Analysis of Process Parameters and Defects in Selective Laser Melting

Author of the article:MA Dawei

Author's Workplace：Structure and Stress Division, Shanghai Aircraft Design and Research Institute, Shanghai 201210, China

Key Words：laser technique; forming quality; selective laser melting (SLM); process parameters

Abstract：Selective laser melting (SLM) is a process of layer by layer accumulation. The structure is printed in the order of single channel scanning (line), single layer scanning (surface) and block forming (bulk). There are many process parameters involved, such as laser inherent parameters, scanning strategy parameters, support structure parameters, etc., and they are mutually coupled. The quality of the parameters directly affects the final mechanical properties and dimensional accuracy of the parts. In this paper, the parameters and defects in the forming process of SLM are sy