Ultra-high-speed laser cladding iron-based metal powder, and preparation method and application thereof

A laser cladding and iron-based metal technology, which is applied in laser welding equipment, metal processing equipment, metal material coating technology, etc., can solve the problems of restricting the popularization and application of laser cladding technology, low energy utilization rate, and slow cladding rate, etc. problems, to achieve the effect of smooth surface, improved service life, and good powder aggregation

Active Publication Date: 2020-04-28
中机新材料研究院(郑州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional laser cladding technology, because the laser energy mainly acts on the surface of the substrate, the powder temperature is lower than the melting point, the heat loss is large, the energy utilization rate is low, the cladding rate is slow, and the heat-affected zone is large, which seriously restricts the laser cladding technology. Promoted application of

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  • Ultra-high-speed laser cladding iron-based metal powder, and preparation method and application thereof
  • Ultra-high-speed laser cladding iron-based metal powder, and preparation method and application thereof
  • Ultra-high-speed laser cladding iron-based metal powder, and preparation method and application thereof

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Embodiment 1

[0033] Preferably, a powder preparation method is provided, which is characterized in that the method is as follows: raw material components are alloyed and proportioned, and then vacuum smelted, and the vacuum degree of the smelting chamber is 10 -1 ~10 -2 Pa, using gas atomization method to make powder, powder spraying gas argon pressure 1.2~3.8MPa, particle size screening after collecting powder, screening metal powder in the particle size range of 15~65μm, to obtain iron-based metal for ultra-high-speed laser cladding powder.

[0034] Preferably, an iron-based metal powder is provided, the mass fraction of each element is: C 0.8%, Cr 19.0%, Ni 5.65%, Mn 3.2%, Mo 1.2%, Ti 5.0%, B 1.2%, N 0.09 %, Si≤0.5%, P≤0.030%, S≤0.030%, the balance is Fe and unavoidable impurities.

[0035] The particle size of the metal powder is: 15 ~ 65μm, fluidity: 18s / 50g, sphericity ≥ 91%, D 50 = 32 μm.

[0036] Preferably, the powder has an oxygen content of 160 ppm. Hollow flour rate <1%. ...

Embodiment 2

[0044] Preferably, a powder preparation method is provided, which is characterized in that the method is as follows: raw material components are alloyed and proportioned, and then vacuum smelted, and the vacuum degree of the smelting chamber is 10 -1 ~10 -2 Pa, adopt the gas atomization method to make powder, the argon gas pressure of the powder spraying gas is 1.2~3.8MPa, after collecting the powder, carry out particle size screening, and screen the metal powder with a particle size range of 15~65μm to obtain the iron-based metal for ultra-high-speed laser cladding powder.

[0045]Preferably, an iron-based metal powder is provided, the mass fraction of each element is: C 0.7%, Cr 18.0%, Ni 5.8%, Mn 3.1%, Mo 1.4%, Ti 5.5%, B 1.2%, N 0.09 %, Si≤0.5%, P≤0.030%, S≤0.030%, the balance is Fe and unavoidable impurities.

[0046] The particle size of the metal powder is: 15~65μm, fluidity: 18s / 50g, sphericity ≥ 95%, D 50 = 34 μm.

[0047] Preferably, the powder has an oxygen cont...

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Abstract

The invention provides ultra-high-speed laser cladding iron-based metal powder, and a preparation method and application thereof. The iron-based metal powder comprises the following chemical components of, in percentage by mass, 0.6 %-1.0% of C, 17.0 %-20.0 % of Cr, 5.0 %-6.5 % of Ni, 2.0 %-4.0 % of Mn, 1.0 %-1.5 % of Mo, 4.0 %-6.0 % of Ti, 1.0 %-1.5 % of B, 0.08 %-0.15 % of N, less than or equalto 0.5% of Si, less than or equal to 0.030% of P, less than or equal to 0.030% of S and the balance Fe and inevitable impurities. According to the metal powder, the particle size is 15-65 microns andthe fluidity is 16-20 s/50g. The invention further provides the application method of the metal powder. According to the application method, by adopting an super-high-speed laser cladding technology,and matching different processes, a shaft part base body surface is strengthened and repaired.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to an iron-based metal powder for ultra-high-speed laser cladding, its preparation method and its application. Background technique [0002] Laser cladding technology is a surface strengthening process technology, which refers to adding selected coating materials on the surface of the substrate through different filler methods, and using a high-power-density laser beam to simultaneously melt and condense the extremely thin layer on the surface of the substrate. And after rapid solidification, a surface coating with extremely low dilution and metallurgical bonding with the substrate is formed, thereby significantly improving the wear resistance, corrosion resistance, heat resistance, and oxidation resistance of the base surface. In the traditional laser cladding technology, because the laser energy mainly acts on the surface of the substrate, the powder temperature is lower...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C38/58C22C38/44C22C38/50C22C38/54C22C38/02B22F9/08B22F1/05B22F1/065
CPCC23C24/103C22C38/58C22C38/44C22C38/50C22C38/54C22C38/001C22C38/02B22F9/082B22F1/05B22F1/065C22C38/002C22C33/0285B22F2009/0824B22F2009/0848B22F2009/0836B22F7/062B23K35/0244B23K35/308B23K26/34B22F2009/0832B22F2304/10B22F2301/35
Inventor 王淼辉葛学元杜博睿申博文徐一斐肖宁郝胜
Owner 中机新材料研究院(郑州)有限公司
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