CWB 2 Module 9 Questions correctly answered graded A+

CWB 2 Module 9 QuestionsDuring arc welding there is a zone adjacent to the weld metal that reaches high temperatures but does not melt. What is the name of this region? - correct answer The Heat Affected Zone Not all the heat energy produced during welding will enter the plate as heat energy. What is this phenomenon known as? - correct answer The Efficiency With manual welding the technique will influence the energy input. Of the following techniques, which involves the higher energy input? A) Weaving techniques B) Depositing stringer beads - correct answer A) Weaving techniques Considering that increasing the heat input will reduce the cooling rate, is the following statement true or false? For thick plates, the cooling rate is inversely proportional to the heat input. - correct answer True The metallurgical changes that occur in the HAZ will be dependent on the peak _________. - correct answer Temperature Regions that are close to the fusion boundary can experience temperatures sufficiently high enough that growth of the _____________ occurs. - correct answer Austenitic Grainstructure True or False? One feature of hydrogen cracking is that it only occurs when the weld and heat affected zone are at high temperatures. - correct answer False True or False? Welding over a gap in the backing bar of a complete penetration weld may result in a transverse crack in the weld metal. - correct answer True In the heat affected zone of a weld in carbon steel, fast cooling rates will form a hard _________________. - correct answer Martensitic Microstructure Which of the following types of steel is the least susceptible to hydrogen cracking in normal circumstances? A) High strength, high hardness steels B) Low strength, low hardness steels C) All steels have the same susceptibility to hydrogen cracking - correct answer B) Low strength, low hardness steels True or False? The carbon equivalent formula available in CSA W59 is one of several possible formulas available. - correct answer True Which crack susceptibility test uses plates of different thicknesses to change the cooling rate? - correct answer Controlled Thermal Severity (CTS) True or False? Solidified weld metal will have a microstructure the same as that of the parent material (plate) - correct answer False The proportion of parent metal melted into the weld is known as the _____________. - correct answer Dilution