General Studies · Welding
What is the primary objective of post-heating a cast iron joint immediately after welding?
- 1To melt any remaining weld slag
- 2To accelerate the cooling rate of the weld zone
- 3To relieve residual stresses and prevent cracking in the joint✓
- 4To ensure deeper penetration of the filler metal
Correct answer
To relieve residual stresses and prevent cracking in the joint
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