聚氨酯软模成形纯钛薄板微流道结构的实验研究

徐勇; 陈法垲; 张驰; 解文龙; 张士宏; 陈连生; 田亚强

doi:10.3969/j.issn.1674-6457.2026.02.020

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精密成形工程 ›› 2026, Vol. 18 ›› Issue (2) : 218-225. DOI: 10.3969/j.issn.1674-6457.2026.02.020

轻合金成形

聚氨酯软模成形纯钛薄板微流道结构的实验研究

徐勇^1,2,*, 陈法垲¹, 张驰², 解文龙², 张士宏², 陈连生¹, 田亚强¹

作者信息 +

Experimental Study on the Microchannel Structure of the Pure Titanium Sheet Fabricated by Polyurethane Forming

XU Yong^1,2,*, CHEN Fakai¹, ZHANG Chi², XIE Wenlong², ZHANG Shihong², CHEN Liansheng¹, TIAN Yaqiang¹

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文章历史 +

摘要

目的为了开发适用于纯钛双极板的制造技术,研究了聚氨酯软模成形工艺参数对纯钛薄板细微且密集的微流道结构成形质量的影响。方法以0.1 mm的TA1纯钛作为实验材料,通过改变聚氨酯软模成形中设备压力、聚氨酯厚度和硬度进行成形实验,对比分析不同参数下微流道成形深度及壁厚分布的差异。结果微流道成形深度随着设备压力、聚氨酯厚度和硬度的提升而增加,设备压力影响较大,当设备压力从10 MPa提升到50 MPa时,微流道深度从142.7 μm增加到348 μm。在聚氨酯软模成形中,微流道整体减薄最大的2个区域为上、下圆角区。当设备压力、聚氨酯厚度一致且深度达到预期深度时,硬度为75 Shore A的聚氨酯微流道平均壁厚减薄率为23.08%,而85 Shore A的聚氨酯微流道平均壁厚减薄率为9.84%。结论通过对设备压力、聚氨酯硬度和厚度进行工艺参数调节,可有效抑制纯钛薄板的局部减薄,提高微流道的成形质量。

Abstract

To develop manufacturing technologies suitable for pure titanium bipolar sheets, the work aims to investigate the effect of polyurethane soft mould forming process parameters on the forming quality of the fine and dense microchannel structures in pure titanium sheets. With 0.1 mm thick TA1 pure titanium as the experimental material, forming experiments were conducted by varying the equipment pressure, polyurethane thickness, and hardness during the polyurethane soft mould forming process. The differences in microchannel forming depth and wall thickness distribution under different parameters were compared and analyzed. The microchannel forming depth increased with increases in equipment pressure, polyurethane thickness, and hardness, with equipment pressure having the greatest impact. When the equipment pressure increased from 10 MPa to 50 MPa, the microchannel depth increased from 142.7 μm to 348 μm. In polyurethane soft mould forming, the two regions with the greatest overall thinning of the microchannels were the upper and lower rounded corners. When the equipment pressure and polyurethane thickness were consistent and the depth reached the expected depth, the average wall thickness reduction rate of microchannels under polyurethane with a hardness of 75 Shore A was 23.08%, while under polyurethane with a hardness of 85 Shore A, the average wall thickness reduction rate was 9.84%. By adjusting process parameters such as equipment pressure, polyurethane hardness, and thickness, local thinning of pure titanium sheets can be effectively suppressed, thereby improving the forming quality of microchannels.

导出引用

徐勇, 陈法垲, 张驰, 解文龙, 张士宏, 陈连生, 田亚强. 聚氨酯软模成形纯钛薄板微流道结构的实验研究[J]. 精密成形工程. 2026, 18(2): 218-225 https://doi.org/10.3969/j.issn.1674-6457.2026.02.020

XU Yong, CHEN Fakai, ZHANG Chi, XIE Wenlong, ZHANG Shihong, CHEN Liansheng, TIAN Yaqiang. Experimental Study on the Microchannel Structure of the Pure Titanium Sheet Fabricated by Polyurethane Forming[J]. Journal of Netshape Forming Engineering. 2026, 18(2): 218-225 https://doi.org/10.3969/j.issn.1674-6457.2026.02.020

中图分类号： TG386.1

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