Question

a welder needs to remove slag from welds before applying another layer or restarting.

true
false

Explanation:

Analyze the purpose of slag in welding

Slag is a non-metallic byproduct formed during processes like SMAW or FCAW that protects the cooling weld pool from atmospheric contamination.

Evaluate the necessity of slag removal

If slag is not removed before depositing a subsequent weld bead or restarting an arc, the solid slag will become trapped inside the weld metal. This leads to a structural defect known as a slag inclusion, which severely weakens the joint.

Determine the truth value of the statement

Therefore, a welder must thoroughly clean and remove all slag from the weld bead before applying another layer or restarting the weld. The statement is true.

Answer:

• True (Correct answer)
• False