PPT-ARC WELDING

INTRODUCTION ELECTRIC ARC WELDING The welding in which the electric arc is produced to give heat for the purpose of joining two surfaces is called electric arc welding Principle Power supply is given to electrode and the work A suitable gap is kept between the work . NMTS seeks out the most qualified inspectors with excellent safety records and retains many outstanding inspectors on our permanent staff. We do a thorough background check on all inspectors prior to mobilizing them to a job site. INTRODUCTION.  . Robot Welding . is a process of joining different materials. . The . large bulk of materials that are welded are metals and their alloys although welding is also applied to the joining of other materials such as thermoplastics. Objectives. In this course, we will discuss the following:. OSHA’s minimum requirements for:. Gas welding and cutting. Arc welding and cutting. Fire prevention. Ventilation and protection. Safe use, handling, and precautions to take when welding and cutting. Definitions. Weld. A localized fusion of metals produced by heating to suitable temperatures. . Pressure and/or filler metal may or may not be used. . The filler material has a melting point . approximately . 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 . 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. Flexible Manufacturing. Copyright © Texas Education Agency, 2013. All rights reserved.. 1. Sheet Metal. There are many types of sheet metals manufactured for various applications. . The sheet metal may be developed to bend, stretch, or to resist corrosion. . T-Joint. T-Joint made by Arc welding. T-Joint made by MIG welding. T-Joint oxygen acetylene. Butt Joint. Butt Weld from Arc Welding. Butt welding using. Oxygen . A. cetylene . Butt Welding using . MIG Welding. GMAW Welder. A constant voltage power supply with a wire electrode feed. May be used with solid or flux core wire. Commonly used with a shielding gas (required for solid wire electrode). Common shielding gasses are carbon dioxcide and argon.. 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 . Know at least 25% of the shop safety terms. Know at least 50% of the shop safety terms. Know at least 75% of the shop safety terms. Know all 100% of the shop safety terms. Review Questions - #1- #10. Chapter 3 Shielded Metal Arc Equipment, Setup, and Operation OBJECTIVES After completing this chapter, the student should be able to describe the process of shielded metal arc welding (SMAW). list and define the three units used to measure a welding current. How an arc is formed. The arc is like a flame of intense heat that is generated as the electrical current passes through a highly resistant air gap.. Arc welding process. Tungsten Inert Gas welding. Welding torch. Hot work . is any work process that produces flames or sparks that present a fire ignition hazard to the surrounding environment and personnel.. Gas torch welding and cutting. . uses a flame to join or cut metal..