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Preparation method of high-boron and wear-resistant alloy

A kind of anti-corrosion and alloy technology, which is applied in the preparation of corrosion-resistant and wear-resistant alloys and high-boron anti-corrosion alloys. It can solve the problems of poor high-temperature abrasion resistance, easy peeling, and coarse structure, and achieve excellent resistance to high-temperature molten zinc corrosion. Abrasion ability, good anti-corrosion and wear performance of zinc liquid, and the effect of overcoming complex process

Active Publication Date: 2014-12-10
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 anti-abrasion alloys may have coarse structure, high brittleness, easy to peel off during use, or poor high-temperature anti-abrasion performance, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The high-boron wear-resistant alloy is prepared by laser cladding, and the specific preparation process steps are:

[0019] ① First, the particle size range of the powder is 140-200 mesh, and the mass fraction is 45% ferroboron powder (the chemical composition mass fraction of ferroboron powder is: 19.04% B, 0.27% C, 1.33% Si, 0.20% Al, 0.008 %S, 0.063%P, balance Fe), 16% ferrochrome powder (mass fraction of chemical composition of ferrochrome powder is: 62.15%Cr, 7.34%C, 2.07%Si, 0.028%S, 0.035%P, balance Fe), 3% molybdenum iron powder (the chemical composition mass fraction of molybdenum iron powder is: 69.38% Mo, 0.71% Si, 0.056% S, 0.041% P, 0.034% Sb, 0.26% Sn, the balance Fe), 4.6% Mix pure nickel powder, 1.5% WC powder and 29.9% pure iron powder evenly.

[0020] ② Use the IPG 6kW fiber laser to carry out laser cladding on the 316L stainless steel base material by using the IPG 6kW fiber laser and the synchronous powder feeding method. The powder feeding rate is ...

Embodiment 2

[0022] The high-boron wear-resistant alloy is prepared by laser cladding, and the specific preparation process steps are:

[0023] ① First, the particle size range of the powder is 140-200 mesh, and the mass fraction is 50% ferroboron powder (the chemical composition mass fraction of ferroboron powder is: 20.84% ​​B, 0.25% C, 0.87% Si, 0.20% Al, 0.006 %S, 0.071%P, balance Fe), 14% ferrochromium powder (mass fraction of chemical composition of ferrochrome powder is: 61.42%Cr, 7.10%C, 2.37%Si, 0.038%S, 0.045%P, balance Fe), 5% ferromolybdenum powder (the chemical composition mass fraction of ferromolybdenum powder is: 67.88% Mo, 0.92% Si, 0.063% S, 0.036% P, 0.037% Sb, 0.15% Sn, the balance Fe), 4% Mix pure nickel powder, 2% WC powder and 25% pure iron powder evenly.

[0024] ②Using the IPG 6kW fiber laser and adopting synchronous powder feeding method to carry out laser cladding on the 316L stainless steel base material with the above uniformly mixed powder, the powder feeding...

Embodiment 3

[0026] The high-boron wear-resistant alloy is prepared by laser cladding, and the specific preparation process steps are:

[0027] ① First, the particle size range of the powder is 140-200 mesh, and the mass fraction is 48% boron iron powder (the chemical composition mass fraction of boron iron powder is: 20.14% B, 0.38% C, 1.15% Si, 0.33% Al, 0.007 %S, 0.052%P, balance Fe), 15% ferrochromium powder (mass fraction of chemical composition of ferrochrome powder is: 64.17%Cr, 6.99%C, 2.34%Si, 0.041%S, 0.046%P, balance Fe), 4% ferromolybdenum powder (the chemical composition mass fraction of ferromolybdenum powder is: 69.50% Mo, 1.04% Si, 0.075% S, 0.048% P, 0.067% Sb, 0.38% Sn, the balance Fe), 4.3% Mix pure nickel powder, 2.5% WC powder and 26.2% pure iron powder evenly.

[0028] ②Using the IPG 6kW fiber laser and synchronous powder feeding method, laser cladding is carried out on the 316L stainless steel base material with the uniformly mixed powder, the powder feeding rate is...

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Abstract

The invention discloses a preparation method of a high-boron and wear-resistant alloy, belonging to the technical field of molten zinc corrosion wear materials. The preparation method comprises the steps of uniformly mixing 45-50% of boron and iron powder, 14-16% of chromium iron powder, 3-5% of molybdenum iron powder, 4-4.6% of pure nickel powder, 1.5-2.5% of WC powder and 25-30% of pure iron powder which are within the particle size range of 140-200 meshes; and carrying out laser cladding on a stainless steel base material by using a fiber laser and a synchronous powder feeding method to obtain a high-boron and wear-resistant alloy laser cladding layer, the surface of which has no cracks, inclusions and air holes and is smooth.

Description

technical field [0001] The invention relates to a preparation method of a corrosion-resistant wear-resistant alloy, in particular to a preparation method of a high-boron wear-resistant alloy, which belongs to the technical field of corrosion materials. Background technique [0002] In the hot-dip galvanizing production line, key roll components such as sinking rolls, stabilizing rolls, and straightening rolls not only suffer from strong corrosion in the high-temperature molten zinc solution, but also the moving speed of the roll surface for conveying the steel strip is as high as 35-40m / s, which is extremely susceptible to wear and tear. Under the combined effect of these two aspects, surface damage such as pitting, pitting, wear marks, and zinc tumors is extremely prone to occur on the roll surface, resulting in frequent replacement of the above-mentioned components and reducing the operating rate of the hot-dip galvanizing equipment. In order to improve the high temperatu...

Claims

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Application Information

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IPC IPC(8): C22C1/04C22C30/00C23C24/10
Inventor 符寒光蔡凯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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