Experimental Investigation into the Single-Track of Selective Laser Melting of IN625

Li Wang; Qing Song Wei; Yu Sheng Shi; Jin Hui Liu; Wen Ting He

doi:10.4028/www.scientific.net/AMR.233-235.2844

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 233-235Experimental Investigation into the Single-Track...

Experimental Investigation into the Single-Track of Selective Laser Melting of IN625

Abstract:

Selective laser melting(SLM) is driven by the need to fabricate functional metallic parts and tools with near shape and density. The method of process to fabricate a metal part will save materials, time and energy compared to the traditional manufacturing methods. Unlike the selective laser sintering (SLS), the metal powder particles are molten by the laser beam during the process of selective laser melting. In this paper, IN625 powders were adopted to investigate the characters of single molten track. The factors that affect the surface quality and relative density are the process parameters such as the laser energy, scan speed and so on. They were studied to find out the correlation between the parameters and formation of single-track. It has been found that Optimal ratio between laser power and scanning speed (P/v) is 1-1.5 for IN625 SLM. P/v is the linear energy density. It also has been found that the width and height of single-track can be calculated when the linear energy density is given. In this study the laser power, scan spacing and the hatch spacing which affect the surface quality and the relative density of the metallic parts were optimized.

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Periodical:

Advanced Materials Research (Volumes 233-235)

Pages:

2844-2848

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.233-235.2844

Citation:

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Online since:

May 2011

Authors:

Li Wang, Qing Song Wei, Yu Sheng Shi, Jin Hui Liu, Wen Ting He

Keywords:

IN625, Melt Pool, Parameter Optimization, Selective Laser Melting (SLM), Single-Track

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