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5 Occupations that deal with plants or animals or their products or with food and food processing may expose workers to biological hazards Laboratory and medical personnel also can be exposed to. History of Welding. Welding was used in the construction of the iron pillar in Delhi India, erected about 310 AD and weighing 5.4 metric tons. . History of welding. Welding, was transformed during the 19th century. In 1802, Russian scientist Vasily Petrov discovered the electric arc and subsequently proposed its possible practical applications, including welding.. http://www.gooddirections.co.uk/mach/Mach%20Precision%20Engineering%20Images/Welding%20Metal%20Fabrication%20Home.jpg. Welding 1 . Ibook. Chapter 1 Introduction to gas welding. 1.1 Welding Processes. SOURCE. www.agednet.com. AE240 Arc Welding Safety. Heat for arc welding is obtained by electricity. Electric current flows from a transformer connected to lines from a power plant. Other sources for electricity for welding are electric motors and gas engines driving special generators. . Plasma Arc Welding. Solid State Welding . Radiant Energy Welding Process . Radiant Energy Beam focuses an energy beam on the work-piece. The heat is generated only when the energy . beam . strikes the work-piece. Radiant Energy beam includes . 2013-2015. Manufacturing. . review. Emilien Rigutto - 19.06.15. 1. Summary. Emilien Rigutto - 19.06.15. 2. 1. J3010290 . Drum. and . internal. parts prototype 1. 2. J3014388 Vacuum tank. 3. J3021655 . Presentation by:. N.SHASHANK REDDY-BT14EEE058. NAITIK ATUL SHAH-BT14EEE059. N.HARSHITHA-BT14EEE060. N.HARSHA VARDHAN REDDY-BT14EEE061. NIKITA BHAWARE-BT14EEE062. WELDING. . It is the process of joining two pieces of metal at . Covered in Subpart H, but an integral part of welding, cutting and brazing. Compressed gases-hazards. compressed energy. flammable, asphyxiants, oxidizers. Gases are used for cutting, brazing and “shielding” the weld. A Brief History of Welding. Late 19. th. Century. Scientists/engineers apply advances in electricity to heat and/or join metals (Le Chatelier, Joule, etc.). Early 20. th. Century. Prior to WWI welding was not trusted as a method to join two metals due to crack issues. ran out the Benefaction jelled . water . interactive “shielding envelope” . welding. Leonard M. . Andersen / Wet Welding. POB 1529 / NY, NY 10116 ($1100 per year Caller box at GPO NY, NY) Most Secure Mail Service at Largest Post Office . AKA “Arc Welding. Officially known as: SMAW – “Shielded Metal Arc Welding . “Stick Welding”, AKA “Arc Welding. Officially known as: SMAW – “Shielded Metal Arc Welding . “Stick Welding”, AKA “Arc Welding. CO. Identify joining methods for fabrications, and fabricate simple job using joining method.. ©2010 John Wiley & Sons, Inc. M P Groover, . Fundamentals of Modern Manufacturing. 4/e. Welding. Welding is metallurgical fusion process,where part to be joined by the application of heat and pressure.. Welding Consumables Market study is a complete report which studies the future outlook of the market. It includes the regional analysis, competitors study along with the market segmentation by type and structure. View More @ https://www.valuemarketresearch.com/report/welding-consumables-market MALUTI TVET COLLEGE. LECTURER : MJ MOTAUNG. . . TOPIC :5 UNIT :1. . . GAS TUNGSTEN ARC WELDING. LO :. Explain the terminologies associated with gas tungsten arc welding procedure.. . CONTENTS:. . Introduction. Definitions. Soldering. - Classification of solders. - Classification of fluxes. - Heat source in soldering. - Techniques of soldering.