Heat Treatment and Qualitative Metallographic Analysis Lab ME 3228: Mechanics & Materials Laboratory Summary Comparing a material’s initial treatment and the microstructures that are formed from different processes‚ an engineer can accurately understand why certain treated materials of the same family can be stronger than another. In this experiment annealed and cold-worked specimens of AISI 1018 STEEL are used‚ along with a Hardness tester‚ a grinding and polishing process‚ and a micrograph
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1. Introduction The Jominy end-quench test is a technique that has the ability to harden the steel by quenching. It is an essential feature of materials that determine the material’s selection for particular applications. The different types of steels and alloys that are used for hardening in an industry are done by this test and considering that this test is a standardised experiment [1]. 1.1 Aim The specimens that are used in this test are normalized in accordance with the standards. The purpose
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The mechanical properties of steel and aluminum material that are used to create the finite element model are listed in table (3-2). Table (3-2) The mechanical properties of steel and aluminum material. Property of Material Modulus of Elasticity (E) Poisson’s Ratio (υ) Yield Stress (σy) Tangent Modulus (ET) Steel (304L) 197Gpa 0.3 0.312Gpa 10Gpa Aluminum (1435) 69.5Gpa 0.3 0.13GPa 0.1Gpa Coulomb Friction The coulomb friction mode1 assumes that there is a tangential force applied along the tool-work
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BLISK 1. BLISK or IBR (Integrated Blade Rotors) are among the most innovative and challenging components in modern gas turbine engines. BLISK may be integrally cast‚ machined from a solid piece of material or made by welding individual blades to the rotor disc. Initially BLISK was used only in first stage LP compressor. Its low weight and excellent aerodynamic efficiency making it popular for use in the HP stage also. CONVENTIONAL DISK Vs BLISK 2. Conventional rotor disk comprises rotor blades
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ME2151-2 METALLOGRAPHY 2012/2013 Department of Mechanical Engineering National University of Singapore CONTENTS TABLE OF CONTENTS LIST OF ILLUSTRATIONS INTRODUCTION METALLOGRAPHIC PREPARATION OF SPECIMENS THEORY OF WELD STRUCTURE SCOPE PROCEDURE REFERENCES LIST OF ILLUSTRATIONS Figure 1 Figure 2 Fe-Fe3C Phase Diagram Schematic of Weld Structures (i) (i) 1 1 2 5 5 6 3 4 INTRODUCTION Metallography can be defined as the visual study of the constitution and structure of materials
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Mohammed Asif M et al studied the impact of heat input on tensile strength‚ toughness‚ micro hardness‚ micro structure and corrosion behavior of duplex stainless steel joints. Four parameters were varied by keeping speed as constant. The heating pressure of 30‚ 40‚ 50 MPa‚ heating time of 3‚ 4‚ 5 sec‚ upset pressure of 60‚ 70‚ 80 MPa‚ upset time of 2‚ 3‚ 4 sec were used to weld the joints. L9 orthogonal design concept was used. Results revealed that no intermetallic phases were formed. By increasing
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Welding ¨Don`t be afraid of the future Build It.¨ Welding has taught that nothing is impossible if you work for it. At first I didn’t listen to my welding instructor so I didn’t learn to weld right. My project ended up not looking right and got a bad score on it. I went back to my welding instructor and learned to weld right so I could make my next project look better. It all started when I didn’t listen. First I didn’t hold my welding gun right so it wouldn’t allow me to make good welds. When
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Lincoln Electric’s key strategic objective deals with its goal of entering into the Indian welding market. There are several options by which Lincoln Electric can enter into the Indian market. It could enter by acquisition‚ joint venture‚ or by building a new plant of its own. This memorandum will evaluate each choice and provide a recommendation for what could be the best alternative for entering the Indian welding market. The recommendation will be determined after a careful evaluation of the several
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encourage competition and quality without a high emphasis on monetary incentives? Examining the arc welding product industry structure will help identify the opportunities associated with that structure. Arc welding is part of the emerging‚ mature‚ and international industry. In an emerging industry an opportunity arises in technological leadership. More specifically‚ firms in the arc welding industry that invest in particular technologies that create greater cumulative volume of production at
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Material Safety Data Sheet COUWELD® EXOTHERMIC WELDING POWDER (MAIN) 1. Description of Substance / Preparation and Company Trade Name: Supplier: COUWELD® EXOTHERMIC WELDING POWDER (MAIN) COUGAR No. 345 of 4 Jinyuan Road Shanghai 201812 China Contact: th Tel: Fax: E-mail: +86-21-59139731 +86-21-59139732 info@cougar-asia.com info@cougarele.com.cn Mr. Anthony Woo 2. Composition / Specification of Components Chemical Name Thermit Welding Powder. CAS No. 7429-90-5 (Aluminium) 7440-50-8 (Copper)
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