Method and device for regulating and controlling performance of laser cladding wear-resistant coating containing multiple strengthening phases

By accurately controlling the powder feeding gas flow rate and powder mixing strategy in laser cladding technology, the instability of composite powder content is solved, and the uniformity and stability of the cladding layer structure and performance with high hardness and high wear resistance are achieved.

CN119663276APending Publication Date: 2025-03-21NAT INST CORP OF ADDITIVE MFG XIAN
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Patent Information

Application Number
CN202411941433.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-26
Publication Date
2025-03-21

AI Technical Summary

Technical Problem

When the existing laser cladding technology prepares metal-based composite wear-resistant protective layer, it is difficult to ensure the stability of the composite powder content, resulting in uneven structure and performance of the cladding layer.

Method used

By accurately controlling the powder feeding gas flow of different types of powders, adjusting the powder feeding strategy based on the density, ease of decomposition and structure of the powder particles, ensuring the proportional stability of each strengthening phase powder particle during the mixing and transportation process, and uniformly mixing in the powder feeding nozzle.

Benefits of technology

The high hardness and high wear resistance of cladding layer structure and performance control is achieved, and the settlement of high-density particles and the floating of low-density particles are avoided, ensuring the uniformity and performance stability of the cladding layer.

✦ Generated by Eureka AI based on patent content.
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Abstract

The invention discloses a method and device for regulating and controlling the performance of a laser cladding wear-resistant coating containing multiple strengthening phases, and belongs to the technical field of laser cladding. The regulation and control method comprises the steps that the corresponding relation between the rotating speed and the powder feeding amount of each powder feeding unit is obtained, and the rotating speed of the powder feeding unit corresponding to each strengthening phase powder particle is regulated based on the preset powder feeding amount of each strengthening phase powder particle in the wear-resistant coating; the powder feeding gas flow is adjusted based on the density, the decomposability and the powder structure of each strengthening phase powder particle; the strengthening phase powder particles enter a powder feeding nozzle through a plurality of powder feeding units at the corresponding powder feeding air flow and are mixed at the outlet focus of the powder feeding nozzle; and the uniformly mixed strengthening phase powder particles are subjected to laser cladding, and the wear-resistant coating is prepared. According to the method and the device, the powder feeding gas flow of different types of powder is precisely regulated and controlled in a targeted manner, so that regulation and control of the structure and the performance of the high-hardness and high-wear-resistance cladding layer containing multiple strengthening phases are realized.
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