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A high-speed impact welding method, welding system and application

A high-speed impact, welding method technology, applied in welding equipment, non-electric welding equipment, metal processing equipment and other directions, can solve the problems of large-area virtual welding, affecting the overall performance of the weld, and the discontinuity of the weld, achieving a wide range of application prospects, The effect of improving the overall strength and welding quality, and increasing the effective welding area

Active Publication Date: 2021-12-03
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing research and application of high-speed impact welding, whether it is welding of metal plates or pipes, there will be discontinuous welds and large-area virtual welds, which greatly affect the overall performance of the welds and reduce the Welding quality of weldments

Method used

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  • A high-speed impact welding method, welding system and application
  • A high-speed impact welding method, welding system and application
  • A high-speed impact welding method, welding system and application

Examples

Experimental program
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Effect test

Embodiment 1

[0063] like image 3 As shown, the present invention proposes a high-speed impact welding system, the load generating device 2 is a flat coil magnet device, which includes a welding section 21 and a circuit section 22 arranged parallel to the flying part 4, and the welding section 21 The cross-sectional area is smaller than the cross-sectional area of ​​the loop section 22; the loop section 22 is used to generate a pulsed magnetic field when the pulse current is passed, and acts on the non-welding area of ​​the flying piece 4 to generate electromagnetic force to drive the flying piece 4 The non-welding area is close to the positioning device 5; the welding section 21 is used to generate a pulsed magnetic field when the pulse current is passed, and acts on the welding area of ​​the flying part 4 to generate electromagnetic force to drive the flying part 4 The welding area moves away from the welding section 21 to achieve welding with the base member 6 .

[0064] Specifically, ...

Embodiment 2

[0066] like Figure 4 As shown, the present invention proposes a high-speed impact welding system, the load generating device 2 is a uniform pressure coil device, including a coil 23 and a conductive channel 24; the conductive channel 24 is placed on the flying part 4 and connected to the The flying part 4 forms a closed circuit; the coil 23 is arranged inside the conductive channel 24 and above the welding area of ​​the flying part 4; the coil 23 is used to generate a pulsed magnetic field when a pulse current is passed; the closed The circuit is used to induce the opposite eddy current under the action of the pulsed magnetic field, and then generate electromagnetic repulsion force to drive the welding area of ​​the flying part 4 to move away from the coil 23 , so as to achieve welding with the base part 6 .

[0067] Specifically, when the coil 23 passes a large pulse current, the conductive channel 24 and the flying part 4 will induce an eddy current in the opposite directio...

Embodiment 3

[0069] like Figure 5 As shown, the present invention proposes a high-speed impact welding system, the load generating device 2 is an energetic explosive device 25; the energetic explosive device 25 is placed above the flying part 4, and it is used to After the pulse current heats up and explodes, a shock wave is generated. The shock wave acts on the welding area of ​​the flying part 4 and drives the flying part 4 to hit the base part 6 to realize welding.

[0070] Specifically, an energetic explosive is placed above the flying piece 4, preferably, the energetic explosive is a wire foil, and the pulse power supply discharges the metal wire foil, so that the temperature of the wire foil is raised instantaneously. Under the condition of high temperature and energization, the metal wire foil gasifies and reacts with the liquid in the welding chamber to produce a large amount of hydrogen gas, which causes an explosion. The high-pressure gas increases the pressure in the welding c...

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Abstract

The invention discloses a high-speed impact welding method, welding system and application, which belong to the technical field of dissimilar metal welding. The method comprises the following steps: obtaining a welding window of a substrate to be welded; Process the wave structure; apply the external field energy to the surface of the flying part, drive the flying part to deform and collide with the base part, generate a jet phenomenon at the collision point and diffuse between atoms, and realize the flying part Welding with the base piece. The present invention processes a specific shape with a certain spatial distribution in the area to be welded of the base, and the shape features can provide a suitable collision angle for each collision point as much as possible, so that these collision points can be welded. Within the window of impact velocity and angle, continuous welding of large area and large area can be realized, which can improve the quality of weld seam, increase the welding area, and improve the overall performance of welded parts.

Description

technical field [0001] The invention belongs to the technical field of dissimilar metal welding, and more specifically relates to a high-speed impact welding method, welding system and application. Background technique [0002] Dissimilar metal weldments have significant advantages in key performance parameters such as strength, weight and corrosion resistance, and have broad application prospects in aerospace and automobile manufacturing industries. However, the electrical resistivity, thermal conductivity, specific heat capacity, melting point and other physical parameters of the two types of alloys are quite different, and the solid solubility between the two is low, so it is easy to form a brittle reaction layer at the interface, and it is difficult to weld, braze, etc. Traditional welding methods such as welding achieve good welding of two metals. High-speed impact welding uses chemical energy, electromagnetic field energy, high-energy-density light energy, high-energy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K20/02B23K20/06B23K20/08B23K20/26
CPCB23K20/02B23K20/06B23K20/08B23K20/26
Inventor 李亮李潇翔赖智鹏李昌兴韩小涛曹全梁张毅
Owner HUAZHONG UNIV OF SCI & TECH
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