has a carbon content of 2% - 4%, roughly 10 times as much as most steels. The high carbon content causes the carbon to form flakes of graphite. This graphite gives gray cast iron its characteristic appearance when fractured.When castings are made, molten iron is poured into a mold and allowed to slowly cool. When this high carbon material is allowed to cool slowly, crack free castings can be made. Remembering this is helpful when welding cast iron: during and after welding, the casting must either
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Although the the indus valley civilization, also known as harappan civilization, was known for its very well planned irrigation system and town planning. Another part of its culture was found in its art. A veriaty of terracotta and metal toys have been excivated. They include animals with movable heads, wheeled birds, monkeys and a whole lot of other little toys. A large number of female figurines were made using terracotta. These figurines are beaded with heavy headgear and ornaments
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conducted of welders exposed to small amounts of manganese particles, below the OSHA standards, have shown signs of neurological problems ("Disturbing Symptoms Discovered in Welders," 2017). Just because you are welding a small piece of two pieces of metal together doesn’t mean you’re not exposed to health hazards. This paper will focus on welding fumes, one of the most exposed health hazard for
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the environment and also be educated on what they can do to help. We need to recycle aluminum because it saves natural resources, time, money, and energy. In one year, the United States produces 160 million tons of garbage, this is enough metal to build two million automobiles, enough wood to construct a million homes, enough paper to publish all the daily newspapers in the country, enough aluminum to rebuild the entire American fleet 71 times, and would fill 11 million garbage trucks.
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Nuclear Power Radioactive wastes, must for the protection of mankind be stored or disposed in such a manner that isolation from the biosphere is assured until they have decayed to innocuous levels. If this is not done, the world could face severe physical problems to living species living on this planet. Some atoms can disintegrate spontaneously. As they do, they emit ionizing radiation. Atoms having this property are called radioactive. By far the greatest number
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------------------------------------------------- Structure of the Interior of Earth Earth has a diameter of about 12,756 km (7,972 mi). The Earth's interior consists of rock and metal. It is made up of four main layers: 1) the inner core: a solid metal core made up of nickel and iron (2440 km diameter) 2) the outer core: a liquid molten core of nickel and iron 3) the mantle: dense and mostly solid silicate rock 4) the crust: thin silicate rock material The temperature in the core is hotter than the Sun's
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in all three states in pure form Solid (citric acid) Liquid (sulphuric acid H2SO4, carbonic acid H2CO3) Gas (hydrogen chloride HCl) Electrical conductivity Electrical conductor Electrolytes Conduct electricity in aqueous/ molten states Chemically decomposed upon conduction of electricity Mobile ions present: H+(aq) and other anions Conductivity of dibasic acid > monobasic acid More H+(aq) produced by dibasic acid of the same molarity Action on damp blue
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to invest in it as soon as you can. 2.0 Iron Iron is a heavy metal found almost everywhere on earth and has been used since ancient times for everything from construction work to medical application. On the periodic table it is shown in its pure form as 5526Fe and has a half-life of about 2.6 Million years. It is estimated that 1/3 of the earths entire mass is iron, mostly molten underneath the earths crust meaning there is enough iron to make 3 planets with the same amount
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pyroclastic flows. The lahars or volcanic mudflows can submerge large amounts of land and damage homes, highways, bridges and pipelines. Lahars are very likely to happen due to the ice on the mountaintops and loose volcanic rocks. Lava flows contain hot molten rock and moves downward similar to a stream of water. Although lava flows are easily avoided, they are very destructive due to the hot temperatures. Pyroclastic flows are not as common as lahars and lava flows but are still very dangerous. This type
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Chasen Bruno Carla Chwat English 1101 April 13, 2016 Attacks on 9/11 - Annotated Bibliography "9/11 Attacks." History.com. A&E Television Networks, 01 Jan. 2010. Web. 11 Apr. 2016. In this article, the authors explain all of the events that took place on September 11, 2001. The authors explain how 19 militants associated with the Islamic group al-Qaeda hijacked four planes and carried out suicide attacks against targets in the United States. The Authors explain how two massive Boeing 767
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