Purpose: In this lab‚ we will heat up a metal rod and measure how much it expands. We will calculate its Coefficient of Linear Expansion‚ α‚ and prove the formula for thermal expansion‚ ΔL = αLiΔT. Also‚ we heat up a known volume of methyl alcohol and calculate its Coefficient of Volume Expansion‚ β‚ and prove the formula for volume expansion of a liquid ΔV = βViΔT. Equipment: Hollow Metal Rods of different metals‚ Steam Generator‚ Stand‚ Burner‚ Flexible Hoses‚ Motion Amplifier‚ Micrometer
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STRENGTHENING OF METALS There are 4 major ways to strengthen metals‚ and all work because they make dislocation motion more difficult. They also reduce the ductility: 1) Cold work (Strain Hardening) 2) Reduce grain size (Strengthening by Grain Size Reduction) 3) Add other elements in solid solution (Solid Solution Strengthening) 4) Add second phase particles (Precipitation or Age Hardening) • These mechanisms may be combined. • For example‚ the world’s strongest structural material (with
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Scrap Metal To Inform To inform my audience that scrap is a commodity often confused with waste. Scrap has monetary value making up one of the largest exports of the United States. Introduction I. Scrap is a $65 billion dollar industry in the United States. The U.S exports $15.7 billion to other countries. II. While this is a global industry it all starts with local entrepreneurs like me. III. Scrap is everything that we throw away that can be recycled and used to make new products.
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Our client has an immediate need for an Sheet Metal Fabrication Programmer Job Duties are: -Analyzes part of drawings‚ specifications‚ and design data. -Works from written specifications‚ blueprints‚ and/or shop drawings to write CNC programs of machine instructions through the use of a computer. -Will create‚ maintain‚ and troubleshoot programs for AMADA turret/punch press and laser cutting machines. -Will setup and operate machines when not programming. -Will field operator comments‚ questions
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ABOUT LAN SAMANTHA CHANG Lan Samantha Chang ’s fiction has appeared in the Atlantic Monthly‚ Story‚ and The Best American Short Stories. A graduate of Yale University and the University of Iowa‚ she divides her time between Northern California and Princeton‚ New Jersey. AN INTERVIEW WITH LAN SAMANTHA CHANG Many of the families in Hunger have attempted to sever themselves from the past in order to build a future. Was this how your parents coped with starting over in America? What parts of Chinese
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Heavy Metal Music Good morning to our lecturer and my fellow friends. Today‚ I’m going to inform you about my favourite music genre‚ the heavy metal or metal. I’ll talk about its origin‚ characteristics and its evolvement. I am pretty sure that all of you are not fans of heavy metal. Perhaps‚ some of you did not even heard of it. Heavy metal ‚ often referred to as metal ‚ is a genre of rock music that developed in the late 1960s and early 1970s with roots in blues rock and psychedelic rock. Heavy
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America‚ we often hear it called “the land of the free”‚ but is this a true statement? When Kimberly Chang‚ the main character of the book “Girl in Translation”‚ and her mother move here from Hong Kong this is the vision they have in their minds. A land of opportunity for them to better their lives since Kimberly’s father passed away. Sadly‚ when reaching their destination‚ they quickly learn that this is not the reality for many immigrants in the United States‚ including them. Even with the help
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TOPIC 2 Metals The History of Metals * Uses of metals through history: * Copper Age (3200-2300 BCE) – copper and tin were most common metals‚ and were used for ornaments‚ weapons and tools. * Bronze Age (2300-700 BCE) – copper‚ tin and bronze were used for tools‚ weapons and transport. They produced bronze by heating copper and tin with charcoal. * Iron Age (1000 BCE – 1 CE) – iron steel and lead was used for tools‚ weapons and pipes. Iron is much harder than bronze.
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26 2.3 Metal Forming Valery Marinov‚ Manufacturing Technology SHEET METALWORKING Classification of Sheet Metalworking Processes Basic sheet metalworking operations: (a) bending‚ (b) drawing‚ and (c) shearing; (1) as punch first contacts sheet and (2) after cutting. Force and relative motion are indicated by F and v Cutting Operations Shearing Shearing is a sheet metal cutting operation along a straight line between two cut-ting edges by means of a power shear. Shearing
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The brass alloy we are experimenting on is called Muntz Metal. Muntz metal is 60% copper‚ 40% zinc and a hint of copper [http://en.wikipedia.org/wiki/Muntz_metal] (accessed 4/10/12). Muntz metal was developed as an alternative to expensive‚ heavy copper. It is comprised of about 60% copper and about 40% zinc‚ with a small amount of iron. The finished product actually is considered a form of brass‚ but it has maintained its name of Muntz metal. [http://www.wisegeek.com/what-is-muntz-metal.htm] (Accessed
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