Spatter reduction laser scanning strategy in selective laser melting

Patent · Tue Mar 05 00:00:00 EST 2019

OSTI ID:1525032

Khairallah, Saad

An additive manufacturing system wherein a gentle sintering run on heat-fusible particles is followed closely by a selective laser melting run. The laser sintering run slightly sinters the particles and causes the particles to adhere to each other, but not necessarily deform and lose their original shape. The particles become connected via bridges between each other, which holds them in place. During the laser melting run, the powder melts in place, with minimum particle ejection or mobility, since the particles form a network of connected particles.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-07NA27344
• Assignee: Lawrence Livermore National Security, LLC (Livermore, CA)
• Patent Number(s): 10,220,471
• Application Number: 14/882,762
• OSTI ID: 1525032
• Resource Relation: Patent File Date: 2015-10-14
• Country of Publication: United States
• Language: English