Method and device for improving quality of welding seam
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A quality and weld surface technology, applied in welding equipment, laser welding equipment, metal processing equipment, etc., can solve problems affecting the quality of strip steel products, poor weld quality, etc.
Inactive Publication Date: 2020-03-24
BEIJING SHOUGANG COLD ROLLED SHEET
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[0004] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a method and device for improving the quality of the weld, which is used to solve the problem of poor melting of the welding wire in the process of welding strip steel with a laser welding machine in the prior art. Technical problems that lead to poor quality welds, which in turn affect the quality of strip products
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Embodiment 1
[0044] This embodiment provides a method for improving the quality of welds, such as figure 1 As shown, the methods include:
[0045] S110, after welding the weld seam of the steel strip, acquiring a welding wire morphology image on the surface of the weld seam;
[0046] Due to the relative offset between the position of the welding wire and the position of the laser beam during the welding process, the welding wire will not melt and have melting defects. In order to better understand the technical solution, first introduce the structure of the welding wire feeding mechanism of the laser welding machine, such as figure 2 As shown, the welding wire feeding mechanism includes: a tensioning wheel 21, a welding wire driving unit 22, and a wire feeding guide nozzle composition 23, and the working status of each component of the welding wire feeding mechanism is a key factor to ensure the quality of welding wire melting.
[0047] After welding, when different components fail, the...
Embodiment 2
[0081] This embodiment provides a device for improving the quality of the weld, refer to Figure 5 , the device includes: an acquisition unit 51, an analysis unit 52, a search unit 53 and a sending unit 54; wherein,
[0082] During the welding process, when the position of the welding wire and the position of the laser beam are offset relative to each other, the welding wire will not melt and have melting defects. In order to better understand the technical solution, first introduce the structure of the welding wire feeding mechanism of the laser welding machine, such as figure 2 As shown, the welding wire feeding mechanism includes: a tensioning wheel 21, a welding wire driving unit 22, and a wire feeding guide nozzle composition 23, and the working status of each component of the welding wire feeding mechanism is a key factor to ensure the quality of welding wire melting.
[0083] After welding, when different components fail, the topographic images of the welding wire on ...
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Abstract
The invention provides a method and a device for improving the quality of a welding seam. The method comprises the following steps that a welding seam of strip steel is welded, and a welding wire morphology image of the surface of the welding seam is obtained; the welding wire morphology image is subjected to image analysis, and an image analysis result is obtained; a corresponding fault type is searched in a preset mapping table according to the image analysis result, and a corresponding relationship between the image analysis result and the fault type is stored in the mapping table in advance; the corresponding adjustment information is sent according to the fault type, so that a user can correspondingly adjust a wire feeding mechanism based on the adjustment information; and when the welding wire is poor, the welding wire morphology image is utilized to determine the fault type of the wire feeding mechanism and send the adjustment information corresponding to the fault type to the user, the user can adjust the wire feeding mechanism based on the adjustment information, the melting effect of the welding wire is ensured, the welding seam quality is improved, and then the quality of the strip steel product is improved.
Description
technical field [0001] The invention relates to the field of welding technology, in particular to a method and a device for improving the quality of welds. Background technique [0002] With the rapid development of the automobile industry, the cold rolling industry continues to expand. Laser welding is a key process link in the cold rolling process. Laser welding has the characteristics of fast welding speed and high welding strength. [0003] However, in the welding process, the non-melting of the welding wire has become a relatively common defect in the welding seam of the laser welding machine. In severe cases, the strength of the weld seam will be reduced, which will increase the probability of strip breakage during the production process, and at the same time cause an increase in the number of scrap products after rolling, affecting product quality. Contents of the invention [0004] Aiming at the problems existing in the prior art, the embodiment of the present in...
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