JP6641279B2 - ストリップの連続焼鈍装置及びその連続焼鈍方法 - Google Patents
ストリップの連続焼鈍装置及びその連続焼鈍方法 Download PDFInfo
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Description
前記第1加熱帯において1次加熱されたストリップを冷却するか恒温維持するように構成される第1冷却または恒温維持帯と、
前記第1冷却または恒温維持帯において冷却するか恒温維持されたストリップを2次加熱及び均熱するように構成される第2加熱及び均熱帯と、
前記第2加熱及び均熱帯において加熱及び均熱されたストリップを冷却するように構成される第2冷却帯と、を含み、
前記第2冷却帯の後方に、ストリップを過時効または恒温維持するように構成される過
時効または恒温維持帯と、
前記過時効または恒温維持帯において過時効または恒温維持されたストリップを冷却する最終冷却帯とをさらに含み、
前記第1冷却または恒温維持帯は、ストリップの進行方向に最後方の冷却装置の後方に設けられ、瞳孔構造であり、左右方向に移動でき、進行するストリップと同一の速度で回転する一対の中空型水冷ロールと、上下方向に移動できる移動式水冷槽と、を含むことを特徴とする。
ストリップを第1加熱帯において1次加熱する段階と、
前記1次加熱されたストリップを第1冷却または恒温維持帯において1次冷却するか恒温維持する段階と、
前記1次冷却または恒温維持されたストリップを第2加熱及び均熱帯において2次加熱及び均熱する段階と、
前記2次加熱及び均熱されたストリップを第2冷却帯において2次冷却する段階と、を
含み、
前記2次冷却段階後に、ストリップを過時効または恒温維持する段階と、
前記過時効または恒温維持されたストリップを冷却する段階と、をさらに含み、
前記第1冷却または恒温維持する段階は、一対の中空型水冷ロールの間にストリップを通過させる段階と、前記一対の中空型水冷ロールの間を通過したストリップを移動式水冷槽に移動させる段階と、を含み、
前記中空型水冷ロールは、ストリップの進行方向に最後方の冷却装置の後方に設けられ、瞳孔構造であり、左右方向に移動でき、進行するストリップと同一の速度で回転し、前記移動式水冷槽は上下方向に移動できることを特徴とする。
2 第1冷却または恒温維持帯
3 第2加熱及び均熱帯
4 第2冷却帯
5 過時効及び恒温維持帯
6 最終冷却帯
7 従来の連続焼鈍装置
21 張力制御ロール
22 ガス及び蒸気排出装置
23 ガス冷却装置
24 ガス及びミスト(mist)冷却装置
25 ガス、ミスト及び水による噴射冷却装置
26 中空型水冷ロール
27 移動式水冷槽
28 循環式固定水冷槽
29 冷却水排出口
Claims (6)
- ストリップを1次加熱するように構成される第1加熱帯と、
前記第1加熱帯において1次加熱されたストリップを冷却するか恒温維持するように構成される第1冷却または恒温維持帯と、
前記第1冷却または恒温維持帯において冷却するか恒温維持されたストリップを2次加熱及び均熱するように構成される第2加熱及び均熱帯と、
前記第2加熱及び均熱帯において加熱及び均熱されたストリップを冷却するように構成される第2冷却帯と、を含み、
前記第2冷却帯の後方に、ストリップを過時効または恒温維持するように構成される過
時効または恒温維持帯と、
前記過時効または恒温維持帯において過時効または恒温維持されたストリップを冷却する最終冷却帯とをさらに含み、
前記第1冷却または恒温維持帯は、ストリップの進行方向に最後方の冷却装置の後方に設けられ、瞳孔構造であり、左右方向に移動でき、進行するストリップと同一の速度で回転する一対の中空型水冷ロールと、上下方向に移動できる移動式水冷槽と、を含むことを特徴とするストリップの連続焼鈍装置。 - 前記第1冷却または恒温維持帯は、内部に陰圧を発生させるガス及び蒸気排出装置を少
なくとも一つ以上含むことを特徴とする請求項1に記載のストリップの連続焼鈍装置。 - ストリップを連続焼鈍する方法において、
ストリップを第1加熱帯において1次加熱する段階と、
前記1次加熱されたストリップを第1冷却または恒温維持帯において1次冷却するか恒温維持する段階と、
前記1次冷却または恒温維持されたストリップを第2加熱及び均熱帯において2次加熱及び均熱する段階と、
前記2次加熱及び均熱されたストリップを第2冷却帯において2次冷却する段階と、を
含み、
前記2次冷却段階後に、ストリップを過時効または恒温維持する段階と、
前記過時効または恒温維持されたストリップを冷却する段階と、をさらに含み、
前記第1冷却または恒温維持する段階は、一対の中空型水冷ロールの間にストリップを通過させる段階と、前記一対の中空型水冷ロールの間を通過したストリップを移動式水冷槽に移動させる段階と、を含み、
前記中空型水冷ロールは、ストリップの進行方向に最後方の冷却装置の後方に設けられ、瞳孔構造であり、左右方向に移動でき、進行するストリップと同一の速度で回転し、前記移動式水冷槽は上下方向に移動できることを特徴とするストリップの連続焼鈍方法。 - 前記第1加熱帯におけるストリップの加熱は、誘導加熱方式、ラジアントチューブ(R
adiant Tube)加熱方式、または直火加熱方式によって行われ、昇温速度は3
〜150℃/sであり、加熱温度は最大1000℃であり、維持時間は10秒以下である
ことを特徴とする請求項3に記載のストリップの連続焼鈍方法。 - 第1冷却または恒温維持帯における冷却または恒温維持は、ガス冷却方式、水素冷却方
式、水とガスを混合噴射するミスト冷却方式、及び水を直接噴射する水冷却方式のうち少
なくとも一つの方式によって行われ、冷却速度は5〜200℃/sであり、冷却温度は最
低80℃であることを特徴とする請求項3に記載のストリップの連続焼鈍方法。 - 前記第1冷却または恒温維持段階は陰圧が形成された状態で行うことを特徴とする請求項3に記載のストリップの連続焼鈍方法。
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