CWB Module 6 ELECTRODES AND CONSUMABLES EXAM QUESTIONS & ANSWERS

CWB Module 6 ELECTRODES AND CONSUMABLES EXAM QUESTIONS & ANSWERS EXAM PRACTICE Today, most mild steel electrodes have a wire core composed of? A) rimmed steel B)semi-killed steel c) fully killed steel d)cold-rolled steel - ️️ fully killed steel EXAM PRACTICE In medium coated electrodes, the percentage of the electrode weight derived from the coating is: a)10-25% b)20-35% c)25-40% d)25-55% - ️️ 20-35% EXAM PRACTICE The main function of slag do not include: a)slowing the critical cooling rate of the weld b)protecting the weld metal from contamination c)reducing the amount of oxygen and other impurities in the weld d) controlling the bead shape and smoothness - ️️ a) slowing the critical cooling rate of the weld EXAM PRACTICE An electrode that is to be used with DC electrode positive current only is: a)E4313 b)E4910 c)E4918 d)E4924 - ️️ b E4910 EXAM PRACTICE The addition of cellulose to an electrode coating will: a) improve the welds ductility b) reduce the weld's ductility c) produce small volumes of gases like CO2 and H2 d) produce a low-hydrogen type weld deposit - ️️ a) improves the welds ductility EXAM PRACTICE