Технология лазерного легирования чугунных изделий

Abstract

The article presents the study results of the microhardness and microstructures of gray cast iron СЧ20 after laser quenching and laser alloying with silicon carbide. The treatment was performed using a continuous CO2 laser with a power of 1 kW at a laser beam speed of 100-1100 mm/min. As a result of laser surface alloying of gray cast iron SiC, the microhardness increased from 2.2 GPA (initial structure) to 10.6...12.8 GPA (after quenching 6.1...7.7 GPA).