CWB 2 Visual Weld Inspector Exam with complete solutions

A consumable electrode is: - ans ----AN electrode which melts and provides metal to fill the joint The weld heat affected zone is: - ans ----the portion of the base metal adjacent to the weld metal whose properties have been changed due to the heat of welding When an arc is formed between two electrodes - ans ----electricity flows from negative cathode to positive anode The magnetic pinch force helps in the process of the detaching the molten metal drops from the electrode tip. The magnetic force - ans ----increases as the square of the current causing smaller and smaller droplets to be detached The electric current for welding must be transformed from - ans ----High voltage, low amperage to low voltage, high amperage The major advantage of electron beam welding process is - ans ----full penetration welds on thick material in one pass The progress of welding with Electroslag welding process is - ans ----Vertical up Explosion welding - ans ----is solid state process in which coalescence is produced through high speed impacting of two or more materials by controlled detonation A typical application for thermite welding is - ans ----joining of rails Welding without filler metal with GTAW process is referred to as - ans ----autogenous welding A typical weld flaw associated with GTAW process is - ans ----porosity SMAW power sources typically have a volt-ampere curve that is - ans ----drooping