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Electric arc method for exciting ultrasonic waves

An ultrasonic and electric arc technology, which is applied in the field of melting and non-melting electrode arc welding and metal arc smelting, to achieve good economic benefits, improve welding or smelting effects, and broad application prospects

Inactive Publication Date: 2004-05-12
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This technology uses ultrasonic focusing probes to achieve non-coupling welding of plastics, and can only weld plastic materials with high acoustic impedance and low melting point, but it is helpless for metal parts used in large quantities

Method used

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  • Electric arc method for exciting ultrasonic waves
  • Electric arc method for exciting ultrasonic waves
  • Electric arc method for exciting ultrasonic waves

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Embodiment Construction

[0016] Below in conjunction with accompanying drawing, describe content of the present invention in detail:

[0017] The alternating signal used to excite the arc to generate ultrasonic waves is pressed figure 2 The method shown is coupled into the melter arc excitation signal. The alternating signal generating device used to excite the arc to generate ultrasonic waves is composed of a signal generating circuit, a power amplifier driving circuit, a high-speed high-power switch tube and a corresponding coupling device, which can generate alternating signals with a frequency ranging from several thousand cycles to one megacycle, and can The frequency and amplitude of the signal can be flexibly adjusted. Adjust the power of the alternating signal to 0W, 100W, and the frequency to 30kHz, 50kHz, and 80kHz respectively. Then, the welding is performed according to the conventional arc welding method, and the welding arc excites ultrasonic waves. The ultrasonic wave acts on the wor...

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Abstract

A method for using electric arc to excite ultrasonic wave includes such steps as electrically isolating alternating signals for guaranteeing safety of circuit, electrically isolating the are exciting signal of electrode for preventing signal interference, coupling the ultrasonic signals with arc exciting signals to obtain arc-ultrasonic exciting signals, and exciting electric arc for arc welding or smelting while modulating the electric arc by the said alternating signals in electric arc to excite ultrasonic waves, so improving the welding effect.

Description

technical field [0001] The invention relates to a method for exciting ultrasonic waves with an electric arc, which belongs to the technical field of arc welding of melting poles and non-melting poles and metal arc smelting. Background technique [0002] In the prior art, the patent application number is 96203939, and the authorized announcement number is an ultrasonic welding machine disclosed in 2258446. It includes a frame part, a pneumatic part, an ultrasonic generation part, a power supply part, and a program control part. The program control circuit includes a time Adjustable trigger control circuit, and the adjustable components are installed on the panel. The trigger control circuit can be composed of NE555 integrated circuit and peripheral capacitors, resistors, diodes, optocouplers, and thyristors. The advantage of this prior art is that welding can be carried out when the welding head does not touch the workpiece, so as to adapt to the welding of small workpieces o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/06B23K20/10
Inventor 吴敏生李路明陈以芳
Owner TSINGHUA UNIV
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