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Materials Science and Manufacturing Engineering Miscellaneous

Materials Science and Manufacturing Engineering

  1. High alloy steel components are preheated before welding for reducing
    1. heat affected zone
    2. total energy consumption
    3. total time of welding
    4. welding stresses
Correct Option: D

Due to preheating, thermal conductivity will decrease so less thermal stressese and hence less distortion will take place.



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