WELDING OPERATIONS I - OD1651 - LESSON 1/TASK 2
BUTT STRAP WELDS ON
CRACKED ARMOR PLATE.
plate as shown in figure 34, on the following page.
that are larger than the thickness of the armor plate, a plug
patch of homogeneous metal of the same thickness as the base
metal should be used as shown in figure 35, view B, on page 80.
The correct and incorrect method of preparing and welding the
plug patch is shown in figure 36, views A and B, on page 81.
Small diameter penetrations can be repaired by plug welding
without the use of a patch.
e. Repairing Bulges. Bulges in armor that are also cracked, but
do not interfere with the operation of internal mechanisms in the
vehicle, can be repaired by welding the cracked section using the
procedure described in paragraph c above. For best results, the
bulge should be cut out and a patch inserted.
Bulges in the
armor that interfere with the operation of internal mechanisms
may be removed by grinding or chipping them away. In all