsten arc welding (GTAW), also known as tungsten inert gas (TIG) welding, is an arc welding process that uses a nonconsumable tungsten electrode to produce the weld. The weld area is protected from atmospheric contamination by a shielding gas (usually an inert gas such as argon), and a filler metal is normally used, though some welds, known as autogenous welds, do not require it. A constant-current welding power supply produces energy which is conducted across the arc through a column of highly ionized gas and metal vapors known as a plasma.

TIG Welding Processing

Gas Tungsten Arc Welding (GTAW) is frequently referred to as TIG welding. TIG welding is a commonly used high quality welding process. TIG welding has become a popular choice of welding processes when high quality, precision welding is required.

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    • Magnetic Nanoparticle October 7, 2011
      High capacity information storage, for instance, requires smaller particle size that decreasing the particle size lowers the anisotropy energy responsible for holding the magnetic moments along certain directions and it becomes comparable to the thermal energy. […]
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      Nanorobotics is the emerging technology field of creating machines or robots whose components are at or close to the microscopic scale of a nanometer (10?9 meters). […]
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