CWB WELDING INSPECTOR LEVEL 3 EXAM PREP QUESTIONS AND ALL MODULES COVERED

CWB WELDING INSPECTOR LEVEL 3 EXAM PREP QUESTIONS AND ANSWERS ALL MODULES COVERED

What is the cause for weld bead cracking in Al?
Hot shortness of Al. Correct ANSWER: Hot shortness of Al.
What are the properties of Al?
1. low density 2. Corrosion resistance 3. High electrical
resistance 4. High thermal conductivity 5. good appearance 6.
toughness at low temps. Correct ANSWER: 1. low density 2.
Corrosion resistance 3. High electrical resistance 4. High
thermal conductivity 5. good appearance 6. toughness at low
temps.
True / False? Al is covered with a coherent oxide.
True. Correct ANSWER: True.
Thermal conductivity of Al is _______ times that of Steel.
4. Correct ANSWER: 4.
Melting point of Al is about _______ of Steel.
half. Correct ANSWER: half.

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