Industrial Freeform Generation of Microtools by Laser Micro Sintering
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Date
2004
Authors
Regenfuβ, P.
Hartwig, L.
Klötzer, S.
Ebert, R.
Brabant, Th.
Petsch, T.
Exner, H.
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Abstract
Precision tools with structural resolution reaching the 20 micrometer range can be generated on an industrial scale by “laser micro sintering”. Components featuring aspect ratios above 12 and a roughness Ra down to 1.5 micrometers have already been produced from sub micrometer grained metal powders. The components can be generated either firmly attached to a substrate or fixed in an easily separable mode. If supporting structures are employed, undercuts up to 90° are feasible, without, a process parameter dependent maximum angles of undercut below 90° are obtained. The process has been introduced into the market, labeled microSINTERING by 3D-Micromac AG.