ELECTROCHEMICAL MACHINING METHODS AND SYSTEMS

Abstract

Electrochemical machining methods and systems 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 polarizing electrode, and at least one fluid supply channel within the at least one polarizing electrode; the method may further include applying at least a second potential to the at least one polarizing electrode; the method may further include supplying a charged electrolyte solution through the at least one fluid supply channel to the electrolyte solution;The application of at least one second potential and the supply of the charged electrolytic solution generates at least one secondary electric field adjacent to the primary electric field and tempers at least one location of the primary electric field.

Description

ELECTROCHEMICAL MACHINING METHODS AND SYSTEMS CROSS-REFERENCE WITH RELATED APPLICATIONS This application claims priority from U.S. Application No. 17 / 843,254, filed on June 17, 2022, and is incorporated herein in its entirety. FIELD OF INVENTION The field of dissemination generally relates to electrochemical machining and, more particularly, to the methods and systems for performing electrochemical machining. BACKGROUND OF THE INVENTION Electrochemical machining (ECM) is a process for removing electrically conductive material, such as metals, using an electrochemical process. It is typically used to machine (including working or finishing) a workpiece made of an electrically conductive material. ECM generally provides the desired shape control and a smooth surface finish for manufacturing components, including, for example, blade discs and other components for gas turbines, jet engines, and power generation equipment. BRIEF DESCRIPTION OF THE FIGURES A full and enabling disclosure, including its best form, directed to a person skilled in the art, is set forth in the specification, which refers to the accompanying Figures, in which: Figure 1 shows a schematic view of an exemplary electrochemical machining system that includes a tool electrode and at least one polarizing electrode; Figure 2 shows a schematic view of another exemplary electrochemical machining system in accordance with this disclosure; Figure 3 shows a bottom perspective view of the tool electrode and the at least one polarizing electrode of Figure 1; Figure 4 shows a schematic view of a computer system that includes computer devices, in which one of the computer devices may function the same as or similarly to a controller of this disclosure; and Figure 5 shows a flow diagram of an electrochemical machining method in accordance with this disclosure. The repeated use of reference characters in this specification and drawings is intended to represent the same or similar characteristics or elements of this disclosure. DETAILED DESCRIPTION OF THE INVENTION Reference will now be made in detail to the embodiments of the disclosure, at least one example of which is illustrated in the drawings. Each example is provided by way of explanation of the disclosure, not as a limitation of the disclosure. In fact, it will be evident to those skilled in the art that various modifications and variations may be made to the present disclosure without departing from its scope. For example, features illustrated or described as part of one embodiment may be used with another embodiment to produce yet another embodiment. Accordingly, the present disclosure is intended to cover such modifications and variations that fall within the scope of the appended claims and their equivalents. The term "exemplary" is used herein to indicate that it serves as an example, instance, or illustration. Any implementation described herein as exemplary should not necessarily be interpreted as preferred or advantageous over other implementations. Furthermore, unless specifically identified otherwise, all modalities described herein should be considered exemplary. The terms coupled, fixed, joined and the like refer to both direct coupling, fixing or joining and indirect coupling, fixing or joining through at least one intermediate component or element, unless otherwise stated herein. As used in this document, the terms first, second, and third may be used interchangeably to distinguish one component from another and are not intended to signify the location or importance of the individual components. In the following specification and claims, the singular forms a, an, the, and a include plural references, unless the context clearly indicates otherwise. As used herein, the term or is not intended to be exclusive and refers to the presence of at least one of the referenced components and includes instances where a combination of the referenced components may be present, unless the context clearly indicates otherwise. As used here, the term cooling refers to a potential gradient within QR71 nn / cznz / β / υιλι refers to a particular area of ​​an electric field that is below the standard potential that would permit the electrochemical oxidation of a workpiece. As used here, the term location refers to the particular area of ​​the electric field that is extinguished. The strength of an electric field cannot be measured directly, but the effects of increasing or decreasing the strength of an electric field within a particular location of the electric field can be readily observed as described in this document, allowing a person to determine whether the electric field is extinguished within a particular location. As used here, the term eddy current attack refers to the oxidation of a finished component, which has already undergone electrochemical machining, adjacent to a workpiece during workpiece ECM. Eddy current attack is determined to have occurred when there is evidence that the adjacent finished component has undergone further material removal and surface pitting as a result of workpiece ECM. During ECM processes, electrically conductive material is oxidized from a workpiece using a potential applied to a tool electrode opposite the workpiece. This allows a current to flow through an electrolyte solution provided between the tool electrode and the workpiece at a controlled rate. The workpiece serves as the anode and is separated by an electrode gap from a tool electrode, which serves as the cathode. The electrolyte solution, typically a saline solution in water, flows through the gap between the electrodes, removing the oxidized material from the workpiece. As the tool electrode moves toward the workpiece to maintain a controlled electrode gap, the workpiece is machined into the complementary shape of the tool electrode. Electrochemical machining (ECM) is particularly useful for metals and alloys with high hardness, which makes them difficult to machine using conventional methods. For example, nickel-based alloys can be machined using ECM to manufacture a variety of components, such as bladed discs. When manufacturing bladed discs using ECM, each airfoil is electrochemically machined onto the disc one at a time. Specifically, once a single finished airfoil is electrochemically machined onto the disc, the disc is rotated to drive the ECM of the next airfoil onto a site adjacent to the finished airfoil. This process is repeated until the bladed disc has the desired number of airfoil surfaces. However, manufacturing bladed discs with ECM has proven challenging when using more complex metals and alloys, such as titanium-based alloys. Specifically, when machining bladed discs from more complex alloys using ECM, stray airflow tends to travel from the airfoil area being machined to adjacent, previously finished airfoils on the bladed disc. This stray airflow can damage the smooth surface finishes of the previously finished airfoil surfaces, resulting in a bladed disc with airfoil surfaces that have non-conforming geometry or finish, compromising the part's performance.This observation of eddy current attack is not limited to the ECM of compressor blade discs and can generally be observed in any ECM application where a component has closely spaced features and when complex metals or alloys are employed. There is therefore a need to extinguish the primary electric field generated by the ECM process in strategic locations to combat stray current attack from finished components adjacent to the workpiece. The aspects of this disclosure provide an ECM process to prevent eddy current attack on a finished component adjacent to the workpiece. The ECM process generally involves the selective quenching of locations within a primary electric field, which is generated between a tool electrode and a workpiece. These locations within the primary electric field can be selectively quenched using a combination of polarization anode protection and a charged electrolyte supply. Selectively quenching these locations minimizes eddy current attack and the oxidation rate of the finished component adjacent to the workpiece, which has already undergone ECM.In this regard, the methods and systems described herein utilize a combination of polarization anode protection and charged electrolyte flow, which can be used in an electrochemical machining system, to strategically alter the electric field generated during ECM at at least one location within the electrolyte solution to combat eddy current attack from the finished component adjacent to the workpiece. The aspects of this disclosure more effectively manage eddy currents and have the ability to control workpiece geometry with greater precision. Referring now to the drawings, Figures 1 and 2 each show a schematic view of an example electrochemical machining system 100 that includes a tool electrode 120 and at least one polarizing electrode 140. Specifically, the electrochemical machining system 100 includes a tool electrode 120 configured to generate a primary electric field 200 between the tool electrode 120 and a workpiece 130 opposite the tool electrode 120. The at least one polarizing electrode 140 is positioned adjacent to the tool electrode 120. Each at least one polarizing electrode 140 includes at least one fluid supply channel 144. The at least one polarizing electrode 140 is configured to generate at least one secondary electric field 210 adjacent to the primary electric field 200. In one embodiment, at least one polarizing electrode 140 is strategically positioned in regions of the electrochemical machining system 100 where eddy current attack is anticipated. For example, in the exemplary embodiment of Figures 1 and 2, eddy current attack on the finished component 150, which is adjacent to the workpiece 130, can be anticipated during the ECM operation. Specifically, in the absence of the polarizing anode shielding and charged electrolyte supply described herein, the primary electric field 200 generated between the tool electrode 120 and the workpiece 130 would be anticipated to be limited only by the area in which the primary electric field 200 would naturally dissipate, allowing eddy current to travel freely from the primary electric field 200 to the finished component 150 if naturally capable.Therefore, in the exemplary embodiments shown in Figures 1 and 2, the at least one polarizing electrode 140 is preferably positioned next to the tool electrode 120 and in a position opposite the workpiece 130 such that a charged electrolyte solution 142 can be supplied through the at least one fluid supply channel 144 to the hollow electrode 180 of the electrochemical machining system 100 via at least one nozzle 141 of the at least one polarizing electrode 140. The at least one polarizing electrode 140 thus inhibits eddy current attack on a finished component 150 adjacent to a workpiece 130. The workpiece 130 and the at least one polarizing electrode 140 can include any metallic material suitable for ECM. In one embodiment, the workpiece 130 and the at least one polarizing electrode 140 can each include metallic materials that are unique to each other. Alternatively, the workpiece 130 and the at least one polarizing electrode 140 can include metallic materials that are identical to each other. For example, in one embodiment, the workpiece 130 and the at least one polarizing electrode 140 may include a metallic material. In another embodiment, the metallic material may include a pure metal or a metallic alloy. Pure metals may include titanium, niobium, nickel, zirconium, palladium, platinum, aluminum, chromium, manganese, cobalt, molybdenum, hafnium, tungsten, or a combination thereof. Alloys may include superalloys, such as a titanium-based alloy, niobium-based alloy, nickel-based alloy, zirconium-based alloy, palladium-based alloy, platinum-based alloy, aluminum-based alloy, chromium-based alloy, manganese-based alloy, cobalt-based alloy, molybdenum-based alloy, hafnium-based alloy, tungsten-based alloy, or a combination thereof. However, other metallic materials may be employed. As shown in Figures 1 and 2, the exemplary electrochemical machining system 100 includes at least one spacer 160, the at least one spacer 160 being positioned between the at least one polarizing electrode 140 and the tool electrode 120. The at least one spacer contains a non-conductive material, which electrically insulates the tool electrode 120 from the at least one polarizing electrode 140. Therefore, at least one secondary electric field 210 can be generated in conjunction with the primary electric field 200. For example, the at least one spacer 160 can contain a glass fiber reinforced non-conductive material, such as a fluoropolymer. In one embodiment, at least one spacer 160 can have a thickness of 100 micrometers to 2500 micrometers, or from 350 micrometers to 2000 micrometers, or from 500 micrometers to 1500 micrometers. In another embodiment, at least one spacer 160 can have a thickness of 750 micrometers to 1000 micrometers. The workpiece 130 is separated from the tool electrode 120 by an electrode gap 180, in which an electrolyte solution 190 is interposed between the tool electrode 120 and the workpiece 130. The electrode gap 180 can be varied by moving the tool electrode 120, the workpiece 130, or a combination of these. The workpiece 130, the tool electrode 120, and the at least one polarizing electrode 140 of the electrochemical machining system 100 can be electrically connected in at least one electrical circuit. In one exemplary embodiment, as shown in Figure 1, the workpiece 130, the tool electrode 120, and the at least one polarizing electrode 140 are electrically connected in a circuit. Furthermore, each workpiece 130, tool electrode 120, and at least one polarizing electrode 140 can be electrically connected to each other in series or in parallel. In one exemplary embodiment, as shown in Figure 1, the electrochemical machining system 100 includes at least one polarizing electrode 140 that is electrically connected in series with the tool electrode 120 and the workpiece 130.In one embodiment, as shown in Figure 1, the electrochemical machining system may include a single power supply 170. Alternatively, as shown in Figure 2, which shows a schematic front view of another example of an electrochemical machining system 100, the electrochemical machining system 100 may be electrically connected to a first power supply 171 and at least one second power supply 172. Referring to Figures 1 and 2, the electrochemical machining system 100 further includes an electrolyte supply 143 configured to deliver a charged electrolyte solution 142 to at least one fluid supply channel 144. The electrolyte supply 143 may contain an electrolyte solution and be in fluid communication with at least one polarization electrode 140. The electrolyte supply 143 may supply electrolyte solution to at least one polarization electrode 140 using any suitable means known in the art. For example, a conventional pump (not shown) may be employed to move the electrolyte solution from the electrolyte supply 143 to at least one polarization electrode 140. The charged electrolyte solution 142, together with the electrolyte solution 190 in the electrode gap 180, may include any suitable electrolyte, such as a base, an acid, or an ionic liquid. In some embodiments, the electrolyte solution 190 includes ionic salts, binary acids, organic acids, deep eutectics, molten salts, or combinations thereof. The charged electrolyte solution 142, the electrolyte solution 190, or both may be an aqueous electrolyte, such as an aqueous salt electrolyte comprising water and at least one salt. In one embodiment, the charged electrolyte solution 142, the electrolyte solution 190, or both may include an aqueous salt electrolyte, including sodium nitrate, sodium chloride, sodium bromide, sodium hydroxide, perchloric acid, phosphoric acid, or a combination thereof.In some embodiments, the charged electrolyte solution 142, the electrolyte solution 190, or both, may consist of 10 percent (by weight) to 30 percent (by weight) sodium nitrate. For example, an electrolyte solution containing 20 percent (by weight) sodium nitrate may be used for the electrochemical machining of nickel-based alloys such as Inconel 718. Furthermore, the charged electrolyte solution 142, the electrolyte solution 190, or both, generally have a pH adjusted depending on the material being electrochemically machined. For example, the pH of the electrolyte may be adjusted to a pH of 5 to 10. It will be appreciated that other electrolytes in aqueous solution may be used with the techniques described herein. As shown in Figures 1 to 2, the electrochemical machining system 100 may further include a controller 112, a power supply 170, and an actuator 113. The controller 112 may be operatively connected to the power supply 170 to adjust the voltages of the first potential and at least one second potential as desired. The controller 112 may also be operatively connected to the actuator 113 to adjust the position of the tool electrode 120 and / or the workpiece 130 during the ECM process. As used herein, the phrase "operatively connected" should be understood to mean that the respective components may be connected (e.g., mechanically or electrically) directly or via other components. Controller 112 and power supply 170 can be a combined unit, although shown as a separate unit in Figure 1. In addition, in some modes, controller 112 can be configured and operated in the same or similar manner as one of the computing devices 402 of the computing system 400 in Figure 4. With reference now to Figure 3, which shows a bottom perspective view of the tool electrode 120 and the at least one polarizing electrode 140 of Figures 1 and 2, the at least one polarizing electrode 140 can be positioned relative to the tool electrode 120 in various ways. For example, as shown in Figure 3, the bottom face of the tool electrode 120 can be generally circular, with each at least one polarizing electrode 140 positioned equidistant from the others, radially surrounding the tool electrode 120. However, other configurations can be employed as desired, since the configuration of the tool electrode 120 and the at least one polarizing electrode 140 depends on at least the shape of the workpiece 130 and the location where eddy current attack is to be minimized. Figure 4 provides an example computer system 400 according to one example modality of this topic. The controller 112 described here may include several components and perform several functions of at least one computer device 402 of the computer system 400 described below. As shown in Figure 4, the computer system 400 may include at least one or more computing devices 402. The computing devices 402 may include at least one processor 404 and at least one memory device 406. The at least one processor 404 may include any suitable processing device, such as a microprocessor, microcontroller, integrated circuit, logic device, and / or other suitable processing device. The at least one memory device 406 may include at least one computer-readable medium, including, but not limited to, non-transient computer-readable media, RAM, ROM, hard disks, flash drives, and / or other memory devices. The at least one memory device 406 may store information accessible by the at least one processor 404, including the computer-readable instructions 408 that can be executed by the at least one processor 404. The instructions 408 may be any set of instructions that, when executed by at least one processor 404, cause at least one processor 404 to perform operations, such as any of the operations described herein. For example, the methods provided herein may be implemented in whole or in part by the computer system 400. The instructions 408 may be software written in any suitable programming language or may be implemented in hardware. In addition, and / or alternatively, the instructions 408 may be executed on logically and / or virtually separate threads on the processor(s) 404.Memory devices 406 can also store 410 data that can be accessed by 404 processors. For example, 410 data can include models, databases, etc. The computing devices 402 may also include a network interface 412 used to communicate, for example, with the other components of the electrochemical machining system 100 (for example, via a network). The network interface 412 may include any component suitable for interacting with at least one network or networks, including, for example, transmitters, receivers, ports, antennas, and / or other suitable components. In another embodiment, a method 700 for electrochemical machining of a workpiece is generally provided, as shown in the flow diagram in Figure 5. The method includes applying a first potential to a tool electrode of an electrochemical machining system to generate a primary electric field 710. The electrochemical machining system includes a workpiece opposite the tool electrode, at least one polarizing electrode, and at least one fluid supply channel within the at least one polarizing electrode. The primary electric field is generated within an electrolytic solution between the tool electrode and the workpiece. The method further includes applying at least a second potential to the at least one polarizing electrode 720.The method further includes delivering a charged electrolyte solution through at least one fluid supply channel to electrolyte solution 730, applying at least one secondary potential, and supplying the charged electrolyte solution, which generates at least one secondary electric field adjacent to the primary electric field and extinguishes at least one location of the primary electric field. The polarization anode shielding works in conjunction with the delivery of charged electrolytes to create a robust operation for electrochemically machining complex geometries using difficult-to-machine materials, while combating eddy current attack on adjacent finished surfaces. In certain embodiments, the delivery of charged electrolyte solution through at least one fluid supply channel within at least one polarizing electrode, in combination with the application of at least one secondary potential to the polarizing electrode, provides the ability to locally alter the primary electric field and affect the rate at which local materials, including the workpiece and adjacent finished component, are oxidized. In particular embodiments, the strategic placement of at least one polarizing electrode, in combination with the delivery of charged electrolyte through at least one fluid channel, allows the primary electric field to be extinguished at strategic locations and is typically adjacent to the actual site of electrochemical machining.As such, a method is generally provided to more precisely control the primary electric field to combat eddy current attack from the primary electric field on an adjacent finished component. During the operation, the workpiece 130 can act as an anode and the tool electrode 120 can act as a cathode, generating the primary electric field 200 between the workpiece 130 and the tool electrode 120. In addition, at least one polarizing electrode 140 can act as an anode and the tool electrode 120 can act as a cathode, generating at least one secondary electric field 210 adjacent to the primary electric field 200 between each of the at least one polarizing electrode 140 and the tool electrode 120. As discussed, a single power supply 170 can be electrically connected to the electrochemical machining system 100. In one embodiment, the method may include using the single power supply 170 to apply the first potential and at least a second potential to the electrochemical machining system 100. Furthermore, in another embodiment, the method may include the use of a first power supply 171 to apply a first potential to the electrochemical machining system 100 and the use of at least a second power supply 172 to apply at least a second potential to the electrochemical machining system 100. Applying the first potential to the electrochemical machining system 100 can generate the primary electric field 200, while applying at least a second potential to the electrochemical machining system 100 can generate at least a secondary electric field 210 adjacent to the primary electric field 200. Each at least one second potential can be a unique voltage. That is, the at least one second potential can include two or more second potentials that are unique voltages. This provides precise control of the oxidation of workpiece 130 at selected locations on the workpiece 130, since each at least one secondary electric field 210 can be generated to remove material from the workpiece 130 at a unique oxidation rate. Alternatively, at least two or more of the second potentials can have the same voltage. In one embodiment, the first potential applied to the electrochemical machining system 100 can be a first DC potential of 5 volts to 50 volts, such as 5 volts to 35 volts. In one embodiment, at least a second potential applied to the electrochemical machining system 100 can be at least a second DC potential of 1 volt to 50 volts, such as 1 volt to 35 volts, such as 1 volt to 10 volts. In one embodiment, the method may include applying the first potential to the electrochemical machining system 100, wherein the first potential is a pulsed first potential. Similarly, the method may include applying at least a second potential to the electrochemical machining system 100, wherein at least one second potential applied to the electrochemical machining system 100 is at least a pulsed second potential. Specifically, the power supply 170 may be configured to provide the pulsed first potential, at least one pulsed second potential, or a combination of these in the form of pulsed potentials (and more particularly, bipolar pulsed potentials).In one embodiment, the application of the first pulsed potential to the tool electrode 120 electrochemically removes a predetermined amount of material from the workpiece 130, while the application of at least a second pulsed potential to at least one polarizing electrode 140 generates at least one secondary electric field 210. QR71 nn / cznz / β / υιλι As used in this document, the term average potential is the average of the idle-time potential and the active-time potential of each pulsed potential. In some modalities, the average potential of the first pulsed potential may be in the range of 1 volt to 5 volts. In addition, the average potential of at least a second pulsed potential may be in the range of 1 to 5 volts. In one embodiment, the power supply 170 may include a bipolar power supply and may be configured to perform pulse train control. In another embodiment, the controller 112 may be configured to adjust the pulse duration, frequency, and voltage of the first pulse potential applied to the tool electrode 120 and the workpiece 130, and the second pulse potential applied to the tool electrode 120 and at least one polarizing electrode 140 as desired. For example, the pulse durations of the first pulsed potential, at least one second pulsed potential, or a combination of these can range from 10 nanoseconds to 1000 microseconds, such as from 10 nanoseconds to 50 microseconds. Furthermore, in one mode, the voltage applied to the first pulsed potential, at least one second pulsed potential, or a combination of these can range from 10 volts to 50 volts, such as from 15 volts to 25 volts. Furthermore, in some embodiments, the method includes controlling the distance between the tool electrode 120 and the workpiece 130 (i.e., the electrode gap length 180) to be greater than 0.05 millimeters, such as greater than 0.1 millimeters. In some embodiments, the method includes controlling the distance between the tool electrode 120 and the workpiece 130 to be from 0.1 millimeters to 2 millimeters, such as from 0.5 millimeters to 1.5 millimeters. In one embodiment, the method includes supplying a charged electrolyte solution through at least one fluid supply channel to the electrolyte solution 730. Specifically, a charged electrolyte solution is supplied through at least one fluid supply channel within the at least one polarizing electrode to the electrode space from an electrolyte supply. In one exemplary embodiment, a power supply can be electrically connected to at least one polarizing electrode as the electrolyte solution is delivered from the electrolyte supply to the at least one polarizing electrode. The electrolyte solution being delivered from the electrolyte supply can be charged and transformed into a charged electrolyte solution by applying at least a second potential to the at least one polarizing electrode. In this way, the charged electrolyte solution can be delivered through at least one fluid supply channel and exit the at least one polarizing electrode through at least one nozzle to specific regions of the workpiece, altering the primary electric field and combating eddy current attack from the finished component adjacent to the workpiece. In an exemplary embodiment, the charged electrolyte solution exits from at least one nozzle 141 at a rate of 1 l / min to 50 l / min, as well as from 1 l / min to 25 l / min, as well as from 1 l / min to 10 L / min, as well as from 1 L / min to 5 L / min. In some cases, in combination with the supply of charged electrolyte, the electrolyte solution 190 can be continuously forced through the electrode gap 180 to rinse the workpiece 130 and the tool electrodes 120 at a flow rate of 0.5 L / s to 20 L / s, or 3.75 L / s to 10 L / s. Additionally, the electrolyte solution 190 can be continuously forced through the electrode gap 180 at a pressure of 350,000 Pa to 3,500,000 Pa. In certain configurations, it has been shown that polarization anode protection in combination with a charged electrolyte supply results in a reduced amount of eddy current attack on the surface of finished components adjacent to the workpiece being electrochemically machined. Evidence of this reduced eddy current attack on the adjacent finished component 150 is illustrated by the decrease in the amount of additional material removal and surface pitting experienced by the finished component 150 during the electrochemical machining of the workpiece 130, compared to electrochemically machining a workpiece 130 under the same conditions without polarization anode protection and a charged electrolyte supply. In one embodiment, the delivery of the charged electrolyte solution substantially decreases the oxidation rate of the finished component 150 adjacent to the workpiece 130. Similarly, the decrease in the oxidation rate of the finished component 150 is illustrated by the decrease in the amount of additional material removal and surface pitting suffered by the finished component 150 during the electrochemical machining of the workpiece 130, compared to the electrochemical machining of the workpiece 130 under the same conditions without polarizing anode protection and charged electrolyte supply. Consequently, as described herein, this material provides improved methods and systems for electrochemical machining. For example, the current state of the art requires the manual physical masking of finished components adjacent to a workpiece to protect their surfaces from eddy current attack. In contrast, the combination of polarization anode shielding and charged electrolyte supply, as described herein, enables closed-loop automatic control of the primary electric field of an electrochemical machine and the serial machining of a workpiece with a nearby adjacent finished component through an improved degree of protection against eddy current attack, all without the need for manual masking.Specifically, the protection of the polarization anode in combination with the supply of charged electrolyte as described in this document provides selective quenching of particular locations in the primary electric field, thus ensuring the quality of the components. QR71 nn / cznz / β / υιλι adjacent terminations even in parts that have closely spaced complex features, such as bladed discs. Furthermore, the systems and methods described in this document can be adapted to existing machines. The technology discussed in this document refers to computer systems and the actions performed by information sent to and from those systems. A person skilled in the art will recognize that the inherent flexibility of computer-based systems allows for a wide variety of possible configurations, combinations, and divisions of tasks and functionality among the components. For example, the processes discussed in this document can be implemented using a single computing device or multiple computing devices operating in combination. Databases, memory, instructions, and applications can be implemented on a single system or distributed across multiple systems. Distributed components can operate sequentially or in parallel. The purpose of the following clauses provides further aspects of the disclosure: An electrochemical machining method of a workpiece, the method comprising: applying a first potential to a tool electrode of an electrochemical machining system to generate a primary electric field, wherein the electrochemical machining system comprises a workpiece opposite the tool electrode, at least one polarizing electrode, and at least one fluid supply channel within the at least one polarizing electrode; wherein the primary electric field is generated within an electrolytic solution between the tool electrode and the workpiece; applying at least a second potential to the at least one polarizing electrode;and delivering a charged electrolyte solution through at least one fluid supply channel to the electrolyte solution, wherein the application of at least one second potential and the delivery of the charged electrolyte solution generate at least one secondary electric field adjacent to the primary electric field and extinguishes at least one location of the primary electric field. The method of any clause herein, wherein at least one spacer is placed between the at least one polarizing electrode and the tool electrode. The method of any clause in this document, wherein at least one spacer has a thickness of 100 micrometers to 2500 micrometers. The method of any clause in this document, wherein at least one polarizing electrode is electrically connected in series with the tool electrode and the workpiece. The method of any clause of this document, wherein the first potential is a direct current potential of 5 volts to 50 volts. The method of any clause in this document, wherein at least one second potential is a direct current potential of 1 volt to 10 volts. The method of any clause in this document, wherein the first potential is a first pulsed potential and the at least one second potential is at least one second pulsed potential. The method of any clause of this document, where the first pulsed potential has an average potential of 1 volt to 5 volts. The method of any clause in this document, wherein at least one second pulsed potential has an average potential of 1 volt to 5 volts. The method of any clause of this document, wherein the charged electrolytic solution is charged into at least one fluid supply channel by at least one second potential. The method of any clause of this document, wherein the charged electrolyte solution exits from at least one nozzle of at least one electrode at a rate of 1 l / min to 50 l / min. The method of any clause herein, wherein the workpiece and the at least one polarizing electrode comprise a metallic material, the metallic material comprising a metallic alloy comprising a titanium-based alloy, niobium-based alloy, nickel-based alloy, zirconium-based alloy, palladium-based alloy, platinum-based alloy, aluminum-based alloy, chromium-based alloy, manganese-based alloy, cobalt-based alloy, molybdenum-based alloy, hafnium-based alloy, tungsten-based alloy or a combination thereof. The method of any clause in this document, wherein the supply of the charged electrolytic solution substantially reduces the oxidation rate of a finished component adjacent to the workpiece. The method of any clause in this document, where the finished component is an airfoil. The method of any clause in this document, wherein at least one second potential comprises two or more second potentials that are unique voltages to each other. An electrochemical machining system, comprising: a tool electrode configured to generate a primary electric field between the tool electrode and a workpiece opposite the tool electrode; and at least one polarizing electrode positioned adjacent to the tool electrode, wherein the at least one polarizing electrode comprises at least one fluid supply channel, the at least one polarizing electrode configured to generate at least one secondary electric field adjacent to the primary electric field. The electrochemical machining system of any clause of this document, wherein at least one polarizing electrode is electrically connected in series with the tool electrode and the workpiece. The electrochemical machining system of any of the clauses of this document, which further comprises a power supply electrically connected to at least one polarizing electrode and to the tool electrode. The electrochemical machining system of any clause herein, further comprising an electrolyte supply configured to deliver a charged electrolyte solution to at least one fluid supply channel. The electrochemical machining system of any of the clauses of this document, wherein at least one spacer is located between the at least one polarizing electrode and the tool electrode. This written description uses exemplary modes to disseminate the disclosure, including the best mode, and also to enable any person skilled in the art to practice the disclosure, including the manufacture and use of any device or system and the performance of any embodied method. The patentable scope of the disclosure is defined by the claims and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they include structural elements that do not differ from the literal language of the claims or if they include equivalent structural elements with insubstantial differences from the literal language of the claims.

Claims

1. An electrochemical machining method for a workpiece, the method comprising: applying a first potential to a tool electrode of an electrochemical machining system to generate a primary electric field, wherein the electrochemical machining system comprises a workpiece opposite the tool electrode, at least one polarizing electrode, and at least one fluid supply channel within the at least one polarizing electrode; wherein the primary electric field is generated within an electrolytic solution between the tool electrode and the workpiece; applying at least a second potential to the at least one polarizing electrode;and delivering a charged electrolyte solution through at least one fluid supply channel to the electrolyte solution, wherein the application of at least one second potential and the delivery of the charged electrolyte solution generate at least one secondary electric field adjacent to the primary electric field and temper at least one location of the primary electric field. 2 - The method according to claim 1, further characterized in that at least one spacer is placed between the at least one polarizing electrode and the tool electrode.

3. The method according to claim 2, further characterized in that the at least one spacer has a thickness of 100 micrometers to 2500 micrometers.

4. The method according to claim 1, further characterized in that the at least one polarization electrode is electrically connected in series with the tool electrode and the workpiece.

5. The method according to claim 1, further characterized in that the first potential is a direct current potential of 5 volts to 50 volts.

6. The method according to claim 1, further characterized in that at least a second potential is a direct current potential of 1 volt to 10 volts.

7. The method according to claim 1, further characterized in that at least one second potential comprises two or more second potentials that are unique voltages from each other.

8. The method according to claim 1, further characterized in that the first potential is a first pulsed potential and the at least one second potential is at least one second pulsed potential.

9. The method according to claim 8, further characterized in that the QR71 nn / cznz / β / υιλι first pulsed potential has an average potential of 1 volt to 5 volts.

10. The method according to claim 8, further characterized in that the at least one second pulsed potential has an average potential of 1 volt to 5 volts.

11. The method according to claim 1, further characterized in that the charged electrolytic solution is charged in at least one fluid supply channel by at least one second potential.

12. The method according to claim 1, further characterized in that the charged electrolytic solution flows out of at least one nozzle of the at least one polarizing electrode at a rate of 1 L / min to 50 L / min.

13. The method according to claim 1, further characterized in that the workpiece and the at least one polarizing electrode comprise a metallic material, the metallic material comprising a metallic alloy comprising a titanium-based alloy, a niobium-based alloy, a nickel-based alloy, a zirconium-based alloy, a palladium-based alloy, a platinum-based alloy, an aluminum-based alloy, a chromium-based alloy, a manganese-based alloy, a cobalt-based alloy, a molybdenum-based alloy, a hafnium-based alloy, a tungsten-based alloy, or a combination thereof. 14.- The method according to claim 1, further characterized in that the supply of the charged electrolytic solution substantially decreases an oxidation rate of a finished component adjacent to the workpiece.

15. The method according to claim 14, further characterized in that the finished component is an airfoil.

16. An electrochemical machining system comprising: a tool electrode configured to generate a primary electric field between the tool electrode and a workpiece opposite the tool electrode; and at least one polarizing electrode positioned adjacent to the tool electrode, wherein the at least one polarizing electrode comprises at least one fluid supply channel, the at least one polarizing electrode configured to generate at least one secondary electric field adjacent to the primary electric field.

17. The electrochemical machining system according to claim 16, further characterized in that it additionally comprises: at least one spacer placed between the at least one polarizing electrode and the tool electrode.

18. The electrochemical machining system according to claim 16, further characterized in that the at least one polarization electrode is electrically connected in series with the tool electrode and the workpiece.

19. The electrochemical machining system according to claim 16, further characterized in that it additionally comprises a power supply electrically connected to at least one polarization electrode and to the tool electrode.

20. The electrochemical machining system according to claim 16, further characterized in that it additionally comprises: an electrolyte supply configured 5 to supply a charged electrolyte solution to at least one fluid supply channel.

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