High-power laser arc hybrid welding butt joint
A laser arc and butt joint technology, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of unstable welding seam quality, narrow process window, insufficient process stability, etc., and improve keyhole stability. , Ensure consistency, improve the consistency of pre-welding preparation and the effect of keyhole stability during welding
Pending Publication Date: 2022-02-18
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD +1
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Problems solved by technology
[0006] However, the method provided by the above-mentioned patent adopts the traditional Y-shaped groove structure, and the process window is narrow when the blunt edge is larger than 2 mm. Furthermore, when welding a long weld, the process stability is insufficient, resulting in unstable weld quality
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Embodiment 1
[0038] A high-power laser arc hybrid welding butt joint, such as figure 1 and 2 As shown, it includes the first to-be-welded joint 1 and the second to-be-welded joint 2 that are arranged oppositely; the inner ends of the first to-be-welded joint 1 and the second to-be-welded joint 2 are sequentially provided with grooves 3 and ordinary joints from top to bottom. The blunt edge 4, the upper part of the ordinary blunt edge 4 is a control blunt edge 5, and the lower part is provided with an L-shaped mouth 6; the grooves 3 of the first joint 1 and the second joint 2 to be welded are arranged symmetrically to form a V-shaped groove 7 with an upward opening , the control blunt sides 5 of the first joint to be welded 1 and the second joint to be welded 2 are in contact with each other, and the L-shaped openings 6 of the first joint to be welded 1 and the second joint to be welded 2 are symmetrically arranged to form a U-shaped groove with an opening downward 8.
[0039] During weld...
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The invention discloses a high-power laser arc hybrid welding butt joint, which relates to the technical field of laser-arc hybrid welding, and comprises a first to-be-welded joint and a second to-be-welded joint which are oppositely arranged, the inner end of the first to-be-welded joint and the inner end of the second to-be-welded joint are each sequentially provided with a groove and a common truncated edge from top to bottom, the upper portion of each common truncated edge is a control truncated edge, and an L-shaped opening is formed in the lower portion of each common truncated edge. The grooves of the first to-be-welded joint and the second to-be-welded joint are symmetrically arranged to form a V-shaped groove with an upward opening, the control truncated edges of the first to-be-welded joint and the second to-be-welded joint are in contact with each other, and the L-shaped openings of the first to-be-welded joint and the second to-be-welded joint are symmetrically arranged to form a U-shaped groove with a downward opening. The stability of the molten pool keyhole is controlled through the special structure of the joint, unstable factors of the original technological process can be controlled from the structural angle, and therefore the consistency of initial welding conditions is greatly guaranteed, the stability of the keyhole in the welding process is improved, and the welding quality in batch production is improved.
Description
technical field [0001] The invention relates to the technical field of laser arc hybrid welding, in particular to a high-power laser arc hybrid welding butt joint. Background technique [0002] Laser arc hybrid welding technology is one of the high-efficiency welding methods that have developed rapidly in recent years. It has the advantages of fast welding speed, small heat-affected zone, small welding stress and deformation, stable welding, and high reliability. In production. It combines the respective advantages of the two independent heat sources of laser and arc, and avoids the shortcomings of the two to a great extent. At the same time, the organic combination of the two has derived many new features, making it a new type of welding with great application prospects. heat source. [0003] In the prior art, in order to improve efficiency, a high-power laser is often used, and a large blunt edge is used for the joint. However, under the requirements of single-sided wel...
Claims
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IPC IPC(8): B23K26/348B23K26/70
CPCB23K26/348B23K26/70
Inventor 李凯王春生陈辉朱宗涛王洪潇
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD