Patent ID: 7588719
Filing Date: 2009-09-15
Classification: C21D,F27B,F27D

Abstract:
1. An installation for the heat-treatment of parts comprising: a rotary hearth furnace adapted to be rotated in a timed manner and comprising outer and inner walls for limiting a furnace chamber, said furnace chamber having vertically movable doors adapted to divide up said furnace chamber into a heating zone and at least one treatment zone; a first opening provided in said outer wall for charging said heating zone, first means for closing said first opening, a charging sluice disposed exterior to said furnace chamber and located adjacent said first opening; a second opening provided in said outer wall for discharging from a downstream treatment zone, second means for closing said second opening, said installation further comprising: transport means for transporting said parts into and out of the hearth furnace, quenching bath means for quenching said parts after treatment in said rotary hearth furnace; and, sluice means arranged to connect said second opening and said quenching bath means, wherein said sluice means and said charging sluice have at least one sluice door, each sluice door being disposed at about a right angle to the associated opening in said outer wall.