CN115533292A - Preparation method of energy-gathering explosive welding composite board - Google Patents

Preparation method of energy-gathering explosive welding composite board Download PDF

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Publication number
CN115533292A
CN115533292A CN202211224951.8A CN202211224951A CN115533292A CN 115533292 A CN115533292 A CN 115533292A CN 202211224951 A CN202211224951 A CN 202211224951A CN 115533292 A CN115533292 A CN 115533292A
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plate
composite
explosive
energy
placing
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Inventor
侯国亭
冯健
刘献甫
张陆定
张晓飞
荆永波
刘聪
孙军营
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Wugang Shenzhou Heavy Industry Clad Metal Materials Co ltd
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Wugang Shenzhou Heavy Industry Clad Metal Materials Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/06—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of high energy impulses, e.g. magnetic energy
    • B23K20/08—Explosive welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/24—Preliminary treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/26—Auxiliary equipment

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

The invention belongs to the technical field of explosive welding. The invention provides a preparation method of an energy-gathering explosive welding composite board, which comprises the following steps: pretreating the base layer plate and the composite layer plate to obtain a pretreated base layer plate and a pretreated composite layer plate; placing a V-shaped supporting column on the pretreated base plate, and placing a composite plate on the V-shaped supporting column; placing a medicine box on the periphery of the composite plate, sequentially placing powdery emulsion explosive, plastic film and carborundum in the medicine box, and injecting water into the carborundum; and (3) inserting a detonator into the powdery emulsion explosive in the width direction of the composite board, and then carrying out explosive welding to obtain the energy-gathered explosive welding composite board. The preparation method is simple, efficient, safe, reliable, simple in process and capable of realizing large-scale production; the energy-gathered explosive welding composite plate is applied to the manufacture of pressure vessel equipment in a large scale, and the technical parameters completely meet the requirements of the pressure vessel equipment under severe conditions such as working environment, temperature, pressure and the like.

Description

Preparation method of energy-gathering explosive welding composite board
Technical Field
The invention relates to the technical field of explosive welding, in particular to a preparation method of an energy-gathering type explosive welding composite plate.
Background
The explosive welding technology is a welding method which utilizes the energy generated by explosive explosion to drive a composite plate to impact a base plate at a high speed so as to form solid phase combination between two layers of metals. Because explosive welding is open type exposed explosive charging, and explosives are flatly laid on the compound plate, the energy of the explosives acting on the compound plate is only about 30% of the total energy of the explosives, and nearly 70% of the energy dissipated by the explosives above the compound plate can cause huge harmful influence on the surrounding environment.
Aiming at the problem that the energy utilization rate of the explosive is too low in explosive welding, related patents CN201720289126.4, CN201310282589.4, CN200610096300.3 and CN201410396067.1 respectively disclose an explosive welding device with self-restraint high energy utilization rate, a horizontal double-sided explosive welding technology based on honeycomb-structure explosive, a double-vertical explosive welding device and a double-vertical explosive welding self-locking type protection installation device, the patent technologies have obvious effects on improving the utilization rate of the explosive energy, and the double-vertical explosive welding method can improve the energy utilization rate of the explosive by more than 60%. Although the patent technology effectively solves the problem of low energy utilization rate of explosive welding, the device has the defects of complex manufacturing process, non-reusability, unsuitability for explosive welding production of large-format composite boards and difficulty in mounting the base and composite boards in actual production; particularly, during explosive welding, the protective cover, the self-locking device and the like fly away everywhere under the action of explosive load, and the like, which not only limits the breadth size of the explosive welding composite board, but also is not suitable for large-scale production.
Therefore, it is necessary to develop an explosion welding method with the advantages of energy saving, consumption reduction, safety, reliability, simple process, economy and practicality.
Disclosure of Invention
The invention aims to provide a preparation method of an energy-gathering type explosive welding composite plate aiming at the defects of the prior art, and aims to solve the problems that the explosive energy utilization rate is low, the improved explosive welding production process is complex, time and labor are wasted, potential safety hazards are prominent, the breadth of the explosive welding composite plate is limited, and the like in the explosive welding process in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a preparation method of an energy-gathering explosive welding composite board, which comprises the following steps:
1) Pretreating the base layer plate and the composite layer plate to obtain a pretreated base layer plate and a pretreated composite layer plate;
2) Placing a V-shaped supporting column on the pretreatment base layer plate, and placing a pretreatment composite layer plate on the V-shaped supporting column;
3) Placing a medicine box on the periphery of the composite plate, sequentially placing powdery emulsion explosive, a plastic film and carborundum in the medicine box, and injecting water into the carborundum;
4) And (3) inserting a detonator into the powdery emulsion explosive in the width direction of the composite layer plate, and then performing explosive welding to obtain the energy-gathered explosive welding composite plate.
Preferably, the base layer plate is a Q345 low alloy plate, the thickness of the base layer plate is 35-45 mm, the width is 1200-1800 mm, and the length is 4800-5200 mm; the composite plate is a Hastelloy plate, the Hastelloy is C276, C59, C22 or B2, the thickness of the composite plate is 2-4 mm, the width is 1244-1860 mm, and the length is 4840-5250 mm.
Preferably, the roughness of the pretreated base plate and the roughness of the pretreated clad plate in the step 1) are independently less than or equal to 1.8 mu m.
Preferably, the height of the V-shaped support columns in the step 2) is 6-10mm, the interval of the V-shaped support columns is more than or equal to 200mm, and the V-shaped support columns are placed according to a diamond structure.
Preferably, the distance between the periphery of the pretreated composite plate in the step 2) and the periphery of the pretreated base plate exceeds more than or equal to 22mm.
Preferably, the material of the medicine box in the step 3) is gray board paper, the thickness of the medicine box is 1.6-1.8 mm, and the height of the medicine box is 60-70 mm; the plastic film is tightly attached to and extends out of the periphery of the medicine box.
Preferably, in the step 3), the height of the powdery emulsion explosive is 25-35 mm; the height of the carborundum is 9-13 mm, and the water surface is 10-15 mm higher than the carborundum surface.
Preferably, the detonator is inserted into the middle position of the powdery emulsion explosive in the width direction of the clad plate, and the depth of the detonator in the powdery emulsion explosive is 14.5-15.5 mm.
The beneficial effects of the invention include the following:
1) The preparation method of the energy-gathering explosive welding composite board is simple, efficient, safe, reliable, simple in process, capable of realizing large-scale production and has the advantages of energy conservation and consumption reduction.
2) Through nondestructive testing and mechanical test tests, the indexes of the energy-gathering explosive welding composite board, such as bonding strength, recombination rate, mechanical property and the like, all reach or exceed the technical requirements of national standard GB/T8165 and industry standard NB/T47002.1. After being applied to the manufacture of pressure vessel equipment in a large scale, the technical parameters completely meet the requirements of the pressure vessel under severe conditions such as working environment, temperature, pressure and the like.
3) In the preparation method, the water sand energy accumulation layer covers the explosive, so that the energy accumulation effect is achieved in explosive welding, the acting capacity on the clad plate is increased, the influence of the water sand layer on the density of the explosive is combined, and the using amount of the explosive is saved by more than 30% compared with that of the traditional explosive welding process. And sufficient water content in the sand plays a certain positive role in dust fall and smoke removal.
Drawings
Fig. 1 is a schematic view of the device for preparing the energy-gathered explosive welding composite board, wherein 1 is an electric detonator, 2 is a medicine box, 3 is powdery emulsion explosive, 4 is a support column, 5 is a foundation, 6 is a base plate, 7 is a composite plate, 8 is a water sand energy gathering layer, and 9 is a plastic film.
Detailed Description
The invention provides a preparation method of an energy-gathering explosive welding composite board, which comprises the following steps:
1) Pretreating the base layer plate and the composite layer plate to obtain a pretreated base layer plate and a pretreated composite layer plate;
2) Placing a V-shaped supporting column on the pretreatment base layer plate, and placing a pretreatment composite layer plate on the V-shaped supporting column;
3) Placing a medicine box on the periphery of the composite plate, sequentially placing powdery emulsion explosive, plastic film and carborundum in the medicine box, and injecting water into the carborundum;
4) And (3) inserting a detonator into the powdery emulsion explosive in the width direction of the composite layer plate, and then performing explosive welding to obtain the energy-gathered explosive welding composite plate.
The base plate is preferably a Q345 low alloy plate, and the thickness of the base plate is preferably 35-45 mm, more preferably 37-42 mm, and even more preferably 39-40 mm; the width is preferably 1200 to 1800mm, more preferably 1300 to 1700mm, and even more preferably 1400 to 1600mm; the length is preferably 4800-5200 mm, more preferably 4900-5100 mm, and even more preferably 5000mm; the composite plate is preferably a hastelloy plate, the hastelloy plate is preferably C276, C59, C22 or B2, and the thickness of the composite plate is preferably 2-4 mm, more preferably 2.5-3.5 mm, and more preferably 3mm; the width is preferably 1244 to 1860mm, more preferably 1400 to 1700mm, and even more preferably 1500 to 1600mm; the length is preferably 4840 to 5250mm, more preferably 4900 to 5100mm, and still more preferably 4950 to 5000mm.
In the step 1), the pretreatment is preferably to remove oxide skins and oil stains of the base plate and the clad plate, so that the surfaces of the plates are free of pits and wrinkles and the metal surfaces are exposed; further preferably, a hand-held thousand-impeller is adopted; the pretreatment is preferably carried out on one side of the base and clad laminate, respectively.
In the invention, the roughness of the pretreated base layer plate and the roughness of the pretreated composite layer plate in the step 1) are independent and are preferably less than or equal to 1.8 mu m, and further preferably less than or equal to 1.7 mu m.
In the invention, the height of the V-shaped support column in the step 2) is preferably 6-10 mm, more preferably 7-9 mm, and even more preferably 8mm; the interval of the V-shaped support columns is preferably more than or equal to 200mm, more preferably 210-230 mm, and even more preferably 220mm; the V-shaped supporting columns are preferably uniformly arranged according to a diamond structure.
In the invention, the distance of the periphery of the composite plate in the step 2) exceeding the periphery of the base plate is preferably more than or equal to 22mm, and the distance of the periphery of the composite plate exceeding the base plate is further preferably more than or equal to 24mm; the length direction of the base layer plate and the length direction of the clad layer plate are correspondingly arranged, and the width direction of the base layer plate and the width direction of the clad layer plate are correspondingly arranged; the surface of the pre-treated composite layer plate and the surface of the pre-treated base layer plate are contacted with the V-shaped supporting column.
In the invention, the material of the medicine box in the step 3) is preferably gray board paper, and the thickness of the medicine box is preferably 1.6-1.8 mm, more preferably 1.65-1.75 mm, and more preferably 1.7mm; the height of the medicine box is preferably 60 to 70mm, more preferably 62 to 68mm, and even more preferably 64 to 66mm; the size of the medicine box is completely the same as that of the multiple layer plate; the bottom of the kit is preferably secured to the double-layered plate, and is further preferably secured with an adhesive tape.
In the present invention, the plastic film is preferably applied to and extends around the periphery of the medicine cartridge, and the plastic film is any plastic film that is conventional in the art.
In the step 3) of the invention, the height of the powdery emulsion explosive is preferably 25 to 35mm, more preferably 27 to 33mm, and still more preferably 29 to 31mm; the powdery emulsion explosive is preferably a low-detonation-velocity powdery emulsion explosive.
In step 3) of the present invention, the height of the corundum is preferably 9 to 13mm, more preferably 10 to 12mm, and still more preferably 11mm; the water surface is preferably 10 to 15mm, more preferably 11 to 14mm, and still more preferably 12 to 13mm higher than the carborundum surface.
In the preparation method, as the water sand energy accumulation layer with a certain amount is arranged on the explosive, the weight of water sand energy accumulation evenly applies force on the explosive, so that the density of the explosive below the water sand energy accumulation layer is increased. According to the explosive property of the explosive, the density of the explosive is increased, the explosive force (brisance) is correspondingly increased, the working capacity is correspondingly enhanced, and the purposes of saving energy and reducing consumption are achieved. And because the water exists in the sand, the sand can be efficiently and quickly placed on the explosive layer uniformly, and the density of the explosive layer is kept consistent, so that the explosion speed of the whole explosive layer is ensured to be consistent, and the aim of consistent shearing strength of the whole plate bonding interface of the explosion welding composite plate is fulfilled.
In the invention, the detonator is preferably inserted into the middle position of the powdery emulsion explosive in the width direction of the clad plate, and the depth of the detonator in the powdery emulsion explosive is preferably 14.5-15.5 mm, more preferably 14.8-15.3 mm, and more preferably 15-15.1 mm; the detonator is preferably an electric detonator.
In the invention, the hastelloy after explosion welding is preferably subjected to stress relief heat treatment and correction treatment in sequence, wherein the stress relief treatment is a conventional method in the field, and the correction treatment is preferably a straightening machine.
The schematic diagram of the device for the preparation process of the energy-gathering explosive welding composite board is shown in figure 1, wherein 1 is an electric detonator, 2 is a medicine box, 3 is powdery emulsion explosive, 4 is a support column, 5 is a foundation, 6 is a base plate, 7 is a composite plate, 8 is a water-sand energy-gathering layer, and 9 is a plastic film.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
The size of the Q345 low alloy base plate is as follows: the thickness is 35mm, the width is 1200mm, and the length is 4800mm. And (3) removing oxides and oil stains on the surface of the base layer board to be compounded by using a portable 60# kilo-bladed wheel, ensuring that no pocks and wrinkles appear on the board surface, and ensuring that the roughness of the treated composite board surface is 1.8 mu m. The size of the C59 Hastelloy composite laminated plate is as follows: the thickness is 2mm, the width is 1244mm, the length is 4844mm, the portable 60# kilo-blade wheel is used for removing the oxide and oil stain on the composite board surface to be compounded, no pockmark and no wrinkle are ensured to appear on the board surface, and the roughness of the treated composite board surface is 1.8 mu m.
Placing a base plate on a flat foundation, placing V-shaped support columns (the V-shaped support columns are in surface contact with the treated base plate) at intervals on the base plate, uniformly placing the V-shaped support columns in a rhombic shape, wherein the interval between the V-shaped support columns is 210mm, and the height of the V-shaped support columns is 6mm. Placing the composite plate on the V-shaped supporting column (the V-shaped supporting column is in surface contact with the processed composite plate), correspondingly placing the base plate in the length direction and the composite plate in the length direction, correspondingly placing the base plate in the width direction and the composite plate in the width direction, and enabling the periphery of the composite plate to be larger than the periphery of the base plate by 22mm.
A medicine box is formed by placing gray board paper with the thickness of 1.6mm, the height of 60mm, the length of 4844mm and the width of 1244mm on the periphery of a compound plate, and the bottom of the medicine box is fixed on the compound plate by an adhesive tape. And (3) distributing the low-detonation-velocity powdery emulsion explosive with the height of 25mm in the medicine box, and laying a plastic film on the powdery emulsion explosive, wherein the plastic film is tightly attached to and extends out of the four peripheral parts of the medicine box.
Uniformly distributing carborundum with the height of 10mm on the plastic film, and then injecting clear water into the carborundum to ensure that the water surface is 10mm higher than the sand surface. And (3) lifting the plastic film in the middle of the composite board in the width direction, arranging the detonators on the explosive on the lower side of the outer side of the plastic film in the middle of the width direction, enabling the depth of the detonators inserted into the explosive to be 14.7mm, and detonating the detonators for explosive welding to obtain the energy-gathered explosive welding composite board.
The size of the energy-gathering type explosion welding composite plate of the embodiment is (2 + 35) multiplied by 1200 multiplied by 4800mm; the bonding rate of the energy-gathered explosive welding composite board is 100 percent, the tensile strength is 510MPa, the yield strength is 345MPa, the elongation after fracture is 31 percent, and the impact absorption energy KV 2 =89J, shear strength 295MPa.
Example 2
The size of the Q345 low alloy base plate is as follows: thickness 42mm, width 1700mm, length 5100mm. And (3) removing oxides and oil stains on the surface of the base layer board to be compounded by using a portable 60# kilo-bladed wheel, ensuring that no pocks and wrinkles appear on the board surface, and ensuring that the roughness of the treated composite board surface is 1.7 mu m. The size of the C22 Hastelloy composite laminated plate is as follows: the thickness is 4mm, the width is 1750mm, the length is 5150mm, a portable 60# kilo-blade wheel is used for removing oxides and oil stains on the composite board surface to be compounded, no pockmark or wrinkle is ensured to appear on the board surface, and the roughness of the treated composite board surface is 1.7 mu m.
Placing a base plate on a flat foundation, placing V-shaped support columns (the V-shaped support columns are in surface contact with the treated base plate) at intervals on the base plate, uniformly placing the V-shaped support columns in a rhombic shape, wherein the interval between the V-shaped support columns is 200mm, and the height of the V-shaped support columns is 9mm. Placing the composite plate on the V-shaped supporting column (the V-shaped supporting column is in surface contact with the processed composite plate), correspondingly placing the base plate in the length direction and the composite plate in the length direction, correspondingly placing the base plate in the width direction and the composite plate in the width direction, and enabling the periphery of the composite plate to be larger than 25mm of the periphery of the base plate.
A medicine box is formed by placing gray board paper with the thickness of 1.8mm, the height of 70mm, the length of 5150mm and the width of 1750mm on the periphery of a composite board, and the bottom of the medicine box is fixed on the composite board by using an adhesive tape. And (3) distributing the low-detonation-velocity powdery emulsion explosive with the height of 35mm in the medicine box, and laying a plastic film on the powdery emulsion explosive, wherein the plastic film is tightly attached to and extends out of the four peripheral parts of the medicine box.
Uniformly distributing carborundum with the height of 12mm on the plastic film, and then injecting clear water into the carborundum to ensure that the water surface is 14mm higher than the sand surface. And (3) lifting the plastic film in the middle of the composite board in the width direction, arranging the detonators on the explosive on the lower side of the outer side of the plastic film in the middle of the width direction, inserting the detonators into the explosive with the depth of 15.3mm, and detonating the detonators for explosive welding to obtain the energy-gathered explosive welding composite board.
The size of the energy-gathering type explosion welding composite plate in the embodiment is (4 + 42) multiplied by 1700 multiplied by 5100mm; the bonding rate of the energy-gathered explosive welding composite board is 100 percent, the tensile strength is 560MPa, the yield strength is 325MPa, the elongation after fracture is 28 percent, and the impact absorption energy KV 2 =93J, shear strength 305MPa.
Example 3
The size of the Q345 low alloy base plate is as follows: the thickness is 40mm, the width is 1500mm, and the length is 5000mm. And (3) removing oxides and oil stains on the surface of the base layer board to be compounded by using a portable 60# kilo-bladed wheel, ensuring that no pocks and wrinkles appear on the board surface, and ensuring that the roughness of the treated composite board surface is 1.8 mu m. The size of the B2 Hastelloy composite laminated plate is as follows: the composite board is 3mm in thickness, 1546mm in width and 5046mm in length, oxides and oil stains on the composite board to be compounded are removed by using a portable 60# kilo-blade wheel, pockmarks and wrinkles on the board are avoided, and the roughness of the treated composite board is 1.8 mu m.
Placing a base plate on a flat foundation, placing V-shaped support columns (the V-shaped support columns are in contact with the surface of the processed base plate) at intervals on the base plate, uniformly placing the V-shaped support columns in a rhombic shape, wherein the interval between the V-shaped support columns is 205mm, and the height of the V-shaped support columns is 8mm. Placing the composite plate on the V-shaped supporting column (the V-shaped supporting column is in surface contact with the processed composite plate), correspondingly placing the base plate in the length direction and the composite plate in the length direction, correspondingly placing the base plate in the width direction and the composite plate in the width direction, and enabling the periphery of the composite plate to be larger than the periphery of the base plate by 23mm.
A medicine box is formed by placing gray board paper with the thickness of 1.7mm, the height of 65mm, the length of 5046mm and the width of 1546mm on the periphery of a composite board, and the bottom of the medicine box is fixed on the composite board by using an adhesive tape. And (3) distributing low-detonation-velocity powdery emulsion explosive with the height of 30mm in the medicine box, and laying a plastic film on the powdery emulsion explosive, wherein the plastic film is tightly attached to the periphery of the medicine box and extends out of the periphery of the medicine box.
Uniformly distributing carborundum with the height of 11mm on the plastic film, and then injecting clear water into the carborundum to ensure that the water surface is 13mm higher than the sand surface. And (3) lifting the plastic film in the middle of the composite board in the width direction, arranging the detonators on the explosive on the lower side of the outer side of the plastic film in the middle of the width direction, wherein the depth of the detonators inserted into the explosive is 15mm, and detonating the detonators for explosive welding to obtain the energy-gathered explosive welding composite board.
The size of the energy-gathering type explosion welding composite plate of the embodiment is (3 + 40) multiplied by 1500 multiplied by 5000mm; the bonding rate of the energy-gathered explosive welding composite board is 100 percent, the tensile strength is 520MPa, the yield strength is 330MPa, the elongation after fracture is 30 percent, and the impact absorption energy KV 2 =69J, shear strength 315MPa.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (8)

1. The preparation method of the energy-gathering explosive welding composite plate is characterized by comprising the following steps of:
1) Pretreating the base layer plate and the composite layer plate to obtain a pretreated base layer plate and a pretreated composite layer plate;
2) Placing a V-shaped supporting column on the pretreatment base layer plate, and placing a pretreatment composite layer plate on the V-shaped supporting column;
3) Placing a medicine box on the periphery of the composite plate, sequentially placing powdery emulsion explosive, plastic film and carborundum in the medicine box, and injecting water into the carborundum;
4) And (3) inserting a detonator into the powdery emulsion explosive in the width direction of the composite board, and then carrying out explosive welding to obtain the energy-gathered explosive welding composite board.
2. The production method according to claim 1, wherein the base layer board is a Q345 low alloy board, the thickness of the base layer board is 35 to 45mm, the width is 1200 to 1800mm, and the length is 4800 to 5200mm; the composite plate is a Hastelloy plate, the Hastelloy is C276, C59, C22 or B2, the thickness of the composite plate is 2-4 mm, the width is 1244-1860 mm, and the length is 4840-5250 mm.
3. The method of claim 1 or 2, wherein the roughness of the pre-treated base and clad laminate of step 1) is independently 1.8 μm or less.
4. The preparation method according to claim 3, wherein the height of the V-shaped support columns in the step 2) is 6-10mm, the interval between the V-shaped support columns is more than or equal to 200mm, and the V-shaped support columns are arranged in a rhombic structure.
5. The preparation method according to claim 4, wherein the distance between the periphery of the pre-treated clad plate in the step 2) and the periphery of the pre-treated base plate is more than or equal to 22mm.
6. The preparation method according to claim 4, wherein the material of the medicine box in step 3) is gray board paper, the thickness of the medicine box is 1.6-1.8 mm, and the height of the medicine box is 60-70 mm; the plastic film is tightly attached to and extends out of the periphery of the medicine box.
7. The production method according to any one of claims 4 to 6, wherein in the step 3), the height of the powdery emulsion explosive is 25 to 35mm; the height of the carborundum is 9-13 mm, and the water surface is 10-15 mm higher than the carborundum surface.
8. The method according to claim 7, wherein the detonator is inserted into the middle of the powdery emulsion explosive in the width direction of the clad plate, and the depth of the detonator in the powdery emulsion explosive is 14.5 to 15.5mm.
CN202211224951.8A 2022-10-09 2022-10-09 Preparation method of energy-gathering explosive welding composite board Pending CN115533292A (en)

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CN202211224951.8A CN115533292A (en) 2022-10-09 2022-10-09 Preparation method of energy-gathering explosive welding composite board

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