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Ferroboron-containing alloy wear-resistant material and preparation method thereof

A technology of wear-resistant materials and base alloys, applied in the field of wear-resistant metal materials, can solve the problems of increased material cost and excessive addition of chromium, and achieve the effects of simple production process, excellent wear resistance and high hardness

Inactive Publication Date: 2012-07-04
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the addition of more expensive molybdenum elements and more chromium, the cost of materials increases

Method used

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  • Ferroboron-containing alloy wear-resistant material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Adopt 500 kilograms of intermediate frequency induction furnaces to smelt the material of the present invention, the concrete process steps are:

[0028] (1) 40% high manganese steel is returned to charge (mass percentage is as follows: 1.27% C, 12.65% Mn, 0.58% Si, 0.047% P, 0.020% S, balance Fe), 10% medium carbon ferrochromium (mass percentage As follows: 62.65% Cr, 1.57% C, 1.86% Si, 0.05% P, 0.02% S, balance Fe) and 42% Q235 steel scrap (mass percentages are as follows: 0.19% C, 0.53% Mn, 0.26% Si, 0.01 %S, 0.03%P, balance Fe) mixed heating and melting, when the temperature reaches 1483 ° C, add 0.4% nitrogen-containing ferromanganese (mass percentages are as follows: 75.04% Mn, 5.30% N, 0.27% C, 0.98% Si, 0.01% S, 0.08% P, balance Fe) and 1.5% silicon calcium barium alloy (46.36% Si, 14.07% Ca, 17.29% Ba, 3.40% Al, 0.47% C, 0.02% S, 0.04% P, balance Fe), then heated to 1525°C, and added 0.6% ferrotitanium (30.84% ​​titanium content), 5% ferroboron (20.51% boron c...

Embodiment 2

[0032] Adopt 500 kilograms of intermediate frequency induction furnaces to smelt the material of the present invention, the concrete process steps are:

[0033] (1) 45% high manganese steel is returned to charge (mass percentage is as follows: 1.27% C, 12.65% Mn, 0.58% Si, 0.047% P, 0.020% S, balance Fe), 12% medium carbon ferrochrome (mass percentage As follows: 62.65% Cr, 1.57% C, 1.86% Si, 0.05% P, 0.02% S, balance Fe) and 37% Q235 steel scrap (mass percentages are as follows: 0.19% C, 0.53% Mn, 0.26% Si, 0.01 %S, 0.03%P, balance Fe) mixed heating and melting, when the temperature reaches 1498 ° C, add 0.6% nitrogen-containing ferromanganese (mass percentages are as follows: 75.04% Mn, 5.30% N, 0.27% C, 0.98% Si, 0.01% S, 0.08% P, balance Fe) and 1.2% silicon calcium barium alloy (46.36% Si, 14.07% Ca, 17.29% Ba, 3.40% Al, 0.47% C, 0.02% S, 0.04% P, balance Fe), then heated to 1549°C, and added 0.9% ferro-titanium (30.84% ​​titanium content), 3% ferro-boron (20.51% boron con...

Embodiment 3

[0037] Adopt 500 kilograms of intermediate frequency induction furnaces to smelt the material of the present invention, the concrete process steps are:

[0038] (1) 42% high manganese steel is returned to charge (mass percentage is as follows: 1.27% C, 12.65% Mn, 0.58% Si, 0.047% P, 0.020% S, balance Fe), 11% medium carbon ferrochrome (mass percentage As follows: 62.65% Cr, 1.57% C, 1.86% Si, 0.05% P, 0.02% S, balance Fe) and 40% Q235 steel scrap (mass percentages are as follows: 0.19% C, 0.53% Mn, 0.26% Si, 0.01 %S, 0.03%P, balance Fe) mixed heating and melting, when the temperature reaches 1489 ° C, add 0.5% nitrogen-containing ferromanganese (mass percentages are as follows: 75.04% Mn, 5.30% N, 0.27% C, 0.98% Si, 0.01% S, 0.08% P, balance Fe) and 1.3% silicon calcium barium alloy (46.36% Si, 14.07% Ca, 17.29% Ba, 3.40% Al, 0.47% C, 0.02% S, 0.04% P, balance Fe), then heated to 1531°C, and added 0.8% ferro-titanium (30.84% ​​titanium content), 4% ferro-boron (20.51% boron c...

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Abstract

The invention relates to a ferroboron-containing alloy wear-resistant material and a preparation method thereof, belonging to the technical field of wear-resistant metallic materials. The ferroboron-containing alloy wear-resistant material contains 40-45% of high-manganese steel melt-down material, 3-5% of ferroboron, 10-12% of medium carbon ferrochrome, 0.6-0.9% of ferrotitanium, 1.2-1.5% of calcium silicate barium alloy, 0.3-0.5% of ferrozirconium, 0.4-0.6% of nitrogen ferromanganese and 37-42% of Q235 scrap steel. The wear-resistant material provided by the invention can be produced by using an electric furnace and is prepared by adopting a process that a ventilation plug is mounted at the bottom of a steel ladle so as to insufflate argon gas and carrying out oil hardening; the ferroboron-containing alloy wear-resistant material provided by the invention consists of martensite, austenite, bainite and carbon-boron compounds of Cr7(C,B)3 and Cr3(B,C), has the characteristics of high strength and hardness, good toughness and wear resistance and the like, and has a good use effect in the manufacture of a lining board of a stirring machine and a hammer of a crusher.

Description

technical field [0001] The invention relates to an iron-based alloy wear-resistant material and a preparation method thereof, in particular to a boron-containing iron-based alloy wear-resistant material and a preparation method thereof, belonging to the technical field of wear-resistant metal materials. Background technique [0002] High-carbon high-manganese steel and low-alloy cast steel are traditional wear-resistant materials, which have been widely used in metallurgy, mining, building materials and electric power. In order to improve the wear resistance of high manganese steel, Chinese invention patent CN102230142A discloses a high manganese steel with super high strength, high impact resistance and high wear resistance. Composed of the following components by weight percentage: carbon: 0.9-1.2, silicon: 0.3-0.6, manganese: 16-22, chromium: 1.5-2.0, molybdenum: 0.5-0.8, nickel: 0.3-0.5, copper: 0.2 ~0.4, sulfur: ≤0.04, phosphorus: ≤0.03, compound rare earth modifier: 0...

Claims

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Application Information

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IPC IPC(8): C22C38/32C21C5/52C21C7/072C21D1/18
CPCY02P10/20
Inventor 符寒光蒋志强邢建东马胜强雷永平林健吴中伟
Owner BEIJING UNIV OF TECH
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