摘要
电解加工是发动机叶盘的主要加工方法,其流场问题直接影响加工精度和表面品质。以叶盘电解加工为对象,对加工区域中电解液的流动问题进行研究,分析不同流场的优劣,建立型面加工时的流场数学模型,利用有限元方法对加工初始阶段和平衡阶段的全流道电解液流速分布进行仿真计算,结果表明采用从工具电极两侧进入的双向进液方式可以保证流场的均匀稳定。并进行了叶盘扇段毛坯的电解加工试验,试验表明该流动方式设计合理,有利于提高电解加工的稳定性。
Abstract： Electrochemical machining （ECM） is applied in aerospace blisk producation. Flow field affects the accuracy and surface quality. This paper takes the blisk ECM as object to study the electrolyte flow field in the inter-electrode gap. A mathematical model describing electrolyte flow is developed. The flow field is analyzed by finite element method and the result shows the flow field can be ensured to be stable during the process when the electrolyte flows from the convex and concave electrodes respectively. The experi- mental investigations are carried out in order to evaluate the rationality of the flow field. The results reveale that the flow field can be used to improve the stability of ECM process.
出处
《机械制造与自动化》
2013年第5期108-111,共4页
Machine Building & Automation
基金
中国博士后科学基金项目:(2011M500913)
辽宁省企业技术中心专项基金项目:辽经信科技[2010]214号
