Preparation device of composite double / multi-metal shaped charge liner as well as use method and application of composite double / multi-metal shaped charge liner

Abstract

The invention provides a preparation device of a composite double / multi-metal shaped charge liner. The preparation device comprises a protective cover, a shell, a fixing ring, a detonating piece, explosive, a cavity, a base, a first momentum block and a second momentum block. Wherein the protective cover and the shell are made of plastic materials and are used for containing explosives; the upper part of the base is matched with a to-be-welded metal shaped charge liner in shape; the first momentum block and the second momentum block are used for consuming residual kinetic energy generated by explosion; the fixing ring is used for fixing the base, the first momentum block, the second momentum block and the shell. The invention further provides a using method of the preparation device. According to the manufacturing method, manufacturing of the double-metal shaped charge liner and the multi-metal shaped charge liner is achieved in an explosive welding mode, the bonding strength between all layers of metal is improved, the manufactured composite double-metal shaped charge liner and the multi-metal shaped charge liner can play the combined penetration damage effect of kinetic energy and chemical reaction, and compared with a common single-layer shaped charge liner, the composite double-metal shaped charge liner and the multi-metal shaped charge liner have the advantages that the cost is low; and the penetration depth and the aftereffect effect of the formed energy-gathered metal jet flow on the armored target are greatly enhanced.

Description

Technical Field

[0001] The present invention belongs to the technical field of warhead, shaped charge blasting and efficient destruction, and specifically relates to a preparation device of a composite double / multi-metal charge liner and a method of using the same, and also relates to a composite double / multi-metal charge liner prepared based on the preparation device. Background Art

[0002] The metal liner is a key component of the shaped charge structure. It mainly uses the shaped energy effect after the cone charge explodes to crush the metal liner, forming a high-temperature, high-speed, high-energy-density, small-diameter shaped metal jet or explosively formed projectile to penetrate the armored target. In the military field, it is widely used in anti-tank armor-piercing warheads, armor-piercing and killing submunitions warheads, terminal-sensitive bullet warheads, and anti-helicopter intelligent mine warheads; in the civilian field, it is widely used in oil perforating bullets and shaped cutting devices. At present, according to the different properties of the target of the shaped charge, it can be divided into metal targets (homogeneous steel armor, depleted uranium armor, composite armor, etc.) and non-metallic targets (concrete, rock, etc.). In the damage and destruction of various targets, the material, structure, and performance of the metal liner in the shaped charge structure play a decisive role in the damage and destruction.

[0003] At present, in order to develop shaped charge structures with better performance, stronger penetration capability and better aftereffect damage effect, domestic and foreign scholars have conducted a lot of exploration and research on the shape, structure and material of the liner. In terms of the shape of the liner, domestic and foreign scholars have proposed the use of conical, trumpet-shaped, spherical, and hyperbolic liner; in terms of the structure of the liner, domestic and foreign scholars have proposed the use of equal wall thickness, variable wall thickness, and double-layer metal liner; in terms of the material of the liner, domestic and foreign scholars have proposed the use of copper alloy, tungsten alloy, uranium alloy, titanium alloy, aluminum alloy, energetic metal powder and other materials. In the research of composite double-layer or multi-layer metal liner, two or more single-layer metal liner of different materials are mainly stacked together. Studies have shown that the composite metal liner shaped charge structure of different materials can improve the penetration depth and enhance the aftereffect to a certain extent.

[0004] In some existing studies, the preparation of composite metal liners is usually to mix different metal powders and then press them into shape, which has the disadvantages of low mechanical strength and difficult to control the wall thickness of the liner; in other studies, the combination of metal liners of different materials is achieved by superimposing metal liners of different materials, but how to improve the bonding strength between metals of different materials is still a difficulty in the preparation process. The patent with publication number CN117444532A discloses a method for preparing a multilayer liner by explosive welding and spinning. The patent first performs explosive welding on metal sheets of different materials, and then uses a spinning process to extrude the sheet into the shape of the liner. However, this preparation method has a significant problem: the composite metal sheet after explosive welding needs to be extruded into the shape of the liner through a secondary spinning process. The composite metal liner prepared by this process is difficult to ensure the uniformity of the microstructure inside the liner, that is, the micro-corrugations formed by the explosive welding between different metals are difficult to control in the process of spinning the welded metal sheet into the metal liner.

[0005] Based on this, a preparation device and a method for using a composite double / multi-metal liner are provided, which achieve high-quality bonding of metals of different materials in a safe and controllable explosion welding manner, shorten the production cycle, and improve production efficiency. This is of great significance for preparing a composite double / multi-metal liner that can significantly enhance the destructive capability of the shaped charge structure, and is also a technical problem that needs to be solved urgently. Summary of the invention

[0006] One of the purposes of the present invention is to provide a device for preparing a composite double / multi-metal charge liner which can achieve high-quality bonding of metals of different materials in a safe and controllable explosion welding manner, shorten the production cycle, and improve production efficiency.

[0007] The second object of the present invention is to provide a method for using a device for preparing a composite double / multi-metal charge cap that can achieve high-quality bonding of metals of different materials in a safe and controllable explosion welding manner, shorten the production cycle, and improve production efficiency.

[0008] The third object of the present invention is to provide a composite double / multi-metal charge liner with high bonding strength between metal layers and capable of exerting the combined penetration and damage effect of kinetic energy and chemical reaction.

[0009] The technical solution adopted by the present invention to achieve one of the objectives is: to provide a preparation device for a composite double / multi-metal charge liner, the preparation device externally comprising from top to bottom: a protective cover, a shell and a fixing ring; the preparation device internally comprising from top to bottom: a detonating element, an explosive, a cavity, a base, a first momentum block and a second momentum block; The protective cover and shell are wrapped around the outside of the explosive and are made of plastic material; one end of the detonator extends out of the top of the protective cover, and the other end is connected to the explosive; the fixing ring is arranged around the outside of the shell, the base, the first momentum block and the second momentum block; the cavity is used to accommodate the metal charge cap to be welded; the shapes of the cavity, the base, the explosive and the protective cover all match the shape of the metal charge cap to be welded.

[0010] In the present invention, in order to solve the problems of loose bonding, difficult to control explosive welding energy, and complex preparation process in the preparation process of conventional composite metal charge caps, a preparation device for composite double / multi-metal charge caps is provided. The device adopts a top-down detonation method, uses a detonating piece to detonate the explosive, and uses the energy generated by the explosion of the explosive to drive the metal charge caps to be welded in the cavity to collide and combine with each other at high speed, thereby generating a welding phenomenon. In order to ensure the safe and efficient explosive welding, the present invention sets a protective cover and a shell made of plastic material on the outside of the explosive to avoid the generation of metal fragments with greater lethality during the explosion; further, the present invention sequentially sets a base, a first momentum block, and a second momentum block under the metal charge cap to be welded, and uses a fixing ring to constrain and fix the above structure. During the explosive welding process, the multi-layered momentum blocks can better eliminate the residual kinetic energy generated by the explosion, thereby ensuring the safety of the explosive welding process.

[0011] Furthermore, the material of the protective cover and the shell includes PVC pipe and / or nylon. The protective cover and the shell are used to contain explosives. The protective cover and the shell formed by plastic material are safer. The fragments generated after being destroyed during the explosive welding process are less lethal than metal fragments, and are easy to protect, thereby improving the safety of the preparation process.

[0012] Furthermore, the detonating element includes a detonator or a detonating cord. Preferably, the detonating element adopts a detonating cord, which has a smaller output energy than the detonator, and can avoid the damage to the liner structure during the detonation process and reduce the occurrence of deformation.

[0013] Furthermore, the explosive includes ammonium nitrate explosive, which has the characteristics of low detonation velocity and small power, and is a welding energy source with better adaptability to the preparation device provided by the present invention. Specifically, the charge amount of the explosive is adjusted according to the wall thickness and material of the charge liner, and the gap between each charge liner, or ammonium nitrate explosive with different detonation velocities is selected.

[0014] Furthermore, the shape of the protective cover is similar to that of the metal liner to be welded, and accordingly, the charge shape of the explosive is consistent with that of the metal liner to be welded, thereby ensuring that each part of the liner is evenly stressed during the preparation process to prevent deformation.

[0015] Furthermore, the fixing ring is in a ring shape and is formed by turning of stainless steel, and is used to fix the base, the first momentum block and the second momentum block.

[0016] Further, the base, the first momentum block and the second momentum block are all made of metal materials. Preferably, the base is made of steel, and the top shape of the base matches the metal liner to be welded, ensuring that the two can be tightly combined, so that the metal liner to be welded can better maintain the desired shape after explosion welding.

[0017] Further, the material of the first momentum block and the second momentum block includes stainless steel. Preferably, the first momentum block and the second momentum block are both cylindrical, formed by stainless steel turning, placed under the base of the preparation device, mainly used to consume residual kinetic energy, and have a thickness of 8-12 mm respectively.

[0018] The technical solution adopted by the present invention to achieve the second purpose is: to provide a method for using the preparation device of the composite double / multi-metal liner according to one of the purposes of the present invention, comprising the following steps: S1. Complete the assembly of the second momentum block, the first momentum block, the fixing ring, the base, the shell, the metal liner to be welded, and the protective cover in the order from bottom to top and from inside to outside; S2, load the explosives from the top of the protective cover, vibrate, compact, and then install the detonating parts; S3, detonating the detonating component and then detonating the explosive. After the explosive is detonated, it drives the metal charge liner to be welded to collide at high speed, causing welding to occur, and obtaining a composite double / multi-metal charge liner.

[0019] Furthermore, the number of the metal charge liners to be welded is not less than two, and they are placed in the cavity in a stacked manner, with welding gaps being left between adjacent metal charge liners to be welded.

[0020] Furthermore, the metal of the metal liner to be welded is selected from at least two of copper, titanium, aluminum, magnesium, nickel, tungsten alloy, and uranium alloy. Preferably, the metal liner to be welded disposed above the cavity and in contact with the explosive is made of a metal that is prone to combustion and explosion after high-speed impact, such as aluminum.

[0021] Furthermore, the shape of the metal liner to be welded includes a combination of one or more of a cone, a spherical segment, and a trumpet shape; the wall thickness of the metal liner to be welded is set to a uniform wall thickness or a variable wall thickness.

[0022] Furthermore, the base matches the shape of the metal liner to be welded arranged at the bottom of the cavity, and an isolating agent is provided between the base and the metal liner to be welded, and the isolating agent can prevent the lower metal liner to be welded from welding with the base during the preparation process. Preferably, the isolating agent is vaseline.

[0023] Furthermore, step S3 also includes: trimming the composite dual / multi-metal liner, fine-tuning the local deformation during the welding process, and removing burrs.

[0024] The technical solution adopted by the present invention to achieve the third purpose is: to provide a composite double / multi-metal liner, which is manufactured by the preparation device according to one of the purposes of the present invention or the use method according to the second purpose of the present invention.

[0025] The metal layers of the composite double / multi-metal drug liner prepared by the present invention are tightly combined with each other and microscopic ripples exist on the interface.

[0026] In some preferred embodiments, the composite double / multi-metal liner is a double-layer structure, wherein the inner liner is made of metal copper and the outer liner is made of metal aluminum.

[0027] In some preferred embodiments, the composite dual / multi-metal drug liner is a three-layer structure, wherein the inner layer is made of metal copper, the middle layer is made of metal titanium or nickel, and the outer layer is made of metal aluminum.

[0028] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention provides a preparation device for a composite double / multi-metal charge cap, which adopts a top-down detonation method, detonates the explosive through a detonating piece, and uses the energy generated by the explosion of the explosive to drive the metal charge caps to be welded in the cavity to collide and combine with each other at high speed, thereby producing a welding phenomenon. The protective cover and shell made of plastic material arranged on the outside of the explosive avoid the generation of metal fragments with high lethality during the explosion; a base, a first momentum block and a second momentum block are arranged in sequence under the metal charge cap to be welded, and the above structures are constrained and fixed by a fixing ring. During the explosive welding process, the multi-layered momentum blocks can better eliminate the residual kinetic energy generated by the explosion, ensuring the safety of the explosive welding process.

[0029] (2) The present invention provides a device for preparing a composite double / multi-metal liner. During use, metal liners of different materials are directly combined by explosive welding. Subsequently, only simple trimming is required to complete the preparation of the composite double / multi-metal liner. No secondary spinning process is required, which simplifies the preparation process and improves production efficiency.

[0030] (3) The composite double / multi-metal liner produced by the present invention uses explosive welding to combine metals of different materials, which significantly improves the bonding strength between the layers of metal. This composite double / multi-metal liner can exert the combined penetration and damage effect of kinetic energy and chemical reaction. Compared with ordinary single-layer liner, the penetration depth and aftereffect of the shaped metal jet formed by it on the armored target are greatly enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the structure of a device for preparing a conical bimetallic liner provided in Example 1 of the present invention; Figure 2 This is a schematic structural diagram of a conical bimetallic liner prepared in Example 1 of the present invention; Figure 3 A schematic diagram of the structure of a device for preparing a conical tri-metal liner provided in Example 2 of the present invention; Figure 4 This is a schematic structural diagram of a conical tri-metal liner prepared in Example 2 of the present invention; Figure 5 A schematic diagram of the structure of a device for preparing a spherical bimetallic liner provided in Example 3 of the present invention; Figure 6 This is a schematic structural diagram of a spherical bimetallic liner prepared in Example 3 of the present invention; Figure 7 A schematic diagram of the structure of a device for preparing a spherical-shaped tri-metal liner provided in Example 4 of the present invention; Figure 8 This is a schematic structural diagram of a spherical-shaped tri-metal liner prepared in Example 4 of the present invention; Fig. 9 A schematic diagram of the structure of a device for preparing a trumpet-shaped bimetallic liner provided in Example 5 of the present invention; Fig.10 This is a schematic structural diagram of a trumpet-shaped bimetallic liner obtained in Example 5 of the present invention; Fig.11 A schematic diagram of the structure of a device for preparing a trumpet-shaped three-metal liner provided in Example 6 of the present invention; Fig.12 This is a schematic structural diagram of a trumpet-shaped tri-metal liner obtained in Example 6 of the present invention; Fig.13 Schematic diagram of damage to a composite bimetallic charge liner shaped charge warhead provided as an application example of the present invention.

[0032] Among them, 1-protective cover; 2-shell; 3-fixing ring; 4-detonator; 5-explosive; 6-cavity; 7-base; 8-first momentum block; 9-second momentum block; 10-charge liner A; 11-charge liner B; 12-charge liner C; 13-composite bimetallic charge liner; 14-charge shell; 15-shaped charge; 16-detonator; 17-aluminum jet; 18-copper jet; 19-metal target plate. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of 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] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0035] The present invention will be further described below in conjunction with specific embodiments, but the present invention is not limited thereto.

[0036] Example 1 This embodiment provides a method for preparing a conical bimetallic liner.

[0037] like Figure 1 As shown, the preparation device used in this embodiment includes, from top to bottom, a protective cover 1, a shell 2 and a fixing ring 3; the preparation device includes, from top to bottom, a detonating element 4, explosives 5, a cavity 6, a base 7, a first momentum block 8 and a second momentum block 9.

[0038] Among them, the protective cover 1 and the shell 2 are wrapped around the outside of the explosive 5 and used to contain the explosive 5. Both are made of plastic material PVC pipe or nylon to avoid the formation of lethal metal sheets during the explosion. One end of the detonator 4 extends out of the top of the protective cover 1, and the other end is connected to the explosive 5; the detonator 4 uses a detonating cord, and the explosive 5 uses low-detonation-velocity, low-power ammonium nitrate explosive as a welding energy source. The fixing ring 3 is arranged around the shell 2, the base 7, the first momentum block 8 and the second momentum block 9. The fixing ring 3 is annular and is formed by turning stainless steel to fix the lower end of the shell 2, the base 7, the first momentum block 8 and the second momentum block 9. The base 7 is made of steel and is formed by turning. The lower part of the base is cylindrical. In this embodiment, the upper part of the base 7 is conical, which matches the shape of the charge liner to be welded to achieve a close fit with the lower metal charge liner (i.e., charge liner B). The first momentum block 8 and the second momentum block 9 are both cylindrical, formed by turning stainless steel, and placed at the bottom of the preparation device. They are mainly used to consume residual kinetic energy, and their thickness is 10 mm respectively.

[0039] Furthermore, the cavity 6 between the base 7 and the explosive 5 is used to accommodate the metal liner to be welded; in this embodiment, the metal liner to be welded includes a liner A and a liner B. Among them, the liner A is made of metal aluminum, and the liner B is made of metal copper. Both are conical in shape and are stacked on the base with a welding gap between them (the specific value of the welding gap is determined according to the material, thickness, cone angle and other parameters of the liner).

[0040] The method for using a preparation device for a composite double / multi-metal liner provided in this embodiment comprises the following steps: Step 1: Complete the assembly of the second momentum block 9, the first momentum block 8, the fixing ring 3, the base 7, the shell 2, the metal liner to be welded, and the protective cover 1 in a bottom-up and inside-out order; wherein the base 7 matches the shape of the liner B disposed at the bottom of the cavity 6, and vaseline is applied between the base 7 and the liner B as an isolation agent to prevent the liner B and the base 7 from welding during the preparation process.

[0041] Step 2: Load the explosive 5 from the top of the protective cover 1, vibrate and compact it, and then install the detonator 4.

[0042] Step 3: After completing the preparation work of step 2, the relevant personnel evacuate to a safe area, and then detonate the detonator 4 and then detonate the explosive 5; after the explosive 5 is detonated, it drives the metal charge liner to be welded to collide at high speed, resulting in welding; the welded composite bimetallic charge liner is taken out for trimming, the local deformation of the welding process is fine-tuned, and burrs are removed to obtain a composite bimetallic charge liner.

[0043] Figure 2 The structure diagram of the conical bimetallic liner prepared in this embodiment is shown in FIG. Figure 2 It can be seen that the prepared liner A and liner B are tightly bonded, and there are micro-ripples on the interface.

[0044] Example 2 This embodiment provides a method for preparing a conical tri-metal liner.

[0045] like Figure 3 As shown, the preparation device used in this embodiment is similar in structure to that in Example 1, with the main difference being that the metal liner to be welded in the cavity 6 includes liner A, liner B and liner C. Among them, liner A is made of metal aluminum, liner B is made of metal nickel, and liner C is made of copper. The three are all conical in shape and are stacked on top of the base in sequence, with welding gaps between them. The method of using the preparation device provided in this embodiment is the same as that in Example 1.

[0046] Figure 4 The structure diagram of the conical three-metal liner prepared in this embodiment is shown in FIG. Figure 4 It can be seen that the prepared liner A, liner B and liner C are tightly bonded, and there are micro-ripples on the interface.

[0047] Example 3 This embodiment provides a method for preparing a spherical bimetallic liner.

[0048] like Figure 5As shown, the preparation device used in this embodiment is similar in structure to that in Example 1, with the main difference being that the shapes of the medicine caps A and B are spherical segments, and accordingly, the upper part of the base is also configured to be spherical segments to achieve a close fit with the medicine cap B. The method of using the preparation device provided in this embodiment is the same as that in Example 1.

[0049] Figure 6 The schematic diagram of the structure of the spherical bimetallic liner prepared in this embodiment is shown in FIG. Figure 6 It can be seen that the prepared liner A and the liner B are tightly bonded, and there are micro-ripples on the interface.

[0050] Example 4 This embodiment provides a method for preparing a spherical-shaped tri-metal liner.

[0051] like Figure 7 As shown, the preparation device used in this embodiment is similar in structure to that in Example 3, with the main difference being that the metal liner to be welded in the cavity 6 includes liner A, liner B and liner C. Among them, liner A is made of metal aluminum, liner B is made of metal nickel, and liner C is made of copper. The three are all in the shape of spherical segments, stacked on the base in sequence, with welding gaps between them. The method of using the preparation device provided in this embodiment is the same as that in Example 3.

[0052] Figure 8 The structure diagram of the conical three-metal liner prepared in this embodiment is shown in FIG. Figure 8 It can be seen that the prepared liner A, liner B and liner C are tightly bonded, and there are micro-ripples on the interface.

[0053] Example 5 This embodiment provides a method for preparing a trumpet-shaped bimetallic liner.

[0054] like Fig. 9 As shown, the preparation device used in this embodiment is similar in structure to that in Example 1, with the main difference being that the shapes of the medicine caps A and B are trumpet-shaped, and accordingly, the upper part of the base is also trumpet-shaped to achieve a close fit with the medicine cap B. The method of using the preparation device provided in this embodiment is the same as that in Example 1.

[0055] Fig.10 The structure diagram of the trumpet-shaped bimetallic liner prepared in this embodiment is shown in FIG. Fig.10 It can be seen that the prepared liner A and the liner B are tightly bonded, and there are micro-ripples on the interface.

[0056] Example 6 This embodiment provides a method for preparing a trumpet-shaped three-metal liner.

[0057] like Fig.11 As shown, the preparation device used in this embodiment is similar in structure to that of Embodiment 3, with the main difference being that the metal liner to be welded in the cavity 6 includes liner A, liner B and liner C. Among them, liner A is made of metal aluminum, liner B is made of metal nickel, and liner C is made of copper. The three are all trumpet-shaped and are stacked on top of the base in sequence, with welding gaps between them. The method of using the preparation device provided in this embodiment is the same as that of Embodiment 5.

[0058] Fig.12 The structure diagram of the conical three-metal liner prepared in this embodiment is shown in FIG. Fig.12 It can be seen that the prepared liner A, liner B and liner C are tightly bonded, and there are micro-ripples on the interface.

[0059] Application Examples like Fig.13 As shown, taking the composite bimetallic charge liner prepared in Example 1 as an example, the composite bimetallic charge liner prepared in Example 1 is used in a shaped charge warhead. After the warhead explodes, the metal charge liner will be crushed to form a composite metal jet, with the outer layer being a copper metal jet and the inner layer being an aluminum metal jet.

[0060] When the copper metal jet hits the metal target plate, it penetrates and opens a hole in the metal target plate, and then the inner aluminum jet enters the back of the armor to complete the aftereffect. Since the aluminum jet is prone to deflagration under high-speed impact, when the aluminum jet enters the back of the target plate, it will achieve an enhanced aftereffect damage effect.

[0061] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the contents of the specification of the present invention should be included in the protection scope of the present invention.

Claims

1. A preparation device for a composite double / multi-metal liner, characterized in that: The exterior of the preparation device comprises, from top to bottom: a protective cover (1), a shell (2) and a fixing ring (3); The interior of the preparation device comprises, from top to bottom: a detonating element (4), explosives (5), a cavity (6), a base (7), a first momentum block (8) and a second momentum block (9); The protective cover (1) and the shell (2) are wrapped around the outside of the explosive (5) and are made of plastic material; one end of the detonator (4) extends out of the top of the protective cover (1), and the other end is connected to the explosive (5); The fixing ring (3) is disposed around the outside of the housing (2), the base (7), the first momentum block (8) and the second momentum block (9); The cavity (6) is used to accommodate the metal liner to be welded; the shapes of the cavity (6), the base (3), the explosive (5) and the protective cover (9) all match the shape of the metal liner to be welded.

2. The preparation device according to claim 1, characterized in that: The materials of the protective cover (1) and the shell (2) include PVC pipe and / or nylon.

3. The preparation device according to claim 1, characterized in that: The detonating component (4) includes a detonator or a detonating cord; and the explosive (5) includes ammonium nitrate explosive.

4. The preparation device according to claim 1, characterized in that: The fixing ring (3) is ring-shaped and is formed by turning stainless steel; the base (7), the first momentum block (8) and the second momentum block (9) are all made of metal materials.

5. The method for using the device for preparing the composite double / multi-metal liner according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Complete the assembly of the second momentum block (9), the first momentum block (8), the fixing ring (3), the base (7), the shell (2), the metal liner to be welded, and the protective cover (1) in a sequence from bottom to top and from inside to outside; S2, loading the explosive (5) from the top of the protective cover (1), vibrating and compacting it, and then installing the detonating element (4); S3, detonating the detonating element (4) and then detonating the explosive (5); after the explosive (5) is detonated, it drives the metal charge liner to be welded to collide at high speed, generating a welding phenomenon, and obtaining a composite double / multi-metal charge liner.

6. The method of use according to claim 5, characterized in that: The number of the metal charge liners to be welded is not less than two, and they are placed in a stacked manner in the cavity (6), with a welding gap left between adjacent metal charge liners to be welded.

7. The method of use according to claim 6, characterized in that: The metal of the metal charge liner to be welded is selected from at least two of copper, titanium, aluminum, magnesium, nickel, tungsten alloy, and uranium alloy.

8. The method of use according to claim 6, characterized in that: The base (7) matches the shape of a metal liner to be welded and is arranged at the bottom of the cavity (6), and an isolation agent is provided between the base (7) and the metal liner to be welded.

9. The method of use according to claim 5, characterized in that: Step S3 also includes trimming the composite dual / multi-metal liner, fine-tuning the local deformation during the welding process, and removing burrs.

10. A composite double / multi-metal liner, characterized in that: The method is manufactured by the preparation device according to any one of claims 1 to 4 or the use method according to any one of claims 5 to 9.

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