Narrow-gap laser circular oscillation motion filler wire welding method for aluminum alloy thick-wall component
A technology of oscillating motion and welding method, used in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of unfused and welding porosity, and achieve reduced weld porosity, enhanced stability, and joint quality stability. high effect
Inactive Publication Date: 2020-08-18
HARBIN WELDING INST LTD
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[0005] The purpose of the present invention is to avoid the technical problems of lack of fusion and welding porosity that easily occur during narrow gap welding of aluminum alloy thick-walled components, and to provide a narrow gap laser circular oscillating motion filler wire welding of aluminum alloy thick-walled components method
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[0024] Specific embodiment one (refer to the attached figure 1 And figure 2 ): A narrow gap laser circular oscillation motion filler wire welding method for aluminum alloy thick-walled components of this embodiment. During welding, the emitting end of the laser beam 3 acts on the end of the area to be welded around the laser beam 3 for circular oscillation motion , The laser beam 3 enters the narrow gap groove 1 with a circular oscillating motion track and acts on the area to be welded 7 to form a welding pool. Filling the welding wire 6 into the molten pool by feeding the wire before, in the laser heating and molten pool heat radiation Melt under common action, and realize the connection of aluminum alloy thick-walled member 4 by single-pass multi-layer filling method;
[0025] The specific welding parameters are as follows:
[0026] The aluminum alloy thick-walled member 4 is 5A06 rust-proof aluminum alloy with a thickness of 130mm;
[0027] The width of the lower end of the narr...
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Abstract
The invention discloses a narrow-gap laser circular oscillation motion filler wire welding method for an aluminum alloy thick-wall component. The invention belongs to the technical field of laser material processing. The invention aims to solve the technical problems of incomplete fusion and welding air holes which are extremely easy to occur during narrow gap welding of the aluminum alloy thick-wall component. According to the welding method, during welding, the emitting end of a laser beam acts on one end of a to-be-welded area around the laser beam to perform a circular oscillation motion,so that the laser beam enters a narrow-gap groove in a circular oscillation motion track to act on the to-be-welded area to form a welding pool, and filler wires enter the welding pool in a front wirefeeding mode, the filler wires are molten under the combined action of laser heating and molten pool thermal radiation, and the connection of the aluminum alloy thick-wall component is realized by adopting a single-channel multilayer filling mode. The method is large in laser beam heat source action area and controllable in mode, can generate a controllable stirring effect on the liquid molten pool, and has the advantages that the aluminum alloy side wall and interlayer melting is more sufficient, the welding process is more stable, the welding porosity is lower, and the joint stability is higher.
Description
Technical field [0001] The invention belongs to the technical field of laser material processing, and in particular relates to a narrow gap laser circular oscillation motion filler wire welding method of aluminum alloy thick-walled components. Background technique [0002] Due to its good corrosion resistance, higher specific strength and better processing performance, aluminum alloy thick-walled structural parts have been widely used in aerospace, marine ships, armored shells and other fields, and they are increasingly showing The trend to replace conventional steel materials. The application of friction stir welding technology to thick aluminum alloy welding has been very mature, but friction stir welding tooling requires high precision, and it is difficult to achieve three-dimensional flexible processing of complex structural parts, and the application field has received great restrictions. The laser-arc hybrid welding technology can ensure high welding quality while simultan...
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IPC IPC(8): B23K26/211B23K26/24B23K26/12B23K26/70
CPCB23K26/123B23K26/24B23K26/211B23K26/702
Inventor 邹吉鹏黄瑞生孙谦李小宇杨义成梁晓梅方迪生刘孔丰聂鑫蒋宝曹浩武鹏博宋建廷徐楷昕
Owner HARBIN WELDING INST LTD
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