Ultrasonic-assisted laser welding device and method capable of swinging along with welding

An ultrasonic-assisted, laser welding technology, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of weak crushing degree of primary columnar crystals, unfavorable rapid overflow of bubbles, and difficulty in obtaining fine weld seam structure, etc. To avoid the formation of stomatal defects, increase the nucleation particles, and enhance the effect of the effect

Active Publication Date: 2022-07-22
SUN YAT SEN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The amplitude of the standing wave point in the static sound field is zero, which is not conducive to the rapid overflow of bubbles; at the same time, the static sound field has a weak degree of crushing of the primary columnar crystals, and it is difficult to obtain a fine weld structure

Method used

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  • Ultrasonic-assisted laser welding device and method capable of swinging along with welding
  • Ultrasonic-assisted laser welding device and method capable of swinging along with welding
  • Ultrasonic-assisted laser welding device and method capable of swinging along with welding

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Effect test

Embodiment 1

[0026] like figure 1 and figure 2 The shown ultrasonic-assisted laser welding device with swinging welding includes a base, a laser, an ultrasonic device, an axial moving mechanism and a swinging mechanism; the laser is installed above the worktable of the base, and the axial moving mechanism is installed on the support frame through the support frame. On the base, the ultrasonic device is installed on the axial moving mechanism; the swing mechanism includes a curved track, a gear, a transmission shaft and a motor, the motor is installed on one side of the base, and one end of the transmission shaft is connected to the motor. The power output shaft is connected, the other end of the transmission shaft is installed on the other side of the base through the bearing seat, the gear is installed in the curved track through the transmission shaft, and the gear meshes with the internal teeth of the curved track, the One end of the curved track is connected with the axial moving mec...

Embodiment 2

[0039] The ultrasonic-assisted laser welding device of the present embodiment is the same as the embodiment 1 except for the following technical features: Figure 4 As shown, the curved track includes 2 circular arc segments and 2 semicircular segments, and the two ends of the two circular arc segments are respectively connected with the two ends of the two semicircular segments; the inner side of the circular arc segment located below is provided with a The internal teeth of the gear mesh. In order to ensure the stability of the curved track, the curved track of this embodiment is formed together. The set curved track has a simple structure, is convenient to manufacture, and has high stability. This structure can also achieve the effect of driving the ultrasonic device to oscillate repeatedly.

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Abstract

The invention discloses an ultrasonic-assisted laser welding device and method capable of swinging along with welding. The ultrasonic-assisted laser welding device capable of swinging along with welding comprises a base, a laser device, an ultrasonic device, an axial moving mechanism and a swinging mechanism. The laser device is installed above a workbench of the base, the axial moving mechanism is installed on the base through a supporting frame, and the ultrasonic device is installed on the axial moving mechanism. The swing mechanism comprises a curve track, a gear, a transmission shaft and a motor, the motor is installed on one side of the base, one end of the transmission shaft is connected with a power output shaft of the motor, the other end of the transmission shaft is installed on the other side of the base through a bearing seat, and the gear is installed in the curve track through the transmission shaft; the gear is meshed with inner teeth of a curve track, and one end of the curve track is connected with an axial moving mechanism. Exhaust of a molten pool can be accelerated, the air hole defect can be eliminated, thick primary dendrites are effectively broken, nucleation particles are increased, the weld joint structure is refined, and the welding quality is improved.

Description

technical field [0001] The invention relates to welding technology, in particular to an ultrasonic-assisted laser welding device and method for swinging with welding. Background technique [0002] Compared with traditional fusion welding methods, laser welding has the advantages of high energy density, fast welding speed, and single-sided welding and double-sided forming. It has been used in aerospace, weapon manufacturing, shipbuilding, automobile manufacturing, pressure vessel manufacturing and other fields. Has a wide range of applications. However, the thermal action of the laser beam during the welding process causes the weld metal to melt and solidify, which inevitably causes the problem of coarse structure and internal pores in the weld, thus seriously reducing the bearing capacity of the joint. The application of ultrasound during the welding process can promote the escape of air bubbles from the weld. However, the ultrasonic vibration devices of traditional ultras...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/346B23K26/70
CPCB23K26/346B23K26/702
Inventor 胡琰莹湛亚琪马显锋杨卫岐
Owner SUN YAT SEN UNIV
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