摘要
为了研究石油无磁钻具表面激光熔覆镍基合金的涂层形貌和温度场的关系,建立了基于Ansys-Workbench有限元的316L不锈钢基体表面激光熔覆Ni60合金的温度场仿真模型,模拟不同工艺参数下316L不锈钢基体表面激光熔覆Ni60合金的温度场变化规律,研究了不同激光功率、轴转周期、光斑半径对熔覆层与基体结合区域温度、熔覆层边缘温度、基体熔池深度、重熔区的影响。结果表明:在激光功率1400W,轴转周期60r/min,光斑半径1.5 mm的条件下,激光熔覆的重熔区深度为0.22 mm,冶金结合效果最佳。采用实验验证了最佳工艺参数下单层单道熔覆层表面形貌分布与有限元仿真模拟的熔池基本一致,证明仿真模型较为准确可靠的反映激光熔覆过程中的温度场分布。
To study the relationship between the surface morphology and temperature field of oil-free magnetic drill coating with laser-melted nickel-based alloy,a finite element simulation model of temperature field on the 316L stainless steel substrate surface laser-melted with Ni60 alloy was established based on ANSYS-Workbench.The temperature field changes under different process parameters were simulated for the 316L stainless steel substrate surface laser-melted with Ni60 alloy,and the effects of different laser power,rotational period,and spot diameter on the temperature of the bonding region between the overlay and the substrate,the edge temperature of the overlay,the depth of the substrate melting pool,and the dilution rate were studied.The results show that under the conditions of laser power of 1400 W,rotational period of 18 t and spot diameter of 1.5 mm,the depth of remelting zone(RMZ)is 0.22 mm,and the metallurgical bonding effect is best.The experimental verification method proves that the single-layer single-pass overlay surface morphology distribution is basically consistent with the molten pool simulated by finite element simulation under the optimal process parameters,which proves that the simulation model can accurately reflect the temperature field distribution in the laser cladding process.
作者
韩飞燕
李林林
郭云云
刘丽兰
豆卫涛
Han Feiyan;Li Linlin;Guo Yunyun;Liu Lilan;Dou Weitao(Xi’an Aeronautical Polytechnic Institute,School of Aeronautical Manufacturing Engineering,Xi’an 710089,China;The First Oil Production Plant of Changqing Oilfield Branch Company,Xi’an 71600,China;School of Mechanical and Instrumental Engineering,Xi’an University of Technology,Xi’an 710048,China)
出处
《电镀与精饰》
北大核心
2025年第7期16-22,共7页
Plating & Finishing
基金
国家自然科学基金资助项目(42472381)。
关键词
激光熔覆
温度场
数值模拟
表面形貌
laser cladding
temperature field
numerical simulation
surface profile
作者简介
韩飞燕(1989-),女,硕士,讲师,研究方向为激光熔覆技术,email:454695553@qq.com;通信作者:刘丽兰,博士,副教授,email:liulilans@163.com。
