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Adaptive welding method for laser filler wire welding of high-strength steel sheet

A laser wire filling and welding method technology, which is applied in laser welding equipment, welding equipment, metal processing, etc., can solve the problems of laser wire filling welding without high-strength steel sheets, etc., to reduce welding defects, improve welding efficiency, and ensure stability Effects of Sex and Consistency

Active Publication Date: 2014-09-24
SHANGHAI JIAO TONG UNIV +1
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Problems solved by technology

[0007] After searching and analyzing the existing technical literature, it is found that there is no application of adaptive welding method for laser filler wire welding of high-strength steel sheet

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  • Adaptive welding method for laser filler wire welding of high-strength steel sheet
  • Adaptive welding method for laser filler wire welding of high-strength steel sheet

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Embodiment 1

[0029] This embodiment relates to an adaptive welding method for laser wire-filled welding of high-strength steel sheets, and the method includes the following steps:

[0030] This embodiment is used in the laser wire-fill welding of 3mm marine high-strength steel sheet, and the schematic diagram of the adaptive control of wire-fill welding is as follows figure 1 shown. Among them, 1 is the high-strength steel sheet workpiece to be welded, 2 is the laser vision sensor based on the principle of triangulation, 3 is the processor (image processing and feature extraction device of the vision sensor), 4 is the main controller (adaptive welding Main controller), 5 is the wire feeding controller (wire feeding controller to control the wire feeding speed), 7 is the laser irradiated on the workpiece during the welding process, and 8 is the welding wire for laser wire filling welding.

[0031] The first step is to conduct a laser wire-filled welding process experiment on high-strength ...

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Abstract

The invention provides an adaptive welding method for laser filler wire welding of a high-strength steel sheet. The method comprises: step 1, performing process experiment on the high-strength steel sheet, and building a process parameter model of welding wire filling area and upper-groove width; step 2, during welding, acquiring the welding wire filling area and the groove width of a current groove in real time based on a laser vision sensor; step 3, according to the filling area and the groove width of the current groove and the process parameter model, adjusting process parameters in real time, so as to realize adaptive control during welding. Through an expert database or a process mathematical model built in specific materials and groove forms, and the groove filling area acquired in real time based on the laser vision sensor, adaptive adjustment on the process parameters during welding is realized, the stability and uniformity of the welding quality are ensured, the welding efficiency is improved, welding defects are reduced, and the method has very high practical values during welding large sheet elements in the fields such as aviation, spaceflight and nuclear power.

Description

technical field [0001] The invention relates to a high-precision automatic welding technology, in particular to an adaptive welding method for laser wire-filled welding of high-strength steel sheets. Background technique [0002] With the development of welding technology and the pursuit of high-quality welding products, improving efficiency and reducing labor intensity in various industries such as aviation, aerospace, shipbuilding, and electrical power stations, it is an inevitable trend to adopt automated welding technology. [0003] For large-scale components, 1) due to the large size of the workpiece, it is difficult to install and locate, which inevitably causes a certain position deviation during assembly, resulting in misalignment, uneven groove clearance, etc.; 2) the affected parts The processing accuracy is limited, and it is difficult to ensure the consistency and repeatability of the entire weld bevel size; 3) During the welding process, the workpiece is deforme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/26
CPCB23K26/26B23K2101/18
Inventor 张轲施可扬唐新华王欢黄坚陈永亮
Owner SHANGHAI JIAO TONG UNIV
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