High vacuum diffusion welding with easy maintenance uniform pressure device

Abstract

The utility model discloses an easy maintenance even pressure device for high vacuum diffusion welding, including installation connection shell, still include the stainless steel fixing frame of fixed connection on installation connection shell. It is through steel pad, molybdenum ball head etc. Component instead of equipment pressure head pressure, avoid the indentation or local damage of upper pressure head because of multiple use, and the component is easy to maintain, need not to disassemble the high cost upper pressure head, solve the maintenance difficult, high cost problem of upper pressure head. Second, guarantee the accurate evenness of pressurization, and the plane contact of upper pressure head and welding mould is easy to lead to the pressure deviation of welding frock axial, and when the molybdenum ball head of device pressurizes, cooperate steel pad automatic leveling, can strictly along the axial pressure, avoid the situation of insufficient contact and uneven pressure of welding surface. Three are fast eliminate the bad influence, if the upper pressure head because of the local damage of multiple use influence welding, the device can directly replace the stress of upper pressure head, immediately restore normal welding process, guarantee the continuity of production.

Description

Technical Field

[0001] This utility model relates to the field of high vacuum diffusion welding technology, specifically to an easy-to-maintain uniform pressure device for high vacuum diffusion welding. Background Technology

[0002] High-vacuum diffusion welding is a precision welding technique that achieves atomic-level bonding at the interface of two or more workpieces by applying low pressure and appropriate temperature in a high-vacuum environment. This is accomplished through atomic diffusion and migration of atoms at the workpiece contact interface. A maintainable and uniform pressure application device is a key component of this process, providing stable and uniform pressure to ensure weld quality. These devices are characterized by their ingenious design and ease of maintenance, effectively meeting the welding requirements of high-vacuum environments.

[0003] In existing technologies, high-vacuum diffusion welding equipment used in general production or testing sometimes does not design the pressure head to be detachable in order to ensure pressure parallelism and to consider processing and usage costs. In production, the pressure head is designed to be detachable for maintenance or replacement, but this usually sacrifices the parallelism requirement. Detachable designs rely on bolts, locating pins, and other components for connection. Even with precision fit, there will still be small gaps at the connection points. When the pressure head is subjected to eccentric loads, these gaps can easily cause the pressure head to tilt, directly destroying the parallelism. Furthermore, if the pressure head is disassembled and installed, traditional clamping components cannot be adjusted according to the size of the pressure head because the pressure heads may vary in size. This may result in the fixing frame not being able to effectively fix the pressure head, potentially leading to loosening or installation limitation problems. Utility Model Content

[0004] The purpose of this invention is to provide an easy-to-maintain uniform pressure device for high vacuum diffusion welding, in order to solve the problems mentioned in the background art, such as poor parallelism caused by the detachable pressure head, easy tilting of the pressure head, and loose installation or limitation due to the inability to adapt to the size of the pressure head when disassembling and installing the pressure head.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an easy-to-maintain uniform pressure device for high vacuum diffusion welding, comprising a mounting connecting shell, a stainless steel fixing frame fixedly connected to the mounting connecting shell, an equipment pressure head disposed inside the stainless steel fixing frame, an adjustment component installed inside the mounting connecting shell, a clamping component installed on the output end of the adjustment component, a molybdenum ball head assembled inside the stainless steel fixing frame, and a steel pad disposed on the molybdenum ball head. When the molybdenum ball head presses the workpiece, the top surface of the steel pad contacts the bottom surface of the equipment pressure head. The adjustment component is used to drive the clamping component closer to or away from the equipment pressure head, and the clamping component is used to fix the equipment pressure head.

[0006] In the preferred embodiment of this technical solution, the stainless steel fixing frame has a groove at the corresponding position of the molybdenum ball head, and the molybdenum ball head slides inside the groove.

[0007] In the preferred embodiment of this technical solution, the stainless steel fixing frame has a slot at the corresponding position of the steel pad, and the steel pad is engaged inside the stainless steel fixing frame.

[0008] Based on the preferred embodiment of this technical solution, the clamping assembly includes a fixed bracket block installed on the output end of the adjustment assembly, a molybdenum screw threaded onto the fixed bracket block, a screw head fixedly connected to one end of the molybdenum screw, and a stainless steel top head fixedly connected to the other end of the molybdenum screw. When the molybdenum screw rotates, the stainless steel top head moves closer to or further away from the equipment pressure head.

[0009] In the preferred embodiment of this technical solution, the fixed support block has a slot at the corresponding position of the stainless steel top head, and the stainless steel top head moves inside the slot.

[0010] In a preferred embodiment of this technical solution, the adjustment assembly includes a mounting groove frame fixedly connected within the mounting housing, a rotating adjusting rod rotatably connected to the mounting groove frame, a rotating worm gear fixedly connected to the rotating adjusting rod, a rotating shaft rotatably connected inside the mounting housing, a rotating worm wheel fixedly connected to the rotating shaft, a rotating chuck fixedly connected to the rotating worm wheel, a guide block meshing with the rotating chuck, a sliding pressing block fixedly connected to the guide block, and a limit slider fixedly connected to the sliding pressing block. The limit slider is slidably connected inside the stainless steel mounting frame. When the rotating adjusting rod rotates, it drives the rotating worm gear to rotate inside the mounting groove frame. The rotating worm wheel meshes with the rotating worm gear, and the guide block meshes with the rotating chuck. The rotating worm gear drives the rotating worm wheel and the rotating shaft to rotate.

[0011] In the preferred embodiment of this technical solution, two guide blocks are provided, and both guide blocks are engaged with the rotating chuck.

[0012] In the preferred embodiment of this technical solution, the stainless steel fixing frame has a groove at the corresponding position of the limiting slider, and the limiting slider slides inside the groove.

[0013] In the preferred embodiment of this technical solution, the stainless steel fixing frame has a groove at the corresponding position of the sliding extrusion block, and the sliding extrusion block slides inside the groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. Significantly reduces maintenance costs: The device replaces the pressure head with components such as steel pads and molybdenum ball heads, preventing indentations or localized damage to the upper pressure head from repeated use. These components are also easily removable for maintenance, eliminating the need to disassemble the costly upper pressure head and resolving the issues of difficult and expensive maintenance. 2. Ensures precise and uniform pressurization: Contact between the upper pressure head and the welding mold plane can easily cause pressure deviation from the welding fixture's axial direction. However, the molybdenum ball head in the device, combined with the automatic leveling by the steel pads, ensures precise axial pressure application, preventing insufficient contact and uneven pressurization. 3. Quickly eliminates adverse effects: If the upper pressure head suffers localized damage due to years of use, affecting welding, the device can directly replace the upper pressure head, immediately restoring normal welding and ensuring production continuity.

[0015] 2. Through the cooperation of worm gear and threaded drive, the operator only needs to rotate the adjusting rod to drive two symmetrical guide blocks to move synchronously in the rotating chuck, causing the sliding extrusion block to move along the slide groove. This design allows for flexible adjustment of the position of the sliding extrusion block according to the size of the equipment's pressure head, ensuring that uniform and stable extrusion force can be applied to pressure heads of different sizes, avoiding loosening or installation limitation problems. At the same time, the limiting slider slides along the slide groove to guide the sliding extrusion block, ensuring its stable movement and further improving the fixing effect on the pressure head. Its adaptability and stability far exceed traditional clamping components, ensuring convenient operation and reliable fixing when disassembling and installing the pressure head. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one embodiment of the easy-to-maintain uniform pressure application device for high-vacuum diffusion welding according to this utility model; Figure 2 This is a schematic diagram of the internal structure of the stainless steel fixing frame of this utility model; Figure 3 This is a schematic diagram of the fixed support block structure of this utility model; Figure 4 This is a schematic diagram of the internal structure of the mounting and connecting shell of this utility model; Figure 5 This is a schematic diagram of the adjustment component structure of this utility model; Figure 6 This is a schematic diagram of the sliding extrusion block structure of this utility model.

[0017] In the diagram: 1. Mounting connection shell; 2. Stainless steel fixing frame; 3. Equipment pressure head; 801. Steel pad block; 802. Molybdenum ball head; 803. Fixing bracket block; 804. Molybdenum screw; 805. Screw head; 806. Stainless steel top head; 901. Mounting groove frame; 902. Rotating adjusting rod; 903. Rotating worm gear; 904. Rotating shaft; 905. Rotating worm wheel; 906. Rotating chuck; 907. Guide block; 908. Sliding extrusion block; 909. Limiting slider. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-6 This utility model provides an embodiment including a mounting connecting shell 1, a stainless steel fixing frame 2 fixedly connected to the mounting connecting shell 1, a device pressure head 3 disposed inside the stainless steel fixing frame 2, an adjustment component installed inside the mounting connecting shell 1, a clamping component installed on the output end of the adjustment component, a molybdenum ball head 802 assembled inside the stainless steel fixing frame 2, and a steel pad 801 disposed on the molybdenum ball head 802. When the molybdenum ball head 802 presses the workpiece, the top surface of the steel pad 801 contacts the bottom surface of the device pressure head 3. The adjustment component is used to drive the clamping component closer to or away from the device pressure head. 3. The clamping assembly is used to fix the equipment pressure head 3. The molybdenum ball head 802 applies pressure to the welding fixture. After being pressed, the molybdenum ball head 802 drives the steel pad 801 to be pushed upward. The steel pad 801 then sticks tightly to the end face of the equipment pressure head 3. Automatic leveling is achieved by cooperating with the molybdenum ball head 802 to ensure that the equipment pressure head 3 is subjected to uniform force. The fixing frame 2 is made of 310S high temperature resistant stainless steel. The tensile strength of this material is still above 200MPa at 900℃. The mounting connection shell 1 is also made of 310S stainless steel, which has the same coefficient of thermal expansion as the fixing frame 2 to prevent the structure from loosening due to thermal deformation differences at high temperature.

[0020] Please see Figure 3 A further solution based on this embodiment is as follows: a groove is provided on the stainless steel fixing frame 2 at the corresponding position of the molybdenum ball head 802, and the molybdenum ball head 802 slides inside the groove. By providing a dedicated groove for the molybdenum ball head 802 on the stainless steel fixing frame 2, the molybdenum ball head 802 can slide stably along the groove. On the one hand, the position of the molybdenum ball head 802 can be adjusted according to the thickness or shape of the workpiece to be welded, so that the steel pad 801 and the equipment pressure head 3 always maintain good contact, avoiding uneven pressure transmission due to poor contact. The molybdenum ball head 802 is made of TZM molybdenum alloy with a melting point of 2620℃ and a hardness of more than 180HB at 900℃, avoiding seizing with the steel pad 801 at high temperature. The steel pad 801 is a high-temperature alloy with an electrolytic polishing treatment on the surface to reduce the contact area with the molybdenum ball head 802 and the equipment pressure head 3. At the same time, the poor high-temperature compatibility with molybdenum is utilized to prevent the diffusion and welding of the three.

[0021] Please see Figure 2-3A further solution based on this embodiment is as follows: the stainless steel fixing frame 2 has a slot at the corresponding position of the steel pad 801, and the steel pad 801 is snapped into the inside of the stainless steel fixing frame 2. By designing a slot structure for the steel pad 801 on the stainless steel fixing frame 2, the steel pad 801 can be stably snapped into the inside of the stainless steel fixing frame 2. This not only allows for quick installation and removal of the steel pad 801, but also allows for easy replacement of the steel pad 801 by staff when it wears out due to long-term use, reducing maintenance time.

[0022] Please see Figure 2-3 A further solution based on this embodiment is as follows: The clamping assembly includes a fixed bracket block 803 installed on the output end of the adjustment assembly, a molybdenum screw 804 threadedly connected to the fixed bracket block 803, a screw head 805 fixedly connected to one end of the molybdenum screw 804, and a stainless steel top head 806 fixedly connected to the other end of the molybdenum screw 804. When the molybdenum screw 804 rotates, the stainless steel top head 806 moves closer to or further away from the equipment pressure head 3. By designing the clamping assembly as a combination structure of the fixed bracket block 803, the molybdenum screw 804, the screw head 805, and the stainless steel top head 806, and with the molybdenum screw 804 threadedly connected to the fixed bracket block 803, the operator can rotate the screw head 805 to move the molybdenum screw 804 within the fixed bracket block 803, thereby adjusting the contact pressure between the stainless steel top head 806 and the equipment pressure head 3, thus achieving a firm fixation of equipment pressure heads 3 of different sizes or materials, and preventing the equipment pressure head 3 from shaking during the pressurization process.

[0023] Please see Figure 2-3 A further solution based on this embodiment is as follows: the fixed support block 803 has a slot at the corresponding position of the stainless steel top head 806, and the stainless steel top head 806 moves inside the slot. By opening a slot for the stainless steel top head 806 on the fixed support block 803, the stainless steel top head 806 can move freely in the slot. On the one hand, it can provide motion guidance for the stainless steel top head 806, ensuring that it always maintains a straight line when moving with the molybdenum screw 804, and avoiding uneven clamping force on the equipment pressure head 3 due to deviation.

[0024] Please see Figure 4-6A further embodiment of this solution is as follows: the adjustment assembly includes a mounting groove bracket 901 fixedly connected to the mounting connecting shell 1, a rotating adjusting rod 902 rotatably connected to the mounting groove bracket 901, a rotating worm gear 903 fixedly connected to the rotating adjusting rod 902, a rotating shaft 904 rotatably connected to the inside of the mounting connecting shell 1, a rotating worm wheel 905 fixedly connected to the rotating shaft 904, a rotating chuck 906 fixedly connected to the rotating worm wheel 905, and a meshing connection to the rotating chuck 906. The guide block 907 on the 06, the sliding pressing block 908 fixedly connected to the guide block 907, and the limiting slider 909 fixedly connected to the sliding pressing block 908 are slidably connected inside the stainless steel fixing frame 2. When the rotating adjusting rod 902 rotates, it drives the rotating worm gear 903 to rotate inside the mounting groove frame 901. The rotating worm wheel 905 meshes with the rotating worm gear 903. The guide block 907 is meshed with the rotating chuck 906. The rotating worm gear 903... The rotating worm gear 905 and rotating shaft 904 are driven to rotate. The transmission structure of the rotating worm 903 and rotating worm gear 905 converts the rotational motion of the adjusting rod 902 into the rotation of the rotating shaft 904 and rotating chuck 906. Then, through the engagement of the rotating chuck 906 with the guide block 907, the sliding pressing block 908 is driven to move linearly, achieving precise adjustment of the clamping component's position. This mechanical transmission method features smooth transmission, high precision, and strong load-bearing capacity, ensuring the stability and reliability of the clamping component during adjustment. Simultaneously, the sliding cooperation between the limit slider 909 and the stainless steel fixing frame 2 further enhances the guidance and stability of the adjusting component's movement. The rotating worm 903 and rotating worm gear 905 are made of GH2132 high-temperature alloy, maintaining stable impact toughness at 900℃, ensuring stable transmission. The rotating threaded rod 907 is made of a special high-temperature alloy, combined with the 310S stainless steel material of the sliding pressing block 908, preventing direct metal-to-metal friction that could lead to welding failure at high temperatures.

[0025] Please see Figure 4-6 A further solution based on this embodiment is as follows: two guide blocks 907 are provided, and both guide blocks 907 are engaged with the rotating chuck 906. By providing two guide blocks 907 and having them both engaged with the rotating chuck 906, when the rotating chuck 906 rotates, it can simultaneously drive the two guide blocks 907 to move synchronously, thereby enabling the two sliding pressing blocks 908 to move symmetrically closer or further apart. This symmetrical design enables the clamping assembly to apply a balanced clamping force to the equipment pressing head 3, preventing the equipment pressing head 3 from tilting or being damaged due to uneven force, ensuring the stability and accuracy of the working position of the equipment pressing head 3, and also improving the structural symmetry and operational balance of the entire device.

[0026] Please see Figure 4-6A further solution based on this embodiment is as follows: the stainless steel fixing frame 2 has a groove at the corresponding position of the limiting slider 909, and the limiting slider 909 slides inside the groove. By opening a groove on the stainless steel fixing frame 2 for the limiting slider 909, the limiting slider 909 can slide stably along the groove. On the one hand, it can provide precise motion guidance for the sliding extrusion block 908, ensuring that the sliding extrusion block 908 always maintains linear motion when moving with the guide block 907, and avoiding uneven pressure transmission due to the deviation of the sliding extrusion block 908. On the other hand, the groove can limit the limiting slider 909, preventing it from detaching from the stainless steel fixing frame 2 during the sliding process, and ensuring the stability of the movement of the sliding extrusion block 908.

[0027] Please see Figure 4-6 A further solution based on this embodiment is as follows: the stainless steel fixing frame 2 has a groove at the corresponding position of the sliding extrusion block 908, and the sliding extrusion block 908 slides inside the groove. By opening a dedicated groove for the sliding extrusion block 908 on the stainless steel fixing frame 2, the sliding extrusion block 908 can slide smoothly in the groove. On the one hand, it can further limit the movement trajectory of the sliding extrusion block 908, ensure that it will not deviate laterally during the pressurization process, and keep the extrusion force of the sliding extrusion block 908 on the equipment pressure head 3 in the preset direction, thereby improving the accuracy of pressure application.

[0028] In another embodiment of the clamping assembly, other structures from the prior art can be used, such as a pneumatic cylinder and piston rod, to replace the fixed support block 803. The pneumatic cylinder's piston rod end is connected to a stainless steel mandrel 806, and the extension length of the piston rod is controlled by adjusting the cylinder's air pressure. Operators only need to adjust the air pressure via a pneumatic control valve to precisely control the clamping force and position of the stainless steel mandrel 806 on pressure heads of different sizes, making operation more convenient. Furthermore, the clamping force can be monitored in real time via a pressure sensor, preventing damage to the pressure head due to excessive force or instability due to insufficient force, resulting in higher adaptability and a higher degree of intelligence.

[0029] Based on another embodiment of the adjustment component, other structures from the prior art can also be used: for example, a ball screw can replace the guide block 907. A ball screw support seat is installed at a corresponding position inside the mounting housing 1, and the ball screw is rotatably connected through the support seat. A ball nut hole adapted to the ball screw is opened inside the sliding pressing block 908, and the two constitute a ball screw pair. At the same time, the rotating adjusting rod 902 is retained, and the rotating adjusting rod 902 is directly connected to one end of the ball screw through a coupling. During adjustment, the rotating adjusting rod 902 directly drives the ball screw to rotate, and the ball screw pair converts the rotational motion into the linear motion of the sliding pressing block 908. With the guiding action of the limit slider 909, the precise movement of the sliding pressing block 908 is achieved. The ball screw drive has the advantages of low friction coefficient, high transmission efficiency, and high positioning accuracy, which can effectively reduce energy loss during the adjustment process.

[0030] Working principle: The steel pad 801 and the molybdenum ball head 802 are sequentially inserted into the slot and slide of the stainless steel fixing frame 2. Then, the stainless steel fixing frame 2 is assembled with the equipment pressure head 3, i.e., the upper pressure head. By rotating the screw head 805 of the clamping assembly, the molybdenum screw 804 is moved within the fixing bracket block 803, causing the stainless steel top head 806 to press against the equipment pressure head 3 in a straight line along the slot, thus achieving a stable assembly of the stainless steel fixing frame 2 and the equipment pressure head 3. At the same time, the steel pad 801 and the molybdenum ball head 802 maintain a small distance from the equipment pressure head 3 by their own weight, laying the foundation for subsequent automatic leveling. After starting the high vacuum diffusion welding, the stainless steel fixing frame 2 moves downward synchronously with the equipment pressure head 3, first contacting the lever of the welding fixture below and pressing it down, completing the fixture alignment before welding. As the pressure head 3 continues to press down, the adjustment assembly begins to operate: rotating the adjustment rod 902 drives the rotating worm gear 903 to rotate, and through meshing transmission with the rotating worm wheel 905, the rotating chuck 906 drives two symmetrical guide blocks 907 to slide synchronously inside the fixed frame 2, thereby driving the sliding extrusion block 908 to slide along the limiting groove inside the fixed frame 2. The limiting slider 909 guides the sliding extrusion block 908 along the corresponding groove to ensure stable force application. At this time, the molybdenum ball head 802 slides along the groove of the stainless steel fixed frame 2, precisely applying pressure to the welding fixture. After being pressed, the molybdenum ball head 802 drives the steel pad block 801 to rise upward. The steel pad block 801 adheres tightly to the end face of the pressure head 3 along the groove. With the cooperation of the two, automatic leveling is achieved, avoiding uneven pressure transmission. Finally, the extrusion pressure of the sliding extrusion block 908 is evenly transmitted to the welding fixture through the equipment pressure head 3, steel pad block 801 and molybdenum ball head 802, and the self-locking function of the worm gear drive prevents pressure back, thus achieving stable and uniform pressurization in a high vacuum environment and ensuring welding quality.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-vacuum diffusion welding easy-to-maintain uniform pressure device, comprising a mounting and connecting shell (1), characterized in that: It also includes a stainless steel mounting bracket (2) fixedly connected to the mounting housing (1), an equipment pressure head (3) set inside the stainless steel mounting bracket (2), an adjustment component installed inside the mounting housing (1), a clamping component installed on the output end of the adjustment component, a molybdenum ball head (802) assembled inside the stainless steel mounting bracket (2), and a steel pad (801) set on the molybdenum ball head (802). When the molybdenum ball head (802) presses the workpiece, the top surface of the steel pad (801) contacts the bottom surface of the equipment pressure head (3). The adjustment component is used to drive the clamping component to move closer to or away from the equipment pressure head (3), and the clamping component is used to fix the equipment pressure head (3).

2. The easy-to-maintain uniform pressure application device for high-vacuum diffusion welding according to claim 1, characterized in that: The stainless steel fixing bracket (2) has a groove at the corresponding position of the molybdenum ball head (802), and the molybdenum ball head (802) slides inside the groove.

3. The easy-to-maintain uniform pressure application device for high-vacuum diffusion welding according to claim 1, characterized in that: The stainless steel fixing bracket (2) has a slot at the corresponding position of the steel pad (801), and the steel pad (801) is engaged inside the stainless steel fixing bracket (2).

4. The easy-to-maintain uniform pressure application device for high-vacuum diffusion welding according to claim 1, characterized in that: The clamping assembly includes a fixed bracket block (803) mounted on the output end of the adjustment assembly, a molybdenum screw (804) threaded onto the fixed bracket block (803), a screw head (805) fixedly connected to one end of the molybdenum screw (804), and a stainless steel top head (806) fixedly connected to the other end of the molybdenum screw (804). When the molybdenum screw (804) rotates, the stainless steel top head (806) moves closer to or further away from the equipment pressure head (3).

5. The easy-to-maintain uniform pressure application device for high-vacuum diffusion welding according to claim 4, characterized in that: The fixed support block (803) has a slot at the corresponding position of the stainless steel top head (806), and the stainless steel top head (806) moves inside the slot.

6. The easy-to-maintain uniform pressure application device for high-vacuum diffusion welding according to claim 1, characterized in that: The adjustment assembly includes a mounting groove bracket (901) fixedly connected to the mounting housing (1), a rotating adjustment rod (902) rotatably connected to the mounting groove bracket (901), a rotating worm gear (903) fixedly connected to the rotating adjustment rod (902), a rotating shaft (904) rotatably connected to the mounting housing (1), a rotating worm wheel (905) fixedly connected to the rotating shaft (904), a rotating chuck (906) fixedly connected to the rotating worm wheel (905), a guide block (907) meshing with the rotating chuck (906), and a guide block fixedly connected to the guide block. The sliding extrusion block (908) on (907) has a fixed limit slider (909) on it. The limit slider (909) is slidably connected inside the stainless steel fixed frame (2). When the rotating adjustment rod (902) rotates, it drives the rotating worm (903) to rotate inside the mounting groove frame (901). The rotating worm wheel (905) meshes with the rotating worm (903). The guide block (907) is meshed with the rotating chuck (906). The rotating worm (903) is used to drive the rotating worm wheel (905) to rotate and the rotating shaft (904) to rotate.

7. The easy-to-maintain uniform pressure application device for high-vacuum diffusion welding according to claim 1, characterized in that: There are two guide blocks (907), and both guide blocks (907) are engaged with the rotating chuck (906).

8. The easy-to-maintain uniform pressure application device for high-vacuum diffusion welding according to claim 1, characterized in that: The stainless steel fixing bracket (2) has a groove at the corresponding position of the limiting slider (909), and the limiting slider (909) slides inside the groove.

9. The easy-to-maintain uniform pressure application device for high-vacuum diffusion welding according to claim 1, characterized in that: The stainless steel fixing frame (2) has a groove at the corresponding position of the sliding extrusion block (908), and the sliding extrusion block (908) slides inside the groove.

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