The heater null for float glass manufacture which is used for the production manner of float glass and the production manner of the said float

摘要

PROBLEM TO BE SOLVED: To offer a heater for a float glass manufacture which consists of a high strength silicon carbide heating element and the silicon carbide heating element for a heater for heating in float glass manufacture, and has a dense and more excellent corrosion resistance characteristic and a specific resistance suitable for the heating element, and the manufacture method for the float glass which uses this heater.;SOLUTION: The silicon carbide heating element consisting of the silicon carbide sintered object having a compositional characteristic that a specific resistance at 1000C. is 0.020-0.15 .cm, and the apparent porosity is 15% or less and the bulk specific gravity is 2.7 or more, and it is desirable to contain nitrogen and to be manufactured by reaction sintering. The silicon carbide heating element is used as a heater for at least a hot region to a forming region to a forming region in the float bath for sheet glass manufacture.;COPYRIGHT: (C)2001,JPO