Quality Analysis of Pulsed Laser Cutting of Superalloy Sheet |
| Journal |
Key Engineering Materials (Volumes 315 - 316) |
| Volume |
Advances in Machining & Manufacturing Technology VIII |
| Pages |
113-117 |
| DOI |
10.4028/www.scientific.net/KEM.315-316.113 |
| Online since |
July, 2006 |
| Authors |
S.J. Lv,
Yang Wang,
Shi Jun Ji
|
| Keywords |
Laser Cutting, Quality Analysis, Recast Layer, Superalloy |
| Abstract |
This paper presents the experiments of Nd:YAG pulsed laser cutting of GH3536 superalloy
sheet and investigates the influences of different cutting parameters on laser cut quality factors
including recast layer, kerf width and dross formation. The results show that the recast layer possesses
finer granularity and higher hardness than those of the matrix, and the thickness of recast layer
increases with increased pulse energy and decreases as the cutting speed and gas pressure increase.
Oxygen-assisted cutting comes with thick recast layers and argon-assisted cutting acquires thin layers.
The low-strength oxide layer worsens the kerf surfaces in oxygen-assisted cutting while
argon-assisted cutting produces unaffected surface quality and is suitable for applications with
subsequent welding. |
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