电加工与模具

针对整体叶盘叶栅通道电解加工，提出了一种新型带有增液槽的电解液流动模式，开展了传统流场与带增液槽流场的仿真试验对比。仿真结果表明，带增液槽的流场在加工端面有更高、更稳定的电解液流速。试验结果表明，传统流场加工轮毂面缺液处的表面粗糙度为Ra0.6～0.9μm，而采用增液槽流场加工则为Ra0.3μm左右，且加工过程电流平稳，无短路现象，叶栅通道余量差优于传统流场，表明设计增液槽流场可以提高整体叶盘叶栅通道的加工质量。

Aimed at the electrochemical machining of the blisk's cascade channel,a new type of liquid-increasing groove flow field pattern was proposed,and simulation and experiment comparisons between the traditional flow field and the liquid-increasing groove flow field was conducted. The simulation result showed that the flow field with the liquid-increasing groove had a more stable and higher flow velocity at the machining surface. The experiment result indicated that the roughness of the hub surface with liquid deficiency in traditional flow field machining was Ra0.6 ～0.9 μm,while the roughness processed with the liquid-increasing groove was about Ra0.3 μm at the same position.Moreover,the current was stable during processing with the liquid-increasing groove at the same feed rate without short circuits,and the residual thickness deviation of the cascade channel was better than traditional flow field,indicating that the new type of liquid-increasing groove flow field can improve the machining quality of the blisk's cascade channel and further improve the machining efficiency.