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TB6钛合金由于具有优越的性能,广泛地用于航空航天领域。然而从大余量的TB6钛合金锻铸件毛坯加工成复杂结构的零件,其加工效率低,刀具和机床成本高,造成了极大的浪费。为解决这一问题,提出了一种利用薄型中空电极进行快速大余量去除的电解加工(ECM)方法,即将零件与多余材料切割分离,有望较大程度提高加工效率,降低加工成本。为改善电解加工流场特性,提高加工精度,对电极施加振动,并对薄型中空电极的振动切割进行了建模分析和试验研究。试验结果表明,合适的振动幅值和频率(A=0.05mm,f=50Hz)可以使得各处电解液电导率趋于一致,从而提高加工的精度、稳定性和效率。复杂结构件的成功切割证明了薄型中空电极振动电解切割加工技术具有一定的适用性。
TB6 titanium alloy is widely used in the aerospace field due to its superior performance. However, the processing of rough parts of TB6 titanium alloy forging castings into complex structures has great processing efficiency, high cost of tools and machine tools, resulting in great waste. In order to solve this problem, an ECM method using a thin hollow electrode for fast and large allowance removal is proposed. That is, cutting and separating the parts and the excess material is expected to greatly improve the processing efficiency and reduce the processing cost. In order to improve the flow field characteristics of electrolytic machining, improve the machining accuracy, apply vibration to the electrodes, and make modeling analysis and experimental research on vibration cutting of thin hollow electrodes. The experimental results show that the appropriate vibration amplitude and frequency (A = 0.05mm, f = 50Hz) can make the conductivity of the electrolyte tend to be consistent everywhere to improve the processing accuracy, stability and efficiency. The successful cutting of complex structural parts proves that the thin-type hollow electrode vibration electrolysis cutting technology has certain applicability.