Laser beam’s focused properties and its transmission and transformation in selective laser melting
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1.
School of Mechanical Engineering, South China University of Technology, Guangzhou 510640, China;
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2.
College of Science, Guangdong Ocean University, Zhanjiang 524088, China
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Corresponding author:
YANG Yong-qiang, meyqyang@scu.tedu.cn
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Received Date:
2007-01-29
Accepted Date:
2007-08-23
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Abstract
In order to obtain the laser beam with better beam quality,smaller spot diameter and higher power density in rapid prototyping for selective laser melting(SLM),Gaussian beam used in SLM was transmitted and transformed.The theoretic and experimental transmission,transformation and focused characteristic properties were analyzed.The experimental results are consistent with the theoretic ones.The smaller spot with power density above 106W/cm2 which is applicable in SLM,was obtained.When used in 3-D rapid prototyping for SLM of Ni-based alloy and Cu-P alloy powder,it also indicated feasible and effectual,and met the demands of spot diameter and power density.
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