Thermal control system for laser-based three-dimensional powder fusion manufacturing
AssigneeInternational Business Machines Corporation
InventorsBinoy Thomas, Sarbajit Kumar Rakshit, Sudheesh S. Kairali
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Abstract
A method for thermal control of laser-based three dimensional (3D) powder fusion manufacturing is provided. The method includes directing a laser beam into a powder bed for fabricating a 3D object by powder bed fusion, analyzing historical data and powder specifications relating to the 3D object and powder in the powder bed and dynamically adjusting temperatures of powder surrounding the 3D object in the powder bed in accordance with results of the analyzing to prevent microcrack formation in the 3D object.
Claims20
A method for thermal control of laser-based three dimensional (3D) powder fusion manufacturing, the method comprising:
- directing a laser beam into a powder bed for fabricating a 3D object by powder bed fusion;
- analyzing historical data and powder specifications relating to the 3D object and powder in the powder bed;
- and
- dynamically adjusting temperatures of powder surrounding the 3D object in the powder bed in accordance with results of the analyzing to prevent microcrack formation in the 3D object.
A system for thermal control of laser-based three dimensional (3D) powder fusion manufacturing, the system comprising:
- an enclosure defining a powder bed;
- an optical system to emit a laser beam toward the powder bed;
- a secondary heating system;
- and
- a controller configured to control the optical system to direct the laser beam into the powder bed for fabricating a 3D object by powder bed fusion, to analyze historical data and powder specifications relating to the 3D object and the powder in the powder bed and to control the secondary heating system to dynamically adjust temperatures of powder surrounding the 3D object in the powder bed in accordance with analysis results to prevent microcrack formation in the 3D object.
A system for thermal control of laser-based three dimensional (3D) powder fusion manufacturing, the system comprising:
- an enclosure defining a powder bed;
- an optical system to emit a laser beam toward the powder bed;
- a secondary optical system to emit a secondary laser beam toward the powder bed;
- and
- a controller configured to control the optical system to direct the laser beam into the powder bed for fabricating a 3D object by powder bed fusion, to analyze historical data and powder specifications relating to the 3D object and the powder in the powder bed and to control the secondary optical system to direct the secondary laser beam into the powder bed to dynamically adjust temperatures of powder surrounding the 3D object in the powder bed in accordance with analysis results to prevent microcrack formation in the 3D object.
Dependencies are inferred from the claim text.