Q189
The advantage of thermit welding is that
A.
All parts of the weld section are molten at the same time
B.
Weld cools almost uniformly
C.
Results in a minimum problem with internal residual stresses
D.
All of the above
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Advantages of thermit welding is listed below:• The weld formed has high mechanical strength.
• Excellent corrosion resistance as compared with other forms of weld.
• It is highly stable to repeated short circuit pulses.
• The electrical resistance remains unchanged over lifetime of the installation.
• All parts of the weld section are molten at the same time.
• Weld cools almost uniformly.
• Results in a minimum problem with internal residual stresses.