%A SHEN Zhenyu, FU Xiuqing, WANG Qingqing, ZHANG Hongwen, ZHANG Cheng, TAO Yichen, LI Jia, GU Yanqing
%T Test on electrolytic modification of cross hole intersection
%0 Journal Article
%D 2022
%J Acta Aeronautica et Astronautica Sinica
%R 10.7527/S1000-6893.2021.25592
%P 525592-525592
%V 43
%N 4
%U {https://hkxb.buaa.edu.cn/CN/abstract/article_18691.shtml}
%8
%X To improve the fuel efficiency of the engine, prolong the service life of the fuel injection body and reduce the maintenance cost, the electrochemical machining technology and the cathode of the intersecting structure were used to conduct the experimental research on deburring and transition arc modification at the intersection of the cross holes in the fuel injection body. After modification, the radius of the transition arc at the intersecting area was *R*=(2.0±0.2) mm. The mathematical model of electrolytic modification process at the intersection of the cross holes was established. The numerical solution of electrochemical modification process under different machining time and voltage was carried out based on COMSOL. The process test of electrolytic modification process at the intersection of cross holes was carried out, and the transition arc radius obtained from numerical solution and modification test under the same process parameters was compared and analyzed to verify the accuracy of the mathematical model of the modification process. Moreover the change rule of the transition arc radius at the intersection with the processing time and voltage was obtained. The results show that when the machining time is *t*=360 s and the machining voltage is *U*=12 V, and when the machining time is *t*=420 s and the machining voltage is *U*=10 V, the transition arc radius obtained from the numerical solution and the modification test can meet the requirements of the transition arc radius *R*=(2.0±0.2) mm, and the contour of the transition arc is obvious at the intersection of the cross holes after the modification.