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Welding device for compounding ultrasonic focusing sound field with molten pole arc welding

A melting electrode welding and arc welding technology, which is applied in the direction of arc welding equipment, welding equipment, non-electric welding equipment, etc., can solve the problems of reduced sound field energy density, unstable wire feeding speed, unfavorable welding process, etc.

Inactive Publication Date: 2011-01-19
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the characteristics of sound wave transmission, the radius of the radiation surface of the ultrasonic wave will gradually expand during the radiation process, resulting in a rapid decrease in the energy density of the sound field as the distance from the ultrasonic source increases.
At the same time, due to the small cross-sectional area of ​​the arc welding electrode, the ultrasonic power that can be radiated through the electrode is limited
In addition, the vibration of the welding electrode can easily lead to unstable factors such as poor conductive contact and unstable wire feeding speed during the welding process, which is not conducive to the stable and continuous welding process
The above characteristics limit the further development of the composite method of ultrasonic and arc welding

Method used

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  • Welding device for compounding ultrasonic focusing sound field with molten pole arc welding
  • Welding device for compounding ultrasonic focusing sound field with molten pole arc welding

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Effect test

Embodiment 1

[0008] Example 1: Combining figure 1 , the present invention is a welding device combined with ultrasonic focused sound field and melting electrode arc welding, which is composed of melting electrode welding wire (1), conductive rod (2), ultrasonic transducer (3), axial through hole (4) ultrasonic Composed of horn (5), welding nozzle (6), focusing plane (7), welding arc (8), workpiece to be welded (9), welding power source (10) and ultrasonic power source (11), the melting electrode welding wire ( 1) Pass through the conductive rod (2) and maintain a sliding contact state with it, and the conductive rod (2) surrounding the melting electrode wire (1) passes through the axis of the ultrasonic transducer (3) and ultrasonic horn (5) The through hole (4) makes the end of the melting electrode wire (1) in the ultrasonic propagation space radiated by the focusing plane (7), and the diameter of the axial through hole (4) is greater than the diameter of the conductive rod (2), so that ...

Embodiment 2

[0009] Embodiment 2: The present invention generates and amplifies ultrasonic vibrations through an ultrasonic transducer and a horn, and utilizes a special-shaped focusing surface processed on the end face of the horn to realize ultrasonic radiation convergence. The concentrated ultrasonic energy is further improved, and the ultrasonic wave is radiated through the focusing surface and the welding arc is directly compounded to achieve the purpose of improving welding efficiency and welding quality.

[0010] The main technical steps of the present invention are as follows:

[0011] (1) The ultrasonic generator is connected to the ultrasonic transducer through the electrode, and converts the electrical signal of the ultrasonic frequency into mechanical vibration of the ultrasonic frequency;

[0012] (2) The ultrasonic transducer is closely connected with the ultrasonic horn to amplify the ultrasonic vibration amplitude output by the ultrasonic transducer;

[0013] (3) The end f...

Embodiment 3

[0026] Example 3: Binding figure 1, the working process of the present invention is as follows: at first the workpiece (8) to be welded is fixed on the welding platform by the clamp. The ultrasonic power supply (11) is connected with the ultrasonic transducer (3), and the ultrasonic power is adjusted within the range of 1-5000W through the ultrasonic power supply (11). Utilize the ultrasonic transducer (3) to convert the ultrasonic frequency electric signal generated by the ultrasonic power supply (11) into ultrasonic vibration with a frequency between 15-100 kHz, and then amplify the amplitude to 10-150 μm through the ultrasonic horn (5) . The focusing surface (7) at the end of the ultrasonic horn (5) converges the ultrasonic radiation energy and directly radiates and outputs it to form an ultrasonic focused sound field. The conductive rod (2) and the melting pole welding wire (1) are fed through the axial through hole (4), and the end of the melting pole welding wire (1) i...

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Abstract

The invention provides a welding device for compounding an ultrasonic focusing sound field with molten pole arc welding for improving the energy density of ultrasonic, changing the arc shape and the energy density and realizing high-efficiency high-quality welding. The welding device comprises a molten pole welding wire, a conductive pole, an ultrasonic transducer, an axle center through hole ultrasonic amplitude transformer, a welding nozzle, a focusing surface, a welding arc, a workpiece to be welded, a welding power supply and an ultrasonic power supply, wherein the molten pole welding wire passes through the conductive pole and is in sliding contact with the conductive pole, the ultrasonic power supply is connected with the ultrasonic transducer through a cable, the ultrasonic transducer is connected with the ultrasonic amplitude transformer through a bolt, and the focusing surface is positioned at the lower end part of the ultrasonic amplitude transformer. The invention ensures that the arc is compressed to improve the arc energy density, increase weld penetration and improve weld formation. The invention can change the arc shape and the heat generation characteristic and the transition form of molten metal, realizes the high-efficiency high-quality welding, and enlarges the application range of the arc welding.

Description

(1) Technical field [0001] The invention relates to welding technology, in particular to a welding device combining ultrasonic focused sound field and molten electrode arc welding. (2) Background technology [0002] Welding has become an important metal processing technology in modern industrial production, and is widely used in industrial sectors such as metal structures, bridges, shipbuilding, aviation, aerospace, ocean engineering, and nuclear power engineering. With the development of science and technology, welding has developed into an independent discipline. Among them, the development process of fusion welding can be said to be the development process of welding heat source in a sense. Since the electric arc was developed in the 1880s, it has been continuously updated and improved as a welding heat source. With the continuous development of new materials and new structures in the industrial field and the continuous improvement of quality control requirements, new w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K28/02B23K20/10B23K9/173
Inventor 林三宝范阳阳范成磊杨春利
Owner HARBIN INST OF TECH
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