Preparation method of high-temperature anti-wear Fe-Cr-B-Al alloy

A fe-cr-b-al, high-temperature anti-wear technology, applied in the field of wear-resistant materials, can solve problems such as insufficient high-temperature wear resistance, and achieve the effects of improved anti-wear performance, excellent high-temperature wear resistance, and high hardness

Inactive Publication Date: 2014-11-26
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the above-mentioned high-temperature wear-resistant materials still have the defect of insufficient high-temperature wear resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The high-temperature wear-resistant Fe-Cr-B-Al alloy is prepared by laser cladding, and the specific preparation process steps are:

[0022] ① First, low-carbon ferrochrome powder with a particle size of 100-160 mesh and a mass fraction of 15.0% (the mass fraction of the chemical composition of the low-carbon ferrochrome powder is: 60.93% Cr, 0.24% C, 1.30% Si, 0.036% P, 0.013% S, balance Fe), 12.0% high-carbon ferrochrome powder (the chemical composition mass fraction of high-carbon ferrochrome powder is: 65.48% Cr, 7.72% C, 2.66% Si, 0.021% S, 0.047% P, remaining Fe), 6.0% ferroboron powder (the chemical composition mass fraction of ferroboron powder is: 19.38% B, 0.25% C, 0.84% ​​Si, 0.29% Al, 0.007% S, 0.065% P, the balance Fe), 6.0% metal aluminum powder, 1.5% rare earth ferrosilicon powder (the chemical composition mass fraction of rare earth ferrosilicon powder is: 27.96% RE, 39.93% Si, 2.06% Mn, 3.81% Ca, 1.38% Ti, 0.013% S, 0.028% P, balance Fe), 5.0% Fe 2 o ...

Embodiment 2

[0025] The high-temperature wear-resistant Fe-Cr-B-Al alloy is prepared by laser cladding, and the specific preparation process steps are:

[0026] ① First, low-carbon ferrochrome powder with a particle size of 100-160 mesh and a mass fraction of 12.0% (the mass fraction of the chemical composition of the low-carbon ferrochrome powder is: 64.28% Cr, 0.31% C, 1.29% Si, 0.030% P, 0.018% S, balance Fe), 15.0% high-carbon ferrochrome powder (mass fraction of chemical composition of high-carbon ferrochrome powder is: 63.56% Cr, 8.20% C, 2.69% Si, 0.025% S, 0.044% P, remaining Fe), 8.0% ferroboron powder (the chemical composition mass fraction of ferroboron powder is: 19.05% B, 0.31% C, 1.08% Si, 0.24% Al, 0.008% S, 0.072% P, the balance Fe), 5.0% metal aluminum powder, 2.0% rare earth ferrosilicon powder (the chemical composition mass fraction of rare earth ferrosilicon powder is: 28.84% RE, 40.58% Si, 1.83% Mn, 3.57% Ca, 1.20% Ti, 0.014% S, 0.027% P, balance Fe), 4.0% Fe 2 o 3 ...

Embodiment 3

[0029] The high-temperature wear-resistant Fe-Cr-B-Al alloy is prepared by laser cladding, and the specific preparation process steps are:

[0030] ① First, low-carbon ferrochrome powder with a particle size of 100-160 mesh and a mass fraction of 14.0% (the mass fraction of the chemical composition of the low-carbon ferrochrome powder is: 62.85% Cr, 0.28% C, 0.75% Si, 0.031% P, 0.016% S, balance Fe), 14.0% high-carbon ferrochrome powder (mass fraction of chemical composition of high-carbon ferrochrome powder is: 65.17% Cr, 7.94% C, 2.88% Si, 0.018% S, 0.046% P, remaining Fe), 7.0% ferroboron powder (the chemical composition mass fraction of ferroboron powder is: 19.96% B, 0.35% C, 1.48% Si, 0.15% Al, 0.005% S, 0.049% P, the balance Fe), 5.5% metal aluminum powder, 1.8% rare earth ferrosilicon powder (the chemical composition mass fraction of rare earth ferrosilicon powder is: 29.50% RE, 40.83% Si, 1.37% Mn, 3.01% Ca, 2.26% Ti, 0.013% S, 0.028% P, balance Fe), 4.5% Fe 2 o 3 ...

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Abstract

The invention discloses a preparation method of a high-temperature anti-wear Fe-Cr-B-Al alloy and belongs to the technical field of wear-resistant materials. The alloy is prepared by adopting a laser cladding process. The preparation method comprises the following steps: firstly, uniformly mixing 12.0wt%-15.0wt% of low-carbon Cr-Fe powder, 12.0wt%-15.0wt% of high-carbon Cr-Fe powder, 6.0wt%-8.0wt% of B-Fe powder, 5.0wt%-6.0wt% of metal Al powder, 1.5wt%-2.0wt% of re-Si-Fe powder, 4.0wt%-5.0wt% of Fe2O3 powder and 52wt%-57wt% of pure Fe powder, wherein the particle size of the powder is within a range of 100-160 meshes; and secondly, inputting heat by adopting an optical fiber laser device, and feeding the powder materials by adopting a laser cladding synchronous powder feeder to obtain the Fe-Cr-B-Al alloy which is high in hardness and good in high-temperature wear resistance, wherein in the cladding process, the powder feeding rate is 15-20g / min, the laser power is 1500-2500W, and the scanning speed is 3-8mm / s.

Description

technical field [0001] The invention discloses a method for preparing a high-temperature wear-resistant alloy, in particular to a method for preparing a high-temperature wear-resistant Fe-Cr-B-Al alloy, and belongs to the technical field of wear-resistant materials. Background technique [0002] High-temperature wear is an extremely severe wear condition, which requires high material performance. It must have good abrasive wear resistance and good oxidation and corrosion resistance. Traditional materials are difficult to meet the requirements. In order to improve the high-temperature wear resistance of materials, Chinese invention patent CN1451773A discloses a method for preparing a high-temperature and wear-resistant high-strength alloy. The composition of the alloy is C0.05-0.08, Cr18.0-20.0, Mo4.5-5.5, Al1.2~1.5, Ti2.5~3.1, Fe8.0~10.0, Ce≤0.025, B≤0.005, Si≤0.4, Mn≤0.4, S≤0.01, P≤0.012, Ni balance, vacuum induction melting technology, the feeding sequence is: from bottom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C38/32B22F1/00
Inventor 符寒光桑培蒋志强马胜强符定梅邢建东文振华王振冯宪章冯锡兰刘建伟魏永强刘元朋
Owner BEIJING UNIV OF TECH
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