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US 7,025,927 B2Granted
Hot air blowing type fluidized-bed furnace, rotary heat-treatment furnace, heat-treatment apparatus, and method of heat treatment
AssigneeAsahi Tec Corporation
InventorTakayuki Sakai
Life of this patent
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Abstract
A heat-treatment apparatus including a first furnace for heat treatment and solution treatment of a work piece, and a second furnace for heat treatment and aging treatment of a work piece, wherein each furnace includes a dispersion tube cantilevered and immersed within a fluidized bed, the tube for blowing hot air into the fluidized bed. The first furnace includes a heat exchanger for recovering waste heat from gases discharged the first furnace for use as a heat source for the second furnace.
Claims18
A heat-treatment apparatus comprising:
- a vessel for forming therein a fluidized bed composed of fluidized material formed from heated particles;
- a cantilevered dispersion tube located in such fluidized bed when formed and having air outlets for blowing hot air therefrom;
- and
- means for rotating a metallic work piece during heat-treatment thereof, said means for rotating a metallic work piece being located above said dispersion tube, wherein
- said dispersion tube and said means for rotating a metallic work piece are located within such fluidized bed formed from particles in said vessel fluidized by hot air blown from said dispersion tube.
2 more elements
A method for heat-treatment of a metallic work piece, comprising:
- providing a vessel for forming a fluidized bed therein;
- blowing hot air from a dispersion tube to fluidize particles to form a fluidized bed in said vessel;
- providing means for rotating a metallic work piece during heat-treatment of such work piece, said means for rotating a metallic work piece being located above said dispersion tube, wherein said dispersion tube and said means for rotating a metallic work piece are located within such fluidized bed.
Dependencies are inferred from the claim text.