Fracture Characteristic of Isostatic Pressed Submerged Entry Nozzle

Alicia Mašlejová; Andrej Leško

doi:10.4028/www.scientific.net/KEM.290.370

Paper Titles

Mechanical Properties of Alumina/Zirconia Functionally Graded Material Prepared by Electrophoretic Deposition
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Mechanical Properties of Thermal Barrier Coatings at Room Temperature
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Effect of Oxidation at Elevated Temperature on Elastic and Interface Properties of Ceramic Matrix Composites
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Mechanical and Fracture Properties of R-Glass Reinforced Composites with Pyrolysed Polysiloxane Resin as a Matrix
p.344

The Preparation and Properties of Functionally Graded Alumina/Zirconia-Toughened Alumina (ZTA) Ceramics for Biomedical Applications
p.348

PZT Ceramics Prepared from Two Phase Gels
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Strength and Fractography of High Power Varistors
p.358

Delayed Fatigue of Hydroxy- and Fluorhydroxyapatite Ceramics in Simulated Body Fluid
p.366

Fracture Characteristic of Isostatic Pressed Submerged Entry Nozzle
p.370

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Fracture Characteristic of Isostatic Pressed Submerged Entry Nozzle

Abstract:

Submerged Entry Nozzle (SEN) are usually made from a combination of carbon bonded alumina, zirconia and magnesia with graphite, which have been found to give the best response to the extreme demands of thermal shock, corrosion and erosion resistance. SEN brittle fracturing and clogging is a serious productivity and quality problem in continuous casting. The SEN critical area of failure is the steel flange where the SEN neck is fixed. Thermal shock or mechanical stress may cause cracking, which can result in premature failure. Preheating on optimal temperature before SEN installation is the standard procedure. Thermal stress effect on fracture behavior was done by analyze of material fractography, morphology, macrostructure and microstructure.