Qingdao Haosail Machinery Co., Ltd.

A: "WS" stands for Warrington-Seale, which is a mixed arrangement of steel wires in the strand: of the 36 steel wires in each strand, the inner layer is Warrington (alternating thick and thin steel wires to improve flexibility), and the outer layer is Seale (all thick steel wires to enhance wear resistance).

The core difference from ordinary 6×36 (such as filled type) lies in the performance focus: ordinary 6×36 relies more on thin filling wires to fill the gaps, and has low wear resistance and breaking tension; while 6×36WS uses all thick steel wires in the outer layer to improve load-bearing and wear resistance, while retaining the flexibility of the inner layer, and has better overall performance.

A: Not suitable. Although its 36-wire structure is more flexible than the 6×19 series, the outer layer of thick steel wire still has a certain rigidity. If the pulley diameter is too small (<15 times the rope diameter), the outer steel wire is prone to early fatigue fracture due to stress concentration when bending, shortening the service life.

A: Choose fiber core (FC): It is used in scenes without high temperature, medium load (<30 tons) and frequent bending, such as workshop bridge cranes and small elevator traction. It is light in weight and has low bending resistance. The fiber core can store more grease and reduce maintenance frequency.

Choose steel core (IWRC): It is used in high temperature environments (such as furnace hoisting), heavy loads (30-50 tons) or scenes with impact loads (such as mine hoisting). The steel core can increase the breaking force by 20%-30%, and has stronger resistance to extrusion deformation.

A: It needs to be judged in combination with the "number of broken wires within the lay length" and the "broken wire position":

Fiber core (FC): within a lay length (about 6-8 times the rope diameter length), if the total number of broken wires exceeds 22 (or the outer layer single strand has more than 4 broken wires), it needs to be scrapped;

Steel core (IWRC): within a lay length, if the total number of broken wires exceeds 26 (or the outer layer single strand has more than 5 broken wires), it needs to be scrapped;

If the broken wires are concentrated in a certain area (such as more than 10 broken wires within 300mm), even if the total number does not exceed the standard, it is recommended to replace it in advance (there is a risk of stress concentration).

A: "Loose strands" are mostly caused by improper installation or use. Preventive measures include:

Avoid twisting of the wire rope during installation (keep it hanging naturally when releasing it, do not force it to be dragged);

Ensure that the rope is neatly arranged when the drum is reeling in the rope to avoid the bottom layer being squeezed and deformed by the upper layer when multiple layers are wound;

If used for traction, ensure that the force axes of the connection points at both ends are consistent to prevent uneven loading from causing the strand twist length to increase.