3D打印点阵相变冷板综合性能研究  

Study on Comprehensive Characteristics of a 3D Printing Phase Change Material Based Cold-plate with Lattice-frame

作　　者：雷新鹏 张希安 张柳[1] 周吉[1] 徐计元[1] LEI Xinpeng;ZHANG Xi’an;ZHANG Liu;ZHOU Ji;XU Jiyuan(Nanjing Research Institute of Electronics Technology,Nanjing 210039,China)

机构地区：[1]南京电子技术研究所,江苏南京210039

出　　处：《电子机械工程》2023年第2期42-45,64,共5页Electro-Mechanical Engineering

摘　　要：3D打印技术为冷板的设计和生产提供了新的可能性。文中基于激光选区熔化(Selective Laser Melting,SLM)技术设计了一种点阵填充内部腔体的相变冷板。为验证点阵相变冷板的储热性能和力学性能,首先通过数值仿真,研究了4种不同尺度、不同形式的点阵结构对储热性能的影响规律,并选出了最佳的点阵结构;然后采用SLM技术成形了试验件;最后通过升温试验,对比了不同热耗下点阵冷板与传统冷板的储热性能差异,通过随机振动试验和冲击试验,研究了点阵冷板的力学性能。结果表明:在不同形式的点阵结构中,4 mm十二边形点阵具有最好的储热性能;相比于传统冷板,点阵冷板可减重13.8%,灌注石蜡增加了12.2%;点阵冷板有更好的储热性能,总热耗为160 W时,升温至105.3℃,点阵冷板可延后6.8%。The 3D printing technology offers new possibilities for the design and production of cold-plate.Based on selective laser melting(SLM)technology,a cold-plate with lattice-frame is designed in this paper.To verify the mechanical properties and heat transfer performance of the cold-plate,firstly,the influence of 4 types of lattice-frames with different scales and different structure on heat transfer performance is studied by numerical simulation and the optimal lattice-frame structure is determined.Then the test prototype is designed by SLM technology.Finally,the heat transfer performance difference between cold-plate with lattice-frame and traditional cold-plate under different heat consumption is compared by experiment.The mechanical properties of cold-plate with lattice-frame are studied by random vibration test and impact test,too.The results show that the lattice-frame material with 4 mm 12-edge shape has the best heat transfer performance.Compared with the traditional cold-plate,the cold-plate with lattice-frame is 13.8%lighter and it can pour 12.2%more paraffn.The cold-plate with lattice-frame has better heat transfer performance and warms up more slowly than traditional cold-plate while total thermal power is 160 W.Total time to heat the cold-plate with lattice-frame to 105.3℃ is 6.8%longer than that of the traditional cold-plate.

关 键 词：3D打印 激光选区熔化 点阵结构 相变冷板 

分 类 号：TG156[金属学及工艺—热处理]