A method for preparing amorphous coatings by ultrasonic shock-assisted ultra-high-speed laser cladding

Abstract

The invention discloses a method for preparing an amorphous coating by ultrasonic impact assisted ultra-high-speed laser cladding, which integrates ultra-high-speed laser cladding technology and ultrasonic impact micro-forging technology for composite use, degreasing and rust-removing workpieces, installation and positioning; amorphous metal Dry the powder and load it into the powder feeder; set the laser power, spot diameter, walking speed, and powder feeding rate, and turn on the ultra-high laser cladding equipment; set the ultrasonic power, ultrasonic frequency, turn on the ultrasonic impact equipment, and the ultrasonic impact head It acts on a specific area of ​​the solidified coating; after the cladding process is completed, the amorphous coating is naturally cooled to room temperature; the amorphous coating is cleaned with absolute ethanol, and dried after cleaning; the invention makes full use of the ultra-high-speed laser cladding technology The principles of "rapid solidification" and "controlled solidification", "stress relief" and "microscopic defect elimination" of ultrasonic impact micro forging technology realize high-efficiency and high-quality manufacturing of amorphous coatings.

Description

technical field [0001] The invention relates to a method for preparing an amorphous coating by ultrasonic impact-assisted ultra-high-speed laser cladding, and belongs to the technical field of laser cladding manufacturing of the amorphous coating. Background technique [0002] Amorphous alloys, also known as metallic glasses, have metastable structural characteristics of long-range disorder and short-range order. In the solid state, the three-dimensional space of their 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, which requires harsh process conditions, so the preparation of bulk amorphous alloys is difficult. The room temperature brittle fracture of amorph...

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.

Images