High Frequency Vibration Laser Welding Process Based on Electromagnetic Vibrator

A technology of laser welding and high-frequency vibration, which is applied in the field of material processing engineering, can solve problems such as unfixed direction, difficult vibration frequency, and vibration energy dispersion, and achieve the effects of eliminating residual stress, improving comprehensive performance, and increasing vibration frequency

Active Publication Date: 2017-01-25
SHANGHAI UNIV OF ENG SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Because it relies on the drive of the motor, it is difficult to greatly increase the vibration frequency; and the eccentric wheel rotates in a circumferential direction, and its vibration energy is relatively dispersed and the direction is not fixed

Method used

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  • High Frequency Vibration Laser Welding Process Based on Electromagnetic Vibrator
  • High Frequency Vibration Laser Welding Process Based on Electromagnetic Vibrator
  • High Frequency Vibration Laser Welding Process Based on Electromagnetic Vibrator

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0035] In this embodiment, the 316L austenitic stainless steel plate of 170 (length) × 100 (width) × 3 (thickness) mm is used for laser self-fusion welding with IPG YLS-5000 high-power fiber laser on the working platform, and its specific operation is according to figure 1 Follow the steps shown in .

[0036] S1: Clamping and surface treatment of workpieces to be welded

[0037] Rigidly fix the backing plate and the stainless steel plate at the center of the working platform, and use a steel block to separate the backing plate and the stainless steel plate to prevent the stainless steel plate from being welded to the backing plate. The surface of the stainless steel plate is polished with 100# coarse sandpaper to remove the surface oxide layer and stains to prevent inclusions and pores in the molten pool during welding, and finally cleaned with ac...

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Abstract

The invention relates to a high-frequency vibration laser beam welding technology based on an electromagnetic type vibration exciter and belongs to the engineering field of material processing. The high-frequency vibration laser beam welding technology based on the electromagnetic type vibration exciter comprises the steps that a workpiece to be welded is fixed onto a working platform through a clamp; a function signal generator and a power amplifier are used to generate control signals; the electromagnetic type vibration exciter generates mechanical vibration according to the control signals and transmits the mechanical vibration to the working platform; the resonance frequency and vibration acceleration of the workpiece to be welded are determined; by conducting laser beam welding tests on the workpiece to be welded, welding parameters required by the workpiece to be welded are determined. By means of the technology, the vibration frequency can be raised substantially, excitation directions can be changed flexibly, the amplitude and frequency are output by the adoption of voltage control, and it is easy to conduct the automation control for reducing the cost.

Description

technical field [0001] The invention belongs to the field of material processing engineering, in particular to a high-frequency micro-vibration laser welding process based on an electromagnetic exciter. Background technique [0002] Laser welding is a high-energy beam welding method in which a high-power-density laser beam is used as a heat source for welding. The principle is to irradiate the focused laser beam to the surface of the workpiece, interact with the metal to be welded to generate heat, and the melted metal undergoes a cooling stage, and the solder and the weldment crystallize to form a weld. Compared with traditional welding methods, laser welding has the characteristics of high energy density, fast welding speed, small welding heat-affected zone, fine weld grains, and high-quality joints, so it is widely used in engineering. [0003] Vibration welding is a technology developed from vibration aging. A large number of studies and tests by domestic and foreign s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/21B23K26/60B23K26/70
CPCB23K26/20
Inventor 卢庆华何晓峰彭必荣陈轩张静
Owner SHANGHAI UNIV OF ENG SCI
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