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Wear-resistant alloy containing V and Cr and preparation method thereof

A wear-resistant alloy and ferrovanadium alloy technology are applied in the fields of wear-resistant alloys and their preparation, vanadium-chromium wear-resistant alloys and their preparation fields, and can solve the problems of waste of resources, high prices, expensive vanadium elements, etc., and achieve good wear resistance. , good toughness, high hardness

Inactive Publication Date: 2015-07-01
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned wear-resistant materials have excellent wear resistance, they contain more expensive vanadium elements, resulting in a huge waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A vanadium-chromium-containing wear-resistant alloy and a preparation method thereof, the specific preparation process steps are:

[0026] ① First, add pig iron, recarburizer, scrap steel, ferrochrome, ferro-niobium and ferro-molybdenum into a 500 kg intermediate frequency induction furnace, melt the furnace materials, and raise the temperature to 1532°C. The composition and its mass fraction are controlled at: 3.22%C, 10.17%Cr, 3.49%Mo, 4.05%Nb, 0.69%Si, 0.58%Mn, 0.041%S, 0.044%P, and the balance is Fe and unavoidable impurities;

[0027] ② Continue to preheat the vanadium-iron alloy at 800°C for 100 minutes (the chemical composition and mass fraction of the vanadium-iron alloy are: 51.30% V, 0.17% C, 0.046% P, 0.033% S, 1.24% Si, 0.95% Al, the balance Fe), titanium-iron alloy (the chemical composition and mass fraction of titanium-iron alloy are: 40.25% Ti, 6.28% Al, 2.39% Si, 0.016% S, 0.025% P, 0.075% C, 0.13% Cu, 2.04% Mn, the balance Fe) and boron-iron alloy (the...

Embodiment 2

[0031] A vanadium-chromium-containing wear-resistant alloy and a preparation method thereof, the specific preparation process steps are:

[0032] ① First, add pig iron, recarburizer, scrap steel, ferrochrome, ferro-niobium and ferro-molybdenum into a 1000 kg intermediate frequency induction furnace, melt the furnace materials, and raise the temperature to 1549 ° C, the chemical reaction of the molten metal in the furnace The composition and its mass fraction are controlled at: 3.49%C, 11.84%Cr, 3.01%Mo, 4.46%Nb, 0.70%Si, 0.62%Mn, 0.038%S, 0.040%P, and the balance is Fe and unavoidable impurities;

[0033] ②Continue to preheat the vanadium-iron alloy at 750°C for 150 minutes (the chemical composition and mass fraction of the vanadium-iron alloy are: 54.10% V, 0.23% C, 0.047% P, 0.029% S, 1.28% Si, 1.09% Al, the balance Fe), titanium-iron alloy (the chemical composition and mass fraction of titanium-iron alloy are: 38.22% Ti, 5.01% Al, 2.76% Si, 0.021% S, 0.026% P, 0.091% C, 0.1...

Embodiment 3

[0037] A vanadium-chromium-containing wear-resistant alloy and a preparation method thereof, the specific preparation process steps are:

[0038] ① First, add pig iron, recarburizer, scrap steel, ferrochrome, ferro-niobium and ferro-molybdenum into a 500 kg intermediate frequency induction furnace, melt the furnace materials, and raise the temperature to 1539°C. The composition and its mass fraction are controlled at: 3.37%C, 10.92%Cr, 3.41%Mo, 4.27%Nb, 0.59%Si, 0.60%Mn, 0.039%S, 0.045%P, and the balance is Fe and unavoidable impurities;

[0039] ②Continue to preheat vanadium iron alloy at 780°C for 120 minutes (the chemical composition and mass fraction of vanadium iron alloy are: 48.59% V, 0.30% C, 0.039% P, 0.026% S, 0.93% Si, 0.88% Al, the balance Fe), titanium-iron alloy (the chemical composition and mass fraction of titanium-iron alloy are: 39.05% Ti, 7.28% Al, 2.31% Si, 0.020% S, 0.024% P, 0.085% C, 0.21% Cu, 2.06% Mn, the balance Fe) and boron-iron alloy (the chemical...

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Abstract

The invention provides a wear-resistant alloy containing V and Cr and a preparation method thereof, belonging to the technical field of metal wear-resistant materials. The preparation method of the alloy comprises the following steps: firstly adding pig iron, a carburant, steel scrap, ferrochromium, ferroniobium, ferromolybdenum and other furnace charge and raising temperature to 1530-1550 DEG C, controlling the chemical components of molten metal in a furnace as follows in mass fraction: 3.2-3.5% of C, 10-12% of Cr, 3.0-3.5% of Mo, 4.0-4.5% of Nb, less than 0.8% of Si, less than 0.8% of Mn, less than 0.05% of S, less than 0.05% of P and the balance of Fe and inevitable impurities; further adding a proper amount of ferrovanadium alloy, ferro-titanium alloy and ferroboron alloy; and finally adding nitrogen-bearing ferrochromium, nickel-magnesium alloy, metal zinc and SI-Ca-Ba-Al alloy. The prepared alloy material has excellent properties after being subjected to heat treatment.

Description

technical field [0001] The invention discloses a wear-resistant alloy and a preparation method thereof, in particular to a vanadium-chromium-containing wear-resistant alloy and a preparation method thereof, and belongs to the technical field of metal wear-resistant materials. Background technique [0002] Wear-resistant material is a kind of material with extremely huge consumption, which causes a huge waste of resources and energy. In order to improve the wear resistance of materials, the Chinese invention patent CN102660714A discloses a high-carbon and high-vanadium wear-resistant steel, the mass percentage of which is: carbon (C) 2.2%-2.4%, vanadium (V) 8.4%-8.7%, chromium (Cr) 5.8%-6.3%, molybdenum (Mo) 2.3%-2.7%, nickel (Ni) 0.8%-0.9%, niobium (Nb) 1.6%-1.7%, silicon (Si) 0.7%-0.9%, phosphorus (P)<0.04%, sulfur (S)<0.04%, and the balance is iron (Fe). The high-carbon and high-vanadium wear-resistant steel provided by the invention increases the content of molybd...

Claims

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Application Information

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IPC IPC(8): C22C33/08C22C37/06C22C37/08C22C37/10
Inventor 雷永平王开明蒋志强符寒光冯锡兰
Owner BEIJING UNIV OF TECH
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