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Exam (elaborations)

Welding Questions and Answers | Latest Version | 2024/2025 | Correct & Verified

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Welding Questions and Answers | Latest Version | 2024/2025 | Correct & Verified What is the purpose of a root pass in welding? The root pass is the first bead deposited in the joint, ensuring proper penetration and fusion for subsequent layers. How does the heat affect the weld bead? ...

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  • January 7, 2025
  • 12
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Welding
  • Welding
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Welding Questions and Answers | Latest
Version | 2024/2025 | Correct & Verified
What is the purpose of a root pass in welding?


✔✔ The root pass is the first bead deposited in the joint, ensuring proper penetration and fusion

for subsequent layers.




How does the heat affect the weld bead?


✔✔ Excessive heat can cause the weld to become too wide, while insufficient heat results in

poor fusion and weak joints.




Why is cleanliness crucial before welding?


✔✔ Clean materials ensure better fusion and reduce the risk of contamination, such as rust, oil,

or dirt, in the weld.




What causes a weak weld?


✔✔ Weak welds are often caused by improper heat, bad joint fit-up, or incorrect filler material.




What does arc stability mean?


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, ✔✔ Arc stability ensures consistent weld quality, minimizing spatter, burn-through, or poor

fusion.




Why is the weld pool crucial in welding?


✔✔ The weld pool determines the quality and strength of the joint by ensuring proper melting

and fusion of the base and filler material.




What is undercut in welding?


✔✔ Undercut is the erosion of the base material adjacent to the weld bead, resulting in a weak

spot that compromises the joint.




What causes the weld to crack?


✔✔ Rapid cooling, high heat input, or improper filler material can cause cracking in the weld

bead or heat-affected zone.




Why is travel speed important in welding?


✔✔ Proper travel speed ensures correct penetration and bead shape, impacting the overall

strength of the weld.




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