The term laser is an acronym for Light Amplification by Stimulate Emission of Radiation. A laser beam is a powerful, narrow, monochromatic and directional beam of electromagnetic radiation. Often , these beams are within the visible spectrum of light. A laser device excites the atom in a lasing medium. The electrons of these atom move to a higher orbit, then release photons, creating a laser beam.

1. LASER BEAM MACHINING
NAME :- NAYAN DIPAK GAYKWAD
STD :- T.Y. MECHANICAL
SUB :- PPT
ROLL NO. :- 33227

3. THEEM COLLEGE OF ENGINEERING

4. WHAT IS LASER BEAM ?
o The term laser is an acronym for Light Amplification by Stimulate Emission of Radiation.
o A laser beam is a powerful, narrow, monochromatic and directional beam of electromagnetic radiation.
o Often , these beams are within the visible spectrum of light.
o A laser device excites the atom in a lasing medium. The electrons of these atom move to a higher orbit, then release
photons, creating a laser beam.

5. Full Form of LASER :-
L :- Light
A :- Amplification By The
S :- Stimulated
E :- Emission Of
R :- Radiation

6.  Uses the light energy from a laser to remove material by
vaporization and ablation
Laser Beam Machining (LBM)
The punch
is a light
beam

7. Laser-Beam Machining
Uses a concentrated beam of light to vaporize part of the
workpiece
Usually produces a rough surface with a heat-affected zone
Can cut holes as small as .005 mm with depth/diameter
ratios of 50:1

9. LBM Applications
 Drilling, slitting, slotting, scribing, and marking operations
 Drilling small diameter holes - down to 0.025 mm (0.001 in)
 Generally used on thin stock
 Work materials: metals with high hardness and strength, soft
metals, ceramics, glass and glass epoxy, plastics, rubber, cloth, and
wood

10. Advantages of laser cutting
o No physical contact with work piece.
o Small heat affected zone ( less than plasma ).
o Minimal material warping.
o Precision cutting.
o Complex contours.
o Intricate shapes

11. Disadvantages
• Requires specially trained operators
• Not for mass metal removal processes
• Requires greater control of joint tolerances
• Expensive equipment
• Consumes much energy

12. Summary
Advanced machining processes offer alternatives
where conventional procedures would be
insufficient or uneconomical

13. Thank You