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Particle-reinforced nickel-base metal powder for ultra high-speed laser cladding

A technology of laser cladding and particle enhancement, which is applied in the direction of metal processing equipment, metal material coating technology, coating, etc., can solve the problem that cannot meet the process requirements, cannot meet the technical requirements of ultra-high-speed laser cladding technology, and the powder spot diameter is large and other problems, to achieve excellent corrosion resistance to inorganic acids, smooth and smooth surface, and improve the effect of surface processing rate

Inactive Publication Date: 2018-06-08
ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] According to the current published patents, traditional laser cladding powders cannot meet the technological requirements of ultra-high-speed laser cladding
After the powder is conveyed and gathered by the cladding head, the powder spot diameter is relatively large, which cannot meet the process requirements of ultra-high-speed laser cladding small powder spots

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The mass fraction of each element is: 0.05%C, 21%Cr, 9.1%Mo, 3.6%Nb, 2.5%Fe, 0.4%Al, 0.2%Ti, P≤0.030%, S≤0.030%, 15%WC particles , the balance being Ni and unavoidable impurities.

[0046] The metal powder particle size: 10-100μm; fluidity: 17s / 50g; sphericity ≥ 90%; D 50 =40μm.

[0047] The preparation method is as follows: the raw material components are alloyed and proportioned, and then the nickel ingot is vacuum smelted, and the nickel ingot is melted by medium frequency induction heating, and the vacuum degree of the melting chamber is 10 -1 -10 -2 Pa, using gas atomization method to make powder, the pressure of argon gas for powder spraying is 1.2-3.7MPa, and the particle size sieving is carried out after the powder is collected.

[0048] Select the WC powder with a particle size range of 10-100um, and mix it with the sieved powder evenly in the mixer to prepare the particle-reinforced nickel-based metal powder for ultra-high-speed laser cladding.

[0049] Th...

Embodiment 2

[0056] The mass fraction of each element is: 0.03%C, 19.1%Cr, 3.0%Mo, 5.1%Nb, 7.5%Fe, 0.5%Al, 0.9%Ti, 0.2%Mn, 0.2%Si, P≤0.030%, S ≤0.030%, 5% Al2O3 powder, 5% ZrO2 powder, the balance is Ni and unavoidable impurities.

[0057] The particle size of the metal powder is: 10-100μm, fluidity: 17s / 50g, sphericity ≥ 91%, D 50 =42μm.

[0058] The preparation method is as follows: the raw material components are alloyed and proportioned, and then the nickel ingot is vacuum smelted, and the nickel ingot is melted by medium frequency induction heating, and the vacuum degree of the melting chamber is 10 -1 -10 -2 Pa, using gas atomization method to make powder, the pressure of argon gas for powder spraying is 1.2-3.7MPa, and the particle size sieving is carried out after the powder is collected.

[0059] Select Al2O3 powder and ZrO2 powder with a particle size range of 10-100um, and mix them uniformly with the sieved powder in a mixer to prepare particle-reinforced nickel-based metal p...

Embodiment 3

[0067] The mass fraction of each element is: 0.05%C, 30%Cr, 0.5%Mo, 2.1%Nb, 10%Fe, 0.5%Al, 0.5%Ti, 0.5%Mn, 0.6%Si, P≤0.030%, S ≤0.030%, 5% WC powder and 10% TiC powder, the balance is Ni and unavoidable impurities.

[0068] The metal powder particle size: 10-100μm; fluidity: 16s / 50g; sphericity ≥ 91%; D 50 =43μm.

[0069] The preparation method is as follows: the raw material components are alloyed and proportioned, and then the nickel ingot is vacuum smelted, and the nickel ingot is melted by medium frequency induction heating, and the vacuum degree of the melting chamber is 10 -1 -10 -2 Pa, using gas atomization method to make powder, the pressure of argon gas for powder spraying is 1.2-3.7MPa, and the particle size sieving is carried out after the powder is collected.

[0070] Select WC powder and TiC powder with a particle size range of 10-100um, and mix them evenly with the sieved powder in a mixer to prepare particle-reinforced nickel-based metal powder for ultra-high...

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Abstract

The invention relates to particle-reinforced nickel-base metal powder for ultra high-speed laser cladding, and belongs to the field of metal material manufacturing. The particle-reinforced nickel-basemetal powder is composed of nickel substrate metal powder and oxide or carbide particles, and mainly comprises 50-98% of the nickel substrate metal powder, 2-50% of one of Al2O3, ZrO2, WC and TiC ormixed powder formed by combing two or more of the Al2O3, the ZrO2, the WC and the TiC. The nickel substrate comprises the chemical components of, by mass, 0-0.1% of C, 2.0-30.0% of Cr, 2.0-30.0% of Mo, 0.1-5.0% of Nb, 0-6.0% of Fe, 0-0.6% of Al, 0-0.6% of Ti, 0-0.8% of Mn, 0-0.8% of Si, 0-2.0% of Co, 0-0.030% of P, 0-0.030% of S, and the balance Ni and inevitable impurities, and the optimal totalcontent of the Cr and the Mo is 5.0-40.0%. The particle-reinforced metal powder is applied, the laser cladding technology is adopted, different processes are matched, and the surface of the substrateis subjected to strengthening and repairing.

Description

technical field [0001] The invention belongs to the field of metal materials, in particular to a particle-reinforced nickel-based metal powder for ultra-high-speed laser cladding. Background technique [0002] According to the current published patents, traditional laser cladding powders cannot meet the technological requirements of ultra-high-speed laser cladding. After the powder is conveyed and converged by the cladding head, the diameter of the powder spots is relatively large, which cannot meet the technological requirements of ultra-high-speed laser cladding of small powder spots. [0003] In view of this, it is necessary to provide a nickel-based alloy powder to achieve ultra-high-speed laser cladding, and then provide a good coating material for surface modification of corrosion resistance and high temperature resistance to oxidation. Contents of the invention [0004] The nickel-based alloy of the invention is a type of alloy with comprehensive properties such as...

Claims

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Application Information

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IPC IPC(8): C23C24/10B22F1/00B22F9/08C22C19/05C22C30/00C22C32/00
CPCC22C19/055C22C19/056C22C19/057C22C30/00C22C32/0005C22C32/0026C22C32/0052C23C24/103B22F9/082B22F1/065
Inventor 葛学元范斌王淼辉郭瑞峰杜博睿梁金明
Owner ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH
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