{"title":"基于正交实验和机器学习的 Q345 铁基合金激光熔覆工艺快速优化","authors":"Yi Zhang , Peikang Bai , Zhonghua Li , Jie Zhang","doi":"10.1016/j.optlastec.2024.112086","DOIUrl":null,"url":null,"abstract":"<div><div>The properties of laser cladding coatings are closely correlated with process parameters. The laser power (P), scanning speed (V<sub>S</sub>), and powder feeding rate(V<sub>F</sub>) were optimized to enhance the comprehensive properties of laser cladding iron-based alloy single coating on Q345, with a focus on achieving targets such as dilution rate (η), aspect ratio (W/H), and hardness (H<sub>D</sub>) of single coating. Firstly, the impact of process parameters on coating properties were analyzed through orthogonal experiments. Subsequently, prediction models between process parameters and coating properties were established by using back propagation neural network(BPNN), which optimized by particle swarm optimization(PSO) and Genetic Algorithm(GA). Finally, non-dominated sorting genetic algorithm II(NSGA-II) was employed to optimize the process parameters, and the optimized results were verified and analyzed. The findings indicate that laser power is the primary factor influencing dilution rate and hardness, while powder feeding rate primarily affects aspect ratio. The optimized process parameters include a laser power of 934 W, scanning speed of 352 mm/min, powder feeding rate of 0.64r/min, corresponding aspect ratio of 3.06, hardness of 613HV, dilution rate of 0.33. There were no obvious defects in the coating and the coating hardness was three times higher than that of the substrate. The optimization results of orthogonal experiments are constrained by the process range, fortunately, the utilization of machine learning optimization methods can effectively address these limitations and avoid the re-experiment due to improper settings in orthogonal experiments. It offers a rapid and efficient method for optimizing laser cladding process parameters.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"182 ","pages":"Article 112086"},"PeriodicalIF":4.6000,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Rapid optimization of iron-based alloy laser cladding process based on orthogonal experiment and machine learning for Q345\",\"authors\":\"Yi Zhang , Peikang Bai , Zhonghua Li , Jie Zhang\",\"doi\":\"10.1016/j.optlastec.2024.112086\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The properties of laser cladding coatings are closely correlated with process parameters. The laser power (P), scanning speed (V<sub>S</sub>), and powder feeding rate(V<sub>F</sub>) were optimized to enhance the comprehensive properties of laser cladding iron-based alloy single coating on Q345, with a focus on achieving targets such as dilution rate (η), aspect ratio (W/H), and hardness (H<sub>D</sub>) of single coating. Firstly, the impact of process parameters on coating properties were analyzed through orthogonal experiments. Subsequently, prediction models between process parameters and coating properties were established by using back propagation neural network(BPNN), which optimized by particle swarm optimization(PSO) and Genetic Algorithm(GA). Finally, non-dominated sorting genetic algorithm II(NSGA-II) was employed to optimize the process parameters, and the optimized results were verified and analyzed. The findings indicate that laser power is the primary factor influencing dilution rate and hardness, while powder feeding rate primarily affects aspect ratio. The optimized process parameters include a laser power of 934 W, scanning speed of 352 mm/min, powder feeding rate of 0.64r/min, corresponding aspect ratio of 3.06, hardness of 613HV, dilution rate of 0.33. There were no obvious defects in the coating and the coating hardness was three times higher than that of the substrate. The optimization results of orthogonal experiments are constrained by the process range, fortunately, the utilization of machine learning optimization methods can effectively address these limitations and avoid the re-experiment due to improper settings in orthogonal experiments. It offers a rapid and efficient method for optimizing laser cladding process parameters.</div></div>\",\"PeriodicalId\":19511,\"journal\":{\"name\":\"Optics and Laser Technology\",\"volume\":\"182 \",\"pages\":\"Article 112086\"},\"PeriodicalIF\":4.6000,\"publicationDate\":\"2024-11-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Optics and Laser Technology\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0030399224015445\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"OPTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics and Laser Technology","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0030399224015445","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OPTICS","Score":null,"Total":0}
Rapid optimization of iron-based alloy laser cladding process based on orthogonal experiment and machine learning for Q345
The properties of laser cladding coatings are closely correlated with process parameters. The laser power (P), scanning speed (VS), and powder feeding rate(VF) were optimized to enhance the comprehensive properties of laser cladding iron-based alloy single coating on Q345, with a focus on achieving targets such as dilution rate (η), aspect ratio (W/H), and hardness (HD) of single coating. Firstly, the impact of process parameters on coating properties were analyzed through orthogonal experiments. Subsequently, prediction models between process parameters and coating properties were established by using back propagation neural network(BPNN), which optimized by particle swarm optimization(PSO) and Genetic Algorithm(GA). Finally, non-dominated sorting genetic algorithm II(NSGA-II) was employed to optimize the process parameters, and the optimized results were verified and analyzed. The findings indicate that laser power is the primary factor influencing dilution rate and hardness, while powder feeding rate primarily affects aspect ratio. The optimized process parameters include a laser power of 934 W, scanning speed of 352 mm/min, powder feeding rate of 0.64r/min, corresponding aspect ratio of 3.06, hardness of 613HV, dilution rate of 0.33. There were no obvious defects in the coating and the coating hardness was three times higher than that of the substrate. The optimization results of orthogonal experiments are constrained by the process range, fortunately, the utilization of machine learning optimization methods can effectively address these limitations and avoid the re-experiment due to improper settings in orthogonal experiments. It offers a rapid and efficient method for optimizing laser cladding process parameters.
期刊介绍:
Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication.
The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas:
•development in all types of lasers
•developments in optoelectronic devices and photonics
•developments in new photonics and optical concepts
•developments in conventional optics, optical instruments and components
•techniques of optical metrology, including interferometry and optical fibre sensors
•LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow
•applications of lasers to materials processing, optical NDT display (including holography) and optical communication
•research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume)
•developments in optical computing and optical information processing
•developments in new optical materials
•developments in new optical characterization methods and techniques
•developments in quantum optics
•developments in light assisted micro and nanofabrication methods and techniques
•developments in nanophotonics and biophotonics
•developments in imaging processing and systems