Question

An irregular, dense white spot is seen on the radiograph of a weld. Assuming it was caused by the welding process used, which one of the processes below would be responsible?

a) SMAW process.
b) GTAW process.
c) GMAW process.
d) ST process.

Answer 1

The irregular, dense white spot seen on the radiograph of the weld is likely caused by the GMAW process, which involves a wire electrode and shielding gas.

Step-by-step explanation:

The irregular, dense white spot seen on the radiograph of the weld is likely caused by the GMAW process, also known as Gas Metal Arc Welding or MIG Welding. In GMAW, a wire electrode is continuously fed into the weld pool along with a shielding gas, such as argon or a mixture of gases, to protect the weld from atmospheric contamination. The irregular spot could be attributed to excessive heat or improper shielding gas flow, leading to the formation of undesirable weld defects.