Ceiling unit for heating furnace, method for manufacturing ceiling unit for heating furnace, heating furnace and method for manufacturing heating furnace

摘要

PROBLEM TO BE SOLVED: To provide a ceiling unit for a heating furnace free from causing an increase in manufacturing cost and the complication of a manufacturing process even if the heating furnace is enlarged, and having high rigidity and durability.SOLUTION: A ceiling unit for a heating furnace includes: an inner wall layer formed by aligning a plurality of inorganic fiber blocks; a heat insulating material layer laminated on the inner wall layer; a top plate laminated on the heat insulating material layer; a suspension member with its one end fixed to the top plate and with the other end penetrating the heat insulating material layer and extending into the inorganic fiber block; and one or more core members provided in the respective inorganic fiber blocks, inserted to a direction crossing in the inorganic fiber blocks, and connected to an end of the suspension member inserted into the inorganic fiber block.