In this paper, the selective laser melting (SLM) forming method was combined with the requirement of boiling heat transfer for porous structure to study the forming process and boiling heat transfer characteristics of porous structure of G-surface lattice formed by SLM. 316L stainless steel powder was used to rasterize the G-surface structure. Besides, porosity and surface morphology of G-surface lattice were analyzed. Deionized water was used for boiling heat transfer experiment to study the effect of technological parameters on boiling heat transfer enhancement. On this basis, the bubble escape modes in different stages of boiling heat transfer of G-surface lattice were considered, and the delay of the critical heat flux caused by G-surface lattice was explained. This study provides a useful reference for the design of lattice heat cooling structure.

本文将选择性激光熔融（SLM）形成方法与多孔结构沸腾传热的要求相结合，研究了SLM形成的G表面晶格的多孔结构的形成过程和沸腾传热特性。316L不锈钢粉末用于光栅化G表面结构。此外，分析了G表面晶格的孔隙率和表面形态。用去离子水进行沸腾传热实验，研究工艺参数对增强沸腾传热的影响。在此基础上，考虑了G面晶格沸腾传热的不同阶段的气泡逸出方式，并解释了由G面晶格引起的临界热通量的延迟。