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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

Active Publication Date: 2016-08-24
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a super-audio composite pulse GMAW welding power supply device, which is used to solve the technical problems in the prior art that the pulse current amplitude is low and the effect is weak due to the way of coupling super-audio pulses with an external excitation source.

Method used

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  • Ultrasonic-frequency composite pulse GMAW welding power source device
  • Ultrasonic-frequency composite pulse GMAW welding power source device
  • Ultrasonic-frequency composite pulse GMAW welding power source device

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Embodiment 1

[0028] figure 1 The schematic circuit diagram of the super-audio composite pulse GMAW welding power supply device provided by the present invention; as figure 1 As shown, the present embodiment provides a super-audio composite pulse GMAW welding power supply device, including a constant voltage source 1 for providing a constant voltage for the BUCK-type main circuit 2, a BUCK-type main circuit 2, and a switch for super-audio frequency pulse current Circuit 4 provides a constant current source 3 of constant current and a super-audio frequency pulse current switching circuit 4, wherein the constant voltage source 1 is connected to the BUCK type main circuit 2; the constant current source 3 is connected to the super audio frequency pulse current switching circuit 4; the BUCK type main circuit The circuit 2 is connected in parallel with the ultra-audio pulse current switching circuit 4; the BUCK type main circuit 2 is used to provide the first output current for welding, and the f...

Embodiment 2

[0034] This embodiment is a supplementary description based on the above embodiments.

[0035] Such as figure 1As shown, this embodiment provides a super-audio composite pulse GMAW welding power supply device, wherein the BUCK type main circuit 2 includes a first power switch tube VT 1 , inductor L and first diode D 1 , the first power switch VT 1 The drain is connected to the positive pole of the constant voltage source 1, and the first power switch tube VT 1 The source is connected to the inductor L, the first diode D 1 The positive pole of the constant voltage source 1 is connected to the negative pole of the constant voltage source 1, and the first diode D 1 The negative pole of the first power switch tube VT 1 The source is connected to the inductor L.

[0036] Specifically, the first output current I provided by the BUCK main circuit 2 A In DC or pulse form, the maximum output current can reach 500A. The first power switch tube VT 1 is an insulated gate bipolar ...

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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.

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

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Application Information

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IPC IPC(8): B23K9/10
CPCB23K9/1043B23K9/092B23K9/1062H02M1/34H02M3/142
Inventor 齐铂金王强
Owner BEIHANG UNIV
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