Cooling jacket to the slow cooling of the annealing material

摘要

Cooling jacket (200) for a batch annealing furnace (100) for cooling of previously with a heating hood (110) heated annealing material (102), the heating and for cooling within a protective hood (104) of the hood furnace (100) is arranged, in which the cooling jacket (200) has a cooling hood body (202) for placement over the protective hood (104), the at least partially of a thermal insulation material (204) is formed, a cooling gas supply opening (206) in said cooling hood body (202) for supplying cooling gas in an intermediate space between the protective hood (104) and cooling hood body (202) for the thermal interaction of the cooling gas with the annealing material (102) by means of the protective hood (104), a cooling gas outlet opening (208) in the cooling hood body (202) for the removal of the supplied cooling gas according to the thermal interaction, a closing device (210) for selectively closing the cooling gas outlet opening (208) is formed, and a ventilating device (212) for venting of the cooling gas between the cooling gas supply opening (206) and the cooling gas outlet opening (208).