Study of laser smelting-cladding WC-TiC-SiC-Co on carbon steel surface

This paper presents the experimental research of smelting-cladding WC-TiC-SiC-Co on 20# steel surface by using a high power CO2 laser.The physic phases analysis of the treated cladding layer are made. A scanning electronic microscope is used to observe the microstructure at the different scanning speed, and the hardness and anti-abrasion are tested. The formation mechanism of the laser smelting-cladding layer is discussed.The experimental results indicate that the WC-TiC-SiC-Co cladding layer on low carbon steel surface greatly improves the mechanical performance of the steel surface.