基于响应面分析法的激光熔覆仿真实验教学设计与研究

Design and Research on Virtual Simulation Experimental Teaching of Laser Cladding Based on Response Surface Analysis Method

  • 摘要: 为解决熔覆层易产生裂纹、气孔、变形等问题,该文以G-X5CrNi134马氏体不锈钢为基体,以Stellite 6钴基合金为激光熔覆粉末,通过Design-Expert 13等软件根据前期实验数据建立回归模型,并采用响应面分析方法对创建的数学模型进行分析,获得最优激光熔覆工艺参数为激光功率 2000 W,送粉速率7.34 g/min,扫描速度350 mm/min。通过激光熔覆实验验证在最优参数下制备的Stellite 6钴基涂层与基体之间结合紧密,无气孔和裂纹等缺陷,且宽高比适中。该实验提出了激光熔覆钴基图层技术优化策略,融合参数优化建模与虚拟仿真,兼顾多种数据分析工具使用与实验过程理解,具有较强的跨平台扩展性与工程教学适应性,适用于本科生研究型材料设计实验教学,有助于培养学生创新思维和综合实践能力。

     

    Abstract: To address issues such as cracks, porosity, and deformation that are prone to occur in cladding layers, this article uses G-X5CrNi134 martensitic stainless steel as the substrate and Stellite 6 cobalt-based alloy as the laser cladding powder. Through software such as Design-Expert 13, a regression model is established based on previous experimental data. The created mathematical model is analyzed using response surface analysis, and the optimal laser cladding process parameters are obtained as follows: laser power of 2000 W, powder feeding rate of 7.34 g/min, and scanning speed of 350 mm/min. Laser cladding experiments verify that the Stellite 6 cobalt-based coating prepared under the optimal parameters is tightly bonded to the substrate, free of defects such as porosity and cracks, and has a moderate aspect ratio. This experiment proposes an optimized strategy for cobalt-based coating technology using laser cladding, integrating parameter optimization modeling and virtual simulation. It combines the application of diverse data analysis tools with an in-depth understanding of experimental processes, offering strong cross-platform scalability and adaptability for engineering education. This approach is well-suited for research-oriented materials design experiments in undergraduate teaching, effectively fostering students’innovative thinking and comprehensive practical skills.

     

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