Ultrasonic-frequency composite pulse GMAW welding power source device

A technology of welding power supply and composite pulse, which is applied in welding equipment, output power conversion devices, electrical components, etc., can solve the problems of low pulse current amplitude and weak effect, achieve increased stiffness and improve droplet transfer Behavioral, stability-enhancing effects
CN105880802AActive Publication Date: 2016-08-24BEIHANG UNIV
5 Cites 20 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2016-08-24

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides an ultrasonic-frequency composite pulse GMAW welding power source device which comprises a constant-voltage source used for providing constant voltage for a BUCK type main circuit, the BUCK type main circuit, a constant-current source used for providing constant current for an ultrasonic-frequency pulse current switching circuit, and an ultrasonic-frequency pulse current switching circuit. The constant-voltage source is connected with the BUCK type main circuit. The constant-current source is connected with the ultrasonic-frequency pulse current switching circuit. The BUCK type main circuit is connected with the ultrasonic-frequency pulse current switching circuit in parallel. The BUCK type main circuit is used for providing first output current for welding, wherein the first output current is in a direct current form or a pulse form. The ultrasonic-frequency pulse current switching circuit is used for providing second output current for welding, wherein the second output current is ultrasonic-frequency pulse current. By means of the above ultrasonic-frequency composite pulse GMAW welding power source device, the ultrasonic-frequency pulse current and the current in the direct current form or the pulse form are superimposed, the behavior of metal transfer of traditional direct current or pulse GMAW is improved, electric arc energy is concentrated, the electric arc stability is greatly improved, and the influences of electric arc magnetic flow are reduced.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of welding, in particular to a super-audio composite pulse GMAW welding power supply device. Background technique

[0002] Pulsed Gas Metal Arc Welding (P-GMAW) can achieve spray transfer under the condition that the average welding current is less than the critical current, and has a wide current adjustment range. High efficiency, good penetration, small welding heat input, suitable for all-position welding and other advantages, widely used in industrial production. However, similar to other arc welding, P-GMAW also has problems such as prone to porosity defects, thick weld structure, and serious attenuation of joint mechanical properties compared with the base metal, especially during pulse welding. The current is small and the arc is easily disturbed. , poor stability, there are certain limitations in practical applications.

[0003] With the development of ultrasonic technology and equipment, power ultrasonic is...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More