NPR anchor cable material and production method thereof

A production method and anchor cable technology, which is applied in the installation of anchor rods, earthwork drilling, mining equipment, etc., can solve the problems of not being able to adapt to the instantaneous large deformation of the surrounding rock, and losing the load-bearing protection capacity.

Inactive Publication Date: 2020-10-13
何满潮 +2
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  • Abstract
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Problems solved by technology

[0005] An NPR anchor cable material and its production method are provided in the embodiment of the present invention to solve the problem that the anchor cable material in the prior art cannot adapt to the instantaneous large deformation of the surrounding rock under the impact force, and it can reach its peak value instantly under the impact load. The problem of losing the load-bearing protection capacity due to the yield strength

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  • NPR anchor cable material and production method thereof
  • NPR anchor cable material and production method thereof
  • NPR anchor cable material and production method thereof

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0031] see figure 1 with figure 2 As shown, according to an embodiment of the present invention, a kind of NPR anchor cable material is provided, and it is characterized in that the component and weight percentage content of described NPR anchor cable material are:

[0032] C: 0.4~0.8%, Mn: 15~22%, Al: 1-5%, NPR crystal: 0~1%, Ni: 0~0.3%, Si: 0~0.3%, S: 0~0.001%, P: 0 to 0.001%, and the balance is Fe and unavoidable impurity elements.

[0033] The main application field of the NPR anchor cable material of the present application is oriented to the prestressed anchor cable field. In the actual service process, the material will exert a large prestress, and high-strength steel materials (strength greater than 1000MPa) need special special forces in high prestress service. Pay attenti...

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Abstract

The invention discloses an NPR anchor cable material and a production method thereof. The components of the NPR anchor cable material include, by weight, 0.4-0.8% of C, 15-22% of Mn, 1-5% of Al, 0-1%of NPR crystals, 0-0.3% of Ni, 0-0.3% of Si, 0-0.001% of S, 0-0.001% of P and the balance Fe and inevitable impurity elements. The NPR anchor cable material and the production method thereof can effectively solve the problems that an anchor cable material in the prior art cannot adapt to instant large deformation of surrounding rock under the action of impact force, and the carrying protection capability is lost as the yield strength of the anchor cable material is instantly reached under the action of an impact load.

Description

technical field [0001] The invention relates to the technical field of mining equipment materials, in particular to an NPR anchor cable material and a production method thereof. Background technique [0002] Rockburst is a special form of mine pressure, and it is a dynamic phenomenon characterized by sudden, sharp and violent damage caused by the accumulation of deformation energy of the surrounding coal and rock mass during the mining process and the release of the coal and rock mass limit. , is one of the major disasters in coal mines. my country is one of the most serious coal mine rock burst hazards in the world except Germany and Poland. According to statistics from the China Coal Industry Association, since the founding of the People's Republic of my country, more than 4,000 rockburst accidents have occurred in China, causing heavy losses. With the continuous increase of coal mining depth, especially in the main coal mining area in eastern my country, the number of m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/02C22C38/06C22C38/08C21C7/06C21C7/064C21D8/06C21D1/26B21C37/04E21D21/00
CPCB21C37/04C21C7/06C21C7/064C21D1/26C21D8/065C22C38/02C22C38/04C22C38/06C22C38/08E21D21/006
Inventor 何满潮夏敏王琦郭洪燕江贝
Owner 何满潮
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