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ELECTROLYTIC GRINDING

In the process of electrolytic grinding (ELG), an abrasive wheel much like a standard grinding wheel is used. The abrasive wheel bond is metal, thus making it a conducting Wheel-cathode medium. The abrasive grains in the grinding wheel are nonconducting and aid in removing oxides from the workpiece while helping maintain the gap between wheel and work. ELG,like ECM, is a deplating process, and workpiece material is carried away by the circulating electrolyte. ELG System The basic ELG system (Figure M-110) consists of the appropriate
power supply,the electrode (metal bonded grinding wheel), work-holding equipment, and the electrolyte supply and filtration system. Workpiece material is deplated and goes into the electrolyte solution.

m-110
Advantages and Applications of ELG Because ELG is primarily electrochemical and not mechanical, as is conventional grinding, the abrasive wheel in ELG wears little in the process (Figure M-111). ELG is burr-free and will not distort or overheat the workpiece. The process is therefore useful for small precision parts and thin or fragile workpieces.

m-111

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