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Explosion welding method for low melting point metal composite plate

A low-melting-point metal, explosive welding technology, applied in welding equipment, metal processing equipment, non-electric welding equipment, etc., can solve the problems of complicated explosive welding process, increase the number of explosive welding, decrease processing output, etc., and reach the welding parameter range. The effect of increasing and reducing the cost of explosive welding and increasing the upper limit of explosive welding

Inactive Publication Date: 2005-03-02
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The secondary explosive welding increases the number of explosive welding, which complicates the explosive welding process, greatly reduces the processing output, and also greatly increases the production cost.

Method used

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  • Explosion welding method for low melting point metal composite plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Explosive welding of aluminum-steel composite panels is carried out according to the layout of the attached drawings. The thickness of the L2 pure aluminum cladding 2 is 29 mm, the intermediate transition thin plate layer 3 is made of 1 mm ordinary steel plate, and the base plate 4 is 40 mm ordinary carbon steel plate. Explosive 1 uses 40mm thick granular ammonium oil explosives with a density of 0.85g cm -3 , adjust the detonation velocity at 2100~2300m·s -1 , the upper shelf height 5 is 8mm, and the lower shelf height 6 is 2mm. After explosive welding, the sample is cut for tensile strength test. The interface is firmly bonded, the fracture appears on the aluminum side, and the interface tensile strength is greater than 83MPa. In contrast, in the explosive welding without the transition thin steel plate 3, the base cladding plate completely bounced off after the explosion, and no welding was formed.

Embodiment 2

[0013] According to the explosive welding parameters of Example 1, the intermediate transition thin plate 3 was replaced with a 1.5mm copper plate, and the interface strength was checked after the explosive welding. The fracture appeared on the aluminum side, and the interface tensile strength was greater than 83MPa.

Embodiment 3

[0015] According to the explosive welding parameters of Example 1, the intermediate transitional thin plate 3 was replaced with a 0.5mm plain carbon steel plate, and the interface strength was checked after the explosive welding. The fracture appeared on the aluminum side, and the interface tensile strength was greater than 83MPa.

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Abstract

The present invention belongs to the field of explosion welding technology and provides one kind of explosion welding method for low melting point alloy plates. After one thin transition metal layer is set between the covering plate of low melting point metal and the base plate, once explosion welding is performed to manufacture composite low melting point metal plate. The present invention may be sued in manufacturing composite plate of Al, Mg, Pb, Sn and their alloy, and has the advantages of making thick composite low melting point alloy plate in once explosion, low cost, high production efficiency, raised upper explosion limit, increased welding parameter range and high finished product rate.

Description

technical field [0001] The invention belongs to the field of manufacturing metal composite plates, and in particular relates to an explosive welding production method of low-melting point metal composite plates. Background technique [0002] The explosive welding (or explosive composite) method has been widely used in the manufacture of various metal composite panels, which can produce various composite panels such as stainless steel-steel, aluminum-steel, titanium-steel, copper-steel, copper-aluminum, etc. These composite panels It is mainly used in equipment manufacturing in chemical industry, petroleum, water conservancy, electric power engineering and other industries. In the manufacture of these devices, it is often necessary to use aluminum, magnesium, lead, tin and their alloys as composite layers. However, these composite layers have low melting points. During explosive welding, especially when welding thicker composite layers, the welding parameter window It become...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/08
Inventor 李晓杰
Owner DALIAN UNIV OF TECH
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