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Double-wire arc welding power system based on sinusoidal wave modulating pulses

A technology of sine wave modulation and power supply system, which is applied to arc welding equipment, manufacturing tools, welding equipment, etc., and can solve problems such as lack of system theory regularity

Inactive Publication Date: 2014-07-09
SOUTH CHINA UNIV OF TECH
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  • Description
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Problems solved by technology

So far, double pulse MIG welding is one of the best solutions for welding aluminum alloys, but it does not have a general systematic theoretical regularity

Method used

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  • Double-wire arc welding power system based on sinusoidal wave modulating pulses
  • Double-wire arc welding power system based on sinusoidal wave modulating pulses
  • Double-wire arc welding power system based on sinusoidal wave modulating pulses

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Embodiment Construction

[0075] The present invention will be further described below in conjunction with specific examples.

[0076] The twin-wire arc welding power supply system based on sine wave modulation pulse described in this embodiment includes:

[0077] Mathematical model for sine wave modulation pulse, used to convert the welding pulse current I i The peak value and base value of the value change according to the law of sine waves, forming the peak value and base value current sequence value;

[0078] The control detection circuit with DSP as the control core is used to realize the closed-loop control of the twin-wire arc welding power supply system to ensure that the output current and voltage of the system have a stable closed-loop controllability. The DSP is used for flexible programming to realize the digitalization of the control process of the system. At the same time, on the basis of the above mathematical model, the sine wave modulation pulse technology is realized, so that the wel...

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Abstract

The invention discloses a double-wire arc welding power system based on sinusoidal wave modulating pulses. The system comprises a mathematical model, a control detection circuit, and an intelligent expert welding panel; the mathematical model is designed for sinusoidal wave modulating pulses and used for changing peak values and basic values of welding pulse current according to the sinusoidal law to generate a peak value and basic value current sequence; the control detection circuit is used for closed-loop control of the system, a DSP is used for flexible encoding, a sinusoidal wave modulation pulse technique is achieved on the basis of the mathematical model, changes in the peak values and basic values of the welding pulse current can be controlled through sinusoidal wave; the intelligent expert welding panel is used for allowing a man-machine interaction function, regulating parameters of sinusoidal wave modulating pulse current welding in the mathematical model, selecting and unifying the welding parameters and optimally building a sinusoidal wave controlled pulse current welding expert database. The double-wire arc welding power system based on sinusoidal wave modulating pulses has the advantages that gradient energy welding easy to operate is achieved, inputting of welding energy can be controlled precisely, and pulse changes are stable.

Description

technical field [0001] The invention relates to the technical field of high-speed twin-wire arc welding, in particular to a twin-wire arc welding power supply system based on sine wave modulation pulses. Background technique [0002] With the development of science and technology, industrial production has begun to strengthen the awareness of energy conservation and improve resource utilization. At the same time, products are required to be as lightweight as possible. Aluminum alloys have the advantages of light weight, corrosion resistance, high strength, and moderate prices. Aluminum alloys and other lightweight materials The application is more and more extensive, which puts forward new requirements for welding process, quality and efficiency, and the requirements for welding are getting higher and higher, especially when welding thin aluminum alloys with a thickness of <1.5mm, it is easy to weld through and other problems. . The emergence of pulsed MIG welding has so...

Claims

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Application Information

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IPC IPC(8): B23K9/09B23K9/10
CPCB23K9/092B23K9/1043B23K9/173
Inventor 薛家祥陈振升王磊磊沈栋恒功淳李志宽肖健
Owner SOUTH CHINA UNIV OF TECH
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