Laser cutting systemLaser cutting system

LASER: Light Amplification by Stimulated

Emission of Radiation

IntroductionIntroduction There are two types of lasers used for

cutting: the gaseous CO2 laser the solid-state Nd : YAG laser.

ApplicationsApplications Wood Paper Leather Glass Ceramic Metal

Steel, Titanium, Paper, Wax, Plastic, Fabric

DrawbacksDrawbacks

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 CuttersEconomics of Laser CuttersA 1000 – watt laser beam focused to a spot .005 inch in diameter is equal to 5,000,000 watts/square inchBeam Dia.; .005 - .009 inch

Optical UnitOptical 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

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Laser Surface-Engineering Laser Surface-Engineering ProcessesProcesses

An outline of laser surface-engineering processes. Source: After N. B. Dahotre.

ScienceScience 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 ImplantBio Implant

Laser Surface TexturingLaser Surface Texturing

Utilizes laser cutting, welding, marking.

Pace MakersPace Makers

ApplicatioApplicationsns

Few References: George Chryssolouris, J.C Rozzi, Y.C.Shin,

B.P.Bandyopadhyay,S.Jahanmir, S.Harimkar, A.Samant, N.Dahotre

Processes and PracticesProcesses 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

ConclusionConclusion 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