Flexible wire electrode, assembly and method for composite polishing of inner surface of tiny metal runner

Abstract

The invention discloses a flexible wire electrode, assembly and method for composite polishing of the inner surface of a tiny metal runner. The flexible wire electrode is mainly characterized in thatthe flexible wire electrode for electrochemical mechanical composite polishing of the inner surface of the tiny metal runner is formed by spirally winding two flexible wires, wherein one flexible wireis an insulating flexible wire, the other flexible wire is a conductive cathode wire, the diameter of the insulating flexible wire is larger than that of the conductive cathode wire, the conductive cathode wire is located in a spiral groove formed by the insulating flexible wire, contact short circuit between the conductive cathode wire and the inner surface of the tiny metal runner is avoided; and during polishing, the flexible wire electrode carry out reciprocating motion in the tiny metal runner, electrolyte mixed with abrasive particles flows in from one end of the tiny metal runner through a booster pump and flows out from the other end of the tiny metal runner, and electrochemical mechanical composite polishing is conducted on the inner surface of the tiny metal runner through the electrochemical effect and the micro-cutting effect of the abrasive particles moving at a high speed.

Description

technical field [0001] The invention belongs to the technical field of surface polishing of the inner wall of a metal flow channel, and particularly relates to a flexible wire electrode, an assembly and a method for composite polishing of the inner surface of a tiny metal flow channel. Background technique [0002] 3D printing technology has achieved rapid development in recent years. This manufacturing technology can realize the manufacture of complex structures that are difficult or impossible to process by traditional processes, and has great advantages in aerospace and other fields. The integrated design and manufacture of parts combined with 3D printing technology effectively simplifies the production process and shortens the manufacturing cycle. But at the same time, 3D printing technology, as a relatively new manufacturing technology, still has problems such as limited forming accuracy of formed parts and relatively large surface roughness. For small metal runner wor...

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