Preparation method of e-cigarette heating component and e-cigarette heating component

Abstract

The present invention discloses a preparation method for an e-cigarette heating component, which at least includes the following steps: manufacturing a valve metal shell with a receiving groove; using an etching process to corrode a valve metal plate to obtain a heating sheet, the heating sheet including a heating part and a conductance part; through micro-arc oxidation technology, making a ceramic film adhere to the inner surface of the receiving groove or the outer surface of the heating sheet; placing the heating part in the receiving groove, and at least part of the conductance part being exposed outside the valve metal shell, so that the heating sheet and the valve metal shell are separated by the ceramic film; performing laser engraving treatment on the conductance part to obtain an electrode; manufacturing a seat body with leads, and welding the electrode and the leads. The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a preparation method for an e-cigarette heating component with a short heat conduction path and being safer, more durable, and an e-cigarette heating component obtained by using this preparation method.

Description

Technical Field

[0001] The present invention relates to the field of heating devices, and particularly to a preparation method of an e-cigarette heating component and an e-cigarette heating component. Background Art

[0002] As one of the alternatives to traditional cigarettes, e-cigarettes have a wide range of audiences in the market. Since the emergence of e-cigarettes, in-depth research and development work on them has never stopped, and among them, the heat conduction and safety issues of e-cigarettes have received much attention.

[0003] Most of the currently used e-cigarettes generally include a power supply device, a heating component and a controller. The heating components on the market generally include a heating sheet made of ceramic material. The heating sheet is in a thin sheet shape, and a screen-printed resistor / heating resistor is printed on the surface of the ceramic heating sheet, and both ends of the resistor are then connected to the power supply device. When in use, the heating sheet is inserted into the cigarette stick, the power switch is turned on, the resistor is energized to generate heat and the generated heat is transferred to the main body made of ceramic material, and then transferred to the cigarette stick to evaporate the aroma in the cigarette stick for people to smoke.

[0004] The above-mentioned heating components have many problems, including: 1. Since a protective glaze layer is coated on the surface of the resistor, it is easy to damage the heating component during the plugging and unplugging process when replacing the cigarette oil pipe and heavy metals are precipitated in a high-temperature environment; 2. The ceramic substrate is a heat-insulating material with a low heat conduction rate and a large heat capacity, so the heating speed is relatively slow and users need to wait for a long time, resulting in a poor user experience; 3. The process is complex, which easily leads to the resistor falling off or poor conductivity. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a preparation method of an e-cigarette heating component and an e-cigarette heating component with a shortened heat conduction path and higher safety and durability.

[0006] The present invention is realized by the following technical solutions:

[0007] On the one hand, a preparation method for protecting an e-cigarette heating component includes the following steps: making a valve metal shell with a receiving groove; using an etching process to corrode a valve metal plate to obtain a heating sheet, the heating sheet including a heating part and a conductance part; through micro-arc oxidation technology, making a ceramic film adhere to the inner surface of the receiving groove or the outer surface of the heating sheet; placing the heating part in the receiving groove, and at least part of the conductance part is exposed outside the valve metal shell so that the heating sheet and the valve metal shell are separated by the ceramic film; performing laser engraving treatment on the conductance part to obtain an electrode; making a seat body with leads and welding the electrode and the leads.

[0008] In at least one embodiment of the present invention, the micro-arc oxidation technology is specifically implemented through the following steps: configuring an electrolyte, which is a mixed solution composed of a sodium silicate solution with a concentration of 12 g / L - 19 g / L, a sodium hydroxide solution with a concentration of 2 g / L - 8 g / L, and a film-forming additive with a concentration of 4 g / L - 8 g / L; immersing the inner surface of the receiving groove or the outer surface of the heating sheet into the electrolyte; and performing micro-arc discharge under the conditions of a current density of 1.6 A / dm 3 - 2.4 A / dm 3 , a termination voltage of 320 V - 380 V, and a frequency of 800 Hz - 1200 Hz, so that the ceramic film grows on the inner surface of the receiving groove or the outer surface of the heating sheet.

[0009] In at least one embodiment of the present invention, the film-forming additive is potassium fluoride, sodium fluoride, or sodium citrate.

[0010] In at least one embodiment of the present invention, the steps of manufacturing a valve metal shell with a receiving groove specifically include: manufacturing a first shell and a second shell through an etching process, and welding the first shell and the second shell to obtain the valve metal shell.

[0011] In at least one embodiment of the present invention, the receiving groove is opened on the first shell, and the first shell is connected to the second shell along the outer edge of the receiving groove by a pressure welding method.

[0012] In at least one embodiment of the present invention, the length of the first shell is L1, and the length of the second shell is L2, and L1 and L2 satisfy: L1 > L2, so that at least part of the electrode is exposed outside the valve metal shell.

[0013] In at least one embodiment of the present invention, the steps of manufacturing a seat body with leads include manufacturing a limiting frame, and fixing the first shell, the electrode, and the leads through the limiting frame.

[0014] In at least one embodiment of the present invention, the steps of manufacturing a valve metal shell with a receiving groove further specifically include: opening heat insulation holes on the first shell, the second shell, and the limiting frame, and opening a heat insulation groove on the first shell.

[0015] In at least one embodiment of the present invention, the valve metal shell is polished and blued, and the bluing treatment is carried out at a temperature of 400 °C - 500 °C.

[0016] In at least one embodiment of the present invention, in-mold injection molding is performed after the step of welding the electrode and the leads is completed.

[0017] In at least one embodiment of the present invention, both the valve metal shell and the valve metal plate are made of titanium alloy.

[0018] On the other hand, the present invention also protects an e-cigarette heating component, which is prepared by using the preparation method of the e-cigarette heating component in any of the above embodiments.

[0019] Compared with the prior art, the present invention has at least the following advantages:

[0020] The valve metal shell, as the outer shell of the heating component of the present invention, contacts with the external tobacco shreds, etc., increasing the overall strength and preventing the phenomenon of bending and breaking due to insufficient strength during the process of inserting the heating component into the cigarette. In addition, the ceramic film formed by the micro-arc oxidation technology not only realizes the insulation between the valve metal shell and the heating sheet, but also, due to its thin thickness, can ensure that the heat generated by the heating sheet is quickly transmitted to the valve metal outer shell, shortening the waiting time of the user and improving the user experience. At the same time, the ceramic film is thin and directly attached to the inner surface of the receiving groove or the outer surface of the heating sheet. Compared with the prior art, there is no need to additionally add an insulating layer by additive manufacturing, simplifying the structure and facilitating production and processing. In short, the heating mechanism provided by the present invention has a simple overall structure and a concise preparation process, has high practicability, and is convenient for mass production and processing. Description of the Drawings

[0021] The following further details the specific embodiments of the present invention in conjunction with the drawings, where:

[0022] Figure 1 Schematic diagram of the first shell obtained on the valve metal plate in the specific embodiment of the present invention;

[0023] Figure 2 Schematic diagram of the heating sheet obtained on the valve metal plate in the specific embodiment of the present invention;

[0024] Figure 3 is Figure 2 Enlarged schematic diagram of the structure at A in

[0025] Figure 4 Structural diagram of the first shell in the specific embodiment provided by the present invention;

[0026] Figure 5 Structural diagram of the second shell in the specific embodiment provided by the present invention;

[0027] Figure 6 Assembly schematic diagram of the first shell and the heating sheet in the specific embodiment provided by the present invention;

[0028] Figure 7 Process state diagram of assembling the wire feet and the limiting frame after the heating sheet is installed in the valve metal shell in the specific embodiment provided by the present invention;

[0029] Figure 8Schematic diagram of the assembly of the wire leads and the limiting frame after the heating sheet is installed in the valve metal shell in the specific embodiment provided by the present invention;

[0030] Figure 9 Exploded view of the heating component in the specific embodiment provided by the present invention;

[0031] Figure 10 Overall assembly schematic diagram of the heating component in the specific embodiment provided by the present invention;

[0032] Figure 11 Flow chart of the steps of the method for preparing the e-cigarette heating component provided by the present invention;

[0033] Figure 12 Flow chart of the steps for preparing the ceramic film in the specific embodiment provided by the present invention.

[0034] The reference numerals are as follows:

[0035] Valve metal shell 100, first housing 110, receiving groove 111, heat insulation groove 112, second housing 120;

[0036] Heating sheet 200, heating part 210, conductance part 220, electrode 221;

[0037] Ceramic film 300;

[0038] Wire lead 410, limiting frame 420, first limiting cover 421, second limiting cover 422, limiting post 423, base 430;

[0039] Heat insulation hole 500. Specific embodiments

[0040] For ease of understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present invention can be understood more thoroughly and comprehensively. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] On the one hand, the present invention proposes a method for preparing an e-cigarette heating component, as Figure 11 shown, including at least the following steps:

[0042] Step S1110, fabricate a valve metal shell 100 having a receiving groove 111.

[0043] It should be noted that the valve metal shell 100 includes a common integrally cast shell, and also includes a shell composed of a plurality of shells. The combined valve metal shell 100 may include: Figure 1 , 4 , the shell shown in 5.

[0044] In step S1120 , an etching process is used to corrode the valve metal plate to obtain a heating plate 200 . The heating plate 200 includes a heating portion 210 and an electrical conduction portion 220 .

[0045] It can be understood that the heating sheet 200 obtained in this way is an integrated structure with a simple structure, and it is not easy to have circuit problems and breakage problems in subsequent use; through micro-arc oxidation technology, a ceramic film 300 is attached to the surface of the receiving groove 111 or the surface of the heating sheet 200, and the ceramic film 300 is tightly attached to the surface of the receiving groove 111 or the heating sheet 200, which reduces the weight and can achieve insulation of the heating sheet 200 from the outside world. Compared with the existing heating components with printed resistors on the ceramic substrate, the heat conduction speed between the heating sheet 200 and the valve metal shell 100 is accelerated, so that the user can quickly inhale, and in addition, the problem of high brittleness and easy breakage of the ceramic substrate is eliminated, the user's taste is improved, and the service life of the heating component is extended.

[0046] Step S1130, as Figure 6 , 9 As shown, the ceramic film 300 is attached to the heating sheet 200 or the surface of the receiving groove 111 .

[0047] In step S1140 , the heating portion 210 is placed in the receiving groove 111 , and the conductive portion 220 is exposed outside the valve metal shell 100 , so that the heating plate 200 and the valve metal shell 100 are separated by the ceramic membrane 300 .

[0048] It should be noted that the thickness of the ceramic film 300 is only between a few microns and tens of microns, and the small thickness can directly form an insulating layer. The arrangement of the ceramic film 300 avoids leakage of the heating component during use, and there is no need to set up an additional insulating interlayer as in the prior art, and no material addition is required. The structure is simple and easy to process.

[0049] Step S1150 , performing laser engraving on the conductive portion 220 to obtain the electrode 221 .

[0050] It should be noted that the laser engraving process can remove the attachments on the surface of the conductive part 220 , and at the same time, while ensuring that the ceramic film 300 is attached to the conductive part 220 , it can also remove the ceramic film 300 on the electrode 221 to ensure that the electrode 221 can be electrically connected to other components.

[0051] Step S1160: Manufacture a base body with pins 410, and weld the electrode 221 to the pins 410. The pins 410 are connected to an external power supply device, so that the heating part 210 heats the tobacco by means of the electrode 221 for the user to smoke.

[0052] It should be noted that the "valve metal shell 100" and "valve metal plate" involved in the present invention, where "valve metal" refers to metallic substances including aluminum, magnesium, titanium and their alloys. The valve metal can be anodized, and after anodic oxidation, a metal with an interference color related to the thickness of the oxide film can be uniformly formed on its surface. Specifically, a capacitor in which the valve metal is used as the positive electrode, an oxide film is formed on its surface by an electrochemical method as the medium, a liquid or solid (or semiconductor) electrolyte is used as the negative electrode and is in close contact with the oxide film medium, and another metal is used as the negative electrode lead-out is called an electrolytic capacitor.

[0053] A material protection technology in which the valve metal forms an oxide film on its surface by applying an external anodic current in an electrolyte solution is also called micro-arc oxidation technology. Specifically, micro-arc oxidation technology refers to a method of forming a high-quality reinforced ceramic film 300 on the surface of workpieces made of metals and their alloys such as aluminum, titanium, and magnesium on the basis of ordinary anodic oxidation. By using a dedicated micro-arc oxidation power supply to apply a voltage to the workpiece, the metal on the surface of the workpiece interacts with the electrolyte solution to form micro-arc discharges on the surface of the workpiece. Under the action of factors such as high temperature and electric field, a ceramic film 300 is formed on the metal surface to achieve the purpose of strengthening the surface of the workpiece.

[0054] The outstanding features of micro-arc oxidation technology are:

[0055] 1. Greatly improve the surface hardness of the material. The microhardness is between 1000 HV and 2000 HV, and can reach up to 3000 HV, comparable to that of cemented carbide, far exceeding the hardness of high-carbon steel, high-alloy steel and high-speed tool steel after heat treatment.

[0056] 2. Good wear resistance.

[0057] 3. Good heat resistance and corrosion resistance. This fundamentally overcomes the shortcomings of aluminum, magnesium and titanium alloy materials in applications. Therefore, this technology has broad application prospects.

[0058] 4. Have good insulation performance, and the insulation resistance can reach 100 MΩ (megaohm).

[0059] 5. The solution is environmentally friendly and meets the requirements of environmental protection emissions.

[0060] 6. The process is stable and reliable, and the equipment is simple.

[0061] 7. The reaction is carried out at room temperature, with convenient operation and easy to master.

[0062] 8. The ceramic film 300 grown in-situ on the substrate is firmly bonded and the ceramic film 300 is dense and uniform.

[0063] For the present invention, the main use of the micro-arc oxidation technology is high-temperature insulation, and it can work normally in a working environment of 200°C - 380°C for a long time, forming a ceramic film 300 with an insulation strength close to 100 MΩ.

[0064] In an embodiment of the present invention, as Figure 12 shown, the specific process method of micro-arc oxidation is as follows:

[0065] Step S1210, configure the electrolyte, and the electrolyte is a mixed solution composed of a sodium silicate solution with a concentration of 12 g / L - 19 g / L, a sodium hydroxide solution with a concentration of 2 g / L - 8 g / L, and a film-forming additive with a concentration of 4 g / L - 8 g / L.

[0066] It should be noted that in the formula of the electrolyte solution, the sodium silicate solution with a concentration of 12 g / L - 19 g / L is used as the main salt; the sodium hydroxide solution with a concentration of 2 g / L - 8 g / L is used as the pH regulator; the film-forming additive (fluoride) is 4 g / L - 8 g / L. That is to say, the formula of the electrolyte solution includes by weight percentage:

[0067] Sodium silicate solution: 1.2% - 1.9%

[0068] Sodium hydroxide solution: 0.2% - 0.8%

[0069] Film-forming additive: 0.4% - 0.8%

[0070] In the present invention, the film-forming additive can be potassium fluoride, sodium fluoride or sodium citrate, and specific details are not limited here.

[0071] Step S1220, immerse the inner surface of the receiving groove 111 or the outer surface of the heating sheet 200 in the electrolyte;

[0072] Step S1230, perform micro-arc discharge under the conditions of a current density of 1.6 A / dm 3 - 2.4 A / dm 3 , a termination voltage of 320 v - 380 v, and a frequency of 800 hz - 1200 hz, so as to form a ceramic film 300 on the inner surface of the receiving groove 111 or the outer surface of the heating sheet 200.

[0073] It is understandable that after the heating sheet 200 or the valve metal shell 100 is subjected to micro-arc oxidation treatment, it is also necessary to clean it with a neutral ultrasonic cleaning solution and boil it in water at a temperature above 80°C. In this way, a ceramic film 300 of an oxide will be formed on the heating sheet 200 or the valve metal shell 100 after micro-arc oxidation treatment. At the same time, some fine pores will be generated on the ceramic film 300 of the oxide attached to the surface of the heating sheet 200 or the valve metal shell 100. Then, the heating sheet 200 or the valve metal shell 100 with the ceramic film 300 of the attached oxide is dried. After high-temperature drying, these pores will be closed, that is, the pores will disappear, and then subsequent assembly steps will be carried out.

[0074] It should be noted that the oxide (also called the sealing material) formed on the surface of the heating sheet 200 or the valve metal shell 100 can be aluminum oxide or nano-titanium oxide. Specifically, it is not limited here. The type of the formed oxide depends on the metal type of the heating sheet 200 or the valve metal shell 100. In this embodiment, the oxide formed on the surface of the heating sheet 200 or the valve metal shell 100 can be nano-titanium oxide. If the type of the formed oxide is different, the formula of the electrolyte will be different.

[0075] As can be seen from the above, in the preparation process, only the obtained heating sheet 200 or valve metal shell 100 needs to be placed in the electrolyte component under the action of the instantaneous high temperature and high pressure generated by arc discharge to obtain the attached ceramic film 300. Through the micro-arc oxidation technology of the present invention, there is no need to additionally spray or set an insulating layer for additive manufacturing as in the prior art. The operation is convenient, and the finally obtained heating component has a simple structure and is convenient for mass production and processing.

[0076] The valve metal shell serves as the outer shell of the heating component of the present invention and contacts with external tobacco shreds, etc., increasing the overall strength and preventing the phenomenon of bending and breaking due to insufficient strength during the process of inserting the heating component into a cigarette. In addition, the ceramic film formed by the micro-arc oxidation technology not only realizes the insulation between the valve metal shell and the heating sheet, but also can ensure that the heat generated by the heating sheet is quickly transmitted to the valve metal outer shell because of its thin thickness, shortening the waiting time of the user and improving the user experience. At the same time, the ceramic film is thin and directly attached to the inner surface of the receiving groove or the outer surface of the heating sheet. Compared with the prior art, there is no need to additionally add an insulating layer for additive manufacturing, simplifying the structure and facilitating production and processing. In short, the heating mechanism provided by the present invention has a simple overall structure and a concise preparation process, has high practicability, and is convenient for mass production and processing.

[0077] In one embodiment of the present invention, as Figure 1-6 shown in FIG. 9, the valve metal shell 100 is welded by a first shell 110 and a second shell 120, with a simple structure and being easy for mass production and processing.

[0078] In one embodiment of the present invention, the steps of manufacturing the valve metal shell 100 with the receiving groove 111 specifically include that both the first shell 110 and the second shell 120 are made by an etching process, that is, the first shell 110, the second shell 120, and the heating sheet 200 can all be obtained on the valve metal plate through the cooperation of the etching process and the cutting technology, so that the valve metal shell 100 can be made. As Figure 1-3 shown, the manufacturing process of the second shell 120 is the same as that of the first shell 110, and the display is omitted. Applying the technology of this embodiment, the raw materials for manufacturing are easy to obtain, the technical threshold is reduced, and at the same time, compared with the heating components obtained by other methods, the volume is smaller and the weight is lighter, which is more suitable for the portability requirements of electronic cigarettes.

[0079] In one embodiment of the present invention, as Figure 1 , 6 , as shown in FIG. 9, the receiving groove 111 is formed in the first shell 110, and the first shell 110 is connected to the second shell 120 by a pressure welding method along the outer edge of the receiving groove 111, ensuring the stable connection between the first shell 110 and the second shell 120 and realizing the efficient conduction of thermal energy at the same time.

[0080] Preferably, the outer ends of the first shell 110 and the second shell 120 on the side for loading the heating part 210 are provided in a sword shape to facilitate insertion into the cigarette.

[0081] In one embodiment of the present invention, as Figure 4 , 5 , as shown in FIG. 9, by making the second shell 120 shorter than the first shell 110, at least part of the electrode 221 is exposed outside the valve metal shell 100. Specifically, as shown in the attached drawings, the length of the first shell 110 is L1, and the length of the second shell 120 is L2. This setting limits the transmission path of the circuit on the one hand, and on the other hand, the first shell 110 also supports the heating sheet 200 to facilitate the stable connection of the limiting frame 420. At the same time, compared with the connection method of the electrode 221 in the existing technology, this connection method of the present invention also saves more space and is more suitable for the portability requirements of electronic cigarettes.

[0082] In one embodiment of the present invention, as Figure 4 , 5 , as shown in FIG. 9, the steps of manufacturing the seat body with the pin 410 specifically include manufacturing the limiting frame 420. The seat body includes the pin 410 and the limiting frame 420. The first shell 110, the electrode 221, and the pin 410 are fixed by the limiting frame 420. Since the first shell 110 is longer than the second shell 120, the second shell 120 is naturally clear at the fixed connection of the limiting frame 420, which is convenient for the limiting frame 420 to quickly install the first shell 110, the electrode 221, and the pin 410.

[0083] In one embodiment of the present invention, as Figure 7-9 shown, the limiting frame 420 includes a first limiting cover 421 and a second limiting cover 422 that are inserted into each other in opposite directions. A limiting post 423 is provided on the first limiting cover 421. The limiting post 423 passes through the first housing 110, the heating sheet 200, and the pin 410 and is inserted into the second limiting cover 422, enabling the heating component of the present invention to be quickly assembled and achieve stable connection.

[0084] In one embodiment of the present invention, as Figure 4-9 shown, the steps of manufacturing the valve metal shell 100 having the receiving groove 111 further specifically include that heat insulation holes 500 are provided on the first housing 110, the second housing 120, and the limiting frame 420, and a heat insulation groove 112 is further provided on the first housing 110. As Figure 9 can be seen, the heat insulation holes 500 and the heat insulation groove 112 are both provided on the conductance part 220. Specifically, the heat insulation holes 500 are further provided on the first housing 110 and the second housing 120, and are provided in the middle of each hole position for the limiting post 423 to pass through, so that the holes are evenly and reasonably distributed. The heat insulation holes 500 and the heat insulation groove 112 are used to form heat insulation and reduce the heat loss generated by the heating sheet 200 on one side of the conductance part 220.

[0085] In one embodiment of the present invention, as Figure 9 , 10 shown, the seat body further includes a base 430. Inserting the pin 410 into the base 430 facilitates assembly. Of course, those skilled in the art can also choose a clamp connection or other quick connection methods according to actual needs.

[0086] In one embodiment of the present invention, the valve metal shell 100 is polished and blued. The polishing method can be sandpaper polishing. For example, the valve metal shell 100 can be polished successively with 600 - grit sandpaper and 1000 - grit sandpaper, or it can also be polished by a polishing machine to make the appearance flat without interlayers. The bluing treatment should be carried out at a temperature of 400°C to 500°C. In addition, the solder joints around the valve metal shell 100 can also be polished by rubbing with sandpaper to enhance the overall aesthetic appearance of the valve metal shell 100.

[0087] In one embodiment of the present invention, after welding the welding electrode 221 to the pin 410, the whole needs to be placed in a forming mold and injection - molded with a high - temperature resistant plastic material to obtain the whole heating component.

[0088] Preferably, both the valve metal shell and the valve metal plate are made of titanium alloy. Since titanium metal, as one of the valve metals, also has the characteristics of high strength, low density, good corrosion resistance, and high heat resistance, the e-cigarette heating component made of titanium alloy is relatively light and easy to hold, and has good comprehensive performance, capable of having a long service life.

[0089] On the other hand, the present invention provides an e-cigarette heating component, which is prepared by using the preparation method of the e-cigarette heating component in any of the above embodiments. Any heating component obtained by the above preparation method falls within the protection scope of the present invention.

[0090] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the technical solutions of the present invention. For the quality inspection links not specifically listed in the technical solutions, as well as the steps of marking the resistance value and engraving the model, they are common steps in the preparation process of the e-cigarette heating component and will not be enumerated one by one.

Claims

1. Preparation method of an e-cigarette heating component, characterized in that, it comprises the following steps: Fabricate a valve metal shell with a receiving groove; Adopt an etching process to corrode a valve metal plate to obtain a heating sheet, and the heating sheet includes a heating part and a conductance part; By means of micro-arc oxidation technology, attach a ceramic film to the inner surface of the receiving groove or the outer surface of the heating sheet; Place the heating part in the receiving groove, and at least part of the conductance part is exposed outside the valve metal shell, so that the heating sheet and the valve metal shell are separated by the ceramic film; Perform laser engraving treatment on the conductance part to obtain an electrode; Fabricate a seat body with leads, and weld the electrode and the leads, wherein, the micro-arc oxidation technology is realized through the following steps: Configure an electrolyte, and the electrolyte is a mixed solution composed of a sodium silicate solution with a concentration of 12 g / L - 19 g / L, a sodium hydroxide solution with a concentration of 2 g / L - 8 g / L, and a film-forming additive with a concentration of 4 g / L - 8 g / L; Immerse the inner surface of the receiving groove or the outer surface of the heating sheet in the electrolyte; Under the conditions of a current density of 1.6 A / dm 3 -2.4 A / dm 3 , micro-arc discharge is carried out under the conditions of a termination voltage of 320 V - 380 V and a frequency of 800 Hz - 1200 Hz, so that the ceramic film adheres to the inner surface of the receiving groove or the outer surface of the heating sheet.

2. The preparation method of the e-cigarette heating component according to claim 1, characterized in that, the film-forming additive is potassium fluoride, sodium fluoride or sodium citrate.

3. The preparation method of the e-cigarette heating component according to claim 1, characterized in that, the step of fabricating the valve metal shell with a receiving groove specifically includes: Fabricate a first shell and a second shell through an etching process, and weld the first shell and the second shell to obtain the valve metal shell.

4. The preparation method of the e-cigarette heating component according to claim 3, characterized in that, the receiving groove is opened on the first shell, and the first shell is connected to the second shell by pressure welding along the outer edge of the receiving groove.

5. The preparation method of the e-cigarette heating component according to claim 3, characterized in that, the length of the first shell is L1, the length of the second shell is L2, and L1 and L2 satisfy: L1 > L2, so that at least part of the electrode is exposed outside the valve metal shell.

6. The preparation method of the e-cigarette heating component according to claim 5, characterized in that, in the step of fabricating the seat body with leads, it includes: Fabricate a limiting frame, and fix the first shell, the electrode and the leads through the limiting frame.

7. The preparation method of the e-cigarette heating component according to claim 6, characterized in that, the step of fabricating the valve metal shell with a receiving groove further specifically includes: Open heat insulation holes on the first shell, the second shell and the limiting frame, and open a heat insulation groove on the first shell.

8. The preparation method of the e-cigarette heating component according to claim 1, characterized in that: Perform polishing treatment and bluing treatment on the valve metal shell, and the bluing treatment is carried out at a temperature of 400°C - 500°C.

9. The preparation method of the e-cigarette heating component according to claim 1, characterized in that, After completing the step of welding the electrode and the leads, perform in-mold injection molding.

10. The preparation method of the e-cigarette heating component according to claim 1, characterized in that, Both the valve metal shell and the valve metal plate are made of titanium alloy.

11. An e-cigarette heating component, characterized in that it is prepared by using the preparation method of the e-cigarette heating component according to any one of claims 1 to 10.

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