Ultrasonic and Induction Heating Assisted Laser Cladding of Composite Nanocoatings

Abstract

The present invention provides an ultrasonic and induction heating assisted laser cladding method for a composite nano-coating, comprising a laser, a preset layer, a substrate, a workbench, an ultrasonic vibrator and an induction heating coil, specifically comprising the following steps: Step 10, substrate pretreatment Finally, place the preset layer on the substrate, place the substrate with the preset layer on the workbench; move the laser head of the laser to the position to be clad on the substrate; step 20, turn on the induction heating coil, and the induction heating coil heats the substrate And preset the layer to 200-400°C; step 30, turn on the laser and ultrasonic vibrator, the laser performs laser cladding on the substrate through the laser head, and the ultrasonic vibrator provides ultrasonic assistance to the laser cladding process; step 40, the end of laser cladding Finally, turn off the ultrasonic vibrator and the laser; step 50, turn off the induction heating coil; step 60, take out the substrate that has been laser clad.

Description

technical field [0001] The invention relates to the technical field of surface engineering, in particular to a laser cladding device and method assisted by ultrasonic and induction heating of a composite nano-coating, and also relates to a nano-material composite gradient thermal barrier coating that is wear-resistant at high temperatures. Background technique [0002] Laser cladding technology refers to the placement of selected coating materials on the surface of the coated substrate in different ways of adding materials, and the high-energy laser beam melts it and the substrate surface-thin layer at the same time, and forms a very low dilution after rapid solidification. , A surface coating that forms a metallurgical combination with the base material, thereby significantly improving the wear resistance, corrosion resistance, heat resistance, oxidation resistance, etc. of the base material surface. [0003] As an emerging technology in the field of surface engineering tec...

AI Technical Summary

Problems solved by technology

But its disadvantages are: laser cladding is a complex physical, chemical and metallurgical process, and the cladding layer is prone to tensile stress during rapid laser heating and cooling and melting and solidification, which greatly increases the crack sensitivity.

Nano-powder has the following disadvantages in use: nano-powder is easy to agglomerate and easy to gasify and splash, causing problems such as voids, burning, cracks and peeling off of the cladding layer

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