Method for preparing high-chromium wear-resistant alloy through laser cladding

A laser cladding and wear-resistant alloy technology, which is applied in the field of laser cladding to prepare alloys and laser cladding to prepare high-chromium wear-resistant alloys, can solve the problem of low bonding strength between the cladding layer and the base material, and the cladding layer is prone to cracks, The problem of low hardness of the cladding layer can achieve the effect of high hardness, good hardness uniformity and large quantity

Inactive Publication Date: 2013-08-07
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned laser cladding technology has disadvantages such as low bonding strength between the cladding layer and the base material, easy cracks in the cladding layer, low hardness and poor wear resistance of the cladding layer.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for preparing a high-chromium wear-resistant alloy by laser cladding, the specific process steps are as follows:

[0021] 1) First use Fe-Cr-B powder and WC powder with a mass fraction of 1.65%B, 15%Cr, 1.5%Si, 0.15%C, and the balance of Fe, nickel-coated graphite powder with a mass fraction of nickel of 60%, mass Fraction 60%Cr, 7.5%C, 2.44%Si, 0.026%S, 0.038%P, high carbon ferrochromium powder with balance Fe and mass fraction 55%V, 1.36%Si, 1.47%Al, 0.018%S, 0.030 %P, 0.05%C, the balance of Fe vanadium iron powder mixed evenly, the particle size of the powder is 100-120μm, the mass fraction of Fe-Cr-B powder is 80.8%, and the mass fraction of WC powder is 5.5% %, the mass fraction of nickel-coated graphite powder is 1.2%, the mass fraction of high-carbon ferrochrome powder is 10%, and the mass fraction of vanadium iron powder is 2.5%.

[0022] 2. Use the IPG YLR-6000 fiber laser to carry out laser cladding on the base material of Cr12MoV steel by using the ...

Embodiment 2

[0024] A method for preparing a high-chromium wear-resistant alloy by laser cladding, the specific process steps are as follows:

[0025] 1) First use Fe-Cr-B powder and WC powder with a mass fraction of 1.65%B, 15%Cr, 1.5%Si, 0.15%C, and the balance of Fe, nickel-coated graphite powder with a mass fraction of nickel of 60%, mass Fraction 65%Cr, 6.8%C, 2.16%Si, 0.028%S, 0.041%P, high carbon ferrochromium powder with balance Fe and mass fraction 50.0%V, 1.52%Si, 2.04%Al, 0.018%S, 0.033 %P, 0.06%C, Fe-vanadium powder with the balance of Fe are mixed evenly, the particle size of the powder is 100-120μm, the mass fraction of Fe-Cr-B powder is 81.5%, and the mass fraction of WC powder is 6.0 %, the mass fraction of nickel-coated graphite powder is 1.0%, the mass fraction of high-carbon ferrochrome powder is 8%, and the mass fraction of vanadium iron powder is 3.5%.

[0026] 2. Use the IPG YLR-6000 fiber laser to carry out laser cladding on the base material of Cr12MoV steel by usi...

Embodiment 3

[0028] A method for preparing a high-chromium wear-resistant alloy by laser cladding, the specific process steps are as follows:

[0029] 1) First use Fe-Cr-B powder and WC powder with a mass fraction of 1.65%B, 15%Cr, 1.5%Si, 0.15%C, and the balance of Fe, nickel-coated graphite powder with a mass fraction of nickel of 60%, mass Fraction 63.4%Cr, 7.2%C, 2.09%Si, 0.032%S, 0.054%P, high carbon ferrochrome powder with balance Fe and mass fraction 51.8%V, 1.46%Si, 2.30%Al, 0.026%S, 0.031 %P, 0.08%C, the balance of Fe vanadium iron powder mixed evenly, the particle size of the powder is 100-120μm, the mass fraction of Fe-Cr-B powder is 81.1%, and the mass fraction of WC powder is 5.8% %, the mass fraction of nickel-coated graphite powder is 1.1%, the mass fraction of high-carbon ferrochrome powder is 9%, and the mass fraction of vanadium iron powder is 3.0%.

[0030] 2. Use the IPG YLR-6000 fiber laser to carry out laser cladding on the base material of Cr12MoV steel by using the...

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Abstract

The invention discloses a method for preparing a high-chromium wear-resistant alloy through laser cladding. The method is characterized by comprising steps of: firstly, uniformly mixing 80-82% of Fe-Cr-B powder, 5.5-6.0% of wolfram carbide powder, 1.0-1.2% of nickel-coated graphite powder, 8-10% of high-carbon ferrochrome powder and 2.5-3.5% of ferrovanadium powder according to mass fractions; utilizing a fiber optic laser and adopting a synchronous power feeding method to carry out laser cladding on a basic material of a Crl2Move steel, wherein the power feeding rate is 12-15g / min, the laser power is 2.0-2.5KW, the scanning velocity is 4-6mm / s, and the number of the cladding layers is 4-6; and finally, obtaining a high-chromium wear-resistant alloy laser cladding layer with high hardness, good wear resistance, surface without cracks, impurities and pores and smooth surface.

Description

technical field [0001] The invention discloses a method for preparing an alloy by laser cladding, in particular to a method for preparing a high-chromium wear-resistant alloy by laser cladding, which belongs to the field of surface technology. Background technique [0002] In metallurgy, mining, cement, thermal power generation and other industrial fields, the consumption of wear-resistant materials accounts for a considerable proportion of the entire energy consumption and economic costs. The 2009 Chinese Academy of Engineering Consulting Research Report shows that in 2006, the national consumption of friction, wear and lubrication was 950 billion yuan, accounting for 4.5% of the gross national product (GDP). Only the loss of crushing equipment, excavator liners, slurry pumps, etc., shall not be less than 20 billion yuan per year, of which, grinding balls shall not be less than 10 billion yuan, liners shall not be less than 4 billion yuan, hammer heads shall not be less tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
Inventor 符寒光蒋业华乔虹雷永平刘洪喜
Owner BEIJING UNIV OF TECH
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