Selective Laser Melting of Pure Copper
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Appropriate building parameters for selective laser melting of 99.9% pure copper powder were investigated at relatively high laser power of 800 W for hatch pitch in the range from 0.025 mm to 0.12 mm. The highest relative density of the built material was 99.6%, obtained at hatch pitch of 0.10 mm. Building conditions were also studied using transient heat analysis in finite element modeling of the liquidation and solidification of the powder layer. The estimated melt pool length and width were comparable to values obtained by observations using a thermoviewer. The trend for the melt pool width versus the hatch pitch agreed with experimental values.
This research is part of the research project “Next Generation Industrial 3D Printer Technology Project” of the Technology Research Association for Future Additive Manufacturing (TRAFAM), which is supported by the Japanese Ministry of Economy, Trade, and Industry (METI).
Conflict of interest
The authors have no conflicts of interest to declare.
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