Galvanized steel welding method

A welding method, galvanized steel technology, applied in welding equipment, laser welding equipment, metal processing equipment, etc., can solve the problem of a large number of pores and achieve the effect of reducing a large number of pores

Inactive Publication Date: 2019-01-11
WUHAN RAYCUS FIBER LASER TECHNOLOGY CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present invention provides a welding method for galvanized steel to solve the problem of a large number of pores during welding in the prior art

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Embodiment Construction

[0016] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0017] figure 1 It is a flow chart of a welding method for galvanized steel in an embodiment of the present invention, as figure 1 As shown, the welding method includes:

[0018] S1, outputting the first laser light through the first laser module;

[0019] S2, outputting the second laser through the second laser module;

[0020] S3, output a c...

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Abstract

The embodiment of the invention provides a galvanized steel welding method. The welding method comprises the steps of conducting collimation on first laser through a first collimating mirror; conducting collimation on second laser through a second collimating mirror; conducting focusing on the collimated first laser and the collimated second laser through a focusing mirror, wherein the focused first laser is coaxial with the collimated second laser. According to the galvanized steel welding method provided by the embodiment of the invention, two laser beams with different focusing spot diameters are adopted, the weld penetration depth and the welding efficiency are ensured through the laser with the small focused spot diameter, and through the laser with the large focused spot diameter, azinc layer of the area to be welded is destroyed, the volume of a molten pool is expanded, and the cooling speed of the molten pool is reduced so that the problem of a great number of pores existing in the welding process can be reduced.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of laser welding, in particular to a welding method for galvanized steel. Background technique [0002] With the rapid development of the automobile manufacturing industry, in order to improve the service life of automobiles, galvanized steel has been widely used because of its good corrosion resistance. The galvanized layer of zinc steel has as little loss as possible, and high-efficiency and high-quality welds can be obtained. [0003] The traditional welding process mainly uses manual arc welding, gas metal arc welding, argon arc welding, resistance welding and other methods to connect. Since the melting point of zinc is about 420°C and the boiling point is about 907°C, while the melting point of steel is about 1540°C, when the traditional welding process is used, when the steel reaches the melting point, the zinc has already been vaporized, resulting in a large number of pores, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/21B23K26/24
CPCB23K26/21B23K26/24
Inventor 吴泽锋汪伟龚均明周晚君金超李响
Owner WUHAN RAYCUS FIBER LASER TECHNOLOGY CO LTD
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