Product Code: ICAL09_1303

The Exploration on Laser Vertical Sintering with Magnetic Field
Authors:
Xiaogang Li, National Center of Laser Technology, Beijing University of Technology; Beijing Peoples Republic of China
Jimin Chen, National Center of Laser Technology, Beijing University of Technology; Beijing Peoples Republic of China
Furong Liu, National Center of Laser Technology, Beijing University of Technology; Beijing Peoples Republic of China
Penfei Lv, National Center of Laser Technology, Beijing University of Technology; Beijing Peoples Republic of China
Presented at ICALEO 2009

Selective Laser Sintering (SLS) is a fast developing technology of Rapid Manufacturing (RM). In some case vertical sintering using laser to repair big part in work site is inevitable. In this paper, an approach of laser vertical sintering with magnetic field has been explored. The powder was paved on a substrate with the magnetic field which plays a very important role to affect the quality of paving powder. Under the control of magnetic field a tight part with specific thickness and shape could be made. The laser beam scanned the part with different strategies on the vertical plane. During the entire operation the powder can be controlled easily and a clean workplace can be achieved. With the effect of the magnetic field, the sintered tropism and density of the powder differ from conventional method. Different magnetic field will lead to different powder tropism. The magnetic field can be used to improve the quality of crystallization during sintering. The powder was sintered and added stepwise on the upright plane and the shape of melting pool was affected by its gravitation. To some extent, using laser beam to sinter powder vertically has an obvious advantage of its process mechanism, which has great potential to reach comprehensive applications in industry.