is the process of depositing a wear
resistant alloy material on metal
part by form a protective surface
which resists abrasion, heat, corrosion,
cavitation and other types of wear.
There are three types of welding used
with rods and electrodes - oxy-acetylene
(O-A), gas tungsten arc (GTA), and
shielded metal arc (SMA).Gas metal
arc (GMA) welding is used for wires
while plasma transferred arc (PTA)
is used for powder consumables.