Laser beam machining is a process that uses a focused laser beam to remove material from a workpiece through vaporization. The laser beam is concentrated optically to deliver thermal and optical energy to the workpiece. Material is removed by either pulsing the laser beam to create an impulse against the surface, or using a continuous laser beam. Laser beam machining can be used for operations like cutting, welding, and cladding. It offers advantages like being non-contact, allowing machining of hard and soft materials, and flexibility. However, it also has disadvantages like requiring trained operators, being a slow process, needing expensive equipment, and consuming a lot of energy.

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