GAS METAL ARC WELDING - Quiz

1) What is the name of the welding defect, with weld metal contracting during welding process?

Distortion Excessive penetration Lack of penetration Porosity

2) What is the name of the defect occuring to an unsteady hand in GMAW?

Over fusion Burn through Distortion Waviness of bead

3) What defects occurs to a weld joint, if it is provided with insufficient heat input?

Lack of fusion Lack of penetration Lack of metal deposit Uneven bead deposit

4) What gas combination will reduce spatter defect and improve arc stability in a MIG/MAG welding process?

CO2 / Neon Argon / CO2 Helium CO2 Argon / CO2 / O2