Heat-insulated port liner arrangement and method of fabrication

摘要

A heat-insulated port liner arrangement for a device composed of a cast metal which is molded around the arrangement and includes a tubular port liner composed of a material including a ceramic, a first covering layer disposed on the outer surface of the liner and composed of a material including refractory fibers, and a second covering layer disposed on the outer surface of the first covering layer and composed of a material including a metal having a melting point not lower than the melting point of the cast metal.