Welding Questions and Answers 100% Pass

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Welding Questions and Answers 100% Pass Name three principle types of welding. ✔✔Gas welding, electric arc welding, and electric resistance welding. What are some advantages of gas shielded ar... c welding? ✔✔The weld is stronger, more ductile, and more corrosion resistant. Which method of welding is less likely to cause buckling or warping of thin metal sheets? ✔✔Electric arc (or TIG) welding. What is the purpose of shielding an arc weld with and inert gas? ✔✔The gas prevents atmospheric oxygen and/or nitrogen from contaminating the weld. What is a common method of controlling expansion when welding a joint? ✔✔Place tack welds along the length of the joint. What is the effect of inadequate penetration on a weld? ✔✔The weld will be weak. What is the purpose of the flux used with brazing and silver soldering? ✔✔The flux cleans the base metal by removing any oxide film. What type of flame is used when torch brazing or silver soldering? ✔✔A neutral flame. What must be done to soldering iron tip to increase the amount of heat transferred from the tip to the work? ✔✔The tip must be clean of all contaminates and properly tinned. What is the preferred for welding aluminum? ✔✔Tungsten Inert Gas (TIG)welding. What is the preferred method of welding magnesium? ✔✔Tungsten Inert Gas (TIG)welding. What precautions must be observed in order to weld titanium? ✔✔All traces of oxygen and nitrogen must be kept away from the weld area. Describe one type of repair that could be made to a dented steel tube cluster joint? ✔✔A formed steel patch plate could be welded over the damaged area. How can a soft flame be obtained without reducing the heat output of the torch? ✔✔Use a larger tip and adjust the gas pressure accordingly. What factors determine the amount of heat delivered by a gas welding torch? ✔✔The size of the torch tip and gas pressure. When an oxyacetylene torch is extinguished, which valve is turned off first? ✔✔Turn off the acetylene gas valve first. When a gas welding project is completed, what safety precautions should be accomplished? ✔✔All the valves are turned off and the gas pressure are relived. What should be done to a heat-treated aluminum part after welded repairs are completed? ✔✔The part must be re-heat treated. Welding magnesium can create a serious safety hazard. What is the nature of this hazard? ✔✔Magnesium burns with a very hot flame that is very hard to extinguish. What technique might be used to enable a tight-fitting inner sleeve to be inserted into a tubular repair? ✔✔The inner tube could be chilled with dry ice or in a freezer while the outer tube could be heated slightly with a torch. [Show More]

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