Transcript Laser
Laser cutting system LASER: Light Amplification by Stimulated Emission of Radiation Introduction There are two types of lasers used for cutting: the gaseous CO2 laser the solid-state Nd : YAG laser. Wood Paper Leather Glass Ceramic Metal Applications Steel, Titanium, Paper, Wax, Plastic, Fabric Drawbacks Material limitations (including crystalline and reflective materials) Producing a piercing hole that can make the pattern design more difficult. Reflected laser light can present a safety hazard Economics of Laser Cutters A 1000 – watt laser beam focused to a spot .005 inch in diameter is equal to 5,000,000 watts/square inch Beam Dia.; .005 - .009 inch Optical Unit Mirrors direct the beam from the source down to the lens the lens then focuses the beam into the desired geometry finally the assist gas is added to remove the molten metal www.cncmachines.us Laser Surface-Engineering Processes An outline of laser surface-engineering processes. Source: After N. B. Dahotre. Science The Beam Many factors are material and thickness dependent .0875-.5 inches from the source ~.001 inch at the work piece focal length, beam intensity, reed rate, cut with (kerf), cut time, machine configuration Types of cut Vaporization cutting, Melt and Blow, Thermal stress cracking, Burning Stabilized Bio Implant Laser Surface Texturing Pace Makers Utilizes laser cutting, welding, marking. Applications Few References: George Chryssolouris, J.C Rozzi, Y.C.Shin, B.P.Bandyopadhyay,S.Jahanmir, S.Harimkar, A.Samant, N.Dahotre Processes and Practices • Current Uses of Laser Cutting Systems • Primarily 2D Systems • Either melts, burns, or vaporizes away material • Used to cut flat-sheet metal and piping/structural materials Conclusion There are many useful applications and uses for Laser Cutting in the current manufacturing market Many new innovations are on their way and new uses for this versatile cutting process are cropping up each year