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Device and method for simulating thick plate narrow gap laser wire filler welding and real-time monitoring

A technology of laser wire filling and real-time monitoring, which is applied in the field of welding and laser processing, can solve the problem of not reflecting the "in-situ" welding situation of narrow gap laser wire filling welding, hindering the characteristics and stability of laser wire filling in narrow gaps, and affecting laser filling Wire welding parameter optimization and other issues, to achieve the effect of simple structure, low cost, and optimized welding process

Active Publication Date: 2018-06-29
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can observe the droplet transfer on the side wall of laser wire-filled welding, it is also suitable for the spectral analysis of the welding process, but this method does not consider the influence of the groove reflected laser on the droplet transfer, and cannot reflect the narrow-gap laser wire-filling Welding "in situ" welding conditions
[0008] The above deficiencies prevent people from in-depth understanding of the characteristics and stability of the narrow gap laser wire filler welding process, and also affect the optimization of laser wire filler welding parameters in engineering

Method used

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  • Device and method for simulating thick plate narrow gap laser wire filler welding and real-time monitoring
  • Device and method for simulating thick plate narrow gap laser wire filler welding and real-time monitoring
  • Device and method for simulating thick plate narrow gap laser wire filler welding and real-time monitoring

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Embodiment 1

[0052] figure 1 It shows a device for simulating thick plate narrow gap laser wire welding and real-time monitoring, including a welding simulation part, a real-time monitoring part and a data processing part 10, and its structural characteristics are:

[0053] The welding simulation part includes an assembled and clamped metal test plate 1 and a GG17 glass test plate 2; a laser beam 3 for laser wire filler welding; a narrow gap air supply pipe 4 for transporting welding shielding gas; 5 special wire feed gun 6 and welding wire 5 for narrow gap; the metal test plate 1 and the GG17 glass test plate 2 are in contact with a narrow gap groove that simulates the actual welding joint; figure 2 It is the front view of the welding simulation part in this example, image 3 It is the right side view of the welding simulation part of the present invention.

[0054] The real-time monitoring section includes a high-speed camera 8 arranged on one side of the GG17 glass test plate 2 facin...

Embodiment 2

[0060] A device for simulating narrow-gap laser wire welding of thick plates and real-time monitoring, including a welding simulation part, a real-time monitoring part and a data processing part 10, and its structural features are:

[0061] The welding simulation part includes an assembled and clamped metal test plate 1 and a GG17 glass test plate 2; a laser beam 3 for laser wire filler welding; a narrow gap air supply pipe 4 for transporting welding shielding gas; 5 special wire feed gun 6 and welding wire 5 for narrow gap; the metal test plate 1 and the GG17 glass test plate 2 are in contact with a narrow gap groove that simulates the actual welding joint;

[0062] The real-time monitoring section includes a high-speed camera 8 arranged on one side of the GG17 glass test plate 2 facing the welding area, an optical fiber probe 7 and a laser auxiliary light source 9, and the optical fiber probe 7 is connected to a spectrometer 11;

[0063] Both the output ends of the spectrome...

Embodiment 3

[0068] A method for simulating thick plate narrow gap laser wire-filling welding and real-time monitoring, the steps are as follows:

[0069] S1. Prepare welding simulation parts, including metal test plate 1 and GG17 glass test plate 2, and set up narrow gap grooves simulating actual welding joints on metal test plate 1 and GG17 glass test plate 2, and then metal test plate 1 and GG17 glass test plate 2. GG17 glass test plate 2 is assembled and clamped;

[0070]S2, arrange the optical fiber probe 7, the high-speed camera 8 and the laser auxiliary light source 9 of the spectrometer 11 on one side of the GG17 glass test plate 2, and make the optical fiber probe 7, the high-speed camera 8, and the laser auxiliary light source 9 aim at the welding area at the same time; the spectrometer 11 and the output end of the high-speed camera 8 are all connected with the input port of the data processing unit 10;

[0071] S3. Arrange a narrow-gap special wire feed gun 6 for transporting w...

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Abstract

The invention relates to a device and method for simulating narrow-gap wire filling laser welding of a thick plate and monitoring in real time. The device and method can simulate a narrow-gap wire filling laser welding process. Before welding, a test is performed and the welding process is monitored in real time to understand the characteristics and stability of the welding process and optimize the welding process. Moreover, the device is simple in structure, the method is convenient to operate, and the device and method are suitable for being massively applied to laboratories and engineering practice. The device comprises a welding simulating part, a real-time monitoring part and a data processing part. The welding simulating part comprises a metal test plate and a GG17 glass test plate which are assembled and clamped, a laser beam for wire filling laser welding, a narrow-gap blowing pipe, a special wire feeding gun for the narrow-gap and a welding stick; a narrow-gap groove is formed in the contact part of the two test plates; the real-time monitoring part comprises a high-speed camera which is arranged on one side of the GG17 glass test plate and is aligned to the welding region, an optical fiber probe and a laser auxiliary light source; the optical fiber probe is connected to a spectrograph; the spectrograph is connected to the output end of the high-speed camera and the input port of the data processing part.

Description

technical field [0001] The invention relates to a device and method for simulating thick plate narrow-gap laser wire-filling welding and real-time monitoring, and belongs to the technical field of laser processing and welding. Background technique [0002] Laser self-fluxing welding technology is an advanced high-energy beam welding method, which has outstanding advantages such as small welding heat input, fast welding speed, and small weld deformation. It has been widely used in aerospace, energy, rail transit and other manufacturing industries. However, for some special equipment, such as the large thick plate structure of the giant vacuum chamber of the International Thermonuclear Experimental Reactor Project ITER (stainless steel with a plate thickness of 60mm), the military phased array radar substrate (aluminum alloy with a thickness greater than 70mm), etc., conventional Laser self-fusion welding is difficult to complete related welding work. The reason is that the m...

Claims

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Application Information

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IPC IPC(8): B23K26/21B23K26/70
CPCB23K26/21B23K26/702
Inventor 杨晓益陈辉朱宗涛雷正赵旭
Owner SOUTHWEST JIAOTONG UNIV