Ultrasonic assisted argon arc welding method and auxiliary device with adjustable sound source incidence angle and position

An incident angle, ultrasonic-assisted technology, applied in the direction of arc welding equipment, welding equipment, welding accessories, etc., can solve the problem that the ultrasonic horn and welding torch cannot be synchronized at the same time, the incident angle and position of the ultrasonic sound source cannot be adjusted, etc. problems, to achieve the effect of improving the mechanical properties of the weld metal, uniform and fine structure, and improving the mechanical properties

Active Publication Date: 2017-02-01
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its disadvantage is that the incident angle and position of the ultrasonic sound source in this process cannot be adjusted, and the simultaneous and synchronous movement trajectory of the ultrasonic horn and the welding torch cannot be realized to ensure welding stability.

Method used

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  • Ultrasonic assisted argon arc welding method and auxiliary device with adjustable sound source incidence angle and position
  • Ultrasonic assisted argon arc welding method and auxiliary device with adjustable sound source incidence angle and position
  • Ultrasonic assisted argon arc welding method and auxiliary device with adjustable sound source incidence angle and position

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Such as figure 1 and 2 As shown, an ultrasonic-assisted argon arc welding auxiliary device with adjustable sound source incidence angle and position, including an ultrasonic welding fixture and an ultrasonic follow-up system.

[0058] Wherein, the ultrasonic welding fixture includes an angle-adjustable insert 1-1 with a bevel, an adjustable distance pad 1-2, a height-adjustable pressure block 1-3 and a base 1-5, and the fixture is used for ultrasonic Assisted argon tungsten arc welding with adjustable sound source angle and position.

[0059] The vertical surface of the angle-adjustable insert 1-1 is flexibly connected to the first side of the distance-adjustable pad 1-2. The specific connection method is: the vertical surface of the angle-adjustable insert 1-1 is provided with For the dovetail groove, the first side of the distance-adjustable cushion block 1-2 is provided with a convex dovetail block matched with the dovetail groove, so as to realize the fixing of th...

Embodiment 2

[0070] Using the above-mentioned auxiliary device, the non-ferrous metal plate to be welded is 180*100*6mm copper plate for ultrasonic-assisted tungsten argon arc welding, and the welding steps are as follows:

[0071] (1) Make a V-shaped groove on the copper plate, and use an ultrasonic welding fixture to clamp the copper plate, so that the non-groove side of the copper plate is in close rigid contact with the base 1-5 of the ultrasonic welding fixture, as figure 1 shown. Then fix the copper plate and the ultrasonic welding fixture on the welding platform.

[0072] (2) Replace the angle-adjustable insert 1-1, the angle between the slope of the angle-adjustable insert 1-1 and its bottom surface is 90°, so that the sound wave is incident in the form of a transverse wave, and the distance between the adjustable pad 1-2 The thickness is 10mm, and then fixed with a U-shaped fixture to realize the tight and rigid contact between the upper, lower and side surfaces of the ultrasonic...

Embodiment 3

[0079] Use the above-mentioned auxiliary device to perform ultrasonic-assisted argon tungsten arc welding on the red copper plate to be welded with a non-ferrous metal plate size of 180*100*6mm. The welding steps are as follows:

[0080] (1) Make a V-shaped groove on the copper plate, and use an ultrasonic welding fixture to clamp the copper plate, so that the non-groove side of the copper plate is in close rigid contact with the base 1-5 of the ultrasonic welding fixture, as figure 1 shown. Then fix the copper plate and the ultrasonic welding fixture on the welding platform.

[0081] (2) Remove the angle adjustable insert 1-1, so that the ultrasonic horn 16 is directly applied on the upper surface of the distance adjustable pad 1-2, and the thickness of the distance adjustable pad 1-2 is 10mm, so that the sound wave Incidence in the form of longitudinal waves.

[0082] (3) Clamp the ultrasonic horn 16 on the ultrasonic servo system, adjust the height of the welding fixture ...

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Abstract

The invention discloses an ultrasonic assisted argon arc welding method capable of adjusting a sound source incidence angle and position and an assisting device. The assisting device comprises an ultrasonic welding fixture and an ultrasonic servo system, and the ultrasonic servo system makes contact with the ultrasonic welding fixture through an ultrasonic amplitude transformer in ultrasonic equipment. The method comprises the steps of preparation before welding, wherein a butt joint end bevel of a workpiece to be welded is machined to be in a V shape, the ultrasonic welding fixture is adopted to clamp the workpiece to be welded, the welding fixture is fixed on a welding platform, and the ultrasonic amplitude transformer of the ultrasonic equipment is clamped in the ultrasonic servo system to enable the tail end of the ultrasonic amplitude transformer to make contact with an inclined plane of an angle-adjustable insert in the welding fixture; welding, wherein technological parameters of argon arc welding are determined, an argon arc welding machine power supply is started, welding gun arc striking is performed, and after an electric arc is stable, an ultrasonic power supply of the ultrasonic equipment is started to output sound waves. According to the ultrasonic assisted argon arc welding method capable of adjusting the sound source incidence angle and position and the assisting device, the problem that a hot crack is serious during non-ferrous metal fusion welding can be effectively solved, the crystallization direction can be effectively changed, and crystalline grains can be spherized and refined.

Description

technical field [0001] The invention relates to the technical field of welding metallurgy, in particular to an ultrasonic-assisted argon arc welding method with adjustable sound source incident angle and position. Background technique [0002] Although copper alloys and aluminum alloys have completely different physical and mechanical properties, welding hot cracks will appear during welding, especially argon tungsten arc welding (GTAW), which restricts the application of copper alloys and aluminum alloys. Except for the external factors of welding stress and deformation, the appearance of hot cracks is related to the temperature range, composition, proportion and distribution of eutectic eutectic during solidification. For copper and copper alloys, due to the intrusion of oxygen into the molten pool during the welding process, Cu will form during solidification. 2 The low-melting-point eutectic structure composed of O and Cu is distributed between the solidified α-Cu grain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/167B23K9/235B23K9/23B23K9/32B23K103/08
CPCB23K9/167B23K9/23B23K9/235B23K9/32B23K2103/08
Inventor 李一楠彭子龙郭峰王优强李志文张善彬张磊
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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