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 .0875-.5 inches from the source ~.001 inch at the work piece Many factors are material and thickness dependent 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
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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