| 摘要 |
PURPOSE: A stainless strip continuous annealing apparatus is provided to improve flatness of strip by separating heating means from cooling means and controlling tension of stainless strip in heating zone and improve heat efficiency, productivity and strip surface brightness by using pure hydrogen as an atmosphere gas in the furnace. CONSTITUTION: The stainless strip continuous annealing apparatus enabling tension levelling comprises a reverse "U" character shaped annealing furnace(21) which is consisted of input side vertical part(21A), output side vertical part(21C) and horizontal part(21B) for connecting upper parts of the two vertical parts, and in which a reverse "U" character shaped strip proceeding path is formed, and non-driving direction change rollers(R2,R3,R1,R4) are respectively installed above and underneath respective inner parts of the two vertical parts; uncoiler(22) and recoiler(23) respectively installed at both sides of the annealing furnace centering around a lower part of the annealing furnace; bridle rolls(24) installed between the direction change roller(R1) underneath the input side vertical part and the uncoiler; heating means(26) installed on the inner wall surface of the input side vertical part of the annealing furnace; cooling means(27) installed on the inner wall surface of the output side vertical part of the annealing furnace, and in which cooling water jacket for circulating cooling water supplied from the outside is installed; a control unit(28) for adjusting temperature of the heating means and quantity of cooling water circulated to the cooling means and controlling proceeding speed of strip(S) and tension applied to the strip; and a hydrogen gas supply means(29) for forming an atmosphere in the annealing furnace.
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