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1. GANDHINAGAR INSTITUTE OF
TECHONOLOGY(012)
SUBJECT : Production Technology
(2161909)
Active Learning Assignment on the topic of
“Laser Beam Machining”
BE Mechanical
Prepared By:
Guided By : Prof. Chintan Barelwala

2. OVERVIEW
 Introduction of LBM
 Operations
 Advantages
 Disadvantages
 Reference

3. What is LASER?
 LASER stands for Light Amplified Stimulated Emission of
Radiation.
 Laser is a device which generates or amplifies light.
 Stimulated emission of electromagnetic radiation.
 Coherent, monochromatic, directional and high power laser
beam is used.

4. Laser Beam Machining
 In this process LASER is focused on workpiece by
optical lance.
 Used light energy from a laser to remove material by
vaporization.
 Energy is concentrated optically.
 Thermal and Optical energy is used in this process.
 Light beam pulsed so that the released energy results
in an impulse against the work surface, producing
evaporation and melting.

5. Operation: Laser Cutting
 Cutting starts by drilling a hole by moving beam.
 Cutting speed depends on material and thickness.
 Both pulsed and continuous laser is used.
 Thickness ranges from 0.5-1 inch.
 Used for cutting complex geometry and for clean
cutting operation.

6. Operation: Laser Welding
 For welding ceramics and dissimilar materials like
steel and aluminium.
 Produces maximum penetration and minimum
distortion in materials.
 Beam can be easily shaped, focused and directed.
 Application:
 Razor Blade
 Electronic Circuit

7. Operation: Laser Cladding
 Used to improve surface quality by applying a
corrosion resistant layer on Product.
 Laser Beam is used to create a shallow melt pool.
 Metal powder is supply using an inert gas flow.
 Application:
• Chemical industry.
• Mining and marine application.

8. Advantages
 Non Contact.
 No solvent chemical.
 Machining of Hard & soft material.
 Flexibility.
 Fully automated.

9. Disadvantages
 Requires specially trained operators.
 This process is very slow.
 Expensive equipment.
 Consumes much energy.

10. Thank You