Wire Rope Direct News

MAN-MADE FIBRE ROPES, CARE & MAINTENANCE part 2

MAN-MADE FIBRE ROPES, MAINTENANCE, CARE ETC. Part 2

Here we continue with the information on using man-made fibre ropes.

The life of fibre ropes can be considerably extended if cared for inspected regularly and maintained.

INTERNAL WEAR

Internal wear can be detected by the tell tale signs of loosening of strands and the presence of powdered fibre. It is most often caused when grit becomes trapped in a rope which is repeatedly flexed in wet conditions.

OVERLOADING

An overloading fibre rope can be difficult to spot, and therefore a tensile test is invaluable. Check measurements over markers on the rope may reveal local excessive stretch due to overloading, and some hardening of the fibre rope may be seen with a reduction in diameter and considerable reduced extension under load.

CHEMICAL ATTACK

This may be revealed by staining or by ease of plucking or rubbing off filaments or fibres from the yarns.

ATTACK BY HEAT

Revealed by glazing of the rope surface. In extreme cases local fused sections indicate heat through friction and a considerable loss of strength can be expected. If in doubt, do not use

MAINTENANCE AFTER INSPECTION

Cut out local damaged sections if needed, and splice using short butt splice. Do not wait for damaged section to part under strain, as the recoil effect can disturb the lay of rope over a considerable length.

Any rope which has broken due to overload should be discarded

If thimbles are loose in eyes, due to rope stretch, firm up by rack seizing. Never allow a thimble to become so loose that it can rock.

Have all splices properly served or taped, and dogs firm seized. Do not allow any tuck to become undone, every tuck is necessary for the optimum splice efficiently in all rope constructions.

Never dry fibre rope with heat.

Store fibre rope in a cool, dry, well ventilated area, and not exposed to strong light or heat, never store on a concrete or dirty floor, and never store in the same area as chemicals.

SAFETY TIPS

Never stand fibre ropes in rope loops or in the path of a rope under strain, and have as few as men as possible in the area of the rope.

Always use man-made fibre ropes for stoppers on man-made fibre rope hawsers. In preference always use stoppers on the double.

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