Dimensional and material characteristics of direct deposited tool steel by CO<sub>2</sub> laser

J. Choi

doi:10.1117/12.660326

9 June 2006 Dimensional and material characteristics of direct deposited tool steel by CO₂ laser

J. Choi

Proceedings Volume 6053, International Conference on Lasers, Applications, and Technologies 2005: High-Power Lasers and Applications; 60530N (2006) https://doi.org/10.1117/12.660326
Event: International Conference on Lasers, Applications, and Technologies 2005, 2005, St. Petersburg, Russian Federation

Abstract

Laser aided direct metalimaterial deposition (DMD) process builds metallic parts layer-by-layer directly from the CAD representation. In general, the process uses powdered metaUmaterials fed into a melt pool, creating fully dense parts. Success of this technology in the die and tool industry depends on the parts quality to be achieved. To obtain designed geometric dimensions and material properties, delicate control of the parameters such as laser power, spot diameter, traverse speed and powder mass flow rate is critical. In this paper, the dimensional and material characteristics of directed deposited H13 tool steel by CO₂ laser are investigated for the DMD process with a feedback height control system. The relationships between DMD process variables and the product characteristics are analyzed using statistical techniques. The performance of the DMD process is examined with the material characteristics of hardness, porosity, microstructure, and composition.

Citation Download Citation

J. Choi "Dimensional and material characteristics of direct deposited tool steel by CO₂ laser", Proc. SPIE 6053, International Conference on Lasers, Applications, and Technologies 2005: High-Power Lasers and Applications, 60530N (9 June 2006); https://doi.org/10.1117/12.660326

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