Difference between Laser Beam Machining and Electron Beam Machining

Difference between Laser Beam Machining and Electron Beam Machining

The following table lists the difference between laser beam machining and electron beam machining. 

AspectLaser Beam Machining (LBM)Electron Beam Machining (EBM)
Energy SourceLaser beamElectron beam
Working PrincipleThermal energy (heat) used to melt or vaporise materialKinetic energy of high-speed electrons used to remove material
Beam TypeCoherent and focusedFocused and tightly collimated
Material InteractionCan work on a wide range of materials, including metals, ceramics, and plasticsPrimarily suited for conductive materials
Heat-Affected Zone (HAZ)Generally small HAZSmall HAZ due to high-energy electron impact
PrecisionHigh precision achievableVery high precision achievable
Cutting DepthLimited cutting depthCan achieve greater cutting depth
SpeedGenerally slower than EBMGenerally faster than LBM
Beam ControlEasier to control and manipulate the laser beamComplex electron beam control systems required
Vacuum EnvironmentNot typically requiredUsually requires a vacuum environment
Application RangeCutting, engraving, welding, drilling, surface treatmentDrilling, cutting, welding, and surface treatment
Equipment SizeSmaller equipment size typicallyLarger equipment size typically
Energy EfficiencyHigher energy efficiencyLower energy efficiency
Source Page: https://testbook.com/physics/kinetic-energy

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