Heating – Work chamber having heating means – Having means by which work is progressed or moved mechanically
Patent
1984-08-07
1986-04-15
Camby, John J.
Heating
Work chamber having heating means
Having means by which work is progressed or moved mechanically
432128, 432239, F27B 914, F27B 902, F27D 300
Patent
active
045824827
ABSTRACT:
A top-fired, lifting or walking, hearth-type furnace includes an upstream preheating zone and a downstream primary heating zone. Stock, such as billets or ingots, to be heated is passed sequentially through the preheating zone and primary heating zone. Each zone has therein support members for supporting the stock. The support members of the preheating zone are at a level higher than the support members of the primary heating zone, with a step therebetween, whereby hot flue gases in the preheating zone circulate upwardly around the support members therein and the stock supported thereby. A lowering and lifting apparatus is located at the step to transfer stock from the support members of the preheating zone to the support members of the primary heating zone.
REFERENCES:
patent: 1851913 (1932-03-01), Lauge
patent: 3373980 (1968-03-01), Borgkvist
patent: 3471134 (1969-10-01), Cone
patent: 4492565 (1985-01-01), Feroldi
Camby John J.
Didier Engineering GmbH
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