Shahrood University of Technology Journal of Solid and Fluid Mechanics 2251-9475 7 4 2017 12 22 Experimental investigation of fabricated parts by laser melting of iron powder to achive turning point between sintering process and complete melting Experimental investigation of fabricated parts by laser melting of iron powder to achive turning point between sintering process and complete melting 61 72 1172 10.22044/jsfm.2017.5481.2343 FA S. A. Fatemi J. Z. Ashany A. Hadavand Journal Article 2017 03 06 One of the main goals of researchers in the laser sintering process of metal powders, is optimization of process parameters in order to reach the properties of manufactured parts to the raw material properties. For this purpose, many experiments have been performed and parameters such as density, hardness, strength and surface quality in different condition of process parameters have been studied. In order to produce a fully dense multi-layer parts, it is necessary to optimise the process parameters of a mono-layer part. In the present study, experiments have performed on a powder bed with thickness of 5mm. The fabricated parts have been produced by a single laser scanning of powder bed. By Laser radiation on the powder bed, circular pieces with a diameter of 20 mm have been produced. Results showed that turning point between the sintering process and the complete melting is the best process condition in sintering process. One of the main goals of researchers in the laser sintering process of metal powders, is optimization of process parameters in order to reach the properties of manufactured parts to the raw material properties. For this purpose, many experiments have been performed and parameters such as density, hardness, strength and surface quality in different condition of process parameters have been studied. In order to produce a fully dense multi-layer parts, it is necessary to optimise the process parameters of a mono-layer part. In the present study, experiments have performed on a powder bed with thickness of 5mm. The fabricated parts have been produced by a single laser scanning of powder bed. By Laser radiation on the powder bed, circular pieces with a diameter of 20 mm have been produced. Results showed that turning point between the sintering process and the complete melting is the best process condition in sintering process. https://jsfm.shahroodut.ac.ir/article_1172_175be9fdd3a637656b9d0c88634b367a.pdf