NEWS Center

15

2022

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06

Precautions for inspection of imported mining steel wire ropes

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【Summary description】For a long time, imported mining steel wire ropes have been manually inspected and regularly replaced to avoid wire rope breakage and prevent accidents. However, the reliability and efficiency of the manual inspection method are low. So let's take a look at the inspection precautions for imported mining steel wire ropes together!

Imported mining steel wire ropes play an important role in the lifting and transportation of mines, mainly used for hanging objects to transmit power. Due to working environments such as wear, compression, bending, and moisture corrosion, they are very prone to damage and fracture, leading to accidents. For a long time, imported mining steel wire ropes have been manually inspected and regularly replaced to avoid wire rope breakage and prevent accidents. However, the reliability and efficiency of the manual inspection method are low. So let's take a look at the inspection precautions for imported mining steel wire ropes together!

Precautions for inspection of imported mining steel wire ropes (1)

According to statistics, 37% of salvage accidents are caused by wire rope breakage, which has a significant negative impact on the country and society, and regular replacement can cause huge waste. For every 100000 tons of coal lifted underground, an average of about 5 tons of steel wire ropes are required. However, more than 70% of the replaced steel wire ropes can continue to be used, resulting in significant economic waste. Therefore, a reliable tension and flaw detection system for mining steel wire ropes has become an urgent task.

What are the precautions for inspecting imported mining steel wire ropes? Firstly, locomotive mechanical and electrical maintenance personnel conduct a comprehensive inspection of the steel wire rope before using the winch for transportation. For example, steel wire ropes and single pipe tons must be released for inspection. When the leaves grow to 150 meters, check one point every 50 meters. In the following inspection, stagger by 30 meters and set points for inspection. When the total length of the leaves is within 150 meters, check one point for each 20 meters.

Precautions for inspection of imported mining steel wire ropes (2)

Newly invested steel wire ropes must be inspected the next day, mainly for the detection methods of rope ends and rope elongation. Measuring the diameter of a steel wire rope with a vernier caliper must be based on the small diameter of the measuring point. If the wear of the wire rope diameter does not exceed 10%, it is allowed to reduce the number of tractors and continue to use them. When the surface wear of steel thrown exceeds 10% of the steel wire rope, it should be replaced immediately. For example, when the outer diameter is 12.5mm for 11.25, 15mm for 13.5, 21.5mm for 19.35, and 24.5mm for 22.5, it needs to be replaced immediately.

Precautions for Inspection of Imported Mining Steel Wire Ropes (III)

Visual observation shows that imported mining steel wire ropes are not used for a long time, and corrosion pits may appear on the surface of the steel wire rope due to water and chemical corrosion under natural conditions. When the entire outer surface of the steel wire rope is corroded, forming pits that are clearly visible to the naked eye, the steel wire rope cannot be used again. The steel wire rope must be immediately replaced with a new one and inspected after 10 months of use. Cut the wire rope core and inspect the internal wear of the wire rope 30 meters before the wellhead. Do not reuse wire ropes used in special environments, such as watering or excessive wear and overload of wire ropes. The on-site judgment of overload is based on visual observation. When the appearance of the steel wire rope is severely deformed, the structure is damaged, the steel core is squeezed or significantly curled, it should be replaced in a timely manner.

Precautions for inspection of imported mining steel wire ropes (4)

There are many drawbacks to manually detecting imported mining steel wire ropes, and imported mining steel wire ropes play an important role in the lifting and transportation of mines. Mainly used for hanging objects to transmit power, in working environments such as wear, compression, bending, damp corrosion, etc., it is very prone to damage and fracture, leading to accidents. Traditionally, mining wire ropes use manual visual inspection and regular replacement methods to avoid wire rope breakage and prevent accidents. However, the manual visual inspection method has low reliability and efficiency. According to statistics, 37% of salvage accidents are caused by wire rope breakage, which has a significant negative impact on the country and society, and regular replacement can cause huge waste. To lift 100000 tons of coal underground, an average of about 5 tons of steel wire ropes are required. However, over 70% of the replaced steel wire ropes can continue to be used, resulting in significant economic waste. Therefore, a reliable imported tension and flaw detection system for mining steel wire ropes has become a top priority.

The above is the precautions for inspecting imported mining steel wire ropes. If you need to learn more, please feel free to contact us at any time!