Thermal stress analysis of fused-cast AZS refractories during production; Part 1: Industrial study
- Univ. of British Columbia, Vancouver, British Columbia (Canada). Centre for Metallurgical Process Engineering
- Carborundum Co., Falconer, NY (United States). Monofrax-S Plant
A study has been conducted to understand and prevent the formation of cracks in alumina-zirconia-silica (AZS) refractory blocks during solidification processing. A fundamental approach has been taken, centered on the development of a three-dimensional mathematical model to predict heat flow and stress generation in fused-cast AZS refractory blocks. In the first part of a two-part study, the voidless'' casting process has been carefully examined in an industrial setting. From a survey of the distribution, frequency of occurrence, and fracture surface morphology of cracks, an attempt was made to link the crack types found in the study to process variables. In-mold temperature data collected for a single casting throughout the normal cooling period have been used to validate the heat-flow model which is described in Part 2. The stress analysis, cause of the different cracks, and remedial action are also presented in Part 2.
- OSTI ID:
- 7167273
- Journal Information:
- Journal of the American Ceramic Society; (United States), Vol. 77:6; ISSN 0002-7820
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALUMINIUM OXIDES
CASTING
CRACK PROPAGATION
SILICON OXIDES
ZIRCONIUM OXIDES
CERAMICS
SOLIDIFICATION
THERMAL STRESSES
ALUMINIUM COMPOUNDS
CHALCOGENIDES
FABRICATION
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
SILICON COMPOUNDS
STRESSES
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
360203* - Ceramics
Cermets
& Refractories- Mechanical Properties
360201 - Ceramics
Cermets
& Refractories- Preparation & Fabrication