Multi-laser fusion process with pre-heating for additive manufacturing

Philipp Wagenblast; Jeroen Risse; Sven Schweikert; Jörg Zaiss

doi:10.1117/12.2551154

2 March 2020 Multi-laser fusion process with pre-heating for additive manufacturing

Philipp Wagenblast, Jeroen Risse, Sven Schweikert, Jörg Zaiss

Proceedings Volume 11271, Laser 3D Manufacturing VII; 112710H (2020) https://doi.org/10.1117/12.2551154
Event: SPIE LASE, 2020, San Francisco, California, United States

Abstract

A 500°C preheating system is used in multi-laser fusion processes to overcome defect formation, and to successfully manufacture highly dense, crack-free, low distortion parts from 1.2343 hot working steel and aerospace grade Ti6Al4V ELI. With a three-laser opto-mechanical focusing and scanning system, we demonstrate high precision laser metal fusion over 300mm diameter fullfield overlapping scan fields at high productivity. Results of density, surface quality and material properties are presented. Control of oxygen level in parts and powder is demonstrated over multiple powder reuse cycles.

Citation Download Citation

Philipp Wagenblast, Jeroen Risse, Sven Schweikert, and Jörg Zaiss "Multi-laser fusion process with pre-heating for additive manufacturing", Proc. SPIE 11271, Laser 3D Manufacturing VII, 112710H (2 March 2020); https://doi.org/10.1117/12.2551154

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