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Beloretsk Metallurgical Plant tests new excavator rope

Beloretsk Metallurgical Plant (BMK AO, part of Mechel Group) successfully tested a new type of polymer-coated excavator wire rope. Tests showed that these ropes serve longer than ordinary uncoated ones, have longer operational life and reduce abrasive wear on an excavators barrel and blocks.

The tests were conducted as part of the project on streamlining Beloretsk Metallurgical Plant’s production of multi-strand steel ropes, which is implemented with the support of Russia’s Industry Development Fund and the Republic of Bashkortostan’s government. Beloretsk Metallurgical Plant is due to master production of extra-durable ropes of 8-12 strands up to 90 mm in diameter, including polymer-coated ones. These products will substitute their imported analogues in engineering, mining and oil industries, as well as bridge construction and shipbuilding.

In-situ verification tests at Bashkortostan’s Pugachevsky lime pit demonstrated that a polymer-coated rope worked for a record time period of five months. The tested rope was installed in the hoister of the EKG-5 excavator’s bucket and was used in temperatures ranging from +5 to -38 degrees Celsius. Over 169 days, the excavator equipped with the new rope loaded approximately 267,000 tonnes of lime, which is 37% more than this same excavator used to load when equipped with an uncoated rope that would go out of order far quicker and thus suspend the excavator’s operations.

“Following these tests, we may conclude that polymer-coated ropes have longer operational life and reduce wear on the excavator’s components. This helps reduce downtime,” Pugachevsky Open Pit OOO’s Chief Executive Officer Sergey Yurtaev commented.

“Polymer-coated ropes are currently being tested at Southern Kuzbass Coal Company’s coal pits and in Korshunov Mining Plant’s quarry. It is important to us to find out how the polymer coating will behave in different climatic conditions, aggressive environments and on various equipment, and how efficient the rope as a whole will be. We already see the advantages these ropes have when compared to ordinary ones,” Beloretsk Metallurgical Plant AO’s Chief Executive Officer Viktor Kamelin noted.


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