A method for ultra-high-speed laser cladding on the end face of disk parts

Abstract

The invention relates to a method for ultra-high-speed laser cladding of the end faces of disc parts. In this method, firstly, the notched ring I and the notched ring II are set on the outer circle and inner hole of the disc part, and the cladding rate V is set according to the process requirements. 1 , cladding overlap ratio η, laser beam power P and other parameters; then according to the cladding overlap ratio η and ultra-high-speed laser cladding single-track width D L and other parameters, the ultra-high-speed laser cladding path is planned as an equidistant spiral with the starting point on the inner hole section line of the end face of the disc part, and the end point on the outer circular section line of the end face of the disc part; at the same time, an equiangular node is set, and the equidistant spiral is set. The line is divided into multiple equal-spaced helical arcs, and by changing the rotational angular velocity ω of the disc-like parts when the ultra-high-speed laser clads each equal-spaced spiral arc i The cladding is carried out by means of the moving speed of the ultra-high-speed laser cladding head to ensure the stability of various parameters during the cladding process; finally, the notched ring I, the notched ring II and the disc parts are separated by wire cutting.

Description

technical field [0001] The invention relates to laser cladding technology, in particular to a method for ultra-high-speed laser cladding on the end faces of disk parts. Background technique [0002] In 2017, the Ultra High-Speed ​​Laser Cladding technology (Ultra High-Speed ​​Laser Cladding) was proposed by the Fraunhofer Institute in Germany. The cladding rate can reach 25-200m / min. During the processing, the laser is focused on the workpiece, so that most of the energy acts 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 sufficient metallurgical bonding between the powder and the matrix, 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. It can be put i...

AI Technical Summary

Problems solved by technology

[0005] At present, there are few domestic data on ultra-high-speed laser cladding, and it is generally used in the processing of the outer circle of shaft parts, and there are few studies on the end face cladding process of disc parts.

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