A DBD glue removal process optimization method and system based on characteristic frequency modulation

Abstract

This invention discloses a DBD (Dielectric Loss) debinding process optimization method and system based on characteristic frequency regulation. The method includes: using spectrum analysis to determine the dielectric loss characteristic frequency of ceramic green bodies under different states, obtaining the dielectric loss characteristic frequency range of the ceramic green bodies; adjusting the discharge parameters of the DBD treatment according to the dielectric loss characteristic frequency range; measuring the air gap field strength using a non-invasive method; adjusting the applied voltage through feedback control to ensure that the maximum value of the air gap field strength varies within a preset range; and reducing the applied power supply frequency while maintaining discharge intensity as the temperature increases. This effectively increases the number of discharge channels, improves the dielectric loss power of the green body, thereby significantly improving debinding efficiency and quality, and increasing production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of ceramic production technology, and in particular relates to a DBD glue removal process optimization method and system based on characteristic frequency regulation. Background Technology

[0002] In ceramic manufacturing, debinding of the green body is a crucial step, affecting the quality of the final product and production efficiency. Traditional debinding methods are often time-consuming and inefficient. Dielectric barrier discharge (DBD) technology offers advantages such as shorter processing time and higher efficiency. In practical applications, increasing the number of discharge channels leads to a decrease in the total circuit impedance and voltage, reducing debinding efficiency. Simultaneously, frequency also affects debinding efficiency by influencing the polarization loss of the green body. Characteristic frequencies typically refer to important frequency points in the dielectric response characteristics of a material. These frequencies reflect changes in the material's electrical properties and are instructive for optimizing the DBD debinding process. The peak frequency of the dielectric loss tangent (tanδ) is an important reference value because it represents the frequency of maximum dielectric loss and correspondingly highest energy conversion efficiency. In addition, the frequency of changes in dielectric constant and dielectric strength can also serve as references for characteristic frequencies. The number of discharge channels can be quantified through various electrical parameters, with the effective value of the current being one direct quantification method. An increase in the peak or effective value of the current during discharge usually indicates an increase in the number of discharge channels. Furthermore, discharge energy, discharge frequency, and discharge sound can indirectly reflect the number and activity of discharge channels. As organic matter and moisture change during the debinding process, the dielectric response of the material also changes rapidly. This necessitates real-time or near-real-time monitoring during DBD debinding to adjust processing parameters. Furthermore, using high-frequency electromagnetic waves (such as microwaves or radio frequency) to penetrate the sample and monitoring changes in reflection and transmission signals can also help monitor changes in dielectric properties. Therefore, there is an urgent need to propose a DBD debinding process optimization method based on characteristic frequency modulation to improve debinding efficiency and quality. Summary of the Invention

[0003] This invention provides a DBD glue removal process optimization method and system based on characteristic frequency regulation, which is used to solve the technical problems of low glue removal efficiency and poor quality in existing DBD glue removal processes.

[0004] This invention provides a DBD debinding process optimization method based on characteristic frequency modulation, comprising:

[0005] The dielectric loss characteristic frequency of ceramic green bodies under different conditions was determined by using spectrum analysis technology, and the range of dielectric loss characteristic frequencies of ceramic green bodies was obtained.

[0006] The discharge parameters of the DBD process are adjusted according to the dielectric loss characteristic frequency range. The discharge parameters include the applied power supply frequency, voltage, and air gap width. The adjustment of the discharge parameters of the DBD process includes: adjusting the applied voltage to a predetermined value for the air gap field strength and adjusting the applied power supply frequency to the characteristic frequency of the ceramic green body.

[0007] The air gap field strength is measured using a non-invasive method. The applied voltage is adjusted by feedback control to keep the maximum value of the air gap field strength within a preset range. As the temperature increases, the frequency of the applied power supply is reduced while ensuring the discharge intensity.

[0008] Furthermore, the frequency bands in which the dielectric loss characteristic frequencies of ceramic green bodies under different states are determined include low, medium, and high frequency bands and / or microwave frequency bands.

[0009] Furthermore, the method also includes:

[0010] By comparing the green bodies before and after treatment, the glue removal effect and uniformity, as well as the energy consumption during the treatment process, are evaluated to determine the economic benefits of the optimization strategy.

[0011] Furthermore, the evaluation of the debinding effect includes quantitative analysis of the changes in weight, microstructure, and organic content of the green body before and after treatment.

[0012] This invention also provides a DBD glue removal process optimization system based on characteristic frequency modulation, comprising:

[0013] Spectrum analysis equipment is used to determine the dielectric loss characteristic frequency of ceramic green bodies under different conditions using spectrum analysis technology, and to obtain the dielectric loss characteristic frequency range of ceramic green bodies.

[0014] DBD processing device is used to adjust the discharge parameters of DBD processing according to the dielectric loss characteristic frequency range. The discharge parameters include the applied power supply frequency, voltage and air gap width. The adjustment of the discharge parameters of DBD processing includes: adjusting the applied voltage to the air gap field strength to a predetermined value and adjusting the applied power supply frequency to the characteristic frequency of the ceramic green body.

[0015] A real-time monitoring system is used to measure the air gap field strength using a non-invasive method. The system adjusts the applied voltage through feedback control to keep the maximum value of the air gap field strength within a preset range. As the temperature rises, the system reduces the frequency of the applied power supply while ensuring the discharge intensity.

[0016] This application presents a DBD debinding process optimization method and system based on characteristic frequency control. By adjusting the voltage and frequency of the DBD treatment, especially by real-time adjustment based on the dielectric loss characteristic frequency and air gap field strength, it can effectively increase the number of discharge channels and improve the dielectric loss power of the green body, thereby significantly improving debinding efficiency and quality, and increasing production efficiency. Furthermore, through real-time monitoring and feedback adjustment mechanisms, it can ensure that the debinding process is carried out under optimal conditions, further optimizing the production process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A flowchart of a DBD glue removal process optimization method based on characteristic frequency modulation is provided in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of a DBD glue removal process optimization system based on characteristic frequency modulation, which is provided as an embodiment of the present invention. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1 The diagram shows a flowchart of a DBD glue removal process optimization method based on characteristic frequency modulation according to this application.

[0022] like Figure 1 As shown, the DBD glue removal process optimization method based on characteristic frequency modulation specifically includes the following steps:

[0023] Step S101: The dielectric loss characteristic frequency of the ceramic green body under different conditions is determined by using spectrum analysis technology to obtain the dielectric loss characteristic frequency range of the ceramic green body.

[0024] In this step, the frequency bands in which the dielectric loss characteristic frequency of the ceramic green body is determined under different conditions include the low, medium and high frequency bands and / or the microwave frequency band.

[0025] Step S102: Adjust the discharge parameters of the DBD process according to the dielectric loss characteristic frequency range. The discharge parameters include the applied power supply frequency, voltage, and air gap width. Adjusting the discharge parameters of the DBD process includes: adjusting the applied voltage to a predetermined value for the air gap field strength and adjusting the applied power supply frequency to the characteristic frequency of the ceramic green body.

[0026] Step S103: The air gap field strength is measured using a non-invasive method. The applied voltage is adjusted by feedback control so that the maximum value of the air gap field strength varies within a preset range. As the temperature increases, the frequency of the applied power supply is reduced while ensuring the discharge intensity.

[0027] In summary, this embodiment employs spectrum analysis to determine the dielectric loss characteristic frequency of ceramic green bodies under different conditions. This step aims to identify the optimal DBD (Dielectric Discharge Diffusion) treatment frequency range to optimize binder removal. Based on the measured characteristic frequency, the voltage and frequency parameters of the DBD treatment are adjusted. By adjusting the voltage and / or bringing it closer to the characteristic frequency, the number of discharge channels is increased, and binder removal efficiency is improved. High-precision sensors and a data acquisition system are used to monitor key discharge parameters (such as voltage, current, and frequency) and dielectric characteristics in real time, obtaining immediate feedback on the discharge process. During the DBD treatment, changes in the dielectric loss characteristic frequency of the green body are monitored in real time, and discharge parameters are dynamically adjusted based on the feedback results to ensure the treatment process is carried out under optimal conditions.

[0028] By adjusting the voltage and frequency of the DBD process, especially by making real-time adjustments based on the dielectric loss characteristic frequency and air gap field strength, the number of discharge channels can be effectively increased, and the dielectric loss power of the green body can be improved, thereby significantly improving the glue removal efficiency and quality, and increasing production efficiency. Furthermore, a real-time monitoring and feedback adjustment mechanism can ensure that the glue removal process is carried out under optimal conditions, further optimizing the production process.

[0029] In one specific embodiment, the debinding effect and uniformity, as well as the energy consumption during the process, are evaluated by comparing the green bodies before and after treatment to determine the economic benefits of the optimization strategy. The evaluation of the debinding effect includes quantitative analysis of changes in the weight, microstructure, and organic content of the green bodies before and after treatment.

[0030] Specifically, the dielectric response of barium titanate ceramic green bodies was measured at 125℃, 225℃, and 300℃ in the frequency range of 10⁻² to 10⁷ Hz. Figure 1 As can be seen, the characteristic frequency of the green blank decreases from 103 Hz to 102 Hz as the temperature increases.

[0031] A 2mm thick barium titanate ceramic green body was placed in a dielectric barrier discharge reactor with a 1mm air gap, a power supply frequency of 40kHz, and a peak-to-peak voltage of 28kV. The circuit was connected, and the boost converter was adjusted to achieve an applied peak-to-peak voltage of 28kV.

[0032] A non-invasive method was used to measure the air gap field strength. As the reaction proceeded, the air gap field strength decreased. Feedback control was used to adjust the applied voltage to maintain the air gap field strength near its maximum value. An infrared thermal imager was used to monitor the sample temperature. As the temperature increased, the frequency of the applied power supply was slowly reduced to increase the dielectric loss power of the green compact while ensuring the discharge intensity.

[0033] After DBD treatment for 15 minutes, reduce the voltage to 0, cut off the power supply, and complete the glue removal process.

[0034] By adjusting the voltage and frequency of the DBD process, especially by making real-time adjustments based on the dielectric loss characteristic frequency and the air gap field strength, the number of discharge channels can be effectively increased, the dielectric loss power of the green body can be improved, thereby significantly improving the glue removal efficiency and quality, and increasing production efficiency.

[0035] Please see Figure 2 The diagram shows a schematic of the DBD glue removal process optimization system based on characteristic frequency modulation of this application.

[0036] Specifically, the DBD debinding process optimization system based on characteristic frequency regulation includes: a spectrum analysis device for determining the dielectric loss characteristic frequency of ceramic green bodies under different states using spectrum analysis technology, thereby obtaining the dielectric loss characteristic frequency range of the ceramic green bodies; a DBD processing device for adjusting the discharge parameters of the DBD processing according to the dielectric loss characteristic frequency range, wherein the discharge parameters include the applied power supply frequency, voltage, and air gap width, and adjusting the discharge parameters of the DBD processing includes: adjusting the applied voltage to a predetermined value for the air gap field strength and adjusting the applied power supply frequency to the characteristic frequency of the ceramic green bodies; and a real-time monitoring system for measuring the air gap field strength using a non-invasive method, adjusting the applied voltage through feedback control to ensure that the maximum value of the air gap field strength varies within a preset range, and reducing the applied power supply frequency while maintaining the discharge intensity as the temperature increases.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for optimizing DBD glue removal process based on characteristic frequency modulation, characterized in that, include: The dielectric loss characteristic frequency of ceramic green bodies under different conditions was determined by using spectrum analysis technology, and the range of dielectric loss characteristic frequencies of ceramic green bodies was obtained. The discharge parameters of the DBD process are adjusted according to the dielectric loss characteristic frequency range, wherein the discharge parameters include the applied power supply frequency, voltage and air gap width, and the adjustment of the discharge parameters of the DBD process includes: adjusting the applied voltage to the air gap field strength to a predetermined value and adjusting the applied power supply frequency to the characteristic frequency of the ceramic green body. The air gap field strength is measured using a non-invasive method. The applied voltage is adjusted by feedback control to keep the maximum value of the air gap field strength within a preset range. As the temperature increases, the frequency of the applied power supply is reduced while ensuring the discharge intensity.

2. The DBD glue removal process optimization method based on characteristic frequency modulation according to claim 1, characterized in that, The frequency bands in which the dielectric loss characteristic frequencies of ceramic green bodies under different conditions are measured include low, medium, and high frequency bands and / or microwave bands.

3. The DBD glue removal process optimization method based on characteristic frequency modulation according to claim 1, characterized in that, The method further includes: By comparing the green bodies before and after treatment, the glue removal effect and uniformity, as well as the energy consumption during the treatment process, are evaluated to determine the economic benefits of the optimization strategy.

4. The DBD glue removal process optimization method based on characteristic frequency modulation according to claim 3, characterized in that, The evaluation of the debinding effect includes quantitative analysis of the changes in weight, microstructure, and organic content of the green body before and after treatment.

5. A DBD glue removal process optimization system based on characteristic frequency modulation, characterized in that, include: Spectrum analysis equipment is used to determine the dielectric loss characteristic frequency of ceramic green bodies under different conditions using spectrum analysis technology, and to obtain the dielectric loss characteristic frequency range of ceramic green bodies. DBD processing device is used to adjust the discharge parameters of DBD processing according to the dielectric loss characteristic frequency range, wherein the discharge parameters include the applied power supply frequency, voltage and air gap width, and the adjustment of the discharge parameters of DBD processing includes: adjusting the applied voltage to the air gap field strength to a predetermined value and adjusting the applied power supply frequency to the characteristic frequency of ceramic green body. A real-time monitoring system is used to measure the air gap field strength using a non-invasive method. The system adjusts the applied voltage through feedback control to keep the maximum value of the air gap field strength within a preset range. As the temperature rises, the system reduces the frequency of the applied power supply while ensuring the discharge intensity.

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