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Explosive welding method for large-size metal composite plate

A metal composite board and explosive welding technology, which is applied in welding equipment, metal processing equipment, non-electric welding equipment, etc., can solve the problems of reduced plate-layer bonding rate, easy delamination, and increased exhaust path, so as to improve processing performance and use performance, improve explosion continuity, reduce the effect of exhaust path

Pending Publication Date: 2021-12-14
舞钢神州重工金属复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the explosive welding process usually faces limit size limitations when explosively welding large-scale metals
[0003] For the explosive welding process of large-sized metal composite plates, due to the excessively fast explosion speed and the long length and thickness of the plates, within the explosion time, problems such as exhaust path growth, boundary effects, and detonation are usually faced, resulting in two The bonding ratio between the individual plies is reduced, especially the edge bonding strength is not satisfactory
Metal composite panels are prone to delamination, cracking and other phenomena during subsequent processing and use, and their performance is seriously degraded

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The steel plate is used as the base plate, and the aluminum alloy plate is used as the double plate. The base plate and the double plate are decontaminated, polished, and polished to expose the metallic luster on the joint surface, and the roughness of the joint surface is 1.4 μm. Among them, the length, width and thickness of the substrate are 16600mm, 2100mm and 57mm respectively, and the length, width and thickness of the doubler board are 16670mm, 2210mm and 8mm respectively. In the length direction, both sides of the doubler board are 35mm longer than the base, and in the width direction, The two sides of the doubler board are 45mm and 65mm wider than the base plate respectively.

[0045] Mechanical impact treatment and heat treatment were performed on the polished substrate and doubler plate under the same conditions. During the mechanical processing, the impact energy was 4J, the impact rate was 65 times / s, and the time was 5 minutes. After the mechanical shock t...

Embodiment 2

[0050] The copper plate is used as the base plate, and the stainless steel plate is used as the cladding plate. The base plate and cladding plate are decontaminated, polished, and polished to expose the metallic luster on the joint surface, and the roughness of the joint surface is 1.45 μm. Among them, the length, width and thickness of the substrate are 16900mm, 2180mm and 67mm respectively, and the length, width and thickness of the doubler board are 16990mm, 2285mm and 11mm respectively. In the length direction, both sides of the doubler board are 45mm longer than the base, and in the width direction, The two sides of the doubler board are 45mm and 60mm wider than the base plate respectively.

[0051] Mechanical impact treatment and heat treatment were performed on the polished substrate and doubler plate under the same conditions. During the mechanical processing process, the impact energy was 6J, the impact rate was 75 times / s, and the time was 9 minutes. After the mechan...

Embodiment 3

[0056] The copper alloy plate is used as the base plate, and the titanium plate is used as the double plate. The base plate and the double plate are decontaminated, polished, and polished to expose the metallic luster on the joint surface, and the roughness of the joint surface is 1.4 μm. Among them, the length, width and thickness of the substrate are 16700mm, 2150mm and 62mm respectively, and the length, width and thickness of the doubler board are 16780mm, 2250mm and 9mm respectively. In the length direction, both sides of the doubler board are 40mm longer than the base, and in the width direction, The two sides of the doubler board are 45mm and 55mm wider than the base plate respectively.

[0057] Mechanical impact treatment and heat treatment were performed on the polished substrate and doubler plate under the same conditions. During the process of mechanical processing, the impact energy was 5J, the impact rate was 70 times / s, and the time was 7 minutes. After the mechan...

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Abstract

The invention belongs to the technical field of explosive welding, and provides an explosive welding method for a large-size metal composite plate. The explosive welding method comprises the following steps that a base plate and a composite plate are sequentially subjected to mechanical shock treatment, heating treatment and installation to obtain a composite plate; after a detonating cord is fixed in the length direction of the composite plate, explosive is laid on the composite plate; and the composite plate is subjected to explosive welding with the middle position of the detonating cord as a detonating point, and the large-size metal composite plate is obtained. The bonding rate of the large-size metal composite plate obtained through the method reaches 99.8% or above, cracks and boundary effects do not exist, the bonding strength of a welding face is high, and the layering and desoldering phenomena do not occur; and according to the method, an exhaust path can be reduced, the detonation velocity of the explosive can be reduced, the explosion time is prolonged, the explosion continuity is improved, and the phenomenon of explosion failure is avoided.

Description

technical field [0001] The invention relates to the technical field of explosive welding, in particular to an explosive welding method for large-scale metal composite plates. Background technique [0002] Explosive welding is a connection technology that uses the huge energy generated by the explosion of explosives as an energy source to make metals plastically deform, melt and achieve interatomic bonding. Welding does not require the interface of the two materials to melt, and there is little or no diffusion at the junction of the metals or alloys to be joined, so each metal or alloy can maintain its original characteristics, which allows materials with large differences in melting points to be combined. Compared with the conventional dissimilar metal welding process, the variety and quantity of dissimilar metals for explosive welding are not limited. However, the explosive welding process usually faces the limit size limit when explosively welding large-scale metals. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/08
CPCB23K20/08
Inventor 冯健侯国亭
Owner 舞钢神州重工金属复合材料有限公司
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