Explain the concept of interpass temperature and why it matters.

Explain the concept of interpass temperature and why it matters.

• A. Temperature of the joint area between passes; keeping it controlled reduces cracking risk and hydrogen diffusion.
• B. Temperature of the welding machine; affects arc stability.
• C. Ambient shop temperature only affects worker comfort.
• D. Temperature of the shielding gas; it affects weld color.

Answer: (A)