Research and prospect of on-line monitoring technology for laser additive manufacturing

Li, Wanyang; Liu, Wei Wei; Saleheen, Kazi Mojtaba; Liu, Huanqiang; Xia, Yong; Al-Hammadi, Gamal; Li, Xue; Martínek, Radek; Song, Xiaoyan; Zhang, Yingzhong

doi:10.1007/s00170-022-10758-3

Cited by 8 publications

(1 citation statement)

References 95 publications

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“…There are many factors affecting the quality of laser cladding, including the fluctuations of process parameters, the state of the substrate surface, the stability of the laser processing system, the consistency of powders, etc. [6]. However, it is difficult to achieve on-line monitoring of all influencing factors, resulting in the failure to accurately monitor the coating quality.…”

Section: Introductionmentioning

confidence: 99%

Research of On-Line Monitoring Technology Based on Laser Triangulation for Surface Morphology of Extreme High-Speed Laser Cladding Coating

Wang

Guo

et al. 2023

Coatings

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This work aims to develop a novel method for on-line monitoring of coating quality during the Extreme High-speed Laser Cladding (EHLA) process. JG-11 coating was prepared by EHLA, and microstructure, microhardness, corrosion performance, and scratch resistance were investigated. To analyze the influences of fluctuations in processing parameters on coating quality, a single-factor experiment scheme was designed and an on-line monitoring system based on laser triangulation was built. Furthermore, a new forming method for the surface profile of EHLA coating was proposed, and a new comprehensive evaluation index of surface morphology was accordingly designed. Benefitting from the extremely high cooling rate, EHLA JG-11 coating had fine grains, high hardness, and better corrosion resistance and scratch resistance than those of Electroplating Hard Chromium (EHC). The results revealed that the surface morphologies presented different characteristics due to the fluctuations of process parameters, such as high surface flatness, deep pits, small peaks, poor directionality, etc. The comprehensive evaluation index composed of Sa, Ssk, and Str could effectively characterize the surface morphology of EHLA coating, which proved that the monitoring system and evaluation method could realize on-line monitoring of the process parameters during the EHLA process.

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Section: Introductionmentioning

confidence: 99%