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所属单位：机电学院

发表刊物：JOURNAL OF MATERIALS PROCESSING TECHNOLOGY

关键字：Electrochemical machining Stray current Convex structure Flexible auxiliary electrode mechanism Positive potential difference

摘要：Counter-rotating electrochemical machining (CRECM) is a new ECM technique which can be used to fabricate convex structures on thin-walled revolving parts. During the CRECM process, the non-machined top surface of the convex structure inevitably suffers from stray current attack, resulting in poor machining quality. To reduce the stray currents in CRECM, a flexible auxiliary electrode mechanism has been developed. A positive potential difference is applied between the auxiliary electrode and the anode work piece. The electric field distribution and the simulated convex profiles show that the stray current density can be reduced effectively by using an auxiliary electrode. The magnitudes of the stray current densities on the non-machined area decrease with increasing potential difference. A suitable positive potential difference of 10 V is able to completely eliminate the stray currents from the entire non-machined surface of the convex structure. Experiments have also been conducted to verify the proposed method. It was confirmed that the stray corrosion on the convex surface is significantly reduced and the machining quality is remarkably improved by using a flexible auxiliary electrode mechanism. (C) 2016 Elsevier B.V. All rights reserved.

ISSN号：0924-0136

是否译文：否

发表时间：2017-01-01

合写作者：朱增伟,朱荻,He, Bin,Ge, Yongcheng

通讯作者：王登勇