Extrusion is the process by which a block/billet of metal is reduced in cross section by forcing it to flow through a die orifice under high pressure. • In general‚ extrusion is used to produce cylindrical bars or hollow tubes or for the starting stock for drawn rod‚ cold extrusion or forged products. • Most metals are hot extruded due to large amount of forces required in extrusion. Complex shape can be extruded from the more readily extrudable metals such as aluminium. * The products obtained are also
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was still in air. After noticing all the in flight tear investigators begin to test for metal fatigue on another airplane that BOAC donated. After conducting the test they concluded their investigation by stating the crashed was cause my metal fatigue. After many repeated cycle of pressurization and de-pressurization of the aircraft cabin the cabin began to worn down and break apart. Metal Fatigue: Metal Fatigue is define as the material on an airplane begin to wore out after all the cycle of
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53‚ 0.361) 0.181) Diamond Diamond 0.1 0.05 - 0.1 Diamond Metal 0.1 - 0.15 0.1 Glass Glass 0.9 - 1.0‚ 0.41) 0.1 - 0.6‚ 0.09-0.121) Glass Metal 0.5 - 0.7 0.2 - 0.3 Glass Nickel 0.78 0.56 Graphite Steel 0.1 0.1 Graphite Graphite (in vacuum) 0.5 - 0.8 Graphite Graphite 0.1 0.1 Hemp rope Timber 0.5 Ice Wood 0.05 Iron Iron 1.0 0.15 - 0.20 Lead Cast Iron 0.431) Leather Oak 0.61‚ 0521 Leather Metal 0.4 0.2 Leather Wood 0.3 - 0.4 Leather Clean Metal 0.6 Leather fiber Cast iron 0.31 Leather fiber Aluminum
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nickel salt using a complexometric technique. Ethylenediaminetetraacetic acid (EDTA) is a hexadentate ligand which forms stable complexes with most metal ions‚ thus is widely used to determine metals in complexometric titrations. EDTA can be represented as H4Y and in alkaline conditions‚ it exists as Y+ ions: The Y4- ions form 1:1 complexes with metal ions. For example‚ Ni2+ ions bind with them to form a stable octahedral complex NiY2-. An ordinary indicator cannot be used since the reaction does
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Radha Shukla Determination of the Empirical Formula of Silver Oxide Will/Radha College Chemistry 9/12 – 9/13 9/17 The purpose of this lab is to use one of the ways to identify different compounds and be able to tell them apart. Based off of experimentation‚ the empirical formula of the given silver oxide will be determined. Materials: Chemicals: Silver Oxide‚ 0.5g Equipment: Balance‚ 0.001-g or 0.0001-g precision Bunsen Burner Clay pipestem triangle Crucible and cubicle lid‚ 15-
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Purpose The purpose of this experiment is to observe a redox reaction and understand what it means. We will observe the new bonds formed and the importance of the electron in the formation of these new bonds. Materials Boileezers (boiling chips) Desiccant 0.17M acetic acid (acidified water) Solution of Sodium thiosulfate Granular zinc Iodine crystals Zinc ion and iodine-iodide-triiodide ion in water Solid zinc iodide Mineral oil Silver nitrate Magnesium turnings 3M Hydrochloric acid (HCl) solution
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Based on the above features the most widely used material are cast iron and aluminum alloys to manufacture the cylinder block. Cast iron alloys are used because they contain good mechanical properties‚ low cost‚ and availability compared with other metals. But certain aluminum alloys contain most of the characteristics of cast iron but with low weight. And also aluminum alloy casted engine block gives a good surface finish and high macinability compared with cast iron alloys. As the technology increases
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churches. My first controlled experiment is based on the Statue of Liberty. It is made of copper so I am using pennies in my experiment. (nps.gov. n.d.) My observation is that acid rain corrodes metals. My question: does acid rain corrode metal? My hypothesis is the obvious‚ yes metal structures are in danger of being corroded because of acid rain. That is also my prediction. The experiment will take place over a one month period. I will take two pennies (minted before 1983) and place
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Purpose: To use electrochemistry to extract metals from ionic compounds in solution Procedure: -Start by attaching battery snap connector to a battery and fill beaker with between 100 and 200 mL of copper (II) sulfate solution -Connect clip to each of the nickel strips -Place nickel strips in copper sulfate solution without strips touching -Put one clip on the positive side of the battery and the second to the negative side. Observe -Switch clips to the opposite charged sides of the battery
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which are absent in unit cell of CaCl2-structured polymorph are present in that of tetragonal rutile structured polymorph. CaCl2 and CaBr2 start as a CaCl2-structured polymorph at room temperature. As temperature approaches the transition temperature‚ the MX6 (M is metal cation while X is the halogen anion) octahedron in the centre of the unit cell rotates about the c-axis‚ causing the rectangular base of the unit cell to
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