Methods and systems of electrochemically machining are provided. The methods may include applying a first potential to a tool electrode of an electrochemical machining system to generate a primary electric field. The electrochemical machining system may include a workpiece opposite the tool electrode, at least one bias electrode, and at least one fluid delivery channel within the at least one bias electrode. The method may further include applying at least one second potential to the at least one bias electrode. The method may further include delivering a charged electrolyte solution through the at least one fluid delivery channel into the electrolyte solution. Applying at least one second potential and the delivering the charged electrolyte solution generates at least one secondary electric field adjacent to the primary electric field and quenches at least one location of the primary electric field.

Methods and systems of electrochemically machining a component are provided. The method may include applying two or more potentials to a tool electrode comprising an array of two or more individual electrodes to generate two or more electric fields in between the tool electrode and a workpiece opposite of the tool electrode, wherein each of the two or more electric fields is generated by one of the array of two or more individual electrodes.

A nozzle for an electrochemical machining device. The nozzle defining a body with first and second releasably attachable body portions forming an electrolyte cavity therebetween, when the first and second body portions are attached. The body includes an inlet port upstream of the cavity, and an outlet port for dispensing a jet of electrolyte towards a surface of a workpiece, in use, where a flow path is defined from the inlet port through the cavity to the outlet port.

A nozzle for an electrochemical machining device. The nozzle defining a body with first and second releasably attachable body portions forming an electrolyte cavity therebetween, when the first and second body portions are attached. The body includes an inlet port upstream of the cavity, and an outlet port for dispensing a jet of electrolyte towards a surface of a workpiece, in use, where a flow path is defined from the inlet port through the cavity to the outlet port.

Provided is an electrochemical machine. More particularly, provided is an electrochemical machine which removes an electrolytic product generated while electrochemical machining (ECM) so as to improve the quality of ECM and allows micro ECM. The electrochemical machine according to an embodiment of the present invention may include: a processing tub filled with an electrolyte; a processed object immersed in the electrolyte filled in the processing tub; a storage unit for storing the electrolyte; an electrolyte supply unit for supplying the electrolyte stored in the storage unit to the processing tub; a manifold comprising an inflow path, to which the electrolyte supplied by the electrolyte supply unit flows, and an outflow path connected to the inflow path for discharging the electrolyte flowing to the inflow path to the processed object, wherein a discharge hole of the outflow path is immersed in the electrolyte filled in the processing tub; an electrode which is fixed to the manifold so as for one end thereof to pass the outflow path and to be projected toward a lower part of the discharge hole and is electrically connected to the processed object; and a power unit for supplying power to the electrode and the processed object.

Provided is an electrochemical machine. More particularly, provided is an electrochemical machine which removes an electrolytic product generated while electrochemical machining (ECM) so as to improve the quality of ECM and allows micro ECM. The electrochemical machine according to an embodiment of the present invention may include: a processing tub filled with an electrolyte; a processed object immersed in the electrolyte filled in the processing tub; a storage unit for storing the electrolyte; an electrolyte supply unit for supplying the electrolyte stored in the storage unit to the processing tub; a manifold comprising an inflow path, to which the electrolyte supplied by the electrolyte supply unit flows, and an outflow path connected to the inflow path for discharging the electrolyte flowing to the inflow path to the processed object, wherein a discharge hole of the outflow path is immersed in the electrolyte filled in the processing tub; an electrode which is fixed to the manifold so as for one end thereof to pass the outflow path and to be projected toward a lower part of the discharge hole and is electrically connected to the processed object; and a power unit for supplying power to the electrode and the processed object.

The invention relates to a method for removing Cr(VI) ions from an aqueous electrolyte solution, particularly an electrolyte solution for electrochemical metal machining, which comprises the reduction of Cr(VI) to Cr(III) with Fe(II) ions. The Fe(II) ions are added to the electrolyte solution in the form of an aqueous salt solution which has been brought into contact with an ion exchange resin loaded with Fe(II) ions. The invention further relates to a device (1) for electrochemical machining of a workpiece (2) by means of an aqueous electrolyte solution (6), which has an ion exchanger (11) which has been loaded with an ion exchange resin charged with Fe(II) ions.

The invention relates to a method for removing Cr(VI) ions from an aqueous electrolyte solution, particularly an electrolyte solution for electrochemical metal machining, which comprises the reduction of Cr(VI) to Cr(III) with Fe(II) ions. The Fe(II) ions are added to the electrolyte solution in the form of an aqueous salt solution which has been brought into contact with an ion exchange resin loaded with Fe(II) ions. The invention further relates to a device (1) for electrochemical machining of a workpiece (2) by means of an aqueous electrolyte solution (6), which has an ion exchanger (11) which has been loaded with an ion exchange resin charged with Fe(II) ions.

A device for the electrochemical processing of a metal workpiece, including a plurality of electrodes that by way of respective linear drive units are movable in a linear manner relative to the workpiece from an initial position to a terminal position, the electrodes having a reproduction face that is directed toward the workpiece, wherein at least three electrodes are provided, the electrodes being disposed so as to be offset around the circumference of the workpiece and by way of the reproduction faces of the electrodes during the entire readjustment movement from the initial position to the terminal position engaging across one another in portions so as to be in contact, and by way of the reproduction faces of the electrodes delimiting a fluid duct that in a closed manner encircles the circumference of the workpiece.

A device for the electrochemical processing of a metal workpiece, including a plurality of electrodes that by way of respective linear drive units are movable in a linear manner relative to the workpiece from an initial position to a terminal position, the electrodes having a reproduction face that is directed toward the workpiece, wherein at least three electrodes are provided, the electrodes being disposed so as to be offset around the circumference of the workpiece and by way of the reproduction faces of the electrodes during the entire readjustment movement from the initial position to the terminal position engaging across one another in portions so as to be in contact, and by way of the reproduction faces of the electrodes delimiting a fluid duct that in a closed manner encircles the circumference of the workpiece.