High-carbon high-high-vanadium high-speed steel composite roller and heat treatment method thereof

A technology of composite roll and high-speed steel, applied in the field of high-carbon high-vanadium high-speed steel roll and its heat treatment, can solve the problems of high energy consumption, complex process, low efficiency, etc., and achieve simple production process, good wear resistance, good resistance abrasive effect

Inactive Publication Date: 2007-09-19
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
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  • High-carbon high-high-vanadium high-speed steel composite roller and heat treatment method thereof

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Embodiment 1

[0038] The high-carbon high-vanadium high-speed steel roll prepared in this embodiment is produced in an intermediate frequency induction furnace with a capacity of 500 kilograms, and its manufacturing process steps are:

[0039] ①Mix ordinary steel scrap, pig iron, ferrochrome, ferrotungsten, ferromolybdenum, ferroniobium and metal cobalt according to the chemical composition requirements, put them into the furnace to heat and melt, add ferromanganese after the molten steel is melted, and add ferrovanadium before leaving the furnace;

[0040] ② After adjusting the composition before the furnace, the temperature is raised to 1580°C, and 0.16% of Al and 0.08% of Si-Ca alloy by weight are added to the molten steel for composite deoxidation and then released from the furnace;

[0041] ③Crush yttrium-based magnesium rare earth, ferro-titanium, ferro-zirconium, and ferro-tellurium into small pieces with a particle size of less than 12mm, and after drying below 220°C, place them at t...

Embodiment 2

[0049] The high-carbon high-vanadium high-speed steel roll of the present embodiment is produced in an intermediate frequency induction furnace with a capacity of 750 kilograms, and its manufacturing process steps are:

[0050] ①Mix ordinary steel scrap, recarburizer, ferrochrome, ferrotungsten, ferromolybdenum, ferroniobium and metal cobalt into the furnace for heating and melting according to chemical composition requirements, add ferromanganese after molten steel is melted, and add ferrovanadium before leaving the furnace;

[0051] ② After adjusting the composition before the furnace, the temperature is raised to 1593°C, and 0.18% of Al and 0.12% of Si-Ca alloy by weight are added to the molten steel for composite deoxidation and then released from the furnace;

[0052] ③Crush yttrium-based magnesium rare earth, ferro-titanium, ferro-zirconium, and ferro-tellurium into small pieces with a particle size of less than 12mm, and after drying below 220°C, place them at the bottom...

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Abstract

The invention discloses a high-carbon high-vanadium high-speed-steel complex roll. The outer layer of the high-carbon high-vanadium high-speed-steel complex roll comprises, based on weight percent, C: 1.8%-3.0%, V: 3.0%-6.0%, Cr: 4.0%-6.0%, Mo: 3.0%-6.0%, W: 1.0%-3.0%, Nb: 1.0%-5.0%, Co: 1.0%-5.0%, Si: <1.0%, Mn: <1.5%, P: <0.04%, S: <0.04%; Y: 0.05%-0.20%, Ti: 08%-0.25%, Mg: 0.03%-0.12%, Zr: 0.04%-0.18%, Te: 0.02%-0.12%, the residuel of Fe, the total of 100%. The roll is produced by smelting using electric furnace, casting and forming using centrifugal casting, heat treatment comprising quenching and tempering treatment. The high-speed-steel roll has high rigidity and strength, good toughness and wear resistance, and good anti-thermal fatigue, without roll breakage and desquamation in use. The application of the inventive roll can reduce the consumption of roll, improve the work rates of roll, prolong roll changing cycle, improve the surface quality of roll, with good economic and social effect.

Description

technical field [0001] The invention belongs to the technical field of metal rolling, and relates to a roll and a treatment method thereof, in particular to a high-carbon, high-vanadium high-speed steel roll and a heat treatment method thereof. Background technique [0002] Rolls are one of the main spare parts consumed in steel rolling production, and the consumption of rolls is about 5% to 15% of the production cost of steel rolling. If factors such as production downtime, reduced production and increased equipment maintenance due to roll consumption are considered, the proportion of production costs will be even higher. The quality of the roll is not only related to the cost of rolling steel production and the production rate of the rolling mill, but also affects the quality of the rolled material to a large extent. With the development of steel rolling technology, the speed and automation of rolling mills have been continuously improved, and high...

Claims

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Application Information

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IPC IPC(8): C22C38/36C22C33/04C21C7/00C21C7/06B22D13/02B22D27/04B22D19/16C21D9/38C21D1/18C21D11/00
Inventor 符寒光邢建东高义民李明伟张轶蒋志强皇志富
Owner XI AN JIAOTONG UNIV
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