Flexible braided electrode and method for electrochemical polishing of complex internal channel

By combining internal and external fluid flushing and mechanical movement with flexible braided electrodes, the polishing problem of complex internal channels is solved, achieving efficient and stable electrochemical polishing results, avoiding short-circuit burns, and adapting to various internal channel shapes.

WO2025218687A1 Publication Date: 2025-10-23NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
4 Cites 0 Cited by

Patent Information

Application Number
PCT/CN2025/089220
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-12-11
Filing Date
2025-04-16
Publication Date
2025-10-23

AI Technical Summary

Technical Problem

Existing technologies are difficult to effectively finish complex internal channels, especially when the degree of curvature is high and the processed products cannot be discharged in time. The tool cathode is prone to short-circuit burns due to contact with the workpiece.

Method used

Flexible braided electrodes are used, which are made of a hollow mesh structure woven alternately from several flexible insulating wires and flexible conductive wires. Through internal and external composite flushing and mechanical movement, short circuits are avoided and product discharge is accelerated to achieve electrochemical polishing.

Benefits of technology

It effectively avoids short-circuit burns, improves processing stability and polishing efficiency, adapts to complex internal channels of different shapes, and enhances processing quality.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

A flexible braided electrode and a method for electrochemical polishing of a complex internal channel, which belong to the technical field of electrolytic machining. The flexible braided electrode is formed by inter-braiding a plurality of flexible conductive wires and a plurality of flexible insulating wires at certain intervals, the diameter of the insulating wires is greater than that of the conductive wires, and steps of a certain height are naturally formed between the flexible conductive wires and the flexible insulating wires, such that short-circuit burning caused by contact between the conductive metal wires and internal channels can be avoided, mass transfer can be enhanced, and the removal of products can be accelerated. The flexible braided electrode is of a hollow meshed cylindrical structure, such that internal-external composite electrolytic-solution flushing can be implemented, thereby improving a flushing effect. During polishing, the flexible braided electrode can adaptively bend and deform in a bent internal channel, such that the characteristic of the inside being in communication with the outside is used to perform internal-external composite electrolytic-solution flushing, and the rotation and reciprocating motion of the electrode are combined to implement electrochemical polishing of the complex internal channel. The flexible braided electrode provided in the present application, supplemented with an innovative process method, can realize efficient and high-quality finishing of the complex internal channel.
Need to check novelty before this filing date? Find Prior Art