Preparation method of composite bulletproof plate for protecting against large-caliber shells

Abstract

The present invention discloses a method for preparing a composite bulletproof plate for resisting large-caliber artillery shells, which belongs to the technical field of bulletproof plate preparation, including S1, processing boron carbide ceramic blocks, S2, laying TC4 metal powder, S3, laying boron carbide ceramic blocks, S4, filling TC4 metal powder, S5, preparing the bulletproof plate, wherein the pressure vacuum furnace comprises a furnace body and a slide rail, the bottom end of the furnace body is fixedly connected to a movable plate, the bottom end of the movable plate is equipped with casters, the slide rails are symmetrically arranged, the bottom end of the slide rails is fixedly connected to a guide seat, the inner sliding connection of the slide rails is connected to a slider, the bottom end of the slide rails is provided with a movable groove, the bottom end of the slider is fixedly connected to a connecting rod, and one end of the connecting rod passing through the movable groove is fixedly connected to a second straight tooth plate. The present invention composites the boron carbide ceramic block with metal so that the boron carbide ceramic block has both the toughness of metal and the hardness of ceramic, thereby ensuring that the bulletproof plate can withstand the shooting of ultra-high-speed large-caliber bullets.

Description

Technical Field

[0001] The present invention relates to the technical field of bulletproof plate preparation, and in particular to a method for preparing a composite bulletproof plate for protecting against large-caliber shells. Background Art

[0002] Bulletproof plates are widely used in bulletproof armor, such as the protection of vehicles and ships, as well as the protection of civilian safes and armored trucks. Bulletproof plates are mainly made of boron carbide ceramics, which have light specific gravity and high hardness, and can reduce the weight of the protective plates.

[0003] However, boron carbide ceramics are very brittle, which makes the bulletproof plates produced from them very brittle, resulting in the bulletproof plates being not very effective in resisting ultra-high-speed, large-caliber bullets.

[0004] In addition, the existing vacuum furnaces used for the manufacture of bulletproof panels are inconvenient to install and lack stability, which affects the manufacturing efficiency of the bulletproof panels. Some materials and dust often remain on the inner wall of the furnace, affecting the manufacturing purity of the bulletproof panels. Therefore, a composite bulletproof panel that can withstand large-caliber artillery shells is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the prior art and to propose a method for preparing a composite bulletproof plate for protecting against large-caliber shells.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A method for preparing a composite bulletproof plate for protecting against large-caliber projectiles comprises the following steps:

[0008] S1. Processing a boron carbide ceramic block: Select a cubic boron carbide ceramic block with a side length of 100 mm, and design the top end surface of the boron carbide ceramic block into an inclined surface with an inclination angle of 45°;

[0009] S2. Laying TC4 metal powder: Select a high-strength graphite mold with a size of 420-425mm in width and 550-580mm in length, and spread the TC4 metal powder on the inside of the high-strength graphite mold with a thickness of 5-6mm;

[0010] S3. Laying boron carbide ceramic blocks: Arrange the processed boron carbide ceramic blocks on the metal powder in sequence, with the higher side of the boron carbide ceramic blocks on the left and the lower side on the right, keeping the row spacing at 2-4 mm, and ensuring that there are 4-5 boron carbide ceramic blocks in each row and 5-6 boron carbide ceramic blocks in each column;

[0011] S4. Filling TC4 metal powder: Evenly fill the TC4 metal powder into the gaps between the boron carbide ceramic blocks and the gaps between the boron carbide ceramic blocks and the inner wall of the high-strength graphite mold, so that the top plane of the TC4 metal powder is 2-3 mm higher than the top of the boron carbide ceramic block;

[0012] S5. Preparation of bulletproof plate: Place the high-strength graphite mold in a pressure vacuum furnace, adjust the pressure to 40-70 MPa, and adjust the temperature to 700-800°C to make the powder dense and slowly soften it, so that it is composited into one body to form a bulletproof plate;

[0013] The pressure vacuum furnace includes a furnace body and a slide rail, the bottom end of the furnace body is fixedly connected to a movable plate, the bottom end of the movable plate is installed with a caster, the slide rails are symmetrically arranged, the bottom end of the slide rails is fixedly connected to a guide seat, the inside of the slide rails is slidably connected to a slider, the bottom end of the slide rails is provided with a movable through groove, the bottom end of the slider is fixedly connected to a connecting rod, one end of the connecting rod passing through the movable through groove is fixedly connected to a second straight tooth plate, one side of the guide seat is fixedly connected to a guide plate, and a linkage assembly is provided below the slide rail.

[0014] Preferably, the linkage assembly includes a linkage gear slidably connected to the first spur plate and meshed between the first spur plate and the second spur plate.

[0015] Preferably, a push plate is fixedly connected to one side surface of the first spur plate, a linkage shaft is fixedly connected between the linkage gears, and one end of the linkage gear is fixedly connected to a guide rod.

[0016] Preferably, a support plate is slidably connected to the guide rod, a clamping block is fixedly connected to the top end of the support plate, and a side of the clamping block facing the push plate is an inclined surface.

[0017] Preferably, a socket is provided at the top of the clamping block, a limit plate is provided above the clamping block, a pin is fixedly connected to the bottom end of the limit plate, and the pin is plugged into the socket.

[0018] Preferably, a sealing door is hinged at one end of the furnace body, a partition plate is fixedly connected to the inner wall of the furnace body, a rotating hole is opened on the partition plate, and the partition plate is made of heat-insulating material.

[0019] Preferably, a driving motor is installed on the inner wall of the furnace body, an output end of the driving motor is fixedly connected to an output shaft, and one end of the output shaft passing through the rotating hole is fixedly connected to a plurality of fan blades.

[0020] Preferably, one end of the fan blade is fixedly connected to a scrub brush, and the bristles on the surface of the scrub brush fit into the inner wall of the furnace body.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention composites boron carbide ceramic blocks with metals, so that the boron carbide ceramic blocks have both the toughness of metal and the hardness of ceramics, thereby ensuring that the bulletproof plate can withstand the shooting of ultra-high-speed large-caliber bullets.

[0023] 2. The present invention is provided with a clamping block, a slide rail, a slider, a linkage assembly and a clamping block. When the movable plate drives the furnace body to move onto the slide rail, the clamping block automatically realizes the clamping and fixing function of the furnace body, thereby facilitating the installation of the furnace body.

[0024] 3. The present invention is equipped with a driving motor, a fan blade and a brush, which can automatically clean the inner wall of the furnace body. At the same time, the fan blade generates wind force to blow the cleaned dust out of the furnace body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a process flow chart of the method for preparing the composite bulletproof plate for protecting against large-caliber artillery shells proposed by the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the boron carbide ceramic blocks laid inside the mold in the method for preparing the composite bulletproof plate for protecting against large-caliber artillery shells proposed by the present invention;

[0027] Figure 3 This is a schematic diagram of combining metal powder and boron carbide ceramic blocks in the method for preparing a composite bulletproof plate for protecting against large-caliber projectiles proposed by the present invention;

[0028] Figure 4 Schematic diagram of the three-dimensional structure of the pressure vacuum furnace in the preparation method of the composite bulletproof plate for large-caliber artillery shells proposed by the present invention Figure 1 ;

[0029] Figure 5 Schematic diagram of the three-dimensional structure of the pressure vacuum furnace in the preparation method of the composite bulletproof plate for large-caliber artillery shells proposed by the present invention Figure 2 ;

[0030] Figure 6 Schematic diagram of the three-dimensional structure of the pressure vacuum furnace in the preparation method of the composite bulletproof plate for large-caliber artillery shells proposed by the present invention Figure 3 ;

[0031] Figure 7 This is a schematic diagram of the internal structure of the furnace body in the method for preparing a composite bulletproof plate for protecting against large-caliber artillery shells proposed by the present invention.

[0032] In the figure: 1. furnace body; 2. sealing door; 3. clamping block; 4. pushing plate; 5. slide rail; 6. first spur plate; 7. linkage gear; 8. second spur plate; 9. guide seat; 10. moving plate; 11. slider; 12. limit plate; 13. guide rod; 14. support plate; 15. guide plate; 16. plate brush; 17. fan blade plate; 18. drive motor; 19. caster. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] Reference Figure 1-3 A method for preparing a composite bulletproof plate for protecting against large-caliber shells comprises the following steps:

[0035] S1. Processing a boron carbide ceramic block: Select a cubic boron carbide ceramic block with a side length of 100 mm, and design the top end surface of the boron carbide ceramic block into an inclined surface with an inclination angle of 45°;

[0036] S2. Laying TC4 metal powder: Select a high-strength graphite mold with a size of 420-425mm in width and 550-580mm in length, and spread the TC4 metal powder on the inside of the high-strength graphite mold with a thickness of 5-6mm;

[0037] S3. Laying boron carbide ceramic blocks: Arrange the processed boron carbide ceramic blocks on the metal powder in sequence, with the higher side of the boron carbide ceramic blocks on the left and the lower side on the right, keeping the row spacing at 2-4 mm, and ensuring that there are 4-5 boron carbide ceramic blocks in each row and 5-6 boron carbide ceramic blocks in each column;

[0038] S4. Filling TC4 metal powder: Evenly fill the TC4 metal powder into the gaps between the boron carbide ceramic blocks and the gaps between the boron carbide ceramic blocks and the inner wall of the high-strength graphite mold, so that the top plane of the TC4 metal powder is 2-3 mm higher than the top of the boron carbide ceramic block;

[0039] S5. Preparation of bulletproof plate: Place the high-strength graphite mold in a pressure vacuum furnace, adjust the pressure to 40-70 MPa, and adjust the temperature to 700-800°C to make the powder dense and slowly soften it, so that it is composited into one body to form a bulletproof plate;

[0040] Please refer to Figure 4-7The pressure vacuum furnace includes a furnace body 1 and a slide rail 5. The bottom end of the furnace body 1 is fixedly connected to a movable plate 10, and the bottom end of the movable plate 10 is installed with casters 19. The movable plate 10 facilitates the movement of the furnace body 1, and the slide rail 5 is symmetrically arranged. The slide rail 5 facilitates the installation of the furnace body 1. The bottom end of the slide rail 5 is fixedly connected to a guide seat 9. The guide seat 9 facilitates the movement of the casters 19 to the inside of the slide rail 5. The inside of the slide rail 5 is slidably connected with a slider 11, and the slider 11 moves along the slide rail 5 under the pushing action of the casters 19, and at the same time drives the second straight tooth plate 8 to move. A moving through groove is provided at the bottom end of the slide rail 5, and the bottom end of the slider 11 is fixedly connected with a connecting rod. One end of the connecting rod passes through the moving through groove and is fixedly connected to the second straight tooth plate 8. A guide plate 15 is fixedly connected to one side of the guide seat 9. A linkage component is provided under the slide rail 5, and the linkage component can enable the second straight tooth plate 8 to drive the clamping block 3 to realize the clamping and fixing function of the furnace body 1.

[0041] The linkage assembly includes a linkage gear 7 slidably connected to the first spur plate 6 and meshed between the first spur plate 6 and a second spur plate 8 .

[0042] A further benefit is that the linkage gear 7 can enable the second spur plate 8 to drive the first spur plate 6 to move.

[0043] A push plate 4 is fixedly connected to one side surface of the first spur plate 6 , a linkage shaft is fixedly connected between the linkage gears 7 , and a guide rod 13 is fixedly connected to one end of the linkage gear 7 .

[0044] Further benefits are achieved: the push plate 4 will squeeze the inclined surface of the clamping block 3 during movement, thereby enabling the clamping block 3 to clamp and fix the furnace body 1, and the guide rod 13 can support the movement of the clamping block 3.

[0045] A support plate 14 is slidably connected to the guide rod 13 , and a clamping block 3 is fixedly connected to the top end of the support plate 14 . The side of the clamping block 3 facing the push plate 4 is an inclined surface.

[0046] Further benefits are achieved: the support plate 14 can support the clamping block 3 , and a universal wheel is provided at the bottom end of the support plate 14 to facilitate the movement of the clamping block 3 .

[0047] A socket is provided at the top of the clamping block 3 , a limit plate 12 is provided above the clamping block 3 , a latch is fixedly connected to the bottom end of the limit plate 12 , and the latch is plugged into the socket.

[0048] A further benefit is that the limiting plate 12 can limit the clamping block 3 and ensure the stability of the clamping block 3 in clamping the furnace body 1 .

[0049] A sealed door 2 is hinged at one end of the furnace body 1 , and a partition plate is fixedly connected to the inner wall of the furnace body 1 . The partition plate is provided with a rotation hole and is made of a heat-insulating material.

[0050] A further benefit is that the partition plate made of heat-insulating material can prevent the temperature inside the furnace body 1 from affecting the operation of the drive motor 18.

[0051] A driving motor 18 is installed on the inner wall of the furnace body 1, and the output end of the driving motor 18 is fixedly connected to an output shaft. One end of the output shaft passing through the rotating hole is fixedly connected to a plurality of fan blades 17, and one end of the fan blade 17 is fixedly connected to a scrub brush 16. The bristles on the surface of the scrub brush 16 fit into the inner wall of the furnace body 1.

[0052] Further benefits are achieved: the fan blade 17 rotates under the drive of the drive motor 18, which can drive the brush 16 to rotate, thereby cleaning the residual materials and dust on the inner wall of the furnace body 1. The wind force generated by the fan blade 17 can blow the cleaned dust and materials out of the furnace body 1.

[0053] The driving motor 18 is of existing technology, and its model is KYDAS96300-1 E. It can realize the function of driving the output shaft to rotate, and will not be described in detail here.

[0054] When the present invention is used, a cubic boron carbide ceramic block with a side length of 100 mm is selected, and the top end face of the boron carbide ceramic block is designed to be an inclined surface with an inclination angle of 45 degrees. Then, a high-strength graphite mold with a size of 420-425 mm in width and 550-580 mm in length is selected, and TC4 metal powder is spread flatly inside the high-strength graphite mold with a thickness of 5-6 mm. Then, the processed boron carbide ceramic blocks are arranged on the metal powder in sequence, so that the high side of the boron carbide ceramic block is on the left and the low side is on the right, and the row spacing is kept at 2-4 mm. Ensure that there are 4-5 boron carbide ceramic blocks in each row and 5-6 boron carbide ceramic blocks in each column. Then, TC4 metal powder is evenly filled into the gaps between the boron carbide ceramic blocks and the gaps between the boron carbide ceramic blocks and the inner wall of the high-strength graphite mold. Make sure that the top plane of the TC4 metal powder is 2-3mm higher than the top of the boron carbide ceramic block. Finally, place the high-strength graphite mold in a pressure vacuum furnace, adjust the pressure to 40-70MPa, and adjust the temperature to 700-800℃ to make the powder dense and slowly soften, so that it is composited into one to form a bulletproof plate.

[0055] By pushing the movable plate 10, the furnace body 1 is driven to move. Under the action of the guide seat 9, the caster 19 moves into the slide rail 5. During the movement of the caster 19, the slider 11 is pushed to move. The slider 11 drives the second spur plate 8 to move. The second spur plate 8 drives the linkage gear 7 to rotate, and then drives the first spur plate 6 to move, so that the first spur plate 6 drives the pushing plate 4 to move. The pushing plate 4 will push the clamping block 3, so that the clamping block 3 can realize the clamping and fixing function of the furnace body 1, and then the pin on the limit plate 12 is plugged into the socket to ensure the stability of the clamping block 3 in clamping and fixing the furnace body 1.

[0056] When the bulletproof plate is manufactured, the sealing door 2 is opened and the drive motor 18 is turned on. The drive motor 18 drives the fan blade 17 to rotate, and then drives the brush 16 to rotate. The brush 16 can clean the inner wall of the furnace body 1. At the same time, the fan blade 17 generates wind force, which can blow dust and materials out of the furnace body 1, making it convenient for the next use of the furnace body 1.

[0057] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A vacuum furnace for preparing composite bulletproof plates for large-caliber artillery shells, characterized in that: The invention comprises a furnace body (1) and a slide rail (5), wherein the bottom end of the furnace body (1) is fixedly connected to a movable plate (10), the bottom end of the movable plate (10) is provided with a caster (19), the slide rail (5) is symmetrically arranged, the bottom end of the slide rail (5) is fixedly connected to a guide seat (9), the interior of the slide rail (5) is slidably connected to a slider (11), the bottom end of the slide rail (5) is provided with a movable through slot, the bottom end of the slider (11) is fixedly connected to a connecting rod, one end of the connecting rod passing through the movable through slot is fixedly connected to a second straight tooth plate (8), one side of the guide seat (9) is fixedly connected to a guide plate (15), and a linkage assembly is provided below the slide rail (5); The linkage assembly comprises a linkage gear (7) slidably connected to the first spur plate (6) and meshed between the first spur plate (6) and the second spur plate (8); A push plate (4) is fixedly connected to one side of the first spur plate (6), a linkage shaft is fixedly connected between the linkage gears (7), and a guide rod (13) is fixedly connected to one end of the linkage gear (7); A support plate (14) is slidably connected to the guide rod (13), a clamping block (3) is fixedly connected to the top end of the support plate (14), and a side of the clamping block (3) facing the push plate (4) is an inclined surface; A sealing door (2) is hingedly connected to one end of the furnace body (1), and a partition plate is fixedly connected to the inner wall of the furnace body (1), wherein a rotation hole is provided on the partition plate, and the partition plate is made of a heat-insulating material; A driving motor (18) is installed on the inner wall of the furnace body (1), an output end of the driving motor (18) is fixedly connected to an output shaft, and one end of the output shaft passing through the rotating hole is fixedly connected to a plurality of fan blades (17).

2. The vacuum furnace for preparing composite bulletproof plates for protection against large-caliber artillery shells according to claim 1, characterized in that: A socket is provided at the top of the clamping block (3), a limit plate (12) is provided above the clamping block (3), and a latch is fixedly connected to the bottom end of the limit plate (12), and the latch is plugged into the socket.

3. The vacuum furnace for preparing composite bulletproof plates for protection against large-caliber artillery shells according to claim 1, characterized in that: One end of the fan blade (17) is fixedly connected to a scrub brush (16), and the bristles on the surface of the scrub brush (16) are in contact with the inner wall of the furnace body (1).

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