Single Crystal Casting with Fluidized Carbon Bed Cooling: A Process Innovation for Quality Improvement and Cost Reduction

Journal article
(Original article)


Publication Details

Author(s): Hofmeister M, Franke M, Körner C, Singer R
Journal: Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science
Publisher: Springer Boston
Publication year: 2017
Volume: 48
Journal issue: 6
Pages range: 3132-3142
ISSN: 1073-5615
Language: English


Abstract


Superalloy gas turbine blades are being produced by investment casting and directional solidification. A new process, Fluidized Carbon Bed Cooling (FCBC), has been developed and is now being optimized in a prototype casting unit with 10 kg pouring weight. In early test runs with still rather simple mold cluster geometries, a reduction of the primary dendrite arm spacing of around 40 pct compared to the standard radiation cooling process (HRS) could be demonstrated. The improvement is mainly attributed to higher temperature gradients driving solidification, made possible by a functioning Dynamic Baffle. Compared to earlier development efforts in the literature, contamination of the melt and damage to the equipment are avoided using carbon-based fluidized bed materials and the so-called “counter pressure concept.”


FAU Authors / FAU Editors

Franke, Martin
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Hofmeister, Matthias
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Körner, Carolin Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Singer, Robert Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)


Research Fields

High Temperature Materials
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)


How to cite

APA:
Hofmeister, M., Franke, M., Körner, C., & Singer, R. (2017). Single Crystal Casting with Fluidized Carbon Bed Cooling: A Process Innovation for Quality Improvement and Cost Reduction. Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science, 48(6), 3132-3142. https://dx.doi.org/10.1007/s11663-017-1110-x

MLA:
Hofmeister, Matthias, et al. "Single Crystal Casting with Fluidized Carbon Bed Cooling: A Process Innovation for Quality Improvement and Cost Reduction." Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science 48.6 (2017): 3132-3142.

BibTeX: 

Last updated on 2018-03-10 at 14:50