DIRECTLY FIRING TYPE CONTINUOUS HEATING FURNACE FOR STEEL SHEET

• Main Authors: KAMETANI TAKEFUMI, NAKAJIMA KATSUJI
• Format: Patent
• Language: English
• Published: 30.07.2009
• Subjects: BLASTING; CHEMISTRY; FURNACES; FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; HEATING; KILNS; LIGHTING; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MECHANICAL ENGINEERING; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; OPEN SINTERING OR LIKE APPARATUS; OVENS; RETORTS; WEAPONS

PROBLEM TO BE SOLVED: To provide a directly firing type continuous heating furnace for steel sheet by which the temperature of the steel sheet is kept almost uniform in the width direction and the steel sheet having little unevenness in the characteristics can stably be produced, and in the case that the performance for almost uniforming the temperature of the steel sheet in the width direction has deteriorated, this defect can be repaired in a short time. SOLUTION: The directly firing type continuous heating furnace is provided with: inner walls 4 constituted with a refractory, such as refractory brick; hearth-rolls 2 for conveying the steel sheet 1 while keeping it in a horizontal position; and a plurality of burners 3 for heating the steel sheet. Then, on the furnace hearth part 4a in the inner walls, a spherical heat-storage member 5 covering the surface with high radiating material, is laid. It is desirable that the heat-storage member is disposed at the position facing the center part in the width direction of the steel sheet. COPYRIGHT: (C)2009,JPO&INPIT