CEILING UNIT FOR HEATING FURNACE MANUFACTURING METHOD OF CEILING UNIT FOR HEATING FURNACE HEATING FURNACE AND MANUFACTURING METHOD OF HEATING FURNACE

摘要

Provided is a ceiling unit for a heating furnace which has high rigidity and durability without causing a rise in manufacturing cost and a complicated manufacturing process even when the heating furnace is enlarged. A heat insulating material layer laminated on the inner wall layer; a top plate laminated and arranged on the heat insulating material layer; a heat insulating material layer having one end fixed to the top plate and the other end fixed to the heat insulating material Wherein each of the inorganic fiber-reinforced blocks is formed of an inorganic fiber-reinforced plastic material, and each of the inorganic fiber-reinforced plastic blocks is made of an inorganic fiber- And at least one shim member is provided.