JP7452696B2 - 厚鋼板の製造方法および製造設備 - Google Patents
厚鋼板の製造方法および製造設備 Download PDFInfo
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- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
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- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/60—Aqueous agents
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
- C21D11/005—Process control or regulation for heat treatments for cooling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/06—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing of strip material
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- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Description
[1]厚鋼板の水冷を行う厚鋼板の製造方法であって、前記厚鋼板の搬送方向に沿って配置された少なくとも上下1対の冷却水噴射ノズルを複数組有する水冷装置を用いて、前記冷却水噴射ノズルの冷却水の噴射速度を0.4m/s以上30m/s以下として前記厚鋼板の水冷を行う、厚鋼板の製造方法。
[2]前記水冷装置内での前記厚鋼板の表層冷却速度を0.4℃/s以上29℃/s以下とする、[1]に記載の厚鋼板の製造方法。
[3]前記水冷の前に前記厚鋼板のデスケーリングを行う、[1]または[2]のいずれか1つに記載の厚鋼板の製造方法。
[4]前記水冷の前に前記厚鋼板の酸化スケール除去処理及び加熱を行う、[1]~[3]のいずれか1つに記載の厚鋼板の製造方法。
[5]前記水冷の後に前記厚鋼板の上下面のいずれか一方の面または両方の面の温度を測定する、[1]~[4]のいずれか1つに記載の厚鋼板の製造方法。
[6]前記冷却水噴射ノズルから噴射される冷却水量を制御することによって前記表層冷却速度を制御する[2]~[5]のいずれか1つに記載の厚鋼板の製造方法。
[7]前記冷却水噴射ノズルの本数および前記厚鋼板の搬送速度を制御することによって前記厚鋼板の冷却停止温度を制御し、前記冷却停止温度を前記厚鋼板の表層温度にして350℃以上とする、[1]~[6]のいずれか1つに記載の厚鋼板の製造方法。
[8]厚鋼板の水冷を行う厚鋼板の製造設備であって、前記厚鋼板の搬送方向に沿って配置された少なくとも上下1対の冷却水噴射ノズルを複数組有する水冷装置と、前記冷却水噴射ノズルから噴射される冷却水の噴射速度を0.4m/s以上30m/s以下に制御する制御装置と、を備える、厚鋼板の製造設備。
[9]前記制御装置は前記水冷装置内での前記厚鋼板の表層冷却速度を0.4℃/s以上29℃/s以下に制御する、[8]に記載の厚鋼板の製造設備。
[10]前記水冷装置の入側にデスケーリング装置を更に備える、[8]または[9]のいずれか1つに記載の厚鋼板の製造設備。
[11]前記水冷装置の出側に前記厚鋼板の上下面のいずれか一方の面または両方の面の温度を測定する温度計を更に備える、[8]~[10]のいずれか1つに記載の厚鋼板の製造設備。
[12]前記制御装置は前記冷却水噴射ノズルから噴射される冷却水量を更に制御する、[8]~[11]のいずれか1つに記載の厚鋼板の製造設備。
[13]前記制御装置は、前記冷却水噴射ノズルの本数および前記厚鋼板の搬送速度を制御する、[8]~[12]のいずれか1つに記載の厚鋼板の製造設備。
2 加熱炉
3 水冷装置
4 温度計
5 冷却ゾーン
6 テーブルロール
7 冷却水
9 デスケーリング装置
10 制御装置
11 上位コンピュータ
12 水冷条件演算部
13 水冷操業条件出力部
32 冷却水噴射ノズル
32a 上側の冷却水噴射ノズル
32b 下側の冷却水噴射ノズル
33 水切りロール
34 水切りパージノズル
35 水切りパージ
36 大流量冷却水噴射ノズル
36a 上側の大流量冷却水噴射ノズル
36b 下側の大流量冷却水噴射ノズル
S 厚鋼板
Claims (11)
- 厚鋼板の水冷を行う厚鋼板の製造方法であって、
前記厚鋼板の搬送方向に沿って配置された少なくとも上下1対の冷却水噴射ノズルを複数組有する水冷装置を用いて、
前記冷却水噴射ノズルの冷却水の噴射速度を0.4m/s以上30m/s以下として前記厚鋼板の水冷を行い、
前記水冷装置内での前記厚鋼板の表層冷却速度を0.4℃/s以上4.1℃/s以下とする、厚鋼板の製造方法。 - 前記水冷の前に前記厚鋼板のデスケーリングを行う、請求項1に記載の厚鋼板の製造方法。
- 前記水冷の前に前記厚鋼板の酸化スケール除去処理及び加熱を行う、請求項1に記載の厚鋼板の製造方法。
- 前記水冷の後に前記厚鋼板の上下面のいずれか一方の面または両方の面の温度を測定する、請求項1に記載の厚鋼板の製造方法。
- 前記冷却水噴射ノズルから噴射される冷却水量を制御することによって前記表層冷却速度を制御する、請求項1に記載の厚鋼板の製造方法。
- 前記冷却水噴射ノズルの本数および前記厚鋼板の搬送速度を制御することによって前記厚鋼板の冷却停止温度を制御し、前記冷却停止温度を前記厚鋼板の表層温度にして350℃以上とする、請求項1~5のいずれか1項に記載の厚鋼板の製造方法。
- 厚鋼板の水冷を行う厚鋼板の製造設備であって、
前記厚鋼板の搬送方向に沿って配置された少なくとも上下1対の冷却水噴射ノズルを複数組有する水冷装置と、
前記冷却水噴射ノズルから噴射される冷却水の噴射速度を0.4m/s以上30m/s以下に制御する制御装置と、を備え、
前記制御装置は前記水冷装置内での前記厚鋼板の表層冷却速度を0.4℃/s以上4.1℃/s以下に制御する、厚鋼板の製造設備。 - 前記水冷装置の入側にデスケーリング装置を更に備える、請求項7に記載の厚鋼板の製造設備。
- 前記水冷装置の出側に前記厚鋼板の上下面のいずれか一方の面または両方の面の温度を測定する温度計を更に備える、請求項7に記載の厚鋼板の製造設備。
- 前記制御装置は前記冷却水噴射ノズルから噴射される冷却水量を更に制御する、請求項7に記載の厚鋼板の製造設備。
- 前記制御装置は、前記冷却水噴射ノズルの本数および前記厚鋼板の搬送速度を制御する、請求項7~10のいずれか1項に記載の厚鋼板の製造設備。
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WO2010110473A1 (ja) | 2009-03-25 | 2010-09-30 | Jfeスチール株式会社 | 厚鋼板の製造設備及び製造方法 |
WO2010114083A1 (ja) | 2009-03-30 | 2010-10-07 | Jfeスチール株式会社 | 熱延鋼板の冷却装置 |
JP2019505388A (ja) | 2015-12-30 | 2019-02-28 | アルセロールミタル | 金属基材を冷却するための方法及び装置 |
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JPS5871339A (ja) | 1981-10-23 | 1983-04-28 | Mitsubishi Heavy Ind Ltd | 帯状鋼板の冷却方法および装置 |
JPH1017980A (ja) | 1996-06-28 | 1998-01-20 | Sumitomo Metal Ind Ltd | 低降伏比溶接鋼管およびその製造方法 |
JPH10300301A (ja) | 1997-04-28 | 1998-11-13 | Nippon Steel Corp | 鋼材の制御冷却方法 |
JP4438509B2 (ja) | 2003-06-13 | 2010-03-24 | Jfeスチール株式会社 | 厚鋼板の制御冷却装置 |
JP2005154841A (ja) | 2003-11-26 | 2005-06-16 | Jfe Steel Kk | 鋼板長手方向の材質均一性に優れた薄物鋼板の製造方法 |
JP6377550B2 (ja) * | 2015-03-06 | 2018-08-22 | 株式会社神戸製鋼所 | 厚鋼板冷却方法及び厚鋼板冷却装置 |
CN111247256A (zh) * | 2017-10-31 | 2020-06-05 | 杰富意钢铁株式会社 | 厚钢板的制造设备和制造方法 |
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WO2010114083A1 (ja) | 2009-03-30 | 2010-10-07 | Jfeスチール株式会社 | 熱延鋼板の冷却装置 |
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