CWB Module 4 Welding Processes and Equipment Review Questions and Answers

Active Flux significantly influence the weld puddle - add manganese, silicon, chromium to weld metal - typically bonded type flux Arc Blow The deflection of an arc from its normal path due to magnetic forces. Autogeneous Weld A fusion Weld made without filler metal Duty Cycle The time during a ten-minute test period, expressed in percentage, that a power source can operate at the rated output without overheating Fused Flux A granular flux produced by mixing the ingredients, followed by melting, cooling to the solid state and processing to produce the desired particle size Heat Affected Zone (HAZ) The portion of the base metal adjacent to a weld which has not been melted, but the metallurgical microstructure and mechanical properties have been changed by the heat of welding, sometimes with undesirable effects. Neutral Flux make minimal changes to the weld pool composition Non Consumable Electrode An electrode that does not provide filler metal What are the eight categories that welding processes are grouped as? Arc Welding (AW) Solid State Welding (SSW) Resistance Welding (RW) Oxyfuel Gas Welding (OFW) Soldering (S) Brazing (B) Other Wleding Allied Processes (ie cutting & Thermal Spraying) What are the two main methods of Arc Shielding? Flux Shielding Gas Shielding What direction do electrons flow? Negative to Positive