Indirect Selective Laser Sintering of 316L Powder and the Properties of the Parts

Abstract:

During selective laser sintering process, different sintering parameters have great impact on the performance of the molded parts, and the degree of influence is different. Using orthogonal test, indirect sintered 316L stainless steel, the compressive strength and precision of the parts were measured and compared to study the influence of various sintering parameters (laser power, scanning speed, scan spacing, preheating temperature) on sintering. The greater degree of influence factors were got by range analysis. The results show that laser power, scanning speed and scan spacing have greater degree of influence on the compressive strength of the parts, and the preheating temperature have less impact. By comparison, the optimum set of parameters was concluded: the laser power is 15W, the scanning speed is 1900mm/s, the scan spacing is 0.125mm, and the preheating temperature is 60°C.

• Periodical: Applied Mechanics and Materials (Volume 775)
• Pages: 209-213
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.775.209
• Online since: July 2015
• Authors: Nai Fei Ren, Ya Hui Hang*, Yan Zhao, Qi Yu Yang
• Keywords: Compressive Strength, Orthogonal Test, Parameters Optimization, Selective Laser Sintering, Sintering Parameters

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