Electrochemical machining method and system

By combining biased anode protection and charged electrolyte delivery, the problem of stray current attack in electrochemical machining is solved, enabling high-precision machining of complex metal alloy blade disks and ensuring the quality and surface finish of the finished parts.

CN117245160BActive Publication Date: 2026-06-16GENERAL ELECTRIC CO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GENERAL ELECTRIC CO
Filing Date
2023-06-16
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

During electrochemical machining, adjacent finished components of complex metal alloy blade disks are susceptible to stray current attacks, resulting in inconsistent geometry and surface finish damage. Existing technologies are unable to effectively prevent this phenomenon.

⚗Method used

A combination of biased anode protection and charged electrolyte transport is adopted. By generating a secondary electric field in the electrolyte solution to strategically quench the electric field, the influence of stray current on adjacent finished components is reduced, and automated control is achieved by combining a computing system.

🎯Benefits of technology

It effectively reduces the oxidation rate of finished parts caused by stray currents and the removal of additional materials, improving machining accuracy and surface finish. Especially for parts with complex geometries, it avoids the need for manual physical masking.

✦ Generated by Eureka AI based on patent content.

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Abstract

Methods and systems of electrochemical machining are provided. The method can include applying a first electrical potential to a tool electrode of an electrochemical machining system to generate a primary electric field. The electrochemical machining system can include a workpiece opposite the tool electrode, at least one bias electrode, and at least one fluid delivery channel within the at least one bias electrode. The method can also include applying at least one second electrical potential to the at least one bias electrode. The method can also include delivering a charged electrolyte solution through the at least one fluid delivery channel into the electrolyte solution. The application of the at least one second electrical potential and the delivery of the charged electrolyte solution generates at least one secondary electric field adjacent to the primary electric field and quenches at least one location of the primary electric field.
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