Method for induction heating of aerosol-generating substrate by using receptor material

Abstract

The invention relates to a method for induction heating of an aerosol-generating substrate by using a susceptor material, and belongs to the technical field of susceptor materials. The method comprises the following steps: obtaining a susceptor material with a set average particle size; screening out a plurality of susceptor materials with the same average particle size from the susceptor materials with the set average particle size, mixing the screened susceptor materials with an aerosol generating matrix, and controlling the filling coefficient of the mixing, so that the plurality of susceptor materials with the same average particle size perform induction heating on the aerosol generating matrix, the aerosol generating product is obtained. According to the embodiment of the invention, the aerosol generating substrate of each smoke cartridge is in uniform contact with the small receptor material with the same particle size, each small receptor material is used as an electromagnetic induction heating body, the aerosol generating substrates at all positions are uniformly heated at the same time after being electrified, the heating efficiency is higher and more stable, and the heating effect is better. The induction preheating time is greatly shortened, heating is faster and more uniform, and the suction body feeling is better.

Description

Technical Field

[0001] The present application relates to the technical field of susceptor materials, and in particular to a method for using a susceptor material to inductively heat an aerosol-generating substrate. Background Art

[0002] An aerosol generating system for heating an aerosol-forming substrate based on the principle of electromagnetic induction may include a susceptor material component, and the susceptor material component includes an induction source and a susceptor material. The induction source is configured to generate an alternating electromagnetic field, which induces heat in the susceptor material, thereby generating at least one of eddy current loss and hysteresis loss. The aerosol generating substrate may be ordered shredded tobacco, disordered shredded tobacco, or tea leaves, herbal plant particles or powders, all of which are expected to be heated to volatilize an aerosol for inhalation.

[0003] In order to control the temperature of the substrate, a sensor material has been proposed. Currently, there are two main types of sensor materials. The mainstream is a sensor material with two, three or even more layers of a first sensor material and a second sensor material, which has two Curie temperature points; the second is a sensor material of a single material, which has only one Curie temperature point. However, the current sensor materials are used for induction heating of aerosol generating substrates, and there are problems such as the sensor material cannot fully contact with the aerosol generating substrate, the heating efficiency is low, the induction preheating time is long, and the heating uniformity is poor, which affects the puffing experience. Summary of the invention

[0004] The present application provides a method for using a susceptor material for inductively heating an aerosol-generating substrate, in order to solve the following technical problem: how to improve the heating efficiency of the susceptor material for inductively heating an aerosol-generating substrate.

[0005] In a first aspect, an embodiment of the present application provides a method for using a susceptor material to inductively heat an aerosol-generating substrate, the method comprising:

[0006] obtaining a susceptor material having a set average particle size;

[0007] A plurality of the receptor materials with the same average particle size are screened out from the receptor materials with a set average particle size and mixed with an aerosol generating matrix, and the filling coefficient of the mixture is controlled so that the plurality of the receptor materials with the same average particle size can induction heat the aerosol generating matrix to obtain an aerosol generating product.

[0008] Optionally, the set average particle size is 0.1 mm to 3 mm.

[0009] Optionally, the set average particle size is 0.1 mm to 1.5 mm.

[0010] Optionally, the filling factor is ≥80%.

[0011] Optionally, the filling factor is ≥85%.

[0012] Optionally, the shape of the sensor material is a regular shape or an irregular shape.

[0013] Optionally, the regular shape includes at least one of the following: a sphere, a cube, a cuboid, a cylinder, a cylindrical shape, and a sheet.

[0014] Optionally, the susceptor material is a material that is heated using the principle of electromagnetic induction.

[0015] Optionally, the method of obtaining a susceptor material having a set average particle size comprises:

[0016] The raw materials are sequentially smelted and cast to obtain alloy ingots;

[0017] The alloy ingot is crushed to obtain a susceptor material with a set average particle size.

[0018] Optionally, the smelting method is vacuum induction smelting.

[0019] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0020] The sensor material provided in the embodiment of the present application is used for the method of inductively heating an aerosol generating substrate, the method comprising: obtaining a sensor material with a set average particle size; selecting a plurality of the sensor materials with the same average particle size from the sensor material with the set average particle size and mixing them with the aerosol generating substrate, and controlling the filling coefficient of the mixture so that the plurality of the sensor materials with the same average particle size perform inductive heating on the aerosol generating substrate to obtain an aerosol generating product. The sensor material with a set average particle size ensures that the sensor material has a certain uniformity in size, improves the uniformity of subsequent mixing and the stability of the heating effect; selecting a plurality of sensor materials with the same average particle size and mixing them with the aerosol generating substrate: selecting a plurality of sensor materials with the same average particle size can further improve the uniformity of the sensor material, and the uniformly distributed plurality of sensor materials can make the heat transfer more evenly in the aerosol generating substrate during inductive heating; the uniformly distributed and closely contacted plurality of sensor materials perform inductive heating on the aerosol generating substrate, which can achieve a fast, uniform and stable heating effect. This stable heating process enables the aerosol-generating matrix to be converted into an aerosol in the expected manner, ultimately resulting in an aerosol-generating product with stable quality and good puffing taste, meeting user demands for product performance and experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings herein are incorporated into and form a part of this specification, showing embodiments consistent with the present application, and are used in conjunction with the specification to explain the principles of the present application.

[0022] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic flow chart of a method for a receptor material provided by an embodiment of the present application to inductively heat an aerosol - generating substrate;

[0024] Figure 2 It is a comparative physical diagram of a receptor material before and after suction testing provided by Embodiment 1 of the present application;

[0025] Figure 3 It is a comparative physical diagram of a receptor material before and after suction testing provided by Embodiment 2 of the present application;

[0026] Figure 4 It is a comparative physical diagram of a receptor material before and after suction testing provided by Embodiment 3 of the present application. Detailed Embodiments

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0028] The various embodiments of the present application may exist in the form of a range; it should be understood that the description in the form of a range is only for convenience and brevity, and should not be construed as a rigid limitation on the scope of the present application; therefore, it should be considered that the described range description has specifically disclosed all possible sub - ranges and individual values within that range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub - ranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and individual numbers within that range, such as 1, 2, 3, 4, 5, and 6, regardless of the range. Additionally, whenever a numerical range is indicated herein, it means including any cited number (fraction or integer) within the indicated range.

[0029] In this application, unless otherwise stated, the orientation terms such as "upper" and "lower" specifically refer to the drawing direction in the attached drawings. In this text, "and / or" describes the association relationship of associated objects and indicates that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Where A and B can be singular or plural. In this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Additionally, in the description of the specification of this application, the terms "include", "comprise", etc. mean "including but not limited to". In this text, "at least one" means one or more, and "a plurality" means two or more. "At least one kind", "at least one item (piece) below", or similar expressions refer to any combination of these items, including any combination of single item (piece) or plural items (pieces). For example, "at least one item (piece) among a, b, or c", or, "at least one item (piece) among a, b, and c" can both represent: a, b, c, a - b (i.e., a and b), a - c, b - c, or a - b - c, where a, b, and c can be single or multiple respectively.

[0030] Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment, etc. used in this application can be obtained through market purchase or can be prepared by existing methods.

[0031] In a first aspect, an embodiment of this application provides a method for a receptor material to inductively heat an aerosol - generating substrate, Figure 1 is a schematic flow chart of a method for a receptor material to inductively heat an aerosol - generating substrate provided by an embodiment of this application; please refer to Figure 1 , the method includes:

[0032] S1. Obtain a receptor material with a set average particle size;

[0033] The set average particle size can initially standardize the basic characteristics of the receptor material and lay a foundation for subsequent screening of uniform materials. The set average particle size can obtain a receptor material that meets the requirements of this range through specific crushing and screening processes, ensuring a certain degree of uniformity in the size of the material and avoiding unstable subsequent mixing and heating effects due to excessive particle size differences.

[0034] In some embodiments, the obtaining of the receptor material with a set average particle size includes:

[0035] Successively smelt and cast the raw materials to obtain an alloy ingot;

[0036] Crush the alloy ingot to obtain a receptor material with a set average particle size.

[0037] In some embodiments, the smelting method is vacuum induction smelting.

[0038] Smelting and casting: The raw materials are successively subjected to vacuum induction smelting and casting to obtain an alloy ingot. Vacuum induction smelting can effectively isolate air, reduce the mixing of impurities and gases, ensure the purity of the alloy, and improve the performance of the alloy such as electrical conductivity and thermal conductivity. Good electrical conductivity helps the receptor material generate heat quickly when electrified and induced, and high thermal conductivity provides a basis for subsequent heat transfer to the aerosol generation matrix. The casting process forms the alloy into an alloy ingot with a specific shape, facilitating subsequent processing.

[0039] Crushing treatment: Crush the alloy ingot to obtain a receptor material with a set average particle size. The set average particle size can ensure the uniformity of the receptor material in terms of size, which is crucial for the subsequent uniformity of mixing with the aerosol generation matrix. A uniform particle size distribution makes the receptor material more evenly distributed in the matrix, facilitating uniform heat transfer and physical support, etc.

[0040] In some embodiments, the set average particle size is from 0.1 mm to 3 mm.

[0041] In some embodiments, the set average particle size is from 0.1 mm to 1.5 mm.

[0042] Crush the alloy ingot to obtain a receptor material with a set average particle size of from 0.1 mm to 3 mm, which ensures the uniformity of the receptor material in terms of size and is conducive to improving the uniformity of subsequent mixing with the aerosol generation matrix. A uniform particle size distribution makes the receptor material more evenly distributed in the matrix, facilitating uniform heat transfer and physical support, etc. Exemplarily, the set average particle size can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.2 mm, 1.4 mm, 1.5 mm, 1.7 mm, 1.9 mm, 2.1 mm, 2.3 mm, 2.5 mm, 2.7 mm, 2.9 mm, 3 mm, etc.

[0043] S2. Screen out a plurality of the receptor materials with the same average particle size from the receptor materials with the set average particle size and mix them with the aerosol generation matrix, and control the filling coefficient of the mixing so that the plurality of the receptor materials with the same average particle size inductively heat the aerosol generation matrix to obtain an aerosol generation product.

[0044] As a heating element, the receptor material generates heat quickly after being energized. Since it is in full and close contact with the aerosol-generating matrix, the heat can be efficiently and evenly transferred to the matrix. When the receptor material is evenly distributed around the matrix, the dead corners of heat transfer are avoided, ensuring the consistency of heating of the matrix. This efficient heat transfer allows the aerosol-generating matrix to heat up quickly and then quickly convert into aerosol, meeting the user's inhalation needs.

[0045] Screening out multiple receptor materials with the same average particle size and mixing them with the aerosol generating matrix: Screening out receptor materials with the same average particle size can further improve the uniformity of the material. When these receptor materials with consistent particle sizes are mixed with the aerosol generating matrix, it can ensure that the distribution state of each receptor material in the matrix is ​​more uniform. When the uniformly distributed receptor materials are inductively heated, the heat can be transferred more evenly in the aerosol generating matrix, avoiding the problem of local heat concentration or insufficient heat.

[0046] Controlling the filling factor of the mixture: The susceptor material is tightly packed around the aerosol generating matrix, which provides a guarantee for sufficient close contact. Close contact can speed up the transfer of heat from the susceptor material to the aerosol generating matrix and improve the heating efficiency. At the same time, the tight filling structure also helps to maintain the stability of the heating system, so that the heat exchange between the susceptor material and the matrix is ​​continuous and stable during the induction heating process.

[0047] Induction heating of the aerosol-generating matrix to obtain an aerosol-generating product: After the previous steps, multiple receptor materials that are evenly distributed and in close contact are induction heated on the aerosol-generating matrix, which can achieve a fast, uniform and stable heating effect. This stable heating process enables the aerosol-generating matrix to be converted into an aerosol in an expected manner, and finally obtains an aerosol-generating product with stable quality and good puffing taste, meeting the user's requirements for product performance and experience.

[0048] Therefore, the uniform distribution of the receptor material and its close and uniform contact with the aerosol generating matrix together provide a stable and uniform heating effect, so that the aerosol generating matrix is ​​stably converted into aerosol, and the uniform matrix distribution ensures that the receptor material will not have abnormal conditions such as dry burning due to local matrix loss during operation, thereby realizing a stable cycle of heating and aerosol generation, and ultimately improving the overall performance of the product and the user's smoking taste.

[0049] In some embodiments, the fill factor is ≥ 80%.

[0050] In some embodiments, the fill factor is ≥ 85%.

[0051] The filling factor can be ≥80% to ensure that the receptor material is tightly filled around the aerosol generating matrix. From a physical perspective, the receptor material supports and disperses the aerosol generating matrix, preventing the matrix from accumulating or unevenly distributed inside the cartridge. At the same time, this tight filling structure enables the matrix to remain stably in the corresponding position during the transportation and use of the cartridge, and will not easily shift or leak. Exemplarily, the filling factor can be 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, etc.

[0052] In some embodiments, the shape of the susceptor material is a regular shape and / or an irregular shape.

[0053] In some embodiments, the regular shape includes at least one of the following: a sphere, a cube, a cuboid, a cylinder, a cylindrical shape, and a sheet.

[0054] The shape of the sensor material can be designed according to the requirements, and can be a regular shape and / or an irregular shape. The regular shape can be a combination of one or more of a sphere, a cube, a cuboid, a cylinder, a cylindrical shape, and a sheet.

[0055] In some embodiments, the susceptor material is a material that is heated using the principles of electromagnetic induction.

[0056] The sources of the susceptor material are wide, and the susceptor material can be any material that can be heated using the principle of electromagnetic induction.

[0057] The method for using a susceptor material to inductively heat an aerosol-generating substrate provided in the embodiments of the present application has the following advantages:

[0058] (1) The receptor material is a sphere, cube, cuboid, cylinder, cylindrical, sheet or various irregular shapes with an average particle size of 0.1mm to 3mm. Small receptor materials with the same average particle size are screened out and evenly mixed with the aerosol generating matrix, with a filling factor of ≥80%. In this way, the aerosol generating matrix of each cigarette cartridge is evenly contacted with the small receptor material of the same particle size. Each small receptor material acts as an electromagnetic induction heating element. After power is turned on, the aerosol generating matrix at each position is evenly heated at the same time, with higher and more stable heating efficiency, greatly shortening the induction preheating time (≤16 seconds), making the heating faster and more uniform, and providing a better smoking experience.

[0059] The present application will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present application and not to limit the scope of the present application. For the experimental methods without specific conditions indicated in the following embodiments, they are generally determined according to national standards. If there is no corresponding national standard, they are carried out according to general international standards, conventional conditions or the conditions recommended by the manufacturer.

[0060] Example 1

[0061] A method for a sensor material to inductively heat an aerosol-generating substrate, including: taking the 1J79 alloy with a national standard brand as an example, smelting it in a vacuum induction furnace, placing the smelted 1J79 alloy ingot in a crusher for crushing, with an average particle size of 0.3 mm to 0.8 mm; screening out the sensor material with a surface brightness and an average particle size of 0.5 mm. Placing the screened sensor material in the mainstream market-leading cartridge launched by Philip Morris International, the world's largest tobacco company in the United States, so that it is in full and uniform contact with the aerosol-generating substrate, with a filling coefficient of 85%, so that a plurality of the sensor materials with the same average particle size inductively heat the aerosol-generating substrate to obtain an aerosol-generating product.

[0062] In addition, the 1J79 alloy is made into a sensor material with the same size (width: 4 mm, length: 12 mm) as the sensor material in the mainstream market-leading cartridge launched by Philip Morris International, and it is placed in the mainstream market-leading cartridge launched by Philip Morris International, which is used as Comparative Example 1. The sensor material of Example 1 is placed in the mainstream market-leading smoking device and cartridge launched by Philip Morris International, the world's largest tobacco company in the United States, for testing. The use effect of the same model of smoking device and cartridge products of Philip Morris International is used as Comparative Example 2.

[0063] It is found that the sensor material made in Example 1 is stable and rapid in the induction preheating stage, the induction preheating time is significantly shorter than that of Comparative Example 1 and Comparative Example 2, the aerosol generation is uniform and the temperature is appropriate, the number of puffs is between 14 and 15, the puffing taste is better, and the experience is better. The specific results are shown in the puffing data results of the sensor material of Example 1 in Table 1. Figure 2 A comparison physical diagram (left - before, right - after) of the sensor material provided in Example 1 of the present application before and after the puffing test; please refer to Figure 2 , the aerosol-generating substrate is carbonized uniformly and sufficiently.

[0064] Table 1 Puffing data results of the sensor material of Example 1

[0065]

[0066] Example 2

[0067] A method for a receptor material to inductively heat an aerosol - generating substrate, including: taking the 1J85 alloy with the national standard brand as an example, smelting it in a vacuum induction furnace, placing the smelted 1J85 alloy ingot in a crusher to crush it, with an average particle size of 0.7 mm to 1.3 mm; screening out receptor materials with a surface brightness and an average particle size of 1.0 mm. Placing the screened receptor materials in the mainstream market - occupied cartridge launched by Philip Morris International, the largest tobacco company in the world, in the United States, so that they are in full and uniform contact with the aerosol - generating substrate, with a filling coefficient of 80%, so that multiple receptor materials with the same average particle size inductively heat the aerosol - generating substrate to obtain an aerosol - generating product.

[0068] In addition, prepare the 1J85 alloy into receptor materials with the same size (width: 4 mm, length: 12 mm) as the receptor materials in the mainstream market - occupied cartridge launched by Philip Morris International, and place them in the mainstream market - occupied cartridge launched by Philip Morris International as Comparative Example 3. Place the receptor materials of Example 2 in the mainstream market - occupied smoking devices and cartridges launched by Philip Morris International, the largest tobacco company in the world, in the United States, for testing. Take the usage effect of the same - model smoking devices and cartridge products of Philip Morris International as Comparative Example 4.

[0069] It is found that the receptor materials made in Example 2 are stable and rapid in the induction pre - heating stage. The induction pre - heating time is significantly shorter than that of Comparative Example 3 and Comparative Example 4. The aerosol generation is uniform and the temperature is appropriate. The number of puffs is between 14 and 15, the puffing taste is better, and the experience is better. The specific results are the puffing data results of the receptor materials of Example 2 shown in Table 2. Figure 3 A comparison physical diagram (left - before, right - after) of a receptor material before and after the puffing test provided in Example 2 of this application; please refer to Figure 3 , and the aerosol - generating substrate is carbonized uniformly and sufficiently.

[0070] Table 2 Puffing data results of the receptor materials of Example 2

[0071]

[0072] Example 3

[0073] A method for a sensor material to inductively heat an aerosol - generating substrate, including: taking the 1J50 alloy with a national standard grade as an example, smelting it in a vacuum induction furnace, placing the smelted 1J50 alloy ingot in a crusher for crushing, with an average particle size of 0.4 mm to 0.8 mm; screening out the sensor material with a surface brightness and an average particle size of 0.6 mm. Placing the screened - out sensor material in a cartridge that occupies the mainstream of the market and is launched by Philip Morris International, the world's largest tobacco company in the United States, so that it is in full and uniform contact with the aerosol - generating substrate, and the filling coefficient is 90%, so that multiple sensor materials with the same average particle size inductively heat the aerosol - generating substrate to obtain an aerosol - generating product.

[0074] In addition, prepare the 1J50 alloy into a sensor material with the same size (width: 4 mm, length: 12 mm) as the sensor material in the cartridge that occupies the mainstream of the market and is launched by Philip Morris International, and place it in the cartridge that occupies the mainstream of the market and is launched by Philip Morris International as Comparative Example 5. Place the sensor material of Example 3 in the smoking device and cartridge that occupy the mainstream of the market and are launched by Philip Morris International, the world's largest tobacco company in the United States, for testing. Take the use effect of the same - model smoking device and cartridge products of Philip Morris International as Comparative Example 6.

[0075] It is found that the sensor material made in Example 3 is stable and rapid in the induction pre - heating stage. The induction pre - heating time is significantly shorter than that of Comparative Example 5 and Comparative Example 6. The aerosol generation is uniform and the temperature is appropriate. The number of puffs is between 14 and 15, and the puffing taste is better, and the experience is better. The specific results are the puffing data results of the sensor material of Example 3 shown in Table 3. Figure 4 A comparative physical diagram (left - front, right - back) of a sensor material before and after the puffing test provided in Example 3 of this application; please refer to Figure 4 , and the aerosol - generating substrate is carbonized uniformly and sufficiently.

[0076] Table 3 Puffing data results of the sensor material of Example 3

[0077]

[0078] One or more technical solutions in the embodiments of this application at least further have the following technical effects or advantages:

[0079] (1) Alloy smelting and forming: Using a vacuum induction furnace for alloy smelting can effectively reduce the mixing of impurities and ensure the purity and performance of the alloy. Crushing the smelted alloy ingot into various shapes (spheres, cubes, cuboids, etc.) with an average particle size of 0.1 mm to 3 mm, and different shapes may affect its filling characteristics and contact area when mixing with the aerosol - generating substrate subsequently.

[0080] (2) Screening and mixing: Small receptor materials with the same average particle size are screened out, ensuring that when mixed with the aerosol - generating matrix, the distribution of each receptor material in the matrix is more uniform, which is conducive to achieving a stable and consistent heating effect. The filling coefficient ≥ 80% means that a large number of small receptor materials are tightly packed around the aerosol - generating matrix, providing conditions for sufficient and close contact.

[0081] (3) Product performance advantages: Multiple small receptor materials are evenly filled around the aerosol - generating matrix in each cartridge and are in sufficient and close contact. In this way, when electrified and induced, heating will be faster, more uniform and stable. Because the receptor materials are evenly distributed, heat transfer is more balanced, avoiding local overheating or over - cooling, thus bringing a better puffing taste and improving the user experience.

[0082] The above - mentioned are only the specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for a susceptor material to inductively heat an aerosol - generating substrate, the method comprising: obtaining a susceptor material with a set average particle size; screening out a plurality of the susceptor materials with the same average particle size from the susceptor materials with the set average particle size, mixing them with the aerosol - generating substrate, and controlling the filling coefficient of the mixing so that the plurality of the susceptor materials with the same average particle size inductively heat the aerosol - generating substrate to obtain an aerosol - generating article.

2. The method according to claim 1, characterized in that The set average particle size is from 0.1 mm to 3 mm.

3. The method according to claim 2, wherein The set average particle size is from 0.1 mm to 1.5 mm.

4. The method according to claim 1, wherein The filling coefficient is ≥80%.

5. The method according to claim 4, characterized in that, The filling coefficient is ≥85%.

6. The method according to claim 1, characterized in that, The shape of the susceptor material is a regular shape and / or an irregular shape.

7. The method according to claim 6, characterized in that, The regular shape includes at least one of the following: sphere, cube, cuboid, cylinder, cylindrical tube, sheet.

8. The method according to claim 1, characterized in that, The susceptor material is a material that uses the principle of electromagnetic induction for heating.

9. The method according to claim 1, wherein The obtaining of the susceptor material with the set average particle size includes: successively smelting and casting the raw material to obtain an alloy ingot; crushing the alloy ingot to obtain the susceptor material with the set average particle size.

10. The method according to claim 9, wherein The smelting method is vacuum induction smelting.

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