Laser Flashcards
1
Q
short pulse vs long pulse lasers
A
long pulse:
- melting
- vaporisation
- micro cracking
- damaged surface
short pulse:
- no debris or microcrackes
- direct solid-vapour transition (none to surrounding material)
- much slower removal rate
2
Q
application of lasers
A
Melting (long):
- surface treatment
- marking
- welding
vaporisation (short):
- drilling
- cutting
- milling/texturing/engraving
3
Q
How is laser assisted machining useful
A
- heated surface = material is softened
- easier cutting
- controlled temperature
4
Q
What are the limitations to laser drilling
A
- limited depth
- tapered walls
- presence of recast layer
- sharp corners
- expensive, high energy consumption
