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Electromagnetic pulse welding method for aluminium plate and steel plate

A technology of electromagnetic pulse and welding method, which is applied in the direction of welding equipment, non-electric welding equipment, metal processing equipment, etc., and can solve the problems of restricting the application of aluminum/steel composite structures, low strength of aluminum/steel welded joints, and the existence of block steel in welded joints, etc. problem, to achieve the effect of avoiding contact, improving performance, and negative temperature coefficient of resistance

Active Publication Date: 2019-04-12
CHONGQING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electromagnetic pulse welding involves interdisciplinary fields such as electromagnetism, materials science, elastoplastic mechanics, and dynamics, and the forming system is complex
[0005] Although there have been literatures on the performance of electromagnetic pulse welding of aluminum steel, for example: "Simulation of Electromagnetic Pulse Welding Process of Aluminum Plate Based on LS-DYNA" published by Guo Ming; Microstructure and Performance Analysis of Welding Interface", the latter optimizes the electromagnetic pulse welding process parameters, but there are still problems such as low strength of aluminum / steel welded joints, many intermetallic compounds at the interface, especially the presence of block steel in welded joints
Therefore, how to improve the performance of aluminum / steel electromagnetic pulse welding, reduce the generation of intermetallic compounds at the interface, and reduce the inclusion of massive steel in the welded joints are technical problems that need to be solved urgently, otherwise it will seriously limit the application of aluminum / steel composite structures in manufacturing

Method used

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  • Electromagnetic pulse welding method for aluminium plate and steel plate
  • Electromagnetic pulse welding method for aluminium plate and steel plate
  • Electromagnetic pulse welding method for aluminium plate and steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The dimensions of aluminum plate and stainless steel plate are both 20mm×100mm×2mm. The specific steps of electromagnetic pulse welding are as follows:

[0039] (1) Use sandpaper to polish off the oil on the surface of the aluminum plate, scrub it with acetone and dry it, coat the surface of the aluminum plate with zirconia solution, mark the specific position of spraying zirconia on the aluminum plate, and use absolute ethanol to prepare the zirconia powder Form a zirconia solution with a concentration of 40%. Use a 5mL dropper to absorb the zirconia solution, then pour it into a 10ml watering can, choose a place 10-20mm away from the doubler board horizontally, and use a watering can to evenly spray a layer of zirconia solution (5ml solution has just been used up), and then dried at room temperature, the effect of the aluminum plate after spraying the zirconia solution after drying is shown in image 3 As shown, the white part is the coated zirconia, the length × widt...

Embodiment 2

[0045] The dimensions of aluminum plate and stainless steel plate are both 20mm×100mm×2mm. The specific steps of electromagnetic pulse welding are as follows:

[0046] (1) Use sandpaper to polish off the oil on the surface of the aluminum plate, scrub it with acetone and dry it, then coat the surface of the aluminum plate with zirconia powder, mark the specific position of spraying zirconia on the aluminum plate, and use absolute ethanol to configure the zirconia into Zirconia solution, the concentration is 30%, use a 10ml dropper to absorb the zirconia solution, then pour it into a 10ml watering can, choose a place 10-20mm away from the doubler board horizontally, and spray it evenly on the mark on the upper surface of the doubler board layer of zirconia solution (10ml solution is just used up), and then dry at room temperature.

[0047] (2) Place the aluminum plate and steel plate to be welded on the welding fixture with the aluminum plate as the double plate and the steel p...

Embodiment 3

[0055] The dimensions of aluminum plate and stainless steel plate are both 20mm×100mm×2mm. The specific steps of electromagnetic pulse welding are as follows:

[0056] (1) Use sandpaper to polish off the oil on the surface of the aluminum plate, scrub it with acetone and dry it, then coat the surface of the aluminum plate with zirconia powder, mark the specific position of spraying zirconia on the aluminum plate, and use absolute ethanol to configure the zirconia into The concentration of zirconia solution is 35%. Accurately measure 8mL of zirconia solution, pour it into a 10ml watering can, choose a place 10-20mm away from the doubler board horizontally, and spray a layer of zirconia evenly on the mark on the upper surface of the doubler board with a watering can. Zirconium solution (8ml solution is just used up), and then dry at room temperature.

[0057] (2) Place the aluminum plate and steel plate to be welded on the welding fixture with the aluminum plate as the double pl...

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Abstract

The invention belongs to the technical field of application welding, and particularly discloses an electromagnetic pulse welding method for an aluminium plate and a steel plate. The electromagnetic pulse welding method comprises the steps of coating Zirconia on the to-be-welded surface of the aluminium plate, and then enabling the to-be-welded surface of the aluminium plate to face the to-be-welded surface of the steel plate directly; and finally, welding the aluminium plate with the steel plate through electromagnetic pulses. According to the method, the generation of Fe-Al intermetallic compounds can be avoided effectively, and steel block inclusions in a welded joint are reduced, so that the electromagnetic pulse welding strength of aluminium / steel is improved.

Description

technical field [0001] The invention relates to the field of applied welding technology, in particular to an electromagnetic pulse welding method for an aluminum plate and a steel plate. Background technique [0002] In order to reduce energy consumption and achieve "green manufacturing", lightweight design is the most direct and effective means. Therefore, aluminum and aluminum alloys and other lightweight, corrosion-resistant materials have become substitutes for traditional steel, and aluminum / steel composite structures There are more and more applications in aerospace, shipbuilding, railway and other fields. Especially in the automotive field, aluminum alloy instead of steel has become the focus of product design. However, due to the large difference in melting point between aluminum alloy and steel, brazing or welding In this method, when the aluminum alloy is melted, the steel is still in a solid state. Continue to increase the energy until the steel is melted. The den...

Claims

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Application Information

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IPC IPC(8): B23K20/06B23K20/26B23K20/24B23K20/227
CPCB23K20/06B23K20/2275B23K20/24B23K20/26
Inventor 迟露鑫甘贵生杨栋华王新鑫秦小龙
Owner CHONGQING UNIV OF TECH
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