Plasma heated sintering furnace

Details Plasma heated sintering furnace Plasma heated sintering furnace

F - Mech Eng,Light,Heat,Weapons

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B

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F27B 3/08 (2006.01) C04B 35/565 (2006.01) C04B 35/64 (2006.01) C22B 1/00 (2006.01) H05B 7/00 (2006.01)

Patent

CA 1266378

PLASMA HEATED SINTERING FURNACE ABSTRACT OF THE INVENTION A furnace for the sintering of refractory or ceramic materials using plasma heated gases. The furnace comprises a sintering chamber with strategic positioning of the plasma torch inlets and exhaust outlet, and means for controlling the furnace temperature during sintering so that the article being sintered does not decompose. Means for controlling the furnace temperature during sintering include: 1) Tangential injection of a secondary colder gas stream into the hot primary plasma gas stream; 2) Utilization of a plasma torch or torches which can be temperature controlled to achieve stable and lower plasma gas temperatures; and 3) Introduction or a secondary cooler gas directly into the furnace sintering chamber.

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