Influence of intensity distribution on the meltpool and clad shape for laser cladding

Lange de, D.F. and Hofman, J.T. and Meijer, J. (2005) Influence of intensity distribution on the meltpool and clad shape for laser cladding. In: Third International WLT-conference on Lasers in Manufacturing, June 13th - 16th, 2005, Munich, Germany.

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Abstract:	The influence of the optical system on the laser cladding process is studied, in particular with respect to the burn-in shape: the penetration of the meltpool into the substrate. The beam caustic and intensity profiles for the commonly used out-of-focus laser clad operation are presented and discussed. To avoid the disadvantages of the out-of-focus operation, a novel telezoom optical system is developed, which allows in-focus operation with a sufficiently large focus with a uniform intensity distribution and a spot diameter ranging from 3 up to over 6 mm. Different typical burn-in shapes are indicated, as they can be found in cross sections of experimental clads. The influence of the intensity distribution on the occurring burn-in shapes is discussed, as well as other phenomena that can play a role, such as flow recirculation cells in the meltpool.
Item Type:	Conference or Workshop Item
Faculty:	Engineering Technology (CTW)
Link to this item:	http://purl.utwente.nl/publications/52655
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