极间自混氧改善钛合金电火花加工特性研究

doi:10.7527/S1000-6893.2013.0121

Abstract

Abstract:

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.

Key words: self-mixed oxygen, titanium alloys, electrical discharge machining, material removal rate, electrode wearing rate, surface quality

CLC Number:

WANG Xiangzhi, LIU Zhidong, XUE Rongyuan, TIAN Zongjun, HUANG Yinhui. Research on Self-mixed Oxygen in Discharge Gap to Improve the Processing Characteristics of Titanium Alloy Electrical Discharge Machining[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013, 34(10): 2419-2426.

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Research on Self-mixed Oxygen in Discharge Gap to Improve the Processing Characteristics of Titanium Alloy Electrical Discharge Machining

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