A kind of method that rotary hearth furnace prepares titanium nitrogen alloy
A titanium-nitrogen alloy and rotary hearth furnace technology, which is applied in the field of preparing titanium-nitrogen alloys in rotary hearth furnaces, can solve the problems of complex pelletizing stage of raw materials, high nitrogen content of titanium-nitrogen alloys, long process time, etc., and achieves short preparation time, high heat The effect of less loss, increased hardness and strength, and wear resistance
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Embodiment 1
[0037] TiO 2 10kg and 3.75kg of coke were crushed into a powder with a particle size of 160 mesh, stirred evenly, and a polyvinyl alcohol aqueous solution with a mass concentration of 0.5% was used as a binder, and pressed for 8 seconds under a pressure of 10MPa to form a ball to obtain a 200 mesh spherical raw material;
[0038]Put the spherical raw material into the rotary hearth furnace, set the rotation speed of the rotary hearth furnace to 50min / r, enter the low temperature preheating zone of the rotary hearth furnace for low temperature preheating reaction, the temperature of the low temperature preheating zone is 550°C, and the holding time is 10min; then Enter the high-temperature reduction zone for high-temperature reduction-nitridation reaction. The temperature of the high-temperature reduction zone is 1850°C, the holding time is 30 minutes, and the flow rate of nitrogen gas is 1800mL / min; finally enter the cooling zone, and cool down to room temperature (25°C) with t...
Embodiment 2
[0041] TiO 2 10kg and 3.75kg of coke were crushed into a particle size of 200 mesh powder, stirred evenly, with a mass concentration of 0.5% polyvinyl alcohol aqueous solution as a binder, pressed for 8 seconds under a pressure of 10MPa to form a ball, to obtain a 200 mesh spherical raw material;
[0042] Put the spherical raw material into the rotary hearth furnace, set the rotation speed of the rotary hearth furnace to 50min / r, enter the low temperature preheating zone of the rotary hearth furnace for low temperature preheating reaction, the temperature of the low temperature preheating zone is 550°C, and the holding time is 10min Then enter the high-temperature reduction zone for high-temperature reduction-nitridation reaction, the temperature of the high-temperature reduction zone is 1850 ° C, the holding time is 30 minutes, and the feed rate of nitrogen is 2100 mL / min; finally enter the cooling zone, and cool to room temperature with the furnace for 10 minutes ( 25°C) to ...
Embodiment 3
[0045] TiO 2 10kg and 3.75kg of coke were crushed into a particle size of 200 mesh powder, stirred evenly, with a mass concentration of 0.5% polyvinyl alcohol aqueous solution as a binder, pressed for 8 seconds under a pressure of 10MPa to form a ball, to obtain a 200 mesh spherical raw material;
[0046] Put the spherical raw material into the rotary hearth furnace, set the rotation speed of the rotary hearth furnace to 50min / r, enter the low temperature preheating zone of the rotary hearth furnace for low temperature preheating reaction, the temperature of the low temperature preheating zone is 550°C, and the holding time is 10min Then enter the high-temperature reduction zone for high-temperature reduction-nitridation reaction, the temperature of the high-temperature reduction zone is 1900 ° C, the holding time is 30 minutes, and the feed rate of nitrogen gas is 2300 mL / min; finally enter the cooling zone, and cool to room temperature with the furnace for 10 minutes ( 25°C)...
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