High-tungsten-vanadium high-speed steel wear-resistant roller and manufacturing method thereof

A high-speed steel and roll technology, applied in the direction of rolls, metal rolling, manufacturing tools, etc., can solve the problems of increased deformation resistance of rolled materials, decreased surface temperature of rolled materials, and decreased life of rolls, etc., to achieve increased deformation resistance and hardness. Good uniformity and the effect of improving the operation rate of the rolling mill

Active Publication Date: 2019-07-12
安徽环渤湾高速钢轧辊有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] But the various wear-resistant rolls that have been disclosed at present generally have the deficiencies of low hardness and poor wear resistance. The various high-speed steel rolls that have been successfully developed have achieved good results in use on strip hot rolling mills despite their high hardness. However, when it is used to roll high-strength low-alloy hot-rolled rebar, since the rolled material needs to be cooled by spraying water before entering the finished product frame, the surface temperature of the rolled material will drop, and the strength will increase, thereby significantly increasing the deformation resistance of the rolled material. , resulting in a sharp drop in roll life

Method used

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  • High-tungsten-vanadium high-speed steel wear-resistant roller and manufacturing method thereof

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Effect test

Embodiment 1

[0025] A high-tungsten-vanadium high-speed steel wear-resistant roll and a manufacturing method thereof. The outer layer (1) high-speed steel molten steel and the roll core (2) molten iron are respectively smelted in an electric furnace. The specific preparation process steps are as follows:

[0026] ① Melt the high-speed steel on the outer layer of the roll (1) in a 1000 kg medium frequency induction furnace first, and control the chemical composition and mass fraction of the molten steel in the furnace at 10.48%W, 1.86%Mo, 2.88%C, 0.028%P, 0.021 %S, 6.33% Cr, 2.38% Nb, 2.29% Si, 0.67% Mn, the balance is Fe and other unavoidable impurities; then the molten steel is heated to 1667°C, and after holding for 3.5 minutes, metal aluminum is added into the furnace. The amount of metal aluminum added accounts for 1.9% of the mass fraction of molten steel in the furnace; continue to keep warm for 4.0 minutes, and then add ferrovanadium with a particle size of 12-16mm and preheated at 9...

Embodiment 2

[0031] A high-tungsten-vanadium high-speed steel wear-resistant roll and a manufacturing method thereof. The outer layer (1) high-speed steel molten steel and the roll core (2) molten iron are respectively smelted in an electric furnace. The specific preparation process steps are as follows:

[0032] ① Melt the high-speed steel on the outer layer of the roll (1) in a 1500 kg medium frequency induction furnace first, and control the chemical composition and mass fraction of the molten steel in the furnace at 10.23%W, 1.94%Mo, 2.81%C, 0.031%P, 0.024 %S, 6.15% Cr, 2.46% Nb, 2.24% Si, 0.83% Mn, the balance is Fe and other unavoidable impurities; then the molten steel is heated to 1653°C, and after holding for 4.0 minutes, metal aluminum is added into the furnace. The amount of metal aluminum added accounts for 1.8% of the mass fraction of molten steel in the furnace; continue to keep warm for 3.0 minutes, and then add ferrovanadium with a particle size of 12-16mm and preheated at 9...

Embodiment 3

[0037] A high-tungsten-vanadium high-speed steel wear-resistant roll and a manufacturing method thereof. The outer layer (1) high-speed steel molten steel and the roll core (2) molten iron are respectively smelted in an electric furnace. The specific preparation process steps are as follows:

[0038] ① Melt the high-speed steel on the outer layer of the roll (1) in a 1000 kg medium frequency induction furnace first, and control the chemical composition and mass fraction of the molten steel in the furnace at 10.67%W, 1.76%Mo, 2.97%C, 0.030%P, 0.023 %S, 6.42% Cr, 2.27% Nb, 2.41% Si, 0.64% Mn, the balance is Fe and other unavoidable impurities; then the molten steel is heated to 1677 ° C, after 3.0 minutes of heat preservation, metal aluminum is added into the furnace, The amount of metal aluminum added accounts for 2.0% of the mass fraction of molten steel in the furnace; continue to keep warm for 4.0 minutes, and then add ferrovanadium with a particle size of 12-16mm and preheat...

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Abstract

The invention discloses a high-tungsten-vanadium high-speed steel wear-resistant roller and a manufacturing method thereof, and belongs to the technical field of steel rolling. An electric furnace isadopted for smelting outer-layer high-speed steel molten steel and roller core molten iron, outer-layer high-speed steel of the roller is smelted in the electric furnace firstly, the molten steel in the furnace is controlled to comprise the chemical components of, by mass percent, 10.23%-10.67% of W, 1.76%-1.94% of Mo, 2.81%-2.97% of C, less than 0.035% of P, less than 0.030% of S, 6.15%-6.42% ofCr, 2.27%-2.46% of Nb, 2.24%-2.41% of Si, 0.64%-0.83% of Mn, and the balance Fe and other inevitable impurities, then the molten steel is heated to 1653-1677 DEG C, aluminum and ferrovanadium are sequentially added, multi-element alloy particles are added into a ladle, and then the molten steel is poured into a roller on a vertical centrifuge. After heat treatment, the roller has good toughness and excellent wear resistance, is used for rolling high-strength low-alloy hot-rolled threaded steel, and is excellent in use effect.

Description

technical field [0001] The invention discloses a high-speed steel wear-resistant roll and a manufacturing method thereof, in particular relates to a high-tungsten-vanadium high-speed steel wear-resistant roll and a manufacturing method thereof, and belongs to the technical field of steel rolling. Background technique [0002] The roll is an important consumable part in steel rolling production, and the performance of the roll has an important influence on the production efficiency of the rolling mill and the surface quality of the rolled material. The research on developing new roll materials and improving the service life of rolls has aroused widespread concern at home and abroad. Commonly used hot roll materials mainly include semi-steel, high-nickel-chromium infinitely chilled cast iron, high-chromium cast iron, high-chromium steel and high-speed steel. [0003] In order to further improve the performance of the roll, the Chinese invention patent CN 107350456 discloses a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/16C22C37/10C22C38/04C22C38/06C22C38/22C22C38/24C22C38/26C22C38/28C22C38/34C22C38/36B21B27/02B22D13/02
CPCB21B27/02B22D13/02B22D19/16C22C37/10C22C38/001C22C38/002C22C38/005C22C38/04C22C38/06C22C38/22C22C38/24C22C38/26C22C38/28C22C38/34C22C38/36
Inventor 张政龙
Owner 安徽环渤湾高速钢轧辊有限公司
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