Laser welding and electron beam welding have several key differences: 1) Laser welding has a high welding speed while electron beam welding allows for deeper penetration. 2) Laser welding requires a shielding gas like nitrogen or argon, while electron beam welding is performed in a high vacuum environment. 3) Electron beam welding has higher power efficiency than laser welding and requires a high purity cooling system, while laser welding has higher running costs due to shield gas consumption.

1. Difference between Laser and
electron beam welding
By : Basel Raafat Radwan Saleh Selim
3rd
year
Production and mechanical design department
Supervisor : Dr. Hassan Abdelhafez

2. References:
ebeinc.com , accutektesting.com
Laser Welding
Electron Beam
Welding
High speedHigh speed1-High welding speed
Lack penetrationDeep penetration2-Penetration
Needs the shielding gas
normally nitrogen or
argon to stop oxidisation
of the weld area and weld
pool
Not required3-Filler gas or
shielding gas
Performed in air or
shielding gas
Performed in a high
vacuum environment,
which is particularly suited
to titanium
4-Surrounding
environment
7:10%80:90%5-Power efficiency
Consumption of shield gas
high Electricity
Requires high purity water
in cooling system to cool
beam source
Cooling water
Electricity
6-Running cost
CleanCleanWelds-7
High control of the
parameters
High control of the
parameters
controllable-8
NarrowNarrowerWeld zone-9
Can weld any size of work
pieces
Size of work pieces is
controlled by the volume
of the vacuum chamber
Size of work-10
pieces
Low costHigh costCost-11
Small HAZSmaller HAZHAZ-12
No X-rays generatedX-rays is generated-Generation of X-13
rays