Abstract
CO2 laser cutting is an advanced processing technology, which can, according to the computer-aided design graphics, cut a variety of shapes in the surfaces of many metallic sheets. Laser cutting of various materials including the Titanium alloy Ti-6Al-4V and pure Titanium Ti is carried out to assess the kerf width size variation along the cut section. This work aims to analyze the effect of laser power, cutting speed, and gas pressure on the kerf quality of Ti-6Al-4V alloy and Ti with CO2 laser cutting process. The kerf width size is formulated and predicted using the lump parameter analysis and it is measured from the experiments. The influence of laser output power Pu and laser cutting speed V and pressure nitrogen assisting gas p on the kerf width size variation is analyzed using the analytical tools including scanning electron and optical microscopes. The quality of laser cut kerf mainly depends on appropriate selection of process parameters. Uniform kerf with minimum kerf width is always demand. It has been found that the kerf width during CO2 laser process is not uniform along the length of cut. A considerable improvement in kerf quality has been achieved.