US Patent No. 10,507,526

METHOD AND DEVICE FOR THE ADDITIVE MANUFACTURE OF AT LEAST ONE COMPONENT REGION OF A COMPONENT


Patent No. 10,507,526
Issue Date December 17, 2019
Title Method And Device For The Additive Manufacture Of At Least One Component Region Of A Component
Inventorship Christian Liebl, Bockhorn (DE)
Alexander Ladewig, Bad Wiessee (DE)
Laura Buerger, Dachau (DE)
Georg Schlick, Munich (DE)
Steffen Schlothauer, Erdweg (DE)
Karl-Heinz Dusel, Unterschleissheim (DE)
Assignee MTU Aero Engines AG, Munich (DE)

Claim of US Patent No. 10,507,526

1. A method for the additive manufacture of at least one region of a component, comprising the following steps:a) layer-wise application of at least one powder-form component material onto a component platform in the region of a build-up and joining zone;
b) layer-wise and local solidifying of the component material by selective exposure of the component material by at least one high-energy beam in the region of the build-up and joining zone, with the formation of a component layer;
c) layer-wise lowering of the component platform by a pre-defined layer thickness; and
d) repeating steps a) to c) until the component region or the component has been completely fabricated;
wherein during at least one step b), at least one exposure parameter of the high-energy beam from the group: power, velocity, and focal position, is adjusted as a function of at least one construction parameter from the group: component thickness, hatch distance to an adjacent exposure trace, angle of incidence of the high-energy beam relative to the surface of the component layer, angle of deflection of the high-energy beam with respect to a vertical axis of the component layer, overhang angle of the component layer, layer thickness of the component layer, and distance from a complete volume element of the component layer, and
wherein during at least one step b), the method further comprises determining, with a controller, at least the overhang angle of the component layer, and adjusting
at least the exposure parameter, power, of the high-energy beam to reduce the power, when compared to the power in an inskin region, if the construction parameter, overhang angle, of the component layer in the exposed region corresponds to a downskin region, and
at least the exposure parameter, power, of the high-energy beam to increase the power, when compared to the power in an inskin region, if the construction parameter, overhang angle, of the component layer in the exposed region corresponds to an upskin region.