Patent ID: 11926092
Assignee: SINTRATEC AG
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  Y | IPC B

Claim 14:
15. A method for operating an additive manufacturing device for manufacturing a solid article by an additive manufacturing method, comprising a laser generation unit and a build unit, wherein the build unit comprises a raw material supply unit, a raw material container containing a raw material, wherein the raw material comprises a raw material surface forming a first layer which can be exposed to a laser beam emitted by the laser generation unit, wherein a heating device for heating the raw material surface is arranged between the laser generation unit and the build unit, wherein the heating device includes a heating surface for heating the surface of the raw material in the raw material container, wherein the raw material is pre-heated by the thermal energy generated by the heating surface to from a pre-heated raw material surface, wherein a laser beam is generated by the laser generation unit, wherein a directing unit directs the laser beam emitted by the laser generation unit onto the pre-heated raw material surface, wherein the laser beam passes through the heating surface to solidify the pre-heated raw material surface to obtain a first solid layer portion of the solid article, wherein at least one additional layer of the raw material is supplied from the raw material supply unit and deposited on top of the first layer, wherein the at least one additional layer is pre-heated by the thermal energy generated by the heating surface to from an additional pre-heated raw material surface, wherein the laser beam passes through the heating surface to solidify the at least one additional pre-heated raw material surface to obtain an additional solid layer portion of the solid article such that the solid article is obtained from a plurality of solid layer portions.