CN1054884C - 生产热轧宽带钢的方法和设备 - Google Patents

生产热轧宽带钢的方法和设备 Download PDF

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CN1054884C
CN1054884C CN95105371A CN95105371A CN1054884C CN 1054884 C CN1054884 C CN 1054884C CN 95105371 A CN95105371 A CN 95105371A CN 95105371 A CN95105371 A CN 95105371A CN 1054884 C CN1054884 C CN 1054884C
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temperature
cooling
thin slab
degree
slab
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CN1123841A (zh
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M·科沙诺维希
W·罗德
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SMS Siemag AG
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SMS Schloemann Siemag AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • 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
    • 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
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—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
    • B21B1/46—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 metal immediately subsequent to continuous casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/009—Pearlite
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Glass Compositions (AREA)
  • Heat Treatment Of Articles (AREA)
  • Fertilizers (AREA)

Abstract

本发明涉及一种生产热轧宽带钢的方法和由一台40～70mm薄板坯连铸机、一台均热炉和一台轧机组成的生产设备，从连铸机出来的薄板坯的出口温度高于950℃。在连铸机和均热炉之间，板坯足够深处的表面温度下降到可产生奥氏体到铁素体/珠光体的组织转变。所用的冷却段1为水冷段并由许多可打开和关闭的水冷架4组成。

Description

生产热轧宽带钢的方法和设备
本发明涉及一种用由一台40～70mm的薄板坯连铸机、一台均热炉和一台轧机组成的生产设备生产热轧宽带钢的方法。薄板坯从连铸机出来的出口温度高于950℃。
本发明还涉及实施该方法用的生产设备。
如所周知，在命名为CSP设备的一种经济生产热轧宽带钢的生产设备的实施例中，连铸机生产的40～70mm薄板坯在辊底炉中均热后便直接在一台多机座的轧机机列中进行轧制。薄板坯从连铸机的出口温度一般介于950℃和1100℃之间。在辊底炉中，整个板坯厚度和板坯长度的均匀温度例如设定为1100℃。
事实上，上述方法的特点是，在轧机机列中第一次变形之前不产生奥氏体-铁素体/珠光体转变。在连铸机中凝固后产生的初生奥氏体一直保持到轧机机列中的第一次变形为止。
上述方法保证了最大限度的节能，特别是在连铸机后面的温度销低于辊底炉后面的要求温度时尤其如此。在这种情况下，辊底炉内的均温所需的能耗可以达到绝对的最低限度。
这种方法最适用于第一选择废钢添加直接还原的铁和转炉处理的原钢。但在用第二选择废钢时，特别是在添加铜时，这种方法则有缺点：在连续通过辊底炉生成氧化皮的过程中，析出的铜聚集在初生奥氏体的晶界上并分离表面区域内晶界的结合。这种现象可能在后面的轧机机列中的轧制变形时导致所谓的熔焊断裂，视铜的含量和氧化皮的多少而异。
为了保证在上述实施例的热轧带钢生产设备中也能用于第二选择废钢而又没有上述缺点，本发明建议在进入辊底炉之前设置一个强冷却段1(见图2)。冷却段1是带有许多可打开和可关闭的水冷架4的水冷段。在冷却段1内，薄板坯3的表面2足够的深度内下降到温度低于A3。这样，在辊底炉中重新加热后就强迫产生带有奥氏体晶界新取向的组织转变。冷却段1的冷却程度是这样选择的(见图1)：为了保证至少到2mm深度内产生足够的组织转变，温度应低于600℃，而板坯表面的平均温度则保持在相应材料质量的马氏体转变温度以上。温度应低于600℃所产生的最低温度由至少70％奥氏体转变成铁素体/珠光体所需的最少时间而定。为了把随后再加热的能耗降低到最低限度，冷却深度和冷却时间都应尽可能保持最小。

Claims (4)

1.由一台40-70mm薄板坯连铸机、一台均热炉和一台轧机组成的生产设备生产热轧宽钢带的方法，其中，从连铸机出来的薄板坯的出口温度高于950℃，其特征是，在连铸机和均热炉之间，通过选择冷却程度使从薄板坯表面至少到2mm深度内的温度下降到低于600℃。
2.如权利要求1所述的方法，其特征是：薄板坯是一种具有质量和马氏体转变温度的材料，并且还包括降低薄板坯的温度从而使薄板坯的平均表面温度不低于材料质量的马氏体转变温度。
3.如权利要求1所述的方法，其特征是：还包括选择冷却时间使至少70％的奥氏体转变成铁素体/珠光体。
4.如权利要求1所述的方法，其特征是：温度在具有独立冷却区段的一冷却段中降低，这些独立冷却区段可以开和关，还包括依赖于浇铸速度和所需的冷却深度最小值、冷却温度、冷却深度、冷却时间和马氏体转变温度降低薄板坯的温度。
CN95105371A 1994-05-13 1995-05-12 生产热轧宽带钢的方法和设备 Expired - Fee Related CN1054884C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4416752.0 1994-05-13
DE4416752A DE4416752A1 (de) 1994-05-13 1994-05-13 Verfahren und Produktionsanlage zur Erzeugung von Warmbreitband

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CN1123841A CN1123841A (zh) 1996-06-05
CN1054884C true CN1054884C (zh) 2000-07-26

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US (1) US5665181A (zh)
EP (1) EP0686702B1 (zh)
JP (1) JP3686700B2 (zh)
KR (1) KR100353080B1 (zh)
CN (1) CN1054884C (zh)
AT (1) ATE199404T1 (zh)
CA (1) CA2149274C (zh)
DE (2) DE4416752A1 (zh)
ES (1) ES2155103T3 (zh)
FI (1) FI109001B (zh)
GR (1) GR3035949T3 (zh)
TW (1) TW365864U (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10602768B2 (en) 2012-01-20 2020-03-31 Altria Client Services Llc Oral tobacco product
US10959454B2 (en) 2012-01-20 2021-03-30 Altria Client Services Llc Oral product
US11369129B2 (en) 2012-01-20 2022-06-28 Altria Client Services Llc Oral product
US11541001B2 (en) 2012-01-20 2023-01-03 Altria Client Services Llc Oral product

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DE19843200C1 (de) * 1998-09-14 1999-08-05 Mannesmann Ag Verfahren zur Erzeugung von Warmband und Blechen
DE19950502C1 (de) 1999-10-20 2000-11-16 Thyssenkrupp Stahl Ag Verfahren zum Herstellen eines Warmbandes
KR100916089B1 (ko) * 2002-11-21 2009-09-08 주식회사 포스코 이폭 후강판의 제조방법
DE102006056683A1 (de) 2006-01-11 2007-07-12 Sms Demag Ag Verfahren und Vorrichtung zum Stranggießen
US20090084517A1 (en) 2007-05-07 2009-04-02 Thomas Brian G Cooling control system for continuous casting of metal
DE102009048567B4 (de) 2008-10-23 2022-07-21 Sms Group Gmbh Verfahren und Anordnung zum Kühlen eines Gießstrangs in einer Stranggießanlage
JP2011073062A (ja) * 2010-10-22 2011-04-14 Jfe Steel Corp 鋼板の製造方法および鋼板の製造設備
CN102059331A (zh) * 2010-11-26 2011-05-18 首钢总公司 一种避免钢板表面裂纹的连铸坯热装热送工艺
CN103331300A (zh) * 2013-06-13 2013-10-02 南京惠德机械有限公司 一种铁皮废料二次轧制机
DE102014214374A1 (de) 2014-07-23 2016-01-28 Sms Group Gmbh Verfahren zur Herstellung eines metallischen Produkts
CN104975146B (zh) * 2015-06-03 2017-10-10 南京钢铁股份有限公司 一种t91钢连铸方坯直接送装工艺
CN112522588B (zh) * 2019-09-19 2022-06-28 宝山钢铁股份有限公司 一种薄带连铸生产高强薄规格花纹钢板/带的方法

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DE4234455A1 (de) * 1992-10-13 1994-04-14 Schloemann Siemag Ag Verfahren und Anlage zum Auswalzen von Warmbreitband aus stranggegossenen Dünnbrammen

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Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
EP0587150A1 (en) * 1992-09-09 1994-03-16 AICHI STEEL WORKS, Ltd. Process for hot working continuous-cast bloom and steel ingot
DE4234455A1 (de) * 1992-10-13 1994-04-14 Schloemann Siemag Ag Verfahren und Anlage zum Auswalzen von Warmbreitband aus stranggegossenen Dünnbrammen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10602768B2 (en) 2012-01-20 2020-03-31 Altria Client Services Llc Oral tobacco product
US10959454B2 (en) 2012-01-20 2021-03-30 Altria Client Services Llc Oral product
US11369129B2 (en) 2012-01-20 2022-06-28 Altria Client Services Llc Oral product
US11541001B2 (en) 2012-01-20 2023-01-03 Altria Client Services Llc Oral product
US11540554B2 (en) 2012-01-20 2023-01-03 Altria Client Services Llc Oral tobacco product
US11864578B2 (en) 2012-01-20 2024-01-09 Altria Client Services Llc Oral product

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TW365864U (en) 1999-08-01
US5665181A (en) 1997-09-09
FI109001B (fi) 2002-05-15
EP0686702B1 (de) 2001-02-28
CA2149274C (en) 2010-09-21
KR950031312A (ko) 1995-12-18
KR100353080B1 (ko) 2002-12-06
JP3686700B2 (ja) 2005-08-24
FI952305A0 (fi) 1995-05-11
ES2155103T3 (es) 2001-05-01
GR3035949T3 (en) 2001-08-31
JPH07308743A (ja) 1995-11-28
EP0686702A1 (de) 1995-12-13
DE59509042D1 (de) 2001-04-05
DE4416752A1 (de) 1995-11-16
FI952305A (fi) 1995-11-14
ATE199404T1 (de) 2001-03-15
CA2149274A1 (en) 1995-11-14
CN1123841A (zh) 1996-06-05

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