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High-boron high-speed steel composite roller and manufacturing method thereof

A high-speed steel, high-boron technology, applied in the direction of rolls, metal rolling, manufacturing tools, etc., can solve the problems of high brittleness and poor use safety, and achieve high production efficiency, less processing, and good wear resistance.

Active Publication Date: 2014-06-18
娄底市巨能高新耐磨材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned high-boron high-speed steel rolls generally have large brittleness and poor safety in use.

Method used

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  • High-boron high-speed steel composite roller and manufacturing method thereof
  • High-boron high-speed steel composite roller and manufacturing method thereof
  • High-boron high-speed steel composite roller and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The high-boron high-speed steel compound roll is combined by the roller shaft 7 and the high-boron high-speed steel compound roll sleeve through hot fitting. The roll body size of the combined roll is The high-boron high-speed steel combination roll and its preparation method are as follows:

[0028] ① Melt the outer wear-resistant high-boron high-speed steel molten steel of the high-boron high-speed steel composite roller sleeve in a 500-kg medium-frequency induction furnace first. The chemical composition and mass fraction of the high-boron high-speed steel molten steel are: 1.25%C, 1.59%B, 5.53%Cr, 1.47%W, 2.56%Mo, 0.35%V, 1.19%Ni, 0.33%Si, 0.54%Mn, 0.036%S, 0.040%P, the balance is Fe and unavoidable impurities.

[0029] ②When the temperature of the above-mentioned high-boron high-speed steel molten steel reaches 1581°C, the molten steel is discharged into the ladle, and then the diameter is added to the ladle. The alloy wire, the chemical composition and mass fr...

Embodiment 2

[0033] The high-boron high-speed steel compound roll is combined by the roller shaft 7 and the high-boron high-speed steel compound roll sleeve through hot fitting. The roll body size of the combined roll is The high-boron high-speed steel combination roll and its preparation method are as follows:

[0034] ① Melt the outer wear-resistant high-boron high-speed steel molten steel of the high-boron high-speed steel composite roller sleeve in a 500-kg medium-frequency induction furnace first. The chemical composition and mass fraction of the high-boron high-speed steel molten steel are: 1.78%C, 1.25%B, 7.94%Cr, 1.02%W, 3.00%Mo, 0.58%V, 0.65%Ni, 0.87%Si, 0.32%Mn, 0.037%S, 0.043%P, the balance is Fe and unavoidable impurities.

[0035] ②When the temperature of the above-mentioned high-boron high-speed steel molten steel reaches 1598°C, the molten steel is discharged into the ladle, and then the diameter is added into the ladle. The alloy wire, the chemical composition and mass ...

Embodiment 3

[0039] The high-boron high-speed steel compound roll is combined by the roller shaft 7 and the high-boron high-speed steel compound roll sleeve through hot fitting. The roll body size of the combined roll is The high-boron high-speed steel combination roll and its preparation method are as follows:

[0040] ① Melt the outer wear-resistant high-boron high-speed steel molten steel of the high-boron high-speed steel composite roller sleeve in a 500-kg medium-frequency induction furnace first. The chemical composition and mass fraction of the high-boron high-speed steel molten steel are: 1.55%C, 1.39%B, 6.70%Cr, 1.38%W, 2.66%Mo, 0.40%V, 0.91%Ni, 0.68%Si, 0.43%Mn, 0.035%S, 0.039%P, the balance is Fe and unavoidable impurities.

[0041] ②When the temperature of the above-mentioned high-boron high-speed steel molten steel reaches 1593°C, the molten steel is discharged into the ladle, and then the diameter is added to the ladle. The alloy wire, the chemical composition and mass fr...

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Abstract

The invention discloses a high-boron high-speed steel composite roller and a manufacturing method thereof, belonging to the technical field of rollers. A roller shaft and a high-boron high-speed steel composite roller sleeve are combined together through hot charging; the outer layer of the composite roller sleeve is wear-resistant high-boron high-speed steel, and the inner layer is a steel pipe; the roller shaft is arranged in the steel pipe and coaxially penetrates through the steel pipe; the molten steel of the wear-resistant high-boron high-speed steel at the outer layer comprises the following chemical components in percentage by mass: 1.25-1.80% of C, 1.25-1.60% of B, 5.5-8.0% of Cr, 1.0-1.5% of W, 2.5-3.0% of Mo, 0.3-0.6% of V, 0.6-1.2% of Ni, 0.3-0.9% of Si, 0.30-0.55% of Mn, less than 0.04% of S, less than 0.05% of P and the balance of Fe and unavoidable impurities; the molten steel is prepared by casting and combination with the steel pipe after treatment outside the furnace. The composite roller disclosed by the invention has the advantages of high hardness, good wear resistance and low production cost, and brings good benefits in application.

Description

technical field [0001] The invention discloses a roll and a manufacturing method thereof, in particular to a high-boron high-speed steel composite roll and a manufacturing method thereof, and belongs to the technical field of rolls. Background technique [0002] The roll is a common consumable part in steel rolling production. The quality of the roll is directly related to the production efficiency of the rolling mill, the surface quality of the rolled material and the production cost of the rolled steel. Improving the quality of the roll has attracted the attention of the metallurgical and steel rolling industry. In order to improve the quality of rolls, Chinese invention patent CN102330037A discloses an alloy roll with wear resistance and high heat resistance. The various components contained in it are calculated by weight percentage: C: 2.5% ~ 3.5%; Si: < 2.0%; Mn: 1.6%~2.0%; P: ≤0.06%; S: ≤0.05%; Cu: ≤0.2%; As: ≤0.10%; Cr: 1.5%~2.0%; Ni: 10.0%~20.0% ; Mo: 10.5% to 15...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/56C22C38/54B22D19/00C22C38/04B21B27/03
Inventor 颜建文
Owner 娄底市巨能高新耐磨材料有限公司
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