Theoretical Study on Overlapping Mechanism in SLM Based on Interlayer-Staggered Scan Strategy
In the study of the overlapping mechanism in selective laser melting (SLM) process based on interlayer-staggered scan strategy, relationship between the intra-layer overlapping rate and the inter-layer overlapping rate was obtained by theoretical deduction based on the continuity of layers; the overlapping mechanism and the depositing efficiency were later analyzed. Results showed that three types of overlapping mechanism exist under different values of overlapping rate: the intra-layer overlapping mechanism, the inter-layer overlapping mechanism and the mixed overlapping mechanism with coexistence of the first two types; the maximal depositing efficiency of intra-layer overlapping mechanism and inter-layer overlapping mechanism is 0.38 and 0.5 respectively. This study has provided basic theory for improving depositing efficiency in SLM process.
X. B. Su et al., "Theoretical Study on Overlapping Mechanism in SLM Based on Interlayer-Staggered Scan Strategy", Applied Mechanics and Materials, Vols. 44-47, pp. 1482-1486, 2011