Method of double filum narrow interstice alternating-direct current pulse matching electric arc welding

A DC pulse, narrow-gap technology, used in arc welding equipment, welding equipment, manufacturing tools, etc., can solve the problem of not seeing the arc effect, and achieve the effect of solving the problem of side wall fusion, easy maintenance, and wide applicability

Inactive Publication Date: 2008-04-16
TIANJIN UNIV
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Problems solved by technology

These two technologies only improve the contact between the welding torch arc and the side wall through mechanical methods, and do not see the role of the arc's own force in solving the problem of side wall fusion

Method used

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  • Method of double filum narrow interstice alternating-direct current pulse matching electric arc welding
  • Method of double filum narrow interstice alternating-direct current pulse matching electric arc welding
  • Method of double filum narrow interstice alternating-direct current pulse matching electric arc welding

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Embodiment Construction

[0041] In the test of the present invention, the main equipment adopted is: one DC electric welding machine, one AC electric welding machine, two wire feeders, one double wire AC and DC welding controller, and several welding wires.

[0042] The controller adopts a modular design and is divided into two modules, namely the AC detection module, hereinafter referred to as the detection module, and the DC welding machine pulse control module, hereinafter referred to as the control module. The detection module adopts an analog circuit-based design method. The module adopts the digital structure with MCU single-chip microcomputer as the core, and has 3 working modes in total, which can respectively make the welding power supply operate in constant peak voltage mode (mode1), constant base voltage mode (mode2), peak-base value pulse voltage mode (mode3) ) output, which can be flexibly selected in actual operation. The entire controller adopts the "black box" mode, the interface is si...

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Abstract

The present invention relates to a narrow gap welding method which belongs to the technique field of the welding technology. A double-thread narrow gap alternating-direct current pulse matching electric arc welding method comprises the following procedures: connecting equipment and regulating the parameter of the alternating current welding machine; connecting the control end of the double-thread alternating-current/direct current welding controller with the scheduled end of the potentiometer of the direct-current welding machine; setting the base electric voltage of the direct current impulse and setting the spike voltage of the direct current impulse; setting the wire feeding rate of the two welding sticks and the range is between 1 and 15m/min; connecting the detecting end of the controller with the alternating current welding machine and the voltage signal is obtained; treating the voltage signal with the detecting module to detecting signal and inputting the control module; generating the direct current impulse controlling signal and outputting to the control end by the calculating of the control module; regulating the controller mode to cause that the controller runs at the impulse outputting mode and outputting the impulse signal required by the designing; and doing welding. The invention guarantees the lateral wall fusing and increases the reliability of the welding equipment and facilitates the maintenance by the acting force between the two electrical arcs.

Description

technical field [0001] The invention relates to a narrow gap welding method, which belongs to the technical field of welding technology. Background technique [0002] Narrow gap welding technology is a special industrial technology with high quality, high productivity and low production cost. From a technical point of view, its many technical advantages determine that this technology is extremely useful in all thick plates except thin plates. Big temptation, from an economic point of view, narrow gap welding technology does have a problem of economic plate thickness. Generally speaking, the greater the plate thickness, the greater the economic benefits. [0003] Narrow gap welding mainly includes two types. One is gas metal shielded welding (GMAW). This method is widely used in industrialized countries (the proportion of technical literature is as high as about 70%). This method is easy to use low and medium line energy (20KJ / cm), a smaller root gap can be used, and it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/10B23K9/09
Inventor 李桓高莹杨立军曲丹陆权森刘鹏杨战胜孙勃
Owner TIANJIN UNIV
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