ECM 变截面孔的流场模拟和实验研究

Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019) Pub Date : 1900-01-01 DOI:10.2991/pntim-19.2019.56

Zhai Kaige, T. Lin, Zhang Xinyun, Pan Yonghong

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引用次数: 0

摘要

为了解决变截面孔 ECM（电化学加工）易短路、流态大的问题，提出了一种旋转流场电化学加工方法。本文建立了变截面孔的间隙流场模型，模拟并分析了不同斜角液孔的流场。仿真结果表明，设计出液孔斜角为 45°的旋转流场，可以改善加工间隙中的电解液分布，大大减少低速区。在加工电压 10V、电解液入口压力 1.6MPa、电解液温度 30℃、阴极进给速度 5mm/min 的条件下，采用优化后的阴极对变截面孔进行了电化学加工。结果表明，间隙流场模拟可以优化阴极结构，缩短阴极设计周期，降低实验成本。关键词-可变截面孔；ECM；流场；技术实验

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Flow Field Simulation and Experiment Study of ECM Variable Cross-Sectional Hole

In order to solve the problem that ECM (electrochemical machining) of variable cross-sectional hole is easy to short circuit and the flow pattern is large, a rotating flow field electrochemical machining method is proposed. In this paper, the gap flow field model of variable cross-sectional hole is established, the flow field with different oblique angle of liquid hole is simulated and analyzed. The simulation results show that designing rotating flow field with the outlet hole oblique angle of 45° can improve the electrolyte distribution in machining gap and greatly reduce the low speed zone. Under the conditions of processing voltage 10V, electrolyte inlet pressure 1.6MPa, electrolyte temperature 30°C and cathode feed speed 5mm/min, the electrochemical machining of variable cross-sectional hole was carried out by using the optimized cathode. The results show that the gap flow field simulation can optimize the cathode structure, shorten cathode design cycle and reduce experiment cost. Keywords-Variable Cross-Sectional Hole; ECM; Flow Field; Technological Experiment

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Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)

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