极间自混氧改善钛合金电火花加工特性研究
收稿日期: 2012-12-26
修回日期: 2013-02-02
网络出版日期: 2013-02-26
基金资助
航空科学基金(20100343004)
Research on Self-mixed Oxygen in Discharge Gap to Improve the Processing Characteristics of Titanium Alloy Electrical Discharge Machining
Received date: 2012-12-26
Revised date: 2013-02-02
Online published: 2013-02-26
Supported by
Aeronautical Science Foundation of China (20100343004)
王祥志 , 刘志东 , 薛荣媛 , 田宗军 , 黄因慧 . 极间自混氧改善钛合金电火花加工特性研究[J]. 航空学报, 2013 , 34(10) : 2419 -2426 . DOI: 10.7527/S1000-6893.2013.0121
In this paper, a method based on self-mixed oxygen in a discharge gap is proposed for titanium alloy electrical discharge machining. In traditional mixed-air electrical discharge machining (EDM), it is difficult for the gas to get into the discharge gap. To solve the problem, hydrogen peroxide is added into distilled water as dielectric to produce oxygen automatically during the machining process, which forms a new type of EDM based on self-mixed oxygen. The influence of self-mixed oxygen on material removal rate (MRR), electrode wearing rate (EWR) and surface quality (SQ) is studied. Results show that when the content of hydrogen peroxide grows, MRR, EWR and SQ all present a tendency of first increasing and then decreasing. And the electrical conductivity of the dielectric can be taken as a basis when measuring the content of hydrogen peroxide.
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