PROTECTOR FOR MELTING MINERAL IMMERSION TYPE TOOL

摘要

PURPOSE:To provide a protector free from the attachment of raw metal, by arranging a ceramic paper layer which is wound on the circumference of a paper tube with the thickness of the layer under 2mm to withstand frequency of molten metal immersions. CONSTITUTION:A ceramic paper 0.1-1mm thick is wound on the circumference of an organic paper tube 7 with the thickness of several millimeter formed by winding strips such as Kraft paper in a tube through an adhesive to provide a ceramic paper with the thickness of up to 2mm. The ceramic paper comprises 50wt% or more of inorganic fiber, 15wt% or less of organic binding component and 35wt% or less of hydration swelling mineral except for asbesto and dispersed thoroughy to make a slurry as material which is worked with a paper maker. This protector is equipped with a thermocouple unit in which a thermocouple is mounted into a housing 3 having a flange 2.