Spheroidizing annealing furnace
A spheroidizing annealing furnace and furnace technology are applied in the field of improvement and invention of spheroidizing annealing furnaces to achieve the effects of low decarburization rate, sufficient protective atmosphere and high spheroidization rate
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[0010] figure 1 As shown, the spheroidizing annealing furnace of the present invention includes an outer furnace 2, an inner furnace 3, a furnace cover 1 and a centrifugal fan 4, the inner furnace 3 is arranged in the outer furnace 2, and the furnace cover 1 and the inner furnace 3 are facing each other. The bottom of the furnace cover is spherical arc, and the outer furnace 2 is equipped with an electric heating device 5. The centrifugal fan 4 is installed between the bottom of the inner furnace 3 and the bottom of the outer furnace 2. When the centrifugal fan is working, the inner furnace, A forced convection loop is formed between the gap between the inner furnace roof and the furnace cover, the gap between the inner furnace and the outer furnace wall, and the gap between the inner furnace and the outer furnace bottom. The annealing furnace is provided with nitrogen inlet 8, methanol inlet 9, and blast inlet 6 And the overpressure exhaust port 7, the methanol inlet 9 is co...
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