Potential safety hazard of wire rope

Release time:

2022-07-04

In the later period, if there is a demand for products and services such as wire rope nondestructive testing, wire rope nondestructive testing, wire rope nondestructive testing instrument, wire rope nondestructive testing instrument, etc., you can contact Luoyang Baikte Technology Development Co., Ltd. at any time.

Potential safety hazard of wire rope

Today, the staff of Luoyang Baikte Technology Development Co., Ltd. explained the potential safety hazard of the wire rope. It is well known that wire ropes are in contact with other objects during operation and have relative motion to generate friction. Under mechanical, physical and chemical action, the surface of the steel wire is constantly worn. Wear is a very common way of damage in the use of steel wire rope, which is generally divided into external wear, deformation wear and internal wear.

External wear: The wear caused by the contact between the outer surface of the wire rope and the surface of the wheel groove, drum, ground and other objects is external wear. The external wear is divided into two types: single-sided wear and overall wear. After the external wear, the rope diameter will become thinner, and the steel wire on the outer surface will be worn.

Improvement measures: when the wire rope is used for a certain time, the method of turning around and cutting the rope can be adopted to change the wear position, so as to prolong the service life of the wire rope.

Deformation wear: due to vibration, collision caused by the wire rope surface damage, called deformation wear, which is a local wear phenomenon. If the wire rope on the surface of the drum is impacted by other objects, the wire rope strikes each other during lifting or the biting rope phenomenon caused by the deflection of the pulley and the drum center will cause the wire rope to deform and wear.

If the worn surface steel wire is cut, the cross section of the steel wire extends to both sides at the extrusion site into a wing shape. From the outside, the width of the steel wire is expanded. Although the cross-sectional area of the steel wire rope is not much reduced, the surface material of the steel wire at the local extrusion is hardened, which is very easy to cause the wire rope to break.

Improvement measures: reduce the collision of wire rope, often check and adjust the abnormal operation of wire rope and equipment, and repair it in time.

Internal wear: during use, all the load borne by the wire rope when passing through the drum or pulley is pressed on one side of the wire rope, and the radius of curvature of each steel wire cannot be exactly the same. due to the bending of the wire rope, each fine steel wire inside the wire rope will exert mutual force and slip. at this time, the contact stress between strands increases, causing local indentation or depression of the steel wires between adjacent strands. When repeated cyclic stretching and bending, stress concentration is generated in the depression and it is broken, which constitutes internal wear.

Improvement measures: select high-quality wire rope grease used in the working environment, and select wire rope products with line contact, special-shaped strands, surface contact, plastic coating and other structural wire rope products suitable for special working environment.

These are all the contents shared by the Baikete staff, if any in the later period.Non-destructive testing of steel wire ropeFor product and service requirements such as wire rope nondestructive testing, wire rope nondestructive testing instrument, wire rope nondestructive testing instrument, etc., you can contact Luoyang Baike Technology Development Co., Ltd. at any time.