Explosive welding device and method

Abstract

The invention relates to a new method applied to explosive welding technology, in particular to an explosive welding device and method, which solves the problem of poor welding quality of existing explosive welding composite plates. The device includes a strong light source and an explosive coating; the above explosive coating is a photosensitive explosive coating coated on the surface of the target object to be welded; the strong light source is used to irradiate and detonate the photosensitive explosive coating to ensure that the entire surface of the photosensitive explosive coating is simultaneously Detonate. Photosensitive explosives are sensitive to light. You can use a spray gun to spray photosensitive explosives onto the surface of the target object to be welded, and detonate the photosensitive explosive coating through strong light irradiation. A stable detonation wave can be achieved in a thin coating. Realize large-area synchronous and reliable detonation. It can be applied to explosive welding of plate to plate, pipe to pipe, special-shaped parts, etc.

Description

technical field

[0001] The invention relates to a new method applied to explosive welding technology, in particular to a light-initiated explosive welding device and method. Background technique

[0002] Explosive welding is to use the huge energy generated by the explosion of explosives to weld two or more metals with different melting points, different strengths, different thicknesses, different thermal expansion coefficients and large differences in hardness. Unique advantages, even metal and non-metal materials such as ceramics can be welded, showing irreplaceable in the fields of chemical industry, petroleum, environmental protection (nuclear waste treatment), electric power, shipbuilding, nuclear industry, aerospace, superconducting materials, etc. important role.

[0003] The quality of explosively welded composite panels is closely related to the way of detonation. At present, there are two types of initiation methods used for explosive welding: center initiation a...

Examples

Embodiment 1

[0042] like figure 1 As shown, the object to be welded in this embodiment is the doubler plate 5, and the main explosive is laid on the surface of the doubler plate 5 to form the main explosive layer 4; then the photosensitive explosive is coated on the surface of the main explosive layer 4 to form a photosensitive explosive coating 3. Applying explosives can be done remotely by a spray robot or robotic arm.

[0043]When explosively welding plates, the metal wire 1 undergoes an electric explosion under the action of a strong current to generate strong light 2, and the strong light 2 irradiates the photosensitive explosive coating 3 coated on the surface of the main explosive layer 4, so that the photosensitive explosive coating 3 is completely coated. The layer explodes at the same time, and generates a detonation wave to detonate the main explosive layer 4 on the lower side. The main explosive layer 4 on the lower side detonates at the same time and acts on the doubler plate...

Embodiment 2

[0045] The difference from Embodiment 1 is that this embodiment does not include a main explosive layer.

[0046] like figure 2 As shown, when explosively welding plates, the metal wire 1 undergoes an electric explosion under the action of a strong current to generate strong light 2, and the strong light 2 irradiates the photosensitive explosive coating 3 coated on the surface of the double board 5, so that the photosensitive explosive coating 3 The entire coating surface explodes at the same time and acts on the doubler plate 5, causing the doubler plate 5 to hit the base plate 6 to achieve the purpose of welding. One or more metal wires 1 can be used as the light source of the strong light 2 to ensure uniform illumination of the photosensitive explosive coating 3 and improve the discharge energy of the detonating device to ensure the synchronization of large-area detonation of the photosensitive explosive 3; A certain gap is set between 5 and the substrate 6, and the two c...

Embodiment 3

[0048] like image 3 As shown, the welding target of the present embodiment is a multiple tube 7, and the main explosive layer 4 is laid on the inner surface of the multiple tube 7, and then the surface of the main explosive layer 4 is coated with a photosensitive explosive to form a photosensitive explosive coating 3. The metal wire 1 is placed in the multiple tube 7 .

[0049] When explosively welding pipes, the metal wire 1 undergoes an electric explosion under the action of a strong current to generate strong light 2, and the strong light 2 irradiates the photosensitive explosive coating 3 coated on the surface of the main explosive layer 4, so that the photosensitive explosive coating 3 is completely coated. Layers explode simultaneously, and generate detonation waves to detonate the outer main explosive layer 4, and the outer main explosive layer detonates at the same time and acts on the multiple tube 7, causing the multiple tube 7 to hit the base tube 8 to achieve the ...

technical field

[0001] The invention relates to a new method applied to explosive welding technology, in particular to a light-initiated explosive welding device and method. Background technique

[0002] Explosive welding is to use the huge energy generated by the explosion of explosives to weld two or more metals with different melting points, different strengths, different thicknesses, different thermal expansion coefficients and large differences in hardness. Unique advantages, even metal and non-metal materials such as ceramics can be welded, showing irreplaceable in the fields of chemical industry, petroleum, environmental protection (nuclear waste treatment), electric power, shipbuilding, nuclear industry, aerospace, superconducting materials, etc. important role.

[0003] The quality of explosively welded composite panels is closely related to the way of detonation. At present, there are two types of initiation methods used for explosive welding: center initiation a...

Examples

Embodiment 1

[0042] like figure 1 As shown, the object to be welded in this embodiment is the doubler plate 5, and the main explosive is laid on the surface of the doubler plate 5 to form the main explosive layer 4; then the photosensitive explosive is coated on the surface of the main explosive layer 4 to form a photosensitive explosive coating 3. Applying explosives can be done remotely by a spray robot or robotic arm.

[0043]When explosively welding plates, the metal wire 1 undergoes an electric explosion under the action of a strong current to generate strong light 2, and the strong light 2 irradiates the photosensitive explosive coating 3 coated on the surface of the main explosive layer 4, so that the photosensitive explosive coating 3 is completely coated. The layer explodes at the same time, and generates a detonation wave to detonate the main explosive layer 4 on the lower side. The main explosive layer 4 on the lower side detonates at the same time and acts on the doubler plate...

Embodiment 2

[0045] The difference from Embodiment 1 is that this embodiment does not include a main explosive layer.

[0046] like figure 2 As shown, when explosively welding plates, the metal wire 1 undergoes an electric explosion under the action of a strong current to generate strong light 2, and the strong light 2 irradiates the photosensitive explosive coating 3 coated on the surface of the double board 5, so that the photosensitive explosive coating 3 The entire coating surface explodes at the same time and acts on the doubler plate 5, causing the doubler plate 5 to hit the base plate 6 to achieve the purpose of welding. One or more metal wires 1 can be used as the light source of the strong light 2 to ensure uniform illumination of the photosensitive explosive coating 3 and improve the discharge energy of the detonating device to ensure the synchronization of large-area detonation of the photosensitive explosive 3; A certain gap is set between 5 and the substrate 6, and the two c...

Embodiment 3

[0048] like image 3 As shown, the welding target of the present embodiment is a multiple tube 7, and the main explosive layer 4 is laid on the inner surface of the multiple tube 7, and then the surface of the main explosive layer 4 is coated with a photosensitive explosive to form a photosensitive explosive coating 3. The metal wire 1 is placed in the multiple tube 7 .

[0049] When explosively welding pipes, the metal wire 1 undergoes an electric explosion under the action of a strong current to generate strong light 2, and the strong light 2 irradiates the photosensitive explosive coating 3 coated on the surface of the main explosive layer 4, so that the photosensitive explosive coating 3 is completely coated. Layers explode simultaneously, and generate detonation waves to detonate the outer main explosive layer 4, and the outer main explosive layer detonates at the same time and acts on the multiple tube 7, causing the multiple tube 7 to hit the base tube 8 to achieve the ...

Images