CN108161210B - Self-hardening filling type hollow structure explosion composite board and manufacturing method thereof - Google Patents

Abstract

The invention discloses a self-hardening filling type hollow structure explosion composite board and a manufacturing method thereof, wherein the method comprises the steps of firstly, preprocessing a substrate or a shroud plate of the explosion composite board, namely, opening a hollow channel on the substrate or the shroud plate, adding shearing thickening fluid into the hollow channel, and forming a closed hollow channel filled with the shearing thickening fluid after explosion and compounding; and then punching holes on the composite board, and discharging shearing thickening liquid, so as to form the explosion composite board with the hollow channel, wherein the explosion composite board has good tightness and strength. The invention pretreats the composite board to form a sealed hollow structure after explosion and compounding, reduces openings and wound surfaces, and ensures that the hollow structure of the composite board has better strength and sealing performance. The composite board is manufactured by adopting explosion composite, and the material and the size of the metal plate are not limited. The metal plates with larger physical property difference and large-area metal plates can realize better compounding, and the bonding surface strength is high. The explosion composite technology is mature, the welding strength can be ensured, the cost is saved, and the method is simple and easy to implement.

Description

A self-hardening filled hollow structure explosive composite panel and its production method

Technical field

The invention relates to the technical field of explosive composite panels, and in particular to a self-hardening filled hollow structure explosive composite panel and a manufacturing method thereof.

Background technique

Explosive composite panels are metal composite panels produced using the explosive composite method (explosion welding method). The application performance of explosive composite panels is very good. It can withstand cold and hot processing without changing the thickness of the composite material. It has a higher bonding strength than composite materials, which is usually higher than the lower composite material. This is unachievable by other technologies. Composite materials produced by the explosive composite method have been widely used in petroleum, chemical industry, shipbuilding, electronics, electric power, metallurgy, machinery, aerospace, atomic energy and other industrial fields.

Explosive composite panels adopt a hollow structure, which can give full play to the excellent properties of the two metal panels. For example, a new type of bimetallic high-efficiency and energy-saving composite material with carbon steel as the base plate and precious metal as the laminated layer on one or more sides is composited through a special processing process of explosive welding. It has the corrosion resistance and wear resistance of precious metals. It also has the good formability, extensibility and thermal conductivity of carbon steel; the production of hollow channels is the difficulty of this hollow structure composite panel. If the hollow channel is processed after explosive compounding, especially when the hollow structure is at the interface of two metals, its strength and tightness cannot be guaranteed. The production of the hollow channel is one of the difficulties. In order to achieve the ideal effect of the hollow channel, its durability must be ensured. High impact heat, high strength resistance and sealing, the production method is crucial.

The present invention proposes to use the method of shearing thickening liquid to produce explosive composite panels with hollow structures. Shear thickening fluid is a new type of protective material that emerged in the United States and Britain in the early 21st century and was further developed in China. There are many special particles freely suspended in the shear thickening fluid. The nano-spherical particles it contains are the hardest non-metallic particles in nature. One of the metal materials. Shear thickening fluid is a suspension material with unique properties. Under high-speed impact, the apparent viscosity changes dramatically, and even changes from liquid to solid-like state. It can quickly recover after the impact is removed. This reversible shear thickening characteristic This makes it have broad application prospects in fields such as impact protection equipment. This invention utilizes the characteristic that the shear thickening liquid solidifies under high impact and becomes liquid again when the impact is removed. It is added into the tank of the prefabricated substrate or covering plate. During the explosive recombination, the shear thickening liquid becomes solid and starts to react. It plays a supporting role and reduces the boundary effect of explosive recombination. After explosive recombination, the shear thickening liquid becomes liquid again and flows out of the composite plate, thereby forming a closed hollow structure in the composite plate.

In the published literature, patents, and information, no explosive composite panels with hollow structures made from shear thickening liquid have yet to be found.

Contents of the invention

This invention utilizes the characteristics of the shear thickening liquid that solidifies during high-speed impact loading and becomes liquid after unloading. It fills the gaps between prefabricated substrates or covering plates. During explosive recombination, the shear thickening liquid becomes solid and acts as a support. After the explosive recombination, the shear thickener becomes liquid again and flows out of the composite board, thereby forming a closed hollow structure in the composite board.

In order to achieve the above objects of the present invention, the present invention provides the following technical solutions:

The present invention proposes a self-hardening filled hollow structure explosive composite panel, which includes a base plate, a covering plate and a mesopore channel. The base plate or covering plate is grooved as needed, and the groove is filled with a shear thickening liquid. The base plate is , the covering plate and the shear thickening liquid are put into the explosion site for explosive compounding. Holes are drilled at both ends of the tank, and the shear thickening liquid is poured out of the composite plate. The shape of the tank can be square or round. , or arch.

The present invention proposes a method for making a self-hardening filled hollow structure explosive composite panel. The base plate or covering plate of the explosive composite plate is pretreated, that is, a hollow channel is opened on the base plate or covering plate, and shear augmentation is added to the hollow channel. After the thick liquid is explosively combined, a sealed hollow channel filled with shear thickening liquid is formed. Then holes are drilled in the composite plate to release the shear thickening liquid, thereby forming an explosion with a hollow channel that has good sealing and strength. Composite panels.

As described above, a method for making a self-hardening filled hollow structure explosive composite panel. The hollow channel opened before explosive composite can be opened on the base plate, can be opened on the covering plate, or can be opened on both the base plate and the covering plate as needed. Slots or holes can be made into square slots or round holes as needed.

As described above, a method for making a self-hardening filled hollow structure explosive composite panel is to open a groove in the base plate or covering plate, fill the shear thickening liquid with a plastic tube (bag) of corresponding size, and put it into the groove. Apply epoxy resin to secure. Treat the surface cleanly to avoid affecting the explosive compounding of the base plate and the covering plate. There are many special particles freely suspended in the shear thickening liquid. When the liquid is disturbed by violent impact, the special particles in it collide with each other, forming a resistance to such agitation. When the cover plate hits the substrate at high speed, it also hits this shear thickening liquid, so that the shear thickening liquid will absorb the impact energy, quickly become extremely hard, play a supporting role, and at the same time reduce the boundary effect during explosive recombination. When the impact disappears, the shear thickening fluid returns to its liquid state.

As described above, there is a method for making a self-hardening filled hollow structure explosive composite panel. After explosive compounding, holes are drilled in the composite panel to allow the shear thickening liquid to flow out to form a composite panel with a hollow structure.

As described above, a method for making a self-hardening filled hollow structure explosive composite panel. The base plate and the covering panel are not restricted by the materials. As long as the metal can be processed by explosive composite processing, this method can be used to make explosive composite panels with hollow structures. Composite panels.

As described above, there is a method for making a self-hardening filled hollow structure explosive composite panel. The explosive has no special requirements on the type and explosion velocity. No matter whether it is a single substance or a mixed explosive, or a low explosion velocity or a high explosion velocity explosive, the composite can be realized.

As described above, a method for making a self-hardening filled hollow structure explosive composite panel includes the following steps:

Step (1) Preprocess the substrate covering board. Cut grooves in the base or sheathing.

Step (2) Add shear thickening liquid into the groove of the base plate or covering plate.

Step (3) Clean the surface of the substrate and covering board and put them into the explosion field for explosive compounding.

Step (4) Punch one end of the cover plate or base plate to allow the shear thickening liquid to flow out of the composite plate to form an explosive composite plate with a hollow structure.

The principle of the invention is to take advantage of the characteristic of "shear thickening liquid solidifies under high strain rate and returns to liquid state after stress is released", adding it to the groove of the prefabricated substrate or covering plate, and during the explosive compounding, the shear thickening liquid The thickening liquid becomes solid and acts as a support to reduce the boundary effect of explosive recombination. After explosive recombination, the shear thickening liquid becomes liquid again and flows out of the composite plate, thus forming an explosive composite plate with a closed hollow structure.

Compared with the existing technology, the advantages and notable features of the present invention are:

(1) Pre-process the composite board to form a sealed hollow structure after explosive compounding, reduce openings and wounds, and make the hollow structure of the composite board have better strength and sealing properties.

(2) The present invention uses explosive compounding to produce composite panels, and the material and size of the metal panels are not limited. Metal plates with large differences in physical properties and large-area metal plates can achieve better composites, and the joint surface strength is high.

(3) Explosive composite technology is relatively mature, the welding strength can be guaranteed, cost is saved, and it is simple and easy to implement.

(4) The materials of the cladding and substrate are not restricted and have good versatility.

Description of the drawings

Figure 1 is a schematic diagram of the slotting structure of the substrate.

Figure 2 is a schematic diagram of adding shear thickening liquid to the substrate.

Figure 3 is a schematic diagram of the explosive composite device.

Among them, 1-substrate; 2-covering plate; 3-shear thickening liquid; 4-explosive; 5-detonator; 6-gap support; 7-trough (hollow channel).

Detailed ways

The present invention will be described in further detail below with reference to the examples and drawings, but the implementation of the present invention is not limited thereto.

Example 1:

The invention proposes a self-hardening filled hollow structure explosive composite panel, which includes a base plate 1, a covering plate 2 and a groove (hollow channel) 7, in addition to inlets and outlets at both ends of the groove. The base plate 1 and the covering plate 2 are closely connected through explosive recombination. The groove (hollow channel) 7 is a groove previously opened on the stainless steel base plate (or on the covering plate). The groove can be in the base plate or the covering plate, or it can span the interface between the base plate and the covering plate. The shape of the slot can be square, round or arched. As shown in Figure 1, the square groove is opened on the base plate, and the hollow channel is on the base plate. After explosive compounding, a sealed explosive compound plate is formed with the tank filled with shear thickening liquid. Open the two ends of the corresponding grooves on the composite board and pour out the shear thickening liquid, which is an explosive composite board containing a hollow structure.

Example 2:

Step (1) Explosion welding method is used to produce chromium zirconium copper-stainless steel composite panels. The base plate 1 is made of stainless steel with a size of 400mm×300mm×16mm, and the cover plate 2 is made of chromium zirconium copper 550mm×320mm×7mm. The groove 7 on the stainless steel base plate is opened into a square groove with a depth of 18 mm and a width of 12 mm. As shown in Figure 1;

Step (2) Fill a square plastic tube with a cross-sectional size of 17 mm × 11 mm with shear thickening liquid 3, then place it into a stainless steel groove on the base plate and fix it with epoxy resin. as shown in picture 2;

Step (3) Clean the surface of the substrate and covering board, and fill the empty parts of the square groove with epoxy resin. Put it into the explosive compounding field for explosive compounding. The explosive compound 4 is a powdery emulsion explosive filled with honeycomb aluminum, and a detonator 5 is inserted into one end of the explosive, as shown in Figure 3;

Step (4) After explosive compounding, cut off the excess part of the composite plate and punch holes at both ends of the square groove to allow the shear thickening liquid to flow out of the groove. The hollow structure is resistant to high temperatures, impact, and has good sealing properties. As long as it is heated, the remaining square plastic tubes can melt and flow out of the square groove to form a composite panel with a hollow structure.

Example 3:

Step (1) Explosion welding method is used to produce aluminum-stainless steel composite panels. The base plate 1 is made of stainless steel with a size of 500mm×300mm×14mm, and the cover plate 2 is made of aluminum 550mm×320mm×8mm. The groove 7 on the stainless steel base plate is opened into a circular groove with a diameter of 12 mm. As shown in Figure 1;

Step (2) Put a circular plastic bag with a diameter of 15mm x 11mm into the shear thickening liquid 3, then put it into the hole of the stainless steel base plate and fix it with epoxy resin. as shown in picture 2;

Step (3) Clean the surface of the substrate and covering board, and fill the empty parts of the square groove with epoxy resin. Put it into the explosive compounding field for explosive compounding. The explosive compound 4 is a powdery emulsion explosive filled with honeycomb aluminum, and a detonator 5 is inserted into one end of the explosive, as shown in Figure 3;

Step (4) After explosive compounding, cut off the excess part of the composite board and punch holes at both ends of the hole to allow shear thickening and flow out of the hole. Since the hollow structure is resistant to high temperatures, impact, and has good sealing properties, as long as it is heated, the remaining square plastic tubes can melt and flow out of the square groove to form a composite panel with a hollow structure.

Claims (1)

1. A method for manufacturing self-hardening filled hollow structure explosive composite panels, which is characterized by: including the following steps: Step (1) Pre-process the substrate covering board and make grooves on the substrate; Step (2) Add shear thickening liquid into the groove of the substrate; Step (3) Clean the surface of the substrate and covering board and put them into the explosion field for explosive compounding; Step (4) Drill a hole at one end of the substrate to allow the shear thickening liquid to flow out of the composite board to form an explosive composite board with a hollow structure; Specifically, step (1) uses explosive welding to make a chromium-zirconium-copper-stainless steel composite plate. The base plate is made of stainless steel. The size of the stainless steel is 400 mm × 300 mm × 16 mm. The cover plate is made of chromium-zirconium copper 550 mm × 320 mm × 7 mm. The base plate is made of stainless steel. The groove is cut into a square groove with a depth of 18mm and a width of 12mm; Step (2) Fill the square plastic tube with a cross-sectional size of 17mm × 11mm with shear thickening liquid, then place it into the stainless steel groove of the base plate and fix it with epoxy resin; Step (3) Clean the surface of the substrate and covering board, fill the empty part of the square groove with epoxy resin, and put it into the explosive compounding field for explosive compounding. The explosive compound used is powdery emulsion explosive filled with honeycomb aluminum. One end of the explosive is inserted into the detonator; Step (4) After explosive compounding, cut off the excess part of the composite plate, and punch holes at both ends of the square groove to allow the shear thickening liquid to flow out of the groove. The hollow structure is resistant to high temperatures, impact resistance, and has good sealing properties. As long as it is heated , the remaining square plastic tube can melt and flow out of the square groove, thereby forming a composite board with a hollow structure; Or, step (1) make an aluminum-stainless steel composite plate by explosion welding method. The base plate is made of stainless steel. The size of the stainless steel is 500mm×300mm×14mm. The cover plate is made of aluminum 550mm×320mm×8mm. The groove on the stainless steel base plate is opened into a circle. Groove, diameter 12mm; Step (2) Put the round plastic bag into the shear thickening liquid, then put it into the stainless steel tank of the substrate and fix it with epoxy resin; Step (3) Clean the surface of the substrate and covering board, fill the empty part of the circular groove with epoxy resin, and put it into the explosive compounding field for explosive compounding. The explosive used in the explosive compounding is powdery emulsion explosive filled with honeycomb aluminum. Insert a detonator into one end of the explosive; Step (4) After explosive compounding, cut off the excess part of the composite plate, and punch holes at both ends of the groove to allow the shear thickening liquid to flow out of the holes. Since the hollow structure is resistant to high temperatures, impact, and has good sealing properties, as long as When heated, the remaining circular plastic bags can melt and flow out of the circular groove, thereby forming a composite board with a hollow structure.