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방전성형법(underwater spark or electric-discharge forming method, electrohydraulic forming method)

Explosive forming converts electrical energy stored in a capacitor bank into hydraulic pressure. Utilizing explosive forming, parts can be formed from either a tube or a flat sheet. (The illustrations above give an example of the method in which both are formed.) After the blanks are loaded into a form die, the chamber is filled with water and a pair of electrodes is inserted into the work chamber. The capacitor bank is then discharged through the electrodes and an interconnecting initiating filament. This produces an expanding plasma channel and a high intensity shock wave which combine to force the workpiece to move outward against the die.

방전성형법에 의한 제품예

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