| Tweet |
Custom Search
|
|
|
||
 TM 55-1905-221-14-3
6-16
PROPELLER, PROPELLER SHAFT, AND STUFFING BOX (Continued)
LOCATION/ITEM
ACTION
REMARKS
REPAIR (Cont)
f.
Damaged, Notched Edges The
.
edges of the straightened
propeller shown in figure
above have notches. Normally
notches of the size shown are
not filled if other vessels
are deadlined for repair.
Damaged edge repair is covered
in paragraphs i, j and k below.
g. Repairs By Welding. The
location of the repair governs
the kind of weld used and the
care necessary. Root sections
of the blade carry more stress
than sections near the tip and
therefore are critical. All
metal deposits above the
surface of the blade will
have to be removed.
h. Repair of Root Sections.
Because of the high stress
on the blade between the hub
and 0.4 radius, any repair
in the root section is consi-
dered major repair, and a
welding procedure that can be
depended upon to produce a
strong, sound weld substan-
tially free of residual
stresses should be used.
Metallic arc welding, multiple-
layer gas welding, and the
hot-flow process are approved
methods for root section
repair.
i.
Repairs In Sections Outside
The 0.4 Radius. Repairs in
these areas are relatively
minor and can be accomplished
with the use of multiple-layer
gas welding or metallic arc
welding.
6-178
|
||
|
||
