Laser Beam Machining :
Laser Beam Machining (b) Laser beam machining
Cutting and hole making on thin materials; heat-affected zone; does not require a vacuum; but expensive equipment; consume much energy; 0.5-7.5 mm/min depending on thickness.
Laser Beam Machining :
Laser Beam Machining Laser Concept Add energy to make electrons “jump” to higher energy orbit
Electron “relaxes” and moves to equilibrium at ground-state energy level
Emits a photon in this process (key laser component)
Two mirrors reflect the photons back and forth and “excite” more electrons
One mirror is partially reflective to allow some light to pass through: creates narrow laser beam Photon Emission Model
Slide 4:
More precise
Useful with a variety of materials: metals, composites, plastics, and ceramics
Smooth, clean cuts
Faster process
Decreased heat-affected zone Laser Beam Machining