Heat treatment apparatus with a fluidized-bed furnace
AssigneeKabushiki Kaisha Komatsu Seisakusho
InventorsHisashi Hattori, Hidemitsu Takenoshita, Yoichiro Hanada, Tohru Fukuda
Life of this patent
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Abstract
A heat treatment apparatus for metals or metal articles has a fluidized-bed furnace for heating the metals and a cooling chamber disposed above the furnace so as to communicate with a heating chamber of the furnace through a partition capable of being opened and closed, so that the metals can be cooled immediately after heated. The apparatus further includes a circulating circuit arrangement with a heat-resisting fan for circulating together or separately heated furnace gas and cooling fluid. Flow rate of the circulating furnace gas and/or cooling fluid is controlled by a flow rate control device provided in the circulating circuit.
Claims7
A heat treatment apparatus for metals, comprising a fluidized-bed furnace for heating use in which a fluidized bed comprised of refracting particles is accomodated therein;
- a cooling chamber disposed above said fluidized-bed furnace through a partition capable of being opened and closed freely and which is arranged to cool immediately the articles which have been subjected to heat treatment in said fluidized-bed furnace;
- a circulating circuit means provided with a heat-resisting fan for circulating together the heated furnace gas in the fluidized-bed furnace and the cooling fluid in the cooling chamber;
- a heat-treating gas supply means connected to said circulating circuit means upstream of the heat-resisting fan so as to supply selectively a predetermined heat-treating gas into the fluidized-bed furnace;
- and, a flow rate controller arrangement connected to said circulating circuit means in the vicinity of said heat-resisting fan so as to control the flow rate of the circulating furnace gas and cooling fluid and that of the heat-treating gas to be supplied.
Dependencies are inferred from the claim text.