Electrochemical detection method for alloy turbine blade strengthening phase segregation band

Abstract

The invention relates to the technical field of aero-engine turbine blade detection, and discloses an electrochemical detection method for a strengthening phase segregation strip of an alloy turbine blade, and the method comprises the following steps: carrying out protective insulation on a tenon and a blade crown area of the turbine blade, and carrying out oil removal and cleaning on the blade after protective insulation; taking the cleaned blade as an anode, and performing electrochemical treatment in a mixed solution of phosphoric acid and sulfuric acid; removing ash on the blade subjected to electrochemical treatment in hydrochloric acid and nitric acid solutions; and the blade subjected to dust removal is placed in a sodium carbonate solution to be neutralized, the neutralized blade is cleaned and blow-dried, and a strengthening phase segregation strip on the surface of the alloy turbine blade is obtained through irradiation detection. According to the method, the turbine blade is subjected to electrochemical treatment, a specific electrochemical reaction layer can be formed on the surface of the blade, and the reaction layer can highlight the characteristics of a strengthening phase segregation strip, so that the detection precision and accuracy are improved.

Description

Technical Field

[0001] The invention relates to the technical field of aero-engine turbine blade detection, in particular to an electrochemical detection method for strengthening phase segregation strips of alloy turbine blades. Background Art

[0002] In the field of manufacturing and application of high-temperature alloy materials, especially in the manufacturing process of engine turbine blades, strengthening phase segregation bands are an issue that requires special attention. Strengthening phase segregation bands refer to specific areas formed due to the uneven distribution of alloy elements inside the material. These areas present different characteristics from the surrounding matrix in the microstructure of the material. This segregation phenomenon not only affects the mechanical properties of the material, such as strength and toughness, but may also lead to the generation and expansion of cracks, thus seriously affecting the service life and safety of engine turbine blades.

[0003] In current technology, visual inspection is an intuitive and simple inspection method that is widely used in various industrial inspections. However, for high-temperature alloys, which have coarse grains and are prone to various microscopic defects, the limitations of visual inspection become particularly obvious. In particular, for tiny or deep strengthening phase segregation bands, visual inspection is often difficult to detect due to their small size and hidden location.

[0004] In addition, the microstructure of high-temperature alloy materials is complex. In addition to the strengthening phase segregation bands, there may be other types of defects, such as cracks, inclusions, pores, etc. These defects may not be obvious in appearance, and in some cases, they are difficult to observe directly even with a high-power magnifying glass or microscope. Therefore, it is difficult to make a comprehensive and accurate assessment of the internal quality of high-temperature alloy materials by visual inspection alone.

[0005] Therefore, in the manufacturing process of engine turbine blades, how to effectively inspect and eliminate turbine blades with severe strengthening phase segregation remains an urgent problem to be solved. Summary of the invention

[0006] In order to overcome the defects of the above-mentioned prior art, the purpose of the present invention is to provide an electrochemical detection method for alloy turbine blade strengthening phase segregation bands to solve the technical problem in the prior art that the strengthening phase segregation bands cannot be detected, resulting in low accuracy of the detection results.

[0007] The present invention is achieved through the following technical solutions:

[0008] The present invention provides an electrochemical detection method for strengthening phase segregation bands of alloy turbine blades, comprising the following process:

[0009] Protect and insulate the turbine blade tenon and blade crown area, and degrease and clean the blades after protection and insulation;

[0010] The cleaned blades are used as anodes and electrochemically treated in a mixed solution of phosphoric acid and sulfuric acid;

[0011] The electrochemically treated leaves are deashed in hydrochloric acid and nitric acid solutions;

[0012] The blades after dust removal are placed in a sodium carbonate solution for neutralization, the neutralized blades are cleaned and dried, and the strengthening phase segregation strips on the surface of the alloy turbine blades are obtained through irradiation detection.

[0013] Preferably, in the step of degreasing the blades after protection and insulation, the blades are placed in a degreasing solution, wherein the operating temperature of the degreasing solution is 60 to 80° C. and the placement time is 20 to 30 minutes.

[0014] Preferably, the oil removal solution comprises sodium phosphate, sodium carbonate and sodium silicate, wherein the concentration of sodium phosphate is 40-60 g / L; the concentration of sodium carbonate is 40-60 g / L; and the concentration of sodium silicate is 20-30 g / L.

[0015] Preferably, the leaves after oil removal are washed with hot water and running cold water in sequence;

[0016] During the hot water washing process, the leaves are washed in hot water at 60 to 80°C for 0.5 to 2 minutes;

[0017] During the running cold water washing process, wash the leaves in running cold water for 0.5 to 1 min.

[0018] Preferably, the cleaned blade is used as an anode, and in the step of electrochemical treatment in a mixed solution of phosphoric acid and sulfuric acid, the concentration of phosphoric acid is 700-900 g / L; the concentration of sulfuric acid is 200-400 g / L, wherein the current density during the electrochemical treatment is 50-80 A / dm 2 The temperature of electrochemical treatment is 30-45°C and the operation time is 3-5 minutes. After electrochemical treatment, the leaves are washed in running cold water for 0.5-1 minute.

[0019] Preferably, in the step of removing dust from the electrochemically treated blades in a hydrochloric acid and nitric acid solution, the dedusting solution includes nitric acid and hydrochloric acid, wherein the concentration of the nitric acid is 300-400 g / L; the concentration of the hydrochloric acid is 2-5 g / L; wherein the operating temperature of the dedusting solution is 30-40°C, and the operating time is 1-5 min; after dedusting, the blades are washed in running cold water for 0.5-1 min.

[0020] Preferably, in the step of placing the dust-free leaves in a sodium carbonate solution for neutralization, the neutralization solution is sodium carbonate, wherein the concentration of the sodium carbonate is 40 to 60 g / L; and the operation time of the neutralization solution is 1 to 5 minutes.

[0021] Preferably, in the step of washing the neutralized leaves, the leaves are washed with running cold water and hot water in sequence;

[0022] During the running cold water washing process, the leaves are washed in running cold water for 0.5 to 1 min;

[0023] During the hot water washing process, the leaves are washed in hot water at 60 to 80°C for 0.5 to 2 minutes.

[0024] Preferably, the cleaned blades are dried using compressed air.

[0025] Preferably, in the step of obtaining the strengthening phase segregation bands on the surface of the alloy turbine blade by irradiation detection, the irradiation intensity ranges from 2000-2200Lx.

[0026] Compared with the prior art, the present invention has the following beneficial technical effects:

[0027] The present invention provides an electrochemical detection method for strengthening phase segregation bands of alloy turbine blades, which includes protecting and insulating the tenon and blade crown area of ​​the turbine blade, degreasing and cleaning the blades after protection and insulation; using the cleaned blades as anodes, and electrochemically treating them in a mixed solution of phosphoric acid and sulfuric acid; removing dust from the electrochemically treated blades in hydrochloric acid and nitric acid solutions; placing the dedusted blades in a sodium carbonate solution for neutralization, cleaning the neutralized blades, drying them, and obtaining strengthening phase segregation bands on the surface of the alloy turbine blades through irradiation detection; the present invention can form a specific electrochemical reaction layer on the blade surface by electrochemically treating the turbine blades, and the reaction layer can highlight the characteristics of the strengthening phase segregation bands, thereby improving the precision and accuracy of the detection. After a series of subsequent treatments, the electrochemically treated blades can finally intuitively and clearly display the strengthening phase segregation bands under irradiation detection, which is convenient for observation and analysis.

[0028] Furthermore, before the electrochemical test, the tenon and blade crown area of ​​the turbine blade are protected and insulated to effectively prevent the current from damaging these key areas. This not only ensures the safety of the test process, but also avoids the degradation or damage of the blade performance caused by the test.

[0029] Furthermore, compared with traditional visual inspection or other inspection methods, the electrochemical detection method can identify the strengthening phase segregation bands more quickly, thereby improving the detection efficiency and reducing the detection cost.

[0030] Furthermore, by accurately detecting the strengthening phase segregation bands, turbine blades with severe segregation can be discovered and eliminated in a timely manner, avoiding blade failure or safety accidents caused by material defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a flow chart of the electrochemical detection method of the strengthening phase segregation band of the alloy turbine blade in an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0033] The object of the present invention is to provide an electrochemical detection method for alloy turbine blade strengthening phase segregation bands, so as to solve the technical problem in the prior art that the strengthening phase segregation bands cannot be detected, resulting in low accuracy of the detection results.

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0035] See also Figure 1 The present invention provides an electrochemical detection method for strengthening phase segregation bands of alloy turbine blades, comprising the following process:

[0036] Step 1, protecting and insulating the tenon and blade crown area of ​​the turbine blade, and degreasing and cleaning the blade after protection and insulation;

[0037] Specifically, in the step of degreasing the blades after protection and insulation, the blades are placed in a degreasing solution, wherein the operating temperature of the degreasing solution is 60 to 80° C. and the placement time is 20 to 30 minutes.

[0038] The main purpose of the protective insulation treatment in the present invention is to prevent the current from causing damage to the tenon and blade crown area of ​​the turbine blade during the subsequent electrochemical treatment process. By applying insulating materials or performing other insulation treatments on the tenon and blade crown area, these areas can be effectively isolated from the current, ensuring the safety and accuracy of the detection process.

[0039] The operating temperature of the degreasing solution in the present invention is controlled at 60-80° C. This temperature range is conducive to the dissolution and separation of oils and fats. A higher temperature can accelerate the movement of oil molecules, making them more easily fall off from the surface of the leaves.

[0040] The oil removal solution includes sodium phosphate, sodium carbonate and sodium silicate, wherein the concentration of sodium phosphate is 40-60 g / L; the concentration of sodium carbonate is 40-60 g / L; and the concentration of sodium silicate is 20-30 g / L.

[0041] Among them, the leaves after degreasing are washed with hot water and running cold water in sequence;

[0042] During the hot water washing process, the leaves are washed in hot water at 60 to 80°C for 0.5 to 2 minutes;

[0043] During the running cold water washing process, wash the leaves in running cold water for 0.5 to 1 min.

[0044] Step 2, using the cleaned blade as an anode and performing electrochemical treatment in a mixed solution of phosphoric acid and sulfuric acid;

[0045] Specifically, the cleaned blade is used as an anode, and in the step of electrochemical treatment in a mixed solution of phosphoric acid and sulfuric acid, the concentration of phosphoric acid is 700-900 g / L; the concentration of sulfuric acid is 200-400 g / L, wherein the current density during the electrochemical treatment is 50-80 A / dm 2 The temperature of electrochemical treatment is 30-45°C and the operation time is 3-5 minutes. After electrochemical treatment, the leaves are washed in running cold water for 0.5-1 minute.

[0046] In the electrochemical treatment process of the present invention, the blade is used as an anode and is placed in an electrolyte solution together with a cathode, and a specific electrochemical reaction occurs on the surface of the blade by applying an electric current.

[0047] Phosphoric acid in the present invention can react with certain components on the surface of the blade to generate soluble phosphates, thereby removing pollutants or defects on the surface. Sulfuric acid has strong oxidizing properties and can promote oxidation reactions on the surface of the blade, further removing impurities and defects on the surface.

[0048] Step 3, removing dust from the electrochemically treated leaves in a hydrochloric acid or nitric acid solution;

[0049] Specifically, in the step of removing dust from the electrochemically treated blades in a hydrochloric acid and nitric acid solution, the dedusting solution includes nitric acid and hydrochloric acid, wherein the concentration of the nitric acid is 300-400 g / L; the concentration of the hydrochloric acid is 2-5 g / L; wherein the operating temperature of the dedusting solution is 30-40°C, and the operating time is 1-5 min; after dedusting, the blades are washed in running cold water for 0.5-1 min.

[0050] In the present invention, nitric acid (HNO3) is a strong oxidizing acid with strong dissolving properties. In the deashing solution, the concentration of nitric acid is controlled at 300-400 g / L, and this concentration range can ensure that nitric acid and the ash on the surface of the leaves undergo a sufficient chemical reaction. Nitric acid can react with impurities such as metal oxides and carbonates in the ash to generate soluble nitrates, thereby dissolving and removing them from the surface of the leaves. The strong oxidizing property of nitric acid can also promote the oxidation reaction on the surface of the leaves, further accelerating the dissolution process of the ash. Hydrochloric acid (HCl) is also a strong acid, but its main function is to adjust the pH value of the deashing solution and enhance the dissolving effect of nitric acid. In the deashing solution, the concentration of hydrochloric acid is controlled at 2-5 g / L, and this concentration range can ensure that hydrochloric acid and nitric acid work synergistically and improve the efficiency of deashing. Hydrochloric acid can react with metal ions in the ash to generate soluble chlorides, thereby further promoting the dissolution of the ash.

[0051] Step 4, placing the dust-free blades in a sodium carbonate solution for neutralization, washing the neutralized blades, drying them, and obtaining the strengthening phase segregation bands on the surface of the alloy turbine blades through irradiation detection.

[0052] Specifically, in the step of placing the dust-free leaves in a sodium carbonate solution for neutralization, the neutralization solution is sodium carbonate, wherein the concentration of the sodium carbonate is 40 to 60 g / L; and the operation time of the neutralization solution is 1 to 5 minutes.

[0053] Wherein, in the step of washing the neutralized leaves, the leaves are washed with running cold water and hot water in sequence;

[0054] During the running cold water washing process, the leaves are washed in running cold water for 0.5 to 1 min;

[0055] During the hot water washing process, the leaves are washed in hot water at 60 to 80°C for 0.5 to 2 minutes.

[0056] In the present invention, the cleaned blades are dried with compressed air; in the step of obtaining the strengthening phase segregation strips on the surface of the alloy turbine blades through irradiation detection, the irradiation intensity ranges from 2000 to 2200 Lx.

[0057] In the present invention, in the dust removal step, acidic substances such as hydrochloric acid and nitric acid may remain on the blade surface. Sodium carbonate (Na2CO3), as an alkaline substance, can react with these acidic substances to generate sodium chloride (NaCl), sodium nitrate (NaNO3) and water and carbon dioxide (CO2). This ensures the balance of the pH value on the blade surface and prevents further corrosion of the blade by acidic substances.

[0058] The concentration of sodium carbonate solution is 40-60g / L, which can ensure effective neutralization with acidic substances without causing unnecessary damage to leaves due to excessive concentration. The operation time of the neutralization solution is 1-5 minutes, ensuring that the neutralization reaction is fully carried out and not excessive.

[0059] The present invention obtains the strengthening phase segregation bands on the surface of the alloy turbine blade by irradiation detection, and this step is mainly based on optical principles. The irradiation intensity ranges from 2000-2200Lx, which ensures that the illumination of the blade surface is sufficient and uniform during the detection process. When the light is irradiated to the blade surface, due to the differences in composition, structure and properties between the strengthening phase segregation bands and the matrix material, different reflection, scattering and absorption effects will be produced on the light. By observing and analyzing these optical phenomena, the strengthening phase segregation bands on the blade surface can be accurately identified and located.

[0060] Example 1

[0061] This embodiment provides an electrochemical detection method for strengthening phase segregation bands of alloy turbine blades, comprising the following steps:

[0062] S1, the tenon and the crown area of ​​the turbine blade are treated with protective insulation to prevent current damage in subsequent treatment. After that, the blade is placed in a degreasing solution containing 40g / L sodium phosphate, 40g / L sodium carbonate and 20g / L sodium silicate, with an operating temperature of 60°C and a placement time of 20min. After degreasing, the blade is washed with 60°C hot water for 0.5min and running cold water for 0.5min.

[0063] S2, the cleaned blade is used as the anode and placed in a mixture of phosphoric acid (700g / L) and sulfuric acid (200g / L) at a current density of 50A / dm 2 The treatment temperature was 30°C and the operation time was 3 min. After electrochemical treatment, the leaves were washed in running cold water for 0.5 min.

[0064] S3, the electrochemically treated leaves were placed in a mixed solution of nitric acid (300 g / L) and hydrochloric acid (2 g / L), the operating temperature was 30°C, and the treatment time was 1 min. After removing the dust, the leaves were washed in running cold water for 0.5 min.

[0065] S4, the dust-free blades were placed in a sodium carbonate solution (40 g / L) for neutralization for 1 min, and then washed with running cold water for 0.5 min and 60°C hot water for 0.5 min. After the blades were dried with compressed air, they were irradiated and tested at an irradiation intensity of 2000 Lx to obtain the strengthening phase segregation bands on the surface of the alloy turbine blades.

[0066] Example 2

[0067] This embodiment provides an electrochemical detection method for strengthening phase segregation bands of alloy turbine blades, comprising the following steps:

[0068] L1, the blades are protected and insulated, and then placed in a degreasing solution (sodium phosphate 60g / L, sodium carbonate 60g / L, sodium silicate 30g / L, operating temperature 80℃, placement time 30min). After degreasing, the blades are washed in 80℃ hot water for 2min and running cold water for 1min.

[0069] L2, the blade is used as the anode and treated in a mixture of phosphoric acid (900 g / L) and sulfuric acid (400 g / L) at a current density of 80 A / dm 2 The treatment temperature was 45°C and the operation time was 5 min. Afterwards, the leaves were washed in running cold water for 1 min.

[0070] L3, the leaves were deashed in a mixed solution of nitric acid (400g / L) and hydrochloric acid (5g / L), the operating temperature was 40℃, and the treatment time was 5min. After deashing, the leaves were washed in running cold water for 1min. Then, the leaves were placed in a sodium carbonate solution (60g / L) for 5min, and then washed in running cold water for 1min and 80℃ hot water for 2min. After the leaves were dried, they were tested at an irradiation intensity of 2100Lx.

[0071] Example 3

[0072] Z1, the tenon and the crown of the blade are protected and insulated, and then placed in a degreasing solution (sodium phosphate 50g / L, sodium carbonate 50g / L, sodium silicate 25g / L, operating temperature 70℃, placement time 25min). After degreasing, the blades are washed with 70℃ hot water for 1.5min and running cold water for 0.75min.

[0073] Z2, the blade is used as the anode and treated in a mixture of phosphoric acid (800 g / L) and sulfuric acid (300 g / L) at a current density of 65 A / dm 2 The treatment temperature was 35°C and the operation time was 4 min. After electrochemical treatment, the leaves were washed in running cold water for 0.75 min.

[0074] Z3, the leaves were deashed in a mixed solution of nitric acid (350g / L) and hydrochloric acid (3.5g / L), the operating temperature was 35℃, and the treatment time was 3min. After deashing, the leaves were washed in running cold water for 0.75min. Then, the leaves were placed in a sodium carbonate solution (50g / L) for 3min, and then washed in running cold water for 0.75min and 70℃ hot water for 1.5min. After the leaves were dried, they were irradiated and tested at an irradiation intensity of up to 2200Lx.

[0075] In summary, the present invention provides an electrochemical detection method for the strengthening phase segregation band of an alloy turbine blade, by protecting and insulating the tenon and the blade crown area of ​​the turbine blade, degreasing and cleaning the blade after protection and insulation; using the cleaned blade as an anode, electrochemically treating it in a mixture of phosphoric acid and sulfuric acid; removing dust from the electrochemically treated blade in a hydrochloric acid and nitric acid solution; placing the dedusted blade in a sodium carbonate solution for neutralization, cleaning the neutralized blade, drying it, and obtaining the strengthening phase segregation band on the surface of the alloy turbine blade through irradiation detection; the present invention can form a specific electrochemical reaction layer on the blade surface by electrochemically treating the turbine blade, and the reaction layer can highlight the characteristics of the strengthening phase segregation band, thereby improving the precision and accuracy of the detection. After a series of subsequent treatments, the electrochemically treated blade can finally intuitively and clearly display the strengthening phase segregation band under irradiation detection, which is convenient for observation and analysis.

[0076] The present invention adopts a safe, reliable and efficient electrochemical inspection method for strengthening phase segregation stripes to inspect the blade body area, which can effectively identify the segregation of strengthening phase stripes and promptly eliminate turbine blades with strengthening phase segregation stripes that exceed the standard, thereby ensuring the reliability and safety of the engine.

[0077] The present invention performs protective insulation treatment on the tenon and blade crown area of ​​the turbine blade before electrochemical detection, effectively preventing the current from damaging these key areas. This not only ensures the safety of the detection process, but also avoids the degradation or damage of the blade performance caused by the detection. Compared with traditional visual inspection or other inspection methods, the electrochemical detection method can identify the strengthening phase segregation band more quickly, thereby improving the detection efficiency and reducing the detection cost. By accurately detecting the strengthening phase segregation band, turbine blades with severe segregation can be discovered and eliminated in a timely manner, avoiding blade failure or safety accidents caused by material defects.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. An electrochemical detection method for strengthening phase segregation bands of alloy turbine blades, characterized in that: The process includes the following: Protect and insulate the turbine blade tenon and blade crown area, and degrease and clean the blades after protection and insulation; The cleaned blades are used as anodes and electrochemically treated in a mixed solution of phosphoric acid and sulfuric acid; The electrochemically treated leaves are deashed in hydrochloric acid and nitric acid solutions; The blades after dust removal are placed in a sodium carbonate solution for neutralization, the neutralized blades are cleaned and dried, and the strengthening phase segregation strips on the surface of the alloy turbine blades are obtained through irradiation detection.

2. The electrochemical detection method of the strengthening phase segregation band of the alloy turbine blade according to claim 1 is characterized in that: In the step of degreasing the blades after protection and insulation, the blades are placed in a degreasing solution, wherein the operating temperature of the degreasing solution is 60-80° C. and the placement time is 20-30 minutes.

3. The electrochemical detection method of the strengthening phase segregation band of the alloy turbine blade according to claim 1 is characterized in that: The degreasing solution comprises sodium phosphate, sodium carbonate and sodium silicate, wherein the concentration of sodium phosphate is 40-60 g / L; the concentration of sodium carbonate is 40-60 g / L; and the concentration of sodium silicate is 20-30 g / L.

4. The electrochemical detection method of the strengthening phase segregation band of the alloy turbine blade according to claim 1 is characterized in that: After degreasing, the blades are washed with hot water and running cold water in turn; During the hot water washing process, the leaves are washed in hot water at 60 to 80°C for 0.5 to 2 minutes; During the running cold water washing process, wash the leaves in running cold water for 0.5 to 1 min.

5. The electrochemical detection method of the strengthening phase segregation band of the alloy turbine blade according to claim 1 is characterized in that: In the step of using the cleaned blade as an anode and performing electrochemical treatment in a mixed solution of phosphoric acid and sulfuric acid, the concentration of phosphoric acid is 700-900 g / L; the concentration of sulfuric acid is 200-400 g / L, and the current density during the electrochemical treatment is 50-80 A / dm 2 The temperature of electrochemical treatment is 30-45°C and the operation time is 3-5 minutes. After electrochemical treatment, the leaves are washed in running cold water for 0.5-1 minute.

6. The electrochemical detection method of the strengthening phase segregation band of the alloy turbine blade according to claim 1 is characterized in that: In the step of removing dust from the electrochemically treated blades in a hydrochloric acid and nitric acid solution, the dedusting solution includes nitric acid and hydrochloric acid, wherein the concentration of the nitric acid is 300-400 g / L; the concentration of the hydrochloric acid is 2-5 g / L; wherein the operating temperature of the dedusting solution is 30-40° C., and the operating time is 1-5 min; after dedusting, the blades are washed in running cold water for 0.5-1 min.

7. The electrochemical detection method of strengthening phase segregation bands of alloy turbine blades according to claim 1 is characterized in that: In the step of placing the dust-free leaves in a sodium carbonate solution for neutralization, the neutralization solution is sodium carbonate, wherein the concentration of the sodium carbonate is 40-60 g / L; and the operation time of the neutralization solution is 1-5 minutes.

8. The electrochemical detection method of strengthening phase segregation bands of alloy turbine blades according to claim 1 is characterized in that: In the step of washing the neutralized leaves, the leaves are washed with running cold water and hot water in sequence; During the running cold water washing process, the leaves are washed in running cold water for 0.5 to 1 min; During the hot water washing process, the leaves are washed in hot water at 60 to 80°C for 0.5 to 2 minutes.

9. The electrochemical detection method of strengthening phase segregation bands of alloy turbine blades according to claim 1 is characterized in that: Use compressed air to dry the cleaned leaves.

10. The electrochemical detection method of strengthening phase segregation band of alloy turbine blade according to claim 1, characterized in that: In the step of obtaining the strengthening phase segregation bands on the surface of the alloy turbine blade by irradiation detection, the irradiation intensity ranges from 2000-2200Lx.

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