Fusion magnet recovery cable surface continuous chromium removal system and method

Abstract

The invention discloses a fusion magnet recovery cable surface continuous chromium removal system and method, and relates to the technical field of superconducting material surface treatment.The fusion magnet recovery cable surface continuous chromium removal system comprises a polishing module which comprises a rough polishing brush and a fine polishing brush; the positioning tool module is used for overturning and lifting the superconducting cable base body; the intelligent control unit is used for parameter setting and process control; the ultrasonic cleaning device is used for removing residual abrasive dust and surface pollutants after polishing; a nitrogen protection system; provided is a thickness gauge. Efficient chromium removal is achieved through the double-stage polishing process, the chromium removal rate is increased, the plied yarn scratch depth is reduced, meanwhile, mechanical chromium removal is adopted to replace a chemical method, environment friendliness is achieved, no toxic waste liquid is discharged, meanwhile, an intelligent control unit is integrated, accurate control over process parameters and automatic abrasion compensation are achieved, and the method is suitable for various superconducting cable types and has wide application prospects. The system is particularly suitable for preparing a superconducting cable connector terminal of a nuclear fusion device, and is convenient to maintain and remarkable in economic benefit due to modular design of equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of superconducting material surface treatment, in particular to a fusion magnet recycled cable surface continuous chromium removal system and method. BACKGROUND

[0002] In the manufacturing process of superconducting cables, a chromium protective layer is usually formed on the surface of the conductor by electroplating process to prevent oxidation and corrosion of the conductor during storage and transportation. However, when making joint terminals, the chromium plating layer in the lap joint area must be completely removed to ensure the reliability of electrical connection and low contact resistance.

[0003] In terms of traditional processing technology, although the chemical chromium removal method can effectively remove the chromium layer, there are the following outstanding problems: the use of dangerous chemicals such as strong acid and strong oxidizing agent, there is a serious problem of environmental pollution emission; the treatment cost of chemical waste liquid is high, and there is a risk of occupational health and safety; the corrosion damage to the superconducting cable substrate material may be caused, and the process parameter control precision is limited; a large amount of chromium-containing wastewater is generated in the processing process, and the subsequent treatment is complex and expensive. However, the existing mechanical chromium removal process avoids the problem of chemical pollution, but still has many technical bottlenecks in actual application: low chromium removal efficiency, which cannot meet the batch production demand; difficulty in controlling surface damage, which easily causes superconducting cable wire drawing scratch exceeding the standard; imperfect brush wear compensation mechanism, resulting in poor process stability; lack of intelligent quality monitoring system, making it difficult to realize real-time quality control; high operation complexity, strict skill requirements for operators. At present, there are still ways to improve the chromium removal effect by improving the polishing brush material and optimizing the process parameters, but there are still the following problems: the quantitative relationship between the polishing brush wear rate and the compensation amount has not been established; the optimal process parameters of superconducting cables under different field strengths lack systematic research; the precision control of multi-degree-of-freedom positioning technology still needs to be optimized; the integration of intelligent control system is insufficient, and the coordination between modules needs to be improved.

[0004] In summary, the existing chromium removal technology generally has low efficiency, insufficient precision, high environmental pollution risk, poor economy, and especially cannot meet the complex demands of high precision and high efficiency of fusion reactors. Therefore, a fusion magnet recycled cable surface continuous chromium removal system and method are proposed. SUMMARY

[0005] The purpose of the present application is to provide a fusion magnet recycled cable surface continuous chromium removal system and method to solve the problems raised in the background art.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a fusion magnet recycling cable surface continuous chromium removal system, comprising a polishing module, including a coarse polishing brush and a fine polishing brush; a positioning tool module for overturning and lifting a superconducting cable base; an intelligent control unit for parameter setting and process control; an ultrasonic cleaning device for removing residual polishing debris and surface contaminants; a nitrogen protection system for providing inert gas protection during polishing to prevent oxidation of the superconducting cable base; and a thickness gauge for real-time monitoring of the chromium layer thickness during polishing to provide process conversion signals and quality feedback.

[0007] Preferably, the wire diameter of the coarse polishing brush is 0.8 mm, and the wire diameter of the fine polishing brush is 0.3 mm, and the coarse polishing brush and the fine polishing brush are both replaceable structures.

[0008] Preferably, the intelligent control unit has an automatic wear compensation function, and automatically increases the down pressure by 0.2 mm after 4 hours of system operation.

[0009] Preferably, the nitrogen protection system provides nitrogen with a purity of 99.999%, and the flow of the protective gas is adjustable.

[0010] Preferably, the positioning tool module includes a overturning mechanism and a lifting platform, the overturning mechanism can adjust the overturning angle by a maximum of plus or minus ninety degrees, and the lifting platform can be precisely adjusted in six degrees of freedom in space in cooperation with the overturning mechanism.

[0011] Preferably, the intelligent control unit uses an industrial-grade touch screen and has parameter setting, operation monitoring, and count zeroing functions.

[0012] Preferably, it further comprises a back gas protection tool base connected to the nitrogen protection system for providing a local nitrogen protection environment during polishing.

[0013] A fusion magnet recycling cable surface continuous chromium removal method, comprising the following steps: Step one: coarse polishing stage, using a 0.8 mm wire diameter polishing brush, down pressure width 9.0 mm, narrow side 5.5 mm, reciprocating 300 times; Step two: fine polishing stage, using a 0.3 mm wire diameter polishing brush, reciprocating 500 times; Step three: polishing, cleaning, drying and packaging.

[0014] Preferably, the polishing brush rotating speed in the coarse polishing stage and the fine polishing stage is 1000 rpm, and the moving speed is 50 mm / s.

[0015] Preferably, a thickness detection step is provided between the coarse polishing stage and the fine polishing stage, a thickness gauge is used to detect the chromium layer thickness after coarse polishing, and fine polishing is performed after the thickness meets the standard.

[0016] Compared with the prior art, the present application has the following advantages: 1、Through the setting and cooperation of the polishing module, positioning tooling module and thickness gauge, efficient chromium removal is achieved through a two-stage polishing process, the chromium removal rate is improved, and the strand scratch depth is reduced. At the same time, mechanical chromium removal is used instead of chemical methods, which is environmentally friendly and does not discharge toxic waste liquid. At the same time, an intelligent control unit is integrated to realize accurate control of process parameters and automatic compensation for wear, which is suitable for various superconducting cable types, especially for the preparation of superconducting cable joint terminals for nuclear fusion devices. The system equipment is modularly designed, easy to maintain, and has significant economic benefits.

[0017] 2、Through this method, not only can the chromium layer on the surface of the superconducting cable be effectively removed, but also the integrity and performance of the cable material are not affected. This method accurately controls the polishing parameters and process flow to avoid over-processing or under-processing, thereby improving production efficiency and product quality. In addition, the intelligent control unit in the system can monitor and adjust key parameters in the polishing process in real time, further optimizing the chromium removal effect. This method is not only suitable for standard specifications of superconducting cables, but also can be flexibly adjusted according to actual needs to adapt to cables of different sizes and shapes, showing strong versatility and scalability. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, considering in connection with the accompanying drawings, in which: Figure 1 is a structural schematic diagram of a continuous chromium removal system for the surface of a fusion magnet recovery cable in the present application; Figure 2 is a flowchart of a continuous chromium removal method for the surface of a fusion magnet recovery cable in the present application. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be described below in connection with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0020] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by the upper, lower, front, rear, left, right and the like, is based on the orientation or position relationship shown in the drawings, only for the purpose of facilitating the description of the present application and simplifying the description, and cannot be understood as limiting the present application.

[0021] In the description of the present application, the meaning of one or more is one or more, the meaning of multiple is more than two, greater than, less than, more than and the like are not included in the number, above, below, within and the like are included in the number. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0022] Referring to Figure 1 and Figure 2 The present application provides a kind of fusion magnet recycling cable surface continuous chromium removal system and method technical scheme: A kind of fusion magnet recycling cable surface continuous chromium removal system, polishing module, including rough polishing brush and fine polishing brush;Positioning tool module is used to overturn and lift superconducting cable matrix;Intelligent control unit is used for parameter setting and process control;Ultrasonic cleaning device is used to remove the abrasive and surface pollutants remaining after polishing;Nitrogen protection system is used to provide inert gas protection during polishing, to prevent superconducting cable matrix oxidation;Thickness gauge is used to monitor the chromium layer thickness in real time during polishing, to provide process conversion signal and quality feedback.

[0023] The system is working, first check system status, adjust positioning tool module, realize the six degrees of freedom accurate positioning of cable through electric drive system, then pass into high-purity nitrogen to form protective atmosphere;During rough polishing stage, reciprocating polishing is carried out by rough polishing brush;The thickness of chromium layer is detected by thickness gauge, and after passing, fine polishing stage is entered;Replace fine polishing brush and carry out reciprocating polishing;Thickness is detected again to ensure chromium removal effect;Finally, the surface of cable is cleaned by ultrasonic cleaning device using acetone and ultrasonic wave, and is packaged in nitrogen.

[0024] Through the setting and cooperation of polishing module, positioning tool module and thickness gauge, efficient chromium removal is realized through two-stage polishing process, the chromium removal rate is improved, and the strand line scratch depth is reduced. At the same time, mechanical chromium removal is used instead of chemical method, which is environmentally friendly and has no toxic waste liquid discharge. At the same time, intelligent control unit is integrated to realize accurate control of process parameters and automatic compensation of wear, which is suitable for various superconducting cable types, especially suitable for the preparation of superconducting cable joint terminal of nuclear fusion device. The system has modular design of equipment, convenient maintenance and significant economic benefits.

[0025] Referring to Figure 1 and Figure 2 , in an optional embodiment, the wire diameter of the rough polishing brush is 0.8mm, and the wire diameter of the fine polishing brush is 0.3mm. Both the rough polishing brush and the fine polishing brush are replaceable. Through such a setting, the rough polishing brush and the fine polishing brush are convenient to disassemble and replace, and the user is convenient to operate.

[0026] Referring to Figure 1 and Figure 2 , in an optional embodiment, the intelligent control unit has an automatic wear compensation function. After the system runs for 4 hours, the down pressure is automatically increased by 0.2mm. Through such a setting, since the need for manual intervention is reduced, the operation of the system is more smooth and automatic.

[0027] Referring to Figure 1 and Figure 2 , in an optional embodiment, the nitrogen protection system provides nitrogen with a purity of 99.999%, and the flow of the protective gas is adjustable. Through such a setting, the nitrogen protection system can effectively prevent the occurrence of oxidation reaction, and ensure the stability and quality of the de-chroming process. At the same time, the adjustable gas flow design makes the system can be flexibly adjusted according to the needs of different cable types, further improving the adaptability of the equipment. In addition, the application of high-purity nitrogen not only improves the safety of the process, but also significantly reduces the influence of impurities on the surface performance of the superconducting cable, providing reliable protection for subsequent processing.

[0028] Referring to Figure 1 and Figure 2 , in an optional embodiment, the positioning tool module includes a turnover mechanism and a lifting platform. The turnover mechanism can be adjusted to a maximum turning angle of plus or minus ninety degrees, and the lifting platform can be precisely adjusted in six degrees of freedom in space in cooperation with the turnover mechanism. Through such a setting, due to the flexibility and accuracy of the positioning tool module, the position control of the cable during the de-chroming process is more accurate. The coordinated work of the turnover mechanism and the lifting platform can ensure the stable operation of the cable at different angles and heights, thereby effectively avoiding the problem of uneven processing caused by position deviation. This design not only improves the overall efficiency of the system, but also significantly improves the consistency and reliability of the de-chroming process.

[0029] Referring to Figure 1 and Figure 2As shown, in an optional embodiment, the intelligent control unit adopts an industrial-grade touch screen, with parameter setting, operation monitoring, and count zeroing functions. Through such a setting, the intelligent control unit can adjust various parameters in real time, ensuring the accuracy and stability of the chrome removal process. The operation interface of the industrial-grade touch screen is intuitive and easy to use, and the staff can quickly complete parameter setting and operation monitoring, greatly improving the operation efficiency. At the same time, the count zeroing function provides convenience for the management and data recording of the process flow, further enhancing the intelligent level of the system.

[0030] Referring to Figure 1 and Figure 2 As shown, in an optional embodiment, the system also includes a back gas protection tool assembly platform connected with the nitrogen protection system, used to provide a local nitrogen protection environment during the polishing process. Through such a setting, the back gas protection tool assembly platform can effectively prevent the oxidation phenomenon that may occur during the polishing process, ensuring that the cable surface always maintains a high-quality state during the processing process. The introduction of the local nitrogen protection environment not only improves the fineness of the process, but also significantly reduces material loss and defective rate.

[0031] The working principle of the system: when the system is working, first check the system state, adjust the positioning tool module, and realize the six-degree-of-freedom precise positioning of the cable through the electric drive system; then introduce high-purity nitrogen to form a protective atmosphere; carry out the rough polishing stage, use a 0.8mm wire diameter polishing brush, set the down pressure to 9.0mm and 5.5mm respectively according to the wide and narrow surfaces of the cable, and carry out 300 times of reciprocating polishing; use a thickness gauge to detect the thickness of the chromium layer, and after passing, enter the fine polishing stage; replace the 0.3mm wire diameter polishing brush, and carry out 500 times of reciprocating polishing; detect the thickness again to ensure the chrome removal effect; finally, use acetone and ultrasonic wave to clean the cable surface, dehydrate and dry, and package in nitrogen. The system automatically increases the down pressure by 0.2mm every 4 hours of operation to compensate for the wear of the brush, ensuring the consistency of the process.

[0032] A fusion magnet recovery cable surface continuous chrome removal method, comprising the following steps: Step one: rough polishing stage, using a 0.8mm wire diameter polishing brush, down pressure 9.0mm for wide surface and 5.5mm for narrow surface, reciprocating 300 times; Step two: fine polishing stage, using a 0.3mm wire diameter polishing brush, reciprocating 500 times; Step three: cleaning, drying and packaging after polishing.

[0033] It should be noted that the polishing brush rotation speed of the rough polishing stage and the fine polishing stage is 1000 rpm, and the moving speed is 50 mm / s. The above method further comprises a thickness detection step between the rough polishing stage and the fine polishing stage, and a thickness gauge is used to detect the thickness of the chromium layer after rough polishing. After meeting the standard, fine polishing is carried out. The setting of the thickness detection step can accurately control the transition between rough polishing and fine polishing, avoid the problems of excessive polishing or insufficient polishing, thereby prolonging the service life of the cable and improving the surface quality of the cable.

[0034] The method exhibits high flexibility in practical application and can be quickly adjusted according to superconducting cables of different specifications and shapes. For example, when processing cables with large differences in wide and narrow dimensions, the adjustment of the pressing amount and the polishing times can effectively avoid surface damage caused by uneven stress. At the same time, the combination of acetone cleaning and ultrasonic technology not only completely removes residual grinding dust, but also ensures the cleanliness and integrity of the cable surface.

[0035] Overall, the present application successfully solves many problems existing in traditional chromium removal processes through innovative design and technical integration, providing a new direction and reference for the technical development of related fields.

[0036] Through the method, the chromium layer on the surface of the superconducting cable can be effectively removed while ensuring the integrity and performance of the cable material. The method precisely controls the polishing parameters and process flow to avoid over-processing or under-processing, thereby improving production efficiency and product quality. In addition, the intelligent control unit in the system can monitor and adjust key parameters in the polishing process in real time, further optimizing the chromium removal effect. This method is not only suitable for standard specifications of superconducting cables, but also can be flexibly adjusted according to actual needs to adapt to cables of different sizes and shapes, showing strong versatility and scalability.

[0037] Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A continuous chromium removal system for the surface of a fusion magnet recycling cable, characterized in that, include: The polishing module includes coarse polishing brushes and fine polishing brushes; Positioning fixture module for flipping and lifting the superconducting cable substrate; Intelligent control unit, used for parameter setting and process control; Ultrasonic cleaning equipment is used to remove residual abrasive debris and surface contaminants after polishing; A nitrogen protection system is used to provide inert gas protection during the polishing process to prevent oxidation of the superconducting cable substrate; A thickness gauge is used to monitor the chromium layer thickness in real time during the polishing process, providing process conversion signals and quality feedback.

2. The continuous chromium removal system for the surface of a fusion magnet recycling cable according to claim 1, characterized in that: The coarse polishing brush has a wire diameter of 0.8 mm, and the fine polishing brush has a wire diameter of 0.3 mm. Both the coarse and fine polishing brushes are replaceable.

3. The continuous chromium removal system for the surface of a fusion magnet recycling cable according to claim 1, characterized in that: The intelligent control unit has an automatic wear compensation function, and automatically increases the pressure by 0.2mm after the system has been running for 4 hours.

4. The continuous chromium removal system for the surface of a fusion magnet recycling cable according to claim 1, characterized in that: The nitrogen protection system provides nitrogen with a purity of 99.999%, and the protective gas flow rate is adjustable.

5. A continuous chromium removal system for the surface of a fusion magnet recycling cable according to claim 1, characterized in that: The positioning fixture module includes a flipping mechanism and a lifting platform. The flipping mechanism can be adjusted to a maximum flipping angle of ±90 degrees, and the lifting platform, in conjunction with the flipping mechanism, can be precisely adjusted in six degrees of freedom in space.

6. The continuous chromium removal system for the surface of a fusion magnet recycling cable according to claim 1, characterized in that: The intelligent control unit uses an industrial-grade touch screen and has functions for parameter setting, operation monitoring, and count reset.

7. A continuous chromium removal system for the surface of a fusion magnet recycling cable according to claim 1, characterized in that: It also includes a back gas protection tooling table, which is connected to the nitrogen protection system to provide a local nitrogen protection environment during the polishing process.

8. A method for continuous chromium removal from the surface of a fusion magnet recycling cable, applied to the system described in any one of claims 1-7, characterized in that, Includes the following steps: S1: Coarse polishing stage, using a 0.8mm wire diameter polishing brush, with a pressure of 9.0mm on the wide side and 5.5mm on the narrow side, for 300 reciprocations; S2: Fine polishing stage, using a 0.3mm wire diameter polishing brush, 500 times in total; S3: Cleaning, drying and encapsulation after polishing.

9. A method for continuous chromium removal from the surface of a fusion magnet recycling cable according to claim 8, characterized in that: The polishing brushes in both the coarse and fine polishing stages rotate at 1000 rpm and move at 50 mm / s.

10. A method for continuous chromium removal from the surface of a fusion magnet recycling cable according to claim 9, characterized in that: It also includes setting a thickness detection step between the coarse polishing stage and the fine polishing stage, using a thickness gauge to detect the thickness of the chromium layer after coarse polishing, and then proceeding with fine polishing after the thickness meets the standard.

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