Gas-cooled single chamber heat treating furnace, and method for gas cooling in the furnace

摘要

A gas-cooled single-chamber type heat-treating furnace T in which cooling gas vents 9A and 9B opened and closed by doors 11A and 11B are provided on each of mutually opposed walls of an inner chamber 5 forming a processing room and cooling gas is circulated by opening the cooling gas vents 9A and 9B during gas cooling, wherein the cooling gas vents 9A and 9B of the inner chamber 5 are provided with lattice-shaped flow uniforming members 19 made of heat-resisting materials.