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Improved quality zircon nozzles for continuous steelcasting
Authors:Yu. V. Materikin  N. M. Porin'sh  P. A. Stolyarov  L. L. Vanicheva  N. V. Petrin  V. A. Fomenko  V. K. Tkachev
Affiliation:(1) All-Union Institute of Refractories, USSR;(2) Dzerzhinskii Dinas Plant, Krasnoarmeisk
Abstract:Conclusions An incorrect drying schedule is the main source of internal cracks in zircon nozzles. Cracking can be prevented either by drying the nozzles by an extended schedule (8 days at 30°C, 2 days at 50°C, and 1 or 2 days at 110°C) or by using ACPB instead of s. s.l. and drying the nozzles by a shorter schedule.Translated from Ogneupory, No. 5, pp. 15–19, May, 1977.
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