Engine blade vacuum heat treatment process health evaluation method and system

Abstract

The invention relates to an engine blade vacuum heat treatment process health evaluation method and system, belongs to the technical field of vacuum heat treatment process health evaluation, and solves the problem that the evaluation angle is not systematic and comprehensive enough in the prior art. Comprising the following steps: acquiring the operating temperature and vacuum degree of a vacuum furnace in each process stage in a vacuum heat treatment process in real time, and calculating to obtain temperature consistency index data and vacuum degree consistency index data; calculating the performance utilization rate, the quality qualification rate and the time utilization rate of the vacuum furnace after the heat treatment process based on the completion condition of the heat treatment process; calculating to obtain comprehensive efficiency index data of the vacuum furnace based on the performance utilization rate, the quality qualification rate and the time utilization rate; and calculating to obtain a health evaluation value of the heat treatment process based on the temperature consistency index data, the vacuum degree consistency index data and the comprehensive efficiency index data. And more systematic and comprehensive health evaluation of the heat treatment process is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum heat treatment process health assessment, and in particular to a method and system for vacuum heat treatment process health assessment of engine blades. Background Art

[0002] As the core component of aircraft engines, engine blades play an extremely important role, and their performance is directly related to the overall efficiency and reliability of the engine. Therefore, there are extremely strict requirements on the material properties and processing technology of the blades. The application of vacuum heat treatment technology in the manufacture of aircraft engine blades is developed based on the needs of improving blade performance, extending service life and ensuring its stability under extreme working conditions.

[0003] Most traditional evaluation methods are based on research and analysis of the material properties of the final product, and are limited to post-product quality inspections. The evaluation perspective is not systematic and comprehensive enough. Summary of the invention

[0004] In view of the above analysis, an embodiment of the present invention aims to provide a method and system for evaluating the health of an engine blade vacuum heat treatment process, so as to solve the problem that the evaluation angle of the prior art is not systematic and comprehensive enough.

[0005] On the one hand, an embodiment of the present invention provides a method for evaluating the health of an engine blade vacuum heat treatment process, comprising the following steps:

[0006] Real-time collection of the temperature and vacuum degree of the vacuum furnace during each process stage of the vacuum heat treatment process, and calculation of the temperature consistency index data and vacuum consistency index data;

[0007] Based on the completion of the heat treatment process, the performance utilization rate, quality pass rate, and time utilization rate of the vacuum furnace after the heat treatment process is run are calculated; based on the performance utilization rate, quality pass rate, and time utilization rate, the comprehensive efficiency index data of the vacuum furnace is calculated;

[0008] The health evaluation value of the heat treatment process is calculated based on the temperature consistency index data, vacuum consistency index data and overall efficiency index data.

[0009] Based on the further improvement of the above method, the temperature / vacuum consistency index data is calculated through the following steps:

[0010] Based on the temperature / vacuum degree collected at each temperature / vacuum degree detection point at time t, the standard deviation of the temperature / vacuum degree at each process stage is obtained, as well as the difference between the collected temperature / vacuum degree and the set value;

[0011] Based on the standard deviation and the difference, the deviation score of the actual temperature / vacuum degree in each process stage is calculated;

[0012] Based on the actual temperature / vacuum degree deviation scores at each process stage, temperature / vacuum degree consistency index data is obtained.

[0013] Based on the further improvement of the above method, the temperature / vacuum consistency index data S is calculated through the following steps:

[0014]

[0015] Among them, S j Indicates the actual temperature / vacuum deviation score of the jth process stage, W j The weight of the temperature / vacuum degree of the j-th process stage is represented by the ratio of the set temperature / vacuum degree of the j-th process stage at the middle time point to the maximum temperature / vacuum degree of the j-th process stage. N represents the total number of process stages, and j represents the sequence number of the process stage.

[0016] Based on the further improvement of the above method, the actual temperature / vacuum degree deviation score of each process stage is obtained using the following formula:

[0017]

[0018] Among them, A tj represents the difference between the temperature / vacuum degree collected at time t in the jth process stage and the set temperature / vacuum degree, T j Indicates the duration of the jth process stage, std j Represents the standard deviation calculated for all temperatures / vacuum degrees collected at the j-th process stage.

[0019] Based on the further improvement of the above method, the comprehensive performance index data is calculated through the following steps:

[0020] Based on the completion of the heat treatment process, the number of defective products, actual operation time and output of the vacuum furnace are obtained;

[0021] The quality pass rate is calculated based on the number of defective products, the time utilization rate is calculated based on the actual operation time of the vacuum furnace, and the performance utilization rate is calculated based on the output of the vacuum furnace;

[0022] The comprehensive performance index data is calculated based on the performance utilization rate, quality qualification rate and time utilization rate.

[0023] Based on the further improvement of the above method, the comprehensive performance index data is obtained using the following formula:

[0024] TEE=(W Q *Q+W P *P+WT *T)*100%

[0025] Among them, TEE represents the comprehensive performance index data, Q represents the quality qualification rate, P represents the performance utilization rate, T represents the time utilization rate, W Q , W P and W T are the weight coefficients of quality qualification rate, performance utilization rate and time utilization rate, respectively. Q +W P +W T =1.

[0026] Based on the further improvement of the above method, the performance utilization rate is obtained using the following formula:

[0027] P = (theoretical processing cycle * output) / actual operation time of vacuum furnace * 100%

[0028] Based on the further improvement of the above method, the time utilization rate is obtained using the following formula:

[0029] T=(vacuum furnace planned operation time / vacuum furnace actual operation time)*100%

[0030] Based on the further improvement of the above method, the health evaluation value of the heat treatment process is calculated by the following formula:

[0031] M CPHA =0.5*(1-S Ttotal )+X1*(1-S Vtotal )+X2*TEE

[0032] Among them, S Ttotal Indicates the temperature consistency index data, S Vtotal represents the vacuum consistency index data, TEE represents the vacuum furnace comprehensive efficiency index data, X1 and X2 represent S Vtotal And the weight parameters of TEE, X1 and X2 need to satisfy X1+X2=0.5.

[0033] On the other hand, an embodiment of the present invention provides an engine blade vacuum heat treatment process health evaluation system, including: a data acquisition and collection module, a vacuum heat treatment process health evaluation module, wherein:

[0034] Data acquisition module, used to acquire and collect the parameters of the vacuum furnace at each stage of the vacuum heat treatment process of the engine blade in real time;

[0035] The vacuum heat treatment process health evaluation module is used to obtain the health evaluation value of the vacuum heat treatment process of the engine blade, including: temperature consistency index module, vacuum consistency index module and comprehensive performance index module, among which:

[0036] The temperature consistency index module and the vacuum consistency index module are used to calculate the temperature / vacuum consistency index data based on the temperature / vacuum data collected in real time;

[0037] The comprehensive efficiency index module is used to calculate the performance utilization rate, quality qualification rate and time utilization rate of the vacuum furnace after the heat treatment process is run based on the completion status of the heat treatment process; and the comprehensive efficiency index data of the vacuum furnace is calculated based on the performance utilization rate, quality qualification rate and time utilization rate.

[0038] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0039] 1. Aiming at the limitations of traditional heat treatment process evaluation methods, especially the current situation that only focuses on the performance analysis of the final product material, this invention proposes a comprehensive and scientific vacuum heat treatment process health evaluation method. This method is no longer limited to post-product quality inspection, but expands the evaluation scope to the entire heat treatment process.

[0040] 2. Users can continuously optimize production parameters based on evaluation feedback, improve product quality and production efficiency, and achieve lean production.

[0041] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components;

[0043] Figure 1 It is a flow chart of the health assessment method of vacuum heat treatment process;

[0044] Figure 2 This is the block diagram of the vacuum heat treatment process health assessment system. DETAILED DESCRIPTION

[0045] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0046] A specific embodiment of the present invention discloses a method for evaluating the health of an engine blade vacuum heat treatment process, such as Figure 1 shown.

[0047] Before the heat treatment task begins, the user shall design the process for the heat treatment task based on historical experience and professional knowledge and technical reserves, including: entering the duration of different process stages, target temperature, target vacuum degree in the system, and setting in detail the vacuum furnace required for each task, the basic performance indicators and process parameters of each vacuum furnace;

[0048] A plurality of temperature detection points and a plurality of vacuum degree detection points are arranged in the vacuum furnace for collecting data, and the positions of the temperature detection points and the vacuum degree detection points do not change during the operation of the vacuum furnace.

[0049] The specific steps of the vacuum heat treatment process health evaluation method include: real-time collection of the temperature and vacuum degree of the vacuum furnace during each process stage of the vacuum heat treatment process, calculation to obtain temperature consistency index data and vacuum consistency index data; and ensuring the time synchronization and accuracy of the data.

[0050] Based on the completion of the heat treatment process, the performance utilization rate, quality pass rate, and time utilization rate of the vacuum furnace after the heat treatment process is run are calculated; based on the performance utilization rate, quality pass rate, and time utilization rate, the comprehensive efficiency index data of the vacuum furnace is calculated;

[0051] The health evaluation value of the heat treatment process is calculated based on the temperature consistency index data, vacuum consistency index data, and comprehensive efficiency index data.

[0052] Furthermore, the temperature / vacuum consistency index data is calculated through the following steps:

[0053] Based on the temperature / vacuum degree collected at each temperature / vacuum degree detection point at time t, the standard deviation of the temperature / vacuum degree at each process stage is obtained, as well as the difference between the collected temperature / vacuum degree and the set value;

[0054] Based on the standard deviation and the difference, the deviation score of the actual temperature / vacuum degree in each process stage is calculated;

[0055] Based on the actual temperature / vacuum degree deviation scores at each process stage, temperature / vacuum degree consistency index data is obtained.

[0056] It should be noted that the temperature / vacuum consistency index data S is calculated through the following steps:

[0057]

[0058] Among them, S j Indicates the actual temperature / vacuum deviation score of the jth process stage, W jIt indicates the weight of the temperature / vacuum degree of the jth process stage, which is the ratio of the set temperature / vacuum degree at the middle time point of the jth process stage to the highest temperature / vacuum degree of the jth process stage, N indicates the total number of each process stage, and j indicates the sequence number of the process stage. It should be noted that the closer the temperature / vacuum consistency index is to 0, the healthier and more reliable the temperature / vacuum degree of the process is.

[0059] The process stages include multiple heating and insulation stages and a final cooling stage; the set temperature and set vacuum degree of each process stage are set by the user based on historical experience, professional knowledge and technical reserves before the start of the heat treatment task.

[0060] Specifically, in this embodiment, the calculated temperature consistency index data is recorded as S Ttotal , the vacuum consistency index data is recorded as S Vtotal .

[0061] Furthermore, the actual temperature / vacuum degree deviation score of each process stage is obtained using the following formula:

[0062]

[0063] Among them, A tj represents the difference between the temperature / vacuum degree collected at time t in the jth process stage and the set temperature / vacuum degree, T j Indicates the duration of the jth process stage, std j represents the standard deviation calculated for all temperatures / vacuum degrees collected at the jth process stage. It should be noted that when collecting temperature and vacuum degree, the sampling frequency should be no less than 1 Hz, and the number of t is T j and the sampling frequency.

[0064] It should be noted that the comprehensive performance index data is calculated through the following steps:

[0065] Based on the completion of the heat treatment process, the number of defective products, actual operation time and output of the vacuum furnace are obtained;

[0066] The quality pass rate is calculated based on the number of defective products, the time utilization rate is calculated based on the actual operation time of the vacuum furnace, and the performance utilization rate is calculated based on the output of the vacuum furnace;

[0067] The comprehensive performance index data is calculated based on the performance utilization rate, quality qualification rate and time utilization rate.

[0068] Specifically, the vacuum furnace comprehensive efficiency index comprehensively considers the three key factors of the vacuum furnace's quality qualification rate, performance utilization rate, and time utilization rate, and comprehensively evaluates the health status of the vacuum heat treatment process based on process data. The vacuum furnace comprehensive efficiency index (Total Equipment Effectiveness, TEE) is obtained using the following formula:

[0069] TEE=(W Q *Q+W P *P+W T *T)*100%

[0070] Among them, Q represents the quality pass rate, that is, the proportion of defect-free products processed by the vacuum furnace; P represents the performance utilization rate, that is, the degree to which the vacuum furnace actually reaches the designed capacity; T represents the time utilization rate, that is, the ratio of the actual operation time of the vacuum furnace to the planned operation time, where:

[0071] Performance utilization rate P = (theoretical processing cycle * output) / actual operation time of vacuum furnace * 100%

[0072] Time utilization rate T = (vacuum furnace planned operation time / vacuum furnace actual operation time) * 100%;

[0073] Quality pass rate Q = (qualified product quality / total processing quality) * 100%;

[0074] Among them, the adjustable weight factor W Q , W P and W T are the weight coefficients of quality qualification rate, performance utilization rate and time utilization rate, respectively, to adapt to different production environments and specific needs; W Q +W P +W T =1, ensuring the rationality of weight distribution and making the evaluation more flexible and accurate.

[0075] For example, in the scenario of pursuing the ultimate product quality, W can be appropriately increased. Q When the production capacity is tight, W can be increased. P This scheme allows personalized adjustment of the importance of each indicator according to production goals and vacuum furnace characteristics, and can reasonably allocate W according to production goals and vacuum furnace maintenance strategies. Q , W P and W T The value of .

[0076] It should be noted that the comprehensive process health evaluation model M CPHA(Comprehensive Process Health Assessment Model), which comprehensively analyzes all indicators and comprehensively and three-dimensionally evaluates the vacuum heat treatment process of engine blades, including the following formulas:

[0077] M CPHA =0.5*(1-S Ttotal )+X1*(1-S Vtotal )+X2*TEE

[0078] Among them, S Ttotal Indicates the temperature consistency index data, S Vtotal represents the vacuum consistency index data, TEE represents the vacuum furnace comprehensive efficiency index data, X1 and X2 represent S Vtotal The weight parameters of TEE, X1 and X2, need to satisfy X1+X2=0.5. It should be noted that M CPHA The closer the calculated value is to 1, the healthier the vacuum heat treatment process is.

[0079] Compared with the prior art, this embodiment provides a comprehensive and scientific vacuum heat treatment process health evaluation method. This method is no longer limited to post-process product quality inspection, but extends the evaluation scope to the entire heat treatment process, and users can continuously optimize production parameters based on evaluation feedback, improve product quality and production efficiency, and achieve lean production.

[0080] A specific embodiment of the present invention discloses a health evaluation system for vacuum heat treatment process of engine blades, such as Figure 2 As shown, it includes: data acquisition and collection module, vacuum heat treatment process health evaluation module, among which:

[0081] Data acquisition module, used to acquire and collect the parameters of the vacuum furnace at each stage of the vacuum heat treatment process of the engine blade in real time;

[0082] The vacuum heat treatment process health evaluation module is used to obtain the health evaluation value of the engine blade thermal vacuum treatment process, including: temperature consistency index module, vacuum consistency index module and comprehensive performance index module, among which:

[0083] The temperature consistency index module and the vacuum consistency index module are used to calculate the temperature / vacuum consistency index data based on the temperature / vacuum data collected in real time;

[0084] The comprehensive efficiency index module is used to calculate the performance utilization rate, quality qualification rate and time utilization rate of the vacuum furnace after the heat treatment process is run based on the completion status of the heat treatment process; and the comprehensive efficiency index data of the vacuum furnace is calculated based on the performance utilization rate, quality qualification rate and time utilization rate.

[0085] It should be noted that the system and method of the present invention are based on the same inventive concept, and the specific contents can be referenced from each other, and will not be repeated here; including data collection process, vacuum heat treatment health evaluation process, etc.

[0086] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0087] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A method for evaluating the health of an engine blade vacuum heat treatment process, characterized in that: The steps include: Real-time collection of the temperature and vacuum degree of the vacuum furnace during each process stage of the vacuum heat treatment process, and calculation of the temperature consistency index data and vacuum consistency index data; Based on the completion of the heat treatment process, the performance utilization rate, quality qualification rate and time utilization rate of the vacuum furnace after the heat treatment process is run are calculated; Based on the performance utilization rate, quality qualification rate and time utilization rate, the comprehensive efficiency index data of the vacuum furnace is calculated; The health evaluation value of the heat treatment process is calculated based on the temperature consistency index data, vacuum consistency index data, and comprehensive efficiency index data.

2. The engine blade vacuum heat treatment process health evaluation method according to claim 1 is characterized in that: The temperature / vacuum consistency index data is calculated through the following steps: Based on the temperature / vacuum degree collected at each temperature / vacuum degree detection point at time t, the standard deviation of the temperature / vacuum degree at each process stage is obtained, as well as the difference between the collected temperature / vacuum degree and the set value; Based on the standard deviation and the difference, the deviation score of the actual temperature / vacuum degree in each process stage is calculated; Based on the actual temperature / vacuum degree deviation scores at each process stage, temperature / vacuum degree consistency index data is obtained.

3. The engine blade vacuum heat treatment process health evaluation method according to claim 2 is characterized in that: The temperature / vacuum consistency index data S is calculated by the following steps: Among them, A j Indicates the actual temperature / vacuum deviation score of the jth process stage, W j The weight of the temperature / vacuum degree of the j-th process stage is represented by the ratio of the set temperature / vacuum degree of the j-th process stage at the middle time point to the maximum temperature / vacuum degree of the j-th process stage. N represents the total number of process stages, and j represents the sequence number of the process stage.

4. The engine blade vacuum heat treatment process health evaluation method according to claim 2 or 3, characterized in that: The actual temperature / vacuum degree deviation score of each process stage is obtained using the following formula: Among them, A tj represents the difference between the temperature / vacuum degree collected at time t in the jth process stage and the set temperature / vacuum degree, T j Indicates the duration of the jth process stage, std j Represents the standard deviation calculated for all temperatures / vacuum degrees collected at the j-th process stage.

5. The engine blade vacuum heat treatment process health evaluation method according to claim 1, characterized in that: The comprehensive performance index data is calculated by the following steps: Based on the completion of the heat treatment process, the number of defective products, actual operation time and output of the vacuum furnace are obtained; The quality pass rate is calculated based on the number of defective products, and the time utilization rate is calculated based on the actual operation time of the vacuum furnace; Get performance utilization based on vacuum furnace output; The comprehensive performance index data is calculated based on the performance utilization rate, quality qualification rate and time utilization rate.

6. The engine blade vacuum heat treatment process health evaluation method according to claim 5, characterized in that: Use the following formula to get the overall performance index data: TEE=(W Q *Q+W P *P+W T *T)*100% Among them, TEE represents the comprehensive performance index data, Q represents the quality qualification rate, P represents the performance utilization rate, T represents the time utilization rate, W Q , W P and W T are the weight coefficients of quality qualification rate, performance utilization rate and time utilization rate, respectively. Q +W P +W T =1.

7. The engine blade vacuum heat treatment process health evaluation method according to claim 5, characterized in that: The performance utilization is obtained using the following formula: P = (theoretical processing cycle * output) / actual operation time of vacuum furnace * 100%.

8. The method for evaluating the health of an engine blade vacuum heat treatment process according to claim 5, characterized in that: The time utilization rate is obtained using the following formula: T = (vacuum furnace planned operating time / vacuum furnace actual operating time) * 100%.

9. The engine blade vacuum heat treatment process health evaluation method according to claim 1, characterized in that: The health evaluation value of the heat treatment process is calculated by the following formula: M CPHA =0.5*(1-S Ttotal )+X1*(1-S Vtotaj )+X2*TEE Among them, S Ttotal Indicates the temperature consistency index data, S Vtotal represents the vacuum consistency index data, TEE represents the vacuum furnace comprehensive efficiency index data, X1 and X2 represent S Vtotal And the weight parameters of TEE, X1 and X2 need to satisfy X1+X2=0.

5.

10. An engine blade vacuum heat treatment process health evaluation system, characterized in that: include: Data acquisition and collection module, vacuum heat treatment process health evaluation module, including: Data acquisition module, used to acquire and collect the parameters of the vacuum furnace at each stage of the vacuum heat treatment process of the engine blade in real time; The vacuum heat treatment process health evaluation module is used to obtain the health evaluation value of the vacuum heat treatment process of the engine blade, including: temperature consistency index module, vacuum consistency index module and comprehensive performance index module, among which: The temperature consistency index module and the vacuum consistency index module are used to calculate the temperature / vacuum consistency index data based on the temperature / vacuum data collected in real time; The comprehensive efficiency index module is used to calculate the performance utilization rate, quality qualification rate and time utilization rate of the vacuum furnace after the heat treatment process is run based on the completion status of the heat treatment process; and the comprehensive efficiency index data of the vacuum furnace is calculated based on the performance utilization rate, quality qualification rate and time utilization rate.

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