Advanced
Process or AP weld studs are so named because they can be
used with a variety of stud welding processes. These processes
include: drawn arc (typically short arc), capacitor discharge
(drawn arc style CD), gas metal arc (also short gas metal
arc). Since none of these processes use a flux load, typical
weld penetrations are not as deep. Also, none of the AP processes
typically require a ferrule. While this is an advantage from
a material handling perspective, there is no fillet control.
No fillet control means that the fillet can be somewhat random
and unpredictable. This is particularly true when arc blow
is a factor. Overall, this style of stud is economical and
flexible and can fulfill the requirements of many applications.
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