Experiment and modeling into drilling of micro-hole on TC4 by electrochemical jet machining

• Published in: E3S Web of Conferences Vol. 268; p. 1071
• Main Authors: Song, Dongxiao, Xiong, Liangcai, Long, Yuhong, Shi, Tielin
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Les Ulis EDP Sciences 01.01.2021
• Subjects: Directivity; Drilling; electrochemical jet machining; Electrochemistry; Machine shops; Machining; Mathematical analysis; Mathematical models; micro-hole; Microholes; Prediction models; profile prediction; response surface analysis; Response surface methodology; Surface analysis (chemical); tc4; Titanium base alloys
• ISSN: 2267-1242; 2555-0403; 2267-1242
• DOI: 10.1051/e3sconf/202126801071

This paper studied the rule of micro-hole in electrochemical jet machining (EJM) of TC4 alloy and established the mathematical model of machining process and predicted the machining profile. Considering the influence of machining gap and machining time, orthogonal experiment was designed. This paper established the mathematical model of the electrochemical jet machining process of TC4 alloy based on the response surface analysis (RSA) method. The results indicate that the electrochemical jet can improve the directivity of machining, reducing the machining gap can improve the machining efficiency, but the jet will cause secondary corrosion and abrupt change of current at the edge of inlet. The mathematical model based on response surface analysis is accurate after variance test. The experimental results show that the average error between the established prediction model of machining depth and the actual value is 2.32%, and the average error of the prediction model of inlet radius is 2.18%.