Magnetic control stirring composite laser welding device and method
A technology of laser welding and welding, which is applied in laser welding equipment, welding equipment, welding/welding/cutting items, etc., can solve the problems of coarse tissue, reduced mechanical properties and corrosion resistance of laser welds, and achieve improved strength, Elimination of porosity defects and improvement of joint performance
Active Publication Date: 2022-07-22
SUN YAT SEN UNIV
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Problems solved by technology
However, problems such as porosity defects and coarse structures generated during the welding process lead to a sharp decrease in the mechanical properties and corrosion resistance of laser welds.
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[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0025] like figure 1 The shown magnetron stirring hybrid laser welding device includes a laser head and a magnetron mechanism, the laser head and the magnetron mechanism are distributed along the welding direction, and the laser head is located in front of the magnetron mechanism; the magnetron mechanism includes A stirring core, an upper driving unit and a lower driving unit, the stirring core includes a rotating core, an upper stationary magnetic pole and a lower stationary magnetic pole, and the upper stationary magnetic pole and the lower stationary magnetic pole are respectively fixed on the upper and lower ends of the rotating core; the upper driving The unit includes an upper electromagnetic driver stator, an upper centering magnetic pole and an upper suspension magnetic pole, the lower driving unit includes a lower electromagnetic driver stator, a...
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The invention discloses a magnetic control stirring composite laser welding device and method.The magnetic control stirring composite laser welding device is mainly composed of a laser head and a magnetic control mechanism, the laser head and the magnetic control mechanism are distributed in the welding direction, and the laser head is located in front of the magnetic control mechanism; the magnetic control mechanism comprises a stirring core, an upper driving unit and a lower driving unit, and the upper driving unit and the lower driving unit form an electromagnetic field to drive the stirring core to rotate at a high speed under the condition of ensuring stable suspension of the stirring core. And afterheat after laser welding is matched with friction heat generation of the stirring core to excite recrystallization of a welding seam structure, so that the purposes of eliminating air holes in the welding seam, refining the structure and improving the performance of a joint are achieved, and the advantages of energy conservation, high efficiency, cost reduction and the like are achieved.
Description
technical field [0001] The invention relates to welding technology, in particular to a magnetically controlled stirring compound laser welding device and method. Background technique [0002] Molybdenum alloy has the characteristics of high melting point, high temperature strength, good wear resistance, good thermal conductivity, small coefficient of linear expansion, high elastic modulus, and good corrosion resistance. Alternative application requirements. Affected by the high thermal conductivity, significant grain coarsening and embrittlement tendency of molybdenum alloy itself, it is usually welded with a high power density heat source, such as laser welding. However, problems such as porosity defects and coarse structure generated during the welding process lead to a sharp decrease in the mechanical properties and corrosion resistance of laser welded seams. To this end, it is necessary to explore new welding methods to achieve the purpose of eliminating porosity defec...
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Patent Timeline
Login to View More IPC IPC(8): B23K26/346B23K26/70B23K26/323B23K103/08
CPCB23K26/346B23K26/323B23K26/702B23K2103/08
Inventor 胡琰莹马显锋牛屹天杨卫岐
Owner SUN YAT SEN UNIV