WELDING OPERATIONS I - OD1651 - LESSON 1/TASK 1
STARTING THE ARC.
(2) In the striking and brushing method, the electrode is
brought down to the work with a lateral motion similar to that of
striking a match.
As soon as the electrode touches the work
surface, the electrode is raised to establish the arc.
length or gap between the end of the electrode and the work
should be approximately equal to the diameter of the electrode.
When the proper length of the arc is obtained, a sharp crackling
sound can be heard.
(3) In the tapping method, the electrode is held in a position
vertical to the surface of the work.