In forming procedure of the micro grooves in the flat micro-groove heat pipe, the tie rod is often observed to be broken and the multi-tooth cutter is damaged due to the sharp increase of the ploughing-pulling pressure. This paper theoretically analyzes the factors affecting the capillary heat transferring limit of the micro-groove heat pipe, and simulates the machining process using finite element to acquire the best processing parameters: the squeeze angle is 120°, the drawing depth is 0.25mm, and the ploughing-pulling velocity is 100mm/s. Then these parameters are verified by real manufacturing experiments. The experimental results show that the ploughing-pulling pressure of the micro-groove forming process is close to the strength limit of the rod or multi-tooth cutter, and the process makes little swarf during work. Thus, only using the appropriate machine tool parameters, forming parameters and forming methods can make the wicking structure of flat micro-groove micro-heat pipe with the best heat transferring performance.

在扁平的微槽热管中的微槽的形成过程中，由于拉拔压力的急剧增加，经常观察到拉杆断裂并且多齿刀具被损坏。本文从理论上分析了影响微槽热管毛细管传热极限的因素，并通过有限元模拟加工过程，以获得最佳加工参数：挤压角为120°，拉深深度为0.25mm，牵引速度为100mm / s。然后通过实际制造实验验证这些参数。实验结果表明，微槽成型工艺的拉拔压力接近杆或多齿刀具的强度极限，在工作过程中切屑很少。从而，