Preparation method of steel rod of rod mill

A rod mill and steel rod technology, applied in the field of wear-resistant materials, can solve problems such as low production efficiency, high production cost, and high labor intensity, and achieve the effects of improving efficiency, low cost, and reducing energy consumption

Active Publication Date: 2014-10-01
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

However, these two processing methods have high labor intensity, high production cost and low production efficiency.

Method used

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  • Preparation method of steel rod of rod mill
  • Preparation method of steel rod of rod mill
  • Preparation method of steel rod of rod mill

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Experimental program
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Effect test

Embodiment 1

[0043] Size: According to the size parameters of the MBS1530 rod mill: cylinder diameter 1500mm, cylinder length 3000mm, it is determined that the rod mill size is 2850mm in length and 105mm in diameter.

[0044] Composition: mass percentage according to C: 0.6-0.85%, Si: 0.17-0.37%, Mn: 0.7-1.2%, P: ≤0.035%, S: ≤0.035%, Cr: ≤0.6%, Nb: 0.01-0.02% Proportion;

[0045] 1) Smelting: In order to ensure the quality requirements, smelting, continuous casting, and hot rolling are carried out by large steel mills. Firstly, the composition is proportioned according to the mass percentage of the chemical composition of the steel rod of the rod mill. Converter-LF furnace technology can be used for molten steel smelting. In this process, the composition ratio must be accurate, and the content of S, P and other impurity elements must be strictly controlled;

[0046] 2) Continuous casting: After the smelting is completed, the continuous casting operation is carried out on the arc-shaped r...

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Abstract

The invention discloses a preparation method of a steel rod of a rod mill, belonging to the field of wear-resistant materials. The steel rod of the rod mill comprises the following components in percentage by mass: 0.6-0.85% of C, 0.17-0.37% of Si, 0.7-1.2% of Mn, less than or equal to 0.035% of P, less than or equal to 0.035% of S, less than or equal to 0.6% of Cr and 0.01-0.02% of Nb. The preparation method of a grinding rod comprises the steps of smelting, continuously casting a round billet, and rolling round steel with the diameter of 50-120mm and the fixed length of 2-7m by using a TMCP (Thermal Mechanical Controlled Process); directly quenching in water for 5-10min by utilizing waste heat after rolling; then, tempering at low temperature. The method can be used for obtaining the grinding rod which has gradient hardness, the surface hardness of HRC60 and the core hardness of HB200 and the steel rod which is high in surface hardness, good in wear resistance, relatively high in core toughness and favorable in matching between hardness and toughness. The method disclosed by the invention is simple in process, high in efficiency, low in energy consumption, low in cost and capable of realizing actual industrial production and application.

Description

technical field [0001] The invention belongs to the field of wear-resistant materials, and relates to a preparation method of a rod mill steel rod, in particular to the production of a rod mill steel rod with a hardness gradient and good matching between hardness and toughness. Background technique [0002] Rod mill steel rod is a kind of wear-resistant material that is professionally used in rod mills. In the rod mill, ore and other materials are finely crushed and ground, and the materials are processed to a suitable particle size for the next production work. prepare. Rod mill steel rods have a wide range of applications, especially in the fields of mine dressing, various building materials, and new dye production, mainly in bauxite, molybdenum-nickel ore, cement plants, thermal power plants, silica sand plants, quartz sand plants, sand Applied in the grinding of non-metallic minerals such as gas plant, aerated concrete, coal water slurry and potassium feldspar, albite f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/26C21D8/06
Inventor 赵爱民胡汉江丁然董瑞曾尚武智超赵复庆周开春丁箫楠武会宾赵征志米振莉
Owner UNIV OF SCI & TECH BEIJING
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