MITIGATING DOWN SKIN EFFECTS IN ADDITIVE MANUFACTURING

MITIGATING DOWN SKIN EFFECTS IN ADDITIVE MANUFACTURING

A process for forming an overhang feature without downward facing surface defects in the overhang feature on a part; the process includes laying down a first layer with a first powder material on a build plate; fusing the first powder material with a first power laser beam; laying down a second laye...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Thayer, Henry H, Binek, Lawrence A
Format: Patent
Sprache:eng
Schlagworte:
CASTING
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:A process for forming an overhang feature without downward facing surface defects in the overhang feature on a part; the process includes laying down a first layer with a first powder material on a build plate; fusing the first powder material with a first power laser beam; laying down a second layer on top of the first layer, the second layer comprising a second powder material having an additive which lowers the melting point temperature of the second powder material; forming an overhang feature from the second layer; and fusing the second powder material with a second power laser beam in the absence of forming the downward facing surface defects in the overhang feature of the part.