Composite armor manufacturing method

Abstract

The invention discloses a composite armor manufacturing method, and belongs to the technical field of composite armor manufacturing, and the composite armor manufacturing method comprises the following steps: S1, providing a substrate made of a first material, processing a prefabricated hole in the surface of the substrate, S2, filling the prefabricated hole with a filler made of a second material, and forming a gap between the upper surface of the filler and the upper surface of the substrate after filling; and S3, depositing a third material on the substrate by using the friction stir additive device so as to seal the prefabricated hole. Therefore, according to the manufacturing method, continuous feeding of materials is achieved, the deposition speed is high, the packaging efficiency is high, the stability and the flexibility are high, an interlocking structure is formed after packaging, and the packaging strength is high.

Description

Technical Field

[0001] The invention belongs to the technical field of composite armor manufacturing, and in particular, relates to a composite armor manufacturing method. Background Art

[0002] The ceramic-metal composite structure armor has extremely high penetration resistance and protection capabilities, and can effectively protect the vehicle's occupants and components from projectile impact. The honeycomb array structure steel plate filled with ceramic particles can effectively erode and deflect the incident projectile, while improving the armor's ability to withstand secondary and multiple strikes. When preparing this armor structure, it is necessary to process honeycomb array prefabricated holes in the steel plate, then insert the ceramics, and finally encapsulate it.

[0003] The current mainstream packaging method uses cast steel or steel cover plate welding, but the above packaging method increases the overall weight of the armor, which is not in line with the development trend of lightweight weapons and equipment, and has low processing efficiency, which is not conducive to the large-scale engineering promotion and application of composite armor. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a method for manufacturing a composite armor.

[0005] A composite armor manufacturing method according to an embodiment of the present invention includes the following steps: S1: providing a substrate made of a first material, and processing a prefabricated hole on a surface of the substrate; S2: filling the prefabricated hole with a filler made of a second material, and after filling, there is a gap between the upper surface of the filler and the upper surface of the substrate; S3: using a stir friction additive device to deposit a third material on the substrate to close the prefabricated hole.

[0006] Therefore, the manufacturing method of the present invention realizes continuous feeding of materials, fast deposition speed, high packaging efficiency, high stability and flexibility, and forms an interlocking structure after packaging, with high packaging strength.

[0007] According to the composite armor manufacturing method of the embodiment of the present invention, S3 includes rubbing the additive raw material with the substrate to deposit the third material on the substrate.

[0008] According to the composite armor manufacturing method of the embodiment of the present invention, S3 includes: depositing the third material with a deposition thickness greater than the gap.

[0009] According to the composite armor manufacturing method of the embodiment of the present invention, the distance from the highest point of the deposited third material to the substrate is L1, which satisfies: 0.1mm≤L1≤4mm.

[0010] According to the composite armor manufacturing method of the embodiment of the present invention, the gap height is L2, which satisfies: 1mm≤L2≤6mm.

[0011] According to the composite armor manufacturing method of the embodiment of the present invention, there are multiple prefabricated holes, and the multiple prefabricated holes are evenly spaced and arranged.

[0012] According to the composite armor manufacturing method of the embodiment of the present invention, the distance between the edges of two adjacent prefabricated holes is L3, which satisfies: 1mm≤L3≤20mm.

[0013] According to the composite armor manufacturing method of the embodiment of the present invention, the diameter of the prefabricated hole is D, and the hole depth is H, which satisfies: 1mm≤D≤20mm, 1mm≤H≤40mm.

[0014] According to the composite armor manufacturing method of the embodiment of the present invention, the first material and the third material are different metal materials.

[0015] According to the composite armor manufacturing method of an embodiment of the present invention, the first material is steel, the second material is ceramic, and the third material is aluminum or an aluminum alloy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 A schematic diagram of a process for manufacturing a composite armor according to an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of deposition according to an embodiment of the present invention;

[0019] Figure 3 is a schematic structural diagram of a cross section of a substrate according to an embodiment of the present invention;

[0020] Figure 4 A schematic structural diagram of a cross section of a substrate after deposition is completed according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic structural diagram of a cross-section of a friction stir additive device according to an embodiment of the present invention.

[0022] Reference numerals:

[0023] Stir friction additive device 100, additive component 11, clamping section 111, transition section 112, cutting section 113, stirring needle 1131, spiral groove 1132,

[0024] Static shoulder 12, feed hole 121,

[0025] Additive raw material 20,

[0026] Base plate 30, prefabricated hole 31,

[0027] Filling 40,

[0028] A layer 50 is deposited. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "length", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] Please refer to the following manual Figure 1-5 A method for manufacturing a composite armor according to an embodiment of the present invention is described.

[0032] The composite armor manufacturing method according to the embodiment of the present invention realizes continuous feeding of materials, fast deposition speed, high packaging efficiency, high stability and flexibility, and forms an interlocking structure after packaging with high packaging strength.

[0033] Specifically, Figure 1 A schematic diagram of the process of manufacturing the composite armor provided in an embodiment of the present application.

[0034] like Figure 1 and Figure 2 As shown, the composite armor manufacturing method includes the following steps:

[0035] S1: providing a substrate 30 made of a first material, and processing a prefabricated hole 31 on a surface of the substrate 30,

[0036] In some embodiments, as shown in the attached Figure 2 As shown, the substrate 30 is a rectangular plate, and a plurality of prefabricated holes 31 are formed on the upper surface of the substrate 30. The prefabricated holes 31 do not penetrate the substrate 30. The prefabricated holes 31 may be circular holes, honeycomb holes, etc. The plurality of prefabricated holes 31 are arranged in an array.

[0037] S2: filling the prefabricated hole 31 with a filler 40 made of a second material, and after the filling, there is a gap between the upper surface of the filler 40 and the upper surface of the substrate 30;

[0038] In some embodiments, as shown in the attached Figure 3 As shown, a filler 40 is filled into the prefabricated hole 31 . The filler 40 is in the form of particles or blocks. After the filling is completed, the upper surface of the filler 40 is lower than the upper surface of the substrate 30 , so that there is a gap between the upper surface of the filler 40 and the upper surface of the substrate 30 .

[0039] S3: using the friction stir additive device 100 to deposit a third material on the substrate 30 to close the prefabricated holes 31 .

[0040] In some embodiments, as shown in the attached Figure 2 and 4 As shown, the additive raw material 20 is added to the friction stir additive device 100 , the friction stir additive device 100 is started, and the third material is deposited on the substrate 30 to form a deposition layer 50 , and the deposition layer 50 closes the prefabricated holes 31 and covers the upper surface of the substrate 30 .

[0041] Therefore, the manufacturing method of the embodiment of the present application realizes continuous feeding of materials, fast deposition speed, high packaging efficiency, high stability and flexibility, and forms an interlocking structure after packaging, with high packaging strength.

[0042] In the embodiment of the present application, step S3 includes rubbing the additive raw material 20 with the substrate 30 to deposit a third material on the substrate 30 .

[0043] As attached Figure 2 , 3 As shown in FIG4 , before deposition, an additive raw material 20 is added to the friction stir additive device 100. During the deposition process, the friction stir additive device 100 is started, so that the additive raw material 20 contacts the substrate 30. The additive raw material 20 is subjected to axial force and rotates. The additive raw material 20 and the substrate 30 generate friction stirs so that the additive raw material 20 is plasticized for deposition.

[0044] As a result, the added additive raw material 20 is plasticized under the dual effects of friction heating and plastic deformation heat, which can simplify the process flow when preparing composite armor, improve production efficiency, and increase packaging strength.

[0045] In the embodiment of the present application, step S3 includes: depositing the third material with a deposition thickness greater than the gap in step S2.

[0046] As attached Figure 3 and 4As shown, when the third material is deposited, the third material is plasticized and flows and penetrates into the preformed hole 31, forming a rivet-like structure to close the preformed hole 31. After the deposition is completed, the thickness of the deposited layer 50 is greater than the gap, and the deposited layer 50 encapsulates the preformed hole 31 and covers the upper surface of the substrate 30. Therefore, the deposited layer 50 forms a rivet-like structure to encapsulate the preformed hole 31, thereby improving the encapsulation strength, simplifying the process flow, and improving production efficiency.

[0047] In the embodiment of the present application, the distance from the highest point of the deposition layer 50 to the substrate 30 is L1, which satisfies: 0.1 mm ≤ L1 ≤ 4 mm.

[0048] As attached Figure 4 As shown, the distance from the upper surface of the deposition layer 50 to the upper surface of the substrate 30 is 0.1 mm ≤ L1 ≤ 4 mm. Thus, the deposition layer 50 is formed to encapsulate the prefabricated holes 31 on the substrate 30, thereby improving the encapsulation strength, simplifying the process flow, and improving production efficiency.

[0049] In the embodiment of the present application, the gap height is L2, satisfying: 1mm≤L2≤6mm.

[0050] As attached Figure 3 As shown, after filling is completed, the upper surface of the filler 40 is lower than the upper surface of the substrate 30, so that there is a gap between the upper surface of the filler 40 and the upper surface of the substrate 30, and the gap height is L2, satisfying: 1mm≤L2≤6mm.

[0051] Therefore, the third material can be deposited after flowing into the gap to package the prefabricated hole 31, thereby improving the packaging strength, simplifying the process flow, and improving the production efficiency.

[0052] It is understandable that after deposition is completed, at the prefabricated hole 31, there is a gap between the filler 40 and the upper surface of the substrate 30 after filling the prefabricated hole 31, and the deposition layer 50 also needs to fill this gap, resulting in the thickness of the deposition layer 50 at this point being slightly greater than L1.

[0053] In the embodiment of the present application, there are multiple prefabricated holes 31, and the multiple prefabricated holes 31 are evenly spaced and arranged.

[0054] As attached Figure 2 As shown, there are multiple preformed holes 31, and the preformed holes 31 are circular holes, and the multiple circular holes are arranged in an array.

[0055] Thus, the multiple prefabricated holes 31 are arranged evenly, thereby improving the strength after packaging.

[0056] In other embodiments, the prefabricated holes 31 may be honeycomb holes, and a plurality of honeycomb holes may be arranged in an array.

[0057] In the embodiment of the present application, the distance between the edges of two adjacent prefabricated holes 31 is L3, which satisfies: 1mm≤L3≤20mm.

[0058] As attached Figure 3 As shown, there are multiple prefabricated holes 31, and the distance between two adjacent prefabricated holes 31 is L3, which satisfies: 1mm≤L3≤20mm.

[0059] As a result, the plurality of prefabricated holes 31 are evenly spaced and arranged, thereby improving the strength after packaging.

[0060] In the embodiment of the present application, the diameter of the prefabricated hole 31 is D, and the depth of the hole is H, which satisfies: 1mm≤D≤20mm, 1mm≤H≤40mm.

[0061] As shown in the accompanying drawings, the diameter of a single preformed hole 31 is 1mm-20mm, and the depth of the preformed hole 31 is 1mm-40mm. Therefore, during deposition, the deposition layer 50 can encapsulate the preformed hole 31, thereby improving the packaging strength, simplifying the process flow, and improving production efficiency.

[0062] In the existing technology, direct casting or welding of steel cover plates will increase the overall weight of the armor, which is not in line with the development trend of lightweight weapons and equipment; and the processing efficiency is low, which is not conducive to large-scale engineering applications. Aluminum alloy has low density and high specific strength. Using aluminum alloy instead of steel as packaging material can effectively reduce the weight of composite armor structure and meet the dual requirements of armor structure performance and lightweight design.

[0063] However, conventional aluminum / steel welding is difficult. A large amount of brittle and hard intermetallic compounds are easily produced at the aluminum-steel interface in the molten state, and there is a large welding residual stress, which directly affects the performance of the armor.

[0064] In the embodiment of the present application, the first material and the third material are different metal materials.

[0065] As attached Figure 2 As shown, the substrate 30 is a first material, the deposition layer 50 is a third material, and the first material and the third material are different metal materials, for example, the first material is steel, and the third material is aluminum. Thus, aluminum / steel friction stir additive deposition manufacturing is achieved, and the aluminum / steel composite armor meets the requirements of armor structure performance and lightweight, and during the preparation process, the process flow is simple and the production efficiency is high.

[0066] In the embodiment of the present application, the first material is steel, the second material is ceramic, and the third material is aluminum or aluminum alloy.

[0067] As attached Figure 2 and 3As shown, the substrate 30 is a first material, the filler 40 is a second material, and the deposition layer 50 is a third material. The first material is steel, the second material is ceramic, and the third material is aluminum or an aluminum alloy. The ceramic is filled into the prefabricated hole 31 of the steel plate, and then aluminum or an aluminum alloy is used for deposition packaging to prepare a composite armor. The obtained composite armor packaging has high strength, a simple preparation process, and high production efficiency.

[0068] The following describes the composite armor manufacturing method in a specific embodiment of the present invention in conjunction with the accompanying drawings. The embodiments of the present invention can be all embodiments after combining the above-mentioned multiple technical solutions, but are not limited to the following specific embodiments, which all fall within the protection scope of the present invention.

[0069] Example 1

[0070] As attached Figure 1 and 5 As shown, the friction stir additive device includes an additive component 11 and a static shoulder 12, the static shoulder 12 is arranged on the outer surface of the additive component 11, the additive component 11 serves as a welding tool, the additive component 11 is a vertically extending shaft, the additive component 11 includes a clamping section 111, a transition section 112 and a stirring needle 1131 connected in sequence from top to bottom, the stirring needle 1131 is formed with a spiral groove 1132 on the outer peripheral wall, the spiral groove 1132 is used to cut the additive raw material 20, and a feed hole 121 is provided at the corresponding position of the static shoulder 12 and the spiral groove 1132, the feed hole 121 penetrates the static shoulder 12, so that the additive raw material 20 can extend into the additive component 11 and be cut.

[0071] S1: Provide a rectangular steel plate as a substrate 30, and process prefabricated holes 31 on the upper surface of the steel plate. The prefabricated holes 31 are circular holes. There are multiple prefabricated holes 31, and the multiple prefabricated holes 31 are arranged in an array. The diameter of the prefabricated holes 31 is D, which satisfies 1mm≤D≤20mm, and the hole depth is H, which satisfies 1mm≤H≤40mm. The distance between two adjacent prefabricated holes 31 is L3, which satisfies 1mm≤L3≤20mm.

[0072] S2: Fill the prefabricated hole 31 with ceramic, which may be ceramic particles or ceramic blocks. After the filling is completed, there is a gap between the upper surface of the filler 40 and the upper surface of the substrate 30. The gap height is L2, which satisfies 1mm≤L2≤6mm.

[0073] S3: Adding additive raw material 20 to the feed hole 121 of the friction stir additive device 100, the additive raw material 20 is aluminum or aluminum alloy wire, the wire diameter ranges from 0.2 mm to 4.0 mm, and the wire feeding speed ranges from 0.5 m / min to 50 m / min,

[0074] The friction stir additive device 100 is started, the rotation speed range of the additive component 11 is 50rpm-3000rpm, there is a gap between the additive component 11 and the substrate 30, and the gap is the thickness of the deposition layer 50. The wire is fed into the additive component 11 and cut into particles by the spiral groove 1132. The particles are transmitted downward along the spiral groove 1132, and the particles are in contact with the substrate 30. Under the dual effects of friction and plastic deformation heat, the particles are plasticized into a solid fluid and deposited on the steel plate. The additive component 11 and the static shoulder 12 move synchronously along a preset path, and the travel speed range is 10mm / min-2m / min, forming a deposition layer 50 to close the prefabricated hole 31. The distance from the highest point of the deposition layer 50 to the substrate 30 is L1, which satisfies: 0.1mm≤L1≤4mm.

[0075] This preparation method realizes continuous feeding of materials, fast deposition speed, high packaging efficiency, high stability and flexibility, and forms an interlocking structure after packaging with high packaging strength.

[0076] Example 2

[0077] On the basis of Example 1, a stirring needle 1131 protruding downward is formed at the lower end of the cutting segment 113 . During the deposition process, the stirring needle 1131 penetrates into the substrate 30 , and the stirring needle 1131 stirs and rubs with the substrate 30 .

[0078] Example 3

[0079] Different from Example 1, Example 3 uses deposition-type friction stir additive manufacturing (AFSD), and the added additive raw material 20 is a rod.

[0080] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0081] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A method for manufacturing a composite armor, It is characterized in that Includes steps: S1: providing a substrate made of a first material, and processing prefabricated holes on the surface of the substrate; S2: filling a filler made of a second material into the prefabricated hole, wherein a gap exists between an upper surface of the filler and an upper surface of the substrate after the filling; S3: depositing a third material on the substrate using a friction stir additive device to close the prefabricated holes.

2. The method for manufacturing composite armor according to claim 1, It is characterized in that The step S3 includes rubbing the additive raw material against the substrate to deposit the third material on the substrate.

3. The method for manufacturing composite armor according to claim 1, It is characterized in that The S3 includes: depositing the third material to a thickness greater than the gap.

4. The method for manufacturing composite armor according to claim 3, It is characterized in that The distance from the highest point of the deposited third material to the substrate is L1, which satisfies: 0.1 mm≤L1≤4 mm.

5. The method for manufacturing composite armor according to claim 1, It is characterized in that The gap height is L2, which satisfies: 1mm≤L2≤6mm.

6. The method for manufacturing composite armor according to claim 1, It is characterized in that There are a plurality of prefabricated holes, and the plurality of prefabricated holes are evenly spaced and arranged.

7. The method for manufacturing composite armor according to claim 6, It is characterized in that The distance between the edges of two adjacent prefabricated holes is L3, which satisfies: 1mm≤L3≤20mm.

8. The method for manufacturing composite armor according to claim 1, It is characterized in that The prefabricated hole has a diameter of D and a depth of H, which satisfy the following conditions: 1mm≤D≤20mm, 1mm≤H≤40mm.

9. The method for manufacturing composite armor according to claim 1, It is characterized in that The first material and the third material are different metal materials.

10. The method for manufacturing a composite armor according to any one of claims 1 to 9, It is characterized in that The first material is steel, the second material is ceramic, and the third material is aluminum or aluminum alloy.

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