采用多片叠合铣刀加工一种具有规则孔隙的表面热功能结构——交错互通微通道网格板(简称网格板)． 通过理论计算得出网格板的孔隙率、体积比表面积、重量比表面积等孔隙特性，并研究孔隙特性随微通道间距、微通道深度以及微通道宽度的变化规律．然后将网格板置于板式换热器中，分析体积流量、孔隙率以及体积比表面积对压降与传热性能的影响． 结果表明:通过调节微通道间距、微通道深度和微通道宽度，孔隙率可以在10． 9% ～88． 0%范围内变化，体积比表面积可以在 2． 89 ～6． 40mm－1 范围内变化;网格板可使换热器的传热性能提升近 3 倍;同等条件下，高孔隙率和大体积比表面积的网格板强
化传热效果较好．

Firstly，a functional surface structure with regular pores for heat transfer，namely cross-connected micro-channel mesh plate (CCMMP)，was designed and fabricated via multi-cutter milling． Secondly，three pore charac-teristic parameters，namely porosity，specific volumetric surface area and specific weight surface area，were theoretically calculated，and the effects of microchannel interval，depth and width on these three parameters were investigated． Then，CCMMPs were applied to a plate heat exchanger to analyze the pressure drop and the heat transfer performance affected by volume flow，porosity and specific volumetric surface area by experiments． The re-sults show that (1) the porosity ranges from 10． 9% to 88． 0% and the specific volumetric surface area ranges from 2．89mm^-1 to 6．40mm^-1 if the interval，depth and width of microchannels are all adjusted correctly; (2) CCMMPs quadruple the heat transfer performance; and (3) high porosity and large specific volumetric surface area are favor-able to heat transfer．