Continuous steel heating furnace featuring free setting of...

C - Chemistry – Metallurgy – 21 – D

Patent

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C21D 1/52 (2006.01) F27B 9/02 (2006.01) F27B 9/30 (2006.01) F27B 9/36 (2006.01) F27B 9/40 (2006.01)

Patent

CA 2081385

The present invention relates to a steel heating furnace which permits free setting of the in-furnace temperature pattern or gradient as desired. A steel heating furnace includes at least one or more burner systems for regenerative heating, each being arranged to supply combustion air and exhaust combustion gases through a regenerative bed. The burner systems are disposed in each of a plurality of zones which are defined within a single furnace body, or in each of the unit furnaces. The unit furnaces are interconnected to form a single furnace body. The amount of combustion may be controlled for each zones or each unit furnaces to enable freevariation of in-furnace temperature per zone or per unit furnace so that a desired in-furnace temperature pattern gradient in the entire furnace may be set easily. The steel heating furnace may be constructed with the required length and in-furnacetemperature pattern, by interconnecting the unit furnaces.

La présente invention a trait à un four à réchauffer l'acier permettant de régler librement la courbe ou le gradient de température du four. Le four comporte au moins un systèmede brûleurs pour fournir la chaleur régénérative, chaque système étant conçu pour fournir de l'air comburant et des gaz d'échappement par l'intermédiaire d'un lit régénératif. Les brûleurs sont situés dans chacune des zones définies d'un seul corps de four ou dans chacune des unités de four. Les unités de four sont interreliées pour former un seul corps. La combustion peut être contrôlée pour chaque zone ou pour chaque unité de four pour permettre des variations de température dans le four pour chaque zone ou pour chaque unité de four, de sorte que la courbe ou le gradient de température du four peut être réglé facilement. Le four à réchauffer l'acier peut être construit selon la longueur et la courbe de température souhaitées en interreliant les unités de four.

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