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1. (WO2017201120) REAL-TIME LASER CONTROL FOR POWDER BED FUSION

Pub. No.:    WO/2017/201120    International Application No.:    PCT/US2017/033019
Publication Date: Fri Nov 24 00:59:59 CET 2017 International Filing Date: Thu May 18 01:59:59 CEST 2017
IPC: B22F 3/00
B22F 3/105
B29C 67/00
Applicants: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
Inventors: FISH, Scott
PHILLIPS, Tim
MCELROY, Austin
Title: REAL-TIME LASER CONTROL FOR POWDER BED FUSION
Abstract:
Disclosed herein is a system and a method for controlling laser energy deposition in order to normalize post-sintering temperatures is presented. Sensors provide feedback for in-situ control of laser power to reduce the influence the pre-sintering thermal profile has on the post-sintering temperatures. By actively controlling the laser during its scanning, the post-sintering temperatures can be more accurately controlled, resulting in mechanical and geometric improvements in part quality.