Wire rope

Based on its engineering definition, Wire Rope is assemblage of three or more ropes twisted together for extra strength or a rope made by twisting together several strands of metal wires.

Steel Wire Rope Construction

	IWRC (independent Wire Rope Core) provides good crush resistance and increased strength.
	Fiber Core provides excellent flexibility.

Type of Steel Wire Rope

• Regular Lay Wire Rope
• Non-Rotating Wire Rope
• Plastic Coated Wire Rope
• Shaped Strand Wire Rope

Direction of Lay

Lay	Definition	Characteristics
	Most common lay in which the wires wind in one direction and the strands the opposite direction. (right lay shown)	Less likely to kink and untwist; easier to handle; more crush resistant than lang lay.
	Wires in strand and strands of rope wind the same direction. (right lay shown)	Increased resistance to abrasion; greater flexibility and fatigue resistance than regular lay; will kink and untwist.
	Strands wound to the right around the core. (regular lay shown)	The most common construction
	Strands wound to the left around the core. (regular lay shown)	Used in a few special situations - cable tool drilling line, for example.

OR

• Right Hand Regular Lay
• Left Hand Regular Lay
• Right Hand Lang Lay
• Left Hand Lang Lay

Lay Length

The unit lay length is the distance of the ropes around from the rope core.

Instruction on using wire rope in proper way

1. Remove  :

1. Load and unload rope only by using crane to avoid the rope being damaged
2. Do not move it on accidented ground
3. Always keep the rope clean when cleaning

1. Storage :

1. Rope should be kept in dry and clean warehouse
2. Rope could not been piled up layer by layer when storing
3. Re-lubrication is necessary for long term storage
4. The rope should not be received if it rusts a lot

1. Unreeling

Wire rope must be unreeled or uncoiled as shown below. During unreeling, a helper can use a board as brake to control the spin. Do not pull wire rope sideways off the reel.

 

Excessive handling is not good for wire rope. Avoid winding wire rope directly from a reel onto a smaller drum. The rope will not ‘relax’ and may result in wild and ‘cranky’ behavior.

1. Maintenance :

Rope maintenance requires re-lubrication and if necessary prior cleaning

1. Examinations of wire rope :

1. Rope should be examined periodly and keep record of it
2. The content should include rope abrasion, damaged wire, lubrication, distortion, connecting, fitting and other not good things