Nickel-based alloy rotor defect detection method and device, electronic equipment and medium

Abstract

The embodiment of the invention relates to the technical field of defect detection of nickel-based alloy rotors, and provides a defect detection method and device of a nickel-based alloy rotor, electronic equipment and a medium, and the method comprises the following steps: determining a detected area of the nickel-based alloy rotor; dividing the detected area into a plurality of thickness subareas along the thickness direction of the nickel-based alloy rotor; determining the detection sensitivity corresponding to each thickness partition according to a preset sensitivity requirement; and based on the detection sensitivity corresponding to each thickness partition, performing ultrasonic detection on each thickness partition to obtain a corresponding defect detection result. According to the embodiment of the invention, a detection effect superior to that of ultrasonic detection under the same detection sensitivity can be obtained, ultrasonic detection under higher detection sensitivity of other areas can be realized while the detection sensitivity of the core part of the rotor is ensured, the operability is high, and meanwhile, the defect detection sensitivity and the defect detection accuracy of the whole rotor are improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of defect detection of nickel-based alloy rotors, and in particular to a defect detection method and device, electronic equipment, and medium for nickel-based alloy rotors. Background Art

[0002] Currently, thermal power generation dominates the energy mix, with efficiency and clean energy being one of its primary development priorities. Ultra-supercritical technology can improve boiler thermal efficiency, reduce coal consumption and pollutant emissions, and contribute to achieving sustainable development goals. Currently, the superheated steam temperature of ultra-supercritical units generally ranges from 600°C to 620°C. The material used to manufacture turbine rotors is primarily martensitic heat-resistant steel. To further improve unit thermal efficiency and reduce pollutant emissions, the superheated steam temperature needs to be increased. However, when superheated steam temperatures reach 700°C or above, the performance of rotors made of martensitic heat-resistant steel no longer meets service requirements. Consequently, nickel-based alloys are required for key unit components, such as turbine rotors. Because turbine rotors are subjected to high temperatures, high pressures, and significant stresses during service, large dimensional defects within them can lead to rotor failure, such as cracking or fatigue fracture, potentially causing serious safety incidents. Therefore, non-destructive testing of rotors is crucial for ensuring product quality and safe unit operation.

[0003] Currently, ultrasonic testing is the primary method used to detect internal rotor defects. The Chinese Machinery Industry Standard JB / T1-1581-2014, "Ultrasonic Testing Methods for Steam Turbine and Turbogenerator Rotor and Main Shaft Forgings," recommends ultrasonic testing after final heat treatment to assess product quality. This typically uses a longitudinal wave straight probe with a nominal frequency of 2MHz to 5MHz, and is conducted when the forging material attenuation coefficient is no greater than 4dB / m. The testing sensitivity should be sufficient to detect defects with a minimum equivalent diameter specified in the forging technical specifications. The selection of this sensitivity is generally based on the standards or technical agreements agreed upon between the supplier and the buyer. The Chinese Machinery Industry Standard JB / T 7207-2014, "Technical Specifications for Steam Turbine Rotor Forgings Above 300MW," requires effective detection of defects with a minimum equivalent diameter of 1.6mm. The Chinese Machinery Industry Standard JB / T11030-2010, "Technical Specifications for Steam Turbine High- and Low-Pressure Composite Rotors for Forgings," similarly requires effective detection of defects with a minimum equivalent diameter of 1.6mm. In the above three industry standards, the rotor as a whole must meet the same detection sensitivity when undergoing ultrasonic testing. For nickel-based alloy rotor forgings, the core area has coarse grains and a large attenuation coefficient. When using high-frequency ultrasonic testing, ultrasonic waves are easily scattered, thereby consuming energy. At the same time, the signal-to-noise ratio of the core area of nickel-based alloy rotor forgings is relatively low, which can easily lead to missed detection or misjudgment. It is more appropriate to select a lower ultrasonic testing frequency to test the core area. Therefore, compared with the near-surface area, the detection sensitivity that can be met by the core area during ultrasonic testing is also lower. If the nickel-based alloy rotor as a whole is required to meet the same detection sensitivity requirements, when the detection sensitivity that can be achieved in the core area is used as the detection sensitivity of the rotor as a whole, the defect equivalent diameter that can be detected in the near-surface area is too large, and the detection sensitivity of the rotor as a whole is at a low level, which poses a safety hazard. Therefore, for nickel-based alloy rotors with a large attenuation coefficient, it is not appropriate to select the same detection sensitivity for the rotor as a whole. Summary of the Invention

[0004] The present disclosure aims to solve at least one of the problems existing in the prior art and provides a method and device for detecting defects in a nickel-based alloy rotor, an electronic device, and a medium.

[0005] In one aspect of the present disclosure, a defect detection method for a nickel-based alloy rotor is provided, the defect detection method comprising:

[0006] Determine the inspected area of the nickel-based alloy rotor;

[0007] Dividing the inspected area into a plurality of thickness zones along the thickness direction of the nickel-based alloy rotor;

[0008] Determining the detection sensitivity corresponding to each thickness zone according to a preset sensitivity requirement;

[0009] Based on the detection sensitivity corresponding to each thickness zone, ultrasonic detection is performed on each thickness zone to obtain corresponding defect detection results.

[0010] Optionally, performing ultrasonic testing on each thickness zone based on the detection sensitivity corresponding to each thickness zone to obtain a corresponding defect detection result includes:

[0011] determining the boundaries of each thickness zone according to the detection sensitivity corresponding to each thickness zone;

[0012] Based on the detection sensitivity corresponding to each thickness zone, the ultrasonic flaw detector is used to scan the scanning surface of the inspected area to obtain the reflection echo signals corresponding to each thickness zone;

[0013] The defect detection result is determined according to the reflected echo signal.

[0014] Optionally, determining the boundaries of each thickness zone according to the detection sensitivity corresponding to each thickness zone includes:

[0015] For each thickness zone, determining a thickness range that can satisfy the corresponding detection sensitivity;

[0016] The maximum thickness that can satisfy the detection sensitivity corresponding to each thickness zone is used as the boundary of the corresponding thickness zone.

[0017] Optionally, based on the detection sensitivity corresponding to each thickness zone, using an ultrasonic flaw detector to scan the scanning surface of the inspected area respectively to obtain the reflected echo signals corresponding to each thickness zone respectively, including:

[0018] taking each thickness zone as the current inspected zone in turn;

[0019] Scanning step: adjusting the working parameters of the ultrasonic flaw detector so that the detection accuracy of the ultrasonic flaw detector meets the detection sensitivity corresponding to the current inspected partition; based on a preset scanning width, using the probe of the ultrasonic flaw detector to scan the scanning surface of the inspected area multiple times to completely cover the current inspected partition, and obtaining corresponding reflected echo signals as reflected echo signals of the thickness partition corresponding to the current inspected partition, wherein there is an overlapping area between two adjacent scans, and the overlapping area meets the preset overlapping width requirement;

[0020] Repeat the scanning step until the reflected echo signals corresponding to all the thickness partitions are obtained.

[0021] Optionally, determining the defect detection result according to the reflected echo signal includes:

[0022] respectively determining the position and characteristics of the abnormal signal corresponding to each thickness partition;

[0023] According to the position and characteristics of the abnormal signal, the defects existing in each thickness zone and the specific properties of the defects are determined respectively.

[0024] Optionally, after determining the inspected area of the nickel-based alloy rotor, the defect detection method further comprises:

[0025] The scanned surface in the inspected area is pre-processed so that the roughness of the scanned surface meets preset requirements.

[0026] Another aspect of the present disclosure provides a defect detection device for a nickel-based alloy rotor, the defect detection device comprising:

[0027] A first determination module is used to determine the inspected area of the nickel-based alloy rotor;

[0028] A partitioning module, configured to divide the inspected area into a plurality of thickness partitions along the thickness direction of the nickel-based alloy rotor;

[0029] A second determination module is used to determine the detection sensitivity corresponding to each thickness zone according to a preset sensitivity requirement;

[0030] The detection module is used to perform ultrasonic detection on each thickness zone based on the detection sensitivity corresponding to each thickness zone to obtain a corresponding defect detection result.

[0031] Optionally, the device further includes a preprocessing module; the preprocessing module is used to preprocess the scanning surface in the inspected area after the first determination module determines the inspected area of the nickel-based alloy rotor, so that the roughness of the scanning surface meets preset requirements.

[0032] Another aspect of the present disclosure provides an electronic device, including:

[0033] at least one processor; and,

[0034] a memory communicatively connected to at least one processor; wherein,

[0035] The memory stores instructions that can be executed by at least one processor. The instructions are executed by the at least one processor so that the at least one processor can perform the defect detection method for the nickel-based alloy rotor described above.

[0036] Another aspect of the present disclosure provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the defect detection method for the nickel-based alloy rotor described above.

[0037] Another aspect of the present disclosure provides a computer program product, including a computer program, which implements the defect detection method for the nickel-based alloy rotor described above when the computer program is executed by a processor.

[0038] Compared with the prior art, the present invention divides the nickel-based alloy rotor as a whole into different thickness zones, and then performs ultrasonic detection on these thickness zones based on flexibly set different detection sensitivities, thereby achieving a detection effect that is better than ultrasonic detection under the same detection sensitivity. While ensuring the detection sensitivity of the rotor core, ultrasonic detection of other areas with higher detection sensitivity can be achieved, which has strong operability and improves the defect detection sensitivity and defect detection accuracy of the entire rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings, and these exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0040] Figure 1 This is a flow chart of a defect detection method for a nickel-based alloy rotor provided in one embodiment of the present disclosure;

[0041] Figure 2 A schematic diagram of partitions of a nickel-based alloy rotor provided in another embodiment of the present disclosure;

[0042] Figure 3 This is a schematic structural diagram of a defect detection device for a nickel-based alloy rotor provided in another embodiment of the present disclosure;

[0043] Figure 4 A schematic structural diagram of an electronic device provided in another embodiment of the present disclosure. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. However, it will be understood by those skilled in the art that in each embodiment of the present disclosure, many technical details are provided to enable readers to better understand the present disclosure. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present disclosure can be implemented. The division of the following embodiments is for the convenience of description and should not constitute any limitation on the specific implementation of the present disclosure. The various embodiments can be combined and referenced with each other under the premise that there is no contradiction.

[0045] One embodiment of the present disclosure relates to a defect detection method for a nickel-based alloy rotor, the process of which is as follows: Figure 1 As shown, it includes steps S110 to S140.

[0046] Step S110 , determining the inspected area of the nickel-based alloy rotor.

[0047] Specifically, the inspected area is usually the entire area of the nickel-based alloy rotor. Of course, the inspected area can also be a partial area of the nickel-based alloy rotor, and this embodiment is not limited to this.

[0048] Illustratively, in order to prevent foreign matter on the scanning surface in the inspected area from affecting the defect detection process of the nickel-based alloy rotor, such as affecting the movement of the ultrasonic probe or affecting the ultrasonic signal evaluation, after step S110, the defect detection method of the nickel-based alloy rotor also includes: pre-processing the scanning surface in the inspected area so that the roughness of the scanning surface meets preset requirements.

[0049] Specifically, pretreatment may include, but is not limited to, removing loose scale, paint, dirt, and other foreign matter from the scanned surface in the inspected area. The preset requirement for the roughness Ra of the scanned surface can be set based on actual needs. For example, the preset requirement can be set to no greater than 6.3 μm.

[0050] Step S120 : dividing the inspected area into a plurality of thickness zones along the thickness direction of the nickel-based alloy rotor.

[0051] For example, assuming that the cross section of the nickel-based alloy rotor is circular, when the inspected area is the entire area of the nickel-based alloy rotor, step S120 can divide the inspected area into n thickness partitions along the thickness direction of the nickel-based alloy rotor, such as Figure 2 As shown in Figure 1, the n thickness zones can be represented as zone 1, zone 2, ..., zone n-1, and zone n. Zones 1 to n-1 are all annular cylinders, and zone n is a cylinder.

[0052] Step S130 : determining the detection sensitivity corresponding to each thickness zone according to a preset sensitivity requirement.

[0053] Specifically, the preset sensitivity requirement can be determined based on the needs of both the supply and demand sides of the nickel-based alloy rotor. Each thickness zone can correspond to a different detection sensitivity to meet the different sensitivity requirements of different areas of the nickel-based alloy rotor. For example, Figure 2 As shown, area 1, area 2, ..., area n-1, and area n can correspond to detection sensitivity No. 1, detection sensitivity No. 2, ..., detection sensitivity No. n-1, and detection sensitivity No. n, respectively, wherein detection sensitivity No. 1 to detection sensitivity No. n can be different from each other.

[0054] In step S140 , ultrasonic testing is performed on each thickness zone based on the detection sensitivity corresponding to each thickness zone to obtain corresponding defect detection results.

[0055] Specifically, step S140 mainly utilizes different detection sensitivities to perform ultrasonic detection on each thickness zone, thereby obtaining defect detection results corresponding to each thickness zone.

[0056] Exemplarily, step S140 may include determining the boundaries of each thickness zone based on the detection sensitivity corresponding to each thickness zone. Based on the detection sensitivity corresponding to each thickness zone, an ultrasonic flaw detector is used to scan the inspection surface of the inspection area to obtain reflection echo signals corresponding to each thickness zone. Determining a defect detection result based on the reflection echo signals.

[0057] Specifically, in order to further improve the defect detection sensitivity of nickel-based alloy rotors, it is necessary to further clarify the boundaries of each thickness zone.

[0058] Exemplarily, the boundaries of each thickness partition are determined according to the detection sensitivity corresponding to each thickness partition, including: for each thickness partition, determining the thickness range that can meet its corresponding detection sensitivity; and taking the maximum thickness that can meet the detection sensitivity corresponding to each thickness partition as the boundary of the corresponding thickness partition.

[0059] For example, combining Figure 2, for area No. 1, under its corresponding detection sensitivity, that is, sensitivity No. 1, determine the thickness range that can meet sensitivity No. 1, and use the maximum thickness of this thickness range as the boundary of area No. 1. When determining the thickness range that can meet sensitivity No. 1, you can first set the gain, scanning speed and other working parameters of the ultrasonic flaw detector, and adjust its detection sensitivity to sensitivity No. 1. For example, if it can effectively detect defects with a minimum equivalent diameter of 1.6mm, then scan the standard test block until defects with an equivalent diameter of 1.6mm cannot be detected at a certain thickness, evaluate the signal-to-noise ratio to determine the maximum penetration depth, and the maximum penetration depth is the thickness range that can effectively detect defects with a minimum equivalent diameter of 1.6mm. The maximum thickness corresponding to the maximum penetration depth can be used as the boundary of area No. 1. Afterwards, a similar method can be used to obtain Figure 2 The boundary between area 2 and area n.

[0060] Exemplarily, based on the detection sensitivity corresponding to each thickness zone, an ultrasonic flaw detector is used to scan the scanning surface of the inspected area respectively to obtain the reflected echo signals corresponding to each thickness zone, including: taking each thickness zone as the current inspected zone in turn. Scanning step: adjusting the working parameters of the ultrasonic flaw detector so that the detection accuracy of the ultrasonic flaw detector meets the detection sensitivity corresponding to the current inspected zone; based on a preset scanning width, using the ultrasonic flaw detector probe to scan the scanning surface of the inspected area multiple times to completely cover the current inspected zone, obtaining the corresponding reflected echo signals as the reflected echo signals of the thickness zones corresponding to the current inspected zone, wherein there is an overlapping area between two adjacent scans, and the overlapping area meets the preset overlapping width requirement. Repeat the scanning step until the reflected echo signals corresponding to all thickness zones are obtained.

[0061] Specifically, the ultrasonic flaw detector may be a type A pulse reflection ultrasonic flaw detector, and a longitudinal wave straight probe with a nominal frequency of 2 MHz to 5 MHz may be used to improve detection accuracy.

[0062] For example, combining Figure 2 First, take area 1 as the current inspected area, and then scan it using the scanning step to obtain the reflected echo signal corresponding to area 1. The scanning step of area 1 specifically includes: adjusting the working parameters of the ultrasonic flaw detector so that the detection accuracy of the ultrasonic flaw detector meets the detection sensitivity corresponding to area 1, that is, sensitivity 1, and then adjusting the working parameters such as the scanning line ratio and gain of the ultrasonic flaw detector. Based on the preset scanning width, the probe of the ultrasonic flaw detector is used to fully scan the scanning surface of the inspected area to cover area 1. Among them, if Figure 2As shown, the scanned surface of the inspected area is generally the outer surface of a nickel-based alloy rotor perpendicular to its thickness. A comprehensive scan of the scanned surface can be achieved by performing multiple scans in rows or columns. The scanned areas corresponding to two adjacent scans overlap, and the overlap meets a preset overlap width requirement, such as no less than 15% of the preset scan width, to further improve the comprehensiveness and accuracy of the inspection.

[0063] After obtaining the reflected echo signal corresponding to area 1, areas 2 to n are taken as the current inspected areas in sequence, and the scanning steps of area 1 are replaced with the scanning steps for areas 2 to n in sequence, so that the reflected echo signals corresponding to areas 2 to n can be obtained.

[0064] In particular, when using the probe of an ultrasonic flaw detector to scan the surface of the inspected area, an appropriate amount of coupling agent such as glycerin can be applied between the probe and the scanned surface to improve the detection performance and ensure the accuracy of the test results.

[0065] Exemplarily, determining the defect detection result based on the reflected echo signal includes: determining the location and characteristics of the abnormal signal corresponding to each thickness zone, and determining the presence of defects in each thickness zone and the specific nature of the defects based on the location and characteristics of the abnormal signal.

[0066] For example, combining Figure 2 After obtaining the reflected echo signals corresponding to areas 1 to n, we can first determine whether there are abnormal signals in the reflected echo signals corresponding to areas 1 to n. If there are abnormal signals, record the positions and characteristics of the abnormal signals. Based on the correspondence between the abnormal signals and the defects, determine whether there are defects in areas 1 to n and the specific nature of the defects.

[0067] In order to enable those skilled in the art to better understand the above embodiment, a specific example is provided below for description.

[0068] A method for detecting defects in a nickel-based alloy rotor includes steps 1 to 17.

[0069] Step 1: Determine the area to be inspected, which is the entire nickel-based alloy rotor.

[0070] Step 2: Pre-treat the scanning surface of the nickel-based alloy rotor to remove loose oxide scale, paint, dirt and other foreign matter that may affect the movement of the probe or the signal evaluation, so that the roughness Ra of the surface is no more than 6.3μm.

[0071] Step 3: Select a Type A pulse reflection ultrasonic flaw detector with a longitudinal wave straight probe and a nominal frequency of 2.5 MHz.

[0072] Step 4: Divide the inspected area into two circular columns along the thickness direction of the nickel-based alloy rotor. The central area is a cylinder, and they are numbered from area 1 to area 3 from the outer surface to the center of the nickel-based alloy rotor.

[0073] Step 5: Based on the requirements of both the supply and demand sides, the detection sensitivity of area 1 is set to be able to effectively detect defects with a minimum equivalent diameter of 1.6 mm, and the detection sensitivity of area 2 is set to be able to effectively detect defects with a minimum equivalent diameter of 3.0 mm.

[0074] Step 6: Starting from Area 1, set the ultrasonic flaw detector's operating parameters, such as gain and scanning speed. Adjust the ultrasonic flaw detector's detection sensitivity to effectively detect defects with a minimum equivalent diameter of 1.6 mm. Scan the standard test block until no defects with an equivalent diameter of 1.6 mm can be detected at a certain thickness. Evaluate the signal-to-noise ratio to determine the maximum penetration depth. Use the maximum penetration depth as the boundary of Area 1. Then perform the same thickness partitioning operation on Area 2, and determine the maximum penetration depth as the boundary of Area 2.

[0075] Step 7: Design a standard test block based on the range of Area 3. Scan the standard test block to determine that the minimum defect size that can be detected in Area 3 is 3.5mm equivalent diameter. Set the detection sensitivity of Area 3 to be able to effectively detect defects with a minimum equivalent diameter of 3.5mm.

[0076] Step 8: Apply an appropriate amount of coupling agent, such as glycerin, between the ultrasonic flaw detector probe and the scanning surface of the nickel-based alloy rotor.

[0077] Step 9: Adjust the detection sensitivity of the ultrasonic flaw detector to effectively detect defects with a minimum equivalent diameter of 1.6 mm, and adjust the operating parameters of the ultrasonic flaw detector, such as the scanning line ratio and gain.

[0078] Step 10: Confirm the detectability of the nickel-based alloy rotor at the selected detection sensitivity to ensure that the rotor center signal-to-noise ratio is greater than or equal to 6dB.

[0079] Step 11: Perform a comprehensive and continuous scan of the entire outer cylindrical surface of the nickel-based alloy rotor, and detect the entire volume of the rotor as much as possible. The probe scanning speed should not exceed 150 mm / s. There should be a certain overlap between two adjacent scans, and the overlap width should not be less than 15% of the scan width.

[0080] Step 12: Read the reflected echo signal in area 1, record the location and characteristics of the abnormal signal, and analyze the data to determine whether there is a defect and the specific nature of the defect.

[0081] Step 13: Adjust the detection sensitivity of the ultrasonic flaw detector to effectively detect defects with a minimum equivalent diameter of 3.0 mm, and adjust the scanning line ratio, gain and other working parameters of the ultrasonic flaw detector.

[0082] Step 14: Perform detectability testing according to step 10, then scan the entire nickel-based alloy rotor according to step 11. Finally, read the reflected echo signal in area 2, record the location and characteristics of the abnormal signal, and analyze the data to determine whether there is a defect and the specific nature of the defect.

[0083] Step 15: Adjust the detection sensitivity of the ultrasonic flaw detector to effectively detect defects with a minimum equivalent diameter of 3.5 mm, and adjust the scanning line ratio, gain and other working parameters of the ultrasonic flaw detector.

[0084] Step 16: Perform detectability testing as in step 10, then scan the entire rotor as in step 11. Finally, read the reflected echo signal from area 3, record the location and characteristics of the abnormal signal, and analyze the data to determine whether there is a defect and the specific nature of the defect.

[0085] Step 17: After completing the ultrasonic testing of all thickness zones, i.e., zones 1 to 3, analyze whether the nickel-based alloy rotor is qualified based on the ultrasonic testing results, including the defect morphology and equivalent diameter corresponding to each thickness zone.

[0086] In area 1, single scattered defects with an equivalent diameter of less than 1.6 mm are not counted. If the noise height is less than 50% of the amplitude of the equivalent diameter of 1.6 mm, and there are defects with an equivalent diameter greater than 1.6 mm, it indicates that area 1 is unqualified.

[0087] In area No. 2, single scattered defects with an equivalent diameter of less than 3.0 mm are not counted. For all defects with an equivalent diameter between 3.0 mm and 3.5 mm, their axial, radial and circumferential positions are recorded and noted in the certificate of conformity. If the distance between two adjacent defects is not less than 10 times the equivalent diameter of the larger defect and the total number of defects does not exceed 3, then area No. 2 is qualified; otherwise, area No. 2 is unqualified. If there are defects with an equivalent diameter greater than 3.5 mm, then area No. 2 is unqualified.

[0088] In area No. 3, single scattered defects with an equivalent diameter of less than 3.5mm are not counted. For all defects with an equivalent diameter between 3.5mm and 4mm, their axial, radial and circumferential positions are recorded and noted in the certificate of conformity. If the distance between two adjacent defects is not less than 10 times the equivalent diameter of the larger defect and the total number of defects does not exceed 3, then area No. 3 is qualified; otherwise, area No. 3 is unqualified. If there are defects with an equivalent diameter greater than 4.0mm, then area No. 3 is unqualified.

[0089] Compared with the prior art, the defect detection method for the nickel-based alloy rotor provided in the embodiment of the present disclosure can obtain a detection effect better than that of ultrasonic detection under the same detection sensitivity by dividing the nickel-based alloy rotor as a whole into different thickness zones and then performing ultrasonic detection on these thickness zones based on flexibly set different detection sensitivities. While ensuring the detection sensitivity of the rotor core, ultrasonic detection of other areas with higher detection sensitivity can be achieved, which has strong operability and improves the defect detection sensitivity and defect detection accuracy of the rotor as a whole.

[0090] Another embodiment of the present disclosure relates to a defect detection device for a nickel-based alloy rotor, such as Figure 3 As shown, it includes a first determination module 310 , a partitioning module 320 , a second determination module 330 , and a detection module 340 .

[0091] The first determining module 310 is used to determine the inspected area of the nickel-based alloy rotor.

[0092] The partitioning module 320 is used to divide the inspected area into a plurality of thickness partitions along the thickness direction of the nickel-based alloy rotor.

[0093] The second determination module 330 is used to determine the detection sensitivity corresponding to each thickness zone according to a preset sensitivity requirement.

[0094] The detection module 340 is used to perform ultrasonic detection on each thickness zone based on the detection sensitivity corresponding to each thickness zone to obtain corresponding defect detection results.

[0095] Exemplarily, the defect detection device for a nickel-based alloy rotor further includes a preprocessing module configured to preprocess the scanned surface in the inspected area after the first determination module determines the inspected area of the nickel-based alloy rotor, so that the roughness of the scanned surface meets a preset requirement.

[0096] The specific implementation method of the defect detection device for the nickel-based alloy rotor provided in the embodiment of the present disclosure can be found in the defect detection method for the nickel-based alloy rotor provided in the embodiment of the present disclosure, and will not be repeated here.

[0097] Compared with the prior art, the defect detection device for the nickel-based alloy rotor provided in the embodiment of the present disclosure can obtain a detection effect better than that of ultrasonic detection under the same detection sensitivity by dividing the nickel-based alloy rotor as a whole into different thickness zones and then performing ultrasonic detection on these thickness zones based on flexibly set different detection sensitivities. While ensuring the detection sensitivity of the rotor core, ultrasonic detection of other areas with higher detection sensitivity can be achieved, which has strong operability and improves the defect detection sensitivity and defect detection accuracy of the rotor as a whole.

[0098] Another embodiment of the present disclosure relates to an electronic device, such as Figure 4 Shown, including:

[0099] at least one processor 401; and,

[0100] A memory 402 in communication with at least one processor 401; wherein,

[0101] The memory 402 stores instructions that can be executed by the at least one processor 401. The instructions are executed by the at least one processor 401 so that the at least one processor 401 can perform the defect detection method for the nickel-based alloy rotor described in the above embodiment.

[0102] The memory and processor are connected using a bus, which can include any number of interconnected buses and bridges. The bus connects various circuits of one or more processors and memories. The bus can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits. These are all well known in the art and are therefore not described further herein. The bus interface provides an interface between the bus and the transceiver. The transceiver can be a single component or multiple components, such as multiple receivers and transmitters, providing a unit for communicating with various other devices over a transmission medium. Data processed by the processor is transmitted over a wireless medium via an antenna. Furthermore, the antenna receives data and transmits it to the processor.

[0103] The processor is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions. Memory can be used to store data used by the processor when performing operations.

[0104] Another embodiment of the present disclosure relates to a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the defect detection method for the nickel-based alloy rotor described in the above embodiment.

[0105] That is, those skilled in the art will understand that all or part of the steps in the methods described in the above embodiments can be implemented by instructing related hardware through a program, which is stored in a storage medium and includes a number of instructions for causing a device (which may be a single-chip microcomputer, chip, etc.) or a processor to execute all or part of the steps in the methods described in the various embodiments of the present disclosure. The aforementioned storage medium includes: a USB flash drive, a mobile hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc., various media that can store program code.

[0106] Another embodiment of the present disclosure relates to a computer program product, including a computer program, which, when executed by a processor, implements the defect detection method for the nickel-based alloy rotor described in the above embodiment.

[0107] Those skilled in the art will appreciate that the above-mentioned embodiments are specific embodiments for implementing the present disclosure, and that in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present disclosure.

Claims

1. A method for detecting defects in a nickel-based alloy rotor, characterized in that: The defect detection method comprises: Determine the inspected area of the nickel-based alloy rotor; Dividing the inspected area into a plurality of thickness zones along the thickness direction of the nickel-based alloy rotor; Determining the detection sensitivity corresponding to each thickness zone according to a preset sensitivity requirement; Based on the detection sensitivity corresponding to each thickness zone, ultrasonic detection is performed on each thickness zone to obtain corresponding defect detection results.

2. The defect detection method according to claim 1, characterized in that: The ultrasonic detection is performed on each thickness zone based on the detection sensitivity corresponding to each thickness zone to obtain a corresponding defect detection result, including: determining the boundaries of each thickness zone according to the detection sensitivity corresponding to each thickness zone; Based on the detection sensitivity corresponding to each thickness zone, the ultrasonic flaw detector is used to scan the scanning surface of the inspected area to obtain the reflection echo signals corresponding to each thickness zone; The defect detection result is determined according to the reflected echo signal.

3. The defect detection method according to claim 2, characterized in that: Determining the boundaries of each thickness zone according to the detection sensitivity corresponding to each thickness zone includes: For each thickness zone, determining a thickness range that can satisfy the corresponding detection sensitivity; The maximum thickness that can satisfy the detection sensitivity corresponding to each thickness zone is used as the boundary of the corresponding thickness zone.

4. The defect detection method according to claim 2, characterized in that: The method of scanning the inspection surface of the inspected area using an ultrasonic flaw detector based on the detection sensitivity corresponding to each thickness zone to obtain reflection echo signals corresponding to each thickness zone includes: taking each thickness zone as the current inspected zone in turn; Scanning step: adjusting the working parameters of the ultrasonic flaw detector so that the detection accuracy of the ultrasonic flaw detector meets the detection sensitivity corresponding to the current inspected partition; based on a preset scanning width, using the probe of the ultrasonic flaw detector to scan the scanning surface of the inspected area multiple times to completely cover the current inspected partition, and obtaining corresponding reflected echo signals as reflected echo signals of the thickness partition corresponding to the current inspected partition, wherein there is an overlapping area between two adjacent scans, and the overlapping area meets the preset overlapping width requirement; Repeat the scanning step until the reflected echo signals corresponding to all the thickness partitions are obtained.

5. The defect detection method according to claim 2, characterized in that: The step of determining the defect detection result according to the reflected echo signal includes: respectively determining the position and characteristics of the abnormal signal corresponding to each thickness partition; According to the position and characteristics of the abnormal signal, the defects existing in each thickness zone and the specific properties of the defects are determined respectively.

6. The defect detection method according to any one of claims 1 to 5, characterized in that: After determining the inspected area of the nickel-based alloy rotor, the defect detection method further includes: The scanned surface in the inspected area is pre-processed so that the roughness of the scanned surface meets preset requirements.

7. A defect detection device for a nickel-based alloy rotor, characterized in that: The defect detection device comprises: A first determination module is used to determine the inspected area of the nickel-based alloy rotor; A partitioning module, configured to divide the inspected area into a plurality of thickness partitions along the thickness direction of the nickel-based alloy rotor; A second determination module is used to determine the detection sensitivity corresponding to each thickness zone according to a preset sensitivity requirement; The detection module is used to perform ultrasonic detection on each thickness zone based on the detection sensitivity corresponding to each thickness zone to obtain a corresponding defect detection result.

8. An electronic device, characterized in that: include: at least one processor; as well as, a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor. The instructions are executed by the at least one processor to enable the at least one processor to perform the defect detection method according to any one of claims 1 to 6.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the defect detection method according to any one of claims 1 to 6 is implemented.

10. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the defect detection method according to any one of claims 1 to 6 is implemented.

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