Small-caliber electric heating titanium vacuum cup and manufacturing process thereof

Abstract

The invention relates to the technical field of vacuum cups, in particular to a small-caliber electric heating titanium vacuum cup and a manufacturing process thereof, and provides the following technical scheme that the small-caliber electric heating titanium vacuum cup comprises a titanium shell and a titanium inner container; a wafer type heating disc is arranged in the inner wall area of the bottom of the titanium inner container, a heat insulation ferrule is arranged at the position, corresponding to the wafer type heating disc, of the outer ring of the titanium inner container in a sleeved mode, a heat insulation ring welded to the outer ring of the titanium inner container is further arranged outside the heat insulation ferrule, and the heat insulation ferrule is arranged between the heat insulation ring and the titanium inner container. Aiming at the problem that the vacuum environment is easily damaged when the titanium electric heating vacuum cup is welded with a heating disc in a vacuum state, the titanium electric heating vacuum cup is adaptive to the characteristics of a titanium material, breaks through the process bottleneck, takes drinking water sanitation and sealing reliability into consideration, and assists the large-scale production of the titanium electric heating vacuum cup.

Description

Technical Field

[0001] This invention relates to the field of thermos cup technology, and in particular to a small-diameter electrically heated titanium thermos cup and its manufacturing process. Background Technology

[0002] Electric thermos flasks, with their combined heat preservation and instant heating functions, have become widely used portable drinking vessels in daily life. Currently, most electric thermos flasks on the market use stainless steel for their inner liner. The traditional manufacturing process is as follows: inner liner forming → butt welding of the heating plate → welding of the support frame → assembly and welding of the inner liner and outer shell → vacuuming. The vacuuming process for stainless steel is approximately 550℃, while the heating plate used in electric thermos flasks is mostly made of aluminum tubing. Aluminum has a melting point of 600℃, which is higher than the vacuuming temperature threshold for stainless steel. Based on this temperature compatibility, stainless steel electric thermos flasks can complete the welding and assembly of all components, including the heating plate and support frame, before the vacuuming process, and then send the entire assembly into a high-temperature furnace for vacuuming. This process is mature, easy to operate, and can meet the needs of routine production.

[0003] However, stainless steel electric thermos cups have certain limitations. On the one hand, stainless steel may leach heavy metal ions if it comes into contact with acidic or alkaline beverages during long-term use, posing a drinking water safety hazard. On the other hand, stainless steel has a relatively high density, resulting in a relatively heavy overall weight for the thermos cup, making it less portable. Titanium, with its low density, high strength, and chemical stability, has become an ideal material to replace stainless steel for thermos cup liners. Titanium electric thermos cups are not only lighter but also eliminate the risk of heavy metal leaching, significantly improving drinking safety. However, the vacuuming process for titanium requires specific technical requirements. Effective vacuum crystallization can only be achieved at a high temperature of 850℃ to achieve the ideal heat preservation effect. This temperature is far higher than the melting point of aluminum heating plates. If the traditional process for stainless steel thermos cups is used, welding the heating plate before vacuuming will directly cause the heating plate to melt and be damaged during the high-temperature vacuuming process, rendering the product unusable.

[0004] The manufacturing process of titanium-made electrically heated insulated cups presents the following problems: After vacuum crystallization, the cup body forms a sealed vacuum cavity. When a heating element is subsequently welded to the outside of the cup body, the high temperatures generated during the welding process can easily cause changes in the internal air pressure of the vacuum cavity, disrupting the original vacuum environment and leading to a significant decrease in the insulated cup's heat retention performance. Therefore, this invention proposes a small-diameter electrically heated titanium insulated cup. Summary of the Invention

[0005] The purpose of this invention is to address the problem in the prior art that welding the heating plate in a vacuum state in a titanium electric heating thermos cup can easily damage the vacuum environment, and to propose a small-diameter electric heating titanium thermos cup and its manufacturing process.

[0006] The technical solution of the present invention: a small-diameter electrically heated titanium thermos cup, comprising a titanium outer shell and a titanium inner liner;

[0007] The bottom inner wall area of ​​the titanium inner liner is provided with a circular heating plate. A heat insulation ring is fitted on the outer ring of the titanium inner liner at the position corresponding to the circular heating plate. A heat insulation ring is also provided outside the heat insulation ring and welded to the outer ring of the titanium inner liner. The heat insulation ring is located between the heat insulation ring and the titanium inner liner.

[0008] Optionally, the titanium outer shell and the edge of the titanium inner liner are connected by an annular sealing weld to form a closed vacuum cavity, and the weld of the annular sealing weld is a continuous structure without any breaks.

[0009] Optionally, a continuous circumferential weld is formed between the outer periphery of the circular heating plate and the titanium inner liner.

[0010] Optionally, the bottom surface of the circular heating plate is also equipped with a temperature control component and an auxiliary seal. The bottom surface of the circular heating plate is provided with an annular mounting groove along its circumference, and the auxiliary seal is movably installed with the mounting groove.

[0011] Optionally, the cross-section of the mounting annular groove is an inverted "T" shape, and the auxiliary sealing element is made of food-grade rubber and fitted with a titanium inner liner.

[0012] Optionally, the top of the auxiliary seal that is fitted into the mounting annular groove has a "T" shape, and the bottom of the auxiliary seal has an "L" shape.

[0013] Optionally, the temperature control component includes a temperature sensor and a control circuit board. The temperature sensor is embedded in the central through hole of the circular heating plate, and the control circuit board is fixed to the side of the circular heating plate by screws and is electrically connected to the circular heating plate.

[0014] This invention also proposes a manufacturing process for a small-diameter electrically heated titanium thermos cup, comprising the following steps:

[0015] Step 1: Inner and outer shell forming: Titanium inner liner and outer shell are made by stamping and stretching titanium sheet in one piece, ensuring that the size of the titanium outer shell is compatible with the titanium inner liner, and reserving welding edges for the cup mouth and installation positions for the bottom;

[0016] Step 2: Assembly and welding of the inner and outer shells: A snap-fit ​​heat insulation ring is fitted on the outside of the corresponding welding position of the circular heating plate of the titanium inner liner, and a heat insulation ring is fitted on the outside of the heat insulation ring. The heat insulation ring is welded to the titanium inner liner, and the titanium inner liner after welding the heat insulation ring is embedded into the titanium outer shell, so that the edges of the cup mouths are aligned. The cup mouth is welded using a ring sealing welding process to form a continuous and uninterrupted weld, completing the initial forming of the sealed cavity.

[0017] Step 3, Vacuum Crystallization: The welded cup body is sent into a vacuum furnace, evacuated to the preset vacuum level, and then kept at a temperature and pressure for a period of time. It is then cooled with the furnace to complete the vacuum crystallization process and form a stable vacuum chamber.

[0018] Step 4, Pre-welding preparation: Adjust the laser power, beam speed and beam angle of the laser welding equipment; degrease and remove oxide layer from the welding surface of the circular heating plate; clean and polish the vacuum-qualified crystallization cup and the crystallized circular heating plate.

[0019] Step 5: Welding the heating plate: Weld the circular heating plate in a ring along its outer edge to form a continuous weld. During welding, a mixture of argon and helium protective gas is continuously introduced.

[0020] Step 6: Temperature control component installation: Assemble the temperature sensor, control circuit board, and circular heating plate, and complete the electrical connection;

[0021] Step 7, Vacuum Testing and Finished Product Inspection: Test the vacuum level of the cup body, the sealing performance of the welds, the performance of the temperature control components, and the performance of the auxiliary sealing components.

[0022] Optionally, after the circular heating plate is welded in step five, the auxiliary sealing component is assembled with the mounting annular groove.

[0023] The mixed protective gas is used to reduce the temperature in the welding area.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] This invention uses an auxiliary sealing component that is adapted to the inner wall of a titanium inner liner. The "L"-shaped end of the auxiliary sealing component fits into the transition area, which effectively enhances the sealing performance of the bottom of the cup, avoids the risk of leakage and water seepage after welding under vacuum, and prevents bacteria from growing in the gaps.

[0026] The heat insulation ring of this invention is a snap-on type, which does not require ring welding for fixation. Its function is to block the heat generated during the welding of the heating plate and reduce the damage to the vacuum layer. The heat insulation ring is welded around one circumference to block the high temperature generated when the circular heating plate is energized and heated, thereby reducing heat transfer.

[0027] Further process optimization to adapt to the characteristics of titanium material, breaking through the process bottleneck, through the design of vacuum crystallization first and then welding heating plate, precisely matches the special requirement of titanium material to be vacuumed at 850℃, completely avoiding the problem of aluminum heating plate melting and damage caused by high temperature vacuuming in the traditional stainless steel thermos cup process, realizing the adaptation and integration of titanium material and electric heating function, and providing a feasible path for the large-scale production of titanium electric heating thermos cups.

[0028] In summary, this invention solves the problems of incomplete welding, vacuum damage, and leakage in small-diameter titanium cups under vacuum conditions. It also overcomes process bottlenecks by adapting to the characteristics of titanium material, ensuring both drinking water hygiene and sealing reliability, and facilitating the large-scale production of titanium electric heating insulated cups. Attached Figure Description

[0029] Figure 1 This is a structural diagram of a small-diameter electrically heated titanium thermos.

[0030] Figure 2 for Figure 1 An exploded view of the titanium outer shell and the circular heating plate.

[0031] Figure 3 for Figure 2 Exploded view of the auxiliary sealing component and the disc-type heating plate;

[0032] Figure 4 yes Figure 1 A front view of the cross-section;

[0033] Figure 5 This is a schematic diagram illustrating the manufacturing process of a small-diameter electrically heated titanium thermos cup.

[0034] Figure 6 A schematic diagram showing the state of the heat insulation ring fitted onto the outside of the titanium inner liner;

[0035] Figure label:

[0036] 1. Titanium outer shell; 2. Titanium inner liner; 3. Circular heating plate; 30. Mounting annular groove; 4. Temperature control component; 6. Auxiliary sealing component; 7. Vacuum chamber; 8. Heat insulation ring; 9. Heat insulation collar. Detailed Implementation

[0037] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0038] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0039] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] Example 1

[0043] like Figures 1 to 6 As shown, the present invention proposes a small-diameter electrically heated titanium thermos cup, which includes a titanium outer shell 1 and a titanium inner liner 2. The edges of the cup mouth of the titanium outer shell 1 and the titanium inner liner 2 are sealed by an annular sealing weld to form a closed vacuum cavity 7. The weld of the annular sealing weld is a continuous structure without breaks, which can ensure the airtightness of the vacuum cavity 7 and avoid loss of heat preservation performance.

[0044] like Figure 2 and Figure 4 As shown, the bottom inner wall area of ​​the titanium inner liner 2 has a circular heating plate 3. The temperature control component 4 includes a temperature sensor and a control circuit board. The temperature sensor is embedded in the central through-hole of the circular heating plate 3, which can monitor the water temperature in the cup in real time. The control circuit board is fixed to the side of the circular heating plate 3 with screws and is electrically connected to the circular heating plate 3 to achieve precise control of the heating power. How the temperature is controlled can be achieved using an existing circuit temperature control system, which will not be elaborated further. Figure 6 As shown, a heat insulation ring 9 is installed on the outer ring corresponding to the position of the circular heating plate 3, and a heat insulation ring 8 is installed on the outside of the heat insulation ring 9. The heat insulation ring 8 is circumferentially welded to the titanium inner liner 2. The titanium inner liner 2 after welding the heat insulation ring 8 is embedded into the titanium outer shell 1, so that the edges of the cup mouths are aligned. The cup mouths are welded using a ring sealing welding process to form a continuous weld without breaks, thus completing the initial forming of the sealed cavity. The heat insulation ring 8 and the heat insulation ring 9 prevent the high temperature generated during the welding of the circular heating plate 3 from penetrating into the vacuum cavity 7, ensuring the vacuum insulation effect.

[0045] In this embodiment, the continuous and uninterrupted annular sealing weld structure of the titanium outer shell 1 and the titanium inner liner 2 at the edge of the cup mouth firstly ensures that the closed vacuum cavity 7 remains in a stable and sealed state. The heat transfer between the inside of the cup and the outside is blocked by the vacuum insulation properties, thereby achieving the basic heat preservation function.

[0046] When heating is required, the control circuit board in the temperature control component 4 outputs an electrical signal to the circular heating plate 3, driving the heating plate to generate heat and conduct heat to the water in the cup. Simultaneously, a temperature sensor embedded in the central through-hole of the circular heating plate 3 collects real-time water temperature data and feeds this data back to the control circuit board. The control circuit board compares the preset temperature threshold with the real-time water temperature data and automatically adjusts the electrical signal strength output to the heating plate using the existing circuit temperature control system, achieving precise control of the heating power. When the water temperature reaches the preset value, the control circuit board cuts off or reduces the power supply, stopping heating or maintaining a constant temperature.

[0047] Example 2

[0048] like Figures 1 to 4 As shown, based on Embodiment 1, the bottom surface of the circular heating plate 3 in this embodiment is also equipped with a temperature control component 4 and an auxiliary sealing component 6. The bottom surface of the circular heating plate 3 has an annular mounting groove 30 along its circumference. The cross-section of the mounting groove 30 is an inverted "T" shape. The auxiliary sealing component 6 is movably installed with the mounting groove 30. The auxiliary sealing component 6 is made of food-grade rubber and is fitted with the titanium inner liner 2 to form a secondary seal, further improving the sealing reliability.

[0049] Furthermore, the top of the auxiliary seal 6 that engages with the mounting annular groove 30 has a "T" shape, which ensures a secure engagement between the auxiliary seal 6 and the mounting annular groove 30 and prevents it from falling off; the bottom of the auxiliary seal 6 has an "L" shape, and the horizontal section of the "L" shape fits tightly against the inner wall of the titanium inner liner 2, which increases the sealing contact area.

[0050] In this embodiment, the auxiliary seal 6 is installed after welding. One end of the auxiliary seal 6 is pressed against the annular groove 30. Since the auxiliary seal 6 is made of soft material, it can be installed easily. After installation, the side of the auxiliary seal 6 is sealed against the inner wall of the titanium inner liner 2, which greatly increases the sealing contact area. It forms a double sealing protection with the one-time sealing cooperation formed by the annular weld in Embodiment 1.

[0051] Combination Figure 5 As shown, the present invention also proposes a manufacturing process for a small-diameter electrically heated titanium thermos cup according to the above embodiments one and two, including the following processing steps:

[0052] Step 1: Inner and outer shell forming: Titanium outer shell 1 and titanium inner liner 2 are prepared by stamping and stretching titanium sheet to ensure that the size of titanium outer shell 1 is compatible with titanium inner liner 2, and to reserve the welding edge of the cup mouth and the bottom mounting position; the depth of the bottom mounting position is compatible with the height of the temperature control component 4 to ensure that there is no interference in the subsequent installation of components;

[0053] Step 2, Inner and Outer Shell Assembly and Welding: A snap-fit ​​heat insulation ring 9 is fitted on the outside of the corresponding welding position of the titanium inner liner 2 and the corresponding circular heating plate 3, and a heat insulation ring 8 is fitted on the outside of the heat insulation ring 9. The heat insulation ring 8 is welded to the titanium inner liner 2, and the titanium inner liner 2 after welding the heat insulation ring 8 is embedded into the titanium outer shell 1, so that the edges of the cup mouths are aligned. The cup mouths are welded using a ring sealing welding process to form a continuous weld without any breaks, thus completing the initial forming of the closed cavity.

[0054] Step 3, Vacuum Crystallization: The welded cup body is placed in a vacuum furnace, evacuated to the preset vacuum level, and held at temperature and pressure for a period of time. It then cools in the furnace to complete the vacuum crystallization process, forming a stable vacuum chamber 7. Specifically, a stepped heating strategy is adopted: the temperature is increased to 850℃ at a rate of 5-8℃ / min, and then evacuated to the preset vacuum level ≤5×10⁻⁶. -3 Pa; Hold at this temperature and vacuum for 2-3 hours, then cool with the furnace to room temperature at a rate of 3-5℃ / min to complete the vacuum crystallization process and form a stable vacuum chamber 7. During the cooling process, maintain the vacuum environment to prevent air from entering and damaging the vacuum layer.

[0055] Step 4, Pre-welding preparation: Adjust the laser power, output speed and output angle of the laser welding equipment to make the laser beam accurately focus on the welding position of the circular heating plate 3. Adjust the laser power to 1500W, the output speed to 3-5mm / s, and the laser output angle to 30-45° to ensure that the laser beam is accurately focused on the bonding area of ​​the outer periphery of the circular heating plate 3.

[0056] The welding surface of the circular heating plate 3 is degreased and the oxide layer is removed. Alkaline degreaser is used for ultrasonic degreasing at 55℃ for 12.5 minutes. Then, the surface oxide layer is removed by fine grinding. After treatment, it is wiped clean with anhydrous ethanol and dried to avoid oil stains and oxide layer affecting the welding quality.

[0057] Place the processed circular heating plate 3 into an oven and preheat it at 90℃ for 30 minutes to remove residual moisture on the surface and reduce porosity defects during welding.

[0058] Step 5: Welding the heating plate: Perform circumferential welding on the outer peripheral edge of the circular heating plate 3 to form a continuous weld with a width of 1.5-2mm. During welding, a mixed protective gas of argon and helium is continuously introduced, and the gas is arranged circumferentially.

[0059] A protective gas mixture of 92% argon and 8% helium is continuously introduced through an annular gas hood, with the gas flow rate controlled at 15-25 L / min. Argon uses its inert properties to isolate the air and prevent oxidation of the welding area, while helium uses its high thermal conductivity to quickly reduce the temperature of the welding area, ultimately ensuring that the weld line is free from oxidation, discoloration, and blackening.

[0060] The main functions of high-purity argon gas shielded welding include: protecting the welding area, preventing oxidation, reducing fumes, and providing cooling. These functions are explained in detail below:

[0061] Protecting the welding area: Argon gas is used as a protective gas to envelop the welding area, creating an oxygen-free environment to prevent oxidation and contamination, ensuring that the welding area is clean and pure, and improving the quality and strength of the weld.

[0062] Preventing oxidation: Argon gas isolates the welding area from the outside air, preventing oxidation reactions that cause the weld line to discolor and turn black, keeping the weld area clean, ensuring welding quality, and improving the strength and corrosion resistance of the welded joint;

[0063] Reduce welding fumes and slag particles: Argon can be used to purge the welding area, carrying away fumes and aerosols, reducing the amount of smoke and slag particles generated during the welding process and reducing post-weld processing work;

[0064] Cooling effect: Argon gas helps cool the welding torch, electrodes and welding area, controls the welding temperature, reduces the risk of thermal deformation, ensures the stability of the welding process and improves welding quality.

[0065] After welding is completed, wait for the weld to cool to room temperature, align the food-grade silicone rubber auxiliary seal 6 with the inverted "T" shaped mounting annular groove 30 of the circular heating plate 3 through the "T" shaped top, and use a press-fit process with a pressure of 5-8MPa to complete the assembly, ensuring that the "L" shaped structure at the bottom of the auxiliary seal 6 fits tightly with the inner wall of the titanium inner liner 2, with no gaps on the fitting surface;

[0066] Step 6: Temperature control component installation: Assemble the temperature sensor, control circuit board and circular heating plate 3, and complete the electrical connection;

[0067] The PT100 temperature sensor is embedded in the central through hole of the circular heating plate 3, with the sensor probe flush with the top surface of the heating plate. The control circuit board is fixed to the preset mounting platform on the side of the circular heating plate 3 using stainless steel Phillips head screws. The electrical connection between the control circuit board, the heating plate, and the temperature sensor is completed, and the connection is sealed with insulating heat shrink tubing to prevent short circuits. At the same time, it is checked that the auxiliary sealing part 6 is not deformed due to assembly.

[0068] Step 7, Vacuum Testing and Finished Product Inspection: Test the vacuum level of the cup body, the sealing performance of the welds, the performance of the temperature control component 4, and the auxiliary sealing component 6;

[0069] Vacuum degree testing: The cup body was tested using a helium mass spectrometer leak detector, with a vacuum degree ≤ 5 × 10⁻⁶. -3 If a leak is detected, return to step three and re-weld.

[0070] Weld sealing test: Pour room temperature water into the cup, let it stand for 24 hours, and observe the weld and the bottom of the cup. If there is no water seepage or leakage, it is considered qualified.

[0071] Temperature control component performance test: Power-on test heating power standard value 200-500W, temperature control accuracy error ≤±2℃, confirm that the temperature sensor feedback is sensitive and the control circuit board can normally realize heating start and stop;

[0072] Auxiliary sealing component performance test: Simulate the internal pressure of the cup to 0.2MPa and maintain it for 30 minutes. If the auxiliary sealing component does not fall off or deform, it is considered qualified. After all test items meet the standards, it is a finished product.

[0073] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A small-diameter electrically heated titanium thermos cup, characterized in that, It includes a titanium outer shell (1) and a titanium inner liner (2); The bottom inner wall area of ​​the titanium inner liner (2) is provided with a circular heating plate (3). The outer ring of the titanium inner liner (2) is fitted with a heat insulation ring (9) at the position corresponding to the circular heating plate (3). The heat insulation ring (9) is also provided with a heat insulation ring (8) welded to the outer ring of the titanium inner liner (2). The heat insulation ring (9) is located between the heat insulation ring (8) and the titanium inner liner (2).

2. The small-diameter electrically heated titanium thermos cup according to claim 1, characterized in that, The titanium outer shell (1) and the titanium inner liner (2) form a closed vacuum cavity (7) by an annular sealing weld at the cup mouth edge, and the weld seam of the annular sealing weld is a continuous structure without any breaks.

3. The small-diameter electrically heated titanium thermos cup according to claim 1, characterized in that, A continuous annular weld is formed between the outer periphery of the circular heating plate (3) and the titanium inner liner (2).

4. A small-diameter electrically heated titanium thermos cup according to claim 3, characterized in that, The bottom surface of the circular heating plate (3) is also equipped with a temperature control component (4) and an auxiliary sealing component (6). The bottom surface of the circular heating plate (3) is provided with an annular mounting groove (30) along its circumference. The auxiliary sealing component (6) is movably installed with the mounting groove (30).

5. A small-diameter electrically heated titanium thermos cup according to claim 4, characterized in that, The cross-section of the installation annular groove (30) is an inverted "T" shape, and the auxiliary sealing element (6) is made of food-grade rubber and fitted with a titanium inner liner (2).

6. A small-diameter electrically heated titanium thermos cup according to claim 5, characterized in that, The top of the auxiliary seal (6) that is fitted into the mounting annular groove (30) is a "T" shaped structure, and the bottom of the auxiliary seal (6) is an "L" shaped structure.

7. A small-diameter electrically heated titanium thermos cup according to claim 4, characterized in that, The temperature control component (4) includes a temperature sensor and a control circuit board. The temperature sensor is embedded in the central through hole of the disc heating plate (3). The control circuit board is fixed to the side of the disc heating plate (3) by screws and is electrically connected to the disc heating plate (3).

8. A manufacturing process for a small-diameter electrically heated titanium thermos cup according to any one of claims 1-7, characterized in that, The following processing steps are included: Step 1: Inner and outer shell forming: Titanium inner liner (2) and titanium outer shell (1) are made by stamping and stretching titanium sheet through an integrated forming process, ensuring that the size of the titanium outer shell (1) matches the titanium inner liner (2), and reserving the welding edge of the cup mouth and the bottom installation position; Step 2, Inner and Outer Shell Assembly and Welding: A snap-fit ​​heat insulation ring (9) is fitted on the outside of the corresponding welding position of the titanium inner liner (2) and the corresponding circular heating plate (3), and a heat insulation ring (8) is fitted on the outside of the heat insulation ring (9). The heat insulation ring (8) is welded to the titanium inner liner (2), and the titanium inner liner (2) after welding the heat insulation ring (8) is embedded into the titanium outer shell (1) so that the edges of the cup mouths are aligned. The cup mouths are welded using a ring sealing welding process to form a continuous weld without breaks, thus completing the initial forming of the closed cavity. Step 3, Vacuum Crystallization: The welded cup body is sent into a vacuum furnace, evacuated to the preset vacuum level, and kept warm and pressured for a period of time. It is then cooled with the furnace to complete the vacuum crystallization process and form a stable vacuum chamber (7). Step 4: Pre-welding preparation: Adjust the laser power, output speed and output angle of the laser welding equipment, and degrease and remove oxide layer from the welding surface of the circular heating plate (3); clean and polish the vacuum qualified crystallization cup and the crystallized circular heating plate (3); Step 5: Welding the heating plate: Weld the circular heating plate (3) along the outer peripheral edge to form a continuous weld. At the same time as welding, a mixture of argon and helium protective gas is continuously introduced. Step 6, Temperature control component installation: Assemble the temperature sensor, control circuit board and circular heating plate (3) and complete the electrical connection; Step 7, Vacuum test and finished product inspection: Test the vacuum degree of the cup body, the sealing performance of the weld, the temperature control component (4), and the performance of the auxiliary sealing component (6).

9. The manufacturing process of a small-diameter electrically heated titanium thermos cup according to claim 8, characterized in that, After the circular heating plate (3) in step five is welded, the auxiliary sealing component (6) and the mounting annular groove (30) are assembled. The mixed protective gas is used to reduce the temperature in the welding area.

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