Device for limiting the short-circuit energy in electrolytic metal-forming apparatus

Abstract

Abstract A device for limiting the short-circuit current between tool and workpiece of an electrolytic metal-forming machine in which an electrolyte is kept flowing through the gap between the workpiece and a shaped tool whose particular shape is to be imparted in a negative manner upon the workpiece. The tool and workpiece are connected to an alternating-current supply through an alternating-current controller and a rectifier in series with a smoothing reactor. A voltage sensing member is connected across the electrolyte gap between tool and workpiece in order to respond to a slight departure of the gap voltage from the rated operating voltage. When responding, the sensing member causes the alternating-current controller to block the further supply of alternating current and simultaneously releases a normally open power-current switch likewise connected across the electrolyte gap.

Inventors

• 👤 N Bardahl
• 👤 F Gotz

Bibliographic Details