Figure 25A. METHOD A: Lay one end
of
the seizing wire in the groove
between two strands; wrap the other
end
tightly in a close helix over a por-
tion
of
the wire in the groove using a
seizing iron (a round bar
112"
to 5/8"
diameter x 18" long) as shown above.
Both ends
of
the seizing wire should be
twisted together tightly, and the fin-
ished appearance as shown below.
Seizing widths should not be less than
the rope diameter.
Figure 25B.
METHOD
B:
The proce-
dure illustrated at right is another
method
of
seizing wire rope.
SEIZING WIRE ROPE
While there are numerous ways to cut wire rope, in every case, certain precau-
tions must be observed. For one thing, proper seizings are always applied on
both sides
of
the place where the cut is to be made. In a wire rope, carelessly or
inadequately seized ends may become distorted and flattened, and the strands
may loosen. Subsequently, when the rope is operated, there may be an uneven
distribution
of
loads to the strands; a condition that will significantly shorten the
life
of
the rope.
The two widely accepted methods
of
applying seizing are illustrated in Figures
25A and 25B. The seizing itself should be soft, or annealed wire
or
strand.
Seizing wire diameter and the length
of
the seizing will depend on the diameter
of
the wire rope; the length
of
the seizing should never be less than the diameter
of
the rope being seized. Normally, for preformed ropes, one seizing on each
side
of
the cut
is
sufficient. But for ropes that are not preformed or rotation resis-
tant ropes, a minimum
of
two seizings on each side is recommended; and these
should be spaced one rope diameter apart (Fig. 26).
Other methods
of
seizing may be acceptable depending on the level
of
pre-
forming
of
the rope. Non-preformed
or
partially preformed ropes require special
attention and correct seizing is very important.
Seizing
of
preformed ropes may
be accomplished by methods such as plastic
wire
ties, hose clamps, some types
of
tape, etc.
The most important factor in the seizing
of
any rope is that the rope does not
deform and the rope lay does not change when the rope is cut.
Table 4 lists suggested seizing wire diameters for use with a range
of
wire rope
diameters.
30 • Wire Rope Technical Board - Wire Rope Users Manual, Fourth Edition
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