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Chromium-aluminum alloying Fe-B alloy resisting corrosive wear of zinc liquid and manufacturing method of chromium-aluminum alloying Fe-B alloy

A technology for anti-corrosion of zinc liquid and chromium-aluminum alloy, applied in the field of corrosion and wear, can solve the problems of decreased material strength and toughness, poor corrosion and wear resistance of zinc liquid, etc., and achieves improved anti-corrosion ability of zinc liquid, low manufacturing cost, and low production cost. The effect of simple process

Active Publication Date: 2018-06-29
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the corrosion and wear resistance of the above integral casting materials is poor, especially the addition of a large amount of boron, which leads to a significant decrease in the strength and toughness of the material

Method used

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  • Chromium-aluminum alloying Fe-B alloy resisting corrosive wear of zinc liquid and manufacturing method of chromium-aluminum alloying Fe-B alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Chromium-aluminum Alloy Fe-B alloy, resistant to zinc liquid corrosion and wear, is smelted in a 500kg medium-frequency induction furnace. The manufacturing process steps are:

[0027] ① Mix and heat scrap steel, ferrochromium, ferromolybdenum, and recarburizer to form molten steel, and control the chemical composition and mass fraction of molten steel in the furnace to 18.53% Cr, 2.41% Mo, 0.59% C, 0.52% Si, 0.44% Mn, 0.037% P, 0.024% S, the balance Fe, and the temperature of the molten steel was raised to 1603 ° C, followed by adding pure aluminum and boron iron (the chemical composition and mass fraction of boron iron: 17.35% B, 0.06% Al, 2.19 %Si, 0.28%C, 0.13%P, 0.008%S, 0.57%Mn, balance Fe), the amount of pure aluminum added accounted for 9.8% of the mass fraction of molten steel in the furnace, and the amount of ferroboron added accounted for 19.7% of the mass fraction of molten steel in the furnace %, the particle size of ferroboron is 12-18mm, and the ferroboro...

Embodiment 2

[0031] Chromium-aluminum Alloy Fe-B alloy which is anti-corrosion and wear of molten zinc is smelted in a 1500kg medium frequency induction furnace. The manufacturing process steps are:

[0032] ① Mix and heat scrap steel, ferrochromium, ferromolybdenum, and recarburizer to form molten steel, and control the chemical composition and mass fraction of molten steel in the furnace to 19.28% Cr, 2.26% Mo, 0.66% C, 0.40% Si, 0.42% Mn, 0.033% P, 0.027% S, the balance Fe, and the temperature of the molten steel was raised to 1619 ° C, followed by adding pure aluminum and boron iron (the chemical composition and mass fraction of boron iron: 20.74% B, 0.05% Al, 2.81 %Si, 0.30%C, 0.12%P, 0.007%S, 0.49%Mn, balance Fe), the amount of pure aluminum added accounted for 10.3% of the mass fraction of molten steel in the furnace, and the amount of ferroboron added accounted for 19.1% of the mass fraction of molten steel in the furnace %, the particle size of ferroboron is 12-18mm, and the ferro...

Embodiment 3

[0036] Chromium-aluminum Alloy Fe-B alloy, resistant to zinc liquid corrosion and wear, is smelted in a 1000kg medium-frequency induction furnace. The manufacturing process steps are:

[0037] ① Mix and heat scrap steel, ferrochromium, ferromolybdenum, and recarburizer to form molten steel, and control the chemical composition and mass fraction of molten steel in the furnace to 18.90% Cr, 2.35% Mo, 0.63% C, 0.32% Si, 0.46% Mn, 0.028% P, 0.015% S, the balance Fe, and the molten steel temperature is raised to 1614 ° C, followed by adding pure aluminum and ferroboron (the chemical composition and mass fraction of ferroboron are: 18.37% B, 0.06% Al, 2.53 %Si, 0.24%C, 0.09%P, 0.004%S, 0.35%Mn, balance Fe), the amount of pure aluminum added accounted for 10.1% of the mass fraction of molten steel in the furnace, and the amount of ferroboron added accounted for 19.5% of the mass fraction of molten steel in the furnace %, the particle size of ferroboron is 12-18mm, and the ferroboron ...

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Abstract

The invention relates to a chromium-aluminum alloying Fe-B alloy resisting corrosive wear of zinc liquid and a manufacturing method of the chromium-aluminum alloying Fe-B alloy, which belongs to the technical field of corrosion wear. An electric furnace is used for mixing, heating and melting waste steel, ferrochrome, ferromolybdenum and carburant to form molten steel, the chemical composition andmass percent of the molten steel in the furnace are controlled at: 18.53 to 19.28 percent of Cr, 2.26 to 2.41 percent of Mo, 0.59 to 0.66 percent of C, less than 0.65 percent of Si, less than 0.48 percent of Mn, less than 0.04 percent of P, less than 0.03 percent of S, and the balance of Fe, the temperature of the molten steel is heated to 1603 to 1619 DEG C, pure aluminum and ferroboron are successively added, (Ti,Nb)C particles are poured along with the metal molten liquid in the metal molten liquid pouring process, and finally the mixture is poured and casted to obtain the chromium-aluminum alloying Fe-B alloy. The chromium-aluminum alloying Fe-B alloy has good zinc liquid corrosive wear resistance.

Description

technical field [0001] The invention discloses a zinc liquid corrosion and wear resistant Fe-B alloy and a manufacturing method thereof, in particular to a zinc liquid corrosion and wear resistant chromium aluminum alloyed Fe-B alloy and a manufacturing method thereof, belonging to the technical field of corrosion wear. Background technique [0002] Submerged rolls, stabilizing rolls, roll bearings and bearing supports in the galvanizing production line in the metallurgical industry are immersed in molten zinc at 450-480°C, and are subject to severe zinc corrosion and wear, and their working life is generally short. At present, the coating of the above-mentioned components mainly adopts tungsten carbide-cobalt (WC-Co) or molybdenum boride-cobalt (MoB-Co) as the powder material. [0003] Chinese invention patent CN102517532 discloses a coating material resistant to molten zinc corrosion for thermal spraying and a preparation method of the coating material, including using η-p...

Claims

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Application Information

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IPC IPC(8): C22C38/22C22C38/02C22C38/04C22C38/06C22C33/06
Inventor 符寒光马胜强王勇邢建东
Owner BEIJING UNIV OF TECH
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