DEVICE FOR MICRO-ARC OXIDE FORMATION Russian patent published in 2014 - IPC C25D11/02 

FIELD: electricity.

SUBSTANCE: device contains a power supply unit and an electrolytic bath, two uncontrolled rectifiers and two controlled rectifiers, a capacitor and a control system, a current sensor and two voltage sensors, a key and a choke. The bath case is connected to the power supply unit terminal while its second terminal is connected to the anode of the first uncontrolled rectifier, the first capacitor plate and the first output of the key. The second key output is connected to the second capacitor plate, the anode of the second uncontrolled rectifier and the cathode of the second controlled rectifier. The cathode of the second uncontrolled rectifier is connected to the cathode of the second uncontrolled rectifier and the anode of the first controlled rectifier. One output of the current sensor is connected to the cathode of the first and second controlled rectifiers while the other output is connected to the first choke output. The second choke output is connected to the processed part. The inputs of the control system are connected to the outputs of current and voltage sensors and its outputs are connected to the control electrodes of the controlled rectifiers with the control key component.

EFFECT: improving strength of oxidation coating to increase in its thickness.

2 dwg