HOT-ROLLED COIL MANUFACTURING METHOD

To provide a hot-rolled coil manufacturing method capable of preventing deformation of a hot-rolled coil drawn out from a mandril of a coiler in order to prevent rewinding or chipping of the hot-rolled coil.SOLUTION: This hot-rolled coil manufacturing method takes up a range equivalent to an inner p...

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Bibliographische Detailangaben
Hauptverfasser:	MORISHITA ATSUSHI, AKASHI TORU, ISHIDA KINYA, INOUE NAOKI, OKAMOTO TSUTOMU
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL TRANSPORTING
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Beschreibung
Zusammenfassung:	To provide a hot-rolled coil manufacturing method capable of preventing deformation of a hot-rolled coil drawn out from a mandril of a coiler in order to prevent rewinding or chipping of the hot-rolled coil.SOLUTION: This hot-rolled coil manufacturing method takes up a range equivalent to an inner part at a temperature of 450°C-650°C and a range equivalent to an outer peripheral part at a temperature of 50°C-800°C higher than the temperature of the inner part when a range having a thickness 5%-30% of a total coil thickness from the outermost periphery of a hot-rolled coil is the outer peripheral part and the remaining range of the inside is the inner part.SELECTED DRAWING: Figure 4 【課題】熱延コイルの巻き直しや屑化を回避するため、コイラーのマンドレルから引き出された熱延コイルの変形を防止することができる、熱延コイルの製造方法を提供する。【解決手段】熱延コイルの最外周からコイル全厚の５％以上３０％以下の範囲を外周部、その内側の残りの範囲を内部としたとき、内部に相当する範囲を４５０℃以上６５０℃以下の温度で、外周部に相当する範囲を内部の温度より５０℃を超えて高く８００℃以下の温度で巻き取ることを特徴とする熱延コイルの製造方法。【選択図】図４