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2022

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06

Scrapping standards for imported mining steel wire ropes

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【Summary description】When it comes to lifting, steel wire ropes are indispensable because they are essential props for lifting. However, over the years of use, imported mining steel wire ropes are inevitably worn, even damaged, or even scrapped. So, let's learn about the scrapping standards for imported mining steel wire ropes together!

When it comes to lifting, steel wire ropes are indispensable because they are essential props for lifting. However, over the years of use, imported mining steel wire ropes are inevitably worn, even damaged, or even scrapped. So, let's learn about the scrapping standards for imported mining steel wire ropes together!

Scrap standard for imported mining steel wire ropes (1)

Many friends who use imported mining steel wire ropes want to know the specific level of use of steel wire ropes.

There are many structural forms of imported mining steel wire ropes, and the damage phenomenon varies depending on their applicable conditions; In addition, the scrapping standards set by each user unit vary greatly, with some ranging from 1 to 2 months to over 5 years, making it difficult to accurately determine the service life of steel wire ropes. Many countries have conducted extensive research, accumulated experience, and gradually summarized this.

The safety factor and drum diameter of imported mining steel wire ropes, as well as the lifespan of the steel wire ropes, are closely related to the design safety factor and drum diameter of the steel wire ropes, in addition to the service conditions. In the case of the same safety and reliability in the use of steel wire ropes, when the safety coefficient is small, the safety coefficient is correspondingly short and there are more broken wires. On the contrary, the safety coefficient is large, the service life is long, and there are fewer broken wires. As shown in the figure, when the safety coefficient is small, the stress of the safety steel wire rope is high.

Scrap standard for imported mining steel wire ropes (2)

According to the regulations of crane safety management regulations:

1. For steel wire ropes with suspension hooks and rings, the safety factor should generally not be less than 6.

2. The safety factor of the starter wire rope must be less than 5.5. For infrequently used cranes.

3. For manual starters, please usually control it above 4.5.

4. The dedicated lifting rods for cranes and cables used as mast cranes shall not be less than 3.5.

5. The safety factor of steel wire ropes used for carrying elevators is generally not less than 10 According to the Interim Measures for Coal Mine Security formulated by the Ministry of coal industry, the safety factor of steel wire rope for elevator shall not be less than 9.

When selecting pulleys, roller diameter pulleys, and drum diameter, the bending radius of the steel wire rope should be increased to reduce bending stress, but the energy may not be too large to avoid the overall volume of the equipment being too large.

Scrap standard for imported mining steel wire ropes (III)

Imported mining steel wire ropes have collected advanced flaw detection technology from both domestic and international sources, and a portable intelligent electromagnetic non-destructive testing instrument for steel wire ropes has been developed using digital processing and network technology. Widely used in fields such as mines, cableways, lifting equipment, elevators, port machinery, cable bridges, etc. The imported mining steel wire rope detector can display quantitative values of wire breakage, rust, wear, and metal cross-sectional area changes inside and outside the steel wire rope in real-time. Based on current standards and regulations, diagnostic reports and solutions are proposed to achieve rapid diagnosis of steel wire rope damage, shortening the detection time of steel wire rope, making the instrument portable and easy to operate. Operators can undergo simple training and operation, with high detection accuracy and good repeatability, Accurate damage localization.

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