Study of the mechanical properties and corrosion behaviour of AISI 304L by varying welding parameters by Abdus Samad Anwar‚ 070601 Rajesh Kumar‚ 070646 A Project Report submitted in partial fulfillment of the requirements for the degree of Bachelor of Technology in Metallurgical and Materials Engineering Supervised by Prof V.K.Tewari Department of Metallurgical and Materials Engineering Indian Institute of Technology Roorkee May 2011 CANDIDATE’S DECLARATION This is to
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for strength‚ malleability‚ ductility‚ and ability to conduct electricity and heat. It is also non-magnetic‚ resists wear‚ and forms a green patina which makes it resistant to corrosion. Chromite-is the most important ore of chromium from which it derives its name. Chromium is an important metal and has a wide range of industrial uses. Chromite forms in deep ultra-mafic magmas and is one of the first minerals to crystallize. Platinum-is a precious metal; soft‚ silvery-white‚ and dense with a beautiful
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thyroid problems) Iron 59 (half-life of 45.1 days‚ used to examine red blood cells) Molybdenum 99 (half- life of 67 hours‚ used to study metabolism) Phosphorous 32 (half-life of 14.3 days‚ used to study the eyes‚ liver‚ and tumors) Chromium 51 (half-life of 27.8 days‚ used to study red blood cells) Strontium (half-life of 87 2.8 hours‚ used to study bones) Sodium 24 (half-life of 14.8 hours‚ used to study the circulatory system) • Tracers are usually injected into a person’s
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Mutagens may be of physical‚ chemical or biological origin. They may act directly on the DNA‚ causing direct damage to the DNA‚ and most often result in replication error. Some however may act on the replication mechanism and chromosomal partition. Many mutagens are not mutagenic by themselves‚ but can form mutagenic metabolites through cellular processes. Such mutagens are called promutagens. [edit]Physical mutagens Ionizing radiations such as X-rays‚ gamma rays and alpha particles may cause DNA
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tionStudent Name: Laura Scott Student Number: C11356616 Lab Partners Name: Charlotte Weir Experiment Name: Yeast Fermentation Experiment Date: 2nd and 9th November 2011 Submission Date: 23rd November 2011 Title Yeast Fermentation Purpose To allow for fermentation of the yeast‚ Saccharomyces Cerevisiae‚ in Grape and Apple juice. Materials provided Test-tube containing Grape juice and a Durham tube Test-tube containing Apple juice and a Durham tube Plate culture of the yeast
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Kagan McDonald Mrs. Wilmott SAE 2nd 10/1/13 Welding Risk and Safety Precautions Welding is a really good blue collar job that pays well‚ but has its ups and downs. Welders have to deal with hazardous welding fumes that can affect their health in numerous ways. There are several different types of welding fumes and mixtures that a welder can inhale while performing a welding task. A welder’s risk of getting sick from welding depends on the different types of metals being welded and the
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base was added‚ the solution turned into a bright yellow colour. This was difficult to observe as the colour change was very subtle‚ however‚ interpretation was manageable as pH paper was used to find when the addition of base should be stopped. Chromium oxide green was synthesized from the reaction between potassium dichromate and sulfur. The reaction involved heat thus‚ sulfur dioxide gas was released and colour change was observed from bright red to black. The final inorganic pigment was dark
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TANNERY INDUSTRIES IN THE HAJARIBAGH AREA AND ITS IMPACT ON THE URBAN FORM AND MORPHOLOGY [pic] A b s t r a c t Hazaribagh is a densely populated unplanned area of Dhaka city where about 185 leather processing industries have been operating and discharging solid and liquid wastes directly to the low-lying areas‚ river and natural canals without proper treatment. For this unsympathetic development of the city urban living environment is deteriorating and becoming unlivable. Hazaribagh area is
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ion barium ion Ag + silver ion N 3¯ nitride radium ion Ni2+ nickel ion P 3¯ phosphide 3+ 3¯ zinc ion Al aluminum ion As arsenide Systematic name (Stock system) copper(I) copper(II) iron(II) iron(III) tin(II) tin(IV) chromium(II) chromium(III) manganese(II) manganese(III) Common name cuprous cupric ferrous ferric stannous stannic chromous chromic manganous manganic Symbol Hg22+ Hg2+ Pb2+ Pb4+ Co2+ Co3+ Au + Au 3+ Systematic name (Stock system)
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significant‚ are shown in Table 53-6. To sum up 1981 and 1995‚ the progress of the grinding media has taken two big step First‚ forging‚ casting‚ heat treatment‚ a significant reduction in the unit consumption of grinding media; the implementation of low-chromium alloy the low quality of ball gradually out of the market. 10 years in the late 20th century to the early 21st century. A large number of annual handling capacity of below 500 000 t of small iron ore dressing plant growing generally abandoned the
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