A dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device and processing method

Abstract

The present invention discloses a dual-cathode, dual-liquid-supply diffuser blade jacketing electrolysis device and processing method. The present invention utilizes dual-channel liquid supply: while the main channel supplies liquid to the entire blade surface, a secondary channel replenishes liquid toward the blade basin and back. This significantly increases the flow rate in the processing area, reduces low-speed areas, facilitates product discharge, and improves processing stability. Furthermore, the present invention utilizes dual cathodes: while the main cathode corrodes the blade surface, the secondary cathode simultaneously removes excess material distributed toward the blade basin and back, preventing wedge-shaped blocks from breaking and becoming stuck between the cathode and the workpiece, causing a short circuit. This improves processing stability and addresses the problem of poor processing stability caused by short-circuit burns during the diffuser jacketing electrolysis process.

Description

Technical Field

[0001] The present invention relates to the technical field of diffuser jacketing electrolysis, and more particularly to a dual-cathode, dual-liquid-supply diffuser blade jacketing electrolysis device and a processing method. Background Art

[0002] As a core component of a compressor, the diffuser is typically thin-walled, often made of difficult-to-machine materials such as high-temperature alloys. It has a large diameter and numerous blades arranged circumferentially. The diffuser significantly impacts engine performance, requiring high machining precision. Trepanning electrochemical machining (ECM) offers advantages such as high machining efficiency, zero cathode loss, no cutting forces, and no impact on the material's cutting properties, making it a primary manufacturing method for diffusers.

[0003] During the electrolytic machining of trepanning, it is necessary to introduce a high-speed flow of electrolyte into the area to be machined. The uniformity and accessibility of the electrolyte in the machining area are closely related to the machining quality. When machining multi-bladed disk parts such as diffusers or blade disks, the blades, blade basins, and blade backs are involved. The electrolyte has a wide circulation area, and it is difficult to adjust the uniformity and accessibility of the electrolyte. At the same time, during the electrolytic machining of trepanning of diffuser blades, it is also necessary to take into account the corrosion state of the area between adjacent blades. The corrosion process in this area will affect the stability of the overall machining, but in most cases, the machining conditions in this area are not taken seriously. In the electrolytic machining device for trepanning with an insoluble blade trailing edge and its machining method in CN107570818A, it is disclosed that an insulating block is provided on the front end face of the cathode. The insulating block is fitted with the non-machined surface of the cathode, thereby achieving three-sided machining of the leading edge, blade basin, and blade back of the blade. A liquid retaining block is slidably connected within the sealed box, housing a protective cavity for the processed blades. During machining, the protective cavities of the two liquid retaining blocks remain enclosed within adjacent, processed blades, effectively preventing stray corrosion of these adjacent blades. This patent controls the electrolyte flow field from the tip to the root through the machining area by adjusting the gap between the liquid retaining block and the cathode, ensuring that the machining area is filled with high-speed electrolyte flow, thereby improving the uniformity and accessibility of the flow field. This patent regulates the uniformity of the flow field by using the liquid retaining block, allowing the electrolyte to flow through the machining area from the tip to the root, ensuring that it flows to sharp corners or edges, ensuring uniformity and accessibility of the flow field during electrolytic machining of the cladding. However, during the electrolytic machining of a single blade, due to the large amount of excess removal in the blade basin and back, while the electrolyte can reach the blade, the flow rate is insufficient, making short-circuit burns a common problem. Furthermore, this patent focuses on machining the leading edge, blade basin, and back of a single blade, ignoring corrosion in the area between adjacent blades. During the actual electrolytic machining of adjacent blades, wedge-shaped blocks will appear in the middle of the adjacent blades and near the blade tips. After the wedge blocks are broken, they may be washed by the electrolyte between the cathode and the workpiece, forming a short circuit and affecting the machining stability. Summary of the Invention

[0004] The main technical problem to be solved by the present invention is to provide a dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device to address the shortcomings of the prior art diffuser, which suffers from short-circuit burning during the jacket electrolysis process, resulting in poor processing stability.

[0005] Another technical problem solved by the present invention is to provide a dual-cathode, dual-liquid supply electrolytic machining method for diffuser blade casing.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A dual-cathode, dual-liquid supply diffuser blade jacketing electrolysis device includes a cathode assembly, wherein the cathode assembly includes a main shaft connecting block, a connecting plate, a liquid guide sleeve, a connecting block, and a cathode, wherein the main shaft connecting block is connected to the connecting plate, the connecting block is connected to the connecting plate, the liquid guide sleeve is disposed in an inner cavity of the connecting block and connected to the connecting plate, and the cathode is connected to the connecting block;

[0008] The liquid inlet of the main shaft connecting block is connected to the liquid inlet cavity, a through hole 1 is provided on the connecting plate to connect to the main channel of the liquid guide sleeve, a through hole 2 is also provided on the connecting plate to connect to the secondary channel of the liquid guide sleeve, and the channel outlet of the secondary channel is connected to the flow channel of the main channel;

[0009] The cathode comprises a main cathode and a sub-cathode. The main cathode is arranged at the end of the liquid guide sleeve and connected to the connection block, and the sub-cathode is arranged on the side wall of the connection block.

[0010] Furthermore, the dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device also includes an anode assembly, which includes a base, a guide cylinder, a spring, a support column, an anode seat and a pressure plate. The base is provided with a guide cylinder, and a spring and a support column are provided in the guide cylinder. The support column is provided with an anode seat, and the pressure plate is connected to the base to compress the diffuser.

[0011] Furthermore, the main channel is a straight flow channel, with its outlet located at the end of the liquid guide sleeve. A secondary channel is located on the side of the main channel, with its outlet communicating with the flow channel of the main channel. This replenishes electrolyte in the flow channel of the main channel near the processing area, thereby increasing flow. Specifically, the outlet of the secondary channel is located closer to the processing area, resulting in a shorter path, less loss, higher flow rate, and better fluid replenishment effect.

[0012] Furthermore, the outlet of the secondary channel is located between the leading and trailing edges of the blade to supply liquid to the blade body. The length of the secondary channel is close to the length of the blade body, and the width is not less than 1 mm.

[0013] Furthermore, the number of the secondary channels is not less than two.

[0014] Furthermore, the auxiliary cathode includes an auxiliary cathode 1 and an auxiliary cathode 2, and the auxiliary cathode 1 and the auxiliary cathode 2 are arranged opposite to each other on the side wall of the connecting block.

[0015] Furthermore, the main shaft connecting block, connecting plate, connecting block and cathode are made of metal materials, and the liquid guide sleeve is made of insulating material.

[0016] Furthermore, the spindle connecting block is connected to the machine tool spindle, and the machine tool spindle is connected to the negative pole of the power supply, so that the cathode is negatively charged.

[0017] Furthermore, the base guide cylinder, spring, support column, anode seat and pressure plate are made of metal materials.

[0018] Furthermore, the base is connected to the positive pole of the power supply so that the anode seat is positively charged. Furthermore, the anode seat is connected to the positive pole of the power supply for auxiliary power supply.

[0019] A dual cathode, dual liquid supply diffuser blade casing electrolytic machining method, the steps comprising;

[0020] S1. Install a connecting plate on the end of the liquid inlet cavity of the spindle connecting block. Install the connecting block on the connecting plate. Connect the liquid guide sleeve to the connecting plate through the inner cavity of the connecting block. Align the primary and secondary channels of the liquid guide sleeve with through-holes 1 and 2 on the connecting plate, respectively. Install a primary cathode on the end of the liquid guide sleeve, connect the primary cathode to the connecting block, and fit the secondary cathode to the side wall of the connecting block. This completes the cathode assembly.

[0021] S2. The diffuser is mounted on the base and fixed with a pressure block. A guide cylinder is installed at the edge of the diffuser at the base. The guide cylinder is provided with a spring and a support column. An anode holder is provided on the support column to complete the assembly of the anode assembly.

[0022] S3. Connect the cathode assembly to the spindle connection block and the negative electrode of the power supply, so that the cathode assembly is negatively charged, while the electrolyte is input into the liquid inlet cavity of the spindle connection block, and connect the base of the anode assembly to the positive electrode of the power supply to make the anode seat positively charged;

[0023] S4. Control the cathode to feed the diffuser, and the electrolyte enters the main channel and the secondary channel respectively from the liquid inlet cavity. The electrolyte in the main channel supplies liquid to the entire surface of the blade, and the electrolyte in the secondary channel supplements the supply of liquid to the blade basin and back of the blade. The electrolyte flows out of the liquid outlet channel through the gap between the main cathode and the diffuser; at the same time, the main cathode at the end of the liquid guide sleeve electrolytically corrodes the diffuser blade surface, and the secondary cathode on the side wall removes the residual corrosion between the blades.

[0024] Furthermore, the pressure of the electrolyte is 1.5-2 MPa, and the feeding speed is 2.5-5 mm / min.

[0025] Compared with the prior art, the beneficial effects are:

[0026] The present invention uses a dual-channel liquid supply. While the main channel supplies liquid to the entire blade surface, the secondary channel replenishes liquid in the blade basin and back direction. This greatly increases the flow rate in the processing area, reduces the low-speed area, facilitates product discharge, and improves processing stability. In addition, the present invention uses a dual cathode. While the main cathode corrodes the blade surface, the secondary cathode simultaneously removes the excess distributed in the blade basin and back direction. While the blade is being electrolytically processed, the wedge block is corroded, preventing the wedge block from breaking off and getting stuck between the cathode and the workpiece, causing a short circuit, which helps improve processing stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the diffuser jacket electrolysis tooling;

[0028] Figure 2 It is a schematic diagram of dual liquid supply and dual cathode;

[0029] Figure 3 These are the simulation results of single-liquid supply and dual-liquid supply flow fields.

[0030] Figure 4 This is a comparison of the low-speed flow area of ​​the single-liquid supply and dual-liquid supply flow field simulation;

[0031] a is a schematic diagram of the single-liquid-supply flow field, and b is a schematic diagram of the dual-liquid-supply flow field.

[0032] Among them, 1. Main shaft connecting block, 2. Liquid inlet, 3. Connecting plate, 4. Liquid guide sleeve, 5. Connecting block, 6. Main cathode, 7. Blade, 8. Diffuser, 9. Pressure plate, 10. Copper ring, 11. Support column, 12. Spring, 13. Guide cylinder, 14. Base, 15. Liquid inlet cavity, 16. Main channel, 17. Auxiliary cathode 1, 18. Auxiliary channel, 19. Liquid outlet channel, 20. Auxiliary cathode 2. DETAILED DESCRIPTION

[0033] The present invention will be further explained and illustrated below with reference to the embodiments, but the specific embodiments do not limit the present invention in any form.

[0034] Example 1

[0035] This embodiment provides a dual-cathode, dual-liquid supply diffuser blade jacketing electrolysis device, including a cathode assembly, wherein the cathode assembly includes a main shaft connecting block 1, a connecting plate 3, a liquid guide sleeve 4, a connecting block 5, and a cathode. The main shaft connecting block 1 is connected to the connecting plate 3, the connecting block 5 is connected to the connecting plate 3, the liquid guide sleeve 4 is disposed in the inner cavity of the connecting block 5 and is connected to the connecting plate 3, and the cathode is connected to the connecting block 5.

[0036] The liquid inlet 2 of the spindle connecting block 1 is connected to the liquid inlet cavity 15. The connecting plate 3 is provided with a through hole 1 connected to the main channel 16 of the liquid guide sleeve 4. The connecting plate 3 is also provided with a through hole 2 connected to the secondary channel 18 of the liquid guide sleeve 4. The channel outlet of the secondary channel is connected to the flow channel of the main channel.

[0037] The cathode includes a main cathode 6 and a secondary cathode. The main cathode 6 is arranged at the end of the liquid guide sleeve 4 and connected to the connecting block 5 , and the secondary cathode is arranged on the side wall of the connecting block 5 .

[0038] Example 2

[0039] This embodiment provides a dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device, including a cathode assembly and an anode assembly.

[0040] The cathode assembly includes a spindle connection block 1, a connection plate 3, a liquid guide sleeve 4, a connection block 5 and a cathode. The spindle connection block 1 is connected to the connection plate 3, the connection block 5 is connected to the connection plate 3, the liquid guide sleeve 4 is arranged in the inner cavity of the connection block 5 and connected to the connection plate 3, and the cathode is connected to the connection block 5.

[0041] The liquid inlet 2 of the spindle connecting block 1 is connected to the liquid inlet cavity 15. The connecting plate 3 is provided with a through hole 1 connected to the main channel 16 of the liquid guide sleeve 4. The connecting plate 3 is also provided with a through hole 2 connected to the secondary channel 18 of the liquid guide sleeve 4. The channel outlet of the secondary channel is connected to the flow channel of the main channel.

[0042] The cathode includes a main cathode 6 and a secondary cathode. The main cathode 6 is arranged at the end of the liquid guide sleeve 4 and connected to the connecting block 5 , and the secondary cathode is arranged on the side wall of the connecting block 5 .

[0043] The anode assembly includes a base 14, a guide cylinder 13, a spring 12, a support column 11, an anode seat and a pressure plate 9. The base 14 is provided with a guide cylinder 13, and the concave cavity of the guide cylinder 13 is provided with a spring 12 and a support column 11. The support column 11 is provided with a copper ring 10. The pressure plate 9 is connected to the base 14 to compress the diffuser 8.

[0044] Example 3

[0045] This embodiment provides a dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device, including a cathode assembly and an anode assembly.

[0046] The cathode assembly includes a spindle connection block 1, a connection plate 3, a liquid guide sleeve 4, a connection block 5 and a cathode. The spindle connection block 1 is provided with a liquid inlet 2 connected to its liquid inlet cavity 15. The end of the liquid inlet cavity 15 is provided with a connection plate 3, and the connection plate 3 is provided with a through hole 1 and a through hole 2. The connection block 5 is connected to the connection plate 3. The connection block 5 is hollow. The liquid guide sleeve 4 is placed in the inner cavity of the connection block 5 and connected to the connection plate 3. The main channel 16 and the secondary channel 18 on the liquid guide sleeve 4 are aligned with the through hole 1 and the through hole 2 respectively. The main channel 16 of the liquid guide sleeve 4 is also provided with a secondary channel 18 1 and a secondary channel 18 2 on both sides. The secondary channel is set on the side of the main channel 16. The channel outlet of the secondary channel is connected to the main channel 16, and the channel outlet of the secondary channel is close to the processing area, with a short path, small loss, high flow rate, and better fluid replenishment effect. The end of the liquid guide sleeve 4 is provided with a main cathode 6 and connected to the connection block 5. The outer wall of the connection block 5 is provided with a secondary cathode.

[0047] The anode assembly includes a base 14, a guide cylinder 13, a spring 12, a support column 11, an anode seat and a pressure plate 9. A positioning circle is provided in the center of the base 14, and a pressure block is provided in the center of the positioning circle to connect with the base 14 to compress the diffuser 8. A plurality of guide cylinders 13 are provided around the positioning circle of the base 14, and a spring 12 and a support column 11 are provided in the concave cavity of the guide cylinder 13, and a copper ring 10 is provided on the support column 11.

[0048] The spindle connecting block 1 is connected to the negative pole of the power supply, and the main cathode 6 and the auxiliary cathode are negatively charged through the connecting plate 3 and the connecting block 5. The base 14 is connected to the positive pole of the power supply, so that the copper ring 10 is positively charged. At the same time, the copper ring 10 is connected to the positive pole of the power supply for auxiliary power supply.

[0049] Example 4

[0050] This embodiment provides a dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device, including a cathode assembly and an anode assembly.

[0051] The cathode assembly includes a spindle connection block 1, a connection plate 3, a liquid guide sleeve 4, a connection block 5, and a cathode. The spindle connection block 1 is provided with a liquid inlet 2 connected to its liquid inlet cavity 15. The end of the liquid inlet cavity 15 is provided with a connection plate 3, which is provided with through-holes 1 and 2. The connection block 5 is connected to the connection plate 3 and is hollow. The liquid guide sleeve 4 is placed within the cavity of the connection block 5 and connected to the connection plate 3. The primary channel 16 and secondary channel 18 of the liquid guide sleeve 4 are aligned with through-holes 1 and 2, respectively. A primary cathode 6 is provided at the end of the liquid guide sleeve 4 and connected to the connection block 5. A secondary cathode is provided on the outer wall of the connection block 5.

[0052] The liquid guide sleeve 4 is provided with a straight main channel 16 to provide electrolyte for the processing of the blades 7. Auxiliary channels 18-1 and 18-2 are also provided on both sides of the main channel 16 of the liquid guide sleeve 4. The auxiliary channels 18-1 and 18-2 are arranged on both sides of the main channel 16. The outlets of the auxiliary channels are connected to the main channel 16 and are close to the processing area. Specifically, the outlets of the auxiliary channels are located between the leading and trailing edges of the blades to supply liquid to the blade body. The length of the auxiliary channel is approximately the same as or equal to the length of the blade body, and the width is not less than 1mm. It replenishes the liquid supply to the blade basin and back of the blade 7. The auxiliary cathode includes auxiliary cathode 1 17 and auxiliary cathode 2 20. The auxiliary cathode 1 17 and auxiliary cathode 2 20 are arranged opposite each other on the side walls of the connecting block 5 to remove the excess in the blade basin and back between the blades 7.

[0053] The anode assembly includes a base 14, a guide cylinder 13, a spring 12, a support column 11, an anode seat and a pressure plate 9. A positioning circle is provided in the center of the base 14, and a pressure block is provided in the center of the positioning circle to connect with the base 14 to compress the diffuser 8. A plurality of guide cylinders 13 are provided around the positioning circle of the base 14, and a spring 12 and a support column 11 are provided in the concave cavity of the guide cylinder 13, and a copper ring 10 is provided on the support column 11.

[0054] The spindle connecting block 1 is connected to the negative pole of the power supply, and the main cathode 6 and the auxiliary cathode are negatively charged through the connecting plate 3 and the connecting block 5. The base 14 is connected to the positive pole of the power supply, so that the copper ring 10 is positively charged. At the same time, the copper ring 10 is connected to the positive pole of the power supply for auxiliary power supply.

[0055] Example 5

[0056] This embodiment provides a processing method based on the dual-cathode, dual-liquid supply diffuser blade jacketing electrolysis device described in Example 1, and the steps include:

[0057] S1. Install the connecting plate 3 at the end of the liquid inlet cavity 15 of the spindle connecting block 1. Install the connecting block 5 on the connecting plate 3. Connect the liquid guide sleeve 4 to the connecting plate 3 through the inner cavity of the connecting block 5. Align the primary channel 16 and secondary channel 18 on the liquid guide sleeve 4 with through-holes 1 and 2 on the connecting plate 3, respectively. Install the primary cathode 6 at the end of the liquid guide sleeve 4. Connect the primary cathode to the connecting block 5, and the secondary cathode is bonded to the sidewall of the connecting block 5. This completes the cathode assembly.

[0058] S2. The diffuser 8 is mounted on the base 14 and fixed with a pressure block. The guide cylinder 13 is installed at the edge of the diffuser 8 on the base 14. The guide cylinder 13 is provided with a spring 12 and a support column 11. The anode holder is provided on the support column 11 to complete the assembly of the anode assembly.

[0059] S3. The cathode assembly is connected to the spindle connection block 1 and the negative electrode of the power supply, so that the cathode assembly is negatively charged, while the electrolyte is input into the liquid inlet cavity 15 of the spindle connection block 1, the base of the anode assembly 14 is connected to the positive electrode of the power supply, so that the anode seat is positively charged;

[0060] S4. Control the cathode to feed toward the diffuser 8 at a speed of 2.5 mm / min. Set the electrolyte pressure to 2 MPa. The electrolyte enters the main channel 16 and the secondary channel 18 from the liquid inlet chamber 15, respectively. The electrolyte in the main channel 16 supplies liquid to the entire surface of the blade 7, and the electrolyte in the secondary channel 18 supplements the supply of liquid to the blade basin and back of the blade 7. The electrolyte flows out through the gap between the main cathode 6 and the diffuser 8 to the liquid outlet channel 19. At the same time, the main cathode 6 at the end of the liquid guide sleeve 4 electrolytically corrodes the blade surface of the diffuser 8, and the secondary cathode on the side wall corrodes and removes the residual liquid between the blades 7.

[0061] Example 6

[0062] This embodiment provides a comparative experiment of single liquid supply and dual liquid supply. The single liquid supply and dual liquid supply flow field simulation models are established respectively. The same liquid inlet pressure and liquid outlet pressure are set to ensure the consistency of the parameters. The simulation experiment is carried out. The experimental results are shown in FIG. Figures 3 and 4 As shown in the figure, when only the main water channel is used for liquid supply, there are more low-speed areas at the blade basin and blade back of the blade body. When the auxiliary water channel is used for liquid supply, the low-speed areas are significantly reduced and tend to disappear. Therefore, dual liquid supply can better increase the electrolyte flow rate and flow rate, quickly discharge the erosion products generated by electrolytic machining, and improve machining stability.

[0063] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A dual-cathode, dual-liquid supply diffuser blade jacketing electrolysis device, characterized in that: The cathode assembly includes a main shaft connection block, a connection plate, a liquid guide sleeve, a connection block, and a cathode, wherein the main shaft connection block is connected to the connection plate, the connection block is connected to the connection plate, the liquid guide sleeve is arranged in the inner cavity of the connection block and connected to the connection plate, and the cathode is connected to the connection block; The liquid inlet of the main shaft connecting block is connected to the liquid inlet cavity, the connecting plate is provided with a through hole 1 connected to the main channel of the liquid guide sleeve, the connecting plate is further provided with a through hole 2 connected to the secondary channel of the liquid guide sleeve, and the channel outlet of the secondary channel is connected to the flow channel of the main channel; The cathode comprises a main cathode and a sub-cathode. The main cathode is arranged at the end of the liquid guide sleeve and connected to the connection block, and the sub-cathode is arranged on the side wall of the connection block.

2. The dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device according to claim 1, characterized in that: It also includes an anode assembly, which includes a base, a guide cylinder, a spring, a support column, an anode seat and a pressure plate. The base is provided with a guide cylinder, a spring and a support column are provided in the guide cylinder, an anode seat is provided on the support column, and the pressure plate is connected to the base to compress the diffuser.

3. The dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device according to claim 1, characterized in that: The main channel is a straight flow channel, and the channel outlet of the main channel is arranged at the end of the liquid guide sleeve; the secondary channel is arranged on the side of the main channel, and the channel outlet of the secondary channel is connected to the flow channel of the main channel.

4. The dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device according to claim 1, characterized in that: The number of the secondary channels is not less than two.

5. The dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device according to claim 1, characterized in that: The auxiliary cathode includes an auxiliary cathode 1 and an auxiliary cathode 2, and the auxiliary cathode 1 and the auxiliary cathode 2 are arranged opposite to each other on the side wall of the connection block.

6. The dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device according to claim 1, characterized in that: The main shaft connecting block, connecting plate, connecting block and cathode are made of metal materials, and the liquid guide sleeve is made of insulating material.

7. The dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device according to claim 6, characterized in that: The spindle connecting block is connected to the machine tool spindle, and the machine tool spindle is connected to the negative pole of the power supply.

8. The dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device according to claim 2, characterized in that: The base, guide cylinder, spring, support column, anode seat and pressing plate are made of metal materials.

9. The dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device according to claim 8, characterized in that: The base is connected to the positive pole of the power supply.

10. A dual-cathode, dual-liquid supply diffuser blade jacketing electrochemical machining method, characterized in that: Steps include; S1. Install a connecting plate on the end of the liquid inlet cavity of the spindle connecting block. Install the connecting block on the connecting plate. Connect the liquid guide sleeve to the connecting plate through the inner cavity of the connecting block. Align the primary and secondary channels of the liquid guide sleeve with through-holes 1 and 2 on the connecting plate, respectively. Install a primary cathode on the end of the liquid guide sleeve, connect the primary cathode to the connecting block, and fit the secondary cathode to the side wall of the connecting block. This completes the cathode assembly. S2. The diffuser is mounted on the base and fixed with a pressure block. A guide cylinder is installed at the edge of the diffuser at the base. The guide cylinder is provided with a spring and a support column. An anode holder is provided on the support column to complete the assembly of the anode assembly. S3. Connect the cathode assembly to the spindle connection block and the negative electrode of the power supply, so that the cathode assembly is negatively charged, while the electrolyte is input into the liquid inlet cavity of the spindle connection block, and connect the base of the anode assembly to the positive electrode of the power supply to make the anode seat positively charged; S4. Control the cathode to feed the diffuser, and the electrolyte enters the main channel and the secondary channel respectively from the liquid inlet cavity. The electrolyte in the main channel supplies liquid to the entire surface of the blade, and the electrolyte in the secondary channel supplements the supply of liquid to the blade basin and back of the blade. The electrolyte flows out of the liquid outlet channel through the gap between the main cathode and the diffuser; at the same time, the main cathode at the end of the liquid guide sleeve electrolytically corrodes the diffuser blade surface, and the secondary cathode on the side wall removes the residual corrosion between the blades.

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