English to Italian Law/Patents Engineering (general) rotary hearth furnace

The rotary hearth furnace has a lower part heat insulation structure that is composed of an annular hearth frame, a heat insulation material layer which is arranged on the hearth frame, and a refractory layer which is arranged on the heat insulation mate-rial layer. To an outer circumference side and an in-ner circumference side of the rotary hearth, an outer circumference side corner refractory and an inner circumference side corner refractory are arranged through hearth curb castings respectively.

by external force due to thermal expansion which acts on the corner refractories, force in a lateral direc-tion acts on the corner refractory hearth curb ca-stings which supports the corner refractories. Accor-dingly, it is necessary to use expensive alloy, for example, alloy corresponding to ASTM HH, for the cor-ner refractory hearth curb castings.

The outer end part of the outer circumference side hearth curb casting is the most outer circumference side part of the hearth curb casting and the inner end part of the inner circumference side hearth curb casting is the most inner circumference side part of the hearth curb casting.