脉冲电解液流动钛合金深小孔的电化学钻削

脉冲电解液流动钛合金深小孔的电化学钻削(中文3800字,英文3200字)
1.简介
具有相当高宽比的深孔，如涡轮叶片和叶片上的冷却孔已广泛应用于航空航天领域[1,2]。这些孔通常由镍基超合金，钛合金和金属间化合物制成，这些材料难以用机械加工技术加工。不管材料的机械性能如何，大多数都使用非传统加工技术。激光钻孔和放电加工（EDM）在表面上产生重铸层，必须随后在需要特定表面抛光的应用中去除重铸层。此外，随着加工深度的增加，电火花加工中的刀具磨损恶化，加工效率降低。电化学钻孔（ECD）可以达到较高的表面质量，不会出现刀具磨损和冶金缺陷。 ECD的固有特性意味着它可以成为在难切削材料中加工深孔的主要解决方案[3,4]。

Electrochemical Drilling of Deep Small Holes in Titanium Alloys with Pulsating Electrolyte Flow
1. Introduction
Deep small holes with considerable aspect ratios, such as cooling holes in turbine blades and vanes, have been widely applied in the aerospace field [1, 2]. These holes are typically made of nickel-based super alloys, titanium alloys, and intermetallic compounds, which are difficult-to-work-with mechanical machining technologies. Nontraditional machining technologies are mostly used, regardless of the mechanical properties of the materials. Laser drilling and electric discharge machining (EDM) produce recast layers on the surface, which must be subsequently removed in applications demanding a specific surface finish.