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High-speed steel roller containing boron aluminum

A high-speed steel and aluminum-boron technology, which is applied in the field of aluminum-boron high-speed steel rolls and high-speed steel rolls, can solve the problems of large amount of precious alloys and high production costs of rolls, and achieve excellent oxidation resistance, roll cost reduction, and excellent anti-oxidation properties. The effect of high temperature tempering softening ability

Active Publication Date: 2017-07-07
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned high-speed steel rolls generally have the disadvantages that the addition of precious alloys is large and the production cost of the rolls is high.

Method used

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  • High-speed steel roller containing boron aluminum

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] An aluminum-boron-containing high-speed steel roll is characterized in that it is smelted in an electric furnace, and the specific preparation process steps are:

[0019] 1) Melt aluminum-boron high-speed steel in a 500 kg medium-frequency induction furnace first. The chemical composition and mass fraction of the aluminum-boron high-speed steel molten steel are 1.67C, 1.36B, 1.05Al, 5.37Cr, 2.17Mo, 0.99Si, 0.67Mn, 1.36V, 0.019S, 0.028P, the balance Fe, when the temperature of the molten steel reaches 1623°C, the molten steel is taken out of the furnace into the ladle, and the bottom of the ladle is pre-added with an amorphous and nanocrystalline modifier with a thickness of 0.18mm. The chemical composition and mass fraction of the modifier is 21.60% B, 1.23% Rb, 21.69% Al, 3.66% Ti, 1.08% C, 5.21% Ca, the balance is Fe and inevitable impurity elements, amorphous and nanocrystalline modification The amount of additive added accounts for 0.63% of the mass fraction of the ...

Embodiment 2

[0022] An aluminum-boron-containing high-speed steel roll is characterized in that it is smelted in an electric furnace, and the specific preparation process steps are:

[0023] 1) Melt aluminum-boron high-speed steel in a 1000 kg medium-frequency induction furnace first. The chemical composition and mass fraction of aluminum-boron high-speed steel molten steel are 1.92C, 1.13B, 1.28Al, 5.04Cr, 2.55Mo, 0.78Si, 0.94Mn, 1.14V, 0.025S, 0.026P, the balance Fe, when the temperature of the molten steel reaches 1648°C, the molten steel is taken out of the furnace into the ladle, and the bottom of the ladle is pre-added with an amorphous and nanocrystalline modifier with a thickness of 0.69mm. The chemical composition and mass fraction of the modifier is 20.34% B, 1.44% Rb, 21.47% Al, 4.01% Ti, 0.91% C, 5.56% Ca, the balance is Fe and inevitable impurity elements, amorphous and nanocrystalline modification The amount of additive added accounts for 0.87% of the mass fraction of the mol...

Embodiment 3

[0026] An aluminum-boron-containing high-speed steel roll is characterized in that it is smelted in an electric furnace, and the specific preparation process steps are:

[0027] 1) Melt aluminum-boron high-speed steel in a 750 kg medium-frequency induction furnace first. The chemical composition and mass fraction of the aluminum-boron high-speed steel molten steel are 1.82C, 1.19B, 1.20Al, 5.25Cr, 2.46Mo, 0.90Si, 0.85Mn, 1.27V, 0.022S, 0.031P, the balance Fe, when the temperature of the molten steel reaches 1641°C, the molten steel is taken out of the furnace into the ladle, and the bottom of the ladle is pre-added with an amorphous and nanocrystalline modifier with a thickness of 0.54mm. The chemical composition and mass fraction of the modifier is 20.99% B, 1.28% Rb, 21.53% Al, 3.84% Ti, 0.97% C, 5.41% Ca, the balance is Fe and inevitable impurity elements, amorphous and nanocrystalline modification The amount of additive added accounts for 0.75% of the mass fraction of the ...

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Abstract

The invention discloses a high-speed steel roller containing boron aluminum, and belongs to the technical field of metallic materials. Electric-furnace smelting is adopted. Molten steel of high-speed steel containing boron aluminum comprises, by mass, 1.67%-1.92% of C, 1.13%-1.36% of B, 1.05%-1.28% of Al, 5.04%-5.37% of Cr, 2.17%-2.55% of Mo, 0.78%-0.99% of Si, 0.67%-0.94% of Mn, 1.14%-1.36% of V, 0-0.030% of S (not including 0.030%), 0-0.032% of P (not including 0.032%) and the balance Fe. When the temperature of the molten steel reaches 1623-1648 DEG C, the molten steel is discharged into a steel ladle, and an amorphous nanocrystalline modificator is added into the bottom of the steel ladle in advance. When the temperature of the molten steel is lowered to 1483-1526 DEG C, the molten steel is poured into a casting mold, and accordingly a high-speed steel roller blank containing boron aluminum is obtained. After machining and heat treatment are completed, the roller has excellent usability.

Description

technical field [0001] The invention discloses a high-speed steel roll, in particular to an aluminum-boron high-speed steel roll, which belongs to the technical field of metal materials. Background technique [0002] The development and application of high-speed steel rolls is a great change in the history of roll manufacturing technology. Compared with traditional roll materials, high-speed steel rolls have the characteristics of high hardness, good hardenability and good wear resistance. In order to improve high-speed steel rolls Chinese invention patent CN 106435370 discloses a special high-speed steel roll for cold-rolling high-strength automobile sheets. Its chemical composition and weight percentage are as follows: carbon 0.80-0.90%; silicon 0.20-0.45%; ~3.70%; Molybdenum 4.25~4.40%; Vanadium 1.50~1.70%; Tungsten 5.30~5.45%; Phosphorus≤0.030%; Sulfur≤0.030%; The manufacturing method of the special high-speed steel roll for cold-rolled high-strength automobile plate in...

Claims

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Application Information

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IPC IPC(8): C22C38/34C22C38/32C22C38/06C22C38/22C22C38/02C22C38/04C22C38/24B22D1/00B22C9/24C21D9/38
CPCB22C9/24C21D9/38C22C38/002C22C38/02C22C38/04C22C38/06C22C38/22C22C38/24C22C38/32C22C38/34C22C2200/02C22C2200/04
Inventor 符寒光李荟林健符定梅雷永平汪长安
Owner BEIJING UNIV OF TECH
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