铁基非晶纳米晶磁芯激光切割温度场仿真研究  

Simulation Research on Temperature Field of Laser Cutting of Fe-based Amorphous Magnetic Cores

作　　者：黄宥伦 杨元政[1] HUANG Youlun;YANG Yuanzheng(School of Materials and Energy,Guangdong University of Technology,Guangzhou 510006,China)

机构地区：[1]广东工业大学材料与能源学院,广东广州510006

出　　处：《热加工工艺》2024年第9期45-49,共5页Hot Working Technology

基　　金：国家自然科学基金资助项目(5207010885)。

摘　　要：为了明晰FeSiBCuNb非晶纳米晶磁芯激光切割过程的温度分布,采用熔融凝固模型、多相流模型,以及热源半径沿深度衰减的旋转体热源,在Fluent软件中通过生死单元法实现了激光切割的温度场模拟,得到了熔融切缝形貌。研究了激光功率和切割速度等工艺参数对切缝宽度和热影响区厚度的影响。结果表明:在厚度方向上磁芯被完全切开时,切缝宽度、热影响区厚度呈现上下窄、中间宽的形貌。随激光功率增大或切割速度减小,切缝宽度整体增大,厚度方向上切缝宽度更加不均匀。In order to clarify the temperature field of laser cutting process of FeSiBCuNb amorphous nanocrystalline cores,the melt-solidification model,the multiphase flow model and the rotating body heat source whose radius is attenuated along the depth were used to simulate the three-dimensional temperature field of laser cutting in Fluent software with the life and death unit method.The influence of process parameters such as laser power and cutting speed on the cutting seam width and the thickness of thermal affected zone was studied.The results show that when the magnetic core is cut completely in thickness direction,the cutting seam width and the thickness of thermal affected zone show the morphology of narrow in upper,lower ends,and wide in middle part.With the increase of laser power or the decrease of cutting speed,the cutting seam width increases overall,and the cutting seamwidth in the thickness direction is more uneven.

关 键 词：铁基非晶纳米晶磁芯 激光切割 温度场 切缝 热影响区 

分 类 号：TG485[金属学及工艺—焊接] TG132.27[一般工业技术—材料科学与工程]