摘要
随着越来越多的新型材料在航空航天产品上得到应用,这些材料的特殊成分及组织也给现有的加工技术带来了新的挑战。通过充分发挥电弧的高温和高能量密度优势,结合有效的断弧手段,可以实现难切削材料的高效蚀除,为后续精加工去掉绝大多数的余量。介绍了电弧放电加工的主要原理,分析了现有的电弧加工方法尤其是可用于航空航天产品加工的电弧铣削及电弧成形加工的工艺特点、加工对工件表面质量的影响等,介绍了这一新型工艺方法在航空航天产品,尤其是发动机热端难加工部件制造上的潜在优势。
The increasing application of new engineering materials on aerospace products brings a real challenge to modern manufacturing processes because most of them belong to the difficult-to-cut materials. Based on the advantages of high temperature and high energy density, electrical arc has an enormous potential on bulk material removal especially in the high efficient machining of difficult-to-machine alloys. This paper introduces the mechanism of electrical arc machining and some representative electrical arc machining processes and their performances. At last, the potential advantages of arc machining on the fabrication of engine turbine parts are introduced.
出处
《航空制造技术》
2016年第3期36-41,54,共7页
Aeronautical Manufacturing Technology
关键词
难切削材料
电弧放电加工
机械运动断弧
流体动力断弧
高效加工
Difficult-to-cut material
Electrical arc machining
Mechanical motion arc breaking: Hydrodynamic arc breaking
High efficient machining
作者简介
顾琳上海交通大学机械与动力工程学院副教授,博士生导师。主要研究方向为特种加工、高速电弧放电加工技术及装备、微细加工技术及装备。