TM 5-628/AFR 91-44
m. Flaking.
(1) Description. A progressive horizontal
separation on the running surface near the gage
corner often accompanied by scaling or chipping.
Flaking should not be confused with shelling as
flaking occurs only on the running surface near the
gage corner and is not as deep as shelling. Flaking
is not a critical defect.
(2) Appearance in track. Can be recognized
by one or more of the following characteristics:
(a) Shallow depressions with irregular
edges occurring on the running surface near the
gage corner. Generally flaking will occur within
(0.25) inch of the corner of the rail.
(b) Horizontal hairline cracks along the
running surface near the gage corner of the rail
head, resembling small slivers (fig B-11).
n. Flowed rail.
(1) Description. A rolling out of the tread
metal beyond the field corner with no breaking
down of the underside of the head. Flow is not a
critical defect.
(2) Appearance in track.
B-5
Previous Page
