Method to equalize the temperature in a heating furnace with a c

Details Method to equalize the temperature in a heating furnace with a c Method to equalize the temperature in a heating furnace with a c

1996-09-12

1998-01-13

Hoang, Tu B.

Industrial electric heating furnaces

Resistance furnace device

With internal atmosphere control

373 18, 295277, 72201, F27D 706, H05B 300

Patent

active

057086788

ABSTRACT:
Method to equalize the temperature in a heating furnace (10) with a controlled-oxidization ambient, the furnace (10) comprising at least one insulated chamber (11) cooperating with a supporting and conveying surface defined by a plurality of rollers (12), the rollers (12) including rings (35) to bear slabs (19), a plurality of burners (18) being comprised in cooperation with the upper part of the furnace (10), whereas a plurality of aspiration intakes (21) is included in cooperation with the lower part of the furnace (10), the feed to the burners (18) being adjusted in such a way as to ensure a strongly oxidizing atmosphere within the furnace (10) so as to obtain a desired and controllable layer of scale on the surface of a slab (19) in the furnace (10), this strongly oxidizing atmosphere being conveyed so as to surround and lap continuously and evenly the whole periphery of the slab (19), the furnace (10) cooperating downstream with a descaling assembly (22) to remove the layer of scale thus formed.
Heating furnace (10) with a controlled-oxidisation ambient, which comprises at least one insulated chamber (11) cooperating with a supporting and conveying surface defined by a plurality of rollers (12), the rollers (12) including rings (35) to support slabs (19), a plurality of burners (18) being included in cooperation with the upper part of the inside of the furnace (10), whereas a plurality of aspiration intakes (21) cooperates with the lower part of the inside of the furnace (10), the furnace (10) comprising a plurality of diversion baffles (20) to convey and direct fumes and gases, the baffles (20) being positioned in cooperation with the burners (18) and extending vertically to a position close to the upper surface of the slab (19), the burners (18) being fed in such a manner as to create a strongly oxidizing atmosphere within the furnace (10).

REFERENCES:
patent: 4261552 (1981-04-01), Kameyama et al.
patent: 4338077 (1982-07-01), Shibayama et al.
patent: 4629417 (1986-12-01), Patalon
patent: 4898628 (1990-02-01), Block et al.
patent: 5235840 (1993-08-01), Blazevic
patent: 5479808 (1996-01-01), Bricmont
patent: 5490315 (1996-02-01), Kostopolos et al.
patent: 5528816 (1996-06-01), Donini et al.
Database WPI Derwnt Publications Ltd., AN84079250 XP002001801 & JP-A-820-141 368 (Dumitomo Metal) 13 Aug. 1981 abstract.
Patent Abstracts of Japan, vol. 008, No. 106 (C-223), 18 May 84 & JP-A-59 020453 (Kawasaki Seitetsu KK), 2 Feb. 1984 abstract.

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