Patent ID: 11925981
Assignee: ARCAM AB
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  Y | IPC B

Claim 9:
10. An additive manufacturing system, the additive manufacturing system comprising:
a build chamber comprising a powder distributor and a build platform, the build platform configured to support a powder layer, the powder distributor movable over the build platform to distribute the powder layer;
an energy beam source; and
an electronic control unit including a processing device configured to:
distribute the powder layer in the build chamber with the powder distributor;
determine a set temperature of the powder layer;
selectively sinter the powder layer with the energy beam source to form a plurality of sintered areas and a plurality of non-sintered areas based on a thermal model, the thermal model being used to predict a future heat conductivity of the powder layer based on a design of a three-dimensional article and a power of the energy beam used to melt a subset of the plurality of sintered areas; and
melt the subset of the plurality of sintered areas with the energy beam source,
determine, after melting, a remaining temperature imbalance between a temperature of the subset of the plurality of sintered areas and the determined set temperature of the powder layer, wherein the determined set temperature is greater than the temperature of the subset of the plurality of sintered areas; and
heat the powder layer after melting the subset of the plurality of sintered areas and before distributing a second powder layer to reduce the remaining temperature imbalance and achieve the future heat conductivity.