Patent ID: 6458733
Filing Date: 2002-10-01
Classification: F27D

Abstract:
A method for preparing a metal reinforced refractory body resistant to cracking at elevated temperatures comprising the steps of:(a) providing a mold for containing a slurry of refractory material; (b) inserting a body of metal fibers into said mold, said metal fibers having a coefficient of thermal expansion of less than 10Ã—10âˆ’6 in/in/Â° F. in the temperature range of 400Â° to 2000Â° F. and having a yield strength of greater than 35 KS at 1200Â° F.; (c) introducing said slurry of refractory material to said mold to provide said slurry in intimate contact with said metal fibers, said refractory material in the hardened condition having a coefficient of thermal expansion of less than 5Ã—10âˆ’6 in/in/Â° F.; (d) hardening said refractory material to provide a metal reinforced composite refractory body comprised of a reinforcing component and a refractory component having a coefficient of thermal expansion of less than 5Ã—10âˆ’6 in/in/Â° F. to minimize cracking of the refractory body.