JP2023540982A - 鋼帯の連続鋳造及びこれに続く平圧延のための設備及び方法 - Google Patents
鋼帯の連続鋳造及びこれに続く平圧延のための設備及び方法 Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 89
- 239000010959 steel Substances 0.000 title claims abstract description 89
- 238000005096 rolling process Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000009749 continuous casting Methods 0.000 title claims abstract description 6
- 238000005098 hot rolling Methods 0.000 claims abstract description 44
- 238000005266 casting Methods 0.000 claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 238000009434 installation Methods 0.000 claims description 25
- 229910001566 austenite Inorganic materials 0.000 claims description 16
- 229910000859 α-Fe Inorganic materials 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000005554 pickling Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 1
- 230000006698 induction Effects 0.000 description 6
- 239000007921 spray Substances 0.000 description 3
- 238000005097 cold rolling Methods 0.000 description 2
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Abstract
Description
本発明によれば、この課題は、請求項1の特徴を有する設備と、請求項8の特徴を有する方法とによって解決される。
実施例1
純粋なオーステナイト組織構造を有する鋼帯2を製造するために、図1に示された設備1を用いて、まずは2.0mmの厚さと1100mmの幅とを有する素材鋼帯4が鋳造される。素材鋼帯4は、鋳造装置3から退出するとき、1250℃の温度を有し、その後、誘導加熱装置5を介して、1157℃の入口温度から1246℃へと加熱される。これに続いて、素材鋼帯4は、第1の熱間圧延スタンド6において、2.52m/sの圧延速度で、55%の低下で、オーステナイトで熱間予備圧延され、その際、入口温度は1130℃であり、出口温度は、971℃である。その後で得られた0.9mmの厚さのオーステナイトで予備圧延された鋼帯2は、これに続いて、まずは誘導加熱装置9を介して938℃から1051℃の温度へと加熱され、その後、第2の熱間圧延スタンド10において、3.78m/sの圧延速度で、33%の低下で、オーステナイトで仕上圧延されることによって、第1の圧延モジュール7を介して仕上圧延される。第2の熱間圧延スタンド10への入口温度は、992℃であり、出口温度は、882℃である。そうして得られた、0.6mmの最終帯厚さを有する鋼帯2が、これに続いて冷却され、コイルへと巻き取られる。
純粋なフェライト組織構造を有する鋼帯2を製造するために、図1に示された設備1を用いて、まずは2.0mmの厚さと1100mmの幅とを有する素材帯鋼4が鋳造される。素材鋼帯4は、鋳造装置3から退出するとき、1250℃の温度を有し、十分に高い温度に基づいて、加熱することなく、熱間圧延スタンド6に供給され、2.22m/sの圧延速度で、熱間圧延スタンド6において、55%の低下で、オーステナイトで予備圧延され、その際、入口温度は、1020℃であり、出口温度は、882℃である。その後で得られた0.9mmの厚さのオーステナイトで予備圧延された鋼帯2は、これに続いて、まずは鋼帯2が、冷却装置8を介して794℃から785℃の温度へと冷却され、その後、第2の熱間圧延スタンド10において、3.33m/sの圧延速度で、33%の低下で、熱間仕上圧延されることによって、第1の圧延モジュール7を介してフェライトで仕上圧延される。第2の熱間圧延スタンド10への入口温度は、757℃であり、出口温度は、705℃である。そうして得られた、0.6mmの最終鋼帯厚さを有する鋼帯2が、これに続いて冷却され、コイルへと巻き取られる。
2 鋼帯
3 鋳造装置
4 素材鋼帯
5 第1の加熱装置/誘導加熱装置
6 第1の熱間圧延スタンド
7(第1の)圧延モジュール
8 第1の冷却装置
9 第2の加熱装置/誘導加熱装置
10 第2の熱間圧延スタンド
11 冷却区間/スプレー式冷却装置
12 分離装置
13 第1のコイラ装置
14 第2のコイラ装置
15 第2の圧延モジュール
16 第2の冷却装置
17 第3の加熱装置
18 第3の熱間圧延スタンド
Claims (9)
- オーステナイト及び/又はフェライト組織構造を有し、1.0mmより小さい厚さを有する鋼帯(2)の連続鋳造及びこれに続く平圧延のための設備(1)であって、
1.50mmから4.0mmの範囲の厚さを有する素材鋼帯(4)が連続鋳造可能である、鋳造装置(3)と、
鋳造装置(3)に連結された少なくとも1つの熱間圧延スタンド(6)であって、熱間圧延スタンド(6)によって、素材鋼帯(4)が、依然としてオーステナイト及び/又はフェライト組織範囲で、鋳造プロセスの直後に鋼帯(2)へと熱間予備圧延できる、熱間圧延スタンド(6)と、
を備える、設備(1)において、
鋳造装置(3)に連結された熱間圧延スタンド(6)の直ぐ下流側に配置された少なくとも1つの圧延モジュール(7)が設けられていて、圧延モジュール(7)は、冷却装置(8)と加熱装置(9)と熱間圧延スタンド(10)とをこの順で有し、熱間圧延スタンド(10)によって、予備圧延された鋼帯(2)は、オーステナイト及び/又はフェライト組織範囲で、鋼帯(2)へと熱間仕上圧延できることを特徴とする、設備(1)。 - 設備(1)は、それぞれ相前後して配置された少なくとも2つ、好適には少なくとも3つの圧延モジュール(7、15)を備え、圧延モジュール(7、15)の各々は、冷却装置(8、16)と加熱装置(9、17)と熱間圧延スタンド(10、18)とをこの順序で有する、請求項1に記載の設備(1)。
- 少なくとも1つの圧延モジュール(7)の下流側に、好ましくは最後の圧延モジュール(15)の下流側に、少なくとも1つの冷却区間(11)が設けられている、請求項1又は2に記載の設備(1)。
- 鋳造装置(3)に連結された熱間圧延スタンド(6)の上流側に配置された少なくとも1つの加熱装置(5)をさらに備える、請求項1から3のいずれか一項に記載の設備(1)。
- 少なくとも1つの圧延モジュール(7)の下流側に、好ましくは最後の圧延モジュール(15)の下流側に配置された、金属の鋼帯(2)を酸洗する酸洗装置及び/又は金属の鋼帯(2)を焼鈍する熱処理装置をさらに備える、請求項1から4のいずれか一項に記載の設備(1)。
- 鋼帯(2)を巻き付けてコイルを作製する少なくとも1つ、好ましくは少なくとも2つのコイラ装置(13、14)をさらに備える、請求項1から5のいずれか一項に記載の設備(1)。
- 少なくとも1つのコイラ装置(13、14)の上流側に配置された、鋼帯(2)を分離する分離装置(12)をさらに備える、請求項6に記載の設備(1)。
- オーステナイト及び/又はフェライト組織構造を有し、1.0mmよりも小さい厚さを有する鋼帯(2)を製造する方法であって、
まずは鋳造装置(3)において、1.50mmから4.0mmまでの範囲の厚さを有する鋼帯(4)を連続鋳造し、次に、直接に鋳造装置(3)に連結された少なくとも1つの熱間圧延スタンド(6)を用いて、オーステナイト及び/又はフェライト組織範囲で、好ましくは少なくとも700℃のより高い温度で、鋼帯(2)へと熱間予備圧延する、方法において、
熱間予備圧延された鋼帯(2)を、冷却装置(8)と加熱装置(9)と熱間圧延スタンド(10)とをこの順序で有するとともに、鋳造装置(3)に連結された熱間圧延スタンド(6)の直ぐ下流側に配置された少なくとも1つの圧延モジュール(7)を介して、オーステナイト及び/又はフェライトで、鋼帯(2)へと熱間仕上圧延することを特徴とする、方法。 - オーステナイト及び/又はフェライト組織構造を有し、1.0mmより小さい厚さを有する鋼帯(2)を製造するための、請求項1から7のいずれか一項に記載の設備(1)の使用。
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