Wire Rope Strand Construction

Wire Rope Strand Construction

Seale
In this design,the outer layer has a predetermined number of large wire. Thay are laid around an equal number of small inner wires in such a manner that the outer wire lie in the valley of the under lying wires. The advantage of this form is in its more abrasive surface.

Warrington
In this design, a layer of pairs of wire(one large and one small) is laid over an inner layer of wires. The number of those in the outer layer. In this formation the strand is more roundish. It has more wearing surface.

Filler
In this design, the intermediate layer has a warrington relationship with the outer.

Warrington-Seale
In this design, the intermediate layer has a warrington relationship with the outer.

Compacted strand
Strand which has been subject to a compacting process such as drawing rolling or swaging whereby the metallic cross-sectional area of the wires remains unaltered whereas the shape of the wires and the dimension of the strands are modified.

Shaped strand
Shaped have greater surface area of steel. The shaped strand rope have about 15% greater cross sectional metallic area, hence they are stronger and have longer life.

Cross lay
Multiple operation strand construction in which the wires of superimposed wire layers cross over one another and make point contact.

Parellele Lay Rope
The lay pitch of all the wires in the strand is the same. The wires of every layer in the grooves which the wires of inner layer. The wires are in the linear contact state, and the structure of the strand is tight. So the Parallel Lay Rope has a bigger breaking force, when it is being used, it does not have quadratic quadratic bending stress between the wires of every layer, and it has good anti-fatigue character.

Compacted Strand Rope:
The wires in the strand are in the facial contact state. The metal block-coefficient of the wire rope is big, and the structure of the strand is tight. When the wire rope is being used, it does not have quadratic bending stress between the wires of every layer, and has small contact stress. It has big mating surface between the wire rope and the sheave groove. So the Compacted Rope has good antifriction, anti-extrusion and anti-fatigue character, and it is not easily distortion.

Steel Core Rope
The Steel Core Rope has a big breaking force, and a good resistance to impact, high temperature and extrusion.

If you need to buy wire rope, pls tell us:

1.     structure of wire rope

2.     diameter

3.     tensile grade

4.     lay type

5.     galvanized or ungalvanized

6.     quantity

7.     packaging: iron wheel

8.     application

9.     delivery time

10.   Place of delivery

11.   Production standards

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Basic Knowledge of Wire Ropes (Ⅰ)

Wire Part of Wire Rope

Wire rope consists of several strands laid helically in one or more layers around a core. Each strand is likewise made of metal laid together like a helix.

Definitions of symbols used

A. Nominal rope diameter in mm


B. Rope construction
   Rope class(e.g 6x19)
   Strand construction
   S    Seale
   W    Warrington
   F    Filler
   WS   Warrington-seale


C. Rope core

Fiber Core(FC)

Steel Core(WC)
IWRC     (Independent wire rope core)
WSC      (Wire strand core)
PWRC     (Parallel wire rope core)


D.  Nominal tensile grade of wire in N/MM2


E.  Wires
    U     Bright(ungalvanized)
    B     Zinc coated(galvanized)(class B)


F. Type and direction of lay
   z     Right lay (strand)
   s     left lay(strand)
   Z     Right lay(rope)
   S     Left lay(rope)
   sZ    Regular lay, right-hand
   zZ    Land lay, right-hand
   sS    Land lay, left-hand
   zS    Regular lay, left-hand




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Advantages of compacted strand wire rope

Advantages of compacted strand wire rope

Product description

As outer strands of the rope go through crimping wheels, the strand becomes thicker – metal cross sectional area increases, strand form becomes smoother, and round, therefore the following advantages are achieved:

increased wear resistance of wires
decreased blocks groove wearing
high tensile strength
higher lateral compression strength
Organic fillers inside the rope serve as additional lubrication source which enables to protect the core from corrosion and reduce friction between rope core and outer strands.

Polymer material between the independent wire rope core and the outer strands protects the core from corrosion and decreases wire wear caused by strand friction on the core

These advantages extend the operational life of the rope and significantly reduce operating costs.

Construction

6хЗ6WS + 6х7 + 1х7
Type 1 - with compacted outer strands
Type 2 - with compacted outer strands and 6 organic fillers between the external and internal layers of the rope
Type 3 - with compacted outer strands and polymeric filling between the independent wire rope core and outer strands

Technical characteristics:

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