Aluminum alloy medium-thickness plate laser welding device and method

A technology of laser welding and aluminum alloy, which is applied in laser welding equipment, welding equipment, metal processing equipment, etc., and can solve the problem of reducing the effect of removing pores

Active Publication Date: 2019-08-27
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

If low-frequency oscillation is used, although the depth of penetration is improved to a certain extent, the effect of removing pores is correspondingly reduced

Method used

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  • Aluminum alloy medium-thickness plate laser welding device and method
  • Aluminum alloy medium-thickness plate laser welding device and method
  • Aluminum alloy medium-thickness plate laser welding device and method

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] The object of the present invention is to provide a laser welding device and method for aluminum alloy medium and thick plates to solve the problems existing in the above-mentioned prior art, so that the laser welding of aluminum alloy medium and thick plates can eliminate pores under the premise of ensuring the penetration depth, and improve the welding efficiency. quality.

[0028] In order to make the above objects, features and advantages of the pre...

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Abstract

The invention discloses an aluminum alloy medium-thickness plate laser welding device. The laser welding device comprises a first laser, a second laser, a first collimating mirror, a refraction mirror, a rotating platform, a reflecting mirror, a focusing lens and a second collimating mirror are arranged in sequence, the first laser device can emit a first light beam, the second laser device can emit a second light beam, the top surface of the refraction mirror is a plane and is arranged towards the first collimating mirror, the bottom surface of the refraction mirror is an inclined plane, therefraction mirror is connected with the rotary platform, the reflecting mirror can reflect the second light beam, the first light beam can penetrate through the reflecting mirror, and the focusing mirror can be used for focusing the first light beam and the second light beam. The device further provides a laser welding method for the aluminum alloy medium-thickness plate, the second light beam moves along the welding line direction of the workpiece to be welded, the focused second light beam moves along the welding line direction of the workpiece to be welded, the second light beam rotates around the focused first light beam, the first light beam can ensure the welding penetration depth, the second light beam rotates around the first light beam, and the stirring molten pool can eliminate air holes.

Description

technical field [0001] The invention relates to the technical field of laser welding, in particular to a laser welding device and method for aluminum alloy medium and thick plates. Background technique [0002] Aluminum alloy plate welding is a key technology in the manufacturing process of high-performance equipment for major national strategic projects such as aerospace, energy chemical industry, and rail transit. Although the traditional arc welding method has the advantages of simple equipment, convenient operation, and low cost, it has been gradually replaced by more advanced laser welding due to its problems such as extremely low efficiency, poor weld quality, and harsh operating environment. Laser welding has become a widespread trend for components that require high welding performance. [0003] However, during the laser welding process, part of the molten pool is gasified and plasmaized, forming a unique keyhole (keyhole) structure, and the inner surface of the key...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/064B23K26/067B23K26/21
CPCB23K26/064B23K26/0673B23K26/21
Inventor 马修泉米高阳邵新宇许天宇
Owner HUAZHONG UNIV OF SCI & TECH
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