薄型中空电极振动电解切割TB6钛合金

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。

Electrochemical cutting of titanium alloy TB6 with vibration by thin hollow cathode

Titanium alloy TB6 has been widely used in the field of aerospace because of its excellent properties.However,the fabricating of complex structure components from titanium alloy TB6 forging-casting fittings with large cutting allowance is inefficient and costly in cutting tool and machine tool to cause great waste.In order to solve this problem,one type of Elec trochemical Machining (ECM) for rapidly removing large allowance by thin hollow cathode is proposed.The spare material is cut and separated from the blank,so as to improve machining efficiency and reduce the cost.In order to improve the flow field characteristics of ECM and machining accuracy,the vibration of electrode is applied,the model for ECM with vibration is built,and experimental research is carried out.The experimental results show that the conductivity of electrolyte in the whole area tends to be consistent with the appropriate vibration amplitude and frequency (A =0.05 mm,f =50 Hz),so that the machining accuracy,stability and efficiency can be improved.The applicability of electrochemical cutting with vibration by thin hollow cathode is proved by successful cutting of complex structure components.