Operation of the Cooler Cooling furnace refers to the operation process in which the hot blast stove is cooled from the production hot state to normal temperature, and is an important link in the production of the hot blast stove. Different refractory materials and different shutdown methods apply different cooling furnace methods.Sintered NdFeB Vacuum Heat Treatment Process When the blast furnace is in normal production, there is a cooling furnace when the inner masonry of the hot blast stove needs to be overhauled in the hot blast stove group.Influence of nickel and tin elements on vacuum brazing of titanium materials