Self-adaptive detection control system and method for narrow gap welding width

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

Active Publication Date: 2016-08-10
XIANGTAN UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of welding defects caused b

Method used

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  • Self-adaptive detection control system and method for narrow gap welding width
  • Self-adaptive detection control system and method for narrow gap welding width
  • Self-adaptive detection control system and method for narrow gap welding width

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

[0021] 1. Such as figure 2 As shown, the welding wire passes through the conductive rod and is sent out from the center hole of the contact tip 4. The pulse welding power source 16 supplies power to the welding arc 2 through the power feeding and rotating device 10; during the welding process, the power feeding and rotating device 10 drives the bending conductive rod 5 With the contact tip 4, the weld width oscillator 15 drives the arc 2 to make a certain radius of arc shaking in the narrow gap welding groove to form a welding pool 1, which realizes the swing arc narrow gap pulse welding, and is detected by the Hall current sensor 17. Pulse arc current I.

[0022] In the above-mentioned swing arc welding process, when a large current signal is detected on the left wall, the signal controls the pulse generator to send a d...

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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, and in particular relates to an adaptive detection and control system and 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 we...

Claims

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Application Information

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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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