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Title: Spatter reduction laser scanning strategy in selective laser melting

Abstract

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.

Inventors:
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1600186
Patent Number(s):
10,449,632
Application Number:
16/252,002
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 01/18/2019
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Khairallah, Saad. Spatter reduction laser scanning strategy in selective laser melting. United States: N. p., 2019. Web.
Khairallah, Saad. Spatter reduction laser scanning strategy in selective laser melting. United States.
Khairallah, Saad. Tue . "Spatter reduction laser scanning strategy in selective laser melting". United States. https://www.osti.gov/servlets/purl/1600186.
@article{osti_1600186,
title = {Spatter reduction laser scanning strategy in selective laser melting},
author = {Khairallah, Saad},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {10}
}

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Works referenced in this record:

Multiple material systems for selective beam sintering
patent, July 1990


Method for selective laser sintering with layerwise cross-scanning
patent, October 1992