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Giuseppe Guasto

Riccardo Tonelli

A refractory plate member ( ) for the side containment in continuous casting machines of the type with two counterrotating rollers ( ), including two or more overlapped ceramic and/or refractory layers is provided, the plate member ( ) is characterized in that the first layer ( ) of said plate member ( ) is made of a material that is easily wearable under the action of said rolls ( ) during the starting step, and in that the second layer ( ) underlying the first layer is made of a ceramic and/or refractory and/or carbon material having a very high wear and thermal shock resistance and self-lubricating properties.

Refractory plates for continuous casting machines of thin flat products

The present invention provides an improvement to the plates for the side containing in apparatuses for the continuous casting of thin flat products, said plates comprising: at least one insert ( ) of a ceramic material; a plurality of joints ( ) for the thermal expansion, the joints being constituted of a ceramic fibers material; a first casting ( ) of a silica-alumina material containing ceramic fibers; a second casting ( ) of a silica-alumina material having a high content of ZrO ; and a third casting ( ) of a SiC-based thixotropic material; the arrangement being such that said at least a ceramic insert is arranged on said third casting ( ) of a thixotropic material so that it assumes a substantially triangular shape, said first silica-alumina casting ( ) based on a ceramic fibers material is arranged on said third casting ( ) at the exterior area with respect to said at least a ceramic insert, said second casting ( ) of silica-alumina material having a high contents of ZrO is arranged on said third casting ( ) of a thixotropic material substantially at the central portion of the plate defined by said at least a ceramic insert ( ), and said plurality of joints ( ) in ceramic fibers for the thermal expansion is arranged at the contacting surfaces between said at least a ceramic insert ( ) and at least one of said first ( ), second ( ) and third casting ( ).

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Rome, Italy

Giuseppe Guasto