阅读说明：本技术 一种用于无线充电的纳米晶材料的热处理方法及装置 (Heat treatment method and device for nanocrystalline material for wireless charging ) 是由 孙保安 金颖 黄潇 任亚男 刘广辉 柯海波 于 2021-07-08 设计创作，主要内容包括：本发明公开了一种用于无线充电的纳米晶材料的热处理方法及装置,热处理方法包括S1.放料及位置调整；S2.张力、炉温等参数设置；S3.对带材施加张力并进行连续退火；S4.带材冷却收卷。本发明提供的设备包括放料装置、热处理装置及冷却收料装置。放料装置能够对非晶合金带材施加张力并调整张力,热处理装置能够对非晶合金带材在施加应力的同时进行退火处理；冷却装置能够使退火后的带材在保护气体氛围中进行冷却,起到防止其氧化的作用。本发明所提供的用于无线充电的纳米晶材料的热处理方法及设备,通过优化热处理工艺改善了产品的综合软磁性能,制备工艺简单,自动化程度高。(The invention discloses a heat treatment method and a heat treatment device for a wireless charging nanocrystalline material, wherein the heat treatment method comprises the steps of S1, discharging and position adjustment; s2, setting parameters such as tension, furnace temperature and the like; s3, applying tension to the strip and carrying out continuous annealing; and S4, cooling and winding the strip. The equipment provided by the invention comprises a discharging device, a heat treatment device and a cooling and receiving device. The discharging device can apply tension to the amorphous alloy strip and adjust the tension, and the heat treatment device can apply stress to the amorphous alloy strip and simultaneously carry out annealing treatment; the cooling device can cool the annealed strip in a protective gas atmosphere, and plays a role in preventing the strip from being oxidized. The heat treatment method and the heat treatment equipment for the nanocrystalline material for wireless charging provided by the invention improve the comprehensive soft magnetic performance of the product by optimizing the heat treatment process, and have the advantages of simple preparation process and high automation degree.)

1. A heat treatment method and a device for a wireless charging nanocrystalline material are characterized by comprising the following steps:

s1, discharging and position adjusting:

placing an original strip on a releasing disc, winding the strip on a tension wheel set through a leading disc, fixing the original strip on a leading steel bar, opening a cover plate of the annealing furnace, penetrating the leading steel bar from a strip inlet, penetrating the leading steel bar from a strip outlet, simultaneously leading out the strip and winding the strip on the tension wheel set in a cooling furnace, and finally fixing the strip on a material collecting shaft;

s2, setting parameters such as tension, furnace temperature and the like:

the tension annealing parameter setting mainly comprises the following steps: tension value, annealing temperature, cooling water temperature, continuous annealing tape transport speed and type parameters of protective gas introduced into the furnace;

s3, applying tension to the strip and carrying out continuous annealing:

opening an air supply device to input protective gas into an annealing furnace, after the annealing furnace is filled with the protective gas, opening a temperature controller and setting annealing temperature, after the furnace temperature is stable, starting a belt pulley, realizing small-tension belt unwinding through a belt unwinding disc, a belt guiding disc and a tension wheel set, finely adjusting tension through a mechanical mode, adjusting the tension wheel set through a tension control panel, forming a fixed wrap angle through a three-wheel structure of the tension wheel set to adjust the tension of an amorphous strip, accurately controlling the tension applied to the soft magnetic alloy strip, and operating the belt pulley to enable the strip to continuously and slowly pass through the annealing furnace to enter a cooling furnace;

s4, cooling and rolling the strip:

and observing the strip in the furnace through a window of the cooling furnace, properly adjusting the tension wheel set to prevent the strip from being broken and deviated, observing the temperature of the cooling furnace, and ensuring that the annealed strip is sufficiently cooled and wound.

2. The method and apparatus for thermal treatment of wirelessly charged nano-crystalline material as claimed in claim 1, wherein in step S2, the annealing furnace has a heating element and a thermal insulation layer, and the adjustable temperature range is: room temperature to 700 ℃.

3. The method and apparatus for thermal processing of wirelessly charged nano-crystalline material as claimed in claim 1, wherein in step S2, the tension adjusting range is 0-100 MPa, and the tension control system can adjust the applied tension value in real time to make the tension fluctuation value less than 5%.

4. The method and apparatus for thermal processing of wirelessly charged nano-crystalline material as claimed in claim 1, wherein in step S2, the inert shielding gas introduced into the annealing furnace and the cooling furnace is selected from nitrogen, helium or argon, and the gas flow rate is 5-20 ml/S.

5. The method and apparatus for thermal treatment of wirelessly charged nano-crystalline material as claimed in claim 1, wherein the temperature in the cooling furnace is not higher than 200 ℃.

6. A heat treatment method and a device for a wireless charging nanocrystalline material are characterized by comprising the following steps: the material discharging system (100), the tension annealing system (200) and the cooling material receiving system (300);

the emptying system (100) comprises: the system overload or no-load alarm device (101), a control panel (102) for adjusting the stress of the strip, setting the initial parameters of the strip and the running parameters of the equipment, a tension wheel set (103) for detecting the tension of the strip, a material placing disc (104) and a tape leading disc (105);

the tension annealing system (200) includes: a translation device (201) for adjusting the front and rear positions of the annealing furnace, an air supply device (202) for inputting protective gas into the annealing furnace, a temperature controller (203) for controlling and adjusting the annealing temperature, and an annealing furnace body (204);

the cooling and receiving system (300) comprises: the device comprises a temperature control panel (301) for regulating and controlling the temperature in the cooling furnace, a strip outlet (302) for annealed nanocrystalline strips, a gas supply interface (303) for supplying inert gas into the cooling furnace, a cooling furnace cavity (304), a leading-out reel (305) for supplying the strips, a tension wheel set (306) for testing the stress of the strips, a take-up reel (307) for taking up the strips and a cooling water tank body (308);

the tension wheel set (103) of the emptying system (100) and the tension wheel set (306) of the cooling receiving system (300) form a stress closed-loop control system of the first two parts, and the running speed of the belt travelling disc (105) of the emptying system (100) and the running speed of the belt travelling disc (305) of the cooling receiving system (300) are coordinated.

Technical Field

The invention relates to the technical field of soft magnetic material production, in particular to a heat treatment method and a heat treatment device for a wireless charging nanocrystalline material. The invention provides a heat treatment method and a heat treatment device for a wireless charging nanocrystalline material.

Background

With the development of science and technology and the continuous progress of new material preparation methods, intelligent electronic products are rapidly developed, and the changes put higher demands on the charging technology of the products, and the corresponding wireless charging technology is not developed. At present, the wireless charging technology mainly includes three types: the electromagnetic induction mode, the radio wave mode, and the electromagnetic resonance mode, wherein the wireless charging technology field of electromagnetic induction formula is higher to separating magnetic sheet or magnetic conduction piece's comprehensive magnetic performance requirement, along with the research and development of the novel material of modern amorphous alloy and the continuous perfect of preparation technique, amorphous alloy soft magnetic material is at the brand-open head angle of research and development and application field of soft magnetic material, this type of material not only has high saturation magnetic induction intensity, low-loss characteristic, and can improve the work efficiency of product, reduce the volume, thereby reach the purpose of practicing thrift the environmental protection.

In order to further improve the magnetic performance of the amorphous alloy soft magnetic material, researchers try to obtain the nanocrystalline soft magnetic material through component design, annealing and the like, the comprehensive soft magnetic performance of the nanocrystalline soft magnetic material is particularly outstanding, the nanocrystalline soft magnetic material has great application value in both high-frequency and low-frequency fields, the nanocrystalline soft magnetic material is greatly superior to the traditional soft magnetic material in performance as a novel soft magnetic material, and the nanocrystalline soft magnetic material is very suitable for being used as a magnetism isolating sheet or a magnetism conducting sheet raw material for wireless charging.

The traditional heat treatment mode for preparing the soft magnetic material is single isothermal annealing, the method comprises the steps of firstly winding an amorphous alloy strip into a magnetic core, then carrying out isothermal annealing for a certain time, and then carrying out air cooling or furnace cooling, but the method has certain defects, firstly, the heating speed and the stress of the outside and the inside of the strip wound into a coil are different, and the prepared nanocrystalline material has poor consistency; secondly, the amorphous crystallization is accompanied by about 1% of volume densification, so that the amorphous alloy is contracted due to the crystallization volume, and the magnetic core is tightly hooped on the circular ring under the longitudinal stress along the circumference, so that the internal fracture is easy to generate and the magnetic core is difficult to be found; in addition, because the electromagnetic induction type wireless charging technical field has higher requirements on the comprehensive magnetic performance of the magnetism isolating sheet or the magnetism conducting sheet, if the nanocrystalline material is to be widely applied to wireless charging materials such as new energy automobiles, mobile phones and the like, the traditional isothermal annealing mode needs to be improved, and the comprehensive soft magnetic performance of the nanocrystalline material is improved by optimizing the process.

In order to further improve the comprehensive soft magnetic performance of nanocrystalline materials, people have conducted a great deal of research on the materials by means of adjusting the process, controlling the size of nanocrystalline grains, magnetic field annealing and the like, but all have certain limitations. According to the traditional theory, the soft magnetic material needs to obtain excellent soft magnetic performance, and mainly satisfies the condition that the magnetic anisotropy constant of the soft magnetic material is close to zero.

Two tension annealing modes are provided, wherein one mode is heating and cooling along with a furnace after tension is applied to the amorphous nanocrystalline strip; the other is to perform continuous tension treatment on the amorphous nanocrystalline strip. However, the development of the tension annealing device is still in an early stage, and the automation capability is lacked, so that the tension annealing device is not applied to the field of preparing wireless charging nanocrystalline materials. Therefore, from the perspective of improving the comprehensive performance of the soft magnetic material, or from the perspective of expanding the market share of the nanocrystalline soft magnetic material in the wireless charging field, research and development of a corresponding preparation process and a corresponding production device are considered to meet the market demand.

Disclosure of Invention

In view of the deficiencies of the prior art, the present invention provides a method and an apparatus for heat treatment of a wirelessly charged nanocrystal material, which are used for preparing a nanocrystal material for wireless charging. The heat treatment method and the heat treatment device for the nanocrystalline material for wireless charging improve the comprehensive soft magnetic performance of the product by optimizing the heat treatment process, improve the quality of the finished product, and have the advantages of simple preparation process and high automation degree.

The invention discloses a heat treatment method and a heat treatment device for a wireless charging nanocrystalline material.

A method for heat treatment of a nanocrystalline material for wireless charging, comprising the steps of:

s1, discharging and position adjusting:

placing an original strip on a releasing disc, winding the strip on a tension wheel set through a leading disc, fixing the original strip on a leading steel bar, opening a cover plate of the annealing furnace, penetrating the leading steel bar from a strip inlet, penetrating the leading steel bar from a strip outlet, simultaneously leading out the strip and winding the strip on the tension wheel set in a cooling furnace, and finally fixing the strip on a material collecting shaft;

s2, setting parameters such as tension, furnace temperature and the like:

the tension annealing parameter setting mainly comprises the following steps: tension value, annealing temperature, cooling water temperature, continuous annealing tape transport speed and type parameters of protective gas introduced into the furnace;

s3, applying tension to the strip and carrying out continuous annealing:

opening an air supply device to input protective gas into an annealing furnace, after the annealing furnace is filled with the protective gas, opening a temperature controller and setting annealing temperature, after the furnace temperature is stable, starting a belt pulley, realizing small-tension belt unwinding through a belt unwinding disc, a belt guiding disc and a tension wheel set, finely adjusting tension through a mechanical mode, adjusting the tension wheel set through a tension control panel, forming a fixed wrap angle through a three-wheel structure of the tension wheel set to adjust the tension of an amorphous strip, accurately controlling the tension applied to the soft magnetic alloy strip, and operating the belt pulley to enable the strip to continuously and slowly pass through the annealing furnace to enter a cooling furnace;

s4, cooling and rolling the strip:

and observing the strip in the furnace through a window of the cooling furnace, properly adjusting the tension wheel set to prevent the strip from being broken and deviated, observing the temperature of the cooling furnace, and ensuring that the annealed strip is sufficiently cooled and wound.

A heat treatment device for a wirelessly charged nanocrystalline material is integrally divided into three parts: the device comprises a discharging system, a tension annealing system and a cooling receiving system;

the feeding system is provided with an overload or no-load alarm device, a control panel for adjusting the stress of the strip, setting parameters such as initial parameters of the strip, the running speed of the equipment and the like, a tension wheel set for detecting the tension applied to the strip, and a feeding disc and a leading disc for placing materials;

the tension annealing system comprises a translation device for adjusting the front and rear positions of the annealing furnace, an air supply device for inputting protective gas into the annealing furnace, a temperature controller for controlling and adjusting the annealing temperature and an annealing furnace body;

the cooling material receiving system comprises a temperature control panel for regulating and controlling the temperature in the cooling furnace, a strip outlet of the annealed nanocrystalline strip, a gas supply interface for conveying inert gas into the cooling furnace, a cooling furnace cavity, a strip conveying disc for conveying the strip, a tension wheel set for testing the stress of the strip, a strip winding disc for winding the strip and a cooling water tank body.

The tension wheel set of the discharging system and the tension wheel set of the cooling receiving system form a stress closed-loop control system of the front two parts, and the belt traveling disc of the discharging system and the belt traveling disc of the cooling receiving system coordinate the running speed, so that the functions of controlling the traveling speed and the tension of the belt materials can be achieved.

The position of the annealing furnace body can be accurately adjusted through the translation device so as to prevent the strip from deviating from the central position of the feeding hole of the annealing furnace.

The heat treatment method and the heat treatment device for the wirelessly charged nanocrystalline material can perform tension annealing treatment on most soft magnetic materials, such as 1K101, 1K107, permalloy and the like.

The invention optimizes the traditional heat treatment mode of the nanocrystalline material from the following aspects.

The tension control device comprises a tension wheel set for detecting stress, a belt moving disc for placing a belt material, and a tension sensor for detecting the tension, wherein the tension control device, the belt releasing disc and the belt winding disc can apply tension to an amorphous belt material in an annealing process by changing the belt moving speed and combining the tension applied to the belt material, and an external force is applied to the belt material while continuous annealing is performed by regulating the tension applied to the belt material so as to induce the uniaxial magnetic anisotropy of the material, so that the comprehensive soft magnetic performance of the nanocrystalline material is improved, the required performance requirements of a wireless charging magnetism isolating sheet or a wireless charging magnetism conducting sheet are met, and in addition, the residual magnetism under stress annealing is obviously lower than that under common annealing.

According to the nanocrystalline material obtained by using the tension continuous annealing mode, because all parts of the material are subjected to uniform tension, the strip material after annealing has good consistency, and the annealing mode is single-piece strip material isothermal annealing, so that the problems of stress or temperature unevenness and the like during winding are avoided, and the strip material can be effectively prevented from being deformed unevenly or broken.

The cooling material receiving system is characterized in that an inspection window is arranged on the outer box body, the transmission live of the inner strip materials can be observed through the inspection window, the outer box panel on the right side of the cooling furnace can be opened, the inner strip materials are broken or curled, the outer box panel on the right side of the cooling furnace can be opened, and the inner strip materials can be adjusted in time.

Compared with the prior art, the invention has the beneficial effects that:

according to the heat treatment method and the heat treatment device for the wireless charging nanocrystalline material, disclosed by the invention, through optimizing a heat treatment process, the defects of poor consistency, product deformation, fracture and the like of a traditional heat treatment mode are avoided, and the comprehensive magnetic performance and the yield of products can be effectively improved. In addition, the invention also provides a wireless charging soft magnetic material heat treatment device with higher automation degree, which can effectively improve the production efficiency and reduce the production cost. The wireless charging nanocrystalline soft magnetic material produced by the device has extremely wide application prospect in the fields of mobile phone communication, new energy automobiles and the like.

Drawings

FIG. 1 is a schematic view of the overall structure of the apparatus of the present invention;

FIG. 2 is a detailed schematic of the apparatus of the present invention;

Detailed Description

The technical solutions of the present invention are further described in detail with reference to the accompanying drawings and specific embodiments, which are only illustrative of the present invention and do not represent and limit the scope of the present invention.

The overall structure of the heat treatment apparatus for wirelessly charged nanocrystalline material according to this embodiment is shown in fig. 1, and the heat treatment apparatus includes a material discharge system 100, a tension annealing system 200, and a cooling material receiving system 300, and the detailed structure is shown in fig. 2.

A heat treatment method and a device for a nanocrystalline material for wireless charging are integrally divided into three parts: an emptying system 100, a tension annealing system 200, and a cooling receiving system 300.

The feeding system 100 is provided with an overload or idle warning device 101, a control panel 102 for adjusting the stress of the strip, setting parameters such as initial parameters of the strip and the running speed of the equipment, a tension wheel set 103 for detecting the tension applied to the strip, a feeding disc 104 for placing materials and a leading disc 105.

The tension annealing system 200 comprises a translation device 201 for adjusting the front and rear positions of the annealing furnace, an air supply device 202 for supplying protective gas into the annealing furnace, a temperature controller 203 for controlling and adjusting the annealing temperature, and an annealing furnace body 204.

The cooling material receiving system 300 comprises a temperature control panel 301 for regulating and controlling the temperature in the cooling furnace, a strip outlet 302 for annealed nanocrystalline strips, a gas supply interface 303 for supplying inert gas into the cooling furnace, a cooling furnace cavity 304, a strip conveying disc 305 for conveying the strips, a tension wheel set 306 for testing the stress of the strips, a strip winding disc 307 for winding the strips, and a cooling water tank 308.

The tension wheel set 103 of the discharging system 100 and the tension wheel set 306 of the cooling receiving system 300 form a stress closed-loop control system of the first two parts, and the belt traveling disc 105 of the discharging system 100 and the belt traveling disc 305 of the cooling receiving system 300 coordinate the running speed to play a role in controlling the traveling speed and the tension of the belt.

The position of the annealing furnace body 204 can be accurately adjusted by the translation device 201 so as to prevent the strip from deviating from the center position of the feeding hole of the annealing furnace.

The invention provides a heat treatment process for continuous tension annealing, which comprises the following specific process flows:

s1, discharging and position adjusting:

placing an original strip on a tape releasing disc, winding the strip on a tension wheel set through a tape guiding disc, opening a cover plate of an annealing furnace, introducing the strip into the annealing furnace from a tape inlet, penetrating out of a tape outlet, introducing the strip into a cooling furnace, winding the strip on the tension wheel set in the cooling furnace, and finally fixing the strip on a material collecting shaft;

s2, setting parameters such as tension, furnace temperature and the like:

the tension annealing parameter setting mainly comprises the following steps: the width of the original strip, the tension value, the annealing temperature, the cooling water temperature, the continuous annealing tape-feeding speed, the type of protective gas introduced into the furnace and other parameters can be set with specific values according to the components and the process requirements of the original strip;

s3, applying tension to the strip and carrying out continuous annealing:

opening an air supply device to input protective gas into an annealing furnace, after the annealing furnace is filled with the protective gas, opening a temperature controller and setting annealing temperature, after the furnace temperature is stable, starting a belt pulley, realizing small-tension belt unwinding through a belt unwinding disc, a belt guiding disc and a tension wheel set, finely adjusting tension through a mechanical mode, adjusting the tension wheel set through a tension control panel, forming a fixed wrap angle through a three-wheel structure of the tension wheel set to adjust the tension of an amorphous strip, accurately controlling the tension applied to the soft magnetic alloy strip, and operating the belt pulley to enable the strip to continuously and slowly pass through the annealing furnace to enter a cooling furnace;

s4, cooling and rolling the strip:

and observing the strip in the furnace through a window of the cooling furnace, properly adjusting the tension wheel set to prevent the strip from being broken and deviated, observing the temperature of the cooling furnace, and ensuring that the annealed strip is sufficiently cooled and wound.

The preparation of the wireless charging nanocrystalline material can be realized by adjusting the process parameters according to the content of the invention, and the performance basically consistent with the embodiment of the invention is shown by tests. The present invention has been described in an illustrative manner, and it should be understood that various changes, additions and substitutions for the described embodiments may be made by those skilled in the art without departing from the spirit of the invention without departing from the structure thereof or exceeding the scope of the invention as defined in the following claims.