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Iron-aluminum-boron abrasion-resistant alloy and preparation method thereof

A boron wear-resistant and alloy technology, applied in the field of wear-resistant materials, can solve the problems of easy oxidation during heating and heat preservation, easy deformation of workpieces, increased energy consumption, etc., to improve high-temperature oxidation resistance, improve smelting efficiency, and improve wear resistance sexual effect

Active Publication Date: 2015-11-11
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, ordinary high-boron wear-resistant alloys must be quenched to obtain high hardness and excellent wear resistance, and quenching not only increases energy consumption, but is also easily oxidized during heating and heat preservation, and the workpiece is easy to deform Very easy to crack during cooling
In addition, ordinary high-boron wear-resistant alloys also have disadvantages such as poor high-temperature tempering stability and a sharp drop in high-temperature wear resistance.

Method used

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  • Iron-aluminum-boron abrasion-resistant alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] An iron-aluminum-boron wear-resistant alloy and a preparation method thereof, the manufacturing process steps are:

[0024] ①Use two 500kg medium-frequency induction furnaces to smelt high-boron multi-element alloy melt and aluminum-iron multi-element alloy melt at the same time respectively. The composition and mass fraction of high-boron multi-element alloy melt are: 3.01%B, 0.65%C, 4.13%Si , 1.02% Cr, 0.36% Mn, 0.023% S, 0.045% P, the balance Fe, the aluminum-iron multi-element alloy melt is composed of 60% Q235 scrap steel, 39% aluminum ingot and 1% ZnCl 2 It is smelted. During the smelting process of aluminum-iron multi-element alloy melt, 60% mass fraction of Q235 steel scrap is first added (the chemical composition and mass fraction of Q235 steel scrap are: 0.19%C, 0.47%Mn, 0.21%Si, 0.033%S, 0.040% %P, the balance being Fe), when the steel scrap is completely melted, start to add aluminum ingots with a mass fraction of 39%, and when the aluminum ingots are comple...

Embodiment 2

[0028] An iron-aluminum-boron wear-resistant alloy and a preparation method thereof, the manufacturing process steps are:

[0029] ①Use two 350 kg intermediate frequency induction furnaces to simultaneously melt high-boron multi-element alloy melt and aluminum-iron multi-element alloy melt. The composition and mass fraction of high-boron multi-element alloy melt are: 3.46%B, 0.53%C, 4.49%Si , 1.17% Cr, 0.28% Mn, 0.036% S, 0.041% P, the balance Fe, the aluminum-iron multi-element alloy melt is composed of 64% Q235 scrap steel, 34.5% aluminum ingot and 1.5% ZnCl 2 It is smelted. During the smelting process of aluminum-iron multi-element alloy melt, Q235 steel scrap with a mass fraction of 64% is first added (the chemical composition and mass fraction of Q235 steel scrap are: 0.18%C, 0.62%Mn, 0.18%Si, 0.035%S, 0.038% %P, the balance is Fe), when the steel scrap is completely melted, start to add aluminum ingots with a mass fraction of 34.5%, and when the aluminum ingots are compl...

Embodiment 3

[0033] An iron-aluminum-boron wear-resistant alloy and a preparation method thereof, the manufacturing process steps are:

[0034]①Use two 500 kg intermediate frequency induction furnaces to simultaneously melt high-boron multi-element alloy melt and aluminum-iron multi-element alloy melt. The composition and mass fraction of high-boron multi-element alloy melt are: 3.27%B, 0.59%C, 4.27%Si , 1.06% Cr, 0.42% Mn, 0.035% S, 0.047% P, the balance Fe, the aluminum-iron multi-element alloy melt is composed of 62% Q235 scrap steel, 37% aluminum ingot and 1.0% ZnCl 2 It is smelted. During the smelting process of the aluminum-iron multi-element alloy melt, Q235 steel scrap with a mass fraction of 62% is first added (the chemical composition and mass fraction of Q235 steel scrap are: 0.20%C, 0.43%Mn, 0.25%Si, 0.038%S, 0.039% %P, the balance being Fe), when the steel scrap is completely melted, start to add aluminum ingots with a mass fraction of 37%, and when the aluminum ingots are com...

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Abstract

The invention discloses iron-aluminum-boron abrasion-resistant alloy and a preparation method thereof, and belongs to the technical field of abrasion-resistant materials. A medium-frequency induction furnace is used for melting high-boron multicomponent alloy melt and aluminum-iron multicomponent alloy melt, and the high-boron multicomponent alloy melt comprises, by mass, 3.0%-3.5% of B, 0.50%-0.65% of C, 4.0%-4.5% of Si, 1.0%-1.2% of Cr, Mn smaller than 0.5%, S smaller than 0.04%, P smaller than 0.05% and the balance Fe. The aluminum-iron multicomponent alloy melt is formed by melting, by mass, 60%-65% of Q235 waste steel, 34%-39% of aluminum ingots and 1.0%-1.5% of ZnCl2. The aluminum-iron multicomponent alloy melt and the high-boron multicomponent alloy melt are poured into a casting ladle in sequence, and are poured into a mold after being stirred and slagged off, and the iron-aluminum-boron abrasion-resistant alloy with the good high temperature abrasion resisting performance can be obtained.

Description

technical field [0001] The invention discloses a wear-resistant alloy and a preparation method thereof, in particular to an iron-aluminum-boron wear-resistant alloy and a preparation method thereof, and belongs to the technical field of wear-resistant materials. Background technique [0002] Wear-resistant materials play a very important role in the national economy. Commonly used wear-resistant materials are mainly high-manganese steel, high-chromium cast iron and nickel-hard cast iron. High-manganese steel will show excellent wear resistance only when it transforms from austenite to martensite under strong industrial and mining impacts. High-chromium cast iron and nickel-hard cast iron contain expensive alloy elements such as nickel, molybdenum, vanadium, and niobium, resulting in high production costs and weak market competitiveness. On this basis, high-boron wear-resistant alloys have been successfully developed at home and abroad with cheap boron as the main alloying e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/34C22C33/06C21D6/00
Inventor 符寒光鞠江蒋志强冯锡兰魏永强刘元朋魏永辉刘建伟文振华王振侯军兴冯宪章
Owner BEIJING UNIV OF TECH
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