Development and performance evaluation of industrial 3D real object duplication system by selective dual-laser sintering process Available to Purchase

Rapid Prototyping (RP) technology using Selective Laser Sintering (SLS) has been applied in many industrial areas such as modeling shape verification, machinery, materials and automobiles. It is supposed to be able to build in a short time any shape by layer-by-layer sintering of polymer, ceramic or metal powder. In order to develop more elaborate and speedy system for large objects than existing SLS, this study applies a new Selective Dual-Laser Sintering (SDLS) process. Also it has used 3-axis Dynamic Focusing Scanner for scanning large area instead of the existing fθ lens using commercial SLS. The dimensions of prototype can be produced 500(W) × 800(D) × 500(H) mm³ from building room. To achieve the high performance, the structure analysis and the development of control algorithm for sintering process has performed. In this process, the sintering temperature, laser beam power and layer thickness have a great influence on sintering of the polymer. Temperature of building room and location of z-axis for lamination have controlled with accuracy. Also, Sintering test of polymer have performed with laser beam power range from 0 to 30 Watt. And the parameters of laser are considered like that scan speed, scan spacing. This study is in progress to evaluate the effect of experimental parameters on the sintering process.