Laser aided direct metal/material deposition (DMD) process builds metal parts layer-by-layer directly from the CAD representation. Success of this technology in the die and tool industry depends on the parts quality to be achieved. To get designed geometric dimensions and material properties, delicate control of the process variables such as laser power, spot diameter, traverse speed and powder mass flow rate is critical. With a closed loop optical height control system, the dimensional accuracy was achieved within designed tolerance. To establish the deposited material completeness, the effects of the process variables on macro and microstructure and mechanical properties of H13 tool steel samples were investigated using a statistical technique, the Design of Experiments (DOE). The experimental data were analyzed to determine optimal process parameters and to verify dimensional and material characteristics of the part, and the results were summarized in the paper.
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ICALEO 2002: 21st International Congress on Laser Materials Processing and Laser Microfabrication
October 14–17, 2002
Scottsdale, Arizona, USA
ISBN:
978-0-912035-72-7
PROCEEDINGS PAPER
Dimensional and material characteristics of direct deposited tool steel by CO2 laser Available to Purchase
Published Online:
October 01 2002
Citation
J. Choi, Y. Hua; October 14–17, 2002. "Dimensional and material characteristics of direct deposited tool steel by CO2 laser." Proceedings of the ICALEO 2002: 21st International Congress on Laser Materials Processing and Laser Microfabrication. ICALEO 2002: 21st International Congress on Laser Materials Processing and Laser Microfabrication. Scottsdale, Arizona, USA. (pp. 237126). ASME. https://doi.org/10.2351/1.5065728
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