A method of ultra-high-speed laser cladding complex curved surface of revolution

Abstract

The invention relates to laser cladding technology, in particular to a method for ultra-high-speed laser cladding of a complex curved surface revolving body. In this method, parameters such as the cladding line speed V are first set according to the process requirements; according to the lap rate δ and the width D L Parameters, the fitting calculation is performed on the profile generatrix of the complex curved surface, and the ultra-high-speed laser cladding path of the complex curved surface is set as an i-segment space helix; the rotation angular velocity ω when the ultra-high-speed laser cladding complex curved surface is obtained i and the moving speed of the laser cladding head along the X-axis along the Y-axis and the rotational angular speed of the laser cladding head ε i , to ensure that the cladding line speed V remains stable. Through this method, the relative motion between the ultra-high-speed laser cladding head and the high-speed rotating complex rotary body can be efficiently regulated, effectively ensuring the stability of the parameters in the ultra-high-speed laser cladding process, and stabilizing the cladding efficiency while ensuring the cladding quality. Good metallurgical bonding, dense and uniform cladding layer.

Description

technical field [0001] The invention relates to a laser cladding technology, in particular to a method for ultra-high-speed laser cladding of a complex curved surface revolving body. Background technique [0002] In 2017, the Ultra High-Speed ​​Laser Cladding technology (Ultra High-Speed ​​Laser Cladding) proposed by the Fraunhofer Institute in Germany, the cladding rate can reach 25-200m / min, and the laser is focused on the workpiece during processing, so that most of the energy is used. For the powder above the workpiece, using this method, the heat input of the matrix during the cladding process is extremely small, but it can ensure that the powder and the matrix are fully metallurgically combined, and the general dilution rate is only about 2 to 4%. Therefore, ultra-thin and high-quality coatings can be prepared. According to different cladding rates, the thickness of the coating is basically only between 25 and 400 μm, and the surface finish of the coating is very good....

AI Technical Summary

Problems solved by technology

However, for complex gyratory with changing radius of gyration, along with the radius of gyration R 回 If the same cladding strategy is maintained, it will lead to different cladding speeds on the surface and changes in the cladding overlap rate. For ultra-high-speed cladding, the cladding quality and Huge variation in coating thickness

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