Automatic adjustment of extrusion force by centrifugal force

Abstract

The application provides a kind of automatic adjusting extrusion force device by centrifugal force, which comprises a welded cylinder and a rotating support frame, and the closed space surrounded by the rotating support frame and the welded cylinder is a centrifugal cavity, and the centrifugal cavity is provided with an automatic adjusting layer composed of multiple adjusting balls, a buffer layer and an extrusion force uniformization layer composed of multiple extrusion force uniformization balls.The application drives the welded cylinder to rotate by rotating support device, and generates extrusion force on the inner wall of the welded cylinder by centrifugal motion, and the combined action of adjusting balls, buffer layer and extrusion force uniformization balls can automatically adjust the extrusion force, so that the extrusion force on the inner wall of the welded cylinder is uniform in circumferential and axial directions, and the extrusion force can simulate the stress in the shell during the actual launch of the warhead. The welded joint strength is tested by using the application, and the welded joint strength meets the requirements before use, which can ensure the safety of the shell during the launch of the warhead.

Description

Technical Field

[0001] This invention belongs to the field of extrusion device technology, and relates to an extrusion pressure regulating device, particularly an extrusion pressure automatically regulating device by centrifugal force. Background Technology

[0002] The bulk detonation warhead is filled with high-energy fuel. Driven by the explosive detonation, the high-energy fuel is ejected into the air. The high-energy fuel mixes with the air to form a large-scale active cloud. After a secondary detonation by the explosive, the active cloud produces a bulk detonation, releasing a powerful shock wave. It is one of the most powerful weapons.

[0003] For a bulk detonation warhead with a diameter of 600mm and a length of 800mm, the shell of the bulk detonation warhead is a hollow cylinder. The hollow cylinder is composed of a thin-walled cylindrical body and cover plates at both ends. The thin-walled cylindrical body can be formed by rolling steel plates into cylinders and welding them at the joints, i.e., roll welding. The thickness of the steel plate is the same as the wall thickness of the shell. The rolled and welded cylinder does not require further processing. Compared with thin-walled cylindrical bodies made by further processing cast blanks, bars, and tubes, roll welding saves processing costs and time.

[0004] The strength of the weld formed at the joint of a rolled steel plate into a cylinder cannot be tested using existing methods. Welds can usually be detected using non-destructive testing methods, such as radiographic testing, but this method can only detect internal defects such as porosity or cracks, and cannot obtain an accurate value for the weld strength. Another method for testing weld strength is destructive testing, which involves forcibly breaking the weld under tensile force to obtain its strength. However, welding is a specialized and complex process; the tensile force required to break the weld varies significantly from one rolled thin-walled cylinder to another. Therefore, the weld strength of one rolled thin-walled cylinder cannot represent the strength of other welds.

[0005] During the launch of a bulk detonation warhead, it experiences a large overload and internal stress. If the weld of the thin-walled cylindrical body is not strong enough, it will break at the weld, leading to the disintegration of the warhead and causing a major accident. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention aims to provide a device that automatically adjusts the extrusion pressure using centrifugal force, thereby solving the technical problem that existing weld inspection methods are unable to accurately detect the weld strength of thin-walled cylindrical bodies of bulk detonation warheads.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] An automatic centrifugal force-adjustable extrusion pressure device includes a welded cylindrical body, which is installed inside a rotating support frame. The rotating support frame is a rotating body capable of rotating around its axis. The rotating support frame includes a central shaft, which is coaxially located at the center of the welded cylindrical body. An end cap is installed at each of the two axial ends of the central shaft, and the two axial ends of the welded cylindrical body are respectively fitted into the two end caps. The sealed space enclosed by the two end caps, the welded cylindrical body, and the central shaft is a centrifugal cavity.

[0009] The centrifuge chamber is filled with multiple adjusting balls, which, under the action of centrifugal force, can be arranged into a cylindrical automatic adjusting layer. The axial ends of the automatic adjusting layer are in close contact with two end caps, respectively. A cylindrical buffer layer is coaxially arranged in the centrifuge chamber outside the automatic adjusting layer. The axial ends of the buffer layer are in close contact with two end caps, respectively, and the radial inner side of the buffer layer is in close contact with the adjusting balls radially outer of the automatic adjusting layer. The centrifuge chamber between the buffer layer and the welded cylinder is filled with multiple pressure homogenizing balls, which are arranged into a cylindrical pressure homogenizing layer. The axial ends of the pressure homogenizing layer are in close contact with two end caps, respectively, and the radial inner side of the pressure homogenizing layer is in close contact with the radial inner side of the buffer layer. The radial outer side of the pressure homogenizing layer is in close contact with the radial inner side of the welded cylinder.

[0010] The present invention also has the following technical features:

[0011] The diameter of the adjusting ball is 10mm to 12mm.

[0012] The ratio of the diameter of the pressure homogenizing ball to the diameter of the adjusting ball is 1:(8-10).

[0013] The extrusion pressure homogenization layer consists of eight layers of extrusion pressure homogenization spheres from the inside out.

[0014] A pressure sensor is provided on the radial inner side of the welded cylinder, and the pressure sensor is located between the welded cylinder and the extrusion pressure homogenizing ball.

[0015] The material of the buffer layer is rubber.

[0016] The number of regulating balls is 300 to 350.

[0017] The ratio of the number of pressure homogenizing balls to the number of adjusting balls is 1:0.001 to 0.0014.

[0018] The regulating ball is made of tungsten alloy; the extrusion pressure homogenizing ball is made of polytetrafluoroethylene.

[0019] The method of using the centrifugal force automatic adjustment extrusion pressure device includes the following process: After the device has been rotating stably for ten minutes, remove all components, take out the welded cylinder, measure the diameter of the welded cylinder, and measure ten points at equal intervals along the axial direction. If there is a change in the size compared with the size before the experiment, it indicates that the weld has deformed and the strength is insufficient to meet the requirements of the warhead; if the size is consistent with the size before the experiment, it indicates that the weld has not deformed and the strength is sufficient to meet the requirements of the warhead.

[0020] Compared with the prior art, the present invention has the following technical effects:

[0021] This invention uses a rotating support device to drive the welded cylinder to rotate, and the centrifugal motion generates a compressive force on the inner wall of the welded cylinder. The combined action of the adjusting ball, buffer layer, and compressive force homogenizing ball can automatically adjust this compressive force, ensuring that the compressive force on the inner wall of the welded cylinder is uniform in both the circumferential and axial directions. This compressive force can simulate the internal stress of the warhead shell during actual launch. Using this invention to inspect the weld strength, and ensuring that the weld strength meets the requirements before use, guarantees the safety of the warhead shell during launch. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a device that automatically adjusts extrusion pressure using centrifugal force.

[0023] The meanings of the labels in the figure are as follows: 1-rolled and welded cylindrical body, 2-rotating support frame, 3-centrifuge chamber, 4-adjusting ball, 5-buffer layer, 6-extrusion pressure homogenizing ball.

[0024] 201 - Central shaft, 202 - End cap.

[0025] The specific content of the present invention will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0026] In this invention: the rolled cylindrical body 1 is formed by rolling a sheet into a cylinder and then welding it. The welding position is at the joint after the sheet is rolled into a cylinder, which is the weld. This invention is used to test the strength of the weld.

[0027] It should be noted that, unless otherwise specified, all components in this invention are those known in the art.

[0028] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0029] Example 1:

[0030] This embodiment provides a device for automatically adjusting extrusion pressure using centrifugal force, such as... Figure 1 As shown, the device includes a welded cylindrical body 1, which is a cylindrical structure and a rotating body. The axis of rotation of the welded cylindrical body 1 is parallel to the ground. Both axial ends of the welded cylindrical body 1 are open. The welded cylindrical body 1 is installed in a rotating support frame 2. The axial section of the rotating support frame 2 is I-shaped. The rotating support frame 2 is a rotating body and can rotate around its axis of rotation. The rotating support frame 2 includes a central shaft 201, which is coaxially arranged at the center of the welded cylindrical body 1. An end cap 202 is installed at each of the axial ends of the central shaft 201. The axial ends of the welded cylindrical body 1 are respectively clamped in the two end caps 202. The sealed space enclosed by the two end caps 202, the welded cylindrical body 1, and the central shaft 201 is a centrifugal chamber 3, which is a ring-shaped cylindrical structure.

[0031] The centrifuge chamber 3 is filled with multiple adjusting balls 4, which are spherical in structure. Under the action of centrifugal force, the multiple adjusting balls 4 can be arranged into a cylindrical automatic adjusting layer. The axial ends of the automatic adjusting layer are in close contact with the two end caps 202 respectively. A cylindrical buffer layer 5 is coaxially arranged in the centrifuge chamber 3 outside the automatic adjusting layer. The axial ends of the buffer layer 5 are in close contact with the two end caps 202 respectively, and the radial inner side of the buffer layer 5 is in close contact with the adjusting balls 4 on the radial outer side of the automatic adjusting layer. The centrifuge chamber 3 between the buffer layer 5 and the welded cylindrical body 1 is filled with multiple pressure homogenizing balls 6, which are spherical in structure. The multiple pressure homogenizing balls 6 are arranged into a cylindrical pressure homogenizing layer. The axial ends of the pressure homogenizing layer are in close contact with the two end caps 202 respectively, the radial inner side of the pressure homogenizing layer is in close contact with the radial inner side of the buffer layer 5, and the radial outer side of the pressure homogenizing layer is in close contact with the radial inner side of the welded cylindrical body 1.

[0032] In one specific embodiment, the number of adjusting balls 4 is 300-350. The rotation of the adjusting balls 4 generates centrifugal force, which is the driving force for the internal stress in the weld. If the diameter of the adjusting balls 4 is too small, or if there are too many adjusting balls 4, the total surface area is too large. The frictional force of the contact surface is related to the total area of ​​the contact surface; if the total surface area is too large, the frictional force of the contact surface will be too large, hindering the movement of the adjusting balls 4. The reason why this invention can automatically adjust the internal extrusion pressure is that when the internal extrusion pressure is uneven, the adjusting balls 4 will move, exhibiting a tendency to automatically balance. If the frictional force is too large, hindering the movement of the adjusting balls 4, the invention will fail. Furthermore, if the number of adjusting balls 4 is too small, a uniform distribution cannot be achieved; if the number is too large, the frictional force between them reduces the extrusion effect.

[0033] In one specific embodiment, the diameter of the adjusting ball 4 is 10mm. When the diameter of the adjusting ball 4 is too large, the space occupied by the adjusting ball 4 is too large, the distance between the adjusting balls 4 is too large, the pressure exerted by the adjusting ball 4 is large, and the pressure between the adjusting balls 4 is small because they cannot effectively fit with the buffer layer 5. This non-uniformity becomes more pronounced as the diameter of the adjusting ball 4 increases. When the force uniformity is too large, the pressure homogenizing ball 6 and the buffer layer 5 cannot effectively homogenize the force, failing to generate uniform internal stress and thus failing to achieve the desired effect of this invention. Through some theoretical calculations, a collective discussion was held with experienced personnel, and the above problems were broken down and each module was experimentally evaluated separately. Ultimately, it was concluded that when the diameter of the adjusting ball 4 is 10-12mm, all the above problems can be avoided, the design advantages of this invention can be fully realized, the function of this invention can be fully realized, and the problem can be completely solved using this invention.

[0034] As a specific embodiment, the extrusion pressure homogenization layer consists of eight layers of extrusion pressure homogenization spheres 6 from the inside out. The function of the extrusion pressure homogenization spheres 6 is to transmit the internal extrusion pressure outward and to homogenize it. The internal extrusion pressure is generated by the adjusting ball 4. The adjusting ball 4 has a larger diameter, and the extrusion pressure generated is greater at the spherical positions and smaller between the spherical bodies. After the extrusion pressure homogenization spheres 6 are subjected to extrusion pressure, the spherical bodies interact with each other, so that the extrusion pressure is rebalanced and then transmitted outward with a uniform extrusion pressure along the circumferential axis. When the number of extrusion pressure homogenization layers from the inside out is too small, the ability to homogenize internal stress is reduced because the extrusion pressure homogenization layer transmits the extrusion pressure to the adjacent extrusion pressure homogenization spheres 6 after being subjected to extrusion pressure. After multiple transmissions, the extrusion pressure becomes uniform.

[0035] If the number of layers is too small, the transmission distance is insufficient, making it impossible to uniformly distribute the internal extrusion pressure. If the number of extrusion pressure homogenization layers from the inside out is too large, it means that the cylinder composed of extrusion pressure homogenization balls 6 is too thick, occupying too much space. Furthermore, since the adjusting ball 4 is located inside, its distribution diameter becomes smaller. The centrifugal force generated by the rotating adjusting ball 4 is related to both the rotational speed and the distance; a small distribution diameter results in insufficient centrifugal force, failing to effectively extrude the weld. Through extensive experiments, it was found that when the extrusion pressure homogenization layer consists of eight layers of extrusion pressure homogenization balls 6 from the inside out, the internal extrusion pressure can be completely homogenized when transmitted outwards without occupying too much space or hindering the generation of sufficient centrifugal force. This allows for effective inspection of the weld.

[0036] As a specific embodiment, a pressure sensor is provided on the radial inner side of the welded cylindrical body 1, and the pressure sensor is located between the welded cylindrical body 1 and the extrusion pressure homogenizing ball 6.

[0037] As a specific embodiment, the ratio of the diameter of the pressure homogenizing ball 6 to the diameter of the adjusting ball 4 is 1:(8~10). If the ratio is too large, the diameter of the pressure homogenizing ball 6 will be too large, and the effect of local pressure homogenization will not be achieved. If the ratio is too small, the overall movement ability will be reduced, and the effect of uniform pressure throughout the whole will not be achieved.

[0038] As a specific embodiment, the ratio of the number of pressure homogenizing balls 6 to the number of adjusting balls 4 is 1:0.001 to 0.0014. If it is lower than this range, the difference between the two is not obvious enough, the degree of pressure homogenization is too low, and the overall pressure uniformity cannot be achieved. If it is higher than this range, the difference between the two is too large, and the most effective coordination in pressure transmission cannot be achieved.

[0039] In one specific embodiment, the adjusting ball 4 is made of tungsten alloy; the extrusion pressure homogenizing ball 6 is made of polytetrafluoroethylene (PTFE). PTFE has a low coefficient of friction, allowing for better homogenization of extrusion pressure through more flexible relative movement, while tungsten alloy has a high density, providing better extrusion pressure.

[0040] As a specific embodiment, the material of the buffer layer 5 is rubber.

[0041] As a specific and optional solution in this embodiment, the two end caps 202 are detachably installed at both ends of the central shaft 201 to facilitate the installation and disassembly of the welded cylindrical body 1.

[0042] As a specific and optional solution in this embodiment, one end cap 202 is detachably installed on one axial end of the central shaft 201, and the other end cap 202 is fixedly installed on the other axial end of the central shaft 201, so as to facilitate the installation and disassembly of the welded cylindrical body 1.

[0043] The method of using the centrifugal force-automatically-adjusting extrusion pressure device of the present invention specifically includes the following steps:

[0044] Step 1, Device Assembly:

[0045] Assemble the welded cylindrical body 1 and the rotating support frame 2, measure the diameter of the welded cylindrical body 1, and measure ten points at equal intervals along the axial direction; assemble the buffer layer 5 and the rotating support frame 2; insert the pressure homogenizing ball 6 between the welded cylindrical body 1 and the buffer layer 5; insert the adjusting ball 4 into the centrifugal cavity 3 inside the buffer layer 5.

[0046] Step 2, Device Operation:

[0047] Rotating the rotating support frame 2 around its axis of rotation, the welded cylindrical body 1, the pressure homogenizing balls 6, the buffer layer 5, and the adjusting balls 4 all rotate around the axis of rotation of the rotating support frame 2 under the drive of the rotating support frame 2. This rotation generates centrifugal force, causing the adjusting balls 4 to gradually move away from the central axis 201. Multiple adjusting balls 4 exert mutual pressure on each other. Because the angular velocity of the multiple adjusting balls 4 is the same, the centrifugal force of each layer of adjusting balls 4 is the same. Under the mutual pressure, the multiple adjusting balls 4 automatically tend towards a state of uniform overall pressure. When the pressure of an adjusting ball 4 at a certain position exceeds or falls below that at other positions, the imbalance of force will cause the adjusting ball 4 to move. When all the adjusting balls 4 are in equilibrium, the multiple adjusting balls 4 are arranged into an automatic adjusting layer with a cylindrical structure. The extrusion pressure is the same at all points in the automatic adjusting layer, and the extrusion pressure at each point is automatically adjusted to equilibrium by centrifugal force. The automatic adjusting layer will compress the buffer layer 5, and the buffer layer 5 will transfer the extrusion pressure to the extrusion pressure homogenizing ball 6. The extrusion pressure homogenizing ball 6 will then compress the welded cylindrical body 1. Under the action of internal extrusion pressure, the welded cylindrical body 1 will generate circumferential tension, and the weld will be stretched. By adjusting the rotation speed of the rotating support frame 2 and reading the pressure sensor value, the internal stress on the welded cylindrical body 1 will be the same as the internal stress of the casing when the warhead is actually launched.

[0048] Step 3, inspect the rolled and welded cylindrical body:

[0049] After the device has been rotating stably for ten minutes, remove all components and take out the welded cylindrical body 1. Measure the diameter of the welded cylindrical body 1 and measure ten points at equal intervals along the axial direction. If the size has changed from the size before the experiment, it indicates that the weld has deformed and the strength is insufficient to meet the requirements of the warhead. If the size is consistent with the size before the experiment, it indicates that the weld has not deformed and the strength is sufficient to meet the requirements of the warhead.

[0050] The working principle of the centrifugal force-based automatic pressure adjustment device of the present invention is as follows:

[0051] After the steel plate is rolled into a cylinder, the ends are welded together. The strength of the weld cannot be tested using conventional methods. This invention applies internal stress to the inside of the cylinder, causing the weld to be subjected to tension. The value of the internal stress is measured by a sensor and is consistent with that under actual use conditions. This means that the weld is subjected to the tensile force under actual use. If the weld is intact, it proves that the weld strength meets the usage requirements.

[0052] This invention applies internal stress to the inner side of the cylinder by relying on the centrifugal force generated by the centrifugal motion of numerous spheres. The spheres are of two types: a smaller diameter sphere (6) for uniformizing the extrusion pressure, and a larger diameter sphere (4). Because the larger diameter of the 4 sphere reduces its total surface area and the contact area between them, friction is reduced, facilitating the movement of the larger sphere and thus applying uniform extrusion pressure. Due to processing and assembly errors, the centrifugal force generated by the spheres cannot be completely uniform, and errors always exist. For weld strength testing, it is essential to ensure that the internal stress is the same at all locations on the inner wall of the cylinder where the weld is located; that is, the internal extrusion pressure must be uniform along the circumferential axis. When the internal extrusion pressure is inconsistent, the 4 spheres move due to the uneven force. The 4 sphere with greater force experiences less internal stress after moving, while the 4 sphere with less force experiences increased internal stress after moving. In other words, as long as the extrusion pressure is different between different parts, there will be an imbalance of forces, leading to movement until the extrusion pressure is equal at all parts. This process is automatically adjusted.

[0053] The function of the buffer layer 5 is to buffer the extrusion pressure of the adjusting ball 4 and transfer it to the extrusion pressure homogenizing ball 6. Because the adjusting ball 4 has a large diameter, the extrusion pressure at the direct contact point of the adjusting ball 4 is large, while the extrusion pressure between the adjusting balls 4 is small. Although the resulting extrusion pressure is uniform macroscopically through automatic adjustment, there are still differences in size microscopically. After passing through the buffer layer 5, it acts on the extrusion pressure homogenizing ball 6. The extrusion pressure homogenizing ball 6 is a small-diameter sphere, mainly used to further homogenize the extrusion pressure generated by the adjusting ball 4. The extrusion pressure homogenizing balls 6 squeeze each other, and when the force is unbalanced, they will also move until the force is balanced in all parts. Then, the uniform extrusion pressure in all parts is transferred to the inner wall of the welded cylinder 1. Because the extrusion pressure homogenizing ball 6 has a small diameter, it can squeeze all points inside the welded cylinder 1, and the extrusion pressure is consistent. This makes the tensile force on the weld consistent along the entire weld, and the tensile force on the weld is consistent with the actual state, improving the accuracy of the measurement results.

[0054] Verification of the effect of Example 1:

[0055] In an embodiment of the invention, an automatic pressure adjustment device based on centrifugal force was fabricated. A large number of pressure sensors were attached between the contact surfaces of the welded cylindrical body 1 and the pressure homogenizing ball 6. These pressure sensors were evenly distributed along the circumferential and axial directions. The device was then operated according to the method described in this invention, and the pressure sensor values ​​were read. It was found that the error between the maximum and minimum pressure sensor values ​​did not exceed 8%, indicating that when using this invention to inspect the weld of the welded cylindrical body 1, the pressure on the inner wall of the welded cylindrical body 1 is uniform and consistent. This demonstrates that the detection of weld strength is scientifically sound and proves the effectiveness of this invention.

[0056] Example 2:

[0057] This embodiment provides a device for automatically adjusting extrusion pressure using centrifugal force. The specific structure of this device is basically the same as that of Embodiment 1, except that the diameter of the adjusting ball 4 is 12mm.

[0058] Verification of the effect of Example 2:

[0059] In an embodiment 2, an automatic pressure adjustment device based on centrifugal force was fabricated. A large number of pressure sensors were attached between the contact surfaces of the welded cylindrical body 1 and the pressure homogenizing ball 6. The pressure sensors were evenly distributed along the circumferential and axial directions. Then, the device was operated according to the method of this invention, and the pressure sensor values ​​were read. It was found that the error between the maximum and minimum pressure sensor values ​​did not exceed 8%, indicating that when using this invention to inspect the weld of the welded cylindrical body 1, the pressure on the inner wall of the welded cylindrical body 1 is uniform and consistent, and the detection of weld strength is scientifically reasonable, proving the effectiveness of this invention.

Claims

1. A device for automatically adjusting extrusion pressure via centrifugal force, comprising a welded cylindrical body (1), characterized in that, The welded cylindrical body (1) is installed inside the rotating support frame (2). The rotating support frame (2) is a rotating body and can rotate around its axis of rotation. The rotating support frame (2) includes a central shaft (201), which is coaxially arranged at the center of the welded cylindrical body (1). An end cap (202) is installed at each of the two axial ends of the central shaft (201), and the two axial ends of the welded cylindrical body (1) are respectively clamped in the two end caps (202). The sealed space enclosed by the two end caps (202), the welded cylindrical body (1) and the central shaft (201) is a centrifugal cavity (3). The centrifuge chamber (3) is filled with multiple adjusting balls (4). Under the action of centrifugal force, the multiple adjusting balls (4) can be arranged into a cylindrical automatic adjusting layer. The axial ends of the automatic adjusting layer are in close contact with the two end caps (202). A cylindrical buffer layer (5) is coaxially arranged in the centrifuge chamber (3) outside the automatic adjusting layer. The axial ends of the buffer layer (5) are in close contact with the two end caps (202). The radial inner side of the buffer layer (5) is in close contact with the adjusting balls on the radial outer side of the automatic adjusting layer. (4) Close contact; the centrifugal cavity (3) between the buffer layer (5) and the welded cylindrical body (1) is filled with multiple extrusion pressure homogenizing balls (6). The multiple extrusion pressure homogenizing balls (6) are arranged in a cylindrical structure of extrusion pressure homogenizing layer. The two ends of the extrusion pressure homogenizing layer are in close contact with the two end caps (202) respectively. The radial inner side of the extrusion pressure homogenizing layer is in close contact with the radial inner side of the buffer layer (5). The radial outer side of the extrusion pressure homogenizing layer is in close contact with the radial inner side of the welded cylindrical body (1).

2. The device for automatically adjusting extrusion pressure by centrifugal force as described in claim 1, characterized in that, The diameter of the regulating ball (4) is 10mm to 12mm.

3. The device for automatically adjusting extrusion pressure by centrifugal force as described in claim 2, characterized in that, The ratio of the diameter of the extrusion pressure homogenizing ball (6) to the diameter of the adjusting ball (4) is 1:(8-10).

4. The device for automatically adjusting extrusion pressure by centrifugal force as described in claim 1, characterized in that, The extrusion pressure homogenization layer consists of eight layers of extrusion pressure homogenization microspheres (6) from the inside out.

5. The device for automatically adjusting extrusion pressure by centrifugal force as described in claim 1, characterized in that, A pressure sensor is provided on the radial inner side of the welded cylindrical body (1), and the pressure sensor is located between the welded cylindrical body (1) and the extrusion pressure homogenizing ball (6).

6. The device for automatically adjusting extrusion pressure by centrifugal force as described in claim 1, characterized in that, The material of the buffer layer (5) is rubber.

7. The device for automatically adjusting extrusion pressure by centrifugal force as described in claim 1, characterized in that, The number of the regulating balls (4) is 300 to 350.

8. The device for automatically adjusting extrusion pressure by centrifugal force as described in claim 7, characterized in that, The ratio of the number of the pressure homogenizing balls (6) to the number of the adjusting balls (4) is 1:0.001 to 0.0014.

9. The device for automatically adjusting extrusion pressure by centrifugal force as described in claim 1, characterized in that, The material of the regulating ball (4) is tungsten alloy; the material of the extrusion pressure homogenizing ball (6) is polytetrafluoroethylene.

10. The device for automatically adjusting extrusion pressure by centrifugal force as described in claim 1, characterized in that, The method of using the centrifugal force automatic adjustment extrusion pressure device includes the following process: After the device has been rotating stably for ten minutes, remove each component, take out the welded cylindrical body (1), measure the diameter of the welded cylindrical body (1), and measure ten points at equal intervals along the axial direction. If there is a change in the size compared with the size before the experiment, it indicates that the weld has deformed and the strength is insufficient to meet the requirements of the warhead. If the size is consistent with the size before the experiment, it indicates that the weld has not deformed and the strength is sufficient to meet the requirements of the warhead.

Images