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An Adaptive Detection and Control Method of Welding Width in Narrow Gap Welding

An adaptive detection and control method technology, applied in welding equipment, manufacturing tools, arc welding equipment, etc., can solve problems such as welding defects, uneven melting width in narrow gaps, etc., achieve strong applicability, eliminate the impact of detection accuracy, The effect of high detection accuracy

Active Publication Date: 2018-10-23
XIANGTAN UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of welding defects caused by the uneven welding width of the existing narrow gap, and the problem of arc welding centering

Method used

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  • An Adaptive Detection and Control Method of Welding Width in Narrow Gap Welding
  • An Adaptive Detection and Control Method of Welding Width in Narrow Gap Welding
  • An Adaptive Detection and Control Method of Welding Width in Narrow Gap Welding

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with accompanying drawings and embodiments, but the present invention is not limited.

[0021] 1. If figure 2 As shown, the welding wire is sent out from the center hole of the conductive tip 4 after passing through the conductive rod, and the pulse welding power supply 16 supplies power to the welding arc 2 through the feeding and rotating device 10; during the welding process, the feeding and rotating device 10 drives the bending conductive rod 5 With the contact tip 4 and the welding width oscillator 15, the arc 2 is driven to vibrate in a circular arc shape with a certain radius in the narrow gap welding groove to form a welding pool 1 to realize narrow gap pulse welding of the oscillating arc. At the same time, it is detected by the Hall current sensor 17 Pulse arc current I.

[0022] In the above swing arc welding process, when on the left side wall, a large current signal is detected...

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Abstract

The invention discloses a self-adaptive detection control system and method for the narrow gap weaving arc welding width. By the adoption of the self-adaptive detection control system and method, the defects that when the existing narrow gap welding width is nonuniform, undercut, slag inclusion, nonuniform weld joints and the like are caused are overcome. According to the main points of the technical scheme, in the welding process, a weaving arc sensor controls an electric arc to swing so as to conduct scanning in the position of a slope, signals are collected by the sensor, the centering position deviation is determined by comprising the pulse number on the left side with the pulse number on the right side, the welding width change is judged by comparing the pulse sum, the swing amplitude of a welding torch is adjusted, and accordingly self-adaptive control and automatic centering of a welding gun are achieved. A detection algorithm is simple, the responds speed is high, the detection accuracy is high, the welding stability of the narrow gap weaving arc welding is improved, and welding defects are avoided.

Description

technical field [0001] The invention belongs to the field of welding technology, in particular to an adaptive detection and control method for swing arc welding with narrow gap welding seam melting width. Background technique [0002] With the large-scale and high-parameterization of modern industry, the application of thick plate and ultra-thick plate welded metal structures is becoming more and more extensive, and the welding of longitudinal seams and circumferential seams in the field of thick plates is also increasing. The unevenness of the melt width of the narrow gap is caused by the deformation of the narrow gap during processing and assembly. When the melting width is uneven, it will cause defects such as undercut and uneven slag weld. Since the repair of narrow gap welding is difficult, the detection of fusion width is very important. [0003] In order to ensure uniform penetration on both sides of the welding groove in the narrow gap arc welding method, it is nec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/073B23K9/095B23K9/127
CPCB23K9/0026B23K9/0737B23K9/0953B23K9/127
Inventor 洪波杨鹏昊庞争林李文强
Owner XIANGTAN UNIV
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