Manufacturing process of arc-bottom titanium cup

Abstract

The present invention discloses a manufacturing process of an arc-shaped bottom titanium cup, comprising the following preparation steps: S1: pressing an inner support ring; S2: primary crystallization; S3: matching; S4: welding; S5: pressing a titanium cup vacuum bottom; S6: welding a titanium cup vacuum bottom; S7: secondary crystallization; S8: vacuuming; S9: detecting the heat preservation function; S10: welding a bottom film; S11: surface polishing; S12: oxidation treatment. The present invention has the following significant beneficial effects: the present invention adopts an inner support ring structure, the inner support ring always rounds the vacuum bottom of the titanium cup and maintains a high roundness, ensuring that the surface of the welding part of the titanium cup shell and the vacuum bottom of the titanium cup is flat; the present invention adopts a mold to clamp the arc-shaped bottom titanium cup, which can accurately limit the arc-shaped bottom titanium cup, and the injection of argon can form an argon protective atmosphere at the welding part to reduce the generation of an oxide film; the bottom of the arc-shaped bottom titanium cup of the present invention is provided with a titanium cup bottom film, which can not only prevent the titanium cup bottom film from falling off, but also ensure that no medicine will remain in the vacuum bottom of the titanium cup.

Description

Technical Field

[0001] The invention relates to a manufacturing process of a vacuum cup, in particular to a manufacturing process of a titanium cup with an arc-shaped bottom. Background Art

[0002] Titanium vacuum cups have excellent corrosion resistance, antibacterial properties, and heat preservation properties, and are therefore deeply loved by consumers. However, in the existing titanium cup manufacturing process, the crystallization or processing and molding process is prone to out-of-round problems. The larger the arc of the vacuum bottom, the more significant the out-of-round problem is. In addition, the welding process is prone to offset and misalignment, and severe oxidation at the weld, which further affects the welding accuracy between the cup body and the vacuum bottom, and ultimately affects the consistency and flatness of the titanium cup's appearance. Summary of the invention

[0003] The invention aims at the defects in the prior art that the large arc vacuum bottom is easy to lose roundness, the welding is easy to deviate and misalign, the welding part is easy to oxidize, etc., and provides a new manufacturing process for an arc-bottom titanium cup.

[0004] In order to solve the above technical problems, the present invention is implemented by the following technical solutions:

[0005] A manufacturing process of a curved bottom titanium cup includes the following preparation steps:

[0006] S1: Pressing the inner support ring: taking the inner support ring and the pre-treated titanium cup shell, gradually pressing the inner support ring into the titanium cup shell from the bottom end, forming an interference fit between the inner support ring and the titanium cup shell, and setting a part of the inner support ring to remain outside the bottom end of the titanium cup shell;

[0007] S2: primary crystallization: the outer shell of the titanium cup and the inner support ring are crystallized in a vacuum furnace A, the vacuum degree in the vacuum furnace A is adjusted to less than 0.001 Pa, the temperature is set to 1100-1200°C and the heating is continued for 3-10 hours, so that the outer shell of the titanium cup and the inner support ring are adhered together;

[0008] S3: Matching: taking the pre-treated titanium cup liner and the titanium cup shell treated in step S2 and performing matching treatment, so that a uniform vacuum layer gap is formed between the titanium cup liner and the titanium cup shell;

[0009] S4: Welding: Use a continuous automatic laser welding device with a gas protection function to weld the mouth of the titanium cup liner and the mouth of the titanium cup shell, the welding power is 200-1500W, the speed is 1-30 rpm, and the welding time is 1-50S to obtain the titanium cup body;

[0010] S5: Pressing the titanium cup vacuum bottom: taking the pre-treated titanium cup vacuum bottom with an arc-shaped bottom edge and a step groove and the titanium cup body obtained in step S4, pressing the titanium cup vacuum bottom along the outer side surface of the inner support ring, and performing a pressing process, so that the end surface of the titanium cup vacuum bottom is flatly fitted with the end surface of the bottom of the titanium cup body;

[0011] S6: welding the titanium cup vacuum bottom: the titanium cup body and the titanium cup vacuum bottom processed in step S5 are placed horizontally, and are welded by automatic laser welding equipment with gas protection function. Under the action of welding laser, the titanium metal at the joint between the titanium cup body and the titanium cup vacuum bottom is melted and adhered to the inner support ring, so that the titanium cup vacuum bottom is completely welded with the titanium cup body, and an arc-bottom titanium cup is obtained;

[0012] S7: Secondary crystallization: The arc-bottom titanium cup is subjected to secondary crystallization in a vacuum furnace B, the vacuum degree in the vacuum furnace B is adjusted to less than 0.001 Pa, the temperature is set to 1100-1200° C. and maintained for 3-10 hours;

[0013] S8: Vacuuming: placing the arc-bottom titanium cup in an environment of 800-1000° C. for vacuuming and maintaining the vacuuming treatment for 3-10 hours;

[0014] S9: Detecting the heat preservation function: Invert the arc-bottom titanium cup after vacuum treatment at the hot air outlet of the temperature measuring machine, blow hot air of 150-260°C into the inner liner of the arc-bottom titanium cup for 35-50s, and detect the temperature of the outer side of the arc-bottom titanium cup after the blowing is completed. If the detected temperature value is 20-25°C, it is judged that the heat preservation performance of the arc-bottom titanium cup is qualified;

[0015] S10: Welding the bottom film: Take the pre-treated titanium cup bottom film and the arc-bottom titanium cup, place the mouth of the arc-bottom titanium cup into the lower mold connected to the cylinder for positioning, place the titanium cup bottom film into the step groove at the bottom of the arc-bottom titanium cup and press it through the upper mold, and inject argon gas into the gas volume cavity set in the upper mold to separate the welding point from the air, and use automated pulse laser welding equipment for welding. The rotation drive assembly of the upper mold drives the upper mold to rotate 370°, and the upper mold drives the arc-bottom titanium cup to rotate 370°, so that the titanium cup bottom film and the step groove are completely welded;

[0016] S11: surface polishing: fix the arc-bottom titanium cup, and grind the surface of the arc-bottom titanium cup with a high-speed rotating cloth wheel, the rotation speed is set to 1000-4000 rpm, and the polishing time is set to 3-100 min;

[0017] S12: oxidation treatment: anodizing the arc-bottom titanium cup by anodizing process to obtain an arc-bottom titanium cup.

[0018] In step S1, a portion of the inner support ring is pressed into the bottom end of the titanium cup shell to form an interference fit, so that the inner support ring and the titanium cup shell are fixed by friction. The inner support ring can always support the titanium cup shell, so that the titanium cup shell maintains a high roundness.

[0019] In step S2, when the titanium cup shell and the inner support ring are crystallized once, not only the outer surface of the titanium cup shell forms an excellent crystallization effect, but also the inner support ring and the titanium cup shell are tightly bonded together because titanium metal is easy to diffuse in a vacuum environment of 1100-1200°C.

[0020] In step S3, the titanium cup liner and the titanium cup shell are matched to obtain a side vacuum layer gap with uniform thickness.

[0021] In step S4, continuous automatic laser welding equipment with gas protection function is used to process the weld, which can avoid oxidation at the weld and avoid deviation during the welding process, thereby ensuring the uniformity of the gap of the side vacuum layer.

[0022] In step S5, the vacuum bottom of the titanium cup is pressed to the specified position along the side of the inner support ring. The inner support ring supports the edge of the vacuum bottom of the titanium cup, so that the vacuum bottom of the titanium cup maintains a high roundness, which is conducive to the smooth fit between the edge of the vacuum bottom of the titanium cup and the end face of the bottom of the titanium cup body, thereby meeting high-precision welding requirements.

[0023] In step S6, the titanium cup body and the titanium cup vacuum bottom are placed horizontally, and the welding laser is shot into the joint from top to bottom. After the titanium metal material melts, it flows vertically downward, so that it can be evenly filled in the joint, and it is not easy to have problems such as weld breakage. The automatic laser welding equipment with gas protection function can form an argon protection atmosphere at the welding point, reduce the formation of oxide film, and thus produce a uniform, full and beautiful appearance of the welding point.

[0024] In step S7, the arc-bottom titanium cup is subjected to secondary crystallization, so as to remove oxide films of different thicknesses on the surface of the arc-bottom titanium cup.

[0025] In step S8, the arc-bottom titanium cup is evacuated in a high temperature environment of 800-1000°C to obtain a high vacuum degree.

[0026] In step S9, the arc-bottom titanium cup that has been vacuumed is tested for heat preservation function, and the arc-bottom titanium cup that meets the heat preservation requirement is then subjected to subsequent processing to improve the qualified rate of the arc-bottom titanium cup.

[0027] In step S10, the welding bottom film can cover the step groove of the arc-shaped bottom titanium cup, making the appearance more beautiful. Pulse laser welding is used instead of glue, and there is no risk of falling off.

[0028] In step S11, the surface of the arc-bottom titanium cup is polished to enhance the flatness of the shape and further enhance the effect of the subsequent oxidation treatment.

[0029] In step S12, the arc-bottom titanium cup is oxidized to finally obtain an arc-bottom titanium cup with a smooth and consistent appearance. The arc-bottom titanium cup is sealed by welding the titanium cup bottom film, which can avoid the problem of residual medicine and inability to clean during oxidation treatment. After oxidation, the color of the surface of the arc-bottom titanium cup is uniform.

[0030] Preferably, in the manufacturing process of the arc-bottom titanium cup described above, the inner support ring is made of titanium metal with a thickness of 1.0-3.0 mm.

[0031] The inner support ring supports the titanium cup outer shell and the titanium cup vacuum bottom, and plays a guiding role in the matching process of the titanium cup outer shell and the titanium cup vacuum bottom. The inner support ring with a thickness of 1-3mm can not only ensure its own strength, but also is not easy to deform during the crystallization process.

[0032] Preferably, in the manufacturing process of the arc-bottom titanium cup described above, the pretreatment of the titanium cup shell in step S1 comprises the following steps:

[0033] A1: Take a titanium tube with a diameter of 35-150mm, and after the processes of cutting, swelling, cup division, necking, cutting head, necking, bottoming, thread rolling, flat mouth, flat bottom, and mouth pressing, the titanium cup shell is obtained after the molding is completed;

[0034] A2: The titanium cup shell is placed in an alkaline degreasing solution for cleaning for 5-30 minutes. After cleaning, it is placed in a 90-120° C. oven for drying, and then the surface is polished with a sand belt and a fiber wheel to obtain a titanium cup shell with a smooth surface.

[0035] The titanium cup shell obtained through the above process can meet the requirements of dimensional accuracy and appearance consistency, which is helpful to finally obtain a titanium cup with a curved bottom that has a smooth and consistent appearance.

[0036] Preferably, in the manufacturing process of the arc-bottom titanium cup described above, the pretreatment of the titanium cup liner in step S3 comprises the following steps:

[0037] B1: Pick out concave points: Take the titanium cup inner liner cup, make the sight line 45 degrees with the titanium cup inner liner cup under the fluorescent lamp and rotate the mouth of the titanium cup inner liner cup more than 360 degrees to check whether there are concave points on the outer surface of the titanium cup inner liner cup; make the sight line 30 degrees with the titanium cup inner liner cup under the fluorescent lamp and rotate the outer diameter of the titanium cup inner liner cup more than 360 degrees to check whether there are concave points on the inner side of the titanium cup inner liner cup. If there are no concave points on the outer surface and inner side of the titanium cup inner liner cup, start welding the inner liner bottom;

[0038] B2: Welding the bottom of the inner liner: Use continuous automatic laser welding equipment with gas protection function to weld the titanium cup inner liner cup and the inner liner bottom. The welding power is 200-1500W, the rotation speed is 1-30 rpm, and the welding time is 1-50S. After welding is completed, the titanium cup inner liner is obtained.

[0039] The titanium cup liner obtained through the above process can remove unqualified titanium cup liner cups in advance and improve the quality of the titanium cup liner. The continuous automatic laser welding equipment with gas protection function is used for welding, so that the welding point between the titanium cup liner cup and the liner bottom is uniform and flat, avoiding oxidation during welding.

[0040] Preferably, in the manufacturing process of the arc-bottom titanium cup described above, the pretreatment of the vacuum bottom of the titanium cup in step S5 comprises the following steps:

[0041] C1: placing the vacuum bottom of the titanium cup in an alkaline degreasing solution for cleaning for 5-30 minutes, and then placing it in a 90-120° C. oven for drying after cleaning;

[0042] C2: A zirconium-based high-temperature getter is used and fixed to the inner side of the vacuum bottom of the titanium cup by spot welding.

[0043] The titanium cup vacuum bottom obtained through the above process can obtain a titanium cup vacuum bottom with a clean surface. The zirconium-based high-temperature getter has the function of absorbing gas and maintaining vacuum. The zirconium-based high-temperature getter is fixed to the inner side of the bottom of the titanium cup vacuum bottom by spot welding to avoid the welding marks left by spot welding from being exposed to the outside.

[0044] Preferably, in the manufacturing process of the arc-bottom titanium cup described above, the pretreatment of the titanium cup bottom sheet in step S10 comprises the following steps:

[0045] D1: placing the titanium cup bottom film in an alkaline degreasing solution and washing for 5-30 minutes, and then drying in a 90-120° C. oven after washing;

[0046] D2: The titanium cup bottom film is crystallized in a vacuum furnace C. The vacuum degree in the vacuum furnace C is adjusted to less than 0.001 Pa, and the temperature is set to 1100-1200° C. and maintained for 3-10 hours.

[0047] After the titanium cup bottom film is cleaned, it is crystallized again to make the titanium cup bottom film and the titanium cup shell have the same appearance.

[0048] Preferably, in the manufacturing process of the arc-bottom titanium cup described above, the lower mold in step S10 includes a lower mold sleeve, a first bearing, and a lower mold shaft, the lower mold sleeve cooperates with the mouth of the arc-bottom titanium cup, one end of the lower mold shaft is rotatably connected to the lower mold sleeve through the first bearing, and the other end of the lower mold shaft is connected to the cylinder.

[0049] The lower die sleeve cooperates with the mouth of the arc-bottom titanium cup, and the lower die shaft is connected to the cylinder so that the cylinder can push the lower die sleeve and the arc-bottom titanium cup to move upward together. When the lower die sleeve and the arc-bottom titanium cup rotate, the lower die shaft can play a supporting role.

[0050] Preferably, in the manufacturing process of the arc-bottom titanium cup described above, the upper mold in step S10 includes a positioning sleeve, a movable rod assembly, a gas protection cover, and a second bearing. The positioning sleeve is rotatably connected to the gas protection cover via the second bearing, the positioning sleeve cooperates with the bottom of the arc-bottom titanium cup, the movable rod assembly is slidably connected to the gas protection cover, the movable rod assembly is in conflict with the bottom plate of the titanium cup, and the gas chamber is formed between the positioning sleeve and the gas protection cover.

[0051] The positioning sleeve cooperates with the bottom of the arc-bottom titanium cup to accurately limit the arc-bottom titanium cup. The movable rod assembly can further compress the titanium cup bottom film of the arc-bottom titanium cup to prevent the titanium cup bottom film from shifting during welding rotation. Argon gas can sink to the welding position at the bottom of the gas chamber, thereby protecting the welding part and preventing the metal cup from oxidation during welding.

[0052] Preferably, in the manufacturing process of the arc-bottom titanium cup described above, a first step and a second step are provided on the step groove in step S5, a reinforcing rib is provided between the first step and the second step, and in step S10, the titanium cup bottom plate is completely welded to the first step, and a zirconium-based high-temperature getter is welded to the inner side of the second step.

[0053] The first step can fix the bottom of the titanium cup so that it does not shake, and the bottom of the titanium cup and the first step are tightly matched at the welding point to meet the welding requirements. The second step and the reinforcing ribs can increase the strength of the vacuum bottom of the titanium cup and better solve the problem of crystallization and deformation of the vacuum bottom of the titanium cup after vacuuming.

[0054] Preferably, in the manufacturing process of the arc-bottom titanium cup described above, the upper mold also includes an air inlet pipe assembly, the gas protection cover is provided with a light inlet hole, the position of the light inlet hole corresponds to the position of the automated pulse laser welding equipment, and the air inlet pipe assembly is inserted into the gas protection cover.

[0055] The laser emitted by the automated pulse laser welding equipment passes through the corresponding light inlet hole to weld the bottom of the metal cup. The light inlet hole also serves to exhaust air. The air inlet pipe assembly can inject argon into the gas cavity, so that the air in the gas cavity is discharged from the light inlet hole, effectively preventing oxidation at the weld.

[0056] The present invention has the following significant beneficial effects:

[0057] 1. The present invention adopts an inner support ring structure, which can ensure that the outer shell of the titanium cup and the vacuum bottom of the titanium cup have excellent appearance after secondary crystallization without causing a large degree of roundness deformation. The inner support ring always supports the vacuum bottom of the titanium cup and maintains a high roundness. The inner support ring can adhere the outer shell of the titanium cup and the vacuum bottom of the titanium cup together and completely weld them, ensuring that the surface of the welding point between the outer shell of the titanium cup and the vacuum bottom of the titanium cup is flat and smooth;

[0058] 2. During the welding process, the present invention uses the above-mentioned mold to clamp the arc-bottom titanium cup, which can accurately limit the arc-bottom titanium cup. The movable rod assembly can further press the titanium cup bottom sheet at the bottom of the arc-bottom titanium cup to prevent the titanium cup bottom sheet from shifting during welding. Injecting argon gas into the gas chamber can form an argon protective atmosphere at the welding point, reduce the formation of oxide film, and finally obtain a uniform, full and beautiful appearance of the welding point;

[0059] 3. The bottom of the arc-shaped titanium cup of the present invention is provided with a titanium cup bottom sheet, and the titanium cup bottom sheet is welded and sealed with the titanium cup vacuum bottom by laser welding, which can not only prevent the titanium cup bottom sheet from falling off, but also ensure that no liquid medicine will remain in the vacuum bottom of the titanium cup in the final anodizing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 It is a schematic diagram of the structure of the arc-bottom titanium cup in the present invention;

[0061] Figure 2 It is a structural schematic diagram of the titanium cup bottom plate and the arc-bottom titanium cup when they are welded in the present invention;

[0062] Figure 3 It is a schematic diagram of the local structure when the titanium cup bottom plate and the arc-bottom titanium cup are welded in the present invention;

[0063] Figure 4 It is a schematic structural diagram of the vacuum bottom of the titanium cup of the present invention. DETAILED DESCRIPTION

[0064] The following is combined with Figure 1-4 The present invention is further described in detail with specific embodiments, but they are not intended to limit the present invention:

[0065] Example 1

[0066] A manufacturing process of a curved bottom titanium cup includes the following preparation steps:

[0067] S1: Pressing the inner support ring 3: Take the inner support ring 3 and the pre-treated titanium cup shell 1, and gradually press the inner support ring 3 into the titanium cup shell 1 from the bottom end, so that an interference fit is formed between the inner support ring 3 and the titanium cup shell 1, and a part of the inner support ring 3 is set to remain outside the bottom end of the titanium cup shell 1;

[0068] S2: primary crystallization: the titanium cup shell 1 and the inner support ring 3 are subjected to primary crystallization in a vacuum furnace A, the vacuum degree in the vacuum furnace A is adjusted to less than 0.001 Pa, the temperature is set to 1100° C. and the heating is continued for 3 hours, so that the titanium cup shell 1 and the inner support ring 3 are adhered together;

[0069] S3: Matching: Take the pre-treated titanium cup liner 2 and the titanium cup shell 1 treated in step S2 and perform matching treatment so that a uniform vacuum layer gap is formed between the titanium cup liner 2 and the titanium cup shell 1;

[0070] S4: welding: using a continuous automatic laser welding device with a gas protection function to weld the mouth of the titanium cup liner 2 and the mouth of the titanium cup shell 1, the welding power is 200W, the speed is 1 rpm, and the welding time is 1S, to obtain the titanium cup body;

[0071] S5: Pressing the titanium cup vacuum bottom 4: Take the pre-treated titanium cup vacuum bottom 4 with an arc-shaped bottom edge and a step groove 41 and the titanium cup body obtained in step S4, press the titanium cup vacuum bottom 4 along the outer side surface of the inner support ring 3, and perform a pressing process so that the end surface of the titanium cup vacuum bottom 4 is flatly fitted with the end surface of the bottom of the titanium cup body;

[0072] S6: welding the titanium cup vacuum bottom 4: the titanium cup body and the titanium cup vacuum bottom 4 processed in step S5 are placed horizontally, and are welded by automatic laser welding equipment with gas protection function. Under the action of the welding laser, the titanium metal at the joint of the titanium cup body and the titanium cup vacuum bottom 4 is melted and adhered to the inner support ring 3, so that the titanium cup vacuum bottom 4 is completely welded with the titanium cup body, and an arc-bottom titanium cup 8 is obtained;

[0073] S7: Secondary crystallization: The arc-bottom titanium cup 8 is subjected to secondary crystallization in a vacuum furnace B, the vacuum degree in the vacuum furnace B is adjusted to less than 0.001 Pa, the temperature is set to 1100° C. and maintained for 3 hours;

[0074] S8: Vacuuming: placing the arc-bottom titanium cup 8 in an environment of 800° C. for vacuuming and maintaining the vacuuming treatment for 3 hours;

[0075] S9: Detecting the heat preservation function: Invert the arc-bottom titanium cup 8 after vacuum treatment at the hot air outlet of the temperature measuring machine, blow hot air at 150°C into the inner liner of the arc-bottom titanium cup 8 for 35 seconds, and detect the temperature of the outer side of the arc-bottom titanium cup 8 after the blowing is completed. If the detected temperature value is 20-25°C, it is judged that the heat preservation performance of the arc-bottom titanium cup 8 is qualified;

[0076] S10: Welding the bottom film: Take the pre-treated titanium cup bottom film 5 and the arc-bottom titanium cup 8, put the mouth of the arc-bottom titanium cup 8 into the lower mold 7 connected to the cylinder 74 for positioning, put the titanium cup bottom film 5 into the step groove 41 at the bottom of the arc-bottom titanium cup 8 and press it through the upper mold 6, and at the same time inject argon gas into the gas chamber 61 set in the upper mold 6 to separate the welding point from the air, and use the automatic pulse laser welding equipment 9 for welding, the rotation drive assembly 10 of the upper mold 6 drives the upper mold 6 to rotate 370°, and at the same time the upper mold 6 drives the arc-bottom titanium cup 8 to rotate 370°, so that the titanium cup bottom film 5 and the step groove 41 are completely welded;

[0077] S11: surface polishing: fix the arc-bottom titanium cup 8, and grind the surface of the arc-bottom titanium cup 8 with a high-speed rotating cloth wheel, the rotation speed is set to 1000 rpm, and the polishing time is set to 3 min;

[0078] S12: oxidation treatment: the arc-bottom titanium cup 8 is subjected to oxidation treatment by adopting an anodic oxidation process, and finally a arc-bottom titanium cup is obtained.

[0079] Preferably, the inner support ring 3 is made of titanium metal with a thickness of 1.0 mm.

[0080] Preferably, the pretreatment of the titanium cup shell 1 in step S1 comprises the following steps:

[0081] A1: A titanium tube with a diameter of 35 mm is taken, and the titanium cup shell 1 is obtained after the steps of tube cutting, water swelling, cup division, mouth shrinking, head cutting, mouth shaping, bottom shaping, thread rolling, flat mouth, flat bottom and mouth pressing are completed;

[0082] A2: The titanium cup shell 1 is placed in an alkaline degreasing solution for cleaning for 5 minutes. After cleaning, it is placed in a 90° C. oven for drying, and then the surface is polished with a sand belt and a fiber wheel to obtain a titanium cup shell 1 with a smooth surface.

[0083] Preferably, the pretreatment of the titanium cup liner 2 in step S3 comprises the following steps:

[0084] B1: Select concave points: Take the titanium cup liner cup 21, make the sight line 45 degrees with the titanium cup liner cup 21 under the fluorescent lamp and rotate the mouth of the titanium cup liner cup 21 more than 360 degrees to check whether there are concave points on the outer surface of the titanium cup liner cup 21; make the sight line 30 degrees with the titanium cup liner cup 21 under the fluorescent lamp and rotate the outer diameter of the titanium cup liner cup 21 more than 360 degrees to check whether there are concave points on the inner side of the titanium cup liner cup 21. If there are no concave points on the outer surface and inner side of the titanium cup liner cup 21, start welding the inner liner bottom 22;

[0085] B2: Welding the inner liner bottom 22: Use continuous automatic laser welding equipment with gas protection function to weld the titanium cup inner liner cup 21 and the inner liner bottom 22. The welding power is 200W, the rotation speed is 1 rpm, and the welding time is 1S. After welding is completed, the titanium cup inner liner 2 is obtained.

[0086] Preferably, the pretreatment of the vacuum bottom 4 of the titanium cup in step S5 comprises the following steps:

[0087] C1: placing the titanium cup vacuum bottom 4 in an alkaline degreasing solution and cleaning it for 5 minutes, and then placing it in a 90° C. oven for drying after cleaning;

[0088] C2: Use a zirconium-based high-temperature getter 45 and fix the zirconium-based high-temperature getter 45 to the inner side of the bottom of the titanium cup vacuum bottom 4 by spot welding.

[0089] Preferably, the pretreatment of the titanium cup bottom sheet 5 in step S10 comprises the following steps:

[0090] D1: placing the titanium cup bottom sheet 5 in an alkaline degreasing solution and washing for 5 minutes, and then placing it in a 90° C. oven for drying after washing;

[0091] D2: The titanium cup bottom sheet 5 is crystallized in a vacuum furnace C. The vacuum degree in the vacuum furnace C is adjusted to less than 0.001 Pa, and the temperature is set to 1100° C. and maintained for 3 hours.

[0092] Preferably, the lower die 7 in step S10 includes a lower die sleeve 71, a first bearing 72, and a lower die shaft 73. The lower die sleeve 71 cooperates with the mouth of the arc-shaped bottom titanium cup 8. One end of the lower die shaft 73 is rotatably connected to the lower die sleeve 71 through the first bearing 72, and the other end of the lower die shaft 73 is connected to the cylinder 74.

[0093] Preferably, in step S10, the upper mold 6 includes a positioning sleeve 62, a movable rod assembly 63, a gas protection cover 64, and a second bearing 66. The positioning sleeve 62 and the gas protection cover 64 are rotatably connected via the second bearing 66. The positioning sleeve 62 cooperates with the bottom of the arc-shaped bottom titanium cup 8. The movable rod assembly 63 and the gas protection cover 64 are slidably connected. The movable rod assembly 63 is in conflict with the titanium cup bottom film 5. The gas chamber 61 is formed between the positioning sleeve 62 and the gas protection cover 64.

[0094] Preferably, in step S5, a first step 42 and a second step 43 are provided on the step groove 41, a reinforcing rib 44 is provided between the first step 42 and the second step 43, and in step S10, the titanium cup bottom plate 5 is completely welded to the first step 42, and a zirconium-based high-temperature getter 45 is welded to the inner side of the second step 43.

[0095] Preferably, the upper mold 6 also includes an air inlet pipe assembly 65 , and the gas protection cover 64 is provided with a light inlet hole 641 , the position of the light inlet hole 641 corresponds to the position of the automated pulse laser welding equipment 9 , and the air inlet pipe assembly 65 is inserted into the gas protection cover 64 .

[0096] Example 2

[0097] A manufacturing process of a curved bottom titanium cup includes the following preparation steps:

[0098] S1: Pressing the inner support ring 3: Take the inner support ring 3 and the pre-treated titanium cup shell 1, and gradually press the inner support ring 3 into the titanium cup shell 1 from the bottom end, so that an interference fit is formed between the inner support ring 3 and the titanium cup shell 1, and a part of the inner support ring 3 is set to remain outside the bottom end of the titanium cup shell 1;

[0099] S2: primary crystallization: the titanium cup shell 1 and the inner support ring 3 are subjected to primary crystallization in a vacuum furnace A, the vacuum degree in the vacuum furnace A is adjusted to less than 0.001 Pa, the temperature is set to 1200° C. and the heating is continued for 10 hours, so that the titanium cup shell 1 and the inner support ring 3 are adhered together;

[0100] S3: Matching: Take the pre-treated titanium cup liner 2 and the titanium cup shell 1 treated in step S2 and perform matching treatment so that a uniform vacuum layer gap is formed between the titanium cup liner 2 and the titanium cup shell 1;

[0101] S4: welding: using a continuous automatic laser welding device with a gas protection function to weld the mouth of the titanium cup liner 2 and the mouth of the titanium cup shell 1, the welding power is 1500W, the speed is 30 rpm, and the welding time is 50S, to obtain the titanium cup body;

[0102] S5: Pressing the titanium cup vacuum bottom 4: Take the pre-treated titanium cup vacuum bottom 4 with an arc-shaped bottom edge and a step groove 41 and the titanium cup body obtained in step S4, press the titanium cup vacuum bottom 4 along the outer side surface of the inner support ring 3, and perform a pressing process so that the end surface of the titanium cup vacuum bottom 4 is flatly fitted with the end surface of the bottom of the titanium cup body;

[0103] S6: welding the titanium cup vacuum bottom 4: the titanium cup body and the titanium cup vacuum bottom 4 processed in step S5 are placed horizontally, and are welded by automatic laser welding equipment with gas protection function. Under the action of the welding laser, the titanium metal at the joint of the titanium cup body and the titanium cup vacuum bottom 4 is melted and adhered to the inner support ring 3, so that the titanium cup vacuum bottom 4 is completely welded with the titanium cup body, and an arc-bottom titanium cup 8 is obtained;

[0104] S7: Secondary crystallization: The arc-bottom titanium cup 8 is subjected to secondary crystallization in a vacuum furnace B, the vacuum degree in the vacuum furnace B is adjusted to less than 0.001 Pa, the temperature is set to 1200° C. and maintained for 10 hours;

[0105] S8: Vacuuming: placing the arc-bottom titanium cup 8 in an environment of 1000° C. for vacuuming and maintaining the vacuuming treatment for 10 hours;

[0106] S9: Detecting the heat preservation function: Invert the arc-bottom titanium cup 8 after vacuum treatment at the hot air outlet of the temperature measuring machine, blow hot air at 260°C into the inner liner of the arc-bottom titanium cup 8 for 50 seconds, and detect the temperature of the outer side of the arc-bottom titanium cup 8 after the blowing is completed. If the detected temperature value is 20-25°C, it is judged that the heat preservation performance of the arc-bottom titanium cup 8 is qualified;

[0107] S10: Welding the bottom film: Take the pre-treated titanium cup bottom film 5 and the arc-bottom titanium cup 8, put the mouth of the arc-bottom titanium cup 8 into the lower mold 7 connected to the cylinder 74 for positioning, put the titanium cup bottom film 5 into the step groove 41 at the bottom of the arc-bottom titanium cup 8 and press it through the upper mold 6, and at the same time inject argon gas into the gas chamber 61 set in the upper mold 6 to separate the welding point from the air, and use the automatic pulse laser welding equipment 9 for welding, the rotation drive assembly 10 of the upper mold 6 drives the upper mold 6 to rotate 370°, and at the same time the upper mold 6 drives the arc-bottom titanium cup 8 to rotate 370°, so that the titanium cup bottom film 5 and the step groove 41 are completely welded;

[0108] S11: surface polishing: fix the arc-bottom titanium cup 8, and grind the surface of the arc-bottom titanium cup 8 with a high-speed rotating cloth wheel, the rotation speed is set to 4000 rpm, and the polishing time is set to 100 min;

[0109] S12: oxidation treatment: the arc-bottom titanium cup 8 is subjected to oxidation treatment by adopting an anodic oxidation process, and finally a arc-bottom titanium cup is obtained.

[0110] Preferably, the inner support ring 3 is made of titanium metal with a thickness of 3.0 mm.

[0111] Preferably, the pretreatment of the titanium cup shell 1 in step S1 comprises the following steps:

[0112] A1: A titanium tube with a diameter of 150 mm is taken, and after the processes of tube cutting, water swelling, cup division, mouth shrinking, head cutting, mouth shaping, bottom shaping, thread rolling, flat mouth, flat bottom, and mouth pressing, the titanium cup shell 1 is obtained after the forming is completed;

[0113] A2: The titanium cup shell 1 is placed in an alkaline degreasing solution for cleaning for 30 minutes. After cleaning, it is placed in a 120° C. oven for drying, and then the surface is polished with a sand belt and a fiber wheel to obtain a titanium cup shell 1 with a smooth surface.

[0114] Preferably, the pretreatment of the titanium cup liner 2 in step S3 comprises the following steps:

[0115] B1: Select concave points: Take the titanium cup liner cup 21, make the sight line 45 degrees with the titanium cup liner cup 21 under the fluorescent lamp and rotate the mouth of the titanium cup liner cup 21 more than 360 degrees to check whether there are concave points on the outer surface of the titanium cup liner cup 21; make the sight line 30 degrees with the titanium cup liner cup 21 under the fluorescent lamp and rotate the outer diameter of the titanium cup liner cup 21 more than 360 degrees to check whether there are concave points on the inner side of the titanium cup liner cup 21. If there are no concave points on the outer surface and inner side of the titanium cup liner cup 21, start welding the inner liner bottom 22;

[0116] B2: Welding the inner liner bottom 22: Use continuous automatic laser welding equipment with gas protection function to weld the titanium cup inner liner cup 21 and the inner liner bottom 22. The welding power is 1500W, the rotation speed is 30 rpm, and the welding time is 50S. After welding is completed, the titanium cup inner liner 2 is obtained.

[0117] Preferably, the pretreatment of the vacuum bottom 4 of the titanium cup in step S5 comprises the following steps:

[0118] C1: placing the titanium cup vacuum bottom 4 in an alkaline degreasing solution and cleaning it for 30 minutes, and then placing it in a 120° C. oven for drying after cleaning;

[0119] C2: A zirconium-based high-temperature getter 45 is used and fixed to the inner side of the bottom of the titanium cup vacuum bottom 4 by spot welding.

[0120] Preferably, the pretreatment of the titanium cup bottom sheet 5 in step S10 comprises the following steps:

[0121] D1: placing the titanium cup bottom sheet 5 in an alkaline degreasing solution and washing for 30 minutes, and then placing it in a 120° C. oven for drying after washing;

[0122] D2: The titanium cup bottom sheet 5 is crystallized in a vacuum furnace C. The vacuum degree in the vacuum furnace C is adjusted to less than 0.001 Pa, and the temperature is set to 1200° C. and maintained for 10 hours.

[0123] Preferably, the lower die 7 in step S10 includes a lower die sleeve 71, a first bearing 72, and a lower die shaft 73. The lower die sleeve 71 cooperates with the mouth of the arc-shaped bottom titanium cup 8. One end of the lower die shaft 73 is rotatably connected to the lower die sleeve 71 through the first bearing 72, and the other end of the lower die shaft 73 is connected to the cylinder 74.

[0124] Preferably, in step S10, the upper mold 6 includes a positioning sleeve 62, a movable rod assembly 63, a gas protection cover 64, and a second bearing 66. The positioning sleeve 62 and the gas protection cover 64 are rotatably connected via the second bearing 66. The positioning sleeve 62 cooperates with the bottom of the arc-shaped bottom titanium cup 8. The movable rod assembly 63 and the gas protection cover 64 are slidably connected. The movable rod assembly 63 is in conflict with the titanium cup bottom film 5. The gas chamber 61 is formed between the positioning sleeve 62 and the gas protection cover 64.

[0125] Preferably, in step S5, a first step 42 and a second step 43 are provided on the step groove 41, a reinforcing rib 44 is provided between the first step 42 and the second step 43, and in step S10, the titanium cup bottom plate 5 is completely welded to the first step 42, and a zirconium-based high-temperature getter 45 is welded to the inner side of the second step 43.

[0126] Preferably, the upper mold 6 also includes an air inlet pipe assembly 65 , and the gas protection cover 64 is provided with a light inlet hole 641 , the position of the light inlet hole 641 corresponds to the position of the automated pulse laser welding equipment 9 , and the air inlet pipe assembly 65 is inserted into the gas protection cover 64 .

[0127] Example 3

[0128] A manufacturing process of a curved bottom titanium cup includes the following preparation steps:

[0129] S1: Pressing the inner support ring 3: Take the inner support ring 3 and the pre-treated titanium cup shell 1, and gradually press the inner support ring 3 into the titanium cup shell 1 from the bottom end, so that an interference fit is formed between the inner support ring 3 and the titanium cup shell 1, and a part of the inner support ring 3 is set to remain outside the bottom end of the titanium cup shell 1;

[0130] S2: primary crystallization: the titanium cup shell 1 and the inner support ring 3 are subjected to primary crystallization in a vacuum furnace A, the vacuum degree in the vacuum furnace A is adjusted to less than 0.001 Pa, the temperature is set to 1150° C. and the heating is continued for 7 hours, so that the titanium cup shell 1 and the inner support ring 3 are adhered together;

[0131] S3: Matching: Take the pre-treated titanium cup liner 2 and the titanium cup shell 1 treated in step S2 and perform matching treatment so that a uniform vacuum layer gap is formed between the titanium cup liner 2 and the titanium cup shell 1;

[0132] S4: Welding: Use a continuous automatic laser welding device with a gas protection function to weld the mouth of the titanium cup liner 2 and the mouth of the titanium cup shell 1, the welding power is 850W, the speed is 15 rpm, and the welding time is 25S to obtain the titanium cup body;

[0133] S5: Pressing the titanium cup vacuum bottom 4: Take the pre-treated titanium cup vacuum bottom 4 with an arc-shaped bottom edge and a step groove 41 and the titanium cup body obtained in step S4, press the titanium cup vacuum bottom 4 along the outer side surface of the inner support ring 3, and perform a pressing process so that the end surface of the titanium cup vacuum bottom 4 is flatly fitted with the end surface of the bottom of the titanium cup body;

[0134] S6: welding the titanium cup vacuum bottom 4: the titanium cup body and the titanium cup vacuum bottom 4 processed in step S5 are placed horizontally, and are welded by automatic laser welding equipment with gas protection function. Under the action of the welding laser, the titanium metal at the joint of the titanium cup body and the titanium cup vacuum bottom 4 is melted and adhered to the inner support ring 3, so that the titanium cup vacuum bottom 4 is completely welded with the titanium cup body, and an arc-bottom titanium cup 8 is obtained;

[0135] S7: Secondary crystallization: The arc-bottom titanium cup 8 is subjected to secondary crystallization in a vacuum furnace B, the vacuum degree in the vacuum furnace B is adjusted to less than 0.001 Pa, the temperature is set to 1150° C. and maintained for 7 hours;

[0136] S8: Vacuuming: placing the arc-bottom titanium cup 8 in an environment of 900° C. for vacuuming and maintaining the vacuuming treatment for 7 hours;

[0137] S9: Detecting the heat preservation function: Invert the arc-bottom titanium cup 8 after vacuum treatment at the hot air outlet of the temperature measuring machine, blow 200°C hot air into the inner liner of the arc-bottom titanium cup 8 for 40 seconds, and detect the temperature of the outer side of the arc-bottom titanium cup 8 after the blowing is completed. If the detected temperature value is 20-25°C, it is judged that the heat preservation performance of the arc-bottom titanium cup 8 is qualified;

[0138] S10: Welding the bottom film: Take the pre-treated titanium cup bottom film 5 and the arc-bottom titanium cup 8, put the mouth of the arc-bottom titanium cup 8 into the lower mold 7 connected to the cylinder 74 for positioning, put the titanium cup bottom film 5 into the step groove 41 at the bottom of the arc-bottom titanium cup 8 and press it through the upper mold 6, and at the same time inject argon gas into the gas chamber 61 set in the upper mold 6 to separate the welding point from the air, and use the automatic pulse laser welding equipment 9 for welding, the rotation drive assembly 10 of the upper mold 6 drives the upper mold 6 to rotate 370°, and at the same time the upper mold 6 drives the arc-bottom titanium cup 8 to rotate 370°, so that the titanium cup bottom film 5 and the step groove 41 are completely welded;

[0139] S11: surface polishing: fix the arc-bottom titanium cup 8, and grind the surface of the arc-bottom titanium cup 8 with a high-speed rotating cloth wheel, the rotation speed is set to 2500 rpm, and the polishing time is set to 50 min;

[0140] S12: oxidation treatment: the arc-bottom titanium cup 8 is subjected to oxidation treatment by adopting an anodic oxidation process, and finally a arc-bottom titanium cup is obtained.

[0141] Preferably, the inner support ring 3 is made of titanium metal with a thickness of 2.0 mm.

[0142] Preferably, the pretreatment of the titanium cup shell 1 in step S1 comprises the following steps:

[0143] A1: A titanium tube with a diameter of 90 mm is taken, and the titanium cup shell 1 is obtained after the steps of tube cutting, water swelling, cup division, mouth shrinking, head cutting, mouth shaping, bottom shaping, thread rolling, flat mouth, flat bottom and mouth pressing are completed;

[0144] A2: The titanium cup shell 1 is placed in an alkaline degreasing solution for cleaning for 18 minutes. After cleaning, it is placed in a 110° C. oven for drying, and then the surface is polished with a sand belt and a fiber wheel to obtain a titanium cup shell 1 with a smooth surface.

[0145] Preferably, the pretreatment of the titanium cup liner 2 in step S3 comprises the following steps:

[0146] B1: Select concave points: Take the titanium cup liner cup 21, make the sight line 45 degrees with the titanium cup liner cup 21 under the fluorescent lamp and rotate the mouth of the titanium cup liner cup 21 more than 360 degrees to check whether there are concave points on the outer surface of the titanium cup liner cup 21; make the sight line 30 degrees with the titanium cup liner cup 21 under the fluorescent lamp and rotate the outer diameter of the titanium cup liner cup 21 more than 360 degrees to check whether there are concave points on the inner side of the titanium cup liner cup 21. If there are no concave points on the outer surface and inner side of the titanium cup liner cup 21, start welding the inner liner bottom 22;

[0147] B2: Welding the inner liner bottom 22: Use continuous automatic laser welding equipment with gas protection function to weld the titanium cup inner liner 21 and the inner liner bottom 22. The welding power is 850W, the rotation speed is 15 rpm, and the welding time is 25S. After welding is completed, the titanium cup inner liner 2 is obtained.

[0148] Preferably, the pretreatment of the vacuum bottom 4 of the titanium cup in step S5 comprises the following steps:

[0149] C1: The vacuum bottom 4 of the titanium cup is placed in an alkaline degreasing solution and cleaned for 18 minutes. After cleaning, the vacuum bottom 4 is placed in an oven at 110° C. for drying;

[0150] C2: A zirconium-based high-temperature getter 45 is used and fixed to the inner side of the bottom of the titanium cup vacuum bottom 4 by spot welding.

[0151] Preferably, the pretreatment of the titanium cup bottom sheet 5 in step S10 comprises the following steps:

[0152] D1: The titanium cup bottom sheet 5 is placed in an alkaline degreasing solution and cleaned for 18 minutes. After cleaning, it is placed in an oven at 110° C. for drying;

[0153] D2: The titanium cup bottom sheet 5 is crystallized in a vacuum furnace C. The vacuum degree in the vacuum furnace C is adjusted to less than 0.001 Pa, and the temperature is set to 1150° C. and maintained for 7 hours.

[0154] Preferably, the lower die 7 in step S10 includes a lower die sleeve 71, a first bearing 72, and a lower die shaft 73. The lower die sleeve 71 cooperates with the mouth of the arc-shaped bottom titanium cup 8. One end of the lower die shaft 73 is rotatably connected to the lower die sleeve 71 through the first bearing 72, and the other end of the lower die shaft 73 is connected to the cylinder 74.

[0155] Preferably, in step S10, the upper mold 6 includes a positioning sleeve 62, a movable rod assembly 63, a gas protection cover 64, and a second bearing 66. The positioning sleeve 62 and the gas protection cover 64 are rotatably connected via the second bearing 66. The positioning sleeve 62 cooperates with the bottom of the arc-shaped bottom titanium cup 8. The movable rod assembly 63 and the gas protection cover 64 are slidably connected. The movable rod assembly 63 is in conflict with the titanium cup bottom film 5. The gas chamber 61 is formed between the positioning sleeve 62 and the gas protection cover 64.

[0156] Preferably, in step S5, a first step 42 and a second step 43 are provided on the step groove 41, a reinforcing rib 44 is provided between the first step 42 and the second step 43, and in step S10, the titanium cup bottom plate 5 is completely welded to the first step 42, and a zirconium-based high-temperature getter 45 is welded to the inner side of the second step 43.

[0157] Preferably, the upper mold 6 also includes an air inlet pipe assembly 65 , and the gas protection cover 64 is provided with a light inlet hole 641 , the position of the light inlet hole 641 corresponds to the position of the automated pulse laser welding equipment 9 , and the air inlet pipe assembly 65 is inserted into the gas protection cover 64 .

[0158] In conclusion, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. A manufacturing process for a curved bottom titanium cup, characterized in that: The method comprises the following preparation steps: S1: Pressing the inner support ring (3): taking the inner support ring (3) and the pre-treated titanium cup shell (1), and gradually pressing the inner support ring (3) into the bottom end of the titanium cup shell (1), so that an interference fit is formed between the inner support ring (3) and the titanium cup shell (1), and a part of the inner support ring (3) is set to remain outside the bottom end of the titanium cup shell (1); S2: primary crystallization: a vacuum furnace A is used to perform primary crystallization on the titanium cup outer shell (1) and the inner support ring (3). The vacuum degree in the vacuum furnace A is adjusted to less than 0.001 Pa, the temperature is set to 1100-1200° C. and the heating is continued for 3-10 hours, so that the titanium cup outer shell (1) and the inner support ring (3) are adhered together; S3: Matching: taking the pre-treated titanium cup liner (2) and the titanium cup shell (1) treated in step S2 and performing matching treatment, so that a uniform vacuum layer gap is formed between the titanium cup liner (2) and the titanium cup shell (1); S4: welding: using a continuous automatic laser welding device with a gas protection function to weld the mouth of the titanium cup inner liner (2) and the mouth of the titanium cup outer shell (1), with a welding power of 200-1500W, a rotation speed of 1-30 rpm, and a welding time of 1-50S, to obtain a titanium cup body; S5: Pressing the titanium cup vacuum bottom (4): taking the pre-treated titanium cup vacuum bottom (4) with an arc-shaped bottom edge and a step groove (41) and the titanium cup body obtained in step S4, pressing the titanium cup vacuum bottom (4) along the outer side surface of the inner support ring (3) to perform a pressing process, so that the end surface of the titanium cup vacuum bottom (4) is flatly fitted with the end surface of the bottom of the titanium cup body; S6: welding the titanium cup vacuum bottom (4): placing the titanium cup body and the titanium cup vacuum bottom (4) processed in step S5 horizontally, and welding them using an automatic laser welding device with a gas protection function. Under the action of the welding laser, the titanium metal at the joint between the titanium cup body and the titanium cup vacuum bottom (4) melts and adheres to the inner support ring (3), so that the titanium cup vacuum bottom (4) is completely welded to the titanium cup body, thereby obtaining an arc-bottom titanium cup (8); S7: Secondary crystallization: The arc-bottom titanium cup (8) is subjected to secondary crystallization in a vacuum furnace B, the vacuum degree in the vacuum furnace B is adjusted to less than 0.001 Pa, the temperature is set to 1100-1200° C. and maintained for 3-10 hours; S8: Vacuuming: placing the arc-bottom titanium cup (8) in an environment of 800-1000° C. for vacuuming and maintaining the temperature for 3-10 hours; S9: Detecting the heat preservation function: the arc-bottom titanium cup (8) that has been vacuumed is inverted at the hot air outlet of the temperature measuring machine, and hot air at 150-260° C. is blown into the inner liner of the arc-bottom titanium cup (8) for 35-50 seconds. After the blowing is completed, the temperature of the outer side of the arc-bottom titanium cup (8) is detected. If the detected temperature value is 20-25° C., it is determined that the heat preservation performance of the arc-bottom titanium cup (8) is qualified; S10: welding the bottom film: taking the pre-treated titanium cup bottom film (5) and the arc-shaped bottom titanium cup (8), placing the mouth of the arc-shaped bottom titanium cup (8) into the lower mold (7) connected to the cylinder (74) for positioning, placing the titanium cup bottom film (5) into the step groove (41) at the bottom of the arc-shaped bottom titanium cup (8) and pressing it through the upper mold (6), and injecting argon gas into the gas chamber (61) provided in the upper mold (6) to separate the welding point from the air, and using an automated pulse laser welding device (9) for welding, the rotation drive assembly (10) of the upper mold (6) drives the upper mold (6) to rotate 370°, and at the same time the upper mold (6) drives the arc-shaped bottom titanium cup (8) to rotate 370°, so that the titanium cup bottom film (5) and the step groove (41) are completely welded; S11: surface polishing: fix the arc-shaped bottom titanium cup (8), and grind the surface of the arc-shaped bottom titanium cup (8) using a high-speed rotating cloth wheel, with the rotation speed set to 1000-4000 rpm and the polishing time set to 3-100 min; S12: oxidation treatment: the arc-shaped bottom titanium cup (8) is subjected to oxidation treatment by adopting an anodic oxidation process, and finally a arc-shaped bottom titanium cup is obtained.

2. The manufacturing process of a curved bottom titanium cup according to claim 1, characterized in that: The inner support ring (3) is made of titanium metal and has a thickness of 1.0-3.0 mm.

3. The manufacturing process of a curved bottom titanium cup according to claim 1, characterized in that: The pretreatment of the titanium cup shell (1) in step S1 comprises the following steps: A1: Take a titanium tube with a diameter of 35-150 mm, and after the steps of cutting, swelling, cupping, shrinking, cutting the head, finishing, finishing, thread rolling, flat mouth, flat bottom, and pressing, the titanium cup shell (1) is obtained after the forming is completed; A2: The titanium cup shell (1) is placed in an alkaline degreasing solution for cleaning for 5-30 minutes. After cleaning, it is placed in a 90-120° C. oven for drying, and then the surface is polished with a sanding belt and a fiber wheel to obtain a titanium cup shell (1) with a smooth surface.

4. The manufacturing process of a curved bottom titanium cup according to claim 1, characterized in that: The pretreatment of the titanium cup liner (2) in step S3 comprises the following steps: B1: Selecting concave points: Take the titanium cup inner liner cup (21), under a fluorescent lamp, make the sight line 45 degrees with the titanium cup inner liner cup (21) and rotate the mouth of the titanium cup inner liner cup (21) more than 360 degrees to check whether there are concave points on the outer surface of the titanium cup inner liner cup (21); under a fluorescent lamp, make the sight line 30 degrees with the titanium cup inner liner cup (21) and rotate the outer diameter of the titanium cup inner liner cup (21) more than 360 degrees to check whether there are concave points on the inner side of the titanium cup inner liner cup (21). If there are no concave points on the outer surface and the inner side of the titanium cup inner liner cup (21), start welding the inner liner bottom (22); B2: Welding the inner liner bottom (22): Using a continuous automatic laser welding device with a gas protection function, the titanium cup inner liner cup (21) and the inner liner bottom (22) are welded together. The welding power is 200-1500W, the rotation speed is 1-30 rpm, and the welding time is 1-50S. After the welding is completed, the titanium cup inner liner (2) is obtained.

5. The manufacturing process of a curved bottom titanium cup according to claim 1, characterized in that: The pretreatment of the titanium cup vacuum bottom (4) in step S5 comprises the following steps: C1: placing the titanium cup vacuum bottom (4) in an alkaline degreasing solution and cleaning it for 5-30 minutes, and then placing it in a 90-120° C. oven for drying after cleaning; C2: A zirconium-based high-temperature getter (45) is used and the zirconium-based high-temperature getter (45) is fixed to the inner side of the bottom of the titanium cup vacuum bottom (4) by spot welding.

6. The manufacturing process of a curved bottom titanium cup according to claim 1, characterized in that: The pretreatment of the titanium cup bottom film (5) in step S10 comprises the following steps: D1: placing the titanium cup bottom sheet (5) in an alkaline degreasing solution and washing for 5-30 minutes, and then placing it in a 90-120° C. oven for drying after washing; D2: The titanium cup bottom sheet (5) is subjected to crystallization treatment in a vacuum furnace C. The vacuum degree in the vacuum furnace C is adjusted to be less than 0.001 Pa, and the temperature is set to 1100-1200° C. and maintained for 3-10 hours.

7. The manufacturing process of a curved bottom titanium cup according to claim 1, characterized in that: The lower die (7) in step S10 includes a lower die sleeve (71), a first bearing (72), and a lower die shaft (73); the lower die sleeve (71) cooperates with the mouth of the arc-shaped bottom titanium cup (8); one end of the lower die shaft (73) is rotatably connected to the lower die sleeve (71) through the first bearing (72), and the other end of the lower die shaft (73) is connected to the cylinder (74).

8. The manufacturing process of the arc-bottom titanium cup according to claim 1, characterized in that: In step S10, the upper mold (6) includes a positioning sleeve (62), a movable rod assembly (63), a gas protection cover (64), and a second bearing (66). The positioning sleeve (62) and the gas protection cover (64) are rotatably connected via the second bearing (66). The positioning sleeve (62) cooperates with the bottom of the arc-shaped bottom titanium cup (8). The movable rod assembly (63) and the gas protection cover (64) are slidably connected. The movable rod assembly (63) is in conflict with the titanium cup bottom film (5). The gas chamber (61) is formed between the positioning sleeve (62) and the gas protection cover (64).

9. The manufacturing process of a curved bottom titanium cup according to claim 1, characterized in that: In step S5, the step groove (41) is provided with a first step (42) and a second step (43), and a reinforcing rib (44) is provided between the first step (42) and the second step (43). In step S10, the titanium cup bottom plate (5) is completely welded to the first step (42), and a zirconium-based high-temperature getter (45) is welded inside the second step (43).

10. The manufacturing process of the arc-bottom titanium cup according to claim 8, characterized in that: The upper mold (6) also includes an air inlet pipe assembly (65), and the gas protection cover (64) is provided with a light inlet hole (641), the position of the light inlet hole (641) corresponds to the position of the automated pulse laser welding equipment (9), and the air inlet pipe assembly (65) is inserted into the gas protection cover (64).

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