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Aluminum alloy pulse ultrasound and electric arc composite welding device and method

An ultrasonic arc and composite welding technology, applied in the field of aluminum alloy welding, can solve problems such as affecting product quality and performance, weld metal cracks, loose material, etc., to improve arc instability, refine weld structure, and improve energy. The effect of distribution

Inactive Publication Date: 2015-07-01
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Aluminum and its alloy materials not only have small specific gravity, high strength, high thermal conductivity, strong corrosion resistance, but also have excellent physical and mechanical properties, so they have been widely used in aviation, aerospace, automobile, machinery manufacturing and other industries in recent years field, and the corresponding aluminum alloy welding due to stress concentration produces severe deformation, or weld pores, slag inclusions, incomplete penetration and other defects, resulting in weld metal cracks or loose materials, seriously affecting product quality and performance

Method used

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  • Aluminum alloy pulse ultrasound and electric arc composite welding device and method
  • Aluminum alloy pulse ultrasound and electric arc composite welding device and method
  • Aluminum alloy pulse ultrasound and electric arc composite welding device and method

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Embodiment 1

[0021] combine figure 1 , an aluminum alloy pulsed ultrasonic arc hybrid welding device, including a welding power source 1, an electrode 2, a transducer 9, and an ultrasonic generating system, the welding power source 1 is connected to the electrode 2, the electrode passes through the center of the transducer, and the ultrasonic generating system and The transducer 9 is connected, the welding power supply 1, the electrode 2 and the workpiece 4 to be welded form a complete arc 3 arc striking circuit system. According to different welding methods, the electrode 2 is a non-melting electrode tungsten electrode or a melting electrode welding wire. This device also includes a current Voltage detection circuit 13, DSP processor 14, single-chip microcomputer 10, triode switch circuit 11 and drive circuit 12; Current and voltage detection circuit 13 is connected with the output end of matching circuit 8 of ultrasonic generating system, current and voltage detection circuit 13 and DSP p...

Embodiment 2

[0027] combine image 3 , an aluminum alloy pulsed ultrasonic arc hybrid welding method. It includes the following steps: ① Check the welding equipment before welding, clean the debris at the welding position of the workpiece to be welded, place the transducer above the workpiece to be welded, and fix the workpiece to be welded at the same time. The diameter of the lower surface of the transducer is 35mm. Non-melting electrode aluminum alloy plate welding is more suitable for thin plate welding with a thickness of less than 3mm. The distance between the upper surface of the workpiece to be welded and the lower end surface of the transducer is 12-28mm, while the melting electrode welding aluminum alloy plate is suitable for thick plate welding. The distance between the lower end faces of the device is required to be 5-15mm. ② During welding, first start the welding power supply 1 to start the arc, and then start the single-chip microcomputer 10 to control the opening and clos...

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Abstract

The invention discloses an aluminum alloy pulse ultrasound and electric arc composite welding device and method. Based on ultrasound and electric arc composite welding, the device further comprises a current and voltage detection circuit, a DSP, a single chip microcomputer, a triode switch circuit and a drive circuit. The current and voltage detection circuit is connected with the output end of a matching circuit of an ultrasound generation system. The current and voltage detection circuit is connected with the DSP. The DSP is connected with the drive circuit. The single chip microcomputer is connected with the triode switch circuit. The triode switch circuit is connected with the drive circuit. The drive circuit is connected with a DC / AC full-bridge inversion circuit of the ultrasound generation system. According to the welding method, ultrasound is applied to conduct pulsing processing, and aluminum alloy pulse ultrasound and electric arc composite welding is achieved. The aluminum alloy pulse ultrasound and electric arc composite welding device and method have the advantages of ordinary ultrasound and electric arc composite welding, the electric arc stiffness can be improved, weld penetration is increased, grains are refined, the size of molten drops is reduced, transition frequency is increased, splashing is reduced, high-quality welding under a common welding environment is achieved, aluminum alloy welding pores, welding cracks and the like can be reduced effectively, the microstructure of weld metal is optimized, and the mechanical property of welding connectors is improved remarkably.

Description

technical field [0001] The invention relates to the field of aluminum alloy welding, in particular to an aluminum alloy pulse ultrasonic arc composite welding device and a welding method thereof. Background technique [0002] Aluminum and its alloy materials not only have small specific gravity, high strength, high thermal conductivity, strong corrosion resistance, but also have excellent physical and mechanical properties, so they have been widely used in aviation, aerospace, automobile, machinery manufacturing and other industries in recent years field, and the corresponding aluminum alloy welding due to stress concentration produces severe deformation, or weld pores, slag inclusions, incomplete penetration and other defects, resulting in weld metal cracks or loose materials, seriously affecting product quality and performance. Therefore, how to optimize the welding technology of aluminum alloy has become a hot research issue. Ultrasonic waves are widely used in the field...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K28/02
CPCB23K28/02B23K2103/10
Inventor 范成磊谢伟峰杨春利林三宝童赫
Owner HARBIN INST OF TECH
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