航空学报 > 2022, Vol. 43 Issue (4): 525592-525592   doi: 10.7527/S1000-6893.2021.25592

交叉孔相贯处电解修形试验

沈振宇1, 傅秀清1, 王清清2, 张宏文3, 张诚1, 陶益琛1, 李佳1, 谷艳清3   

  1. 1. 南京农业大学 工学院, 南京 210031;
    2. 南京航空航天大学 机电学院, 南京 210016;
    3. 石河子大学 机械电气工程学院, 石河子 832003
  • 收稿日期:2021-03-29 修回日期:2021-04-22 发布日期:2021-07-09
  • 通讯作者: 傅秀清 E-mail:fuxiuqing@njau.edu.cn
  • 基金资助:
    江苏省农业科技自主创新资金(CX(20)3085);中央高校基本科研业务费(KYXJ202002);石河子大学创新发展专项(CXFZ202015);南京农业大学高层次人才科研启动基金(104-804003)

Test on electrolytic modification of cross hole intersection

SHEN Zhenyu1, FU Xiuqing1, WANG Qingqing2, ZHANG Hongwen3, ZHANG Cheng1, TAO Yichen1, LI Jia1, GU Yanqing3   

  1. 1. College of Engineering, Nanjing Agricultural University, Nanjing 210031, China;
    2. College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    3. School of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, China
  • Received:2021-03-29 Revised:2021-04-22 Published:2021-07-09
  • Supported by:
    Jiangsu Agricultural Science and Technology Innovation Fund(CX (20) 3085);the Fundamental Research Funds for the Central Universities(KYXJ202002);Innovative Development Special Project of Shihezi University(CXFZ202015);High-level Talents Research Start-up Fund Project of Nanjing Agricultural University(104-804003)

摘要: 为提高发动机燃油效率,延长燃油喷射体的使用周期、降低维护成本,利用电解加工技术和相贯结构的阴极开展燃油喷射体内交叉孔相贯处的去毛刺和过渡圆弧修形试验研究,实现电解去除交叉孔相贯处的毛刺,且达到修形后相贯处过渡圆弧半径R=(2.0±0.2) mm的目的。建立交叉孔相贯处电解修形过程的数学模型,基于COMSOL软件进行不同加工时间和电压下电解修形过程的数值求解,开展交叉孔相贯处电解修形过程的工艺试验,对比分析相同工艺参数下数值求解与修形试验得到的过渡圆弧半径,验证修形过程数学模型的准确性,得到相贯处过渡圆弧半径随加工时间和电压的变化规律。结果表明,加工时间t=360 s、加工电压U=12 V时和加工时间t=420 s、加工电压U=10 V时,数值求解与修形试验得到的过渡圆弧半径较好地满足了过渡圆弧半径R=(2.0±0.2) mm的要求,且修形后的交叉孔相贯处的过渡圆弧轮廓明显。

关键词: 交叉孔相贯处, 电解修形, 相贯结构阴极, 数值计算, 工艺试验

Abstract: 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.

Key words: intersection of cross hole, electrolytic modification, intersecting structure cathode, numerical calculation, process test

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