Electrochemical polishing apparatus and method

Abstract

The invention discloses an electrochemical polishing device, which comprises: a tank body; at least one electrolytic tank transversely arranged on the tank body, and the two ends of the tank body respectively form an inlet and an outlet for the workpiece to be polished. Move laterally in the electrolytic cell; the electrodes located on both sides of the electrolytic cell, the electric field formed by the electrodes is shielded in the electrolytic cell; the electrolyte supply pipeline is connected to the electrolytic cell and guides the electrolyte Flow along the surface of the workpiece to be polished. The invention also discloses an electrochemical polishing method. The device of the invention has a simple structure and can solve the columnar stripes appearing on the surface of the base band. The polishing method of the invention has good polishing effect and fast polishing processing speed.

Description

technical field [0001] The invention relates to an electrochemical polishing device and method. Background technique [0002] High-temperature superconducting wires represented by the second-generation ReBCO (Re=Y, or rare earth elements) are composed of various metal oxide films grown on metal substrates. The working performance of high-temperature superconducting wire depends entirely on the surface condition of the metal substrate and the growth characteristics of various metal oxide films. In order to obtain high-quality high-temperature superconducting wires, there are very high requirements on the surface of the metal substrate and the growth of various metal oxide films. [0003] First of all, it is well known that in order for ReBCO metal oxides to exhibit superconducting properties, the ReBCO film must have a metal oxide crystal structure, and this crystal structure must be biaxially oriented. In other words, the space of each crystal forming the film must be cons...

AI Technical Summary

Problems solved by technology

The first problem is residual particles on the base tape surface after polishing

The second problem is the columnar stripe structure that appears on the surface of the baseband

[0010] The shortcoming of above-mentioned technology is: 1. The method for solving the first problem is unreasonable

If the electrolysis process under the action of high current cannot remove particles or oil stains on the surface of the baseband, then the low-current electrolysis process set in the patent at the front end of the electropolishing will not do much

2. The method to solve the columnar stripes on the surface of the baseband is too complicated

Its disadvantage is that the polishing speed of the baseband is too slow (20 m / h), which cannot meet the needs of industrial production (requires at least 60 m / h)

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