Additive manufacturing power map to mitigate overhang structure

US11433480B2 · kind B2 · utility

Assignee

• Lawrence Livermore National Security, LLC · US

Inventors

• Saad A. Khairallah · Livermore, US
• Gabe Guss · Manteca, US
• Wayne E. King · San Ramon, US
• Manyalibo Joseph Matthews · Livermore, US

Key dates

• Filing date: Oct 5, 2018
• Grant date: Sep 6, 2022
• Expiry date: Oct 25, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22F12/55
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A laser powder bed fusion additive manufacturing system for producing a part by creating a power map that is an intelligent feed forward model to control the laser powder bed fusion additive manufacturing for producing the part and using the power map to control the laser powder bed fusion additive manufacturing for producing the part. This includes an apparatus for producing a part including a powder bed, a laser that produces a laser beam, a proportional integral derivative controller that creates a power map that describes laser power requirements as the laser moves along a path, wherein the laser power requirements prevent defects in the part.