Laser welding with filler wire method of aluminum alloy T-type shapes for boat

A technology of laser wire filling and welding method, which is applied in the direction of laser welding equipment, welding equipment, welding/welding/cutting items, etc., can solve the problems of large deformation of T-shaped profiles, poor joint performance, poor applicability, etc., to avoid stability Reduction of properties, improvement of stability, and dimensional stability

Inactive Publication Date: 2007-08-01
BEIJING UNIV OF TECH
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Problems solved by technology

In this case, the welding process mainly uses filler metal to increase the height of the fillet weld leg to improve the connection strength of the weld. Due to the insufficient penetration of the weld, the single-pass weld cannot completely fill all the gaps between the joint

Method used

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  • Laser welding with filler wire method of aluminum alloy T-type shapes for boat
  • Laser welding with filler wire method of aluminum alloy T-type shapes for boat
  • Laser welding with filler wire method of aluminum alloy T-type shapes for boat

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Experimental program
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Embodiment Construction

[0020] The following are embodiments and effects of the present invention.

[0021] Experiment using CO 2 The laser parameters are: wavelength 10.6 μm, power 3500W.

[0022] The aluminum alloy material used in the experiment is: 5083 aluminum alloy with a thickness of 6mm.

[0023] As shown in Figure 2 and Figure 3, before welding, the vertical plate 4 and the horizontal plate 5 are rigidly fixed and 90° to each other using a general fixture, the laser beam 2 is incident on the surface of the horizontal plate 5 at an angle of 30°, the welding wire 1, the nozzle 3 and laser beam 2 are in the same plane, welding wire 1 and nozzle 3 are arranged on both sides of laser beam 2, welding wire 1 and laser beam 2 form an angle of 45°, nozzle 3 and laser beam 2 form a mutual 45°, laser beam 2 acting on the vertical plate 4, the laser beam 2 and the vertical plate 4 have an offset 10 of 0.5mm relative to the upper surface of the horizontal plate 5, and the offset 10 is along the normal...

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Abstract

The invention is a laser filler wire welding method of marine aluminum alloy T-shaped section bar which belongs to laser materials processing technology field. Fix the vertical plate (5) and horizontal plate (4) rigidly in 90degreebefore welding, the laser beam (2) incidents obliquely in the angle of 30degree-45degreewith horizontal plate (4), welding wire (1), laser beam (2) and nozzle (3) are in same surface and in 30 degree to 60 degreeeach other, the incident laser beam and the working point of workpiece are on vertical board and have a slippage of 0.3 to 0.8mm on the horizontal plate surface, the laser beam and the photoproduced plasma body melts welding wire and generates deep weld penetration between vertical plate (5) and horizontal plate (4), it realizes the welding and shaping of marine aluminum alloy T-shaped section bar through twice welding. The method improves the stability of welding process, process is simple, can create a variety of marine aluminum T-shaped section bar, the prepared aluminum alloy T-shaped section bar has small deformation, stable dimension and excellent overall performance.

Description

technical field [0001] The invention relates to a laser wire-filling welding method for marine aluminum alloy T-shaped profiles, and belongs to the technical field of laser material processing. Background technique [0002] Aluminum alloy has the characteristics of small specific gravity and elastic modulus, corrosion resistance, weldability, easy processing, non-magnetism and good low temperature performance. It is used in the shipbuilding industry and has the following advantages. (a) Due to the reduced weight of the ship, the capacity of the single engine can be reduced, and the speed can be increased; fuel consumption can be reduced and energy saved; the aspect ratio of the ship can be improved, the stability can be increased, and the ship is easy to maneuver; the load capacity can also be increased, Get extra profit. (b) It has good corrosion resistance, can reduce maintenance costs such as oiling, and has a long service life (generally more than 20 years). (c) Good p...

Claims

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Application Information

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IPC IPC(8): B23K26/26B23K26/02B23K26/14B23K103/10B23K26/242
Inventor 左铁钏祁俊峰牛振张冬云肖荣诗
Owner BEIJING UNIV OF TECH
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