Authors:
Gerald Mitteramskogler (Incus GmbH, Austria),
György Harakaly (Incus GmbH, Austria),
Manuel Grubhofer (Incus GmbH, Austria),
Maximilian Mungenast (Metshape GmbH, Germany),
Andreas Baum (Metshape GmbH, Germany),
György Harakály (Incus GmbH, Austria)
Abstract:
Lithography-based Metal Manufacturing is an AM technology to produce functional metal components with superior surface aesthetics and higher feature resolutions compared to other AM technologies. LMM is applying the principle of photopolymerization to metal manufacturing. The metal powder is dispersed in a light-sensitive resin and the three-dimensional structure developed layer-by-layer with exposure of light. The printed parts have to undergo a debinding and sintering step, similar to other sinter-based metal manufacturing technologies, and afterwards mechanical properties equivalent to Metal Injection Molding (MIM) can be achieved. The sintered 316L parts reached >600 MPa tensile strength and >250 MPa yield strength, independent of the technology related build orientation. Furthermore, Ra surface roughness values for as-sintered parts are <5 µm. The LMM approach enables production of complex geometries without the risk of loss of material during the fabrication process, thus offers a more economically and environmentally feasible metal manufacturing method.
DOI:
https://doi.org/10.59499/WP225366456