CN219522464U - Die-filling die for boron carbide bulletproof chest plate - Google Patents
Die-filling die for boron carbide bulletproof chest plate Download PDFInfo
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- CN219522464U CN219522464U CN202320624670.5U CN202320624670U CN219522464U CN 219522464 U CN219522464 U CN 219522464U CN 202320624670 U CN202320624670 U CN 202320624670U CN 219522464 U CN219522464 U CN 219522464U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model provides a die-filling die for a boron carbide bulletproof chest plate, which comprises a graphite guard plate, wherein a graphite jacket is sleeved on the peripheral wall of the graphite guard plate, the graphite guard plate comprises four plates, the plates are seamlessly spliced to form a hollow die cavity, the cross section of the hollow die cavity is matched with the outline of the chest plate, the hollow die cavity is used for accommodating at least one layer of raw material plate, and the chest plate is formed by profiling the raw material plate. The utility model adopts the high-strength graphite jacket, and because of the excellent physical properties such as bending resistance, compression resistance and the like, the product is easy to shape under the high-temperature pressurized production condition, the problems of the size and the curved surface deformation of the boron carbide chest plate are effectively solved, and the four plates are spliced to form the hollow die cavity, so that the assembly and the demoulding are easy.
Description
Technical Field
The utility model belongs to the technical field of chest plate profiling, relates to improvement of a die-filling die of a chest plate, and particularly relates to a die-filling die of a boron carbide bulletproof chest plate.
Background
A remarkable characteristic of boron carbide ceramic is very hard, its microhardness is about 50GPa, which is just inferior to diamond (90-100 GPa) and cubic boron nitride (80-90 GPa), its grinding efficiency can be up to 60% -70% of diamond, 1 time of SiC, 1-2 times of corundum grinding capability, acid and alkali resistance is good, thermal expansion coefficient is small (4.5X10) -6 At the temperature), so that the glass has better thermal stability, can absorb thermal neutrons, but has poor shock resistance and large brittleness.
The bulletproof ceramic material mainly comprises boron carbide (B) 4 C) Silicon carbide (SiC) and aluminum oxide (Al 2 O 3 ) Three of which B 4 The weight of C is the lightest, the specific modulus is high, the ballistic performance is good, and the bulletproof ceramic material with the best comprehensive performance is obtained. At present, the preparation is carried out by adopting a hot-pressing sintering method, and the cost and the price are quite high. Just because of the high price, B 4 The C bulletproof ceramic is only applied to high-end protection markets, such as protection systems of equipment of helicopters, submarines, assaults, fighters and the like. The boron carbide ceramic has the advantages of good performance, light weight, large protection area and the like, can effectively prevent penetration of the warheads of the firearms above class III, avoids or obviously reduces non-penetrating damage caused by the impact of the human body, is commonly used in the field of human body protection, and is the optimal material for manufacturing bulletproof vests and bulletproof helmets.
The mould method is a method commonly used in the preparation of ceramic products, and particularly for the preparation of products with specific shapes, the mould is also required correspondingly. Ceramic products are commonly prepared by a hot pressing method, and generally comprise the steps of powder mixing, die filling, hot pressing, machining and the like, wherein the die filling process is a key factor for determining the shape of the product, and directly determines the sintering quality of the ceramic product and the yield of machining. Therefore, if the same mold structure is adopted for products with different shapes, the applicability is often poor, and the raw materials are wasted.
CN101774808A provides a preparation method of a boron carbide double-radian bulletproof plate, which comprises the following steps: (1) Selecting and mixing materials, taking boron carbide as a raw material, and uniformly mixing and stirring the raw material and an adhesive; (2) Shaping, namely slowly feeding the stirred mixture into a leather pressing machine for repeatedly pressing, and slowly adjusting a gap between the pair of rollers to continuously and repeatedly press the mixture when the mixture is sheet-shaped and has certain toughness to form a chest plate blank, wherein the thickness of the chest plate blank is 3 mm; (3) Sintering, namely sintering the pressed chest plate blank to obtain a finished product.
CN111072392a discloses a method for producing a ring-shaped ceramic product, said method comprising the steps of: mixing raw material components and then carrying out cold press molding to obtain a cold press piece matched with the size of a finished product, wherein the cold press piece at least comprises a circular center area and an edge area; and filling the cold pressing piece into a hot pressing mold, separating different partition areas of the same cold pressing piece by carbon paper, performing hot pressing sintering, and performing machining to obtain the annular ceramic product. The hot pressing mold comprises a graphite hot pressing mold, a mold cavity of the hot pressing mold is filled with at least one layer of cold pressing piece, each layer of cold pressing piece comprises at least one cold pressing piece, the cold pressing pieces of different layers, the adjacent cold pressing pieces of the same layer and the dividing areas of the same cold pressing piece are all separated by carbon paper, and the carbon paper comprises graphite paper.
CN109109142a discloses a graphite mold for hot-pressed sintering of AlON transparent ceramics, which comprises a mold main body and a base, wherein the mold main body comprises a cavity positioned at the center, and the cavity of the mold is provided with taper; the upper part and the lower part of the die main body are respectively provided with a step part, and the upper part of the base is provided with a boss part corresponding to the step part; the graphite mold has the advantages that the graphite mold is also of an integral cavity structure, only a single filling space is provided, and the defects of irregular shape of the edge product of the existing cavity and more leftover material products still exist.
The chest plate is easy to deform in the hot-pressing sintering process, the size of the curved surface direction is not well controlled, and if the product is heated unevenly in the die, the density gradient also exists, so that the die is required to be improved to solve the problems of easy deformation and uneven density.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model aims to provide the die-filling die for the boron carbide bulletproof chest plate, which effectively solves the problems of the size and the curved surface deformation of the boron carbide chest plate, avoids the expansion of the die in the high-temperature pressurizing process, enhances the heat radiation and ensures the more uniform density of the product.
To achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a die-filling die of a boron carbide bulletproof chest plate, which comprises a graphite guard plate, wherein a graphite jacket is sleeved on the peripheral wall of the graphite guard plate, the graphite guard plate comprises four plates, the plates are seamlessly spliced to form a hollow die cavity, the cross section of the hollow die cavity is matched with the outline of the chest plate, the hollow die cavity is used for accommodating at least one layer of raw material plate, and the chest plate is formed by profiling the raw material plate.
The die-filling die of the boron carbide bulletproof chest plate adopts the high-strength graphite jacket, and the product is easy to shape under the high-temperature pressurized production condition due to the excellent physical properties such as bending resistance, compression resistance and the like, so that the problems of the size and the curved surface deformation of the boron carbide chest plate are effectively solved; the four plates are spliced to form a hollow die cavity, so that the assembly and the demoulding are easy.
It should be noted that, CFC carbon jackets adopted in the prior art are easy to expand and become large under the high-temperature and high-pressure production condition, which can lead to uncontrollable chest plate product size, while high-strength graphite jackets, due to their excellent physical properties such as bending resistance, compression resistance, etc., are easy to shape and difficult to deform in size under the high-temperature and high-pressure production condition.
As a preferable technical scheme of the utility model, the surfaces of the plates are provided with a plurality of through holes, the aperture of the through holes is 15-20 mm, for example, 15mm, 16mm, 17mm, 18mm, 19mm or 20mm, but the utility model is not limited to the listed numerical values, and other non-listed numerical values in the numerical range are applicable.
In the utility model, through holes are arranged on the graphite guard plate, so that the heat radiation is enhanced, the uniform density of the boron carbide chest plate product is ensured, and the chest plate is formed.
As a preferable technical scheme of the utility model, the appearance of the graphite guard plate is of a hollow cylindrical structure, and the graphite outer sleeve and the graphite guard plate are coaxially arranged at the same bottom.
As a preferable technical scheme of the utility model, a buffer layer is arranged between the graphite outer sleeve and the graphite guard plate.
As a preferable technical scheme of the utility model, the buffer layer is graphite paper.
In the utility model, the graphite paper buffer layer is arranged between the graphite outer sleeve and the graphite guard plate, so that the expansion of the graphite guard plate in the high-temperature pressurizing process can be avoided, the stress is applied to the high-strength graphite outer sleeve, and the service life of the graphite outer sleeve is effectively prolonged.
Preferably, the raw material plate is a boron carbide cold-pressing piece, boron carbide granules are prepared by uniformly mixing boron carbide powder, an aqueous solution of a binder and the like and then by a spray granulation technology, and the boron carbide chest plate cold-pressing piece is pressed under high pressure in a cold state, wherein the boron carbide powder, the binder and the content thereof are all materials and technologies disclosed in the prior art in the preparation process. According to the utility model, four plates are seamlessly spliced to form a hollow cylindrical graphite guard plate, a hollow die cavity is arranged in the middle, and the cross section of the hollow die cavity is matched with the outline of the chest plate.
As a preferable technical scheme of the utility model, the die-filling die further comprises a tray, wherein the tray is arranged at the bottom of the graphite outer sleeve and is used for supporting the graphite outer sleeve.
As a preferable technical scheme of the utility model, the tray is a graphite tray.
As a preferable technical scheme of the utility model, at least one layer of graphite cushion block is also arranged in the hollow die cavity, and the raw material plates and the graphite cushion blocks are alternately stacked.
As a preferable technical scheme of the utility model, a graphite cushion block is arranged at the bottom of an inner cavity of the hollow die cavity, the raw material plates and the graphite cushion block are alternately filled into the hollow die cavity, and the raw material plates are arranged at the top of the inner cavity of the hollow die cavity.
In the utility model, when a layer of raw material plate is placed in the hollow die cavity, a layer of graphite cushion block is placed at the bottoms of the raw material plate and the graphite guard plate, and when at least two layers of raw material plates are placed in the hollow die cavity, the graphite cushion block and the raw material plate are placed at intervals, and a layer of graphite cushion block is arranged between two adjacent raw material plates, so that the surface of the raw material plate is kept balanced in stress in the pressurizing process. The graphite cushion block is of a curved surface structure, and the bending degree of the boron carbide breast plate is determined by the curved surface of the graphite cushion block.
As a preferable technical scheme of the utility model, the die-filling die further comprises a graphite pressing head, wherein the graphite pressing head is arranged on the raw material plate at the top of the inner cavity of the hollow die cavity and is used for pressing and forming the raw material plate.
In order to help the person skilled in the art to better understand the overall technical scheme and working process of the utility model, the utility model provides the following preparation method of the boron carbide bulletproof chest plate, which specifically comprises the following steps:
(1) The four plates are spliced seamlessly to form a hollow cylindrical graphite guard board, a hollow die cavity is arranged in the middle of the hollow cylindrical graphite guard board, and the cross section of the hollow die cavity is matched with the outer contour of the chest plate;
(2) The four plates are respectively perforated, so that heat generated in the furnace can be more quickly diffused to the product in the sintering process, and the condition that the density of the product is gradient due to uneven temperature in the die is avoided;
(3) The graphite paper buffer layer and the graphite jacket are sleeved on the peripheral wall of the graphite guard plate in sequence, so that the expansion deformation of the graphite guard plate in the high-temperature pressurizing process is avoided;
(4) Alternately placing the raw material plates and the graphite cushion blocks in a hollow die cavity, arranging a layer of graphite cushion blocks between two adjacent raw material plates, keeping the surface of the raw material plates to be stressed uniformly in the pressurizing process, and finally placing the graphite press blocks on the outermost raw material plates for pressing, wherein the pressing pressure is 15-45 MPa;
(5) And (3) putting the die-filling die with the raw material plates into a heating furnace by adopting a tray, sintering in an argon atmosphere at the temperature of 1950-2100 ℃, cooling, taking down a graphite jacket, and sequentially separating four plates to obtain the boron carbide bulletproof chest plate, wherein the thickness of the boron carbide bulletproof chest plate is 6-11 mm.
When the sintering temperature is too high, the graphite jacket expands and becomes large, so that the size of the raw material plate of the boron carbide chest plate is uncontrollable, deformation is easy to occur, and when the sintering temperature is too low, the raw material plate is not easy to shape, and the product quality is reduced.
Compared with the prior art, the utility model has the beneficial effects that:
the die-filling die for the boron carbide bulletproof chest plate adopts the high-strength graphite jacket, and the product is easy to shape under the high-temperature pressurized production condition due to the excellent physical properties such as bending resistance, compression resistance and the like, so that the problems of the size and the curved surface deformation of the boron carbide chest plate are effectively solved; the buffer layer is arranged between the graphite outer sleeve and the graphite guard plate, so that the expansion of the graphite guard plate in the high-temperature pressurizing process is avoided, stress is applied to the high-strength graphite outer sleeve, and the service life of the graphite outer sleeve is effectively prolonged by arranging the graphite paper buffer layer; the four plates are spliced to form a hollow die cavity, so that the assembly and the demoulding are easy; through holes are formed in the graphite guard plate, heat radiation is enhanced, and the density of the boron carbide chest plate product is ensured to be more uniform.
Drawings
Fig. 1 is a top view of a mold die for a boron carbide chest armor plate according to one embodiment of the present utility model;
fig. 2 is a schematic structural view of a mold for molding a boron carbide chest armor plate according to an embodiment of the present utility model.
Wherein, 1-graphite coat; 2-graphite guard plates; 3-a hollow mold cavity; 4-a buffer layer; 5-through holes; 6-a tray; 7-a raw material plate; 8-graphite cushion blocks; 9-graphite indenter.
Detailed Description
It is to be understood that in the description of the present utility model, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus are not to be construed as limiting the present utility model.
The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.
In a specific embodiment, the utility model provides a die-filling die for a boron carbide bulletproof chest plate, which is shown in fig. 1, and comprises a graphite guard plate 2, wherein a graphite outer sleeve 1 is sleeved on the peripheral wall of the graphite guard plate 2, and the graphite outer sleeve 1 and the graphite guard plate 2 are coaxially and commonly arranged. The graphite outer sleeve 1 has excellent physical properties such as bending resistance, compression resistance and the like, and can avoid the problems of size and curved surface deformation of the raw material plate 7 in the compression molding process. The buffer layer 4 is arranged between the graphite outer sleeve 1 and the graphite guard plate 2, so that the expansion of the graphite guard plate 2 in the high-temperature pressurizing process can be avoided.
The graphite guard plate 2 comprises four plates, the four plates are spliced seamlessly to form a hollow die cavity 3, the cross section of the hollow die cavity 3 is matched with the outline of the chest plate, and at least one layer of raw material plate 7 is placed in the hollow die cavity 3 and is pressed to form the chest plate. The graphite guard plate 2 has a hollow cylindrical structure in appearance. Through holes 5 for enhancing heat radiation are formed in the surface of each plate, the aperture of each through hole 5 is 15-20 mm, the uniformity of the density of the boron carbide chest plate product is guaranteed, and the chest plate forming is facilitated. As shown in fig. 2, the bottom of the graphite shield 2 is also provided with a tray 6 for support.
The raw material plate 7 is a boron carbide cold pressing piece, as shown in fig. 2, at least one layer of raw material plate 7 and at least one graphite cushion block 8 are arranged in the hollow die cavity 3, the raw material plate 7 is matched with the structure of the graphite cushion block 8, and the raw material plate 7 and the graphite cushion block 8 are alternately laminated in the hollow die cavity 3. The bottom of the hollow die cavity 3 is provided with a graphite cushion block 8, the raw material plates 7 and the graphite cushion block 8 are alternately filled into the hollow die cavity 3, and the top of the hollow die cavity 3 is provided with the raw material plates 7. After the hollow die cavity 3 is filled with the raw material plate 7, a graphite pressing head 9 is arranged on the raw material plate 7 positioned at the top of the hollow die cavity 3 and used for pressing and forming the raw material plate 7.
In another embodiment, the utility model provides a method for preparing a boron carbide bulletproof chest plate, which comprises the steps of adopting a die-filling die provided by one embodiment to fill and press a raw material plate, sintering the filled raw material plate, and then stripping the die to obtain the boron carbide bulletproof chest plate, and specifically comprises the following steps:
(1) The four plates are spliced seamlessly to form a hollow cylindrical graphite guard board, a hollow die cavity is arranged in the middle of the hollow cylindrical graphite guard board, and the cross section of the hollow die cavity is matched with the outer contour of the chest plate;
(2) The four plates are respectively perforated, so that heat generated in the furnace can be more quickly diffused to the product in the sintering process, and the condition that the density of the product is gradient due to uneven temperature in the die is avoided;
(3) The graphite paper buffer layer and the graphite jacket are sleeved on the peripheral wall of the graphite guard plate in sequence, so that the expansion deformation of the graphite guard plate in the high-temperature pressurizing process is avoided;
(4) Alternately placing the raw material plates and the graphite cushion blocks in a hollow die cavity, arranging a layer of graphite cushion blocks between two adjacent raw material plates, keeping the surface of the raw material plates to be stressed uniformly in the pressurizing process, and finally placing the graphite press blocks on the outermost raw material plates for pressing, wherein the pressing pressure is 15-45 MPa;
(5) And (3) putting the die-filling die with the raw material plates into a heating furnace by adopting a tray, sintering in nitrogen and/or neon atmosphere at the temperature of 1950-2100 ℃, cooling, taking down a graphite jacket, and sequentially separating the four plates to obtain the boron carbide bulletproof chest plate.
Example 1
The preparation of the boron carbide bulletproof chest plate is carried out by adopting a die-filling die of the boron carbide bulletproof chest plate, and specifically comprises the following steps:
(1) The four plates are spliced seamlessly to form a hollow cylindrical graphite guard board, a hollow die cavity is arranged in the middle of the hollow cylindrical graphite guard board, and the cross section of the hollow die cavity is matched with the outer contour of the chest plate;
(2) The four plates are respectively perforated, so that heat generated in the furnace can be more quickly diffused to the product in the sintering process, and the condition that the density of the product is gradient due to uneven temperature in the die is avoided;
(3) The graphite paper buffer layer and the graphite jacket are sleeved on the peripheral wall of the graphite guard plate in sequence, so that the expansion deformation of the graphite guard plate in the high-temperature pressurizing process is avoided;
(4) Alternately placing raw material plates and graphite cushion blocks in a hollow die cavity, placing six raw material plates in total, arranging a layer of graphite cushion block between two adjacent raw material plates, keeping the surface of the raw material plates to be stressed uniformly in the pressurizing process, and finally placing a graphite briquetting on the outermost raw material plate for pressing, wherein the pressing pressure is 30MPa;
(5) And (3) putting the die-filling die with the raw material plates into a heating furnace by adopting a tray, sintering in an argon atmosphere at the temperature of 1950 ℃, cooling, taking down a graphite jacket, and separating four plates in sequence to obtain the boron carbide bulletproof chest plate.
Example 2
The present example uses a die-filling mold for the boron carbide chest plate to prepare the boron carbide chest plate, and differs from example 1 in that: the pressure of the pressing in the preparation step (4) is 15MPa; the heating temperature in the heating furnace in step (5) was 2000℃and the remaining operating conditions and process parameters were exactly the same as in example 1.
Example 3
The present example uses a die-filling mold for the boron carbide chest plate to prepare the boron carbide chest plate, and differs from example 1 in that: the pressure of the pressing in the preparation step (4) is 18MPa; the heating temperature in the heating furnace in step (5) was 2050 ℃, and the remaining operating conditions and process parameters were exactly the same as in example 1.
Example 4
The present example uses a die-filling mold for the boron carbide chest plate to prepare the boron carbide chest plate, and differs from example 1 in that: the pressure of the pressing in the preparation step (4) is 40MPa; the heating temperature in the heating furnace in step (5) was 1950 ℃, and the remaining operating conditions and process parameters were exactly the same as in example 1.
Example 5
The present example uses a die-filling mold for the boron carbide chest plate to prepare the boron carbide chest plate, and differs from example 1 in that: the pressure of the pressing in the preparation step (4) is 44MPa; the heating temperature in the heating furnace in step (5) was 2100℃and the remaining operating conditions and process parameters were exactly the same as in example 1.
Comparative example 1
The comparative example uses a die-filling die for the preparation of boron carbide bulletproof chest plates, and differs from example 1 in that: in the step (2), no punching treatment was performed, and the remaining operation conditions and process parameters were exactly the same as in example 1.
Comparative example 2
The comparative example uses a die-filling die for the preparation of boron carbide bulletproof chest plates, and differs from example 1 in that: the graphite jacket used in step (3) was a CFC carbon jacket and the remaining operating conditions and process parameters were exactly the same as in example 1.
Performance test:
(1) All boron carbide chest plates prepared in examples 1 to 5 and comparative examples 1 to 2 were removed in the present utility model, and whether the curved surfaces of the boron carbide chest plates were deformed was observed, and the results are shown in table 1.
(2) In the utility model, all boron carbide chest plates prepared in examples 1 to 5 and comparative examples 1 to 2 were removed, and the surface density of each boron carbide chest plate was measured, specifically:
the areal density of the boron carbide breast plate was measured using an areal density tester, calculated to obtain an average, and the relative standard deviation was calculated using a relative standard formula, with the results shown in table 1.
(3) After the chest plate is prepared, the graphite jackets of examples 1 to 5 and comparative example 1 and the CFC carbon jacket of comparative example 2 are taken for expansion multiple detection, and the results are shown in Table 1.
TABLE 1
The boron carbide chest plates prepared in examples 1 to 5 of the utility model have uniform sizes, no deformation, complete shaping of all raw material plates, uniform surface density of each boron carbide chest plate, and no expansion of graphite jackets used in the preparation of the boron carbide chest plates.
The boron carbide chest plate obtained in comparative example 1 has higher surface density deviation than that of the boron carbide chest plate in example 1, because the graphite jacket used in the mode provided in comparative example 1 is not perforated, so that the raw material plate is heated unevenly in the die, and a density gradient occurs.
The expansion coefficient of the CFC carbon jacket used in comparative example 2 of the present utility model is higher than the sheet expansion coefficient of the graphite jacket 1 of example 1, resulting in low molding rate of the boron carbide breast plate and deformation of the boron carbide breast plate, mainly because the graphite jacket 1 is easy to shape and difficult to deform under the high-temperature pressurized production condition due to its excellent physical properties such as bending resistance, compression resistance, etc., compared with the CFC carbon jacket.
According to the die-filling die for the boron carbide bulletproof chest plate, the high-strength graphite outer sleeve 1 is adopted, and due to excellent physical properties such as bending resistance and compression resistance, the product is easy to shape under the high-temperature pressurized production condition, and the problems of the size and the curved surface deformation of the boron carbide chest plate are effectively solved; the buffer layer 4 is arranged between the graphite outer sleeve 1 and the graphite guard plate 2, so that the expansion of the graphite guard plate 2 in the high-temperature pressurizing process is avoided, stress is applied to the high-strength graphite outer sleeve 1, and the service life of the graphite outer sleeve 1 is effectively prolonged by arranging the graphite paper buffer layer 4; the four plates are spliced to form a hollow die cavity 3, so that the assembly and the demoulding are easy; through holes 5 are formed in the graphite guard plate 2, heat radiation is enhanced, and the density of the boron carbide chest plate product is ensured to be more uniform.
The applicant declares that the above is only a specific embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and it should be apparent to those skilled in the art that any changes or substitutions that are easily conceivable within the technical scope of the present utility model disclosed by the present utility model fall within the scope of the present utility model and the disclosure.
Claims (10)
1. The die-filling die for the boron carbide bulletproof chest plate is characterized by comprising a graphite guard plate, wherein a graphite jacket is sleeved on the peripheral wall of the graphite guard plate, the graphite guard plate comprises four plates, the plates are seamlessly spliced to form a hollow die cavity, the cross section of the hollow die cavity is matched with the outline of the chest plate, the hollow die cavity is used for accommodating at least one layer of raw material plate, and the chest plate is formed after the raw material plate is pressed.
2. The die-filling die for the boron carbide bulletproof chest plate according to claim 1, wherein the surfaces of the plates are provided with a plurality of through holes, and the aperture of each through hole is 15-20 mm.
3. The mold die for boron carbide chest armor according to claim 1, wherein the graphite guard plate has a hollow cylindrical configuration and the graphite jacket is co-axially co-bottomed with the graphite guard plate.
4. The mold die for boron carbide chest armor according to claim 1, wherein a buffer layer is disposed between the graphite jacket and the graphite shield.
5. The mold for boron carbide chest armor according to claim 4, wherein the buffer layer is graphite paper.
6. The die set of claim 1, wherein the die set of boron carbide chest plates further comprises a tray disposed at the bottom of the graphite jacket, the tray being configured to support the graphite jacket.
7. The mold for boron carbide chest armor according to claim 6, wherein the tray is a graphite tray.
8. The die-filling die for the boron carbide bulletproof chest plate according to claim 1, wherein at least one layer of graphite cushion blocks are further arranged in the hollow die cavity, and the raw material plates and the graphite cushion blocks are alternately stacked.
9. The die-filling die for the boron carbide bulletproof chest plate according to claim 8, wherein a graphite cushion block is arranged at the bottom of the inner cavity of the hollow die cavity, the raw material plates and the graphite cushion block are alternately filled into the hollow die cavity, and the raw material plates are arranged at the top of the inner cavity of the hollow die cavity.
10. The die set for the boron carbide chest piece of claim 9, further comprising a graphite indenter disposed on the raw sheet material at the top of the cavity of the hollow die cavity, the graphite indenter being configured to press the raw sheet material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320624670.5U CN219522464U (en) | 2023-03-27 | 2023-03-27 | Die-filling die for boron carbide bulletproof chest plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320624670.5U CN219522464U (en) | 2023-03-27 | 2023-03-27 | Die-filling die for boron carbide bulletproof chest plate |
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| Publication Number | Publication Date |
|---|---|
| CN219522464U true CN219522464U (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320624670.5U Active CN219522464U (en) | 2023-03-27 | 2023-03-27 | Die-filling die for boron carbide bulletproof chest plate |
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| CN (1) | CN219522464U (en) |
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- 2023-03-27 CN CN202320624670.5U patent/CN219522464U/en active Active
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