Method for preparing amorphous coating in manner of assisting in ultrahigh-speed laser cladding by ultrasonic peening

Abstract

The invention provides a method for preparing an amorphous coating in a manner of assisting in ultrahigh-speed laser cladding by ultrasonic peening. The ultrahigh-speed laser cladding technology and the ultrasonic peening micro forging technology are integrated and combined to be used, a workpiece is subjected to oil removal and rust removal, and the workpiece is mounted and located; amorphous metal powder is dried and is contained in a powder feeder; the laser power, the light spot diameter, the walking speed and the power feed speed are set, and ultrahigh-speed laser cladding equipment is started; the ultrasonic power and the ultrasonic frequency are set, ultrasonic peening equipment is started, and an ultrasonic peening head acts on the specific area of the solidified coating; claddingprocessing is finished, and the amorphous coating is naturally cooled to the room temperature; and the amorphous coating is cleaned by absolute ethyl alcohol, and the amorphous coating is aired afterbeing cleaned. By means of the method, the principles of rapid solidification of the ultrahigh-speed laser cladding technology, control solidification, stress elimination and micro defect eliminationof the ultrasonic peening micro forging technology and the like are fully utilized, and high-efficiency and high-quality preparation of the amorphous coating is achieved.

Description

technical field [0001] The invention relates to a method for preparing an amorphous coating by ultra-high-speed laser cladding assisted by ultrasonic impact, and belongs to the technical field of laser cladding manufacturing of amorphous coatings. Background technique [0002] Amorphous alloys, also known as metallic glasses, have metastable structural characteristics of long-range disorder and short-range order. In solid state, the three-dimensional space of its atoms is topologically disordered and this state remains relatively stable within a certain temperature range. Compared with traditional crystalline alloys, amorphous alloys have many excellent properties, such as high strength, high hardness, high corrosion resistance and wear resistance. The preparation of amorphous alloys requires a rapid solidification process, and the process conditions are harsh, so the preparation technology of large bulk amorphous alloys is difficult; the shortcomings of amorphous alloys suc...

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a method for preparing amorphous coatings by ultrasonic impact-assisted ultra-high-speed laser cladding, which is used to realize rapid preparation of amorphous coatings, and solves the problem of difficulty in large-area preparation of amorphous coatings, low preparation efficiency, and problems in amorphous coatings. The content of amorphous phase is not high, the coating density is not high, and cracks are easy to occur.

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