Morozkin N.D., Tkachev V.I., Chudinov V.V.
INFLUENCE OF THERMAL EXPANSION COEFFICIENT ON THERMAL STRESSES IN THE CERAMIC PLUG ^{[№ 9 ' 2014]}
In this paper the problem of destruction of ceramic plug during locking steel casting is considered. The destruction is associated with a sharp heating of a plug when filling the industrial ladle with molten steel, and with the uneven heating of the plug parts. The algorithm for calculating the thermal stress in a three-dimensional field by the finite element method has been elaborated. For the initial data the search method of interval coefficient of thermal expansion, which does not involve the destruction of the product is proposed. This analysis allows us to modify the technology of manufacturing of ceramic plugs for different operating conditions.