Electrochemical Deburring and Grinding

Electrochemical Deburring:

Electrochemical deburring (ECD) adapts the Electrochemical Machining (ECM) process designed to remove burrs or sharp round corners on metal workpieces by the anodic dissolution method. One possible setup for ECD is shown in figure 1. The hole in the work part has a sharp burr of the type produced in a conventional through-hole drilling operation. The electrode tool is designed better to focus the metal removal action on the burr. Surface portions of the machining tool not being used for machining are insulated. The electrolyte material flows through the hole to carry away the burr particles. The exact Electrochemical machining (ECM) principles also apply to Electrochemical deburring (ECD). Less material is removed in the Electrochemical Deburring (ECD) machining process; cycle times are much shorter. A typical cycle time in ECD is less than a minute. The cycle time can be increased if desired to round the corner and remove the burr.

Electrochemical deburring

Figure 1: Electrochemical Deburring

Electrochemical Grinding:

Electrochemical grinding (ECG) is a particular type of Electrochemical Machining. A rotating grinding wheel with a conductive bond material is used to augment the anodic dissolution of the metalwork part surface, as illustrated in the figure below 2. Abrasive materials used in ECG include aluminum oxide and diamond. The bond material used is metallic (for the diamond type of material abrasives) or resin bond impregnated with metal particles to make it electrically conductive (for aluminum oxide type of material abrasives). The abrasive grits protruding from the grinding wheel at the contact with the work part establish the gap distance. The electrolyte flows through the grain gap distance to play its role in the electrolysis process.

Electrochemical grinding

Figure 2: Electrochemical grinding

Depleting is responsible for 95% or more of the metal removal in Electrochemical grinding. The abrasive action of the grinding wheel removes the remaining 5% or less, mainly in the form of salt films formed during the electrochemical reactions at the work surface. Electrochemical action accomplishes most of the machining, the grinding wheel in Electrochemical Grinding has a much longer life than a wheel in conventional grinding. The result is a much higher grinding ratio. The dressing of the grinding wheel is required much less frequently. These are the significant advantages of the ECG process. Applications of ECG include sharpening of cemented carbide tools, grinding of surgical needles, other thin wall tubes, and fragile parts.

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All Comments

  • Dear Sir,

    We are looking for purchase electrochemical deburing machine, kindly contact us.

    Regards
    A.Munisamy

    A.Munisamy Jun 16, 2017 1:10 pm Reply

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