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Welding seam tracking sensor capable of controlling electric arcs through electric and magnetic fields

A sensor and arc technology, applied in arc welding equipment, welding equipment, welding accessories, etc., can solve problems such as impact, achieve the effects of avoiding collisions, reducing residual stress, and improving welding quality

Active Publication Date: 2017-08-04
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the magnetron arc is easily disturbed by the external magnetic field, and at the same time affected by the temperature of the Curie point, a cooling device is required to cool the magnetic induction coil
[0005] To sum up, the current application of magnetron arc sensors in seam tracking has many forms, but there are still some defects. How to make the magnetic induction coil work stably for a long time is an urgent problem to be solved, and there is no external electric field at present. Arc sensor for seam tracking

Method used

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  • Welding seam tracking sensor capable of controlling electric arcs through electric and magnetic fields
  • Welding seam tracking sensor capable of controlling electric arcs through electric and magnetic fields
  • Welding seam tracking sensor capable of controlling electric arcs through electric and magnetic fields

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Example 1, see figure 1 and figure 2 , the sensor is mainly composed of an electric field excitation power supply, a magnetic field excitation power supply, three pairs of pole plates that generate an electric field, and a magnetic induction coil that generates a magnetic field. The sensor is fixed on the welding torch by the threaded hole of the welding torch gas cover. The outer wall of the welding torch gas cover is wrapped with a layer of heat-resistant insulation layer. The magnetic induction coil is tightly wound on the insulation of the welding torch gas cover from bottom to top. On the heat insulation layer, after winding, a layer of insulating layer is wrapped on the outer wall of the magnetic induction coil. A water storage tank is formed between the insulating layer and the outer wall of the welding torch gas cover to cool the magnetic induction coil. There is a cover plate on the upper end of the water storage tank. There are two symmetrical water inlets a...

Embodiment 2

[0032] Example 2, see image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , is a schematic diagram of the relationship between the seam tracking sensor and the welding workpiece position of the electric and magnetic field dual-controlled arc and the corresponding Hall current waveform. The position and shape of the arc when the arc is rotated to the right, and the arc on the right is the position and shape of the arc when the arc rotates and swings to the far right. image 3 is a schematic diagram of the alignment of the sensor and the weld, Figure 4 is corresponding image 3 Hall current signal waveform diagram; Figure 5 is a schematic diagram of the position of the sensor when it is deflected to the left relative to the weld, Figure 6 is corresponding Figure 5 Hall current waveform diagram; Figure 7 is a schematic diagram of the position of the sensor when it is offset to the right of the weld seam, Figure 8 is corresponding Figure 7 Hall ...

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Abstract

The invention discloses a welding seam tracking sensor capable of controlling electric arcs through an electric field and a magnetic field. The sensor belongs to a welding seam tracking system composed of a welding power source, a welding seam tracking real-time adjusting mechanism, a wire feeder, a Hall sensor, and the like. The sensor mainly comprises an electric field excitation power source, a magnetic field excitation power source, three pairs of polar plates used for generating the electric field, a magnetic induction coil used for generating the magnetic field, and the like. According to the welding seam tracking sensor, after a welding gun achieves arc striking, the electric field excitation power source transmits voltage of certain alternate frequency and phase difference to the three pairs of polar plates, polarity of the three pairs of polar plates is alternately changed, and the magnetic field excitation power source enables the magnetic induction coil to generate the constant longitudinal magnetic field; the electric field conveniently controls the electric arcs to rotate and swing under the situation that the magnetic field focuses on electric arc shape, so that welding seams are scanned; electric arc information is extracted through the Hall sensor, welding seam tracking deviation is processed and judged through the welding seam tracking real-time adjusting mechanism, and welding routes and welding parameters are adjusted, so that the welding seams are automatically tracked; and the magnetic field can stir a molten pool, residual stress of the welding seams is reduced, and welding quality of the welding seams is improved.

Description

technical field [0001] The invention relates to a welding seam tracking sensor which utilizes external electricity and a magnetic field to simultaneously act on the welding arc to realize automatic tracking of the weld seam and improve the welding quality of the weld seam. [0002] technical background [0003] Arc welding is the most widely used welding method in industrial production. In view of the continuous improvement of welding automation in recent years, in the field of welding automatic control, it is mainly to control the arc of arc welding to realize automatic tracking of weld seams. The so-called weld seam tracking is to extract the information of the welding arc in real time during welding, so as to judge the relative position of the welding torch and the weld seam, and then adjust the welding path and welding parameters, so as to ensure the reliability of welding quality and realize weld seam tracking. [0004] Arc is a continuous gas discharge phenomenon, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/127B23K9/08B23K9/32
CPCB23K9/08B23K9/1276B23K9/32
Inventor 李湘文袁孙辉洪波张贤锌
Owner XIANGTAN UNIV
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