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A kind of production method of corrosion-resistant high-strength anchor steel

A production method and anchor steel technology, which is applied in the field of steel materials, can solve the problems that anchor steel does not have corrosion resistance, etc., and achieve the effects of excellent surface quality, corrosion resistance, and fine structure

Active Publication Date: 2017-07-18
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This application provides a production method of corrosion-resistant high-strength anchor steel, which solves the technical problem that the anchor steel in the prior art does not have corrosion resistance

Method used

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  • A kind of production method of corrosion-resistant high-strength anchor steel
  • A kind of production method of corrosion-resistant high-strength anchor steel
  • A kind of production method of corrosion-resistant high-strength anchor steel

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] For the production of Φ18mm steel, the selected chemical components are: C 0.28%, Si 1.57%, Mn0.92%, P0.013%, S0.015%, V0.033%, N0.0087%, Als0.0177 %, Nb 0.017%, Cu0.38%, Cr0.68%, rare earth elements 0.019%, and the balance is Fe and impurities.

[0072] Continuous rolling process parameters: soaking section temperature: 1000°C, heating time 117min, start rolling temperature: 950°C, finish rolling temperature 800°C, free air cooling after going to the cooling bed.

[0073] The following table of steel performance parts

[0074]

Embodiment 2

[0076]For the production of Φ20mm steel, the selected chemical components are: C 0.251%, Si1.31%, Mn1.07%, P0.021%, S0.005%, V0.042%, N0.0099%, Als0. 021%, Nb 0.020%, Cu0.27%, Cr0.73%, rare earth elements 0.025%, and the balance is Fe. Continuous rolling process parameters: soaking section temperature: 1050°C, heating time 120min, no overheating or overburning, starting rolling temperature: 1000°C, final rolling temperature 835°C, free air cooling after going to the cooling bed.

[0077] The following table of steel performance parts

[0078]

Embodiment 3

[0080] For the production of Φ22mm steel, the selected chemical components are: C 0.28%, Si 1.56%, Mn0.87%, P0.011%, S0.018%, V0.047%, N0.0114%, Als0.0273 %, Nb 0.023%, Cu0.47%, Cr0.77%, rare earth elements 0.026%, and the balance is Fe. Continuous rolling process parameters: soaking section temperature: 1100, heating time 105min, starting rolling temperature: 1050°C, final rolling temperature: 880°C, free air cooling after going to the cooling bed.

[0081] The following table of steel performance parts

[0082]

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Abstract

The invention discloses a method for producing corrosion-resistant high-strength anchor steel. The mass percentage of the anchor steel includes: C: 0.25-0.30%, Si: 1.3-1.6%, Mn: 0.8-1.2%, P≦ 0.035%, S≦0.025%, V: 0.03~0.05%, N: 0.008~0.012%, Als: 0.01~0.03%, Nb: 0.01~0.025%, Cu: 0.25~0.5%, Cr: 0.6~0.8%, Rare earth elements: 0.01-0.03%, the rest are Fe and impurity elements. In the above-mentioned anchor rod steel, vanadium, niobium and nitrogen are used to form precipitates of vanadium and niobium to strengthen the matrix, which can improve the strength of the steel, reduce the amount of alloy added, and reduce the cost of the alloy. At the same time, the addition of Al can eliminate excessive nitrogen harm, improve the impact energy, and refine the grains; the large deformation of the slab combined with low-temperature rolling is beneficial to improve the solid solution strengthening and precipitation strengthening effects of V and the refined grain strengthening of Nb, and obtain good comprehensive properties , Moreover, the addition of Cu, rare earth elements and Cr can improve the corrosion resistance of steel, thereby improving the corrosion resistance of steel.

Description

technical field [0001] The invention relates to the technical field of steel materials, in particular to a production method of corrosion-resistant high-strength anchor steel. Background technique [0002] Anchor rods are rod-shaped objects anchored in coal and rock bodies to maintain the stability of surrounding rocks. Bolt support is the preferred and high-safety main support method for coal mine roadways. Compared with other supports, it is an active support form, which has the advantages of simple support process, good support effect, low material consumption and low support cost. It has the advantages of low maintenance cost, convenient transportation and construction. With the rapid development of the national coal industry and the continuous expansion of mining scale, coal safety production has become one of the outstanding issues restricting the development of coal mines in my country. The coal industry is eagerly looking forward to higher strength mine support bolt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/26
Inventor 徐志东徐志李媛吴杰范植金张帆王瑞敏周新龙
Owner 武汉钢铁有限公司