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Surface Finishing Tutorial

Date:April23, 2010

Categry : Metal etching

#039 Electrolytic etching - Electrolytic etching applications - 3

5) Electrolytic turning

This is a process of performing lathe-like turning work by electrolytic process. Unlike the conventional lathe turning where cutting tool bits are to move axially along the part, electrolytic turning produces axially symmetrical part by advancing pre-shaped electrode tools radially towards the center of the rotating work piece, as shown in [Fig.1].

[Fig.1] Electrolytic turning


This method can achieve in a single pass what conventional copy lathe can. Also, it possible to perform operations difficult for the conventional lathe associated with part distortion problems sue to tool pressures.


6) Electrolytic cut-off

This method is effective for hard cutting materials such as tungsten and its alloys. Many types of tool electrodes are used for this. One example is shown in [Fig.2].

[Fig.2] Electrolytic cut-off


In this example, thin metal electrode discs are rotated at high speed and the electrolyte is sprayed on to the discs. The sprayed electrolyte is fed into the process gaps by centrifugal force. This example shows two discs but the discs can be of any multiples.


7) Electrolytic face-milling

This is a face-milling process that utilizes the electrolytic effects. An example where the electrolyte is sprayed on a surface of a rotating cylindrical electrode is shown in [Fig.3] This is a non-contacting process and the electrode does not contain any abrasives, which is unlike electrolytic grinding process.

[Fig.3] Electrolytic face-milling


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