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Steel for wear-resistant steel bar, wear-resistant steel bar and preparation method thereof

A technology of wear-resistant steel and round steel, which is applied in the field of wear-resistant steel bars, can solve the problems of low tensile strength, low overall hardness, and low grinding efficiency, and achieve the effect of meeting the cost requirements and high strength

Inactive Publication Date: 2017-12-15
侯宇岷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because of its low overall hardness (HB180-200), low tensile strength, etc., and the use of large wear (large consumption of steel rods), bending, out of round, winding, tapering at both ends, and low grinding efficiency have seriously affected the Productivity of rod mills

Method used

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  • Steel for wear-resistant steel bar, wear-resistant steel bar and preparation method thereof

Examples

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preparation example Construction

[0030] The application provides a method for preparing the above-mentioned wear-resistant steel rod, comprising the following steps:

[0031]1) Prepare round steel: obtain round steel by steelmaking, continuous casting and continuous rolling, and the round steel includes the following components in weight percentage: 0.55%~0.65% of C; 0.2%~0.4% of Si; 0.60%~ 1.0% Mn; 0.9%~1.3% Cr; 0.15%~0.25% Mo; 0.1%~0.2% V; 0.01%~0.05% Ti; S≤0.020%; P≤0.020%; the rest is Fe and unavoidable impurities;

[0032] 2) sizing: the round steel obtained in step 1) is sizing according to the technical requirements of the rod mill to obtain a wear-resistant steel bar semi-finished product;

[0033] 3) Quenching: Heat the wear-resistant steel bar semi-finished product obtained in step 2) to 820°C-860°C in an intermediate frequency induction furnace, and then perform water quenching treatment, and the water quenching time is 5min-15min;

[0034] 4) Tempering: Temper the wear-resistant steel bar semi-f...

Embodiment 1

[0039] Taking a method for preparing a wear-resistant steel rod for a Φ100mm rod mill as an example, it includes the following steps:

[0040] 1) prepare round steel: obtain round steel by steelmaking, continuous casting and continuous rolling, and described round steel comprises the component of following percentage by weight: 0.59% C; 0.24% Si; 0.80% Mn; 1.1% Cr ; 0.19% Mo; 0.15% V; 0.03% Ti; 0.008% S; 0.012% P; the rest is Fe and unavoidable impurities;

[0041] 2) sizing: the round steel obtained in step 1) is sizing according to the technical requirements of the rod mill to obtain a wear-resistant steel bar semi-finished product;

[0042] 3) Quenching: Heat the wear-resistant steel rod semi-finished product obtained in step 2) to 840°C in an intermediate frequency induction furnace, and then perform water quenching treatment, and the water quenching time is 10 minutes;

[0043] 4) Tempering: Tempering the semi-finished wear-resistant steel bar obtained after water quench...

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Abstract

The invention discloses steel for a wear-resistant steel bar. The steel comprises the following components in percentages by weight: 0.55-0.65% of C, 0.2-0.4% of Si, 0.60-1.0% of Mn, 0.9-1.3% of Cr, 0.15-0.25% of Mo, 0.1-0.2% of V, 0.01-0.05% of Ti, less than or equal to 0.020% of S, less than or equal to 0.020% of P and the balance of Fe and inevitable impurities. According to the steel, the wear-resistant steel bar has relatively high strength, hardness, toughness and wear resistance in a rod mill using field, and hardness, hardenability, strength and toughness are substantially balanced and considered. The invention also provides the wear-resistant steel bar made from the steel for the wear-resistant steel bar, and a preparation method of the wear-resistant steel bar.

Description

technical field [0001] The invention relates to the technical field of wear-resistant steel rods, in particular to a steel for wear-resistant steel rods, a wear-resistant steel rod and a preparation method thereof. Background technique [0002] With its advantages of energy saving, high efficiency, easy adjustment, uniform crushing, no grinding, etc., the rod mill is widely used in coal water slurry, phosphate rock, quartz sand, potassium albite feldspar, bauxite, etc. in industries such as coal chemical industry, metallurgy, and building materials. powder preparation. Wear-resistant steel rod refers to the grinding medium rod used in various rod mills, which is the main consumable part for powder preparation. It needs to have high hardness, toughness and strength, etc., so that it has a high Wear resistance, no bending and winding and low rod breaking rate make the rod mill have high grinding efficiency and good grinding quality. [0003] At present, the materials of wear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/22C22C38/24C22C38/28B21C37/04C21D8/06
CPCC22C38/02B21C37/04C21D8/065C22C38/04C22C38/22C22C38/24C22C38/28
Inventor 侯宇岷
Owner 侯宇岷
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