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    History Of Vikings

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    lakes and rivers to get there. Although Damascus steel is in a different class of steel, crucible steel has a very similar composition chemically. However crucible steel was forged very differently, as it cooled the steel would formed large crystals that interlocked with eachother making it very strong. With the most careful of forging, these crystals would form a surface pattern on the blade. It is thought to be highly probable that the crucible steel that used to forge the Ulfberht swords actually

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    arch161

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    Upon closer inspection of the Matchbox, the complexity of the design and construction are visible. The basic structural principle of the design is a concrete core to the building which in turn carries the load of the four sided cantilever through a steel frame. The core of the building is used in two different ways. The carrier of the load as previously mentioned but also the core is predominantly where all of the services for the building are, such as staircases, elevators and restrooms. This enables

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    Maraging steels of different compositions have been prepared by means of induction furnace electro slag remelting technique using titanium and chromium instead of cobalt which is a high expensive strategic element, also nickel content was reduced to 10-13%. Mass attenuation coefficients, half value layers and effective atomic numbers have been determined for the prepared samples at photon energies 238, 583, 661, 911, 1173, 1332 and 2614keV. The results are compared with the corresponding theoretical

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    Steel Manufacturing

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    the modern industries, steel has been discovered to be the central supporting part of most manufacturing industries or production industries. Steel is a relatively cheap and versatile material used in the production of about every kind of good or machinery, and because of this steel is vital in the modern style of living and for the economic well-being. Additionally, because of the essential functions played by steel in general economic and infrastructural development, the steel industry on the other

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    Jewelry Making: Hydraulic Die Forming

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    the more artistic use of, producing form in silver and gold. In order to achieve this smaller, cheaper scale of die-forming experiment were conducted by Richard Thomas and Ruth Girard, which eventually led to the development of the pourable epoxy steel...

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    Resistance Welding Essay

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    The process involves using resistance welding to join the seams of similar types of metals, usually to make a cylindrical type product. Resistance seam welding is used to make cans, fuel tanks, and steel drums. The approach is most effective when the seams is straight or has a regular curvature arc. It is also capable of producing an air tight and leak proof seal, which is important in certain types of metal containers such as engine mufflers or gasoline

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    The technique of welding of joining two pieces of metal together has been around from the  Bronze and Iron Ages. A welder is given tasks involving join two or more pieces of metal together by different welding processes.Metal fabrication has been a good introduction to the world of welding, peaking interest and excitement about this career. The work environment of a welder would be in a shop, assembly line, or on a construction site. A welder typically works an eight to twelve-hour shift, including

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    1950’s, and developed in the 1960’s. Also known as explosion cladding, or explosion bonding, the welding process uses extremely high amounts of pressure to bond, sometimes highly dissimilar metals together, such as copper and stainless steel, or aluminum and carbon steel, to make a product with various desirable properties of both metals. According to High Energy Metals Inc. one of the many difficulties of Explosion welding is calculating

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    The effect of alloying elements on aluminium alloy sacrificial anode was also studied and it was found that the alloying element which have large potential difference from aluminium resulted in alloys with potentials more anodic than unalloyed aluminium. Mercury, the potential of which differs most greatly from that of aluminium, caused a maximum effect on aluminium potential. Effect of some alloying elements on aluminium alloy as sacrificial anode is given below: 1. Magnesium: The solubility of

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    structural supporting system. Based on the theory of Column Failure Theory, 90% strength of a steel framed structure would be destroyed at a temperature of 800oC. As a result, the fires were hot enough to weaken the columns and cause floors to sag, pulling perimeter columns inward and reducing their ability to support the mass of the building above. The high temperatures in the fires weakened the steel beams and columns, causing them to become "soft and mushy", and eventually they were unable to

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