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The Latest Research Progress of Extreme High-speed Laser Material Deposition:Key Technical Features and Advantages, Equipment Development and Technical Parameters
LIU Chunquan, XIONG Fen, PENG Longsheng, HUANG Wei, LIN Yinghua
Materials Reports
2024, 38 (17):
23020075-19.
DOI: 10.11896/cldb.23020075
Extreme high-speed laser material deposition technology is a newly developed surface coating technology in recent years. The essence is that by changing the melting position of the powder, the powder intersects with the laser above the workpiece and melting occurs, and then uniformly coated on the surface of the workpiece, thus featuring high quality and efficiency, green and low cost, high quality and adaptability, low heat input and low laser power, low dilution rate and high performance. Firstly, it briefly introduces the key technology features and technical advantages of extreme high-speed laser material deposition, the development status of ultra-high-speed laser cladding equipment at home and abroad; secondly, the key technical parameters such as melting material, laser power, lap rate, spot diameter, melting speed, powder feeding volume and powder feeding pressure, which affect the final structure and properties of coatings prepared by ultra-high speed laser melting, are highlighted with the latest research results; finally, the quality inspection parameters of coatings prepared by ultra-high speed laser melting are introduced in detail, including the melting effect of melting layer thickness, bond strength, porosity, dilution rate, surface roughness, hardness, wear resistance and corrosion resistance, etc.. By summarizing the characteristics, advantages and key technical parameters of extreme high-speed laser material deposition technology, with a view to providing reference and guidance for further improvement and enhancement of extreme high-speed laser material deposition technology and more progress in equipment development.
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