Development of High Performance Mid-Temperature Burnt Al2O3-ZrO2-C Slide Gates

Wei Li; Hou Xing Zhang; Ze Ming Tong; Yan Ming Li

doi:10.4028/www.scientific.net/AMR.510.689

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 510Development of High Performance Mid-Temperature...

Development of High Performance Mid-Temperature Burnt Al₂O₃-ZrO₂-C Slide Gates

Abstract:

Slide gates are installed at the bottom of a ladle or tundish to control the flow of molten steel. It plays an important role in ladle refining process and continuous casting. Al₂O₃-ZrO₂-C refractories are widely used as slide gate materials due to its excellent corrosion and thermal shock resistance. At the start of casting, molten steel almost 1600°C passes through the bore of slide gate, the plate is rapidly heated up, the temperature difference between the bore and edge part, the slide gates are subject to large thermal gradients, so there is large thermal stress in the plate. This paper will show the results of our improved slide gates with good thermal shock resistance.