What inspections should be done to the wire rope before lifting operation?

Steel wire rope plays the role of lifting, traction and bearing in hoisting machinery. The steel wire rope produced by modern technology has high strength and is not easy to break. However, due to high frequency and large load, operators must check the steel wire rope before using it to ensure the safety of operation. Let's take a look at the inspection contents and standards of steel wire rope with Editor.

Inspection contents and standards of steel wire rope

1. Check the corrosion

The steel wire rope is made of stainless steel wire or high carbon steel coil. If the quality of the steel wire is poor, if the manufacturer replaces the steel wire with iron wire, it will rust. Therefore, it is necessary to check whether the steel wire rope is rusty every day. If it is found, it should not only stop using, but also report to the production department and the procurement department.

Product recommendation: steel wire rope 14mm

2. Check the wear degree

The steel wire rope will wear and change in diameter during use. The maintainer should often measure the diameter of each section, especially the wear of the easily worn section. If the diameter increases a lot, it should be reported and stopped using if it exceeds 5%.

3. There is no broken wire or wear

If the wire rope is used for a long time, it will be ground. If there is serious wire breakage, it must be stopped immediately. The judgment standard is generally: the wear of outer steel wire shall be less than 40% of its diameter; The length of cross twisted steel wire rope shall not exceed 2 within 6D and 4 within 30d; The length of lay down steel wire rope shall not exceed 1 within 6D. No more than 2 in 30 days. The detailed contents shall be subject to the instructions or national standards.

4. Check the fastening state of both ends

The steel wire rope will be connected to the hook. During inspection, it is necessary to check whether the connection part is fastened and whether the hook is firm.

5. Check the shape of steel wire rope

After the steel wire rope is deformed, there will be twisting, flattening, rope strand extrusion, bending and other conditions. If such conditions are found, further inspection is required, and the unqualified ones shall be scrapped in time. Note: after scrapping, the steel wire rope can no longer be used.

Product recommendation: steel wire rope Φ eighteen

6. Check the lubricating grease on the surface of steel wire rope

The maintenance of steel wire rope is to apply lubricating grease, which plays the role of lubrication, anti-corrosion and anti-wear. When checking the steel wire rope, we must check the grease condition to determine the retention of grease, and there are no debris such as fine debris on the grease.

The above is the knowledge sharing of wire rope inspection contents and standards. The safety of any construction operation is inseparable from the detailed inspection of equipment. All operators must not ignore the inspection of wire rope for the sake of convenience.